TUCSON ELECTRIC POWER CO
S-4/A, 1998-12-18
ELECTRIC SERVICES
Previous: FPA NEW INCOME INC, 24F-2NT, 1998-12-18
Next: TULTEX CORP, 4, 1998-12-18





   
    As filed with the Securities and Exchange Commission on December 18, 1998
    
                                                  Registration No. 333-65143
          =================================================================


                          SECURITIES AND EXCHANGE COMMISSION
                               Washington, D.C.  20549

                                   ----------------

                                       FORM S-4
   
                                   AMENDMENT NO. 2
    

                                          to

               REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                                   ----------------

                            TUCSON ELECTRIC POWER COMPANY
                (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)


                     ARIZONA                             86-0062700
           (State or other jurisdiction of           (I.R.S. Employer 
           incorporation or organization)           Identification No.)

                                220 WEST SIXTH STREET
                               TUCSON, ARIZONA,  85701
                                    (520) 571-4000
            (Address, including zip code, and telephone number, including
              area code, of registrant's principal executive offices)

               Dennis R. Nelson, Esq.          J. Anthony Terrell, Esq.
           Tucson Electric Power Company          John T. Hood, Esq.
               220 West Sixth Street           Thelen Reid & Priest LLP
              Tucson, Arizona,  85701             40 West 57th Street
                   (520) 571-4000              New York, New York 10019
                                                    (212) 603-2000
          (Names and addresses, including zip codes, and telephone numbers,
                     including area codes, of agents for service)

                                ---------------------

               Approximate date of commencement of proposed sale of the
                              securities to the public:
           AS SOON AS PRACTICABLE AFTER THIS REGISTRATION STATEMENT BECOMES
                                      EFFECTIVE.

                                ---------------------



          =================================================================


      <PAGE>


               The information in this Prospectus is not complete and may
          be changed.  We may not sell these securities until the
          registration statement filed with the Securities and Exchange
          Commission is effective.  This Prospectus is not an offer to
          exchange these securities and it is not soliciting an offer to
          exchange these securities in any jurisdiction in which the offer
          or exchange is not permitted.



          PROSPECTUS
   
                   Subject to completion, dated December   , 1998
    

                            TUCSON ELECTRIC POWER COMPANY

                                    EXCHANGE OFFER
   
                             TEP IS OFFERING TO ISSUE ITS

                 FIRST COLLATERAL TRUST BONDS, 7 1/2% SERIES B DUE 2008

                                 IN EXCHANGE FOR ITS

                 FIRST COLLATERAL TRUST BONDS  7 1/2% SERIES A DUE 2008
    

                     THIS EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M.
                 NEW YORK CITY TIME, __________, 1998 UNLESS EXTENDED

   
          .    TEP will accept all bonds that bondholders properly tender
               and do not withdraw before the expiration of the exchange
               offer.
    

          .    You will not recognize any income, gain or loss for U.S.
               federal income tax purposes as a result of the exchange.

   
          .    The terms of the new bonds will be the same as those of the
               old bonds, except for the restrictions on transfer of the
               old bonds.
    

   
          .    Like the old bonds, the new bonds will initially be secured. 
               However, if certain conditions are satisfied, the collateral
               securing the new bonds may be released.  After the release
               of the collateral, the new bonds will be unsecured.
    

   
          .    The exchange offer is not subject to any conditions, except
               that TEP will not be required to consummate the exchange if
               that would be unlawful.
    

   
          .    There will likely be no public market for the new bonds.
    

                                  -----------------

   
          THE NEW BONDS, LIKE THE OLD BONDS, INVOLVE A SIGNIFICANT DEGREE
          OF INVESTMENT RISK. SEE "RISK FACTORS" ON PAGE 7 FOR A DISCUSSION
          OF CERTAIN RISKS THAT YOU SHOULD CONSIDER (IN ADDITION TO OTHER
          MATTERS DISCUSSED HEREIN) IN EVALUATING THE INVESTMENT QUALITY OF
          THE NEW BONDS.
    

                                  -----------------

          NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE
          SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE
          SECURITIES OR PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
          PROSPECTUS.  ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
          OFFENSE.

                                   __________, 1998


     <PAGE>

   
          THIS PROSPECTUS INCORPORATES BY REFERENCE IMPORTANT BUSINESS AND
          FINANCIAL INFORMATION ABOUT TEP THAT IS NOT INCLUDED IN OR
          DELIVERED WITH THIS PROSPECTUS.  SEE "ADDITIONAL INFORMATION". 
          YOU MAY OBTAIN COPIES OF DOCUMENTS CONTAINING SUCH INFORMATION
          FROM US, WITHOUT CHARGE, BY EITHER CALLING OR WRITING TO US AT:
    

                              TUCSON ELECTRIC POWER COMPANY
                              220 WEST SIXTH STREET
                              TUCSON, ARIZONA  85701
                              ATTENTION:  TREASURER
                              TELEPHONE:  520-884-3660

   
          IN ORDER TO OBTAIN TIMELY DELIVERY, YOU MUST REQUEST DOCUMENTS
          FROM US NO LATER THAN __________ __, 1998, WHICH IS FIVE DAYS
          BEFORE THE EXPIRATION DATE OF THE EXCHANGE OFFER ON _____, 1998.
    


                                  TABLE OF CONTENTS

                                   PAGE                               PAGE
                                   ----                               ----
   
           Summary . . . . . . . .    3     Additional Information  .   65

           Risk Factors  . . . . .    7     Legal Matters . . . . . .   66

           TEP . . . . . . . . . .    9     Experts . . . . . . . . .   66

           Use of Proceeds . . . . .  9     Appendix A -  Annual Report on
                                                          Form 10-K for
                                                          the year ended
                                                          on December 31,
                                                          1997, as amended
                                                          by Form 10-K/A,
                                                          dated March 5,
                                                          1998

           The Exchange Offer  . . .  9     Appendix B -  Quarterly Report
                                                          on Form 10-Q for
                                                          the quarter
                                                          ended March 31,
                                                          1998

           Description of the               Appendix C -  Quarterly Report
                New Bonds  . . . . . 17                   on Form 10-Q for
                                                          the quarter
                                                          ended June 30,
                                                          1998

           Description of the               Appendix D -  Quarterly Report
                Indenture  . . . . . 22                   on Form 10-Q for
                                                          the quarter
                                                          ended September
                                                          30, 1998

           Description of the 
                1941 Mortgage  . . . 35

           Description of the 
                1992 Mortgage  . . . 47

           Certain U.S. Federal 
                Income Tax
                Considerations . . . 61

           Plan of Distribution  . . 64
    


   
               YOU SHOULD RELY ONLY ON THE INFORMATION CONTAINED OR
          INCORPORATED BY REFERENCE IN THIS PROSPECTUS OR IN THE LETTER OF
          TRANSMITTAL IN CONNECTION WITH THE EXCHANGE OFFER.
    

   
               WE HAVE NOT AUTHORIZED ANYONE TO GIVE YOU ANY INFORMATION
          OTHER THAN THIS PROSPECTUS.  YOU SHOULD NOT ASSUME THAT THE
          INFORMATION CONTAINED OR INCORPORATED IN THIS PROSPECTUS IS
          ACCURATE AS OF ANY DATE AFTER ___________, 1998, WHICH IS THE
          DATE OF THIS PROSPECTUS.  THIS PROSPECTUS IS NOT AN OFFER TO
          EXCHANGE THE NEW BONDS AND IT IS NOT SOLICITING AN OFFER TO
          EXCHANGE THE NEW BONDS IN ANY JURISDICTION IN WHICH THE EXCHANGE
          OFFER IS NOT PERMITTED.
    


                                      2
     <PAGE>
                                       SUMMARY

   
               TEP is presenting this summary solely to furnish limited
          introductory information regarding the exchange offer and the new
          bonds.  This summary does not contain all the information you
          should consider.  You should read the entire Prospectus,
          including the Appendices, before making any investment decision.
    

   
                            TUCSON ELECTRIC POWER COMPANY
    

   
               Tucson Electric Power Company is an operating public
          utility engaged in delivering energy services to retail customers
          primarily in the Tucson, Arizona metropolitan area and to
          wholesale customers throughout the Western United States.
    

                                  THE EXCHANGE OFFER

   
          GENERAL             TEP is offering to exchange $1,000 in principal
                          amount of new bonds for each $1,000 in principal
                          amount of old bonds that bondholders properly
                          tender and do not withdraw before the Expiration
                          Date.  TEP will issue the new bonds on or
                          promptly after the expiration date. There are
                          $140,000,000 aggregate principal amount of old
                          bonds outstanding. See "The Exchange Offer."
    

   
          RESALE OF 
            NEW BOND          Based on interpretive letters written by the
                          staff of the SEC to companies other than TEP, TEP
                          believes that, subject to certain exceptions, new
                          bonds issued in the exchange offer in exchange
                          for old bonds may be offered for resale, resold
                          and otherwise transferred by any holder thereof
                          (other than any such holder which is an
                          "affiliate" of TEP within the meaning of Rule 405
                          under the Securities Act) without compliance with
                          the registration and prospectus delivery
                          provisions of the Securities Act.
    

   
                              If TEP's belief is inaccurate, holders of new
                          bonds who offer, resell or otherwise transfer new
                          bonds in violation of the Securities Act may
                          incur liability under that Act. TEP will not
                          assume or indemnify holders against this
                          liability.
    

   
          EXPIRATION
            DATE              The exchange offer will expire at 5:00 p.m.,
                          New York City time, on __________, 1998 unless
                          extended.  If extended, the term "expiration
                          date" will mean the latest date and time to which
                          the exchange offer is extended.  TEP will accept
                          for exchange any and all old bonds which are
                          properly tendered in the exchange offer and not
                          withdrawn before 5:00 p.m., New York City time,
                          on the Expiration Date.
    

   
          CONDITIONS TO 
            THE EXCHANGE 
            OFFER             TEP may terminate the exchange offer before
                          the expiration date if it determines that its
                          ability to proceed with the exchange offer could
                          be materially impaired due to 
    

   
                          .   any legal or governmental action,
                          .   any new law, statute, rule or regulation, or
                          .   any interpretation by the staff of the SEC
                              of any existing law, statute, rule or
                              regulation.
    

   
          TENDER
            PROCEDURES - 
            BENEFICIAL 
            OWNERS            If your old bonds are registered in the name
                          of a broker, dealer, commercial bank, trust
                          company or other nominee and you wish to tender
    


                                      3
     <PAGE>

   
                          such old bonds in the exchange offer, you should
                          contact the registered holder promptly and
                          instruct the registered holder to tender on your
                          behalf.
    

   
                              IF YOU ARE A BENEFICIAL HOLDER, YOU SHOULD
                          FOLLOW THE INSTRUCTIONS RECEIVED FROM YOUR BROKER
                          OR NOMINEE WITH RESPECT TO TENDERING PROCEDURES
                          AND SHOULD CONTACT YOUR BROKER OR NOMINEE
                          DIRECTLY.
    

   
          TENDER 
            PROCEDURES - 
            REGISTERED 
            HOLDERS AND
            DTC 
            PARTICIPANTS      If you are a registered holder of old bonds
                          or a participant in the Depositary Trust Company
                          ("DTC") and you wish to participate in the
                          exchange offer, you must complete, sign and date
                          the Letter of Transmittal delivered with this
                          prospectus, or a facsimile thereof; (or, if you
                          are a DTC participant, you must instruct DTC to
                          transmit to the exchange agent a message
                          indicating that you agree to be bound by the
                          terms of the Letter of Transmittal.  You should
                          mail or otherwise transmit the Letter of
                          Transmittal or facsimile (or DTC message),
                          together with your old bonds and any other
                          required documentation to the Bank of Montreal
                          Trust Company, as exchange agent.
    

   
          GUARANTEED 
            DELIVERY 
            PROCEDURES        If you are a registered holder of old bonds
                          and you wish to tender your old bonds, but your
                          old bonds are not immediately available or you
                          cannot deliver your old bonds or the Letter of
                          Transmittal to the exchange agent prior to the
                          expiration date, you must tender your old bonds
                          according to special guaranteed delivery
                          procedures.
    

   
          WITHDRAWAL 
            RIGHTS            You may withdraw tenders of old bonds at any
                          time before 5:00 p.m., New York City time, on the
                          expiration date.
    

   
          CERTAIN 
            FEDERAL 
            INCOME TAX
            CONSIDERA-
            TIONS             The exchange of new bonds for old bonds will
                          not be a taxable event for U.S. federal income
                          tax purposes.  As a result, you will not
                          recognize any income, gain or loss with respect
                          to the exchange.
    

   
          EXCHANGE 
            AGENT             Bank of Montreal Trust Company is the
                          exchange agent. Its telephone number is (212)
                          701-7624.  Its address is 88 Pine Street, Wall
                          Street Plaza, 19th Floor, New York, New York 
                          10005.
    


                                    THE NEW BONDS


          OFFERED 
            SECURITIES        $140,000,000 principal amount of First
                          Collateral Trust Bonds, 7 1/2% Series B due 2008

          MATURITY 
            DATE              August 1, 2008

   
          INTEREST 
            PAYMENT 
            DATES             February 1 and August 1 of each year,
                          beginning  _______
    

   
          OPTIONAL 
            REDEMPTION        TEP will have the option to redeem the new
                          bonds, in whole at any time or in part from time
                          to time, as described under Description of the
                          New Bonds - "Redemption" on page 18.
    

   
          SECURITY; 
            RANKING;
            RELEASE OF 
            COLLATERAL        The new bonds will not be secured by a
                          direct mortgage or other lien on property of the
                          TEP.  However, the new bonds will initially enjoy
                          the benefit of an equal aggregate principal
                          amount of TEP's first mortgage bonds ("Class A
                          Bonds") delivered to and held by the Trustee.
    


                                      4
     <PAGE>

   
                              At the date of this prospectus, the Class A
                          Bonds are bonds issued under, TEP's Indenture,
                          dated as of April 1, 1941, as amended and
                          supplemented (the "1941 Mortgage"), to The Chase
                          Manhattan Bank, which indenture, currently, is
                          TEP's first mortgage bond indenture.  When the
                          1941 Mortgage is to be satisfied and discharged,
                          the Trustee will surrender the Class A Bonds
                          issued under the 1941 Mortgage.
    

   
                              If TEP's Indenture of Mortgage and Deed of
                          Trust, dated as of December 1, 1992, as amended
                          and supplemented (the "1992 Mortgage"), remains
                          in effect at that time, TEP will deliver to the
                          Trustee, in exchange for the Class A Bonds
                          surrendered by it, an equal aggregate principal
                          amount of Class A Bonds issued under the 1992
                          Mortgage.  The 1992 Mortgage is, currently, TEP's
                          second mortgage bond indenture but, upon the
                          satisfaction and discharge of the 1941 Mortgage,
                          will become TEP's first mortgage bond indenture. 
                          When both the 1941 Mortgage and the 1992 Mortgage
                          have been or are to be satisfied and discharged
                          and if at that time TEP has no Secured Debt
                          except Permitted Secured Debt (as these terms are
                          defined in DESCRIPTION OF THE INDENTURE -  
                          "Limitation on Secured Debt" on page 24), the
                          Trustee will surrender the Class A Bonds then
                          held by it.  The date of this surrender is called
                          the "Collateral Release Date".
    

   
                              After the Collateral Release Date, the new
                          bonds will be unsecured obligations and will rank
                          equally with all other unsecured and
                          unsubordinated indebtedness of TEP.
    

   
                              See DESCRIPTION OF THE INDENTURE -  
                          "Security", DESCRIPTION OF THE 1941 MORTGAGE -  
                          "Security" on page 35, and DESCRIPTION OF THE
                          1992 MORTGAGE - "Security" on page 47.
    

   
          LIMITATION 
            ON SECURED 
            DEBT              After the Collateral Release Date, the
                          Indenture will impose limitations on the issuance
                          or assumption by TEP of Secured Debt except
                          Permitted Secured Debt. See DESCRIPTION OF THE
                          INDENTURE - "Limitation on Secured Debt" on page
                          24.
    


                                      5
     <PAGE>
                         SELECTED CONSOLIDATED FINANCIAL DATA

   
               We obtained the selected historical financial data of TEP 
          for the fiscal years 1993-1997 from the audited consolidated 
          financial statements of TEP.  Consolidated financial statements 
          of TEP for 1995, 1996 and 1997 are included elsewhere in
          this prospectus.  The selected financial data as of and for the
          nine months ended September 30, 1998 have been derived from the
          unaudited consolidated financial statements of TEP included
          elsewhere in this prospectus.  You should read the information
          provided below along with the consolidated financial statements
          of TEP and the notes to those financial statements.
    



                                               1993        1994        1995  
                                               ----        ----        ----  
           ------------------------------------------------------------------
                                               (In thousands - except ratios)
           SUMMARY OF OPERATIONS
           ------------------------------------------------------------------
           Operating Revenues                $624,139    $691,473    $670,569

           Recognition of Prior Period
           NOLs-Part of Income Taxes              --           --      23,282

           Income (Loss) from                (21,816)      20,740      54,905
           Continuing Operations
           -----------------------------------------------------------------
           FINANCIAL POSITION
           ------------------------------------------------------------------
           Total Utility Plant - Net       $2,029,764  $2,007,422  $1,978,126

           Investments and Other               62,850      12,992      52,116
           Property

           Total Assets                     2,742,932   2,730,229   2,563,461



           Long-Term Debt                   1,416,352   1,381,935   1,207,460

           Capital Lease Obligations          927,201     922,735     897,958

           Common Stock Equity               (62,973)    (42,233)      12,488
           (Deficit)

           Total Capitalization             2,280,580   2,262,437   2,117,906
           ------------------------------------------------------------------
           SELECTED CASH FLOW DATA
           ------------------------------------------------------------------
           Net Cash Flows From                $89,331    $143,616    $119,390
           Operations (A)

           Construction Expenditures (B)       48,162      62,599      59,097
           
           Free Cash Flow (A-B)                41,169      81,017      60,293
           ------------------------------------------------------------------
           RATIO OF EARNINGS TO FIXED
           CHARGES                               0.81        1.10        1.21
           ==================================================================


   
                                                                   9 Months
                                                                     Ended
                                                                 September 30,
                                               1996       1997       1998
                                               ----       ----       ----
           ------------------------------------------------------------------
                                               (In thousands - except ratios)
           SUMMARY OF OPERATIONS
           ------------------------------------------------------------------
           Operating Revenues               $715,873    $729,893    $593,969

           Recognition of Prior Period        88,638      43,443          --
           NOLs-Part of Income Taxes       

           Income (Loss) from                120,852      83,572      35,840
           Continuing Operations
           ------------------------------------------------------------------
           FINANCIAL POSITION
           ------------------------------------------------------------------
           Total Utility Plant - Net      $1,953,904  $1,935,513  $1,915,494

           Investments and Other              69,289      78,772      62,195
           Property

           Total Assets                    2,568,541   2,634,409   2,673,033



           Long-Term Debt                  1,223,025   1,215,120   1,214,423

           Capital Lease Obligations         895,867     890,257     887,116

           Common Stock Equity               133,288     216,878     253,385
           (Deficit)

           Total Capitalization            2,252,180   2,322,255   2,354,924
           ------------------------------------------------------------------
           SELECTED CASH FLOW DATA
           ------------------------------------------------------------------
           Net Cash Flows From              $151,267    $124,390    $110,241
           Operations (A)

           Construction Expenditures (B)      66,519      71,420      54,788
           
           Free Cash Flow (A-B)               84,748      52,970      55,453
           ------------------------------------------------------------------
           RATIO OF EARNINGS TO FIXED
           CHARGES                              1.25        1.39        1.30*
           ==================================================================
    


          ----------------

   
          *  12 Months ended September 30, 1998.
    


                                      6
     <PAGE>

                                     RISK FACTORS
   
               TEP is presenting the following discussion solely to
          furnish limited introductory information regarding selected risks
          and uncertainties facing TEP.  This discussion does not contain
          all the information you should consider.  You should read the
          entire Prospectus, including the Appendices, before making any
          investment decision.
    

   
               TEP's financial prospects are subject to regulatory,
          economic, and other uncertainties.  Regulatory uncertainties
          include the impact of the introduction of retail competition in
          Arizona and the resolution of the stranded cost recovery plan
          filed by TEP with the Arizona Corporation Commission (ACC) in the
          third quarter of 1998.  Other uncertainties include the extent to
          which TEP can alter operations and reduce costs in response to
          industry changes or unanticipated economic downturns, which may
          be limited by high financial and operating leverage.
    

   
          TEP CANNOT PREDICT IMPACT OF RETAIL COMPETITION ON OPERATING
          RESULTS AND FINANCIAL CONDITION
    

   
               Until the regulatory uncertainties described above are resolved,
          we are unable to predict the level of TEP's energy sales, as well
          as future revenues and assets.
    

             
               On December 10, 1998, the ACC approved an order to put into
          effect the Retail Electric Competition Rules on January 1, 1999.
          These rules, as summarized in TEP's Quarterly Report on Form 10-Q
          for the period ended September 30, 1998, were initially adopted
          on an emergency basis on August 5, 1998.  Final approval of the
          rules was required within six months or the emergency rules would
          have become invalid.  These rules provide a phase-in schedule
          in which all retail customers will be able to choose their 
          generation provider by January 1, 2001.  These rules apply to 
          TEP and all other electric utilities in Arizona that are regulated
          by the ACC.  The rules require, among other things, that TEP
          transfer its electric generation assets to either an unaffiliated 
          third party or a separate corporate entity by January 1, 2001.
    

               Although the rules are effective January 1, 1999, the ACC must
          take further action on several matters before retail electric
          competition will be fully implemented in Arizona.  These matters 
          include, among others:
    

               .  determination of the qualification and recovery of stranded
                  costs,
               .  approval of unbundled tariffs, which provide separate
                  rates for generation, transmission, distribution, metering, 
                  meter reading, billing and collection, and ancillary
                  services,
               .  establishment of an independent system administrator,
                  which is intended to facilitate mondiscriminatory retail
                  direct access of the transmission system in Arizona, and
               .  certification of competitive power suppliers--companies
                  that will market, supply or broker competitive energy
                  services in Arizona.
    

               We cannot predict the outcome of these matters.
      

   
               One of the major issues arising from electric utility
          deregulation is the method of quantifying and recovering stranded
          costs.  Stranded costs are the difference between the value of
          generation assets (generating plants, purchased power contracts,
          and related regulatory assets) under traditional regulation and
          the market value of the assets in a competitive environment.  As
          described in TEP's Quarterly Report on Form 10-Q for the quarter
          ended September 30, 1998, the ACC issued an order requiring TEP
          and the other utilities it regulates to file a stranded cost
          recovery plan.  TEP filed a proposed plan of divestiture and
          stranded cost recovery with the ACC in August 1998.  In this
          plan, TEP proposes to divest all of its generating assets and
          estimates that its stranded costs may range from $600 million to
          $1.1 billion.  TEP subsequently reached a settlement agreement,
          the Stranded Cost Recovery Agreement (SCR Agreement), with the ACC 
          Staff for approval of its plan to divest generation assets and
          for 100% recovery of its stranded costs.
    

                                     7
<PAGE>


   
               The ACC set a hearing for December 3, 1998 to begin to 
          review the SCR Agreement.  However, on December 1, 1998, a justice
          of the Arizona Supreme Court granted a motion by the Arizona 
          Attorney General to delay the hearings.  The Court set a date of 
          January 14, 1999 for the full Supreme Court to hear further
          issues; however, on December 11, 1998, TEP filed a motion with 
          the Supreme Court indicating that the issue is moot because
          the SCR Agreement expired by its terms.
    

   
               We cannot predict whether the ACC will approve a plan of 
          divestiture and stranded cost recovery like the one proposed 
          in the SCR Agreement.  The June 22, 1998 ACC order, which 
          includes the policy of permitting recovery of 100% of stranded 
          costs upon divestiture of generating assets through auction, 
          remains in effect.  TEP intends to continue to seek 100%
          recovery of stranded costs.
    

   
               See ITEM 2. - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS - "Competition,
          Retail" and "Accounting for the Effects of Regulation" in the
          Third Quarter 10-Q for additional information regarding TEP's
          proposed plan of divestiture and stranded cost recovery and the
          settlement agreement with the ACC staff.
    

   
               Many of TEP's generating assets are subject to the liens of
          the 1941 Mortgage and the 1992 Mortgage.  If TEP is successful 
          in divesting its generating assets as proposed in its plan, it 
          would have to release any divested assets from those liens as 
          described in DESCRIPTION OF THE 1941 MORTGAGE - "Release of 
          Property" on page 38 and DESCRIPTION OF THE 1992 MORTGAGE - 
          "Release of Property" on page 51.
    

   
          HIGH DEBT LEVERAGE COULD LIMIT ACCESS TO CAPITAL MARKETS;
          INTEREST RATE RISK.
    

   
               TEP's capital structure is highly leveraged.  Although TEP
          was able to refinance and extend the maturities of certain debt
          obligations at favorable rates and terms in 1997 and 1998, you
          should not assume that TEP will continue to have such favorable
          access to the capital markets.  Despite the reduction in the
          total amount of variable rate debt obligations in 1997 and 1998,
          changes in interest rate levels on its remaining variable rate
          debt will still affect TEP's earnings and cash flow.  As of
          September 30, 1998, TEP had $329 million aggregate principal
          amount of variable rate debt obligations outstanding.  See ITEM
          8. -- CONSOLIDATED FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA in
          the 1997 10-K, and ITEM 2. -- MANAGEMENT'S DISCUSSION AND ANALYSIS
          OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS -- "Overview" in
          the Third Quarter 10-Q attached as Appendix D.
    

   
          ASSET DIVESTITURE OR CERTAIN EVENTS COULD REQUIRE REDEMPTION OF
          TAX EXEMPT LOCAL FURNISHING BONDS
    

   
               A substantial portion of TEP's utility plant assets have 
          been financed with the proceeds from the issuance of tax-exempt
          bonds (approximately $580 million at the date of this prospectus).  
          The interest on these bonds is excluded from gross income for 
          federal income tax purposes.  The following could make it necessary
          to redeem or defease these bonds:
    

   
                    .   asset divestiture;
                    .   tax law changes;
                    .   industry or system operation changes.
    

   
          See ITEM 7. -- MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL 
          CONDITION AND RESULTS OF OPERATIONS -- "Liquidity and Capital 
          Resources, Tax Exempt Local Furnishing Bonds," in the 1997 10-K 
          attached as Appendix A.
    


                                      8
<PAGE>

          OTHER RISKS

   
               See "Certain Risks" in ITEM 1. -- BUSINESS of the 1997 10-K,
          for a discussion of certain other risk factors that should be
          considered in evaluating the investment quality of the new bonds.
    

   
                                        TEP
    

   
               Tucson Electric Power Company, an Arizona corporation, is
          an operating public utility engaged in delivering energy services
          to retail customers primarily in the Tucson, Arizona metropolitan
          area and to wholesale customers throughout the Western United
          States.  As a public utility, TEP falls under the jurisdiction of
          the ACC which has the authority to approve rates and certain
          corporate actions.  TEP is a wholly-owned subsidiary of UniSource
          Energy Corporation, whose stock is traded on the New York Stock
          Exchange and the Pacific Exchange under the ticker symbol UNS.
    

   
               TEP provides electric power to approximately 317,000 retail
          customers.  In 1997, TEP generated and sold more than 7,400
          gigawatt hours of energy to retail customers and 3,400 gigawatt
          hours to other customers at wholesale.  Operating revenues from
          such sales exceeded $729 million.  TEP owns or leases
          approximately 1,896 MW of generating capacity located in Arizona
          and New Mexico.  TEP also has transmission and distribution
          assets to transmit electricity from TEP's remote generating
          facilities to the Tucson area for use by its retail customers
          and to provide interconnections to neighboring utilities.
    


                                   USE OF PROCEEDS

   
               The net proceeds of TEP's First Collateral Trust Bonds, 7 1/2%
          Series A Due 2008 (the "Old Bonds") were used to redeem $105
          million in aggregate principal amount of the 1941 Mortgage Bonds
          maturing in 1999, 2001, 2002 and 2003, which have interest rates
          ranging from 7.55% to 8.5% per annum, as well as $31.9 million in
          aggregate principal amount of the 1941 Mortgage Bonds, 12.22%
          Series due 2000.
    


                                  THE EXCHANGE OFFER

          PURPOSE AND EFFECT OF THE EXCHANGE OFFER

   
               TEP is offering to issue its First Collateral Trust Bonds,
          7 1/2% Series B Due 2008 (the "New Bonds") in exchange for Old Bonds
          as described herein (the "Exchange Offer").
    

   
               The Old Bonds were sold by Morgan Stanley & Co.
          Incorporated, TD Securities (USA) Inc., Prudential Securities
          Incorporated, Salomon Brothers Inc and BNY Capital Markets, Inc.
          (the "Initial Purchasers") on August 1, 1998 to a limited number
          of institutional investors (the "Purchasers"). In connection with
          the sale of the Old Bonds, TEP and the Initial Purchasers entered
          into a Registration Rights Agreement, dated August 1, 1998 (the
          "Registration Rights Agreement"), which requires, among other
          things, TEP 
    

   
                    (a)  to register the Old Bonds under the Securities
               Act or 
    

   
                    (b)  to file with the SEC a registration statement
               under the Securities Act with respect to New Bonds
               identical in all material respects to the Old Bonds and use
               its reasonable effort to cause such registration statement
               to be declared effective under the Securities Act.
    


                                      9
<PAGE>

   
          TEP is further obligated, upon the effectiveness of that
          registration statement, to offer the holders of the Old Bonds the
          opportunity to exchange their Old Bonds for a like principal
          amount of New Bonds which will be issued without a restrictive
          legend and may be reoffered and resold by the holder without
          restrictions or limitations under the Securities Act. A copy of
          the Registration Rights Agreement has been filed as an exhibit to
          the Registration Statement of which this prospectus is a part.
          The Exchange Offer is being made pursuant to the Registration
          Rights Agreement to satisfy TEP's obligations under that agreement.
          The term "Holder" with respect to the Exchange Offer means any 
          person in whose name Old Bonds are registered on TEP's books or 
          any other person who has obtained a properly completed assignment
          from the registered holder.  At the date of this prospectus, the
          sole Holder of Old Bonds is DTC.
    

   
               In participating in the Exchange Offer, a Holder is deemed   
           to represent to TEP, among other things, that
    

   
                    (a)  the New Bonds acquired pursuant to the Exchange
               Offer are being obtained in the ordinary course of business
               of the person receiving such New Bonds, whether or not such
               person is the Holder, 
    

   
                    (b)  the Holder nor any such other person is engaging
               in or intends to engage in a distribution of such New
               Bonds,
    

   
                    (c)  neither the Holder nor any such other person has
               an arrangement or understanding with any person to
               participate in the distribution of such New Bonds, and
    

   
                    (d)  neither the Holder nor any such other person is
               an "affiliate," as defined in Rule 405 under the Securities
               Act, of TEP.
    

   
               Based on a previous interpretation by the staff of the
          Commission set forth in no-action letters issued to third-
          parties, including "Exxon Capital Holdings Corporation"
          (available May 13, 1988), "Morgan Stanley & Co. Incorporated"
          (available June 5, 1991), "Mary Kay Cosmetics, Inc." (available
          June 5, 1991), "Warnaco, Inc." (available October 11, 1991) and
          "K-III Communications Corp." (available May 14, 1993), TEP
          believes that the New Bonds issued pursuant to the Exchange Offer
          may be offered for resale, resold and otherwise transferred by
          any Holder of such New Bonds (other than any such Holder which is
          an "affiliate" of TEP within the meaning of Rule 405 under the
          Securities Act) without compliance with the registration and
          prospectus delivery provisions of the Securities Act, provided
          that such New Bonds are acquired in the ordinary course of such
          Holder's business and such Holder has no arrangement or
          understanding with any person to participate in the distribution
          of such New Bonds. Any Holder who tenders in the Exchange Offer
          for the purpose of participating in a distribution of the New
          Bonds cannot rely on such interpretation by the staff of the
          Commission and must comply with the registration and prospectus
          delivery requirements of the Securities Act in connection with a
          secondary resale transaction. Under no circumstances may this
          prospectus be used for an offer to resell, resale or other
          retransfer of the New Bonds. In the event that TEP's belief is
          inaccurate, Holders of the New Bonds who transfer New Bonds in
          violation of the prospectus delivery provisions of the Securities
          Act and without an exemption from registration thereunder may
          incur liability thereunder.  TEP does not assume or indemnify
          Holders against such liability. The Exchange Offer is not being
          made to, nor will TEP accept tenders for exchange from, Holders
          of Old Bonds in any jurisdiction in which the Exchange Offer or
          the acceptance thereof would not be in compliance with the
          securities or blue sky laws of such jurisdiction. Each broker-
          dealer that receives New Bonds for its own account in exchange
          for Old Bonds, where such Old Bonds were acquired by such broker-
          dealer as a result of market-making activities or other trading
          activities, must acknowledge that it will deliver a prospectus in
          connection with any resale of such New Bonds.  TEP has not
          entered into any arrangement or understanding with any person to
          distribute the New Bonds to be received in the Exchange Offer.
          See PLAN OF DISTRIBUTION.
    

                                      10
<PAGE>

          TERMS OF THE EXCHANGE OFFER

   
               Upon the terms and subject to the conditions set forth in
          this prospectus and in the Letters of Transmittal, TEP will
          accept any and all Old Bonds properly tendered and not withdrawn
          prior to 5:00 p.m., New York City time, on the Expiration Date.
          TEP will issue $1,000 in principal amount of New Bonds in
          exchange for each $1,000 in principal amount of outstanding Old
          Bonds surrendered in the Exchange Offer.  However, Old Bonds may
          be tendered only in integral multiples of $1,000.
    

               The form and terms of the New Bonds will be the same as the
          form and terms of the Old Bonds except that the New Bonds will be
          registered under the Securities Act and hence will not be subject
          to restrictions on the transfer thereof. The New Bonds will
          evidence the same debt as the Old Bonds. The New Bonds will be
          issued under and entitled to the benefits of the Indenture, which
          also authorized the issuance of the Old Bonds.

   
               As of the date of this prospectus, $140,000,000 in
          aggregate principal amount of the Old Bonds is outstanding. This
          prospectus, together with the Letter of Transmittal, is being
          sent to all registered Holders of the Old Bonds.
    

   
               TEP will be deemed to have accepted validly tendered Old
          Bonds when, as and if TEP shall have given oral or written notice
          thereof to the Exchange Agent.  The Exchange Agent will act as
          agent for the tendering Holders for the purposes of receiving the
          New Bonds from TEP.
    

               Old Bonds that are not tendered for exchange in the
          Exchange Offer will remain outstanding and will be entitled to
          the rights and benefits such Holders have under the Indenture. 
          If any tendered Old Bonds are not accepted for exchange because
          of an invalid tender, the occurrence of certain other events set
          forth herein or otherwise, certificates for any such unaccepted
          Old Bonds will be returned, without expense, to the tendering
          Holder thereof as promptly as practicable after the Expiration
          Date.

   
               Holders who tender Old Bonds in the Exchange Offer will not
          be required to pay brokerage commissions or fees or, subject to
          the instructions in the Letter of Transmittal, transfer taxes
          with respect to the exchange pursuant to the Exchange Offer. TEP
          will pay all charges and expenses, other than certain applicable
          taxes described below, in connection with the Exchange Offer. See
          "-- Fees and Expenses."
    

   
          EXPIRATION DATE; EXTENSIONS; AMENDMENTS TO THE EXCHANGE OFFER
    

   
               The term "Expiration Date," shall mean 5:00 p.m., New York
          City time on __________, 1998, unless TEP, in its sole
          discretion, extends the Exchange Offer, in which case the term
          "Expiration Date" shall mean the latest date and time to which
          the Exchange Offer is extended.
    

   
               In order to extend the Exchange Offer, TEP will notify the
          Exchange Agent of any extension by oral or written notice and
          will mail to the registered Holders an announcement thereof,
          prior to 9:00 a.m., New York City time, on the next business day
          after the then Expiration Date.
    

   
               TEP reserves the right, in its sole discretion,
    

   
                    (a)  to delay accepting any Old Bonds, to extend the
               Exchange Offer or to terminate the Exchange Offer if any of
               the conditions set forth below under "--Conditions" shall
               not have been satisfied by giving oral or written notice of
               such delay, extension or termination to the Exchange Agent
               or
    

   
                    (b)  to amend the terms of the Exchange Offer in any
               manner.
    

   
          Any such delay in acceptances, extension, termination or
          amendment will be followed as promptly as practicable by oral or
          written notice thereof to the registered Holders. If the Exchange
          Offer is amended in a manner determined by TEP to constitute a
     

                                      11
<PAGE>



    
          material change, TEP will promptly disclose such amendment by
          means of a prospectus supplement that will be distributed to the
          registered Holders of the Old Bonds, and TEP will extend the
          Exchange Offer for a period of five to ten business days,
          depending upon the significance of the amendment and the manner
          of disclosure to the registered Holders, if the Exchange Offer
          would otherwise expire during such five to ten business day
          period.
    

   
               Without limiting the manner in which TEP may choose to make
          a public announcement of any delay, extension, amendment or
          termination of the Exchange Offer, TEP will have no obligation to
          publish, advertise, or otherwise communicate any such public
          announcement, other than by making a timely release to an
          appropriate news agency.
    

   
               Upon satisfaction or waiver of all the conditions to the
          Exchange Offer, TEP will accept, promptly after the Expiration
          Date, all Old Bonds properly tendered and will issue the New
          Bonds promptly after acceptance of the Old Bonds.  See " --
          Conditions." For purposes of the Exchange Offer, TEP will be
          deemed to have accepted properly tendered Old Bonds for exchange
          when, as and if TEP shall have given oral or written notice
          thereof to the Exchange Agent.
    

   
               In all cases, issuance of the New Bonds for Old Bonds that
          are accepted for exchange pursuant to the Exchange Offer will be
          made only after timely receipt by the Exchange Agent of a
          properly completed and duly executed Letter of Transmittal and
          all other required documents; provided, however, that TEP
          reserves the absolute right to waive any defects or
          irregularities in the tender or conditions of the Exchange Offer.
          If any tendered Old Bonds are not accepted for any reason set
          forth in the terms and conditions of the Exchange Offer or if Old
          Bonds are submitted for a greater principal amount or a greater
          principal amount, respectively, than the Holder desires to
          exchange, then such unaccepted or non-exchanged Old Bonds
          evidencing the unaccepted portion, as appropriate, will be
          returned without expense to the tendering Holder thereof as
          promptly as practicable after the expiration or termination of
          the Exchange Offer.
    

   
          CONDITIONS TO THE EXCHANGE OFFER
    

   
               Notwithstanding any other term of the Exchange Offer, TEP
          will not be required to exchange any New Bonds for any Old Bonds
          and may terminate the Exchange Offer before the acceptance of any
          Old Bonds for exchange, if:
    

   
                    (a)  any action or proceeding is instituted or
               threatened in any court or by or before any governmental
               agency with respect to the Exchange Offer which, in TEP's
               reasonable judgment, might materially impair the ability of
               TEP to proceed with the Exchange Offer; or
    

   
                    (b)  any law, statute, rule or regulation is proposed,
               adopted or enacted, or any existing law, statute, rule or
               regulation is interpreted by the staff of the SEC, which,
               in TEP's reasonable judgment, might materially impair the
               ability of TEP to proceed with the Exchange Offer.
    

   
               If TEP determines in its sole discretion that any of these
          conditions are not satisfied, TEP may
    

   
                    (a)  refuse to accept any Old Bonds and return all
               tendered Old Bonds to the tendering Holders,
    

   
                    (b)  extend the Exchange Offer and retain all Old
               Bonds tendered prior to the expiration of the Exchange
               Offer, subject, however, to the rights of Holders who
               tendered such Old Bonds to withdraw their tendered Old
               Bonds or
    

   
                    (c)  waive such unsatisfied conditions with respect to
               the Exchange Offer and accept all properly tendered Old
               Bonds which have not been withdrawn. If such waiver
               constitutes a material change to the Exchange Offer, TEP
    

                                    12
<PAGE>

   
               will promptly disclose such waiver by means of a prospectus
               supplement that will be distributed to the registered
               Holders, and TEP will extend the Exchange Offer for a
               period of five to ten business days, depending upon the
               significance of the waiver and the manner of disclosure to
               the registered Holders, if the Exchange Offer would
               otherwise expire during such five to ten business day
               period.
    

          PROCEDURES FOR TENDERING--REGISTERED HOLDERS AND DTC PARTICIPANTS

               REGISTERED HOLDERS OF OLD BONDS, AS WELL AS BENEFICIAL
          OWNERS WHO ARE DIRECT PARTICIPANTS IN DTC, WHO DESIRE TO
          PARTICIPATE IN THE EXCHANGE OFFER SHOULD FOLLOW THE DIRECTIONS
          SET FORTH BELOW AND IN THE LETTER OF TRANSMITTAL.

               ALL OTHER BENEFICIAL OWNERS SHOULD FOLLOW THE INSTRUCTIONS
          RECEIVED FROM THEIR BROKER OR NOMINEE AND SHOULD CONTACT THEIR
          BROKER OR NOMINEE DIRECTLY.  THE INSTRUCTIONS SET FORTH BELOW AND
          IN THE LETTER OF TRANSMITTAL DO NOT APPLY TO SUCH BENEFICIAL
          OWNERS.

          Registered Holders

               To tender in the Exchange Offer, a Holder must complete,
          sign and date the Letter of Transmittal, or facsimile thereof,
          have the signatures thereon guaranteed if required by the Letter
          of Transmittal, and mail or otherwise deliver such Letter of
          Transmittal or such facsimile to the Exchange Agent prior to the
          Expiration Date.  In addition, either

   
                    (a)  certificates for such Old Bonds must be received
               by the Exchange Agent along with the Letter of Transmittal,
               or
    

   
                    (b)  the Holder must comply with the guaranteed
               delivery procedures described below.
    

               To be tendered effectively, the Letter of Transmittal and
          other required documents must be received by the Exchange Agent
          at the address set forth below under "--Exchange Agent" prior to
          the Expiration Date.

   
               The tender by a Holder which is not withdrawn prior to the
          Expiration Date will constitute an agreement between such Holder
          and TEP in accordance with the terms and subject to the
          conditions set forth herein and in the Letter of Transmittal.
    

   
               THE METHOD OF DELIVERY OF OLD BONDS AND THE LETTER OF
          TRANSMITTAL AND ALL OTHER REQUIRED DOCUMENTS TO THE EXCHANGE
          AGENT IS AT THE ELECTION AND RISK OF THE HOLDER. INSTEAD OF
          DELIVERY BY MAIL, IT IS RECOMMENDED THAT HOLDERS USE AN OVERNIGHT
          OR HAND DELIVERY SERVICE. IN ALL CASES, SUFFICIENT TIME SHOULD BE
          ALLOWED TO ASSURE DELIVERY TO THE EXCHANGE AGENT BEFORE THE
          EXPIRATION DATE. NO LETTER OF TRANSMITTAL OR OLD BONDS SHOULD BE
          SENT TO TEP. HOLDERS MAY REQUEST THEIR RESPECTIVE BROKERS,
          DEALERS, COMMERCIAL BANKS, TRUST COMPANIES OR NOMINEES TO EFFECT
          THE ABOVE TRANSACTIONS FOR SUCH HOLDERS.
    

               Signatures on a Letter of Transmittal or a notice of
          withdrawal, as the case may be, must be guaranteed by an Eligible
          Institution (as defined below) unless the Old Bonds tendered
          pursuant thereto is tendered

   
                    (a)  by a registered Holder who has not completed the
               box entitled "Special Payment Instructions" or "Special
               Delivery Instructions" on the Letter of Transmittal or
    

   
                    (b)  for the account of an Eligible Institution (as
               defined below).
    
   
          In the event that signatures on a Letter of Transmittal or a
          notice of withdrawal, as the case may be, are required to be
          guaranteed, such guarantor must be a member firm of a registered
    

                                    13
<PAGE>

   
          national securities exchange or of the National Association of
          Securities Dealers, Inc., a commercial bank or trust company
          having an office or correspondent in the United States or an
          "eligible guarantor institution" within the meaning of Rule
          17Ad-15 under the Exchange Act (an "Eligible Institution").

               If the Letter of Transmittal is signed by a person other
          than the registered Holder of any Old Bonds listed therein, such
          Old Bonds must be endorsed or accompanied by a properly completed
          bond power signed by such registered Holder as such registered
          Holder's name appears on such Old Bonds.


    
   
               If the Letter of Transmittal or any Old Bonds or bond or
          stock powers are signed by trustees, executors, administrators,
          guardians, attorneys-in-fact, officers of corporations or others
          acting in a fiduciary or representative capacity, such persons
          should so indicate when signing, and unless waived by TEP,
          evidence satisfactory to TEP of their authority to so act must be
          submitted with the Letter of Transmittal.
    

               Holders who wish to tender their Old Bonds and

   
                    (a)  whose Old Bonds are not immediately available or
    

   
                    (b)  who cannot deliver their Old Bonds, the Letter of
               Transmittal or any other required documents to the Exchange
               Agent prior to the Expiration Date, may effect a tender if:
    

   
                           (1)  The tender is made through an
                    Eligible Institution;
    

   
                           (2)  Prior to the Expiration Date, the
                    Exchange Agent receives from such Eligible
                    Institution a properly completed and duly
                    executed Notice of Guaranteed Delivery (by
                    facsimile transmission, mail or hand
                    delivery) setting forth the name and address
                    of the Holder, the certificate number(s) of
                    such Old Bonds and the principal amount of
                    Old Bonds tendered stating that the tender is
                    being made thereby and guaranteeing that,
                    within three New York Stock Exchange trading
                    days after the Expiration Date, the Letter of
                    Transmittal (or facsimile thereof) together
                    with the certificate(s) representing the Old
                    Bonds and any other documents required by the
                    Letter of Transmittal will be deposited by
                    the Eligible Institution with the Exchange
                    Agent; and
    

   
                           (3)  Such properly completed and
                    executed Letter of Transmittal (or facsimile
                    thereof), as well as the certificate(s)
                    representing all tendered Old Bonds in proper
                    form for transfer and other documents
                    required by the Letter of Transmittal are
                    received by the Exchange Agent within three
                    New York Stock Exchange trading days after
                    the Expiration Date.
    

             Upon request to the Exchange Agent a Notice of Guaranteed
          Delivery will be sent to Holders who wish to tender their Old
          Bonds according to the guaranteed delivery procedures set forth
          above.

          DTC Participants

             Any financial institution that is a participant in DTC's
          systems may make book-entry delivery of Old Bonds by causing DTC
          to transfer such Old Bonds into the Exchange Agent's account at
          DTC in accordance with DTC's procedures for transfer.  Such
          delivery must be accompanied be either

   
                (a)  the Letter of Transmittal or facsimile thereof, with
             any required signature guarantees or
    

   
                (b)  an Agent's Message (as hereinafter defined),
    
                                      14
<PAGE>

   
          and any other required documents, must, in any case, be
          transmitted to and received by the Exchange Agent at the address
          set forth below under "--Exchange Agent" on or prior to the
          Expiration Date or the guaranteed delivery procedures described
          below must be complied with.  The Exchange Agent will make a
          request to establish an account with respect to the Old Bonds at
          DTC for purposes of the Exchange Offer within two business days
          after the date of this prospectus.
    

   
             The term "Agent's Message" means a message, transmitted by
          DTC, received by the Exchange Agent and forming part of a book-
          entry transfer where a tender is initiated, which states that DTC
          has received an express acknowledgement from a participant
          tendering Old Bonds that such participant has received and agrees
          to be bound by the terms of the Letter of Transmittal and that
          TEP may enforce such agreement against the participant.
    

          Miscellaneous

   
             All questions as to the validity, form, eligibility
          (including time of receipt), acceptance of tendered Old Bonds and
          withdrawal of tendered Old Bonds will be determined by TEP in its
          sole discretion, which determination will be final and binding.
          TEP reserves the absolute right to reject any and all Old Bonds
          not properly tendered or any Old Bonds TEP's acceptance of which
          would, in the opinion of counsel for TEP, be unlawful. TEP also
          reserves the right to waive any defects, irregularities or
          conditions of tender as to particular Old Bonds.  TEP's
          interpretation of the terms and conditions of the Exchange Offer
          (including the instructions in the Letter of Transmittal) will be
          final and binding on all parties.  Unless waived, any defects or
          irregularities in connection with tenders of Old Bonds must be
          cured within such time as TEP shall determine. Although TEP
          intends to notify Holders of defects or irregularities with
          respect to tenders of Old Bonds, none of TEP, the Exchange Agent,
          or any other person shall incur any liability for failure to give
          such notification.  Tenders of Old Bonds will not be deemed to
          have been made until such defects or irregularities have been
          cured or waived.  Any Old Bonds received by the Exchange Agent
          that are not properly tendered and as to which the defects or
          irregularities have not been cured or waived will be returned by
    

   
          the Exchange Agent to the tendering Holders, unless otherwise
          provided in the Letter of Transmittal, as soon as practicable
          following the Expiration Date.
    

   
             By tendering, each Holder or the Person receiving the New
          Bonds, as the case may be will be deemed to represent to TEP
          that, among other things,
    

   
             .  the New Bonds acquired pursuant to the Exchange Offer are
                being obtained in the ordinary course of business of the
                Person receiving such New Bonds, whether or not such
                person is the Holder,
    

   
             .  neither the Holder nor any such other person is engaging
                in or intends to engage in a distribution of such New
                Bonds,
    

   
             .  neither the Holder nor any such other person has an
                arrangement or understanding with any Person to
                participate in the distribution of such New Bonds, and
    

   
             .  neither the Holder nor any such other Person is an
                "affiliate," as defined in Rule 405 of the Securities Act,
                of TEP.
    

             In all cases, issuance of New Bonds that are accepted for
          exchange pursuant to the Exchange Offer will be made only after
          timely receipt by the Exchange Agent of certificates for such Old
          Bonds or a timely Book-Entry Confirmation of such Old Bonds into
  

                                      15
<PAGE>


          the Exchange Agent's account at DTC, a properly completed and
          duly executed Letter of Transmittal and all other required
          documents. If any tendered Old Bonds are not accepted for any
          reason set forth in the terms and conditions of the Exchange
          Offer or if Old Bonds are submitted for a greater principal
          amount than the Holder desires to exchange, such unaccepted or
          non-exchanged Old Bonds will be returned without expense to the
          tendering Holder thereof (or, in the case of Old Bonds tendered
          by book-entry transfer into the Exchange Agent's account at DTC
          pursuant to the book-entry transfer procedures described below,
          such non-exchanged Old Bonds will be credited to an account
          maintained with such DTC) as promptly as practicable after the
          expiration or termination of the Exchange Offer.

   
             TEP reserves the right in its sole discretion to purchase or
          make offers for any Old Bonds that remain outstanding subsequent
          to the Expiration Date or, as set forth above under "--Conditions," 
          to terminate the Exchange Offer and, to the extent permitted by 
          applicable law, purchase Old Bonds in the open market, in privately 
          negotiated transactions or otherwise. The terms of any such 
          purchases or offers could differ from the terms of the Exchange 
          Offer.
    

   
          WITHDRAWAL OF TENDERS OF OLD BONDS
    

             Except as otherwise provided herein, tenders of Old Bonds may
          be withdrawn at any time prior to 5:00 p.m., New York City time,
          on the Expiration Date.

             To withdraw a tender of Old Bonds in the Exchange Offer, a
          written or facsimile transmission notice of withdrawal must be
          received by the Exchange Agent at its address set forth herein
          prior to 5:00 p.m., New York City time, on the Expiration Date.
          Any such notice of withdrawal must

   
                (a)  specify the name of the person having deposited the
             Old Bonds to be withdrawn (the "Depositor"),
    

   
                (b)  identify the Old Bonds to be withdrawn (including the
             certificate number or),
    

      
                 (c)  be signed by the Holder in the same manner as the
             original signature on the Letter of Transmittal by which such
             Old Bonds were tendered (including any required signature
             guarantees) or be accompanied by documents of transfer
    

   
             sufficient to have the Trustee with respect to the Old Bonds
             register the transfer of such Old Bonds in the name of the
             person withdrawing the tender and
    

   
                (d)  specify the name in which any such Old Bonds are to
             be registered, if different from that of the Depositor. If
             Old Bonds have been tendered pursuant to book-entry transfer,
             any notice of withdrawal must specify the name and number of
             the account at DTC to be credited with the withdrawn Old
             Bonds, in which case a notice of withdrawal will be effective
             if delivered to the Exchange Agent by any method of delivery
             described in this paragraph.
    

   
             All questions as to the validity, form and eligibility
          (including time of receipt) of such notices will be determined by
          TEP, whose determination shall be final and binding on all
          parties. Any Old Bonds so withdrawn will be deemed not to have
          been validly tendered for purposes of the Exchange Offer and will
          be returned to the Holder thereof without cost to such Holder as
          soon as practicable after withdrawal; and no New Bonds will be
          issued with respect thereto unless the Old Bonds so withdrawn are
          validly retendered.  Properly withdrawn Old Bonds may be
          retendered by following one of the procedures described above
          under "-- PROCEDURES FOR TENDERING" at any time prior to the
          Expiration Date.
    

          EXCHANGE AGENT

   
             Bank of Montreal Trust Company has been appointed as Exchange
          Agent of the Exchange Offer. Questions and requests for
          assistance, requests for additional copies of this prospectus or
          of the Letter of Transmittal and requests for Notice of
          Guaranteed Delivery with respect to the exchange of the Old Bonds
          should be directed to the Exchange Agent addressed as follows:
    

             Bank of Montreal Trust Company
             88 Pine Street
             Wall Street Plaza


                                     16
<PAGE>
             19th Floor
             New York, New York  10005


          By Telephone: 

   
             (212) 701-7636
    

          By Facsimile:

             (212) 701-7640

          FEES AND EXPENSES

   
             The expenses of soliciting tenders will be paid by TEP. The
          principal solicitation is being made by mail; however, additional
          solicitation may be made by telecopier, telephone or in person by
          officers and regular employees of TEP and its affiliates.
    

   
             TEP has not retained any dealer-manager in connection with
          the Exchange Offer and will not make any payments to brokers-
          dealers or others soliciting acceptances of the Exchange Offer.
          TEP, however, will pay the Exchange Agent reasonable and
          customary fees for their services and will reimburse them for
          their reasonable out-of-pocket expenses in connection therewith.
    

   
             The cash expenses to be incurred in connection with the
          Exchange Offer will be paid by TEP and are estimated in the
          aggregate to be approximately $100,000. Such expenses include
          registration fees, fees and expenses of the Exchange Agent
          accounting and legal fees and printing costs, among others.
    

   
             TEP will pay all transfer taxes, if any, applicable to the
          exchange of the Old Bonds pursuant to the Exchange Offer. If,
          however, certificates representing New Bonds for principal
          amounts or number of shares not tendered or accepted for exchange
          are to be delivered to, or are to be issued in the name of, any
          person other than the registered Holder of Old Bonds tendered, or
          if tendered the Old Bonds are registered in the name of, any
          person other than the person signing the Letter of Transmittal,
          or if a transfer tax is imposed for any reason other than the
          exchange of the Old Bonds pursuant to the Exchange Offer, then
          the amount of any such transfer taxes (whether imposed on the
          registered Holder or any other persons) will be payable by the
          tendering Holder. If satisfactory evidence of payment of such
          taxes or exemption therefrom is not submitted with the Letter of
          Transmittal, the amount of such transfer taxes will be billed
          directly to such tendering Holder.
    


                             DESCRIPTION OF THE NEW BONDS

          GENERAL

   
             TEP will issue the New Bonds under the Indenture.  See
          DESCRIPTION OF THE INDENTURE.  The terms of the New Bonds will
          include those stated therein and those stated or incorporated in
          the Indenture.  The following summary of certain terms of the New
          Bonds is not complete and is subject in all respects to the
          provisions of, and is qualified in its entirety by reference to,
          the New Bonds and the Indenture.
    



                                     17
<PAGE>
      
           PAYMENT AND PAYING AGENTS

   
             TEP will pay interest on the New Bonds, at the rate of 7 1/2%
          per annum, on February 1 and August 1 of each year, commencing
          ________ 1, 1999.  Interest will be paid to the person in whose
          name such New Bond is registered as of the close of business on
          the January 15 or July 15 next preceding each such Interest
          Payment Date, except that interest payable at maturity (whether
          at stated maturity, upon redemption or otherwise, hereinafter
          "Maturity") will be paid to the person to whom principal is paid. 
          However, if there has been a default in the payment of interest
          on any New Bond, such defaulted interest may be payable to the
          holder of such New Bond as of the close of business on a date
          selected by the Trustee which is not more than 15 days and not
          less than 10 days prior to the date proposed by TEP for payment
          of such defaulted interest or in any other lawful manner not
          inconsistent with the requirements of any securities exchange on
          which such New Bond may be listed, if the Trustee deems such
          manner of payment practicable.  Interest on the New Bonds will be
          computed on the basis of a 360-day year consisting of twelve 30-
          day months.
    

   
             TEP will pay the principal of and premium, if any, and
          interest on the New Bonds at Maturity upon presentation of the
          New Bonds at the corporate trust office of Bank of Montreal Trust
          Company in New York, New York, as paying agent for TEP.  TEP may
          change, may appoint one or more additional paying agents
          (including TEP) and may remove any paying agent, all at its
          discretion.
    

          REGISTRATION AND TRANSFER

   
             Bondholders may register the transfer of New Bonds, and may
          exchange New Bonds for other New  Bonds of authorized
          denominations having the same aggregate principal amount, at the
          corporate trust office of Bank of Montreal Trust Company in New
          York, New York, as security registrar.  TEP may change the place
          for registration of transfer and exchange of the New Bonds and
          may designate one or more additional places for such registration
          and exchange, all at its discretion.  No service charge will be
          made for any transfer or exchange of the New Bonds, but TEP may
          require payment of a sum sufficient to cover any tax or other
          governmental charge that may be imposed in connection with any
          registration of transfer or exchange of the New Bonds.  TEP will
          not be required to execute or to provide for the registration of
          transfer of or the exchange of (a) any New Bond during a period
          of 15 days prior to giving any notice of redemption or (b) any
          New Bond selected for redemption in whole or in part, except the
          unredeemed portion of any New Bond being redeemed in part.
    

          REDEMPTION

   
             TEP may, at its option, redeem the New Bonds, in whole at any
          time or in part from time to time, at a redemption price equal to
          the greater of (a) 100% of the principal amount of the New Bonds
          to be redeemed and (b) the sum of the present values of the
          remaining scheduled payments of principal of and interest on the
          New Bonds discounted to the date fixed for redemption on a
          semiannual basis (assuming a 360-day year consisting of twelve
          30-day months) at a discount rate equal to the Treasury Rate plus
          50 basis points, plus, in either case, accrued interest to the
          date of redemption.  For this purpose:
    

                 "Comparable Treasury Issue" means the United States
             Treasury security selected by an Independent Investment
             Banker as having a maturity comparable to the remaining term
             to the Stated Maturity of the New Bonds that would be
             utilized, at the time of selection and in accordance with


                                     18
<PAGE>

             customary financial practice, in pricing new issues of
             corporate debt securities of comparable maturity to the
             remaining term of the New Bonds.

   
                 "Comparable Treasury Price" means, with respect to the
             redemption of any New Bonds, the  Reference Treasury Dealer
             Quotation (expressed as a percentage of principal amount) on
             the third Business Day next preceding the date fixed for such
             redemption or, if such New Bonds are to be defeased as
             described in DESCRIPTION OF THE INDENTURE - "Satisfaction and
             Discharge" on page 33 prior to such redemption date, then on
             the third Business Day next preceding the date of such
             defeasance; provided, however, that if more than one
             Reference Treasury Dealer has been appointed, "Comparable
             Treasury Price" means the arithmetical mean of the Reference
             Treasury Dealer Quotations.
    

   
                 "Independent Investment Banker" means an independent
             investment banking institution of national standing appointed
             by TEP.
    

   
                 "Reference Treasury Dealer" means each primary United
             States government securities dealer in The City of New York
             appointed by TEP.
    

   
                 "Reference Treasury Dealer Quotation" means, with respect
             to a Reference Treasury Dealer and the redemption of any New
             Bonds, the average, as determined by TEP, of the bid and
             asked prices for the Comparable Treasury Issue (expressed in
             each case as a percentage of its principal amount and quoted
             in writing to TEP by such Reference Treasury Dealer at 5:00
             p.m. on the third Business Day next preceding the date fixed
             for such redemption or, if such New Bonds are to be defeased
             prior to such redemption date, then on the third Business Day
             next preceding such defeasance).
    

                 "Treasury Rate" means, with respect to any date fixed for
             the redemption of any New Bonds or, if such New Bonds are to
             be defeased prior to such redemption date, the date of such
             defeasance

   
                 (a)  the yield, under the heading which represents the
             average for the immediately preceding week, appearing in the
             most recently published statistical release designated
             "H.15(519)" or any successor publication which is published
             weekly by the Board of Governors of the Federal Reserve
             System and which establishes yields on actively traded United
             States Treasury securities adjusted to constant maturity
             under the caption "Treasury Constant Maturities", for the
             maturity corresponding to the Comparable Treasury Issue (if
             no maturity is within three months before or after the Stated
             Maturity of the New Bonds, yields for the two published
             maturities most closely corresponding to the Comparable
             Treasury Issue shall be determined and the Treasury Rate
             shall be interpolated or extrapolated from such yields on a
             straight line basis, rounding to the nearest month) or
    

   
                 (b)  if such release (or any successor release) is not
             published during the week preceding the calculation date or
             does not contain such yields, the rate per annum equal to the
             semi-annual equivalent yield to maturity of the Comparable
             Treasury Issue, calculated using a price for the Comparable
             Treasury Issue (expressed as a percentage of its principal
             amount) equal to the Comparable Treasury Price for such
             redemption date or defeasance date, as the case may be.
    



                                      19
<PAGE>

          The Treasury Rate will be calculated on the third Business Day
          preceding such redemption date or defeasance date, as the case
          may be.

   
             TEP may redeem the New Bonds only upon notice by mail not
          less than 30 nor more than 60 days prior to the date fixed for
          redemption, and, if less than all the New Bonds are to be
          redeemed, the particular New Bonds to be redeemed will be
          selected by such method as the Security Registrar deems fair and
          appropriate.
    

   
             Any notice of redemption at the option of TEP may state that
          such redemption will be conditional upon receipt by the Paying
          Agent, on or prior to the dates fixed for such redemption, of
          money sufficient to pay the principal of and premium, if any, and
          interest on such New Bonds and that if such money has not been so
          received, such notice will be of no force or effect and TEP will
          not be required to redeem such New Bonds.
    

          BOOK-ENTRY SYSTEM

             The Depository Trust Company ("DTC") will act as securities
          depositary for the New Bonds.  At the request of the holder, the
          New Bonds may be issued as fully-registered securities registered
          in the name of Cede & Co., as nominee of DTC, and deposited with
          DTC or a custodian acting on behalf of DTC.

             The following is based upon information furnished by DTC:

                 DTC is a limited-purpose trust company organized under
             the New York Banking Law, a "banking organization" within the
             meaning of the New York Banking Law, a member of the Federal
             Reserve System, a "clearing corporation" within the meaning
             of the New York Uniform Commercial Code and a "clearing
             agency" registered pursuant to the provisions of Section 17A
             of the Exchange Act.  DTC holds securities that its
             participants ("Participants") deposit with DTC. DTC also
             facilitates the settlement among Participants of securities
             transactions, such as transfers and pledges, in deposited
             securities through electronic computerized book-entry changes
             in Participants' accounts, thereby eliminating the need for
             physical movement of securities certificates. "Direct
             Participants" in DTC include securities brokers and dealers,
             banks, trust companies, clearing corporations and certain
             other organizations.  DTC is owned by a number of its Direct
             Participants and by the New York Stock Exchange, Inc., the
             American Stock Exchange, Inc., and the National Association
             of Securities Dealers, Inc. Access to the DTC system is also
             available to others, such as securities brokers and dealers,
             banks and trust companies that clear transactions through or
             maintain a custodial relationship with a Direct Participant
             either directly or indirectly ("Indirect Participants").  The
             rules applicable to DTC and its Participants are on file with
             the SEC.

                 Purchases of New Bonds within the DTC system must be made
             by or through Direct Participants, which will receive a
             credit for the New Bonds on DTC's records. The ownership
             interest of each actual purchaser of each New Bond
             ("Beneficial Owner") is in turn to be recorded on the Direct
             and Indirect Participants' records. Beneficial Owners will
             not receive written confirmation from DTC of their purchase,
             but Beneficial Owners are expected to receive written
             confirmation providing details of the transaction, as well as
             periodic statements of their holdings, from the Direct or
             Indirect Participants through which the Beneficial Owners
             entered into the transaction. Transfers of ownership
             interests in the New Bonds are to be accomplished by entries

                                     20
<PAGE>


             made on the books of Participants acting on behalf of
             Beneficial Owners. Beneficial Owners will not receive
             certificates representing their ownership interests in the
             New Bonds, except in the event that use of the book-entry
             system for the New Bonds is discontinued, as discussed below.

                 The deposit of New Bonds with DTC and their registration
             in the name of Cede & Co. effect no change in beneficial
             ownership. DTC has no knowledge of the actual Beneficial
             Owners of the New Bonds; DTC's records reflect only the
             identity of the Direct Participants to whose accounts such
             New Bonds are credited, which may or may not be the
             Beneficial Owners. The Participants will remain responsible
             for keeping account of their holdings on behalf of their
             customers.

                 The delivery of notices and other communications by DTC
             to Direct Participants, by Direct Participants to Indirect
             Participants, and by Direct Participants and Indirect
             Participants to Beneficial Owners will be governed by
             arrangements among them, subject to any statutory or
             regulatory requirements as may be in effect from time to
             time.

                 Redemption notices will be sent to Cede & Co., as
             registered Holder of the New Bonds.  If less than all of the
             New Bonds are being redeemed, DTC's practice is to determine
             by lot the amount of the interest of each Direct Participant
             to be redeemed.

   
                 Neither DTC nor Cede & Co. will itself consent or vote
             with respect to New Bonds. Under its usual procedures, DTC
             mails an Omnibus Proxy to TEP as soon as possible after the
             record date. The Omnibus Proxy assigns Cede & Co.'s
             consenting or voting rights to those Direct Participants to
             whose accounts the New Bonds are credited on the record date
             (identified in a listing attached to the Omnibus Proxy).
    

   
                 Payments on the New Bonds will be made to DTC. DTC's
             practice is to credit the accounts of Direct Participants on
             the relevant payment date in accordance with their respective
             holdings shown on DTC's records unless DTC has reason to
             believe that it will not receive payment on such payment
             date. Payments by Participants to Beneficial Owners will be
             governed by standing instructions and customary practices, as
             is the case with securities held for the accounts of
             customers in bearer form or registered in "street name", and
             will be the responsibility of such Participants and not of
             DTC or TEP, subject to any statutory or regulatory
             requirements as may be in effect from time to time. Payment
             to DTC will be the responsibility of TEP, disbursement of
             payments to Direct Participants will be the responsibility of
             DTC, and further disbursement of payments to the Beneficial
             Owners will be the responsibility of Direct Participants and
             Indirect Participants.
    

   
             DTC may discontinue providing its services as securities
          depositary with respect to the New Bonds at any time by giving
          notice to TEP. Under such circumstances, in the event that a
          successor securities depositary is not obtained, certificates
          representing New Bonds will be delivered to the Beneficial
          Owners.  Additionally, TEP may decide to discontinue use of the
          system of book-entry transfers through DTC (or a successor
          depositary). In that event, certificates representing the New
          Bonds will be delivered.
    

   
             The information in this section concerning DTC and DTC's
          book-entry system and procedures has been obtained from sources
          considered to be reliable, but TEP takes no responsibility for
          the accuracy thereof.  None of TEP, the Trustee or the Initial
          Purchasers will have any responsibility or liability for any
          aspect of the records relating to, or payments made on account
          of, beneficial ownership interests in the New Bonds or for
          maintaining, supervising or reviewing any records relating
    

                                     21
<PAGE>

    
          thereto maintained by DTC or any of its Direct or Indirect
          Participants or for any other matter relating to the actions and
          practices of DTC or any of its Direct or Indirect Participants.
    


                             DESCRIPTION OF THE INDENTURE

          GENERAL

   
             TEP will issue the New Bonds under the Indenture, dated as of
          August 1, 1998 (the "Original Indenture"), between TEP and Bank
          of Montreal Trust Company, as trustee (the "Trustee"), the
          Original Indenture, as amended and supplemented from time to
          time, being hereinafter referred to as the "Indenture".  The
          terms of the New Bonds will include those stated in the Indenture
          and those made part of the Indenture by the Trust Indenture Act
          of 1939, as amended.  The following summary of certain terms of
          the Indenture is not complete and is subject in all respects to
          the provisions of, and is qualified in its entirety by reference
          to, the Indenture and the Trust Indenture Act.  TEP has filed the
          Indenture and the supplemental indenture establishing the series
          of Old Bonds and New Bonds as exhibits to the registration
          statement of which this prospectus is a part.  Capitalized terms
          used under this heading which are not otherwise defined in this
          prospectus have the meanings set forth in the Indenture. 
          Whenever particular provisions or defined terms in the Indenture
          are referred to, such provisions or defined terms are
          incorporated by reference herein.
    

             The Indenture provides for the issuance thereunder of
          multiple series of debt securities, in addition to the New Bonds. 
          The New Bonds and all other debt securities issued under the
          Indenture are collectively referred to herein as the "Indenture
          Securities".  Each series of Indenture Securities will rank pari
          passu with all other series of Indenture Securities, except as
          otherwise provided in the Indenture.

          SECURITY

             General

   
             The Indenture does not constitute a direct mortgage or other
          lien on properties of TEP.  However, as described below, until
          the Collateral Release Date (as hereinafter defined) the Trustee
          will hold, for the benefit of the Holders of all Indenture
          Securities, Class A Bonds (as hereinafter defined) equal in
          aggregate principal amount to the Outstanding Indenture
          Securities.  The Class A Bonds, in turn, are secured by a first
          mortgage lien on substantially all the utility plant assets of
          TEP.  See Description of the 1941 Mortgage and Description of the
          1992 Mortgage. However, after the Collateral Release Date, the
          Indenture Securities will be unsecured and will rank pari passu
          with all other unsecured and unsubordinated indebtedness of TEP. 
          As described under "Limitation on Secured Debt", after the
          Collateral Release Date the Indenture will impose a limitation on
          the issuance or assumption by TEP of Secured Debt (as hereinafter
          defined).
    

             "Class A Bonds" means (a) as of any time while the 1941
          Mortgage remains in effect, bonds or other obligations now or
          hereinafter issued under the 1941 Mortgage and (b) as of any time
          after the 1941 Mortgage has been satisfied and discharged and
          while the 1992 Mortgage remains in effect, bonds or other
          obligations now or hereinafter issued under the 1992 Mortgage.

             "Class A Mortgage" means either the 1941 Mortgage or the 1992
          Mortgage;

                                       22
<PAGE>

   
             "1941 Mortgage" means the Indenture, dated as of April 1,
          1941, of TEP to The Chase Manhattan Bank, as trustee, as such
          indenture has been heretofore and is hereafter amended and
          supplemented.  The 1941 Mortgage secures TEP's outstanding 1941
          Mortgage Bonds.
    

   
             "1992 Mortgage" means the Indenture of Mortgage and Deed of
          Trust, dated as of December 1, 1992, of TEP to Bank of Montreal
          Trust Company, as trustee, as such indenture has been heretofore
          and is hereafter amended and supplemented.  The 1992 Mortgage
          secures TEP's outstanding 1992 Mortgage Bonds.  (See Sec. 101.)
    

             Class A Bonds

             Except as otherwise contemplated below under this heading and
          under "Defeasance", all Outstanding Indenture Securities, equally
          and ratably, will enjoy the benefit of Class A Bonds delivered to
          the Trustee as the basis for the authentication and delivery of
          an equal principal amount of Indenture Securities.

   
             So long as the Collateral Release Date (as hereinafter
          defined) has not occurred, prior to the authentication and
          delivery of Indenture Securities of any series TEP will issue a
          corresponding series of Class A Bonds.  Such Class A Bonds
    

                 (a)  will be delivered to, and registered in the name of,
             the Trustee or its nominee and will be owned and held by the
             Trustee, subject to the provisions of the Indenture, for the
             benefit of the Holders of all Indenture Securities
             Outstanding from time to time;

                 (b)  will mature (or be redeemed) on the same dates, and

   
                 (c)  will contain, in addition to any mandatory
             redemption provisions applicable to all Class A Bonds
             Outstanding under the related Class A Indenture, mandatory
             redemption provisions correlative to provisions for mandatory
             redemption, or redemption at the option of the Holder, of
             such Indenture Securities; and (d)(i) may, but need not, bear
             interest and (ii) may, but need not, contain provisions for
             the redemption thereof at the option of TEP, any such
             redemption to be made at a redemption price or prices not
             less than the principal amount of such Class A Bonds.
    

   
          To the extent that Class A Bonds do not bear interest, Holders of
          Indenture Securities will not have the benefit of the lien of a
          Class A Mortgage in respect of an amount equal to accrued
          interest, if any, on the Indenture Securities.  (See Sec. 312.) 
          The Class A Bonds delivered in connection with the authentication
          and delivery of the New Bonds will not bear interest.  
    

   
             Any payment by TEP of principal of or premium or interest on
          the Class A Bonds delivered to and held by the Trustee will be
          applied by the Trustee to the payment of any principal, premium
          or interest, as the case may be, in respect of the Indenture
          Securities which is then due and, to the extent of such payment,
          the obligation of TEP under the Indenture to make such payment in
          respect of the Indenture Securities will be deemed satisfied and
          discharged.  If, at the time of any such payment of principal of
          Class A Bonds, there is no principal then due in respect of the
          Indenture Securities, such payment will be held by the Trustee,
          in trust, and applied to the payment of the principal of an equal
          principal amount of Indenture Securities at Maturity.  Pending
          such application, the proceeds of such payment will be invested,
          at the direction of TEP, in Investment Securities.  If, at the
    


                                     23
<PAGE>

      
      
          time of any such payment of premium or interest on Class A Bonds,
          there is no premium or interest then due in respect of the
          Indenture Securities, such payment will be remitted to TEP at its
          request.  Any payment by TEP of principal of or premium or
          interest on Indenture Securities authenticated and delivered on
          the basis of the delivery to the Trustee of Class A Bonds (other
          than by application of the proceeds of a payment in respect of
          such Class A Bonds) will, to the extent thereof, be deemed to
          satisfy and discharge the obligation of TEP, if any, to make a
          payment of principal, premium or interest, as the case may be, in
          respect of such Class A Bonds which is then due.  (See Sec. 314.)
    

   
             The Trustee may not sell, assign or otherwise transfer any
          Class A Bonds except to a successor trustee under the Indenture. 
          At the time any Indenture Securities which have been
          authenticated and delivered upon the basis of Class A Bonds cease
          to be outstanding (other than as a result of the application of
          the proceeds of the payment or redemption of such Class A Bonds),
          and upon the satisfaction of certain conditions, the Trustee will
          surrender to, or upon the order of, TEP an equal principal amount
          of such Class A Bonds having the same Stated Maturity and
          mandatory redemption provisions as such Indenture Securities. 
          (See Secs. 315 and 316.)
    

             Release of Class A Bonds

   
             When no Class A Bonds are outstanding under a Class A
          Mortgage except for Class A Bonds delivered to and held by the
          Trustee, then, at the request of TEP and subject to the
          satisfaction of certain conditions, the Trustee will surrender
          such Class A Bonds for cancellation, the related Class A Mortgage
          will be satisfied and discharged and the lien of such Class A
          Mortgage on TEP's property subject thereto will cease to exist;
          provided, however, that if, at the time of any such surrender of
          Class A Bonds outstanding under the 1941 Mortgage, any Class A
          Bonds are outstanding under the 1992 Mortgage, TEP will deliver
          to the Trustee Class A Bonds outstanding under the 1992 Mortgage
    

   
          in the same aggregate principal amount or amounts, bearing
          interest at the same rate  or rates and having the same Stated
          Maturity or Maturities as the Class A Bonds to be surrendered. 
          (See Sec. 318.)
    

   
             On and after the date on which the Trustee surrenders all
          Class A Bonds then held by it as contemplated in the preceding
          paragraph without any new Class A Bonds being delivered in
          substitution therefor (such date being sometimes herein called
          the "Collateral Release Date"), the Indenture Securities will be
          unsecured obligations of TEP and will rank pari passu with all
          other unsecured and unsubordinated indebtedness of TEP.  However,
          on and after the Collateral Release Date, the Indenture will
          impose limitations on the issuance or assumption by TEP of
          Secured Debt.  See "Limitation on Secured Debt" below.
    

          LIMITATION ON SECURED DEBT

   
             On and after the Collateral Release Date, TEP will not
          create, issue, incur or assume any Secured Debt other than
          Permitted Secured Debt (as hereinafter defined) without the
          consent of the Holders of a majority in principal amount of the
          Outstanding Indenture Securities of all series and Tranches,
          considered as one class; provided, however, that the foregoing
          covenant will not prohibit the creation, issuance, incurrence or
          assumption of any Secured Debt if either
    

   
                 (a)  TEP shall make effective provision whereby all
             Indenture Securities then Outstanding will be secured equally
             and ratably with such Secured Debt; or
    

                                      24
<PAGE>

   
                 (b)  TEP delivers to the Trustee bonds, notes or other
             evidences of indebtedness secured by the Lien (as hereinafter
             defined) which secures such Secured Debt in an aggregate
             principal amount equal to the aggregate principal amount of
             the Indenture Securities then Outstanding and meeting certain
             other requirements set forth in the Indenture.
    

             "Debt", with respect to any Person, means indebtedness of
          such Person for borrowed money evidenced by a bond, debenture,
          note or other written instrument or agreement by which such
          Person is obligated to repay such borrowed money and any guaranty
          by such Person of any such indebtedness of another Person. 
          "Debt" does not include, among other things,

                 (x)  indebtedness of such Person under any installment
             sale or conditional sale agreement or any other agreement
             relating to indebtedness for the deferred purchase price of
             property or services,

                 (y)  obligations of such Person under any lease agreement
             (including any lease intended as security), whether or not
             such obligations are required to be capitalized on the
             balance sheet of such Person under generally accepted
             accounting principles, or

                 (z)  liabilities secured by any Lien on any property
             owned by such Person if and to the extent that such Person
             has not assumed or otherwise become liable for the payment
             thereof.

   
             "Excepted Property" includes, among other things, cash,
          deposit accounts, securities; contracts, leases and other
          agreements of all kinds; contract rights, bills, notes and other
          instruments; revenues, accounts and accounts receivable and
          unbilled revenues, claims, demands and judgments; governmental
          and other licenses, permits, franchises, consents and allowances;
          certain intellectual property rights and other general
          intangibles; vehicles, movable equipment and aircraft; all goods,
    

   
          stock in trade, wares, merchandise and inventory held for sale or
          lease in the ordinary course of business; materials, supplies,
          inventory and other personal property consumable in the operation
          of any property of TEP; fuel; portable tools and equipment;
          furniture and furnishings; computers and data processing,
          telecommunications and other facilities used primarily for
          administrative or clerical purposes or otherwise not used in
          connection with the operation or maintenance of electric, gas or
          water utility facilities; coal, ore, gas, oil and other minerals
          and timber; electric energy, gas (natural or artificial), steam,
          water and other products generated, produced, manufactured,
          purchased or otherwise acquired by TEP; real property, gas wells,
          pipe lines, and other facilities used primarily for the
          production or gathering of natural gas; all property  which is
          the subject of a lease agreement designating TEP as lessee and
          TEP's interest in such property and such lease agreement, whether
          or not such lease agreement is intended as security.
    

             "Lien" means any mortgage, deed of trust, pledge, security
          interest, conditional sale or other title retention agreement or
          any lease in the nature thereof.

             "Permitted Secured Debt" means, as of any particular time,

                 (a)  Secured Debt which matures less than one year from
             the date of the issuance or incurrence thereof and is not
             extendible at the option of the issuer; and any refundings,
             refinancings and/or replacements of any such Secured Debt by
             or with similar Secured Debt;

   
                 (b)  Secured Debt secured by Purchase Money Liens or any
             other Liens existing or placed upon property at the time of,
                 or within one hundred eighty (180) days after, the

                                       25
<PAGE>

   
             acquisition thereof by TEP, and any refundings, refinancings
             and/or replacements of any such Secured Debt; provided,
             however, that no such Purchase Money Lien or other Lien shall
             extend to or cover any property of TEP other than (i) the
             property so acquired and improvements, extensions and
             additions to such property and renewals, replacements and
             substitutions of or for such property or any part or parts
             thereof and (ii) with respect to Purchase Money Liens, other
             property subsequently acquired by TEP;
    

   
                 (c)  Secured Debt relating to governmental obligations
             the interest on which is not included in gross income for
             purposes of federal income taxation pursuant to Section 103
             of the Internal Revenue Code of 1986, as amended (or any
             successor provision of law), for the purpose of financing or
             refinancing, in whole or in part, costs of acquisition or
             construction of property to be used by TEP, to the extent
             that the Lien which secures such Secured Debt is required
             either by applicable law or by the issuer of such
             governmental obligations or is otherwise necessary in order
             to establish or maintain such exclusion from gross income;
             and any refundings, refinancings and/or replacements of any
             such Secured Debt by or with similar Secured Debt;
    

   
                 (d)  Secured Debt (i) which is related to the
             construction or acquisition of property not previously owned
             by TEP or (ii) which is related to the financing of a project
             involving the development or expansion of property of TEP and
             (iii) in either case, the obligee in respect of which has no
             recourse to TEP or any property of TEP other than the
             property constructed or acquired with the proceeds of such
             transaction or the project financed with the proceeds of such
             transaction (or the proceeds of such property or such
             project); and any refundings, refinancings and/or
             replacements of any such Secured Debt by or with Secured Debt
             described in clause (iii) above;
    

                 (e)  Secured Debt permitted as described in the first
             paragraph under this heading; and

   
                 (f)  in addition to the Permitted Secured Debt described
             in clauses (a) through (e) above, Secured Debt not otherwise
             so permitted in an aggregate principal amount not exceeding
             10% of the Consolidated Tangible Net Worth (as defined in the
             Indenture, which term, as so defined, includes utility
             regulatory assets) of TEP and its consolidated subsidiaries,
             as shown on the latest balance sheet of TEP and its
             consolidated subsidiaries, audited by independent certified
             public accountants, dated prior to the date of the creation,
             issuance, incurrence or  assumption of such Secured Debt.
    

   
             "Purchase Money Lien" means, with respect to any property
          being acquired by TEP, a Lien on such property which
    

                 (a)  is taken or retained by the transferor of such
             property to secure all or part of the purchase price thereof;

                 (b)  is granted to one or more Persons other than the
             transferor which, by making advances or incurring an
             obligation, give value to enable the grantor of such Lien to
             acquire rights in or the use of such property;

                 (c)  is held by a trustee or agent for the benefit of one
             or more Persons described in clause (a) or (b) above,
             provided that such Lien may be held, in addition, for the
             benefit of one or more other Persons which shall have
             theretofore given, or may thereafter give, value to or for
             the benefit or account of the grantor of such Lien for one or
             more other purposes; or


                                    26
<PAGE>

                 (d)  otherwise constitutes a purchase money mortgage or a
             purchase money security interest under applicable law;

          and, without limiting the generality of the foregoing, for
          purposes of the Indenture, the term Purchase Money Lien will be
          deemed to include any Lien described above whether or not such
          Lien

                 (x)  shall permit the issuance or other incurrence of
             additional indebtedness secured by such Lien on such
             property,

                 (y)  shall permit the subjection to such Lien of
             additional property and the issuance or other incurrence of
             additional indebtedness on the basis thereof and/or

                 (z)  shall have been granted prior to the acquisition of
             such property, shall attach to or otherwise cover property
             other than the property being acquired and/or shall secure
             obligations issued prior and/or subsequent to the issuance of
             the obligations delivered in connection with such
             acquisition.

   
             "Secured Debt", with respect to any Person, means Debt
          created, issued, incurred or assumed by such Person which is
          secured by a Lien upon any property (other than Excepted
          Property) of TEP, real, personal or mixed, of whatever kind or
          nature and wherever located, whether owned at the date of the
          initial authentication and delivery of the Indenture Securities
          or thereafter acquired.
          (See Sec. 508.)
    


          MODIFICATION OF INDENTURE

   
             Modifications Without Consent
    

   
             Without the consent of any Holders of Indenture Securities,
          TEP and the Trustee may enter into one or more supplemental
          indentures for any of the following purposes:
    

   
                 (a)  to evidence the succession of another Person to TEP
             and the assumption by any such successor of the covenants of
             TEP in the Indenture and in the Indenture Securities; or
    

   
                 (b)  to add one or more covenants of TEP or other
             provisions for the benefit of all Holders of Indenture
             Securities or for the benefit of the Holders of, or to remain
             in effect only so long as there shall be Outstanding,
             Indenture Securities of one or more specified series, or one
             or more Tranches thereof, or to surrender any right or power
             conferred upon TEP by the Indenture; or
    

                 (c)  to change or eliminate any provision of the
             Indenture or to add any new provision to the Indenture,
             provided that if such change, elimination or addition
             adversely affects the interests of the Holders of the
             Indenture Securities of any series or Tranche in any material
             respect, such change, elimination or addition will become
             effective with respect to such series or Tranche only when no
             Indenture Security of such series or Tranche remains
             Outstanding; or

                 (d)  to provide additional collateral security for the
             Indenture Securities; or


                                    27
<PAGE>

                 (e)  to establish the form or terms of the Indenture
             Securities of any series or Tranche as permitted by the
             Indenture; or

                 (f)  to provide for the authentication and delivery of
             bearer securities and coupons appertaining thereto
             representing interest, if any, thereon and for the procedures
             for the registration, exchange and replacement thereof and
             for the giving of notice to, and the solicitation of the vote
             or consent of, the holders thereof, and for any and all other
             matters incidental thereto; or

                 (g)  to evidence and provide for the acceptance of
             appointment by a successor trustee, co-trustee or separate
             trustee; or

                 (h)  to provide for the procedures required to permit the
             utilization of a non-certificated system of registration for
             all, or any series or Tranche of, the Indenture Securities;
             or

   
                 (i)  to change any place or places where (1) the
             principal of and premium, if any, and interest, if any, on
             all or any series of Indenture Securities, or any Tranche
             thereof, will be payable, (2) all or any series of Indenture
             Securities, or any Tranche thereof, may be surrendered for
             registration of transfer, (3) all or any series of Indenture
             Securities, or any Tranche thereof, may be surrendered for
             exchange and (4) notices and demands to or upon TEP in
             respect of all or any series of Indenture Securities, or any
             Tranche thereof, and the Indenture may be served; or
    

                 (j)  to cure any ambiguity, to correct or supplement any
             provision therein which may be defective or inconsistent with
             any other provision therein, or to make any other changes to
             the provisions thereof or to add other provisions with
             respect to matters and questions arising under the Indenture,
             so long as such other changes or additions do not adversely
             affect the interests of the Holders of Indenture Securities
             of any series or Tranche in any material respect.
             (See Sec. 1101.)

   
             Without limiting the generality of the foregoing, if the
          Trust Indenture Act is amended after the date of the Original
          Indenture in such a way as to require changes to the Indenture or
          the incorporation therein of additional provisions or so as to
          permit changes to, or the elimination of, provisions which, at
          the date of the Original Indenture or at any time thereafter,
          were required by the Trust Indenture Act to be contained in the
          Indenture, the Indenture will be deemed to have been amended so
          as to conform to such amendment or to effect such changes or
          elimination, and TEP and the Trustee may, without the consent of
          any Holders of Indenture Securities, enter into one or more
          supplemental indentures to evidence or effect such amendment.
    

   
             Modifications Requiring Consent
    

             Except as provided above, the consent of the Holders of a
          majority in aggregate principal amount of the Indenture
          Securities of all series then Outstanding, considered as one
          class, is required for the purpose of adding any provisions to,
          or changing in any manner, or eliminating any of the provisions
          of, the Indenture pursuant to one or more supplemental
          indentures; provided, however, that if less than all of the
          series of Indenture Securities Outstanding are directly affected
          by a proposed supplemental indenture, then the consent only of
          the Holders of a majority in aggregate principal amount of
          Outstanding Indenture Securities of all series so directly
          affected, considered as one class, will be required; and
          provided, further, that if the Indenture Securities of any series

                                     28
<PAGE>

          have been issued in more than one Tranche and if the proposed
          supplemental indenture directly affects the rights of the Holders
          of one or more, but less than all, of such Tranches, then the
          consent only of the Holders of a majority in aggregate principal
          amount of the Outstanding Indenture Securities of all Tranches so
          directly affected, considered as one class, will be required; and
          provided, further, that no such supplemental indenture may

                 (a)  change the Stated Maturity of the principal of, or
             any installment of principal of or interest on, any Indenture
             Security other than pursuant to the terms thereof, or reduce
             the principal amount thereof or the rate of interest thereon
             (or the amount of any installment of interest thereon) or
             change the method of calculating such rate or reduce any
             premium payable upon the redemption thereof, or reduce the
             amount of the principal of any Discount Security that would
             be due and payable upon a declaration of acceleration of
             Maturity or change the coin or currency (or other property)
             in which any Indenture Security or any premium or the
             interest thereon is payable, or impair the right to institute
             suit for the enforcement of any such payment on or after the
             Stated Maturity of any Indenture Security (or, in the case of
             redemption, on or after the redemption date) without, in any
             such case, the consent of the Holder of such Indenture
             Security,

                 (b)  permit the creation of any Lien ranking prior to the
             Lien of the Indenture with respect to any Class A Bond, or
             (except in accordance with the Indenture) terminate the Lien
             of the Indenture or any Class A Bond or deprive the Holders
             of the benefit of the Lien of the Indenture on any Class A
             Bond without, in any such case the consent of the Holders of
             all Indenture Securities then Outstanding,

                 (c)  reduce the percentage in principal amount of the
             Outstanding Indenture Securities of any series, or any
             Tranche thereof, the consent of the Holders of which is
             required for any such supplemental indenture, or the consent
             of the Holders of which is required for any waiver of
             compliance with any provision of the Indenture or of any
             default thereunder and its consequences, or reduce the
             requirements for quorum or voting, without, in any such case,
             the consent of the Holder of each Outstanding Indenture
             Security of such series or Tranche, or

                 (d)  modify certain of the provisions of the Indenture
             relating to supplemental indentures, waivers of certain
             covenants and waivers of past defaults with respect to the
             Indenture Securities of any series, or any Tranche thereof,
             without the consent of the Holder of each Outstanding
             Indenture Security of such series or Tranche.

             A supplemental indenture which changes or eliminates any
          covenant or other provision of the Indenture which has expressly
          been included solely for the benefit of the Holders of, or which
          is to remain in effect only so long as there shall be
          Outstanding, Indenture Securities of one or more specified
          series, or one or more Tranches thereof, or modifies the rights
          of the Holders of Indenture Securities of such series or Tranches
          with respect to such covenant or other provision, will be deemed
          not to affect the rights under the Indenture of the Holders of
          the Indenture Securities of any other series or Tranche.

             If the supplemental indenture or other document establishing
          any series or Tranche of Indenture Securities so provides the
          Holders of such Indenture Securities will be deemed to have
          consented, by virtue of their purchase of such Indenture
          Securities, to a supplemental indenture containing the additions,
          changes or eliminations to or from the Indenture which are
          specified in such supplemental indenture or other document, no
          Act of such Holders will be required to evidence such consent and


                                     29
<PAGE>


          such consent may be counted in the determination of whether the
          Holders of the requisite principal amount of Indenture Securities
          have consented to such supplemental indenture.  (See Sec. 1102.)

          EVENTS OF DEFAULT
   
             Any of the following events will constitute an "Event of
          Default" under the Indenture:
    

   
                 (a)  failure to pay interest on any Indenture Security
             within 60 days after the same becomes due if such failure
             shall occur prior to the Collateral Release Date, or within a
             period of 30 days after the same becomes due if such failure
             shall occur on or after the Collateral Release Date;
             provided, however, that no such failure shall constitute an
             Event of Default if TEP shall have made a valid extension of
             the interest payment period with respect to the Indenture
             Securities of the series of which such Indenture Security is
             a part, if so provided with respect to such series; or
    

   
                 (b)  failure to pay principal of or premium, if any, on
             any Indenture Security when due; provided, however, that no
             such failure shall constitute an Event of Default if TEP
             shall have made a valid extension of the maturity of
             Indenture Securities of the series of which such Indenture
             Security is a part, if so provided with respect to such
             series; or
    

   
                 (c)  failure to perform, or breach of, any covenant or
             warranty of TEP contained in the Indenture for 90 days after
             written notice to TEP from the Trustee or to TEP and the
             Trustee by the Holders of at least 25% in principal amount of
             the Indenture Securities then Outstanding as provided in the
             Indenture unless the Trustee, or the Trustee and the Holders
             of a principal amount of Indenture Securities not less than
             the principal amount of Indenture Securities the Holders of
             which gave such notice, as the case may be, agree in writing
             to an extension of such period prior to its expiration;
    

   
             provided, however, that the Trustee, or the Trustee and the
             Holders of such principal amount of Indenture Securities, as
             the case may be, will be deemed to have agreed to an
             extension of such period if corrective action is initiated by
             TEP within such period and is being diligently pursued; or
    

   
                 (d)  default under any bond, debenture, note or other
             evidence of Debt of TEP or under any mortgage, indenture, or
             other instrument to secure or evidence any Debt of TEP, which
             default (1) shall constitute a failure to make any payment in
             excess of $5,000,000 of the principal of, or interest on,
             such Debt or (2) shall have resulted in such Debt in an
             amount in excess of $10,000,000 becoming or being declared
             due and payable prior to the date it would otherwise have
             become due and payable, without such payment having been
             made, such Debt having been discharged, or such acceleration
             having been rescinded or annulled, within a period of 90 days
             after written notice to TEP by the Trustee or to TEP and the
             Trustee by the Holders of at least 25% in principal amount of
             the Indenture Securities then Outstanding, as provided in the
             Indenture; it being understood, however, that no event
             described in this clause (d) will constitute an "Event of
             Default" prior to the Collateral Release Date; or
    

   
                 (e)  certain events in bankruptcy, insolvency or
             reorganization of TEP.
    

                 (f)  so long as the Trustee holds any Outstanding Class A
             Bonds which were delivered to the Trustee as the basis for
             the authentication and delivery of Indenture Securities which
             remain outstanding, the occurrence of a matured event of
             default under the Class A Mortgage under which such Class A


                                     30
<PAGE>

             Bonds were delivered (other than any such matured event of
             default which is of similar kind or character to the Event of
             Default described in (c) above and which has not resulted in
             the acceleration of the Class A Bonds Outstanding under such
             Class A Mortgage); provided that the waiver or cure of any
             such event of default and the rescission and annulment of the
             consequences thereof shall constitute a cure of the
             corresponding Event of Default under the Indenture and a
             rescission and annulment of the consequences thereof.  (See
             Sec. 701.)

          REMEDIES

   
             Acceleration of Maturity
    

   
             If an Event of Default occurs and is continuing, then either
          the Trustee or the Holders of not less than 33% in aggregate
          principal amount of the Indenture Securities then Outstanding may
          declare the principal amount (or if any of the Indenture
          Securities are Discount Securities, such portion of the principal
          amount thereof as may be specified in the terms thereof) of all
          of such Indenture Securities, together with premium, if any, and
          accrued interest, if any, thereon, to be due and payable
          immediately by written notice to TEP (and to the Trustee if given
          by the Holders of Indenture Securities).
    

             At any time after such a declaration of acceleration of the
          Maturity of the Indenture Securities then Outstanding, but before
          a judgment or decree for payment of the money due has been
          obtained, such declaration and its consequences will, without
          further act, be deemed to have been rescinded and annulled, if

   
                 (a)  TEP has paid or deposited with the Trustee a sum
             sufficient to pay
    

                    (1)  all overdue interest, if any, on all Indenture
                    Securities then Outstanding;

                    (2)  the principal of and premium, if any, on any
                    Indenture Securities then Outstanding which have become
                    due otherwise than by such declaration of acceleration
                    and interest, if any, thereon at the rate or rates
                    prescribed therefor in such Indenture Securities;

                    (3)  interest, if any, upon overdue interest, if any,
                    at the rate or rates prescribed therefor in such
                    Indenture Securities, to the extent that payment of
                    such interest is lawful; and

                    (4)  all amounts due to the Trustee under the
                    Indenture; and
   
                 (b)  all Events of Default with respect to Indenture
             Securities of such series, other than the non-payment of the
             principal of the Indenture Securities of such series which
             has become due solely by such declaration of acceleration,
             have been cured or waived as provided in the Indenture.  (See
             Sec. 702.)

   
             Right to Direct Proceedings
    

             If an Event of Default occurs and is continuing, the Holders
          of a majority in principal amount of the Outstanding Indenture
          Securities will have the right to direct the time, method and
          place of conducting any proceedings for any remedy available to
          the Trustee or exercising any trust or power conferred on the
          Trustee; provided, however, that (a) such direction does not


                                     31
<PAGE>

          conflict with any rule of law or with the Indenture, and could
          not involve the Trustee in personal liability in circumstances
          where indemnity would not, in the Trustee's sole discretion, be
          adequate and (b) the Trustee may take any other action deemed
          proper by the Trustee which is not inconsistent with such
          direction.  (See Sec. 712.)

   
             Limitation on Right to Institute Proceedings
    

   
             No Holder of any Indenture Security will have any right to
          institute any proceeding, judicial or otherwise, with respect to
          the Indenture or for the appointment of a receiver or for any
          other remedy thereunder unless:
    

                 (a)  such Holder has previously given to the Trustee
             written notice of a continuing Event of Default;

                 (b)  the Holders of a majority in aggregate principal
             amount of the Outstanding Indenture Securities have made
             written request to the Trustee to institute proceedings in
             respect of such Event of Default and have offered the Trustee
             reasonable indemnity against costs and liabilities to be
             incurred in complying with such request; and

                 (c)  for 60 days after receipt of such notice, the
             Trustee has failed to institute any such proceeding and no
             direction inconsistent with such request has been given to
             the Trustee during such 60 day period by the Holders of a
             majority in aggregate principal amount of Indenture
             Securities then Outstanding.

             Furthermore, no Holder of any Indenture Securities will be
          entitled to institute any such action if and to the extent that
          such action would disturb or prejudice the rights of any other
          Holders of Indenture Securities.

   
             No Impairment of Right to Receive Payment
    

             Notwithstanding that the right of a Holder to institute a
          proceeding with respect to the Indenture is subject to certain
          conditions precedent, each Holder of an Indenture Security will
          have the right, which is absolute and unconditional, to receive
          payment of the principal of and premium, if any, and interest, if
          any, on such Indenture Security when due and to institute suit
          for the enforcement of any such payment, and such rights may not
          be impaired or affected without the consent of such Holder.

   
             Notice of Default
    

   
            The Trustee is required to give the Holders notice of any
          default under the Indenture to the extent required by the Trust
          Indenture Act, unless such default shall have been cured or
          waived, except that no such notice to Holders of a default of the
          character described in clause (c) under " -- Events of Default" on
          page 29 may be given until at least 75 days after the occurrence
          thereof.  For purposes of the preceding sentence, the term
          "default" means any event which is, or after notice or lapse of
          time, or both, would become, an Event of Default.  The Trust
          Indenture Act currently permits the Trustee to withhold notices
          of default (except for certain payment defaults) if the Trustee
          in,good faith determines the withholding of such notice to be in
          the interests of the Holders.  (See Secs. 707, 708 and 802.).
    

                                      32
<PAGE>

   
             Additional Remedies
    

             In addition to every other right and remedy provided in the
          Indenture, the Trustee may exercise any right or remedy available
          to the Trustee in its capacity as owner and holder of Class A
          Bonds which arises as a result of a default or matured event of
          default under Class A Mortgage, whether or not an Event of
          Default under the Indenture has occurred and is continuing.  (See
          Sec. 716.)

   
             Evidence of Compliance
    

   
             TEP is required to file annually with the Trustee a
          certificate as to whether or not TEP is in compliance with all
          the conditions and covenants applicable to it under the
          Indenture.
    

   
          CONSOLIDATION, MERGER, TRANSFER OF ASSETS
    

   
             TEP may not consolidate with or merge into any other Person,
          or convey or otherwise transfer, or lease, all of its properties,
          as or substantially as an entirety, to any Person, unless the
          Person formed by such consolidation or into which TEP is merged
          or the Person which acquires by conveyance or other transfer, or
          which leases (for a term extending beyond the last Stated
          Maturity of the Indenture Securities then Outstanding), all of
          the properties of TEP, as or substantially as an entirety, shall
          be a Person organized and existing under the laws of the United
          States, any State or Territory thereof or the District of
          Columbia or under the laws of Canada or any Province thereof and
          shall expressly assume the due and punctual payment of the
          principal of and premium, if any, and interest, if any, on all
          the Indenture Securities then Outstanding and the performance and
          observance of every covenant and condition of the Indenture to be
          performed or observed by TEP.  In the case of the conveyance or
    

   
          other transfer, or lease, of all of the properties of TEP, as or
          substantially as an entirety, to any Person as contemplated
          above, TEP would be released and discharged from all obligations
          under the Indenture and on all Indenture Securities then
          Outstanding unless TEP elects to waive such release and
          discharge.  Upon any such consolidation or merger or any such
          conveyance, transfer or lease of properties of TEP, the
          successor, transferee or lessee shall succeed to, and be
          substituted for, and may exercise every power and right of, TEP
          under the Indenture.  For purposes of the Indenture, the
          conveyance, other transfer, or lease by TEP of all of its
          facilities (a) for the generation of electric energy, (b) for the
          transmission of electric energy or (c) for the distribution of
          electric energy, in each case considered alone, or all of its
          facilities described in clauses (a) and (b), considered together,
          or all of its facilities described in clauses (b) and (c),
          considered together, shall in no event be deemed to constitute a
          conveyance or other transfer of all the properties of TEP, as or
          substantially as an entirety, unless, immediately following such
          conveyance, transfer or lease, TEP shall own no unleased
          properties in the other such categories of property not so
          conveyed or otherwise transferred or leased.  (See Sec. 1001.)
    

   
             If, at any time after the Collateral Release Date, TEP shall
          convey or otherwise transfer any part of its properties which
          does not constitute the entirety, or substantially the entirety,
          thereof to another Person meeting the requirements set forth in
          the preceding paragraph, and if
    

   
                 (a)  such transferee shall expressly assume the due and
             punctual payment of the principal of and premium, if any, and
             interest, if any, on all Indenture Securities then
             Outstanding and the performance and observance of every
             covenant and condition of the Indenture to be performed or
             observed by TEP, and
    

                                      33
<PAGE>
                 (b)  there shall be delivered to the Trustee an
             independent expert's certificate (i) describing the property
             so conveyed or transferred and identifying the same as
             facilities for the generation, transmission or distribution
             of electric energy and (ii) stating that the aggregate
             principal amount of the Indenture Securities then Outstanding
             does not exceed 70% of the fair value of such property,

   
          then TEP shall be released and discharged from all obligations
          and covenants under the Indenture and on all Indenture Securities
          then Outstanding unless TEP elects to waive such release and
          discharge.  In such event, the transferee shall succeed to, and
          be substituted for, and may exercise every right and power of,
          TEP under the Indenture.  (See Sec. 1005.)
    

          SATISFACTION AND DISCHARGE

   
             Any Indenture Securities, or any portion of the principal
          amount thereof, will be deemed to have been paid for purposes of
          the Indenture and, at TEP's election, the entire indebtedness of
          TEP in respect thereof will be deemed to have been satisfied and
          discharged, if there shall have been irrevocably deposited with
          the Trustee or any Paying Agent (other than TEP), in trust:
    

                 (a)  money in an amount which will be sufficient, or

                 (b)  in the case of a deposit made prior to the maturity
             of such Indenture Securities, Eligible Obligations, which do
             not contain provisions permitting the redemption or other
             prepayment thereof at the option of the issuer thereof, the
             principal of and the interest on which when due, without any
             regard to reinvestment thereof, will provide moneys which,
             together with the money, if any, deposited with or held by
             the Trustee or such Paying Agent, will be sufficient, or

                 (c)  a combination of (a) and (b) which will be
             sufficient, to pay when due the principal of and premium, if
             any, and interest, if any, due and to become due on such
             Indenture Securities.  For this purpose, Eligible Obligations
             include direct obligations of, or obligations unconditionally
             guaranteed by, the United States entitled to the benefit of
             the full faith and credit thereof and certificates,
             depositary receipts or other instruments which evidence a
             direct ownership interest in such obligations or in any
             specific interest or principal payments due in respect
             thereof and such other obligations or instruments as shall be
             specified with respect to the Indenture Securities of any
             particular series.  (See Sec. 601.)

   
             The Indenture will be deemed to have been satisfied and
          discharged when no Indenture Securities remain Outstanding
          thereunder and TEP has paid or caused to be paid all other sums
          payable by TEP under the Indenture.  (See Sec. 602.)
    

   
          DUTIES OF TRUSTEE; RESIGNATION; REMOVAL
    

             The Trustee will have, and will be subject to, all the duties
          and responsibilities specified with respect to an indenture
          trustee under the Trust Indenture Act.  Subject to such
          provisions, the Trustee will be under no obligation to exercise
          any of the powers vested in it by the Indenture at the request of
          any Holder of Indenture Securities, unless offered reasonable
          indemnity by such holder against the costs, expenses and
          liabilities which might be incurred thereby.  The Trustee will
          not be required to expend or risk its own funds or otherwise
          incur personal financial liability in the performance of its
          duties if the Trustee reasonably believes that repayment or
          adequate indemnity is not reasonably assured to it.  (See Secs.
          801 and 803.)

   
             The Trustee may resign at any time by giving written notice
          thereof to TEP or may be removed at any time by Act of the
          Holders of a majority in principal amount of the Indenture
          Securities then outstanding delivered to the Trustee and TEP.  No
          resignation or removal of the Trustee and no appointment of a
    
                                   34
<PAGE>



   
          successor trustee will become effective until the acceptance of
          appointment by a successor trustee in accordance with the
          requirements of the Indenture.  So long as no Event of Default or
          event which, after notice or lapse of time, or both, would become
          an Event of Default has occurred and is continuing, if TEP has
          delivered to the Trustee an instrument appointing a successor
          trustee and such successor has accepted such appointment in
          accordance with the terms of the Indenture, the Trustee will be
          deemed to have resigned and the successor will be deemed to have
          been appointed as trustee in accordance with the Indenture.  (See
          Sec. 810.)
    

          EVIDENCE TO BE FURNISHED TO THE TRUSTEE

   
             Compliance with the Indenture provisions is evidenced by
          written statements of officers of TEP or persons selected or paid
          by TEP.  In certain cases, opinions of counsel and certifications
          of an engineer, appraiser or other expert (who in some cases must
          be independent) must be furnished.  In addition, the Indenture
          requires that TEP give the Trustee, not less than annually, a
          brief statement as to TEP's compliance with the conditions and
          covenants under the Indenture.  (See Sec. 507.)
    

          GOVERNING LAW

             The Indenture and the Indenture Securities will be governed
          by and construed in accordance with the laws of the State of New
          York, except to the extent that the Trust Indenture Act shall be
          applicable.  (See Sec. 112.)


                           DESCRIPTION OF THE 1941 MORTGAGE

          GENERAL

   
             TEP may issue Class A Bonds under the Indenture, dated as of
          April 1, 1941 (the "Original 1941 Mortgage"), between TEP and The
          Chase Manhattan Bank, as trustee (the "1941 Mortgage Trustee"),
    

   
          the Original 1941 Mortgage, as amended and supplemented from time
          to time, being hereinafter referred to as the "1941 Mortgage". 
          The terms of such Class A Bonds will include those stated therein
          and in the 1941 Mortgage and those made part of the 1941 Mortgage
          by the Trust Indenture Act.  The following summary of certain
          terms of the 1941 Mortgage is not complete and is subject in all
          respects to the provisions of, and is qualified in its entirety
          by reference to, the 1941 Mortgage and the Trust Indenture Act. 
          TEP has filed the 1941 Mortgage and all supplemental indentures
          as exhibits to the registration statement of which this
          prospectus is a part.  Capitalized terms used under this heading
          which are not otherwise defined in this prospectus have the
          meanings set forth in the 1941 Mortgage.  Whenever particular
          provisions or defined terms in the 1941 Mortgage are referred to,
          such provisions or defined terms are incorporated by reference
          herein.
    

   
             The 1941 Mortgage provides for the issuance thereunder of
          multiple series of bonds, as discussed below under "Issuance of
          Additional 1941 Mortgage Bonds" on page 36.  All bonds issued
          under the 1941 Mortgage are collectively referred to herein as
          the "1941 Mortgage Bonds".
    

   
             At the date of this prospectus, approximately $305 million in
          aggregate principal amount of 1941 Mortgage Bonds are
          Outstanding.  TEP's Credit Agreement, referred to under
          DESCRIPTION OF THE 1992 MORTGAGE - "General" on page 47, limits
          the aggregate principal amount of 1941 Mortgage Bonds which may
          be Outstanding under the 1941 Mortgage at any time to
          approximately $411 million.
    

                                      35
<PAGE>

          SECURITY

             General

   
             The 1941 Mortgage constitutes a lien on substantially all the
          real property and tangible personal property of TEP, other than
          property excepted from the lien thereof and such property as may
          have been released from the lien thereof in accordance with the
          terms thereof, subject to no liens prior to the lien of the 1941
          Mortgage other than Permitted Encumbrances and certain other
          liens permitted to exist.
    

             The 1941 Mortgage provides that after-acquired property
          (other than excepted property) will be subject to the lien of the
          1941 Mortgage except as otherwise set forth under "Consolidation,
          Merger, Etc."  In addition, after-acquired property may be
          subject to liens existing or placed thereon at the time of
          acquisition thereof, including, but not limited to, purchase
          money liens and, in certain circumstances, to liens attaching to
          such property prior to the recording and/or filing of an
          instrument specifically subjecting such property to the lien of
          the 1941 Mortgage.

             Excepted Property

   
             The 1941 Mortgage does not cover, among other things:
    

   
                 (a)  bills, notes and accounts receivable, cash, choses
             in action, operating agreements and leases in which TEP is
             the lessor;
    

                 (b)  shares of stock, bonds and other securities (except
             those specifically subjected to such lien or required to be
             pledged);

   
                 (c)  goods and merchandise acquired for the purpose of
             sale in the ordinary course of business; and fuel, materials,
             supplies and other personal property which are consumable in
             their use in the operation of, or are not in use in
             connection with or connected as fixtures to, the plants and
             systems of TEP;
    

   
                 (d)  TEP's franchise to be a corporation; and (e) other
             property excepted as described under "Consolidation, Merger,
             Transfer of Assets" on page 38. (See Granting Clauses.)
    

   
             Properties held by subsidiaries of TEP, as well as properties
          leased from other Persons, are not subject to the lien of the
          1941 Mortgage.
    

             Permitted Encumbrances

   
             For purposes of the 1941 Mortgage, Permitted Encumbrances and
          such other liens include, without limitation:
    

                 (a)  liens for taxes or governmental charges which are
             not delinquent;

                 (b)  liens for taxes or governmental charges which are
             being contested in good faith and by appropriate proceedings;

   
                 (c)  liens, securing obligations neither assumed nor paid
             by TEP, on real estate acquired for transmission or
             distribution purposes;
    

   
                 (d)  easements or reservations in property of TEP for
             roads, railroads, telephone lines, pipelines, gas
             transportation lines, transmission lines and other like
             purposes, water rights, building and use restrictions, and
    

                                      36
<PAGE>

    
             defects in title to, and leases of, minor parts or the trust
             estate which do not in the opinion of counsel materially
             impair the use of the affected property in the Utility
             Business;
    

                 (e)  undetermined liens and charges incidental to current
             construction or current operation;

                 (f)  duties or contractual obligations to any
             municipality or public authority;

                 (g)  defects in title to rights-of-way for transmission
             or distribution lines which, in the opinion of counsel, do
             not materially impair the operation of the Utility Business;
             or may be remedied without undue burden or expense;

   
                 (h)  rights reserved to or vested in any municipality or
             public authority to terminate any right, power, franchise,
             grant, license, or permit, or to purchase or recapture or
             designate a purchaser of any property of TEP;
    

                 (i)  leases existing at April 1, 1941 and renewals
             thereof; and

   
                 (j)  rights granted or created or burdens assumed by TEP
             under joint use and similar agreements or under any law or
             governmental regulation or permit relating to TEP's occupancy
             of or interference with public lands, rivers, streams,
             navigable waters, bridges or highways.(See Art. I, Sec. 3.)
    

             Trustee's Lien

   
             The 1941 Mortgage Trustee will have a lien, prior to the lien
          on behalf of the holders of 1941 Mortgage Bonds, upon the
          Mortgaged Property for the payment of its reasonable compensation
          and expenses and for indemnity against certain liabilities.  (See
          Art. XII, Sec. 8.).
    

          ISSUANCE OF ADDITIONAL 1941 MORTGAGE BONDS

             General

             The aggregate principal amount of 1941 Mortgage Bonds which
          may be authenticated and delivered under the 1941 Mortgage is
          effectively unlimited.  1941 Mortgage Bonds of any series may be
          issued from time to time on the basis of, and in an aggregate
          principal amount not exceeding:

       
                 (a)  60% of the Cost or fair value to TEP (whichever is
             less) of Net Property Additions (as described below) which do
             not constitute Funded Property;
    

                 (b)  the aggregate principal amount of Retired Bonds; and

                 (c)  an amount of cash deposited with the 1941 Mortgage
             Trustee.

          (See Art. III.)

   
             Property Additions generally include any property which is
          properly chargeable to the utility plant accounts of TEP and is
          used or useful or to be used in the Utility Business.  Net
          Property Additions means, generally, Property Additions (not
          theretofore funded by use as the basis for the authentication and
          delivery of 1941 Mortgage Bonds, the withdrawal of cash or the
          release of Funded Property) after deducting the amount of
          Property Retirements not previously deducted (net of cash,
    
                                     37
<PAGE>


   
          obligations and other property delivered to the 1941 Mortgage
          Trustee in connection with such Property Retirements).  (See Art.
          I, Sec. 4.)
    

             Retired Bonds means 1941 Mortgage Bonds which have been
          retired (but not by use of certain cash proceeds including
          proceeds of the release of or insurance on Funded Property) and
          have not theretofore been used for any purpose under the 1941
          Mortgage.

             Net Earnings Test

   
             In general, the issuance of 1941 Mortgage Bonds is subject to
          the delivery to the 1941 Mortgage Trustee of a Net Earnings
          Certificate showing net earnings of TEP for 12 consecutive months
          within the preceding 15 months to be at least two times the
          annual interest requirements on all 1941 Mortgage Bonds at the
          time Outstanding (except any to be retired in connection with the
          new issue), new 1941 Mortgage Bonds then applied for and all
          other indebtedness (with certain exceptions) secured by a lien
          prior to the lien of the 1941 Mortgage.  Net earnings are
          calculated before, among other things, provisions for income
          taxes.  The calculation of net earnings also does not take into
          account profits or losses from the sale or disposal of capital
          assets or securities, and, for purposes of the Net Earnings
          Certificate, not more than 15% of net earnings may consist of net
          nonoperating income and/or net operating revenue from sources
          other than the Utility Business.  (See Art. I, Sec. 5 and Art.
          III, Sec. 5.)
    

   
             TEP is not required to deliver a Net Earnings Certificate
          prior to issuance of 1941 Mortgage Bonds on the basis of Retired
          Bonds unless
    

   
                 (a)  (1)  the new 1941 Mortgage Bonds are issued within
             one year after the issuance of, or more than two years prior
             to the stated maturity of, the Retired Bonds and (2)  the new
             1941 Mortgage Bonds bear a greater rate of interest than such
             Retired Bonds or
    

                 (b)  the new 1941 Mortgage Bonds are issued in respect
             of Retired Bonds the interest charges on which have been
             excluded from any Net Earnings Certificate filed with the
             1941 Mortgage Trustee since the retirement of such 1941
             Mortgage Bonds.

             1941 Mortgage Bonds Issuable

   
             As of September 30, 1998, there was no material amount of Net
          Property Additions available to be used as the basis for the
          authentication and delivery of 1941 Mortgage Bonds; and as of
          September 30, 1998, the amount of Retired Bonds was $445 million. 
          Such Retired Bonds would permit, and the net earnings test would
          not prohibit, the authentication and delivery of $445 million in
          aggregate principal amount of 1941 Mortgage Bonds at an assumed
          interest rate of 7.5% per annum.
    

             Net Property Additions and Retired Bonds may also be made the
          basis of the withdrawal of cash deposited in connection with the
          release of property from the lien of the 1941 Mortgage, as
          discussed in "Withdrawal of Cash".

          RELEASE OF PROPERTY

   
             Unless a Default has happened and is continuing, TEP may
          obtain the release from the lien of the 1941 Mortgage of any
          property (except for cash, obligations or other personal property
          held by the 1941 Mortgage Trustee) upon delivery to the 1941
          Mortgage Trustee of, among other things, cash and purchase money
          obligations having an aggregate fair value at least equal to the
          fair value of the property to be released; provided, however,
          that the aggregate principal amount of such purchase money
          obligations will not exceed 66 2/3% of the fair value of such
          property; and provided, further, that the aggregate principal
          amount of purchase money obligations and governmental obligations
    
                                      38
<PAGE>

   
          delivered in connection with a taking of TEP property by eminent
          domain at any one time held as part of the Trust Estate, shall
          not exceed 15% of the aggregate principal amount of 1941 Mortgage
          Bonds then Outstanding.  (See Art. VII, Sec. 3.)
    

             The 1941 Mortgage provides simplified procedures for the
          release of minor properties and property taken by eminent domain,
          and provides for dispositions of certain obsolete property and
          grants or surrender of certain rights without any release or
          consent by the 1941 Mortgage Trustee.

          WITHDRAWAL OF CASH

   
             Unless a Default has happened and has not been remedied, all
          or any part of the moneys received by the 1941 Mortgage Trustee
          in consideration of any release, including payments on account of
          purchase money obligations or governmental obligations so
          received, at the election of TEP, shall
    

   
                 (a)  be withdrawn from time to time by TEP (1) in an
             amount equal to 166 2/3% of the principal amount of 1941
             Mortgage Bonds to the authentication and delivery of which
             TEP is entitled on the basis of Net Property Additions and/or
             (2) in an amount equal to the principal amount of 1941
             Mortgage Bonds to the authentication and delivery of which
             TEP is entitled on the basis of Retired Bonds; or
    

   
                 (b)  be applied by the 1941 Mortgage Trustee to the
             purchase or redemption of 1941 Mortgage Bonds, as directed by
             TEP, but subject to the deposit by TEP of certain additional
             moneys to pay premium and accrued interest.  (See Art. VII,
             Secs. 9 and 10.)
    

   
             See "Issuance of Additional 1941 Mortgage Bonds - 1941
          Mortgage Bonds Issuable" on page 37 for information regarding
          available Net Property Additions and Retired Bonds.
    

   
          CONSOLIDATION, MERGER, TRANSFER OF ASSETS
    

   
             Nothing in the 1941 Mortgage prevents any consolidation or
          merger of TEP or of any successor company with or into which it
          has been lawfully consolidated or merged, with or into any
          corporation, or any conveyance, transfer or lease, subject to the
          1941 Mortgage, of the Mortgaged Property as an entirety or
          substantially as an entirety to any corporation lawfully entitled
          to acquire or lease and operate the same; provided, however, that
          any such lease shall be made expressly subject to immediate
          termination by TEP or by the 1941 Mortgage Trustee at any time
          during the continuance of a Default, and also by the purchaser of
          the property so leased at any sale thereof under the 1941
          Mortgage; and provided, further, that upon any such
          consolidation, merger, conveyance or transfer, or upon any such
          lease the term of which extends beyond the date of maturity of
          any of the 1941 Mortgage Bonds then Outstanding, the payment of
          the principal, premium, if any, and interest, if any, on all of
          the 1941 Mortgage Bonds then Outstanding, and the performance of
          all the covenants in the 1941 Mortgage shall be assumed by the
          corporation formed by such consolidation or into which such
          merger shall have been made, or by the lessee under any such
          lease the term of which extends beyond the date of maturity of
          any of the 1941 Mortgage Bonds.  (See Art. XI, Sec. 1.)
    

   
             In case TEP is so consolidated with or merged into any other
          corporation, or shall so convey or transfer, subject to the 1941
          Mortgage, the Mortgaged Property as aforesaid, the 1941 Mortgage
          will not (unless the successor corporation elects otherwise)
          become and be a lien upon any of the properties and franchises of
          the successor corporation owned or acquired at the time of such
          merger, consolidation, conveyance or transfer, or thereafter,
          except those acquired by it from TEP and except, among other
          things:
    

                                      39
<PAGE>

                 (a) betterments, extensions, improvements, additions,
             repairs, renewals, replacements, substitutions and
             alterations to, upon, for and of the Mortgaged Property,

                 (b) property acquired or constructed with the proceeds of
             any insurance on any part of the Mortgaged Property or with
             the proceeds of any part of the Mortgaged Property released
             from the lien of the 1941 Mortgage or taken by the exercise
             of the power of eminent domain, and

                 (c) property acquired to maintain and preserve and keep
             the Mortgaged Property in good condition, repair and working
             order.  (See Art. XI, Sec. 3.)

          MODIFICATION OF 1941 MORTGAGE

   
             Modifications Without Consent
    

   
             Without the consent of any holders of 1941 Mortgage Bonds,
          TEP and the 1941 Mortgage Trustee may enter into one or more
          supplemental indentures for any of the following purposes:
    

   
                 (a)  to correct the description of any property mortgaged
             or pledged or to subject to the lien of the 1941 Mortgage,
             additional property then owned by TEP;
    

                 (b)  to add to the limitations specified in the 1941
             Mortgage on the authorized amount, issue and purposes of
             issue of the 1941 Mortgage Bonds, or of any series thereof,
             other limitations thereafter to be observed;

                 (c)  to provide for creation of any series of 1941
             Mortgage Bonds specifying the form and provisions thereof;

                 (d)  to provide for the creation of a sinking
             amortization, improvement, renewal or other fund for the
             benefit of all or any of the 1941 Mortgage Bonds of any one
             or more series specifying the terms and conditions thereof;

                 (e)  to vary the basic redemption provisions contained in
             the Original 1941 Mortgage, or to fix new provisions, in
             respect of the redemption of 1941 Mortgage Bonds of any
             series;

   
                 (f)  to evidence the succession of another corporation to
             TEP or successive successions, and assumption by a successor
             corporation of the covenants and obligations of TEP under the
             1941 Mortgage;
    

   
                 (g)  to provide for the issue under the 1941 Mortgage, of
             particular series of 1941 Mortgage Bonds convertible, at the
             option of the holders thereof, into other obligations or into
             capital stock of any class of TEP, specifying the terms and
             conditions of such conversion;
    

                 (h)  to add further covenants for the protection of the
             mortgaged premises and of the holders of 1941 Mortgage Bonds,
             and to make the occurrence and continuance of a default in
             any of such additional covenants an event of default
             permitting the enforcement of all or any of the several
             remedies provided in the 1941 Mortgage.

                 (i)  to cure any ambiguity, or correct or supplement any
             inconsistent or defective provision contained in the 1941
             Mortgage;


                                     40
<PAGE>

                 (j)  to make such provision in regard to matters or
             questions arising under the 1941 Mortgage or to add to the
             1941 Mortgage such other provisions as may be necessary of
             desirable and not inconsistent with the 1941 Mortgage;

                 (k)  to give effect to action taken by bondholders at a
             meeting or by consent; and

                 (l)  to alter, amend or add to any and all the provisions
             of the 1941 Mortgage in any particular whatsoever as shall be
             required to qualify the 1941 Mortgage and any supplemental
             indenture under the Trust Indenture Act.

          (See Art. XIII, Sec. 1)

   
             Modifications Requiring Consent
    

   
             Except as provided above, any change or alteration of the
          1941 Mortgage requires the consent of the holders of not less
          than 75% in principal amount of the 1941 Mortgage Bonds then
          Outstanding and of not less than 75% in principal amount of the
          Outstanding 1941 Mortgage Bonds of any one or more series which
          may be affected by any such modification differently from other
          series; except that the bondholders, without the consent of the
          holder of each 1941 Mortgage Bond affected, have no power to:
    

                 (a) extend the maturity of any 1941 Mortgage Bonds,

                 (b) reduce the premium, if any, or the rate of interest
             thereon or otherwise modify the terms of payment of
             principal, premium or interest,

                 (c) permit the creation of any lien ranking prior or on a
             parity with the lien of the 1941 Mortgage with respect to any
             of the Mortgaged Property,

                 (d) deprive any nonassenting bondholder of a lien upon
             the Mortgaged Property for the security of his 1941 Mortgage
             Bonds, or

                 (e) reduce the percentage of bondholders authorized to
             take such action.

   
          TEP has reserved the right to amend the 1941 Mortgage, without
          any consent or other action by holders of the 1941 Mortgage Bonds
          of any series created after July 31, 1976 to reduce the required
          consent of bondholders as described above from 75% to 60%.
    

          (See Art XIV, Sec. 6.)

   
             Modifications Pre-Approved
    

   
             The Trustee, as holder of the Class A Bonds delivered to it
          under the Indenture, and possibly the holders of additional 1941
          Mortgage Bonds issued subsequent to the date of this prospectus,
          will be deemed to have consented to the execution and delivery of
          a supplemental indenture containing one or more, or all, of the
          amendments to the 1941 Mortgage described below:
    

                 (a)  to expand the definition of property additions to
             eliminate geographical restrictions to certain states and
             allow the inclusion of properties located anywhere in the
             United States and in Canada and Mexico, or their coastal
             waters; to include space satellites and stations, solar power
             satellites and other analogous facilities; and to delete the
             requirement that property additions have been acquired or
             constructed within five years;


                                     41
<PAGE>

                 (b)  to remove the requirement that certificates
             delivered to the 1941 Mortgage Trustee be verified;

                 (c)  to eliminate the dividend and redemption
             restriction;

   
                 (d)  (1)  to eliminate the provisions for the 
                      replacement reserve; or, in the alternative
    

   
                      (2)  to change the amount required to be credited to
                      replacement reserve to an amount not less than 10% of
                      TEP's gross operating revenues from the Utility
                      Business (remaining after deducting the cost to TEP of
                      fuel used in the Utility Business and of electricity
                      purchased for resale or exchange) less the amounts
                      expended for maintenance of the property of TEP
                      pertaining to the Utility Business; or, in the
                      alternative
    

   
                      (3)  to change the amount required to be credited to
                      replacement reserve to an amount not less than the
                      lower of (A) (i) 2% of the cost of the depreciable
                      property of TEP subject to the lien of the 1941
                      Mortgage less (ii) the amounts expended for maintenance
                      of the property of TEP pertaining to the Utility
                      Business or (B) 10% of TEP's gross operating revenues
                      from the Utility Business (remaining after deducting
                      the cost to TEP of fuel used in the Utility Business
                      and of electricity purchased for resale or exchange)
                      less the amounts expended for maintenance of the
                      property of TEP pertaining to the Utility Business;
    

   
                 (e)  to change the opinion of counsel required to be
             delivered upon the certification of property additions to
             delete the requirement that TEP have all necessary permission
             from governmental authorities to use and operate such
             property additions;
    

                 (f)  to specifically allow the inclusion of earnings
             collected subject to refund in net earnings for purposes of
             the interest coverage requirement for the issuance of 1941
             Mortgage Bonds;

                 (g)  to specifically permit the debt component, in
             addition to the equity component, of the allowance for funds
             used during construction to be included in net earnings for
             purposes of the interest coverage requirement for the
             issuance of 1941 Mortgage Bonds;


                 (h)  to increase the maximum percentage of net non-
             operating income in relation to total net earnings, in the
             application of the interest coverage test, from 15% to 25%;

   
                 (i)  to change the interest coverage requirement for the
             issuance of 1941 Mortgage Bonds to a requirement that net
             earnings be at least equal to the lower of (1) two (or any
             higher amount) times interest charges on, or (2) 15% (or any
             higher percentage) of the principal amount of, Outstanding
             1941 Mortgage Bonds, including the 1941 Mortgage Bonds
             applied for, and prior lien indebtedness;
    

   
                 (j)  to raise the minimum dollar amount of fire and other
             losses that must be payable to the 1941 Mortgage Trustee from
             $10,000 to 5% (or any lower percentage) of the principal
             amount of Outstanding 1941 Mortgage Bonds; and to
             specifically permit TEP to carry insurance policies with
             deductible provisions equal to 5% (or any lower percentage)
             of the principal amount of Outstanding 1941 Mortgage Bonds or
             any higher deductible amount usually contained in the
             policies of other companies owning and operating similar
             properties;
    

   
                 (k)  to modify the special release provision of the 1941
             Mortgage to increase the amount of the fair value of property
             which may be released from the lien of the 1941 Mortgage
             without compliance with all the conditions of the general
             release provision from $15,000 to the greater of $25,000 or
             1% of the aggregate principal amount of Outstanding 1941
             Mortgage Bonds and to eliminate  the requirement  that a
    

                                    42
<PAGE>

   
             certified resolution of the Board of Directors of TEP be
             delivered to the 1941 Mortgage Trustee in connection with a
             release of property under such provision;
    

   
                 (l)  to qualify the covenant of TEP to "observe and
             conform to all valid requirements of any governmental
             authority relative to any of the mortgaged property" so as
             not to require such observance and conformance so long as TEP
             is doing all things technologically and economically feasible
             toward such observance and compliance;
    

   
                 (m)  to modify the general release provision to allow
             property, the ownership of which (rather than the use of
             which) by TEP is no longer desirable in the judicious
             management and maintenance of the mortgaged property or in
             the conduct of the business of TEP, to be released from the
             lien of the 1941 Mortgage;
    

   
                 (n)  to add a definition of the term "fair value",
             providing, among other things, that "fair value" with respect
             to any property will be determined by reference to (1) the
             amount which would be likely to be obtained in an arm's
             length transaction with respect to such property between an
             informed and willing buyer and an informed and willing
             seller, under no compulsion, respectively, to buy or sell,
             (2) the amount of investment with respect to such property
             which, together with a reasonable return thereon, would be
             likely to be recovered through ordinary business operations
             or otherwise, (3) the cost, accumulated depreciation and
             replacement cost with respect to such property and (4) any
             other relevant factors;
    

   
                 (o)  to add a definition of the term "purchase money
             mortgage" to mean, generally, a lien on the property being
             acquired or disposed of by TEP or being released from the
             lien of the 1941 Mortgage which is retained by the transferor
             of such property or granted to one or more persons in
             connection with the transfer or release thereof, or granted
             to or held by a trustee or agent for any such persons, and
             which would include, among other things, liens which (1)
             permit the incurrence of indebtedness secured thereby in
             addition to indebtedness incurred in connection with the
             transfer of specific property, (2) permit the subjection of
             other property to the lien thereof and/or (3) were granted
             prior to any particular transfer of property, which cover
             other property and/or which secure other obligations issued
             prior or subsequent to the obligations delivered in
             connection with any particular acquisition, disposition or
             release of property; and to add a definition of the term
             "purchase money obligation" to mean an obligation secured by
             a purchase money mortgage;
    

   
                 (p)  to modify the provision described in clause (a)(2)
             in the first paragraph under "Withdrawal of Cash" on page 38
             to refer to 166 2/3%  of the principal amount of 1941
             Mortgage Bonds in lieu of the principal amount thereof;
    

   
                 (q)  to modify the provisions described in the second
             proviso to the first paragraph under "Release of Property"
             (1) to delete such provisions or to provide that the same may
             be disregarded upon specified conditions; or (2) to delete
             from such provisions the limitation of 15%; or (3) to change
             such percentage to any higher percentage not exceeding 100%;
             and/or
    

                 (r)  to eliminate any requirement to deliver a Net
             Earnings Certificate in connection with the authentication
             and delivery of 1941 Mortgage Bonds on the basis of Retired
             Bonds.
             (See Art. IV, Sec.3 of Thirty-Fourth Supplemental Indenture.)

   
             The prospective amendments described in clauses (o), (p) and
          (q) in the preceding paragraph, if adopted, would have the
          effect, among other things, of facilitating transactions which
          would result in a  disaggregation of the generation, transmission
          and/or distribution segments of TEP's business, including
          transfers to other entities whether or not affiliated with TEP. 
          See RISK FACTORS - "TEP Cannot Predict Impact of Retail
    
                                       43
<PAGE>

           
          Competition on Operating Results and Financial Condition" on page
          7 for information regarding the contemplated divestiture by TEP
          of its generation assets.
    


          DEFAULTS

   
             Any of the following events will constitute a "Default" under
          the 1941 Mortgage:
    

   
                 (a)  failure to pay interest on any 1941 Mortgage Bond,
             or to make any sinking fund payment required hereunder in
             respect of 1941 Mortgage Bonds of any series, for a period of
             60 days after the same becomes due; or
    

   
                 (b)  failure to pay principal of or premium, if any, on
             any 1941 Mortgage Bond when due, whether at stated maturity,
             upon redemption or otherwise; or
    

   
                 (c)  failure to perform or observe any other covenant or
             condition required to be performed or observed by TEP (except
             in respect of the refund or reimbursement of taxes,
             assessments or other governmental charges, for which the
             holders of 1941 Mortgage Bonds may look only to TEP), for a
             period of 90 days after written notice to TEP by the 1941
             Mortgage Trustee or to TEP and the 1941 Mortgage Trustee by
             the holders of at least 10% in principal amount of the 1941
             Mortgage Bonds at the time Outstanding; or
    

   
                 (d)  certain events relating to the bankruptcy,
             insolvency or reorganization of TEP or the appointment of a
             receiver or trustee for its property; or
    

                 (e)  so long as the Trustee under the Indenture holds any
             1941 Mortgage Bonds as Class A Bonds under the Indenture, an
             "Event of Default" under the Indenture; provided, however,
             that the waiver or cure of such "Event of Default" under the
             Indenture will constitute a cure of the corresponding Default
             under the 1941 Mortgage and a rescission and annulment of the
             consequences thereof.

          (See Art. VIII, Sec. 1 of Original 1941 Mortgage, and Art. IV,
          Sec. 1 of Thirty-Fourth Supplemental Indenture).

       REMEDIES

   
             Acceleration of Maturity
    

   
             Upon the occurrence of a Default under the 1941 Mortgage, the
          1941 Mortgage Trustee may, and upon the written request of the
          holders of a majority in aggregate principal amount of the 1941
          Mortgage Bonds then Outstanding shall, by notice in writing given
          to TEP, declare the principal of all 1941 Mortgage Bonds then
          Outstanding and the interest accrued thereon, if any, immediately
          due and payable. If, at any time after such declaration, and
          prior to the stated maturity of the latest maturing 1941 Mortgage
          Bonds then Outstanding, and before any judgment or decree for the
          payment of the moneys due shall have been entered, TEP shall:
    

   
                 (a)  pay all arrears of interest upon all 1941 Mortgage
             Bonds then Outstanding, with interest (if and to the extent
             permitted by law) on the overdue installments of interest at
             the respective rates borne by such 1941 Mortgage Bonds,
    

   
                 (b)  pay the reasonable expenses of the 1941 Mortgage
             Trustee and all other sums payable under the 1941 Mortgage
             (except the principal of 1941 Mortgage Bonds so declared to
    

                                       44
<PAGE>

   
             be due and payable, unless such 1941 Mortgage Bonds shall in
             the meantime have matured by their terms, and except interest
             accrued thereon since the last preceding interest payment
             date)
    

   
                 (c) cure all other Defaults, if any, or make adequate
             arrangements therefor,
    

          then in every such case the holders of at least a majority in
          aggregate principal amount of the 1941 Mortgage Bonds then
          Outstanding may waive the Default by reason of which the
          principal of the 1941 Mortgage Bonds shall have so become due and
          payable, and may rescind and annul such declaration and its
          consequences, but no such waiver or rescission or annulment shall
          extend to or affect any subsequent or other then existing Default
          or impair any right or remedy consequent thereon.  (See Art.
          VIII, Sec. 3.)

   
             Possession of Mortgaged Property
    

   
             In case one or more Defaults have happened and have not been
          remedied, TEP, upon demand of the 1941 Mortgage Trustee, will
          forthwith surrender to the 1941 Mortgage Trustee possession of,
          and, to the extent permitted by law, the 1941 Mortgage Trustee,
          may enter and take possession of, the Trust Estate, and may use,
          operate, manage and control the same and conduct the business
          thereof or, with or without entry, may sell the same to the
          highest bidder.  (See Art. VIII, Secs. 4 and 5.)  In case of any
          sale of the Trust Estate or any part thereof, whether made under
          power of sale or by virtue of judicial proceedings, the principal
          of and interest, if any, on all 1941 Mortgage Bonds then
          Outstanding, if not already due, will immediately become due and
          payable.   (See Art. VIII, Sec. 1)
    

   
             Right to Direct Proceedings
    

             The holders of not less than a majority in aggregate
          principal amount of the 1941 Mortgage Bonds at the time
          Outstanding may, during the continuance of a Default,

                 (a)  require the 1941 Mortgage Trustee to take all such
             steps for the protection and enforcement of its rights and
             the rights of the holders of 1941 Mortgage Bonds or to take
             appropriate judicial proceedings as the 1941 Mortgage Trustee
             shall deem most expedient; and

                 (b) direct the time, method, and place of conducting any
             proceeding for any remedy available to the 1941 Mortgage
             Trustee, or exercise any trust or power conferred upon the
             1941 Mortgage Trustee or

                 (c) on behalf of the holders of all the 1941 Mortgage
             Bonds, consent to the waiving of any past Default and its
             consequences except a Default with respect to the payment of
             principal or interest; provided, however, that (x) such
             direction shall not be otherwise than in accordance with law
             or the 1941 Mortgage, and (y) the 1941 Mortgage Trustee may
             decline to follow any such direction which, in its opinion,
             or as it may be advised, would be prejudicial to the holders
             of 1941 Mortgage Bonds not parties thereto.  (See Art. VIII,
             Sec. 6 and 21.)

   
             Limitation on Right to Institute Proceedings
    

   
             No holder of any 1941 Mortgage Bond will have any right to
          institute any proceeding in equity or at law for the collection
          of any sum due from TEP on account of principal, and premium, if
          any, or interest, or for the appointment of a receiver or
          trustee, or for any other remedy, unless:
    

                 (a)  such holder previously has given to the 1941
             Mortgage Trustee written notice of Default and of the
             continuance thereof, and

                                     45
<PAGE>


                 (b)  the holders of not less than a majority in aggregate
             principal amount of the 1941 Mortgage Bonds then Outstanding
             have made written request upon the 1941 Mortgage Trustee to
             institute such proceeding and shall have offered to the 1941
             Mortgage Trustee reasonable indemnity and security against
             the costs, expenses and liabilities to be incurred therein or
             thereby,

                 (c)  the 1941 Mortgage Trustee for 60 days after receipt
             of such notice, request and offer of indemnity has failed to
             institute such proceeding, and

                 (d)  no directions inconsistent with such request have
             been given by other holders;

          it being understood that no one or more holders of 1941 Mortgage
          Bonds will have any right to affect, disturb or prejudice the
          rights of the holders of any other 1941 Mortgage Bonds.  (See
          Art. VIII, Sec. 16.)

   
             No Impairment of Right to Receive Payment
    

             Nothing contained in the 1941 Mortgage will affect or impair
          the right of action, which is absolute and unconditional, of the
          holders of the 1941 Mortgage Bonds to institute suit to enforce
          the payment of the principal thereof and the premium, if any, and
          interest, if any, thereon.  (See Art. VIII, Sec. 16.)

   
             Notice of Default
    

   
             The 1941 Mortgage Trustee is required, within 90 days after
          the occurrence thereof, to give to the bondholders notice of all
          defaults under the 1941 Mortgage (without regard to periods of
          grace or notices) known to the 1941 Mortgage Trustee, unless such
          defaults have been cured or waived, except that no notice of a
          default of the character described in clause (a) or (c) under
          "Defaults", or certain events of the character referred to in
          clause (d), may be given until at least 60 days after the
          occurrence thereof; provided, that, except in the case of a
          default of the character described in clause (a) or (b) under
          "Defaults", the 1941 Mortgage Trustee may withhold such notice if
          the 1941 Mortgage Trustee in good faith determines that the
          withholding of such notice is in the interests of the
          bondholders. (See Art. VIII, Sec. 2.)
    

   
             Indemnification of 1941 Mortgage Trustee
    

             As a condition precedent to certain actions by the 1941
          Mortgage Trustee in the enforcement of the lien of the 1941
          Mortgage and/or the institution of action on the 1941 Mortgage
          Bonds, the 1941 Mortgage Trustee may require reasonable indemnity
          against costs, expenses and liabilities to be incurred therein or
          thereby.  (See Art. VIII, Sec. 16; Art XII, Sec. 8.)

   
             Remedies Limited by State Law
    

             The laws of the States of Arizona and New Mexico, being the
          states in which the Mortgaged Property is located, may limit or
          deny the ability of the 1941 Mortgage Trustee or the bondholders
          to enforce certain rights and remedies provided in the 1941
          Mortgage in accordance with their terms.

          RESIGNATION OR REMOVAL OF 1941 MORTGAGE TRUSTEE

   
             The 1941 Mortgage Trustee may resign at anytime by giving
          written notice thereof to TEP or may be removed at any time by
          the holders of a majority in principal amount of 1941 Mortgage
          Bonds then Outstanding.  (See Art XII, Sec. 14 and 15.)
    

                                      46
<PAGE>

          EVIDENCE TO BE FURNISHED TO 1941 MORTGAGE TRUSTEE

   
             Compliance with the provisions of the 1941 Mortgage is
          evidenced by written statements of officers of TEP or persons
          selected or paid by TEP.  In certain cases, opinions of counsel
          and certification of an engineer, accountant, appraiser or other
          expert (who in some cases must be independent) must be furnished. 
          In addition, the Trust Indenture Act currently requires that TEP
          give the 1941 Mortgage Trustee, not less often than annually, a
          brief statement as to TEP's compliance with the conditions and
          covenants under the 1941 Mortgage.
    

          GOVERNING LAW

             The duties, liabilities, rights, privileges and immunities of
          the 1941 Mortgage Trustee in relation to the holders of the 1941
          Mortgage Bonds are governed by the laws of the State of New York
          except to the extent that the Trust Indenture Act is applicable. 
          (See Art. XII, Sec. 20)


                           DESCRIPTION OF THE 1992 MORTGAGE

          GENERAL

   
             TEP may issue Class A Bonds under the Indenture of Mortgage
          and Deed of Trust, dated as of December 1, 1992 (the "Original
          1992 Mortgage"), between TEP and Bank of Montreal Trust Company,
          as trustee (the "1992 Mortgage Trustee"), the Original 1992
          Mortgage, as amended and supplemented from time to time, being
          hereinafter referred to as the "1992 Mortgage."  The terms of
          such Class A Bonds will include those stated therein and in the
          1992 Mortgage and those made part of the 1992 Mortgage by the
          Trust Indenture Act.  The following summary of certain terms of
          the 1992 Mortgage is not complete and is subject in all respects
          to the provisions of, and is qualified in its entirety by
          reference to, the 1992 Mortgage and the Trust Indenture Act.  TEP
          has filed the 1992 Mortgage and all supplemental indentures as
          exhibits to the registration statement of which this prospectus
          is a part.  Capitalized terms used under this heading which are
          not otherwise defined in this prospectus have the meanings set
          forth in the 1992 Mortgage.  Whenever particular provisions or
          defined terms in the 1992 Mortgage are referred to, such
          provisions or defined terms are incorporated by reference herein.
    

             The 1992 Mortgage provides for the issuance thereunder of
          multiple series of bonds, as discussed below under "Issuance of
          Additional 1992 Mortgage Bonds".  All bonds issued under the 1992
          Mortgage are collectively referred to herein as the "1992
          Mortgage Bonds".

   
             At the date of this prospectus, $441 million in aggregate
          principal amount of 1992 Mortgage Bonds are Outstanding.  All of
          such 1992 Mortgage Bonds were issued and are held as collateral
          security for the obligations of TEP under the Credit Agreement,
          dated as of December 30, 1997 (the "Credit Agreement"), among
          TEP, the lenders party thereto, the issuing banks party thereto,
          the syndication and documentation agents thereunder and Toronto
          Dominion (Texas), Inc., as Administrative Agent.  Letters of
          credit issued pursuant to the Credit Agreement secure $328.6
          million in aggregate principal amount of industrial development
          revenue bonds issued for the benefit of TEP (together with
          amounts in respect of accrued interest thereon).  In addition,
          the Credit Agreement provides for a $100 million revolving credit
          facility under which, at the date of this prospectus, there were
          no borrowings outstanding.
    

          SECURITY

             General

                                      47
<PAGE>

   
             The 1992 Mortgage constitutes a lien on substantially all the
          real property and tangible personal property of TEP, other than
          property excepted from the lien thereof and such property as may
          have been released from the lien thereof in accordance with the
          terms thereof, subject to no liens prior to the lien of the 1992
          Mortgage other than the lien of the 1941 Mortgage, other
          Permitted Encumbrances and certain other liens permitted to
          exist.
    

             The 1992 Mortgage provides that after-acquired property
          (other than excepted property) will be subject to the lien of the
          1992 Mortgage except as otherwise set forth under "Consolidation,
          Merger, Etc."  In addition, after-acquired property may be
          subject to liens existing or placed thereon at the time of
          acquisition thereof, including, but not limited to, purchase
          money liens and, in certain circumstances, to liens attaching to
          such property prior to the recording and/or filing of an
          instrument specifically subjecting such property to the lien of
          the 1992 Mortgage.

             Excepted Property

   
             1992 Mortgage does not cover, among other things:
    

   
                 (a) bills, notes and accounts receivable, cash, choses in
             action, operating agreements and leases in which TEP is the
             lessor;
    

                 (b) shares of stock, bonds and other securities (except
             those specifically subjected to such lien or required to be
             pledged);

   
                 (c)(1) goods and merchandise acquired for the purpose of
             sale in the ordinary course of business; and fuel, materials,
             supplies and other personal property which are consumable in
             their use in the operation of, or are not in use in
             connection with or connected as fixtures to, the plants and
             systems of TEP; (2) automobiles, buses, trucks, tractors,
             trailers and similar vehicles and rolling stock and other
             railroad equipment; and (3) to the extent not properly
             chargeable to the utility plant accounts of TEP, hand tools,
             furniture, and computers, machinery and equipment used
             exclusively for corporate administrative or clerical
             purposes;
    

   
                 (d) TEP's franchise to be a corporation; and (e) other
             property excepted as described under "Consolidation, Merger,
             Transfer of Assets" on page 32.  (See Granting Clauses.)
    

   
             Properties held by subsidiaries of TEP, as well as properties
          leased from other Persons, are not subject to the lien of the
          1992 Mortgage.
    

             Permitted Encumbrances

   
             For purposes of the 1992 Mortgage, Permitted Encumbrances and
          such other liens include, without limitation:
    

                 (a) liens for taxes or governmental charges which are not
             delinquent;

                 (b) liens for taxes or governmental charges which are
             being contested in good faith and by appropriate proceedings,
             and certain liens of mechanics, materialmen and suppliers;

   
                 (c) liens, securing obligations neither assumed nor paid
             by TEP, on real estate acquired for transmission,
             distribution or communications purposes;
    

   
                 (d) easements, leases and other rights of others in
             respect of the Mortgaged Property, and laws and regulations
             affecting, and defects or irregularities in title to, the
             Mortgaged Property; provided, however, that such easements,
    
                                     48
<PAGE>

    
             leases, rights, laws, regulations, defects and irregularities
             (i) to the extent that the same existed at December 15, 1992,
             did not in the aggregate materially impair the use by TEP of
             the Mortgaged Property considered as a whole in the Utility
             Business or (ii) to the extent that the same arose after such
             date, or relate to or affect any part of the Mortgaged
             Property acquired after such date, do not materially impair
             the use by TEP of such part of the Mortgaged Property in the
             Utility Business;
    

                 (e) undetermined liens and charges incidental to current
             construction or current operation;

                 (f) duties or contractual obligations to any municipality
             or public authority;

   
                 (g) defects or irregularities in title to rights-of-way
             or properties held under lease, easement or similar right,
             including without limitation rights-of-way or properties held
             under lease, easement or similar right from Indian Tribes,
             which do not materially impair the use by TEP of the
             Mortgaged Property considered as a whole or which may be
             remedied without undue burden or expense;
    

                 (h) rights reserved to or vested in any municipality or
             public authority to terminate any right, power, franchise,
             grant, license, easement or permit, or to purchase or
             recapture or designate a purchaser of any property, or to
             impose controls, restrictions or obligation upon any
             property;

                 (i) leases existing at December 15, 1992 and renewals
             thereof;

   
                 (j) rights granted or created or burdens assumed by TEP
             under joint use and similar agreements or under any law or
             governmental regulation or permit relating to TEP's occupancy
             of or interference with public lands, rivers, streams,
             navigable waters, bridges or highways;
    

                 (k) laws in respect of judgments or awards being appealed
             which have been stayed pending appeal; and

                 (l) the lien of the 1941 Mortgage and "permitted
             encumbrances" as therein defined.  (See Art. I, Sec. 3.)

             Trustee's Lien

   
             The 1992 Mortgage Trustee will have a lien, prior to the lien
          on behalf of the holders of 1992 Mortgage Bonds, upon the
          Mortgaged Property for the payment of its reasonable compensation
          and expenses and for indemnity against certain liabilities.  (See
          Art. XII, Sec. 6.).
    

             1941 Mortgage

             The lien of the 1992 Mortgage is junior, subject and
          subordinate to the lien of the 1941 Mortgage.

          ISSUANCE OF ADDITIONAL 1992 MORTGAGE BONDS

             General

                                     49
<PAGE>

             The aggregate principal amount of 1992 Mortgage Bonds which
          may be authenticated and delivered under the 1992 Mortgage is
          effectively unlimited.  1992 Mortgage Bonds of any series may be
          issued from time to time on the basis of, and in an aggregate
          principal amount not exceeding:

   
                 (a)  70% of the Cost or fair value to TEP (whichever is
             less) of Net Property Additions (as described below) which do
             not constitute Funded Property;
    

                 (b)  the aggregate principal amount of Retired Bonds; and

                 (c)  an amount of cash deposited with the 1992 Mortgage
             Trustee.

          (See Art. III.)

   
             Property Additions generally include any property which is
          properly chargeable to the utility plant accounts of TEP and is
          used or useful or to be used in the Utility Business.  Net
          Property Additions means, generally, Property Additions (not
          theretofore funded by use as the basis for the authentication and
          delivery of 1992 Mortgage Bonds, the withdrawal of cash or the
          release of Funded Property) after deducting the amount of
          Property Retirements not previously deducted (net of cash,
          obligations and other property delivered to the 1992 Mortgage
          Trustee in connection with such Property Retirements).  (See Art.
          I, Sec. 4.)
    

             Retired Bonds means 1992 Mortgage Bonds and 1941 Mortgage
          Bonds:

                 (a) which have been retired (but not by use of certain
             cash proceeds including proceeds of the release of or
             insurance on Funded Property),

                 (b) which have not theretofore been used for any purpose
             under either of such mortgages and

                 (c) with respect to 1992 Mortgage Bonds retired prior to
             the first certification of Net Property Additions and to be
             used as Retired Bonds after such certification, which have
             been reflected in such certification and matched by an
             appropriate amount of Net Property Additions.

          1941 Mortgage Bonds used as Retired Bonds under the 1992 Mortgage
          may not thereafter be used as such under the 1941 First Mortgage.

             Net Earnings Test

   
             In general, the issuance of 1992 Mortgage Bonds is subject to
          the delivery to the 1992 Mortgage Trustee of a Net Earnings
          Certificate showing net earnings of TEP for 12 consecutive months
          within the preceding 16 months to be at least 1 3/4 times the
          annual interest requirements on all 1992 Mortgage Bonds at the
          time Outstanding (except any to be retired in connection with the
          new issue), new 1992 Mortgage Bonds then applied for, all 1941
          Mortgage Bonds then outstanding and all other indebtedness (with
          certain exceptions) secured by a lien prior to the lien of the
          1992 Mortgage, except that no such net earnings requirement need
          be met if the additional 1992 Mortgage Bonds to be issued are not
          stated by their terms to bear simple interest.  Net earnings are
          calculated before, among other things, provisions for income
          taxes; depreciation or amortization of property; interest and
          amortization of debt discount or expense; any non-recurring
          charge to income of whatever kind or nature (including without
          limitation the recognition of expense due to the non-
          recoverability of investment), whether or not recorded as a non-
          recurring item in TEP's books of account; and any refund of
          revenues previously collected or accrued by TEP subject to
          possible refund.  The calculation of net earnings also does not
          take into account profits or losses from the sale or disposal of
          capital assets or securities or extraordinary items of any kind
          or nature, and for purposes of the net Earnings Certificate, not
          more than 20% of net earnings, may consist of net non-operating
    


                                      50
<PAGE>

   
          income and/or net operations revenue from sources other than the
          Utility Business. (See Art. I, Sec. 5 and Art. III, Sec. 5.)
    

   
             TEP is not required to deliver a Net Earnings Certificate
          prior to issuance of 1992 Mortgage Bonds on the basis of Retired
          Bonds unless:
    

                  (a)(i) the new 1992 Mortgage Bonds are issued within one
             year after the issuance of, or more than two years prior to
             the stated maturity of, the Retired Bonds and (ii) the new
             1992 Mortgage Bonds bear a greater rate of interest than such
             Retired Bonds or

                 (b) the new 1992 Mortgage Bonds are issued in respect of
             Retired Bonds the interest charges on which have been
             excluded from any Net Earnings Certificate filed with the
             1992 Mortgage Trustee since the retirement of such 1992
             Mortgage Bonds.

          In general, the interest requirement with respect to variable
          interest rate indebtedness, if any, is determined with reference
          to the rate or rates  in effect on the date immediately preceding
          such determination or the rate to be in effect upon initial
          authentication.  (See Art. I, Sec. 5 and Art. III, Sec. 7.)

             1992 Mortgage Bonds Issuable

   
             As of September 30, 1998, the amount of Net Property
          Additions, as recorded at Cost, available to be used as the basis
          for the authentication and delivery of 1992 Mortgage Bonds was
          approximately $722 million (assuming that no 1992 Mortgage Bonds
          are issued on the basis of Retired Bonds, as set forth below, and
          that no additional 1941 Mortgage Bonds are issued).  Such Net
          Property Additions would permit (on the basis of such
          assumption), and the net earnings test would not prohibit, the
          authentication and delivery of approximately $505 million in
          aggregate principal amount of 1992 Mortgage Bonds at an assumed
          interest rate of 7.5% per annum.  As of September 30, 1998, the
          amount of Retired 1992 Mortgage Bonds was $153 million and the
          amount of Retired 1941 Mortgage Bonds was $445 million (assuming
          that no 1992 Mortgage Bonds are issued on the basis of Net
          Property Additions, as set forth above, and that no additional
          1941 Mortgage Bonds are issued).  Such Retired Bonds would permit
          (on the basis of such assumption), and the net earnings test
          would not prohibit, the authentication and delivery of $598
          million in aggregate principal amount of 1992 Mortgage Bonds at
          an assumed interest rate of 7.5% per annum.
    

             Net Property Additions and Retired Bonds may also be made the
          basis of the withdrawal of cash deposited in connection with the
          release of property from the lien of the 1992 Mortgage, as
          discussed in "Withdrawal of Cash."

          RELEASE OF PROPERTY

   
             Unless a Default has happened and is continuing, TEP may
          obtain the release from the lien of the 1992 Mortgage of any
          property (except for cash, obligations or other personal property
          held by the 1992 Mortgage Trustee) upon delivery to the 1992
          Mortgage Trustee of, among other things, cash and purchase money
          obligations having an aggregate fair value at least equal to the
          fair value of the property to be released; provided, however,
          that the aggregate principal amount of such purchase money
          obligations will not exceed 70% of the fair value of such
          property; and provided, further, that the aggregate principal
          amount of purchase money obligations and governmental obligations
          delivered in connection with a taking of TEP property by eminent
          domain at any one time held as part of the Trust Estate, and/or
          the trust estate under the 1941 Mortgage, shall not exceed 15% of
          the sum of (x) the aggregate principal amount of 1992 Mortgage
          Bonds then Outstanding and (y) the aggregate principal amount of
          1941 Mortgage Bonds then outstanding.  (See Art. VII, Sec. 3.)
    

                                     51
<PAGE>

             The 1992 Mortgage provides simplified procedures for the
          release of minor properties and property taken by eminent domain,
          and provides for dispositions of certain obsolete property and
          grants or surrender of certain rights without any release or
          consent by the 1992 Mortgage Trustee.

   
             So long as the 1941 Mortgage is in effect, in lieu of other
          release provisions, unless a Default has happened and is
          continuing, TEP may in the alternative obtain the release from
          the lien of the 1992 Mortgage of any property (except cash,
          obligations or personal property held by the 1992 Mortgage
          Trustee) by delivery to the 1992 Mortgage Trustee of, among other
          things:
    

                 (a) a copy of the release of such property from the lien
             of the 1941 Mortgage and

       
                  (b) a certificate or receipt of the 1941 Mortgage Trustee
             stating that the cash constituting any part of the
             consideration received in payment for the property to be
             released is held by 1941 Mortgage Trustee under an
             irrevocable order of TEP directing 1941 Mortgage Trustee to
             pay over the same to the 1992 Mortgage Trustee if and to the
             extent that TEP shall become entitled to withdraw such cash
             from 1941 Mortgage Trustee on the basis of property
             additions, as contemplated in the 1941 Mortgage.
    

          WITHDRAWAL OF CASH

   
             Unless a Default has happened and has not been remedied, all
          or any part of the moneys received by the 1992 Mortgage Trustee
          in consideration of any release, including payments on account of
          purchase money obligations or governmental obligations so
          received, at the election of TEP, shall
    

   
                 (a)  be withdrawn from time to time by TEP (1) in an
             amount equal to 10/7 of the principal amount of 1992 Mortgage
             Bonds to the authentication and delivery of which TEP is
             entitled on the basis of Net Property Additions and/or (2) in
             an amount equal to the principal amount of 1992 Mortgage
             Bonds to the authentication and delivery of which TEP is
             entitled on the basis of Retired Bonds; or
    

   
                 (b)  be applied by the 1992 Mortgage Trustee to the
             purchase or redemption of 1992 Mortgage Bonds, as directed by
             TEP, but subject to the deposit by TEP of certain additional
             moneys to pay premium and accrued interest.  (See Art. VII,
             Secs. 9, 10 and 11.)
    

   
             See "Issuance of Additional 1992 Mortgage Bonds -- 1992
          Mortgage Bonds Issuable" on page 50 for information regarding
          available Net Property Additions and Retired Bonds.
    

   
          CONSOLIDATION, MERGER, TRANSFER OF ASSETS
    

   
             Nothing in the 1992 Mortgage prevents any consolidation or
          merger of TEP or of any successor company with or into which it
          has been lawfully consolidated or merged, with or into any
          corporation, or any conveyance, transfer or lease, subject to the
          1992 Mortgage, of the Mortgaged Property as an entirety or
          substantially as an entirety to any corporation lawfully entitled
          to acquire or lease and operate the same; provided, however, that
          any such lease shall be made expressly subject to immediate
          termination by TEP or by the 1992 Mortgage Trustee at any time
          during the continuance of a Default, and also by the purchaser of
          the property so leased at any sale thereof under the 1992
          Mortgage; and provided, further, that upon any such
          consolidation, merger, conveyance or transfer, or upon any such
          lease the term of which extends beyond the date of maturity of
          any of the 1992 Mortgage Bonds then Outstanding, the payment of
          the principal, premium, if any, and interest, if any, on all of
          the 1992 Mortgage Bonds then Outstanding, and the performance of
          all the covenants in the 1992 Mortgage shall be assumed by the
          corporation formed by such consolidation or into which such
    

                                     52
<PAGE>

   
          merger shall have been made, or by the lessee under any such
          lease the term of which extends beyond the date of maturity of
          any of the 1992 Mortgage Bonds.  (See Art. XI, Sec. 1.)
    

   
             In case TEP is so consolidated with or merged into any other
          corporation, or shall so convey or transfer, subject to the 1992
          Mortgage, the Mortgaged Property as aforesaid, the 1992 Mortgage
          will not (unless the successor corporation elects otherwise)
          become and be a lien upon any of the properties and franchises of
          the successor corporation owned or acquired at the time of such
          merger, consolidation, conveyance or transfer, or thereafter,
          except those acquired by it from TEP and except, among other
          things:
    

                 (a) betterments, extensions, improvements, additions,
             repairs, renewals, replacements, substitutions and
             alterations to, upon, for and of the Mortgaged Property,

                 (b) property acquired or constructed with the proceeds of
             any insurance on any part of the Mortgaged Property or with
             the proceeds of any part of the Mortgaged Property released
             from the lien of the 1992 Mortgage or taken by the exercise
             of the power of eminent domain, and

                 (c) property acquired to maintain and preserve and keep
             the Mortgaged Property in good condition, repair and working
             order.  (See Art. XI, Sec. 3.)

   
             Nothing in the 1992 Mortgage prevents any consolidation or
          merger after the consummation of which TEP would be the surviving
          or resulting corporation or any conveyance, transfer or lease,
          subject to the lien of the 1992 Mortgage, of any part of the
          Mortgaged Property which does not constitute the entirety, or
          substantially the entirety, thereof.  Unless, in the case of a
          consolidation or merger described in the preceding sentence, a
          supplemental indenture otherwise provides, the 1992 Mortgage will
          not become or be a lien upon any of the properties acquired by
          TEP in or as a result of such transaction or any improvements,
          extensions or additions to such properties or any betterments,
          extensions, improvements, additions, repairs, renewals,
          replacements, substitutions or alterations to, upon, for or of
          such properties or any part thereof.  (See Art. XI, Sec. 6.)
    

          MODIFICATION OF 1992 MORTGAGE

   
             Modifications Without Consent
    

   
             Without the consent of any Holders, TEP and the 1992 Mortgage
          Trustee may enter into one or more supplemental indentures for
          any of the following purposes:
    

   
                 (a)  to evidence the succession of another Person to TEP
             and the assumption by any such successor of the covenants of
             TEP in the 1992 Mortgage and in the 1992 Mortgage Bonds; or
    

   
                 (b)  to add one or more covenants of TEP or other
             provisions for the benefit of all Holders or for the benefit
             of the Holders of, or to remain in effect only so long as
             there shall be Outstanding, 1992 Mortgage Bonds of one or
             more specified series, or one or more Tranches thereof, to
             add additional "Defaults" which may be limited so as to
             remain in effect only so long as 1992 Mortgage Bonds of one
             or more specified series, or one or more Tranches thereof,
             shall remain Outstanding or to surrender any right or power
             conferred upon TEP by the 1992 Mortgage; or
    

                 (c)  to correct or amplify the description of any
             property at any time subject to the lien of the 1992 Mortgage
             or better to assure, convey and confirm to the 1992 Mortgage
             Trustee any property subject or required to be subject to the
             lien of the 1992 Mortgage; or


                                     53
<PAGE>

                 (d)  to change or eliminate any provision of the 1992
             Mortgage or to add any new provision to the 1992 Mortgage,
             provided that no such change, elimination or addition shall
             adversely affect the interests of the Holders of the 1992
             Mortgage Bonds of any series or Tranche in any material
             respect; or

                 (e)  to establish the form or terms of the 1992 Mortgage
             Bonds of any series or Tranche as permitted by the 1992
             Mortgage; or

                 (f)  to provide for the authentication and delivery of
             bearer securities and coupons appertaining thereto
             representing interest, if any, thereon and for the procedures
             for the registration, exchange and replacement thereof and
             for the giving of notice to, and the solicitation of the vote
             or consent of, the holders thereof, and for any and all other
             matters incidental thereto; or

                 (g)  to evidence and provide for the acceptance of
             appointment by a successor trustee or by a co-trustee of
             separate trustee; or

                 (h)  to provide for the procedures required to permit the
             utilization of a non-certificated system of registration for
             all, or any series or Tranche of, the 1992 Mortgage Bonds; or

   
                 (i)   to change any place or places where (1) the
             principal of and premium, if any, and interest, if any, on
             all or any series of 1992 Mortgage Bonds, or any Tranche
             thereof, will be payable, (2) all or any series of 1992
             Mortgage Bonds, or any Tranche thereof, may be surrendered
             for registration of transfer, (3) all or any series of 1992
             Mortgage Bonds, or any Tranche thereof, may be surrendered
             for exchange and (4) notices and demands to or upon TEP in
             respect of all or any series of 1992 Mortgage Bonds, or any
             Tranche thereof, and the 1992 Mortgage may be served; or
    

                 (j)   to cure any ambiguity, to correct or supplement any
             provision therein which may be defective or inconsistent with
             any other provision therein; or to make any other changes to
             the provisions thereof or to add other provisions with
             respect to matters and questions arising under the 1992
             Mortgage, so long as such changes or additions do not
             adversely affect the interests of the Holders of 1992
             Mortgage Bonds of any series or Tranche in any material
             respect.

          (See Art. XIII, Sec. 1.)

   
             Without limiting the generality of the foregoing, if the
          Trust Indenture Act is amended so to require changes to the 1992
          Mortgage or the inclusion therein of additional provisions or so
          as to permit changes to, or the elimination of, provisions which
          at the date of the Original 1992 Mortgage or at any time
          thereafter, were required by the Trust Indenture Act to be
          contained in the 1992 Mortgage, the 1992 Mortgage will be deemed
          to have been amended so as to conform to such amendment or to
          effect such changes or elimination, and TEP and the 1992 Mortgage
          Trustee may, without the consent of any Holders, enter into one
          or more supplemental indentures to evidence or effect such
          amendment.  (See Art. XIII, Sec. 1.)
    

   
             Modifications Requiring Consent
    

   
             Except as provided above, with the consent of the Holders of
          not less than 60% in aggregate principal amount of the 1992
          Mortgage Bonds of all series then Outstanding, considered as one
          class, TEP and the 1992 Mortgage Trustee may enter into one or
          more supplemental indentures for the purpose of adding any
          provisions to, or changing in any manner or eliminating any of
          the provisions of, the 1992 Mortgage; provided, however, that if
          there are 1992 Mortgage Bonds of more than one series Outstanding
          and if a proposed supplemental indenture directly affects the
          rights of the Holders of one or more, but less than all, of such
    


                                     54
<PAGE>

   
          series then the consent only of the Holders of 60% in aggregate
          principal amount of Outstanding 1992 Mortgage Bonds of all series
          so directly affected, considered as one class, will be required;
          and provided, further, that if the 1992 Mortgage Bonds of any
          series have been issued in more than one Tranche and if the
          proposed supplemental indenture directly affects the rights of
          the Holders of one or more, but less than all, such Tranches,
          then the consent only of the Holders of 60% in aggregate
          principal amount of the Outstanding 1992 Mortgage Bonds of all
          Tranches so directly affected, considered as one class, will be
          required; and provided, further, that no such amendment or
          modification may, without the consent of the Holder of each
          Outstanding 1992 Mortgage Bond of each series or Tranche so
          directly affected,
    

                 (a) change the stated maturity of the principal of, or
             any installment of principal of or interest on, any 1992
             Mortgage Bond, or reduce the principal amount thereof or the
             rate of interest thereon or the method of calculating such
             rate (or the amount of any installment of interest thereon)
             or any premium payable upon the redemption thereof, or reduce
             the amount of the principal of any Discount Bond that would
             be due and payable upon a declaration of acceleration of the
             maturity thereof, or change the coin or currency (or other
             property) in which any 1992 Mortgage Bond or any premium or
             the interest thereon is payable, or impair the right to
             institute suit for the enforcement of any such payment on or
             after the stated maturity thereof (or, in the case of
             redemption, on or after the redemption date),

                 (b) permit the creation of any lien ranking prior to the
             lien of the 1992 Mortgage with respect to all or
             substantially all of the Mortgaged Property (except Prepaid
             Liens or Permitted Encumbrances) or terminate the lien of the
             1992 Mortgage on all or substantially all of the Mortgaged
             property, or deprive the Holders of the benefit of the lien
             of the 1992 Mortgage,

                 (c) reduce the percentage in principal amount of the
             Outstanding 1992 Mortgage Bonds of such series or Tranche,
             the consent of whose Holders is required for any such
             supplemental indenture, or for any waiver of compliance with
             any provision of the 1992 Mortgage or of any default
             thereunder and its consequences, or reduce the requirements
             for quorum or voting or

                 (d) modify certain of the provisions of the  1992
             Mortgage relating to supplemental indentures, control of
             remedial proceedings or waivers of past defaults except to
             increase the percentage in principal amount referred to
             therein.

          A supplemental indenture which changes or eliminates any covenant
          or other provision of the 1992 Mortgage which has expressly been
          included solely for the benefit of the Holders of, or which is to
          remain in effect only so long as there shall be Outstanding, 1992
          Mortgage Bonds of one or more specified series, or one or more
          Tranches thereof, or modifies the rights of the Holders of 1992
          Mortgage Bonds of such series or Tranches with respect to such
          covenant or other provision, will be deemed not to affect the
          rights under the 1992 Mortgage of the Holders of the 1992
          Mortgage Bonds of any other series or Tranche.  (See Art. XIII,
          Sec. 2.)

   
             Modifications Pre-Approved
    

   
             It is the current intention of TEP that the Holders of
          additional 1992 Mortgage Bonds issued subsequent to the date of
          this prospectus (including Class A Bonds delivered to the Trustee
          under the Indenture) will be deemed to have consented to the
          execution and delivery of a supplemental indenture containing one
          or more, or all, of the amendments to the 1992 Mortgage described
          below:
    

   
                 (a)  to add a definition of the term "fair value",
             providing, among other things, that "fair value" with respect
             to any property will be determined by reference to (1) the
             amount which would be likely to be obtained in an arm's
             length transaction with respect to such property between an
    

                                      55
<PAGE>

   
             informed and willing buyer and an informed and willing
             seller, under no compulsion, respectively, to buy or sell,
             (2) the amount of investment with respect to such property
             which, together with a reasonable return thereon, would be
             likely to be recovered through ordinary business operations
             or otherwise, (3) the cost, accumulated depreciation and
             replacement cost with respect to such property and (4) any
             other relevant factors;
    

   
                 (b)  to add a definition of the term "purchase money
             mortgage" to mean, generally, a lien on the property being
             acquired or disposed of by TEP or being released from the
             lien of the 1992 Mortgage which is retained by the transferor
             of such property or granted to one or more persons in
             connection with the transfer or release thereof, or granted
             to or held by a trustee or agent for any such persons, and
             which would include, among other things, liens which (1)
             permit the incurrence of indebtedness secured thereby in
             addition to indebtedness incurred in connection with the
             transfer of specific property, (2) permit the subjection of
             other property to the lien thereof and/or (3) were granted
             prior to any particular transfer of property, which cover
             other property and/or which secure other obligations issued
             prior or subsequent to the obligations delivered in
             connection with any particular acquisition, disposition or
             release of property; and to add a definition of the term
             "purchase money obligation" to mean an obligation secured by
             a purchase money mortgage;
    

   
                 (c)  to modify the provision described in clause (a)(2)
             in the first paragraph under "Withdrawal of Cash" on page 52
             to refer to 10/7 of the principal amount of 1992 Mortgage
             Bonds in lieu of the principal amount thereof;
    

   
                 (d)  to modify the provisions described in the second
             proviso to the first paragraph under "Release of Property" on
             page 51 (1) to delete such provisions or to provide that the
             same may be disregarded upon specified conditions; or (2) to
             delete from such provisions the limitation of 15%; or (3) to
             change such percentage to any higher percentage not exceeding
             100%; and/or
    

                 (e)  to eliminate any requirement to deliver a Net
             Earnings Certificate in connection with the authentication
             and delivery of 1992 Mortgage Bonds on the basis of Retired
             Bonds.
             (See Art. II, Sec.2 of Supplemental Indenture No.3.)

   
             The prospective amendments described in clauses (b), (c) and
          (d) in the preceding paragraph, if adopted, would have the
          effect, among other things, of facilitating transactions which
          would result in a  disaggregation of the generation, transmission
          and/or distribution segments of TEP's business, including
          transfers to other entities whether or not affiliated with TEP. 
          See Risk Factors - "TEP Cannot Predict Impact of Retail
          Competition on Operating Results and Financial Condition" on page
          7 for information regarding the contemplated divestiture by TEP
          of its generation assets.
    


          DEFAULTS

   
               Any of the following events will constitute a "Default"
          under the 1992 Mortgage:
    

   
                    (a)  failure to pay interest on any 1992 Mortgage Bond,
               or to make any sinking fund payment required hereunder in
               respect of 1992 Mortgage Bonds of any series, for a period
               of 60 days after the same becomes due; or
    

   
                    (b)  failure to pay principal of or premium, if any, on
               any 1992 Mortgage Bond when due, whether at stated maturity,
               upon redemption or otherwise; or
    

   
                    (c)  failure to perform or observe any other covenant
               or condition required to be performed or observed by TEP
               (except in respect of the refund or reimbursement of taxes,
    
                                       56
<PAGE>

   
               assessments or other governmental charges, for which the
               holders of 1992 Mortgage Bonds may look only to TEP), for a
               period of 90 days after written notice to TEP by the 1992
               Mortgage Trustee or to TEP and the 1992 Mortgage Trustee by
               the holders of at least 25% in principal amount of the 1992
               Mortgage Bonds at the time Outstanding, unless the 1992
               Mortgage Trustee, or the 1992 Mortgage Trustee and the
               Holders of a principal amount of the 1992 Mortgage Bonds not
               less than the principal amount of 1992 Mortgage Bonds the
               Holders of which gave such notice, as the case may be, shall
               agree in writing to an extension of such period prior to its
               expiration; provided, however, that the 1992 Mortgage
               Trustee, or the 1992 Mortgage Trustee and the Holders of
               such principal amount of the 1992 Mortgage Bonds, as the
               case may be, shall be deemed to have agreed to an extension
               of such period if corrective action is initiated by TEP
               within such period and is being diligently pursued; or
    

   
                    (d)  certain events relating to the bankruptcy,
               insolvency or reorganization of TEP or the appointment of a
               receiver or trustee for its property; or
    

                    (e)  the happening of a "Default" within the meaning of
               the 1941 Mortgage; provided, however, that the waiver or
               cure of such "Default" under the 1941 Mortgage and the
               rescission and annulment of the consequences thereof shall
               constitute a waiver or cure of the corresponding Default
               under the 1992 Mortgage and a rescission and annulment of
               the consequences thereof; and provided, further, that no
               such waiver, cure, rescission or annulment shall affect any
               other Default.

                    (f)  so long as the Trustee under the Indenture holds
               any 1992 Mortgage Bonds as Class A Bonds under the
               Indenture, an "Event of Default" under the Indenture;
               provided, however, that the waiver or cure of such "Event of
               Default" under the Indenture will constitute a cure of the
               corresponding Default under the 1992 Mortgage and a
               rescission and annulment of the consequences thereof.

          (See Art. VIII, Sec. 1 of Original 1992 Mortgage, and Art. III,
          Sec. 1 of Supplemental Indenture No. 3.)

          REMEDIES

   
               Acceleration of Maturity
    

   
               Upon the occurrence of a Default under the 1992 Mortgage,
          the 1992 Mortgage Trustee may, and upon the written request of
          the Holders of a majority in aggregate principal amount of the
          1992 Mortgage Bonds then Outstanding shall, by notice in writing
          given to TEP, declare the principal (or, in the case of a
          Discount Bond, such portion of the principal as may be specified
          in the terms thereof) of all 1992 Mortgage Bonds then Outstanding
          and the premium, if any, and interest accrued thereon, if any,
          immediately due and payable. If, at any time after such
          declaration, and prior to the stated maturity of the latest
          maturing 1992 Mortgage Bonds then Outstanding, and before any
          sale of any of the Trust Estate has been made and before any
          judgment or decree for the payment of the moneys due shall have
          been entered, TEP shall:
    

   
                    (a) pay all arrears of interest upon all 1992 Mortgage
               Bonds then Outstanding, with interest (if and to the extent
               permitted by law) on the overdue installments of interest at
               the respective rates borne by such 1992 Mortgage Bonds,
    

   
                    (b) pay the reasonable expenses of the 1992 Mortgage
               Trustee and all other sums payable under the 1992 Mortgage
    

                                       57
<PAGE>

   
               (except the principal of 1992 Mortgage Bonds so declared to
               be due and payable, unless such 1992 Mortgage Bonds shall in
               the meantime have matured by their terms, and except
               interest accrued thereon since the last preceding interest
               payment date) and
    

   
                    (c) cure all other Defaults, if any, or make adequate
               arrangements therefor,
    

          then in every such case the Holders of at least a majority in
          aggregate principal amount of the 1992 Mortgage Bonds then
          Outstanding may waive the Default by reason of which the
          principal of the 1992 Mortgage Bonds shall have so become due and
          payable, and may rescind and annul such declaration and its
          consequences, but no such waiver or rescission or annulment shall
          extend to or affect any subsequent or other then existing Default
          or impair any right or remedy consequent thereon.  (See Art.
          VIII, Sec. 3.)

   
               Possession of Trust Estate
    

   
               In case one or more Defaults have happened and have not been
          remedied, TEP, upon demand of the 1992 Mortgage Trustee, will
          forthwith surrender to the 1992 Mortgage Trustee possession of,
          and, to the extent permitted by law, the 1992 Mortgage Trustee,
          may enter and take possession of, the Trust Estate, and may use,
          operate, manage and control the same and conduct the business
          thereof or, with or without entry, may sell the same to the
          highest bidder.  (See Art. VIII, Secs. 4 and 5.)  In case of any
          sale of the Trust Estate or any part thereof, whether made under
          power of sale or by virtue of judicial proceedings, the principal
          (or, in the case of a Discount Bond, such portion of the
          principal as may be specified in the terms thereof) of and
          premium, if any, and interest, if any, on all 1992 Mortgage Bonds
          then Outstanding, if not already due, will immediately become due
          and payable.   (See Art. VIII, Sec. 10.)
    

   
               Right to Direct Proceedings
    

               The Holders of not less than a majority in aggregate
          principal amount of the 1992 Mortgage Bonds at the time
          Outstanding have the right, during the continuance of a Default,

                    (a) to require the 1992 Mortgage Trustee to proceed to
               enforce the 1992 Mortgage, either by judicial proceedings
               for the enforcement of the payment of the 1992 Mortgage
               Bonds and the foreclosure of the 1992 Mortgage, the sale of
               the Trust Estate or otherwise or, at the election of the
               1992 Mortgage Trustee, by the exercise of the power of entry
               and/or sale hereby conferred; and

                    (b) to direct the time, method, and place of conducting
               any proceeding for any remedy available to the 1992 Mortgage
               Trustee, or exercise any trust or power conferred upon the
               1992 Mortgage Trustee or

                    (c) on behalf of the Holders of all the 1992 Mortgage
               Bonds, consent to the waiving of any past Default and its
               consequences except a Default with respect to the payment of
               principal, premium or interest;

          provided, however, that (x) such direction shall not be in
          conflict with any rule of law or the 1992 Mortgage or expose the
          1992 Mortgage Trustee to personal liability in circumstances in
          which indemnity would not, in the reasonable judgment of the 1992
          Mortgage Trustee, be adequate, (y) the 1992 Mortgage Trustee may
          take any other action deemed proper by the 1992 Mortgage Trustee
          which is not inconsistent with such direction, and (z) the 1992
          Mortgage Trustee shall not determine that the action so directed
          would be unjustly prejudicial to the Holders not taking part in
          such direction. (See Art. VIII, Sec. 19.)

   
               Limitation on Right to Institute Proceedings
    

                                      58
<PAGE>

  
   
               No Holder of any 1992 Mortgage Bond will have any right to
          institute any proceeding in equity or at law for the collection
          of any sum due from TEP on account of principal, and premium, if
          any, or interest, or for the appointment of a receiver or
          trustee, or for any other remedy, unless:
    

                    (a) such Holder previously has given to the 1992
               Mortgage Trustee written notice of Default and of the
               continuance thereof,

                    (b) the Holders of not less than a majority in
               aggregate principal amount of the 1992 Mortgage Bonds then
               Outstanding have made written request upon the 1992 Mortgage
               Trustee to institute such proceeding and shall have offered
               to the 1992 Mortgage Trustee reasonable indemnity and
               security against the costs, expenses and liabilities to be
               incurred therein or thereby,

                    (c) the 1992 Mortgage Trustee for 60 days after receipt
               of such notice, request and offer of indemnity has failed to
               institute such proceeding, and

                    (d) no directions inconsistent with such request have
               been given by the Holders; it being understood that no one
               or more Holders of 1992 Mortgage Bonds will have any right
               to affect, disturb or prejudice the rights of the Holders of
               any other 1992 Mortgage Bonds.  (See Art. VIII, Sec. 14.)

   
               No Impairment of Right to Receive Payment
    

               Nothing contained in the 1992 Mortgage will affect or impair
          the right of action, which is absolute and unconditional, of the
          Holders of the 1992 Mortgage Bonds to institute suit to enforce
          the payment of the principal thereof and the premium, if any, and
          interest, if any, thereon.  (See Art. VIII, Sec. 14.)

   
               Notice of Default
    

   
               The 1992 Mortgage Trustee is required, within 90 days after
          the occurrence thereof, to give to the Bondholders notice of all
          defaults under the 1992 Mortgage (without regard to periods of
          grace or notices) known to the 1992 Mortgage Trustee, unless such
          defaults have been cured or waived, except that no notice of a
          default of the character described in clause (a) or (c) under
          "Defaults" on page 56 may be given until at least 60 days after
          the occurrence thereof; provided, however, that, except in the
          case of a default of the character described in clause (a) or (b)
          under "Defaults", the 1992 Mortgage Trustee may withhold such
          notice if the 1992 Mortgage Trustee in good faith determines that
          the withholding of such notice is in the interests of the
          Bondholders. (See Art. VIII, Sec. 2.)
    

   
               Indemnification of 1992 Mortgage Trustee
    

               As a condition precedent to certain actions by the 1992
          Mortgage Trustee in the enforcement of the Lien of the 1992
          Mortgage and/or the institution of action on the 1992 Mortgage
          Bonds, the 1992 Mortgage Trustee may require reasonable indemnity
          against costs, expenses and liabilities to be incurred therein or
          thereby.  (See Art. VIII, Sec. 14; Art XII, Sec. 2.)

   
               Remedies Limited by State Law
    

               The laws of the States of Arizona and New Mexico, being the
          states in which the Mortgaged Property is located, may limit or
          deny the ability of the 1992 Mortgage Trustee or the Bondholders
          to enforce certain rights and remedies provided in the 1992
          Mortgage in accordance with their terms.


                                      59
<PAGE>

          SATISFACTION AND DISCHARGE

   
               Any 1992 Mortgage Bond or Bonds, or any portion of the
          principal amount thereof, will be deemed to have been paid for
          purposes of the 1992 Mortgage, and, at the election of TEP, the
          entire indebtedness of TEP in respect thereof will be deemed to
          have been satisfied and discharged, if there has been irrevocably
          deposited with the 1992 Mortgage Trustee, in trust:
    

                    (a) money in an amount which will be sufficient, or

                    (b) in the case of a deposit made prior to the maturity
               of such 1992 Mortgage Bonds, Eligible Obligations (as
               described below), which do not contain provisions permitting
               the redemption or other prepayment thereof at the option of
               the issuer thereof, the principal of and the interest on
               which when due, without any regard to reinvestment thereof,
               will provide monies which, together with the money, if any,
               deposited with or held by the 1992 Mortgage Trustee, will be
               sufficient, or

                    (c) a combination of (a) and (b) which will be
               sufficient, to pay when due the principal of and premium, if
               any, and interest, if any, due and to become due on such
               1992 Mortgage Bond or Bonds or portions thereof. (See Art.
               XV, Sec. 1. of Original 1992 Mortgage; Art. III, Sec.1(a) of
               Supplemental Indenture No. 3.).  For this purpose, Eligible
               Obligations include direct obligations of, or obligations
               unconditionally guaranteed by, the United States of America,
               entitled to the benefit of the full faith and credit
               thereof, and certificates, depositary receipts or other
               instruments which evidence a direct ownership interest in
               such obligations or in any specific interest or principal
               payments due in respect thereof.

   
               The 1992 Mortgage will be deemed to have been satisfied and
          discharged when no 1992 Mortgage Bonds remain Outstanding
          thereunder and TEP has paid all other sums payable by it under
          the 1992 Mortgage.
    

          RESIGNATION OR REMOVAL OF 1992 MORTGAGE TRUSTEE

   
               The 1992 Mortgage Trustee may resign at anytime by giving
          written notice thereof to TEP or may be removed at any time by
          the Holders of a majority in principal amount of 1992 Mortgage
          Bonds then Outstanding.  No resignation or removal of the 1992
          Mortgage Trustee and no appointment of a successor trustee will
          become effective until the acceptance of appointment by a
          successor trustee in accordance with the requirements of the 1992
          Mortgage.  So long as no Default or event which, after notice or
          lapse of time, or both, would become a Default has occurred and
          is continuing, if TEP has delivered to the 1992 Mortgage Trustee
          a Certified Resolution of its Board of Directors appointing a
          successor trustee and such successor has accepted such
          appointment in accordance with the terms of the 1992 Mortgage,
          the 1992 Mortgage Trustee will be deemed to have resigned and the
          successor will be deemed to have been appointed as contemplated
          above.  (See Art XII, Sec. 9.)
    

          EVIDENCE TO BE FURNISHED TO 1992 MORTGAGE TRUSTEE

   
               Compliance with the provisions of the 1992 Mortgage is
          evidenced by written statements of officers of TEP or persons
          selected or paid by TEP.  In certain cases, opinions of counsel
          and certification of an engineer, accountant, appraiser or other
          expert (who in some cases must be independent) must be furnished. 
          In addition, the Trust Indenture Act currently requires that TEP
          give the 1992 Mortgage Trustee, not less often than annually, a
          brief statement as to TEP's compliance with the conditions and
          covenants under the 1992 Mortgage.
    

          GOVERNING LAW

                                      60
<PAGE>

               The 1992 Mortgage and the 1992 Mortgage Bonds are governed
          by and construed in accordance with the law of the State of New
          York except to the extent that the Trust Indenture Act or the law
          of any jurisdiction wherein the Mortgaged Property is located is
          applicable.


                    CERTAIN U.S. FEDERAL INCOME TAX CONSIDERATIONS

   
               The following is a discussion of certain United States
          income tax considerations of the acquisition, ownership and
          disposition of the New Bonds, and is based on the Internal
          Revenue Code of 1986, as amended (the "Code"), existing and
          proposed Treasury regulations promulgated thereunder
          ("Regulations"), administrative rulings and judicial decisions,
          all as in effect as of the date of this prospectus.  Such
          authorities may be repealed, revoked or modified with possible
          retroactive effect so as to result in federal income tax
          consequences different from those discussed below.  Except where
          otherwise noted, this discussion deals only with New Bonds held
          as capital assets (within the meaning of Code section 1221) by
          holders that purchased the Old Bonds directly from the Initial
          Purchasers, and not with special classes of holders such as
          banks, insurance companies, dealers in securities or currencies,
          traders in securities that elect to mark to market, tax-exempt
          organizations, persons holding the New Bonds as part of a
          straddle, hedging or conversion transaction, or persons whose
          functional currency is not the U.S. dollar.  All persons
          considering the purchase of the New Bonds are advised to consult
          their own tax advisors concerning the consequences, in their
          particular circumstances, under the Code and the laws of any
          other taxing jurisdiction, of the acquisition, ownership and
          disposition of the New Bonds.
    

          TAX CONSEQUENCES TO U.S. HOLDERS

               As used herein, the term "U.S. Holder" means a beneficial
          owner of a New Bond that is for United States federal income tax
          purposes (a) a citizen or resident of the United States, (b) a
          corporation, partnership or other entity created or organized in
          or under the laws of the United States or any political
          subdivision thereof, (c) an estate the income of which is subject
          to United States federal income tax without regard to its source,
          or (d) a trust if a court within the United States is able to
          exercise primary supervision over the administration of the trust
          and one or more United States persons have the authority to
          control all substantial decisions of the trust.  A "Non-U.S.
          Holder" is a beneficial owner of the New Bonds that is not a U.S.
          Holder.

               Exchange of Old Bonds for New Bonds

                    An exchange of Old Bonds for New Bonds should not
          constitute a taxable event for federal income tax purposes
          because the New Bonds should not be considered to differ
          materially in kind or extent from the Old Bonds.  Rather, the New
          Bonds should be treated as a continuation of the Old Bonds in the
          hands of a U.S. Holder.  As a result, U.S. Holders who exchange
          their Old Bonds for New Bonds should not recognize any income,
          gain or loss for federal income tax purposes with respect to such
          exchange, and a U.S. Holder will have the same tax basis and
          holding period in the New Bonds as such U.S. Holder had in the
          Old Bonds.

               Payments of Interest on the New Bonds

   
               For U.S. federal income tax purposes, the New Bonds will be
          treated as indebtedness of TEP.  Stated interest on a New Bond
          will generally be taxable to a U.S. Holder as ordinary income at
          the time it is paid or accrued in accordance with the U.S.
          Holder's method of accounting for tax purposes.
    


               Sale, Exchange, or Redemption of the New Bonds

                                     61

<PAGE>

               Upon the sale, exchange or redemption of a New Bond, a U.S.
          Holder will recognize gain or loss equal to the difference
          between the amount realized upon the sale, exchange, or
          redemption (other than amounts attributable to accrued but unpaid
          interest), and such U.S. Holder's adjusted tax basis in the New
          Bond.  A U.S. Holder's adjusted tax basis in a New Bond will be,
          in general, the issue price of the New Bond.  Such gain or loss
          will be capital gain or loss, and will be long term capital gain
          or loss if at the time of the sale, exchange or redemption, the
          New Bonds have been held for more than one year.  The net capital
          gains of individuals are taxed, under certain circumstances, at
          lower rates than ordinary income.  The deductibility of capital
          losses is subject to limitations.

               Information Reporting and Backup Withholding

       
                In general, information reporting will apply to certain
          payments of principal and interest on the New Bonds, and to
          payments of the proceeds upon the sale of the New Bonds to U.S.
          Holders other than certain exempt recipients (such as
          corporations).  A 31% backup withholding tax will apply to such
          payments if the U.S. Holder:
    

                    (a)  fails to provide a taxpayer identification number
               ("TIN"),

   
                    (b)  furnishes an incorrect TIN,
    

   
                    (c)  is notified by the Internal Revenue Service
               ("IRS") that it has failed to properly report payments of
               interest and dividends, or
    

   
                    (d)  under certain circumstances, fails to certify,
               under penalty of perjury, that it has furnished a correct
               TIN and has not been notified by the IRS that it is subject
               to backup withholding.
    

   
               In the case of interest paid after December 31, 1999, a U.S.
          Holder generally will be subject to backup withholding at a 31%
          rate unless certain IRS certification procedures are complied
          with directly or through an intermediary.  TEP will furnish
          annually to the IRS and to record holders of the New Bonds (other
          than with respect to certain exempt holders) information relating
          to interest paid during the calendar year.
    

               Any amounts withheld under the backup withholding rules will
          be allowed as a refund or a credit against such U.S. Holder's
          U.S. federal income tax liability provided the required
          information is furnished to the IRS.

          TAX CONSEQUENCES TO NON-U.S. HOLDERS

               Payments of Interest on the New Bonds

   
               Subject to the discussion below concerning backup
          withholding, no withholding of United States federal income tax
          will be required with respect to the payment by TEP or any paying
          agent of principal or interest on a New Bond held by a Non-U.S.
          Holder, provided that the beneficial owner:
    

   
                    (a)  does not actually or constructively own 10% or
               more of the total combined voting power of all classes of
               stock of TEP entitled to vote within the meaning of Section
               871(h)(3) of the Code and the regulations thereunder,
    

   
                    (b)  is not a controlled foreign corporation related,
               directly or indirectly, to TEP through stock ownership,
    

                                      62
<PAGE>

   
                    (c)  is not a bank whose receipt of interest on a New
               Bond is described in Section 881(c)(3)(A) of the Code and
    

   
                    (d) satisfies the statement requirement (described
               generally below) set forth in Section 871(h) and Section
               881(c) of the Code and the Regulations thereunder.
    

   
               To satisfy the requirement referred to in (d) above, the
          beneficial owner of a New Bond, or a financial institution
          holding the New Bond on behalf of such owner, must provide, in
          accordance with specified procedures, TEP or its paying agent
          with a statement to the effect that the beneficial owner is not a
          U.S. person.  These requirements will be met if (x) the
          beneficial owner provides his name and address, and certifies,
          under penalties of perjury, that he is not a U.S. person (which
          certification may be made on an IRS Form W-8 (or successor form)
          or (y) a financial institution holding the New Bond on behalf of
          the beneficial owner certifies, under penalties of perjury, that
          such statement has been received by it and furnishes a paying
          agent with a copy thereof.
    

   
               In the event that any of the above requirements are not
          satisfied, TEP will nonetheless not withhold federal income tax
          on interest paid to a Non-U.S. Holder if it receives IRS Form
          4224 (or, after December 31, 1999, a Form W-8) from that Non-U.S.
          Holder, establishing that such income is effectively connected
          with the conduct of a trade or business in the United States,
          unless TEP has knowledge to the contrary.  Interest paid to a
          Non-U.S. Holder (other than a partnership) that is effectively
          connected with the conduct by the holder of a trade or business
          in the United States is generally taxed at the graduated rates
          that are applicable to United States persons.  In the case of a
          Non-U.S. Holder that is a corporation, such effectively connected
          income may also be subject to the United States federal branch
          profits tax (which is generally imposed on a foreign corporation
          on the deemed repatriation from the United States of effectively
          connected earnings and profits) at a 30% rate (unless the rate is
          reduced or eliminated by an applicable income tax treaty and the
          Non-U.S. Holder is a qualified resident of the treaty country).
    

               Sale, Exchange or Redemption of the New Bonds

   
               A Non-U.S. Holder will generally not be subject to United
          States federal income tax with respect to gain recognized on a
          sale, exchange or redemption of New Bonds unless:
    

                    (a)  the gain is effectively connected with a trade or
               business of the Non-U.S. Holder in the United States,

   
                    (b)  in the case of a Non-U.S. Holder who is an
               individual and hold the New Bonds as capital assets, such
               holder is present in the United States for 183 or more days
               in the taxable year of the sale or other disposition and
               certain other conditions are met, or
    

   
                    (c)  the Non-U.S. Holder is subject to tax pursuant to
               certain provisions of the Code applicable to United States
               expatriates.
    

   
               Gains derived by a Non-U.S. Holder (other than a
          partnership) from the sale or other disposition of New Bonds that
          are effectively connected with the conduct by the Holder of a
          trade or business in the United States are generally taxed at the
          graduated rates that are applicable to United States persons.  In
          the case of a Non-U.S. Holder that is a corporation, such
          effectively connected income may also be subject to the United
          States branch profits tax.  If any individual Non-U.S. Holder
          falls under clause (b) in the preceding paragraph, such holder
          will be subject to a flat 30% tax on the gain derived from the
          sale or other disposition, which may be offset by United States
          source capital losses recognized within the same taxable year as
          such sale or other disposition (notwithstanding the fact that he
          is not considered a resident of the United States).
    

                                       63
<PAGE>

               Information Reporting and Backup Withholding

   
               No information reporting or backup withholding will be
          required with respect to payments made by TEP or any paying agent
          to Non-U.S. Holders if a statement described in (d) in the first
          paragraph under "Payments of Interest on the New Bonds" on page
          62 has been received and the payor does not have actual knowledge
          that the beneficial owner is a United States person.
    

               Information reporting and backup withholding will not apply
          to interest on a New Bond paid or collected by a custodian,
          nominee, or agent on behalf of the beneficial owner of such New
          Bond if such custodian, nominee, or agent has documentary
          evidence in its records that the beneficial owner is not a U.S.
          person and certain other conditions are met, or the beneficial
          owner otherwise establishes an exemption.

               Payments on the sale, exchange or other disposition of a New
          Bond made to or through a foreign office of a broker generally
          will not be subject to backup withholding.  However, payments
          made by a broker that is a United States person, a controlled
          foreign corporation for United States federal income tax
          purposes, a foreign person 50 percent or more of whose gross
          income is effectively connected with a United States trade or
          business for a specified three year period, or (with respect to
          payments after December 31, 1999) a foreign partnership with
          certain connections to the United States, will be subject to
          information reporting unless the broker has in its records
          documentary evidence that the beneficial owner is not a United
          States person and certain other conditions are met, or the
          beneficial owner otherwise establishes an exemption.  Backup
          withholding may apply to any payment that such broker is required
          to report if the broker has actual knowledge that the payee is a
          United States person.  Payments to or through the United States
          office of a broker will be subject to information reporting and
          backup withholding unless the Holder certifies, under penalties
          of perjury, that it is not a United States person or otherwise
          establishes an exemption.

   
               For payments made after December 1, 1999, with respect to
          New Bonds held by foreign partnerships, IRS regulations require
          that the certification described in (d) in the first paragraph
          under "Payments of Interest on the New Bonds" on page 62 be
          provided by the partners, rather than by the foreign partnership,
          and that the partnership provide certain information, including a
          United States taxpayer identification number.  A look-through
          rule will apply in the case of tiered partnerships.
    

               Non-U.S. Holders should consult their tax advisors regarding
          the application of information reporting and backup withholding
          in their particular situations, the availability of an exemption
          therefrom, and the procedures for obtaining such an exemption, if
          available.  Any amounts withheld under the backup withholding
          rules will be allowed as a refund or credit against the Non-U.S.
          Holder's U.S. federal income tax liability and may entitle such
          Holder to a refund, provided the required information is
          furnished to the IRS.


                                 PLAN OF DISTRIBUTION

   
               Except as described below, a broker-dealer may not
          participate in the Exchange Offer in connection with a
          distribution of the New Bonds. Each broker-dealer that receives
          New Bonds for its own account in the Exchange Offer must
          acknowledge that it will deliver a prospectus in connection with
          any resale of such New Bonds. This prospectus, as it may be
          amended or supplemented from time to time, may be used by a
          broker-dealer in connection with resales of New Bonds received in
          exchange for Old Bonds where such Old Bonds were acquired as a
          result of market-making activities or other trading activities.
          TEP shall for a period of 90 days after the Expiration Date make
    

                                      64
<PAGE>

   
          this prospectus, as amended or supplemented, available to any
          broker-dealer for use in connection with any such resale. In
          addition, until ______________, 1999 all dealers effecting
          transactions in the New Bonds may be required to deliver a
          prospectus.
    

   
               TEP will not receive any proceeds from any sale of New Bonds
          by broker-dealers. New Bonds received by broker-dealers for their
          own account in the Exchange Offer may be sold from time to time
          in one or more transactions in the over-the-counter market, in
          negotiated transactions, through the writing of options on the
          New Bonds or a combination of such methods of resale, at market
          prices prevailing at the time of resale, at prices related to
          such prevailing market prices or negotiated prices. Any such
          resale may be made directly to purchasers or to or through
          brokers or dealers who may receive compensation in the form of
          commissions or concessions from any such broker-dealer and/or the
          purchasers of any such New Bonds. Any broker-dealer that resells
          New Bonds that were received by it for its own account pursuant
          to the Exchange Offer and any broker or dealer that participates
          in a distribution of such New Bonds may be deemed to be an
          "underwriter" within the meaning of the Securities Act and any
          profit on any such resale of New Bonds and any commissions or
          concessions received by any such persons may be deemed to be
          underwriting compensation under the Securities Act. The Letter of
          Transmittal states that by acknowledging that it will deliver and
          by delivering a prospectus, a broker-dealer will not be deemed to
          admit that it is an "underwriter" within the meaning of the
          Securities Act.
    

   
               TEP has agreed to pay all expenses incident to the Exchange
          Offer other than commissions or concessions of any brokers or
          dealers and expenses of counsel for the holders of the New Bonds
          and will indemnify the holders of the New Bonds (including any
          broker-dealers) against certain liabilities, including
          liabilities under the Securities Act.
    


                                ADDITIONAL INFORMATION

   
               TEP is subject to the informational requirements of the
          Securities Exchange Act of 1934, as amended (the "Exchange Act"),
          and files annual, quarterly and other reports with the Securities
          and Exchange Commission (the "SEC").  You may read and copy these
          reports at the SEC's Public Reference Room at 450 Fifth Street,
          N.W., Washington, D.C. 20549, and the Regional Offices of the SEC
          located at 500 West Madison Street, 14th Floor, Chicago, Illinois
          60661-2511 and 7 World Trade Center, Suite 1300, New York, New
          York 10048.  You may obtain information on the operation of the
          SEC's public reference rooms by calling the SEC at 1-800-SEC-
          0330.  You may obtain copies of such documents from the Public
          Reference Section of the SEC at prescribed rates by writing to it
          at 450 Fifth Street, N.W., Washington,  D.C. 20549.  You may also
          read and copy information concerning TEP at the offices of the
          New York Stock Exchange, Inc., 20 Broad Street, New York, New
          York 10005.  The SEC maintains an Internet site
          (http://www.sec.gov.) that contains TEP's reports and other
          information filed with the SEC.  UniSource Energy Corporation,
          the sole shareholder of TEP, maintains an Internet site
          (http://www.unisourceenergy.com) that contains information
          concerning UniSource Energy and its affiliates including TEP.
    

   
               During 1998, TEP has filed the following documents with the
          SEC pursuant to the Exchange Act:
    

               .    Annual Report on Form 10-K for the year ended December
                    31, 1997, as amended by Form 10-K/A, dated March 5,
                    1998 (as so amended, the "1997 10-K").

   
               .    Quarterly Reports on Form 10-Q for the quarters ended,
                    respectively, March 31, 1998 (the "First Quarter 10-
                    Q"), June 30, 1998 (the "Second Quarter 10-Q") and
                    September 30, 1998 (the "Third Quarter 10-Q").
    

                                     65
<PAGE>

   
               .    Current Reports on Form 8-K dated, respectively, June
                    26, July 16, July 22, and August 27, December 8 and
                    December 15, 1998.
    

   
          TEP is incorporating all of these documents by reference into
          this prospectus.  Copies of the 1997 10-K, the First Quarter 10-
          Q, the Second Quarter 10-Q and the Third Quarter 10-Q, excluding
          exhibits, are attached as Appendices A, B, C and D to this
          prospectus.  All documents subsequently filed by TEP pursuant to
          Section 13 or 14 of the Exchange Act, prior to the termination of
          the Exchange Offer, will be deemed to be incorporated into this
          prospectus by reference and to be a part hereof from the
          respective dates of filing thereof.  All documents incorporated
          into this prospectus by reference are sometimes called the
          "Incorporated Documents".  Any statement contained in an
          Incorporated Document will be deemed to be modified or superseded
          for all purposes to the extent that a statement contained in any
          subsequently filed Incorporated Document modifies or replaces
          such statement.
    

   
               The information contained at the Internet site of UniSource
          Energy Corporation is not incorporated in this prospectus by
          reference and you should not consider it a part of this
          prospectus.
    


                                    LEGAL MATTERS

   
               The validity of the New Bonds will be passed upon for TEP by
          Dennis R. Nelson, Esq., Vice President, General Counsel and
          Corporate Secretary of TEP and Thelen Reid & Priest LLP.  In
          giving their opinions, Thelen Reid & Priest LLP may rely, as to
          all matters of Arizona law, upon the opinion of Mr. Nelson and,
          as to all matters of New Mexico law, upon the opinion of Rodey,
          Dickason, Sloan, Akin & Robb P.A.  In giving his opinion, Mr.
          Nelson may rely as to all matters of New York law and certain
          federal laws upon the opinion of Thelen Reid & Priest LLP.
    


                                       EXPERTS

               To the extent that any of the statements made under
          DESCRIPTION OF THE INDENTURE -- "Security", DESCRIPTION OF THE
          1941 MORTGAGE - "Security" and DESCRIPTION OF THE 1992 MORTGAGE -
          "Security" are, or refer to, statements of law or legal
          conclusions, such statements have been reviewed (a) insofar as
          Arizona law is concerned, by Snell & Wilmer L.L.P. and (b)
          insofar as New Mexico law is concerned, by Rodey, Dickason,
          Sloan, Akin & Robb, P.A., and have been set forth herein in
          reliance upon the authority of such firms as experts.

   
               To the extent that the statements made in the 1997 10-K in
          "Rates and Regulation" and "Environmental Matters" under ITEM 1.
          -- BUSINESS and under ITEM 3. -- LEGAL PROCEEDINGS are, or refer
          to, statements of law or legal conclusions, and insofar as
          Arizona law is concerned, such statements have been prepared or
          reviewed by Dennis R. Nelson, Esq., and have been incorporated
          herein by reference in reliance upon the authority of Mr. Nelson
          as an expert.
    

               The statements made under CERTAIN  U.S. FEDERAL INCOME TAX
          CONSIDERATIONS have been prepared or reviewed by Thelen Reid &
          Priest LLP and have been set forth herein in reliance upon the
          authority of such firm as experts.

   
               The consolidated financial statements incorporated in this
          prospectus by reference from TEP's 1997 Form 10-K have been
          audited by Deloitte & Touche LLP, independent auditors, as stated
          in their report, which is incorporated herein by reference, and
          have been so incorporated in reliance upon the report of such
          firm given upon their authority as experts in accounting and
          auditing.
    

                                      66
<PAGE>

   
               With respect to the unaudited consolidated financial
          information of TEP for the three-month period ended March 31,
          1998, the three-month and six-month periods ended June 30, 1998,
          and the three-month and nine-month periods ended September 30,
          1998, incorporated by reference in this prospectus,
          PricewaterhouseCoopers LLP reported that they have applied
          limited procedures in accordance with professional standards for
          a review of such information.  However, their separate reports
          dated May 5, 1998, August 4, 1998 and November 6 incorporated by
          reference herein, state that they did not audit and they do not
          express an opinion on that unaudited consolidated financial
          information.  PricewaterhouseCoopers LLP has not carried out any
          significant or additional audit tests beyond those which would
          have been necessary if their reports had not been included. 
          Accordingly, the degree of reliance on their reports on such
          information should be restricted in light of the limited nature
          of the review procedures applied.  PricewaterhouseCoopers LLP is
          not subject to the liability provisions of Section 11 of the
          Securities Act of 1933 for their report on the unaudited 
          consolidated financial information because that report is not 
          a "report" or a "part" of the registration statement prepared 
          or certified by PricewaterhouseCoopers LLP within the meaning 
          of sections 7 and 11 of the Securities Act of 1933.
    

                                    67
     <PAGE>

                                                           Appendix A


                                UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C.  20549

                                  FORM 10-K
                                 (Mark One)
         [X]    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                     THE SECURITIES EXCHANGE ACT OF 1934
                 For the fiscal year ended December 31, 1997
                                     OR
         [  ]   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                     THE SECURITIES EXCHANGE ACT OF 1934
          For the transition period from __________ to __________.



Commission     Registrant; State of Incorporation;        IRS Employer
File Number    Address; and Telephone Number              Identification Number
- -----------    -----------------------------              ---------------------
1-13739        UNISOURCE ENERGY CORPORATION               86-0786732
               (An Arizona Corporation)
               220 West Sixth Street
               Tucson, AZ  85701
               (520) 571-4000

1-5924         TUCSON ELECTRIC POWER COMPANY              86-0062700
               (An Arizona Corporation)
               220 West Sixth Street
               Tucson, AZ  85701
               (520) 571-4000


    Securities registered pursuant to Section 12(b) of the Act:

                                                    Name of Each Exchange
Registrant           Title of Each Class            on Which Registered
- ----------           -------------------            -------------------
UniSource Energy    Common Stock, no par value      New York Stock Exchange
Corporation                                         Pacific Stock Exchange

Tucson Electric     First Mortgage Bonds
Power Company        8-1/8%Series due 2001          New York Stock Exchange
                     7.55% Series due 2002          New York Stock Exchange
                     7.65% Series due 2003          New York Stock Exchange

    Securities registered pursuant to Section 12(g) of the Act:  None

     Indicate by check mark whether each registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to
such filing requirements for the past 90 days.
Yes   X    No 
    -----     -----

     Indicate by check mark if disclosure of delinquent filers pursuant to
Item 405 of Regulation S-K is not contained herein, and will not be
contained, to the best of each registrant's knowledge, in definitive proxy or
information statements incorporated by reference in Part III of this Form 10-
K or any amendment to this Form 10-K. [ X ]


     The aggregate market value of UniSource Energy Corporation voting Common
Stock held by non-affiliates of the registrant was $542,330,842.50 based on
the last reported sale price thereof on the consolidated tape on February 24,
1998.

	  At February 24, 1998, 32,138,124 shares of UniSource Energy Corporation
Common Stock, no par value (the only class of Common Stock), were
outstanding.

     UniSource Energy Corporation is the sole holder of the 32,162,167 shares
of the outstanding Common Stock of Tucson Electric Power Company.

     Documents incorporated by reference: Specified portions of UniSource
Energy Corporation's Proxy Statement relating to the 1998 Annual Meeting of
Shareholders are incorporated by reference into PART III.

<PAGE>								K-ii

This combined Form 10-K is separately filed by UniSource Energy Corporation
and Tucson Electric Power Company.  Information contained herein relating to
Tucson Electric Power Company is filed by UniSource Energy Corporation and
separately by Tucson Electric Power Company on its own behalf.  Tucson
Electric Power Company makes no representation as to information relating to
UniSource Energy Corporation or its subsidiaries, except as it may relate to
Tucson Electric Power Company.


                              TABLE OF CONTENTS
                                                                           Page
                                                                           ----
Definitions................................................................vii

                                 - PART I -

Item 1. -- Business
  The Company................................................................1
  Certain Risks..............................................................2
  Utility Operations
    Peak Demand and Customers................................................3
    Sales for Resale.........................................................4
    Competition..............................................................4
  Generating and Other Resources
    TEP Resources............................................................5
      Springerville Station..................................................5
      Irvington Station......................................................6
    SCE/TEP Power Exchange Agreement.........................................6
    Future Generating Resources..............................................6
    Other Purchases..........................................................7
  Rates and Regulation
    General..................................................................7
    Holding Company Order....................................................8
    1996 Rate Order..........................................................8
    Rate Proposal Before the ACC.............................................9
    ACC Rules on Retail Competition..........................................9
    FERC Orders on Wholesale Transmission Access.............................9
    Other Rate Matters.......................................................9
  Fuel Supply
    General.................................................................10
    Coal....................................................................10
    Springerville Coal Handling Facilities..................................11
    Gas.....................................................................12
  Water Supply..............................................................12
  Environmental Matters
    General.................................................................12
    Navajo Generating Station...............................................13
    San Juan Generating Station.............................................13
  Employees.................................................................13
  Energy-Related Ventures...................................................14
  TEP Utility Operating Statistics..........................................16

Item 2. -- Properties.......................................................17

<PAGE>								K-iii

                              TABLE OF CONTENTS
                                 (continued)
                                                                           Page
                                                                           ----
Item 3. -- Legal Proceedings
  Tax Assessments...........................................................18

Item 4. -- Submission of Matters to a Vote of Security Holders..............18

                                 - PART II -

Item 5. -- Market for Registrant's Common Equity and Related Stockholder
Matters
  TEP ......................................................................19
  UniSource Energy..........................................................19

Item 6. -- Selected Consolidated Financial Data.............................20

Item 7. -- Management's Discussion and Analysis of Financial Condition and
Results of Operations
  Overview..................................................................21
  Competition
    Wholesale...............................................................23
    Retail..................................................................23
  Investments in Energy-Related Ventures....................................25
  Results of Operations.....................................................26
    Results of Utility Operations
      Sales and Revenues....................................................26
      Operating Expenses....................................................27
      Other Income (Deductions).............................................27
      Interest Expense......................................................28
  Accounting for the Effects of Regulation..................................28
  Dividends on Common Stock
    UniSource Energy........................................................29
    TEP.....................................................................29
  Liquidity and Capital Resources
    Cash Flows
      UniSource Energy and TEP..............................................30
      TEP...................................................................31
      UniSource Energy......................................................31
    Financing Developments
      TEP Sale of Bonds.....................................................31
      TEP Bank Credit Agreements............................................32
      TEP Financing Authority...............................................32
      UniSource Energy......................................................32
    Tax Exempt Local Furnishing Bonds.......................................33
  Income Tax Position.......................................................33
  Restrictive Covenants
    General First Mortgage Covenants........................................34
    General Second Mortgage Covenants.......................................34
    Credit Agreement Covenants..............................................35
  Construction Expenditures.................................................35
  Impact of Year 2000 on Computer Systems and Applications..................35
  Safe Harbor for Forward-Looking Statements................................36

Item 8. -- Consolidated Financial Statements and Supplementary Data.........36
  Independent Auditors' Report..............................................37
  UniSource Energy Corporation
    Consolidated Statements of Income.......................................38
    Consolidated Statements of Cash Flows...................................39

<PAGE>								K-iv

                               TABLE OF CONTENTS
                                 (continued)
                                                                           Page
                                                                           ----
   Consolidated Balance Sheets .............................................40
   Consolidated Statements of Capitalization ...............................41
   Consolidated Statements of Changes in Stockholders' Equity (Deficit).....42
 Tucson Electric Power Company
   Consolidated Statements of Income .......................................43
   Consolidated Statements of Cash Flows ...................................44
   Consolidated Balance Sheets .............................................45
   Consolidated Statements of Capitalization ...............................46
   Consolidated Statements of Changes in Stockholders' Equity (Deficit).....47
 Notes to Consolidated Financial Statements
 Note 1. Nature of Operations and Summary of Significant Accounting Policies
   Nature of Operations ....................................................48
   Basis of Presentation ...................................................48
   Use of Estimates ........................................................48
   Regulation ..............................................................48
   Accounting for the Effects of Regulation
     Accounting Implications................................................49
     Potential Discontinuation of Application of FAS 71 in the Future.......50
     Recent Events That May Impact TEP's Application of FAS 71..............50
   TEP's Utility Plant .....................................................51
   Utility Plant Under Capital Leases ......................................51
   Springerville Unit 1 Allowance ..........................................52
   Deferred Springerville Common Facility Costs ............................52
   Utility Operating Revenues ..............................................52
   MSR Option Gain Regulatory Liability ....................................53
   Fuel Costs ..............................................................53
   Income Taxes ............................................................53
   Emission Allowances .....................................................53
   Fair Value of Financial Instruments .....................................54
   Reclassification ........................................................54
 Note 2. Rate Matters
   Shared Savings Proposal .................................................54
   Springerville Coal Contract Termination Fee .............................55
   1996 Rate Order .........................................................55
 Note 3. Income Taxes  .....................................................56
 Note 4. Consolidated Subsidiaries
   MEH Subsidiaries
     Nations Energy Corporation.............................................58
     Advanced Energy Technologies, Inc......................................59
     Millennium Energy Holdings, Inc........................................59
   TEP Subsidiaries ........................................................59
 Note 5. Long and Short-Term Debt and Capital Lease Obligations
   Long-Term Debt ..........................................................59
     TEP Sale of Bonds......................................................59
     TEP Bank Credit Agreements.............................................60
     TEP First and Second Mortgage..........................................60
     TEP Letters of Credit..................................................61
   TEP Capital Lease Obligations ...........................................61
   TEP Maturities and Sinking Fund Requirements ............................61
   Short-Term Debt .........................................................61
 Note 6. Dividend and Loan Restrictions
   Restrictive Covenants--Dividends
     UniSource Energy.......................................................62
     TEP....................................................................62

<PAGE>								K-v

                              TABLE OF CONTENTS
                                 (concluded)
                                                                           Page
                                                                           ----
    Restrictions on TEP's Ability to Make Loans and Advances................62
  Note 7. Commitments and Contingencies
    Utility Contractual Matters
      Fuel Purchase Commitments.............................................63
      Coal and Transportation Contracts - Reversal of Accrued Liabilities...63
    Commitments-Environmental Regulation....................................63
    Contingencies
      Ruling on Arizona Sales Tax Assessments - Coal Sales..................64
      Arizona Sales Tax Assessments - Leases................................65
      Income Tax Assessments................................................65
  Note 8. Jointly Owned Facilities..........................................66
  Note 9. Employee Benefits Plans
    Voluntary Severance Plan (VSP)..........................................66
    Pension Plans...........................................................66
    Postretirement Benefits Other Than Pensions.............................67
    Stock Option Plans......................................................68
  Note 10. Earnings Per Share(EPS)..........................................69
  Note 11. Quarterly Financial Data (unaudited).............................70
  Note 12. Supplemental Cash Flow Information...............................71

Item 9. -- Changes in and Disagreements with Accountants on Accounting and
Financial Disclosure........................................................72

                                - PART III -

Item 10. -- Directors and Executive Officers of the Registrants
  Directors.................................................................72
  Executive Officers........................................................72

Item 11. -- Executive Compensation..........................................75

Item 12. -- Security Ownership of Certain Beneficial Owners and Management
  General...................................................................75
  Security Ownership of Certain Beneficial Owners...........................75
  Security Ownership of Management..........................................75

Item 13. -- Certain Relationships and Related Transactions..................75


                                 - PART IV -

Item 14. -- Exhibits, Financial Statement Schedules, and Reports on Form 8-K76
  Signatures................................................................78
  Exhibit Index.............................................................81

<PAGE>								K-vi

                                 DEFINITIONS

The abbreviations and acronyms used in the 1997 Form 10-K are defined below:



ACC....................   Arizona Corporation Commission.
ACC Staff..............   Staff of the Arizona Corporation Commission.
ADEQ...................   Arizona Department of Environmental Quality.
AET....................   Advanced Energy Technologies, Inc., a wholly-owned
                            subsidiary of MEH Corporation.
AFDC...................   Allowance for Funds Used During Construction.
APS....................   Arizona Public Service Company.
Banks..................   Various banks with which TEP has credit 
                            relationships.
Brookland..............   Brookland Financial Corporation, a wholly-owned,
                            indirect subsidiary of  SRI, which formerly 
                            initiated and sold vehicle contract receivable
                            portfolios.
BTU....................   British Thermal Unit(s).
CAAA...................   Federal Clean Air Act Amendments.
Century................   Century Power Corporation, an indirect subsidiary of
                            the Catalyst Corporation and formerly known as 
                            Alamito Company.
Commission or SEC......   Securities and Exchange Commission.
Common Stock...........   The Company's common stock, without par value.
Company or UniSource
Energy.................   UniSource Energy Corporation.
Credit Agreement.......   Credit Agreement between TEP and the Banks, dated
                            as of December 30, 1997.
EITF...................   Emerging Issues Task Force of the Financial 
                            Accounting Standards Board.
Emission Allowance(s)..   An EPA issued allowance which permits emission of one
                            ton of sulfur dioxide. Such allowances can be sold.
EPA....................   The Environmental Protection Agency.
FAS 71.................   Statement of Financial Accounting Standards No. 71:
                            Accounting for theEffects of Certain Types of
                            Regulation.
FAS 101................   Statement of Financial Accounting Standards No. 101:
                            Regulated Enterprises - Accounting for the
                            Discontinuation of Application of     FAS 71.
FAS 121................   Statement of Financial Accounting Standards No. 121:
                            Accounting for the Impairment of Long-Lived Assets
                            and for Long-Lived Assets to Be Disposed Of.
FAS 123................   Statement of Financial Accounting Standards No. 123:
                            Accounting for Stock-Based Compensation.
FERC...................   Federal Energy Regulatory Commission.
Financial Restructuring   The comprehensive financial restructuring of TEP's
                            obligations to certain of TEP's creditors and lease
                            participants and Century and the Springerville Unit
                            1 Leases' participants and the reclassification of
                            all shares of the Preferred Stock into Common Stock
                            which occurred on December 15, 1992.
First Mortgage Bonds...   First mortgage bonds issued under the General First
                          Mortgage.
Four Corners...........   Four Corners Generating Station.
GAAP...................   Generally Accepted Accounting Principles.
General First Mortgage.   The Indenture, dated as of April 1, 1941, of Tucson
                            Gas, Electric Light and Power Company to The Chase
                            National Bank of the City of New York, as trustee,
                            as supplemented and amended.
General Second Mortgage   The Indenture, dated as of December 1, 1992, of
                            Tucson Electric Power Company to Bank of Montreal
                            Trust Company of the City of New York, as trustee,
                            as supplemented.

<PAGE>									K-vii

                                 DEFINITIONS
                                 (continued)

Global Solar...........   Global Solar Energy, L.L.C., a corporation in which a
                            50% interest is owned by AET.
Holding Company Act....   The Public Utility Holding Company Act of 1935, as
                            amended.
IBEW 1116..............   International Brotherhood of Electrical Workers labor
                            union, Local Chapter 1116.
IDBs...................   Industrial development revenue or pollution control
                            revenue bonds.
IRS....................   Internal Revenue Service.
Irvington..............   Irvington Generating Station.
Irvington Lease........   The leveraged lease arrangement relating to Irvington
                          Unit 4.
ITC....................   Investment tax credit.
kW.....................   Kilowatt(s).
kWh....................   Kilowatt-hour(s).
kV.....................   Kilovolt(s).
kVA....................   Kilovoltampere(s).
LOC....................   Letter of Credit.
MEH....................   MEH Corporation, a wholly-owned subsidiary of 
                            UniSource Energy.
Millennium.............   Millennium Energy Holdings, Inc., a wholly-owned
                            subsidiary of MEH.
MRA....................   Master restructuring agreement between TEP and the
                            Banks which included the Renewable Term Loan,
                            Revolving Credit, and certain replacement 
                            reimbursement agreements, which was terminated on
                            December 30, 1997.
MSR...................    Modesto, Santa Clara and Redding Public Power Agency.
MW....................    Megawatt(s).
MWh...................    Megawatt-hour(s).
Nations Energy........    Nations Energy Corporation, a wholly-owned subsidiary
                            of MEH.
Navajo................    Navajo Generating Station.
NEV...................    New Energy Ventures, L.L.C., a company in which a 50%
                            interest is owned by Millennium.
NOL...................    Net Operating Losses.
1981 Apache B Bonds...    $100 million principal amount of variable rate IDBs
                            which are secured by First Mortgage Bonds.
1996 Rate Order.......    ACC Rate Order concerning an increase in TEP's retail
                             base rates and the recovery of Springerville Unit
                             2 costs, issued March 29, 1996.
1994 Rate Order........   ACC Rate Order concerning an increase in TEP's retail
                             base rates and regulatory write-offs, issued 
                             January 11, 1994.
1991 Rate Order........   ACC Rate Order concerning an increase in TEP's retail
                             base rates, regulatory write-offs and rate and
                             accounting synchronization, issued October 11,
                             1991.
1989 Rate Order........   The ACC's October 24, 1989, Rate Order concerning 
                             TEP's 1988 application for a rate increase.
NTUA...................   Navajo Tribal Utility Authority.
PDEQ...................   Pima County Department of Environmental Quality.
Preferred Stock........   TEP's previously outstanding Cumulative Preferred 
                            Stock, $100 Par Value, and Cumulative Preferred
                            Stock (No Par)which were reclassified into Common
                            Stock pursuant to the Financial Restructuring.
PNM....................   Public Service Company of New Mexico.
Renewable Term Loan....   Credit facility that replaced the Term Loan pursuant
                            to the MRA Sixth Amendment, dated as of November 1,
                            1994, and effective March 7, 1995, and which was 
                            terminated December 30, 1997.
Revolving Credit......    $100 million revolving credit facility entered into
                            under the Credit Agreement between a syndicate of
                            certain of the Banks and TEP.
San Carlos............    San Carlos Resources Inc., a wholly-owned subsidiary
                            of TEP.
San Juan...............   San Juan Generating Station.
San Juan Unit 3........   Unit 3 of San Juan.

<PAGE>									K-viii

                                 DEFINITIONS
                                 (concluded)

SCE....................   Southern California Edison Company, a subsidiary of
                            Edison International.
Second Mortgage Bonds..   TEP's second mortgage bonds issued under the General
                            Second Mortgage.
Securities Exchange Act   The Securities Exchange Act of 1934, as
                            amended.
Shareholders...........   Holders of Common Stock.
SES....................   Southwest Energy Solutions, Inc., a wholly-owned
                            subsidiary of MEH.
Springerville..........   Springerville Generating Station.
Springerville Coal 
  Handling Facilities
  Leases...............   Leveraged lease arrangements relating to the coal
                            handling facilities serving Springerville.
Springerville Common
  Facilities...........   Facilities at Springerville used in common with
                            Springerville Unit 1 and Springerville Unit 2.
Springerville Common
  Facilities Leases....   Leveraged lease arrangements relating to an undivided
                            one-half interest in certain Springerville Common
                            Facilities.
Springerville Unit 1...   Unit 1 of the Springerville Generating Station.
Springerville Unit 1 
  Leases...............   Leveraged lease arrangement pursuant to
                            which Century leased Springerville Unit 1 and an
                            undivided one-half interest in certain 
                            Springerville Common Facilities and which has been
                            assumed by TEP.
Springerville Unit 2...   Unit 2 of the Springerville Generating Station.
SRI....................   Sierrita Resources Inc., a wholly-owned investment
                            subsidiary of TEP.
SRP....................   Salt River Project Agricultural Improvement and Power
                            District.
SSP....................   Shared Savings Proposal filed by TEP with the ACC
                            July 9, 1997 requesting a 1.1% annual retail rate
                            reduction.
SWPP...................   SWPP Investment Company, a wholly-owned subsidiary of
                            SES.
SWPPI..................   SWPP International, a wholly-owned subsidiary of SES.
TEP....................   Tucson Electric Power Company, the principal
                            subsidiary of UniSource Energy.
TRI....................   Tucson Resources Inc., a wholly-owned investment
                            subsidiary of TEP.
UniSource Energy.......   UniSource Energy Corporation.
Valencia...............   Valencia Energy Company, previously a wholly-owned
                            subsidiary of TEP, merged into TEP on May 31, 1996.
VSP....................   Voluntary Severance Plan offered to TEP employees and
                            implemented in May 1996.
Warrants...............  Warrants for purchase of TEP Common Stock which were
                            issued under the Financial Restructuring to the 
                            owner participants in the Springerville Unit 1
                            Leases.
WSCC...................  Western Systems Coordinating Council.

<PAGE>								K-ix

                                   PART I

      This Annual Report on Form 10-K contains forward-looking statements as
defined by the Private Securities Litigation Reform Act of 1995.  Forward-
looking statements should be read with the cautionary statements and
important factors included in this Form 10-K.  (See Item 7. - Management's
Discussion and Analysis of Financial Condition and Results of Operations,
Safe Harbor for Forward-Looking Statements.) Forward-looking statements
include statements concerning plans, objectives, goals, strategies, future
events or performance and underlying assumptions and other statements which
are other than statements of historical facts.  Such forward-looking
statements may be identified, without limitation, by the use of the words
"anticipates," "estimates," "expects," "intends," "plans," "predicts,"
"projects," and similar expressions.  The expectations, beliefs and
projections of UniSource Energy and TEP are expressed in good faith and are
believed by UniSource Energy and TEP to have a reasonable basis, including
without limitation, management's examination of historical operating trends,
data contained in the records of UniSource Energy and TEP and other data
available from third parties, but there can be no assurance that management's
expectations, beliefs or projections will result or be achieved or
accomplished.


ITEM 1. -- BUSINESS
- ------------------------------------------------------------------------------

  THE COMPANY
  -----------

      UniSource Energy Corporation (UniSource Energy or the Company) was
incorporated under the laws of the State of Arizona on March 8, 1995.
UniSource Energy is a holding company which owns all of the outstanding
common stock of Tucson Electric Power Company (TEP) and MEH Corporation
(MEH).  On January 1, 1998, TEP and UniSource Energy completed a statutory
share exchange, pursuant to which the outstanding common stock of TEP was
exchanged, on a share-for-share basis, for shares of UniSource Energy common
stock, no par value.  Following the share exchange, TEP transferred the stock
of its subsidiary, MEH, to UniSource Energy in exchange for a promissory note
in the approximate amount of $95 million.  (See Note 1 of Notes to
Consolidated Financial Statements).

      TEP was incorporated under the laws of the State of Arizona on December
16, 1963.  TEP is the successor by merger as of February 20, 1964, to a
Colorado corporation which was incorporated on January 25, 1902.  TEP is an
operating public utility engaged in the generation, purchase, transmission,
distribution and sale of electricity for customers in the City of Tucson and
the surrounding area and to wholesale customers.  TEP holds a franchise which
expires in 2001 to provide electric service to customers in the City of
Tucson.

      TEP owns all of the outstanding stock of San Carlos Resources Inc. (San
Carlos), which holds title to Springerville Unit 2.  TEP also owns all of the
outstanding stock of two non-energy related subsidiaries, Tucson Resources
Inc. (TRI) and Sierrita Resources Inc. (SRI).  In 1994, TRI and SRI
substantially completed the process of liquidating their respective
investments.

      MEH owns all of the outstanding common stock of (i) Nations Energy
Corporation (Nations Energy), which is active in the development of
independent power projects worldwide, (ii) Millennium Energy Holdings, Inc.
(Millennium), which holds a 50% interest in New Energy Ventures, L.L.C.
(NEV), a buyer's agent providing electric load aggregation and advisory
services to retail purchasers of electric energy, (iii) Advanced Energy
Technologies, Inc. (AET), which holds a 50% interest in Global Solar Energy,
L.L.C. (Global Solar), a manufacturer of thin-film photovoltaic cells, and
(iv) Southwest Energy Solutions, Inc. (SES), a provider of ancillary energy
services to electric consumers.  SES owns all of the outstanding common stock
of SWPP Investment Company (SWPP) and SWPP International, Ltd. (SWPPI), which
hold ownership interests in businesses engaged in the manufacture and sale of
concrete power poles.  See Energy-Related Ventures below for a discussion of
these subsidiaries.

      TEP is the principal subsidiary of UniSource Energy and accounts for
substantially all of its assets, revenues and net income.  The financial
condition and results of operations of TEP are currently the principal
factors affecting the financial condition and results of operations of
UniSource Energy.  Depending upon the nature of future investment
opportunities, UniSource Energy expects to make additional investments in MEH
and its subsidiaries, as well as other energy-related ventures.  Over time,
investments in energy-related ventures may have a material impact on
UniSource Energy's future cash flow and profitability.


  CERTAIN RISKS
  -------------

      For descriptions of certain factors affecting UniSource Energy and TEP,
including commitments and contingencies, which subject UniSource Energy and
TEP to continuing risks, see (i) Item 3., Legal Proceedings; (ii) Item 7.,
Management's Discussion and Analysis of Financial Condition and Results of
Operations, Overview and Safe Harbor for Forward-Looking Statements; and
(iii) Notes 1 and 7 of Notes to Consolidated Financial Statements, Nature of
Operations and Summary of Significant Accounting Policies, and Commitments
and Contingencies, respectively.


UTILITY OPERATIONS
- ------------------

    PEAK DEMAND AND CUSTOMERS

      Certain operating and system data related to TEP's utility operations
for each of the last five years are summarized in the following table:

  <TABLE>
  <CAPTION>
                                      1997    1996    1995    1994    1993
  Peak Demand                                           - MW -
  <S>                                 <C>     <C>     <C>     <C>     <C>
  Retail Customers-Net One Hour       1,659   1,619   1,617   1,585   1,449
  Other Utilities-Firm                  177     177     223     226     225
                                      -----   -----   -----   -----   ----- 
    Non-Coincident Peak Demand  (A)   1,836   1,796   1,840   1,811   1,674

  Total Generating Resources          1,992   1,952   1,952   1,952   1,952
  Other Resources (1)                   235     133     133      23      23
                                      -----   -----   -----   -----   -----
    Total TEP Resources (B)           2,227   2,085   2,085   1,975   1,975

  Total Reserves ((B) - (A))            391     289     245     164     301
                                      =====   =====   =====   =====   =====
  Reserve Margin (% of Non-Coincident
   Peak Demand)                         21%     16%     13%      9%     18%
                                      =====   =====   =====   =====   =====
<FN>
- ------------------------
(1) Other Resources include certain other capacity purchases and
    interruptible retail load.
</TABLE>

      The peak demand for TEP's retail service area occurs during the summer
months due to the space cooling requirements of its retail customers.  TEP
has experienced growth in peak demand of retail customers at an average
annual rate of approximately 3.5% for the past five years.  The load of its
mining customers comprised on average approximately 9.8% of the retail peak
demand for the past five years.

      In 1997, based on non-coincident peak demand, TEP's reserve margin
increased to 21% compared with 16% in the prior year.  This increase was due
to increases in the generating capability at Springerville and in the
percentage of retail load served on an interruptible basis.  TEP seeks to
maintain a reserve margin equal to its largest single hazard plus 5% of its
non-coincident peak demand in accordance with guidelines established by the
WSCC.  The targeted reserve requirement in 1997 was 304 MW, or 17% of non-
coincident peak demand.  It is expected that near-term growth in demand will
be met with existing resources and additional resources as discussed in
Future Generating Resources below.  Also, see TEP Resources below for a
discussion of TEP's electric generating resources.

      TEP's total number of retail customers grew at a moderate rate in 1997.
As of year-end, the number of customers increased by 1.9% compared to the
five-year annual average rate of 2.6%.  The growth rate in the number of
retail electric customers in TEP's service territory is expected to be
approximately 2.0% annually through the year 2002.  Retail peak demand in
TEP's service territory is expected to grow at an average annual rate of 2.7%
during the same period.  The average annual rate of growth of energy sales to
those retail customers is anticipated to be approximately 2.0% for the
remainder of the decade.  On average, residential, non-mining industrial, and
mining energy sales are expected to account for 35%, 28%, and 16%,
respectively, of the projected sales for the remainder of the decade.  The
expected growth in the number of customers, retail peak demand and retail
sales is based, in part, upon publicly available population and demographic
studies conducted by persons or entities unaffiliated with TEP.  Such
statements are also based upon various assumptions including, without
limitation, assumptions relating to weather, economic and competitive
conditions, including the assumption that TEP will incur no significant loss
of retail customers due to self-generation or retail wheeling.

      TEP has two principal mining customers.  In 1997, the sales to these
customers totaled approximately 16% of TEP's total retail energy sales, and
their contract demands totaled approximately 12% of the 1997 retail peak
demand.  Revenues from sales to mining customers accounted for approximately
9% of TEP's retail revenues in 1997 and 1996 and approximately 10% in 1995.
Sales to mining customers are expected to grow at a rate of approximately
1.6% over the next five years due to production facility expansions made in
late 1997.  However, sales to mining customers are dependent on a variety of
factors including, but not limited to, changes in supply and demand factors
in the international copper market and the economics of self-generation.

      TEP serves its two principal mining customers under reduced rate
contracts designed to induce them to continue to purchase electricity from
TEP rather than self-generate.  These contracts expire after the year 2000.
However, such contracts contain various provisions allowing the customers to
terminate partially or entirely, under certain circumstances, provided that
TEP is notified at least one and up to two years prior to such termination.
No termination notices have been received by TEP.  The ability to extend
contracts and to avoid early termination will depend on market conditions and
available alternatives.  TEP expects growth in retail sales to compensate for
such reduced rate contracts.

      Future markets and prices for fuel, as well as ACC decisions regarding
rate design and retail wheeling, will affect the sales of electric energy.
Such factors will affect customers' choice of source of supply, usage
characteristics, and may affect agreements between TEP and certain contract
customers (see Competition below).

    SALES FOR RESALE

      TEP makes sales for resale to others on both a firm and an
interruptible basis.  To the extent electric generating capacity is not being
utilized in the provision of energy to TEP's retail customers, such as during
off-peak periods, TEP markets this capacity and energy at wholesale.  Surplus
energy is sold from time to time under various power pooling arrangements.
TEP currently has contracts to sell firm capacity as follows:

<TABLE>
<CAPTION>
                               Minimum
                               Contract
   Company                    Demand MW    Contract Term
   -------                    ---------    -------------
  <S>                         <C>          <C>
  SRP                            100       June 1, 1991 - May 31, 2011
  NTUA (Phase I) (1)              60       July 1, 1997 - May 31, 1999
  NTUA (Phase II) (1)          40/50       June 1, 1999 - December 31, 2009
  City of Farmington (2)          25       November 1, 1997 - February 29, 2000
  <FN>
  ----------------------
(1) The agreement with NTUA was extended and restructured in 1997.  Phase I
    provides for a minimum contract demand of 60 MW during the contract period.
    During Phase II, TEP will provide 40 MW of firm power in the summer months
    (May - September) and 50 MW of firm power in the winter months (October -
    April).
(2) The City of Farmington, New Mexico will purchase up to 25 MW of firm
    power during the months of November, December, January and February.
</TABLE>

      TEP continues to actively market available excess energy in the short-
term markets (hourly up to one year) and, to the extent that it is economic,
commitments for available generating capacity and energy in the longer term
markets (one year and longer).  Competition to sell capacity is expected to
remain vigorous in the next few years as a result of surplus capacity in the
Southwestern United States, the restructuring of the electric utility
industry in California and other western states, and the presence of a highly
competitive spot market in the Western United States.  Regarding the
contracts described above, TEP cannot currently make any predictions about
the replacement or extension of such contracts in the future.

    COMPETITION

      See Item 7. -- Management's Discussion and Analysis of Financial
Condition and Results of Operations, Competition, for a discussion of
developments regarding competition in the industry at the wholesale as well
as at the retail level.


GENERATING AND OTHER RESOURCES
- ------------------------------

    TEP RESOURCES

     The total net generating capability owned or leased by
TEP at December 31, 1997, was 1,992 MW as set forth in the
following table:

<TABLE>
<CAPTION>
                                                            Net                
                                                           Capa-         
                                                           bili- Oper-   TEP'S
                        Unit                      Fuel      ly  ating   SHARE
Generating Source        No.   Location          Type      MW   Agent   %    MW
- -----------------       ----   --------          ----     ----  -----   -    --
<S>                     <C>  <C>                 <C>       <C>  <C>  <C>    <C>
Springerville Station   1    Springerville, AZ   Coal       380  TEP  100.0  380
Springerville Station   2    Springerville, AZ   Coal       380  TEP  100.0  380
San Juan Station        1    Farmington, NM      Coal       316  PNM  50.0   158
San Juan Station        2    Farmington, NM      Coal       312  PNM  50.0   156
Navajo Station          1    Page, AZ            Coal       750  SRP  7.5     56
Navajo Station          2    Page, AZ            Coal       750  SRP  7.5     56
Navajo Station          3    Page, AZ            Coal       750  SRP  7.5     56
Four Corners Station    4    Farmington, NM      Coal       784  APS  7.0     55
Four Corners Station    5    Farmington, NM      Coal       784  APS  7.0     55
Irvington Station       1    Tucson, AZ          Gas/Oil     81  TEP  100.0   81
Irvington Station       2    Tucson, AZ          Gas/Oil     81  TEP  100.0   81
Irvington Station       3     Tucson, AZ          Gas/Oil   104  TEP  100.0  104
Irvington Station       4     Tucson, AZ          Coal/Gas/ 156  TEP  100.0  156
                                                  Oil
Internal Combustion           Tucson, AZ          Gas/Oil   218  TEP  100.0  218
  Turbines                                                                   ---
    Total Company Capiacity (1)                                            1,992
                                                                           =====
<FN>
- -------------------
(1) Excludes 235 MW of additional resources, which consists
    of certain other capacity purchases and interruptible
    retail load.  At December 31, 1997, total owned capacity
    was 1,360 MW and leased capacity was 632 MW.  Internal
    combustion turbines with 96 MW of capacity are leased by
    TEP.  This lease expires in April 1998.  TEP is
    evaluating the purchase or continued leasing of such
    turbines, or alternatively, the purchase of firm
    capacity during summer months to meet targeted reserve
    requirements.
</TABLE>

        Springerville Station

      The Springerville Station consists of two coal-fired units.
Springerville Unit 1 began commercial operation in 1985 and is leased and
operated by TEP.  Springerville Unit 2 commenced commercial operation in June
1990 and is owned by San Carlos and operated by TEP.  Based on a review of
generating unit capabilities and changes in certain operating procedures, the
net capacity rating for each unit was increased from 360 MW to 380 MW as of
January 1, 1997.  Under emergency conditions, such units may be operated for
up to eight hours at a net capacity of 400 MW each.

      The primary terms of the Springerville Unit 1 Leases expire on January
1, 2015. At December 31, 1997, the capitalized lease asset related to
Springerville Unit 1, net of allowance and accumulated amortization, was $243
million, or $639 per kW based on a 380 MW capacity rating.  At the end of the
primary term, TEP may exercise fair market value purchase and renewal
options.  Annual lease payments for the Springerville Unit 1 Leases will
range from $33 million to $176 million, averaging approximately $78 million.
In 1997, the cash cost to TEP of Springerville Unit 1 capacity attributable
to rent obligations and other operation and maintenance expenses was $77
million, or an average of approximately $17 per kW per month based on a 380
MW capacity rating.  Such average cash cost is estimated to be approximately
$20 per kW per month (approximately $93 million per year) for the period from
January 1998 through December 2002 and will increase thereafter.  However,
due to timing differences between cash and accrued expenses, capacity costs
attributable to rent obligations and other operation and maintenance expenses
were accrued in TEP's financial statements during 1997 at an average of
approximately $21 per kW per month, or $94 million for the year, before
amortization of the regulatory allowance and related interest expense. The
estimated expense is expected to average approximately $21 per kW per month
(approximately $97 million per year) for the period from January 1998 through
December 2002 and is expected to increase slightly thereafter.  The 1991 Rate
Order allowed TEP to recover the cost of 360 MW of capacity for Springerville
Unit 1 (the then rated capacity for the unit), but limited such recovery to a
rate of $15 per kW per month (approximately $65 million per year).
Substantially all of the present value of disallowed Springerville Unit 1
costs was recorded as a loss in 1990, and as a result of the Financial
Restructuring, an additional loss was recorded in 1992.  The losses together
reflect the present value of the difference between projected costs and the
amount TEP is allowed to recover through the lease term ending January 1,
2015.  See Note 1 of Notes to Consolidated Financial Statements, Nature of
Operations and Summary of Significant Accounting Policies, Springerville Unit
1 Allowance.

      In December 1985, pursuant to the Springerville Common Facilities
Leases, TEP sold and leased back a 50% interest in the Springerville Common
Facilities.  The sales price of such facilities was $132 million.  At
December 31, 1997, the capitalized lease asset related to this interest in
the Springerville Common Facilities, net of accumulated amortization, was
$119 million.  The initial lease term for the Springerville Common Facilities
Leases expires in 2017 for one owner participant and 2021 for the other two
owner participants, subject to optional renewal periods and purchase options.
Annual lease payments under these leases vary with changes in the interest
rate on the underlying debt.  Such lease payments totaled approximately $12
million per year in 1995, 1996 and 1997.  Based on current interest rates,
average annual lease payments would total approximately $10 million.

      Including one-half of the cost of the Springerville Common Facilities
(but excluding the cost of coal-handling facilities at Springerville which
were included in recoverable fuel costs), the total initial cost of
Springerville Unit 2 was $838 million, or $2,328 per kW based on the previous
360 MW capacity rating.  In the 1991 Rate Order, the ACC disallowed recovery
from retail customers of $175 million of the book value of Springerville Unit
2.  TEP recorded a loss for such disallowance in 1991.  The net recoverable
cost, including the leased common facilities, is $663 million or $1,842 per
kW based on the previous 360 MW capacity rating.

        Irvington Station

      In January 1988, TEP began coal-fired commercial operation and entered
into a sale and leaseback arrangement for Irvington Unit 4 pursuant to the
Irvington Lease.  The unit was sold at its cost of $152 million.  At December
31, 1997, the capitalized lease asset related to Irvington Unit 4, net of
accumulated amortization, was $112 million.  This lease calls for annual
payments which range from approximately $11 million to $14 million and which
average approximately $13 million.  The lease term expires in 2011, but the
lease has optional renewal and purchase option provisions.

      Irvington Unit 4 (156 MW capability) has the flexibility to operate on
coal, gas or fuel oil.  Coal has been the primary fuel and natural gas the
secondary fuel.

    SCE/TEP POWER EXCHANGE AGREEMENT

      As part of a 1992 litigation settlement, TEP and SCE agreed to a ten-
year power exchange agreement.  Under the agreement, which began in May 1995,
SCE provides firm system capacity of 110 MW to TEP during summer months, for
which TEP pays an annual capacity charge of approximately $1 million
increasing annually after the year 2000 to a maximum of approximately $2
million annually.  TEP is entitled to schedule firm energy deliveries from
SCE during the summer (May 15 through September 15) of up to 36,300 MWh per
month, and is obligated to return to SCE on an interruptible basis the same
amount of energy the following winter season (November 1 through February
28).  The energy provided pursuant to the exchange is expensed based upon the
estimated cost of interruptible energy to be provided to SCE.  Pursuant to
the exchange agreement TEP received 136,508 MWh from SCE in 1997, of which
46,435 MWh was returned to SCE as of December 31, 1997.

    FUTURE GENERATING RESOURCES

      In December 1995, TEP filed an integrated resource plan pursuant to the
ACC's regulations governing resource planning.  In its filing TEP projected
the need for an additional 128 MW of peaking resources in 1998 and additional
peaking resources in the year 2002 and beyond.  No need for additional base
load generation facilities was forecast through the year 2010.  Subsequently,
TEP has delayed the need for peaking resources to 2001 through a review of
net generating capabilities at Springerville and an increase in the
percentage of retail load served now on an interruptible basis.  TEP's
reserve levels may be affected if the lease on certain gas turbines (96 MW)
expires in April 1998 without an agreement to purchase or continue leasing
such units.  In that event, TEP would need to buy firm capacity or increase
the percentage of retail load served on an interruptible basis in order to
meet targeted reserve requirements.

      In the 1995 integrated resource plan TEP projected that demand-side
management programs should reduce peak demand and, therefore, capacity
requirements, from what they would be without such programs by 60 MW by the
year 2000.  As part of the integrated resource plan, TEP has committed to
adding 5 MW of renewable generation resources by the year 2000.

      TEP's assessment of future generating resources is based upon the
premise of a continued requirement to serve customers in TEP's retail service
area.  The need for all of these future resources may be affected by the
ACC's rules on retail competition and TEP's ability to retain and attract
customers.  See Rates and Regulation, ACC Rules on Retail Competition below
and Item 7. - Management's Discussion and Analysis of Financial Condition and
Results of Operations, Competition.

    OTHER PURCHASES

      In addition to generating electricity at generating stations owned or
leased by TEP and the SCE/TEP Power Exchange, TEP participates in a number of
interchange agreements through which it can purchase additional electric
energy from other utilities.  The amount of energy purchased from other
utilities varies substantially from time to time depending on the demand for
such energy, the cost of purchased energy as compared to TEP's cost of
generating energy and the availability of such energy.  Through these same
agreements, TEP may also sell its surplus electric energy from time to time.

      TEP has transmission access to and/or power transaction arrangements
with over 180 electric systems or suppliers, including those in the southern
California markets.  TEP is a member of the Southwest Reserve Sharing Group,
which is comprised of a group of utilities serving customers in portions of
the southwestern United States.  The Southwest Reserve Sharing Group provides
emergency assistance and reserve sharing among its members in order to
enhance system reliability in the Desert Southwest region.  TEP is also a
member of the WSCC, a group of western electric systems and suppliers that
works cooperatively to assure the reliability of the region's interconnected
generation and transmission systems.  In addition, TEP is a member of the
Western Systems Power Pool, a voluntary power pooling arrangement designed to
achieve more efficient use of electric generation and transmission facilities
among its members.  See Competition for a discussion of possible changes in
transmission issues.


RATES AND REGULATION
- --------------------

    GENERAL

      TEP is subject to the jurisdiction of the ACC, which has authority,
among other things, to prescribe the classifications of accounts to be used
and the rates and charges to be made and collected from retail customers, and
to regulate the issuance of securities.  The ACC also has authority to
approve affiliate transactions and the establishment of holding companies and
subsidiaries under ACC promulgated Affiliated Interest Rules.  TEP is also
subject to regulation by FERC in certain respects, including the terms and
prices of sales to other utilities.

      Arizona law requires that TEP's rates for retail sales of electric
energy be determined by the ACC on a "cost of service" basis and be designed
to provide, after recovery of allowable operating expenses, an opportunity to
earn a reasonable rate of return on "fair value rate base".  Fair value rate
base is, generally, determined by the ACC by reference to the original cost
and the reproduction cost (in each case, net of depreciation) of utility
plant in service to the extent deemed used and useful, and to various
adjustments for deferred taxes and other items, plus a working capital
component.  Thus, over time, rate base is increased by additions to utility
plant in service and reduced by depreciation and retirements of utility plant
from service.  Both operating expenses and fair value rate base determination
are subject to the judgment of the ACC regarding prudence and recoverability.
To the extent that customer choice and retail wheeling are introduced into
TEP's retail service area in the future, retail rates may be changed to
reflect market levels which are different from traditional "cost of service"
rate levels.

      TEP's rates for wholesale sales of capacity and energy, generally, are
not permitted by FERC to exceed rates determined on a cost of service basis.
In the fall of 1997, TEP applied for and was granted a tariff to sell at
market based rates.  Rates have historically been set by the FERC in formal
rate application proceedings.  With respect to long-term firm sales, TEP's
wholesale rates are substantially below rates determined on a fully allocated
cost of service basis, but, in all instances, rates exceed the level
necessary to recover fuel and other variable costs.

      The ACC consists of three commissioners, each serving a six-year term.
One of the three is elected at each general election except when a vacancy
occurs prior to the expiration of a commissioner's term.  The present
commissioners are:

   James Irvin (Republican), Chairman, started his first term in 1997.  His
     term expires in 2003.
   Renz D. Jennings (Democrat), began a third term in 1993.  His term expires
     in 1999.
   Carl J. Kunasek (Republican), began his first term in 1995.  His term
     expires in 2001.

      Under a 1992 Arizona law, commissioners cannot serve consecutive terms
and can be elected to another term only after the passing of six years after
the end of their previous term as commissioners.

    HOLDING COMPANY ORDER

      On November 19, 1997, the ACC voted unanimously in favor of TEP's
Notice of Intent to Organize a Public Utility Holding Company, filed with the
ACC in April 1997.  On January 1, 1998, TEP and UniSource Energy completed a
statutory share exchange, pursuant to which the outstanding common stock of
TEP was exchanged, on a share-for-share basis, for shares of UniSource Energy
common stock, no par value.  As a result of the transaction, TEP became a
wholly-owned subsidiary of UniSource Energy.

      The ACC Order contained a number of conditions which will impact the
activities of UniSource Energy, TEP, and TEP's "sister companies" (i.e.,
other companies owned by UniSource Energy or its affiliates).  These include:

- -The holding company and its subsidiaries will only conduct business
  activities that are part of the electric energy business (as defined 
  therein).
- -For five years from the commencement of operations of the holding company,
  the following proceeds will be used to reduce TEP's debt or added to TEP's
  equity accounts: (i) 60% of any public equity issuance by UniSource Energy;
  and (ii) 2% of the net after-tax profits attributable to the holding 
  company's equity interest in TEP's sister companies.
- -Until such time as TEP's equity ratio equals 37.5% of total capital
  (excluding capital lease obligations), TEP may not pay dividends to 
  UniSource Energy in excess of 75% of its earnings.
- -TEP will target attainment of a 37.5% equity ratio in its capitalization
  structure for regulatory purposes by December 31, 2000.  If that capital
  structure goal is not attained, the ACC may set rates based on TEP's
  actual capital structure for regulatory purposes rather than the
  hypothetical 37.5% equity ratio currently reflected in rates.
- -The capitalization (debt and equity) of TEP's sister companies may not
  exceed 30% of TEP's capitalization unless otherwise approved by the ACC.

    1996 RATE ORDER

      In its order dated March 29, 1996, the ACC approved with certain
modifications a rate settlement agreement which was filed with the ACC on
March 8, 1996, and approved a one-time rate increase for TEP of 1.1%
(approximately $6.4 million annually), effective March 31, 1996.

      The 1996 Rate Order recognizes all of Springerville Unit 2 as used and
useful for ratemaking purposes so that TEP is presently recovering the
operating and capital costs associated with that portion of the generating
unit not previously included in rates.  See Note 2 of the Notes to
Consolidated Financial Statements, 1996 Rate Order. The 1996 Rate Order and
approved settlement agreement also establish a rate moratorium period for
TEP.  TEP has committed not to file for a change in base rates prior to
January 1, 2000, except for conditions or circumstances which constitute an
emergency, for the sharing of benefits with customers of cost containment
efforts where appropriate, or in the event TEP is acquired or merged with
another company.  By April 15 of each year TEP is required to provide the ACC
Staff with a report quantifying TEP's cost containment efforts.

      The rates approved in the 1996 Rate Order are based on a rate of return
of 6.59% on a fair value rate base of approximately $1.36 billion, or 7.72%
on an original cost rate base of approximately $1.16 billion.  The capital
structure adopted by the ACC for rate making purposes assumes 62.5% debt and
37.5% equity.  Consistent with previous ACC rate orders, TEP's leasehold
interest in utility plant was reflected in rates through an allowance for
rental expense, and was therefore not included in rate base.


    RATE PROPOSAL BEFORE THE ACC

      On July 9, 1997, TEP filed with the ACC a request for an annual rate
reduction of $6.8 million (or 1.1%) for retail customers.  This filing is in
the form of a Shared Savings Proposal (SSP) which promotes a sharing of
benefits with customers of cost containment efforts and the mitigation of
potential stranded costs associated with the introduction of retail electric
competition in Arizona.  In the SSP, TEP identified approximately $23 million
in annual pre-tax cost containment measures of which $20.8 million is
allocable to ACC jurisdictional operation.  These savings were realized
primarily from renegotiated fuel contracts and TEP's Voluntary Severance
Program, which reduced TEP's workforce by approximately 15%.  No date has
been set for formal consideration of the matter by the ACC.

      The proposed $6.8 million rate reduction represents a 50/50 sharing
with customers of $13.6 million of cost containment efforts.  TEP proposed
that additional savings be used by TEP to mitigate potential stranded costs
through accelerated amortization of retail excess capacity deferrals.  Retail
excess capacity deferrals represent those operating and capital costs
associated with Springerville Unit 2 capacity, which were deemed by the ACC
to not be recoverable in retail rates prior to the 1994 and 1996 Rate Orders.
Such retail excess capacity deferrals totaled $88.7 million and $93.6 million
at December 31, 1997 and 1996, respectively.  The proposed $7.2 million
increase in annual amortization expense for such retail excess capacity
deferrals would decrease the amortization period from 20 years to 5.6 years
as of December 1996.  The proposed increase in amortization expense would be
reflected in TEP's regulatory accounting records but would have no impact on
the expenses included in TEP's financial accounting statements.

    ACC RULES ON RETAIL COMPETITION

      In December 1996, the ACC voted to adopt certain rules on retail
electric competition.  See Item 7. -Management's Discussion of Financial
Condition and Results of Operations, Competition, Retail, for a discussion of
these rules.

    FERC ORDERS ON WHOLESALE TRANSMISSION ACCESS

      In April 1996, the FERC issued two orders pertaining to wholesale
transmission access.  See Item 7. -Management's Discussion of Financial
Condition and Results of Operations, Competition, Wholesale, for a discussion
of these orders.

    OTHER RATE MATTERS

      See Utility Operations, Peak Demand and Customers and Item 7. -
Management's Discussion of Financial Condition and Results of Operations,
Competition, Retail for a discussion of TEP's contracts and negotiations with
certain of its mining customers.

  FUEL SUPPLY
  -----------

    GENERAL

      TEP's principal fuel for electric generation is low-sulfur coal.  The
following table provides fuel cost information for the years 1997 through
1993:

<TABLE>
<CAPTION>
             Cost Per Million BTU Consumed     Percentage of Total BTU Consumed
            ---------------------------------  --------------------------------
             1997   1996   1995   1994   1993    1997   1996  1995  1994  1993
            -----  -----  -----  -----  -----    ----   ----  ----  ----  ----
<S>         <C>    <C>    <C>    <C>    <C>       <C>   <C>   <C>   <C>   <C>
Coal (A)    $1.66  $1.76  $1.71  $1.75  $1.77      97%   98%   99%   98%   99%
Gas          2.74   2.24   1.69   1.86   2.76       3     2     1     2     1
All Fuels    1.68   1.77   1.71   1.75   1.79     100%  100%  100%  100%  100%
<FN>
(A)  The average cost per ton of coal for each of the last
     five years (1997 - 1993) was $31.33, $32.95, $32.11,
     $33.12, and $33.11, respectively.
</TABLE>


    COAL

      TEP is the operator for the Springerville and Irvington generating
stations.  Their coal supplies are transported from northwestern New Mexico
by railroad.  In June 1997, TEP terminated its existing coal supply contract
for the Springerville Generating Station for a $50 million fee and entered
into a new contract with the same supplier, which expires in 2010, with an
option to extend the term for ten years thereafter.  See Note 2 and 7 of
Notes to Consolidated Financial Statements, Rate Matters, Springerville Coal
Contract Termination Fee and Commitments and Contingencies, Fuel Purchase
Commitments.  At Irvington, the contract termination date is the earlier of
2015 or the remaining life of Unit 4.  The Springerville and Irvington
contracts have various adjustment clauses which will affect the future cost
of coal delivered.  Coal reserves are expected to be sufficient to supply the
estimated requirements of Springerville and Irvington for their presently
estimated remaining lives.  The coal quantities for the San Juan Station, a
mine-mouth operation, are partially contracted through the year 2017. TEP
also participates in jointly owned generating facilities under long-term
contracts entered into by the operating agents.  Coal supplies are surface-
mined in northern Arizona and northwestern New Mexico.  The contract for coal
for Four Corners terminates in 2005.  The coal quantities under contract for
the Navajo mine-mouth coal fired generating station are expected to be
sufficient to supply the estimated requirements for its presently estimated
remaining life.  Additional information concerning the coal contracts is set
forth below:

<TABLE>
<CAPTION>
                                  Year   Average                         Coal
                                Contract Sulfur                          Ob-  
                      Coal        Term-   Con-  Cost Per Million BTU (A) tained
   Station          Supplier     inates   tent   1997   1996    1995    From(B)
   -------          --------     ------   ----   ----   ----    ----    -------
<S>                <C>           <C>     <C>    <C>    <C>    <C>     <C>
Four Corners       BHP Minerals 
Corners            International, 
                   Inc.            2005    0.8%  $0.95  $1.34  $1.15  Navajo 
                                                                      Indian
                                                                      Tribe
San Juan           San Juan Coal 
                   Company         2017    0.8%  $1.74  $1.77  $1.76  Federal 
                                                                      and State
                                                                      Agencies
Navajo             Peabody Western  
                   Coal Company    2011    0.6%  $1.13  $1.18  $1.12  Navajo  
                                                                      and Hopi
                                                                      Indian 
                                                                      Tribes
Springerville (C)  Peabody Coalsales 
                   Company         2010(D) 0.7%  $1.77  $1.84  $1.73  Lee Ranch
                                                                      Coal
                                                                      Company
Irvington          The Pittsburg & 
                   Midway Coal
                   Mining Company  2015    0.4%  $1.99  $2.21  $2.20  Navajo 
                                                                      Indian
                                                                      Tribe 
                                                                      and 
                                                                      Federal
                                                                      and 
                                                                      State 
                                                                      Agencies
<FN>
- ----------------
(A) Includes costs of transportation and handling in addition to the purchase
    price under the basic contract.
(B) Substantially all of the suppliers' leases extend at least as long as
    coal is being mined in economic quantities.
(C) Coal handling facilities costs included in Springerville fuel costs above
    were $0.23 per million BTU in 1997, $0.25 per million BTU in 1996, and
    $0.34 per million BTU in 1995.
(D) The coal contract for Springerville expires in 2010 with an option to
    extend the term for ten years thereafter.  During the extension term, the
    coal supplier has the right of first refusal to match competing offers for
    a portion of the Springerville coal requirements.
</TABLE>

      The Irvington coal supply contract contains take-or-pay provisions,
whereby TEP is required to make certain minimum payments for a base amount of
tonnage not taken at a rate of 50% of the contract price.  Although TEP's
present fuel requirements are generally in excess of the stated take-or-pay
minimum amounts, from time to time TEP has purchased coal and natural gas in
the spot market or switched fuel burn from one generating station to another
in order to achieve lower overall fuel costs, while incurring take-or-pay
minimum charges.  During 1996 TEP purchased coal for the Irvington Station
from an alternative supplier, resulting in a $4.4 million take-or-pay charge,
but reducing fuel costs at Irvington.  TEP incurred no take-or-pay charges in
1997 or 1995.

      TEP intends to continue to actively negotiate its fuel and
transportation contracts in 1998 and in the future.

    SPRINGERVILLE COAL HANDLING FACILITIES

      Pursuant to the Springerville Coal Handling Facilities Leases, TEP is
the lessee of the coal-handling facilities at Springerville under a capital
lease with a remaining initial lease term of approximately 18 years with
incremental extensions of five to six years depending on certain criteria at
the date of each extension.  At December 31, 1997, the capitalized lease
asset related to the Springerville coal-handling facilities, net of
accumulated amortization, was $174 million.  Annual rental payments range
from approximately $10 million to $28 million but average $21 million.

      TEP allocates portions of its Springerville Coal Handling Facility
Lease costs to deferred expense for future recovery through rates.  See Note
1 of Notes to Consolidated Financial Statements, Nature of Operations and
Summary of Significant Accounting Policies, for a description of the
accounting for Springerville coal handling facility lease costs.
Approximately half of the expenses of the coal handling facilities, including
lease costs and other operating and maintenance expenses, are charged to fuel
expense and amounted to $13 million, $15 million, and $17 million in 1997,
1996 and 1995, respectively.

    GAS

      In 1997, TEP purchased a small amount of natural gas for power
generation (approximately 3% of total TEP generation) from El Paso Gas
Marketing, Equitable Resources Marketing, Natural Gas Clearinghouse, and Penn
Union Energy Services.  During 1997, TEP received natural gas sufficient to
meet all of its gas fuel requirements.

  WATER SUPPLY
  ------------

      TEP believes there will be sufficient water to supply the requirements
of existing and planned units of all electric generating stations in which
TEP has an interest for their estimated lives.  A federal contract for water
at San Juan expires in 2005, and negotiations for extension are being
overseen by PNM.

  ENVIRONMENTAL MATTERS
  ---------------------

    GENERAL

      TEP must operate its generating stations in accordance with numerous
local, state and federal guidelines, laws, regulations and ordinances
designed to preserve and enhance environmental integrity.  Resource
extraction and waste disposal operations are also regulated for environmental
compatibility.  Generally, air quality and water quality are under the most
stringent regulations.  Land use is also regulated.  TEP believes that all of
its facilities are operating in compliance with requirements currently in
effect.

      Various federal, state and local laws, regulations and requirements for
air quality control continue to have a significant impact on TEP.  Due to the
proximity of national parks, monuments, wilderness areas and Indian
reservations and relatively high air quality at such locations, the principal
generating units of TEP could be subject to control standards of best
available control technology (BACT) and best available retrofit technology
(BART).  Such standards relate to the "prevention of significant
deterioration" of visibility and tall stack limitation rules.

      Arizona and New Mexico have adopted emission regulations restricting
the emissions from both existing and future coal, oil and gas-fired plants.
These regulations are in some instances more stringent than those adopted by
the EPA.

      TEP expended $19 million during 1997 for environmental construction
costs in maintaining compliance with environmental requirements.  TEP
estimates that it will make expenditures for environmental facilities of
approximately $15 million in 1998 and $7 million in 1999.  These amounts
include TEP's estimated share of expenditures for improvements to the
pollution control facilities at the Navajo and San Juan stations, as
discussed below.  TEP believes that all existing generating facilities are or
will be in compliance with all existing or expected environmental regulations
except as described below.

      In the fall of 1990, Congress adopted certain Federal Clean Air Act
Amendments (CAAA) with respect to facility permitting and to reductions in
sulfur dioxide and nitrogen oxide emissions which will affect TEP's
operations.  The required reductions of sulfur dioxide emissions will be
implemented in two phases which are effective in 1995 and 2000, respectively.
TEP is not affected by the requirements for sulfur dioxide and nitrogen oxide
emissions which went into effect in 1995 (Phase I), but is subject to the
requirements that go into effect January 1, 2000 (Phase II).  All of TEP's
generating facilities (except internal combustion turbines) are subject to
the Phase II sulfur dioxide and nitrogen oxide requirements.  The estimated
cost of compliance with these requirements is approximately $1 million to $2
million, scheduled to be incurred between 1998 and 2000.

      In 1993 affected TEP generating units were allocated sulfur dioxide
Emission Allowances based on past operational history.  Beginning in the year
2000, Phase II generating station units must hold Emission Allowances (by
January 30 of the year following the compliance year) equal to the level of
emissions in the compliance year, or face penalties and a requirement to
offset excess emissions in future years.  An analysis of the Emission
Allowances that were allocated to TEP shows that TEP may not have sufficient
allowances to permit normal plant operation and be in compliance with the
sulfur dioxide regulations once the Phase II requirements become effective
due to the increase in the rated capacity at Springerville.  See Generating
and Other Resources, TEP Resources, Springerville Station.  To the extent
that TEP does not have sufficient allowances, due to increased energy output
at Springerville or other factors, TEP would have to purchase additional
Emission Allowances.  Based upon current estimates of additional required
Emission Allowances and the current market price of such allowances, TEP
believes that it will be able to acquire additional required allowances and
that such purchases will not have a material effect on TEP.

      Title V of the CAAA requires that more complex air quality permits be
applied for and obtained for all of TEP's generating facilities.
Applications have been filed for all such facilities and TEP does not
anticipate (based on information and belief as to jointly owned facilities
operated by others) any material problems in obtaining the required permits.
TEP is required to pay an annual emission-based fee with respect to each
generating facility subject to a Title V permit.  The aggregate fees payable
by TEP in 1998 with respect to all such facilities for emissions in 1996 are
not expected to exceed $1 million, and should remain approximately the same
in 1999.

      The CAAA also require multi-year studies of visibility impairment in
specified areas and studies of hazardous air pollutants which relate to the
necessity of future regulations of electric utility generating units.  Since
these activities involve the gathering of information not currently
available, TEP cannot predict the outcome of these studies.

      As a result of recent and possible future changes in federal and state
environmental laws, regulations and permit requirements, because of and in
addition to the CAAA, TEP may incur additional costs for the purchase or
upgrading of pollution control emission monitoring equipment on existing
electric generating facilities and may experience a reduction in operating
efficiency.  There may be a need for variances from certain environmental
standards and operating permit conditions until required equipment and
processes for control, handling and disposal of emissions are operational and
reliable.  Failure to comply with any EPA or state compliance requirements
may result in substantial penalties or fines which are provided for by law
and which in some cases are mandatory.

    NAVAJO GENERATING STATION

      In 1991, the EPA adopted a rule for the reduction of Navajo's sulfur
dioxide emissions on an annual averaging basis by 90% to address visibility
impairment at Grand Canyon National Park.  TEP estimates that its share of
the required capital expenditures remaining as of December 31, 1997 relating
to the rule's implementation will be approximately $8 million, including
AFDC, through 2000.


    SAN JUAN GENERATING STATION

      In order to improve the cost efficiency of sulfur dioxide removal at
the station, the existing removal process is being replaced with a new
process at an estimated cost to TEP of $20 million, including AFDC, during
the period 1997 through 1999.  TEP estimates that its share of the required
capital expenditures remaining as of December 31, 1997 relating to this
process improvement will be approximately $11 million, including AFDC,
through 1999.


  EMPLOYEES
  ---------

      TEP and its subsidiaries had a combined total of 1,190 employees as of
December 31, 1997.  Included in this total are 22 employees of subsidiaries
wholly-owned by MEH, which subsidiaries were transferred from TEP to
UniSource Energy on January 1, 1998.

      The IBEW 1116, which represents about 60% of the total employees, and
TEP are parties to a two-year collective bargaining agreement for the period
from December 1, 1996 through November 30, 1998.  The collective bargaining
agreement, which was negotiated with and approved by the IBEW 1116 in
December 1996 for classified employees in Tucson, includes annual wage
increases of 3.2% in December 1996 and 3.0% in December 1997, as well as
modifications to the pension plan.  This same agreement was also approved by
the IBEW 1116 in January 1997 for classified employees at the Springerville
location.  In April 1997 the classified employees agreed to put 1.6% (or 50%)
of the December 1996 negotiated across-the-board wage increase "at risk"
under the terms of the Classified Incentive Program (CIP).  The CIP provides
for additional incentive payments based on attainment of individual,
departmental and corporate goals.  The employee receives the "at risk"
portion of the wage increase only if individual goals are attained.  In 1998
IBEW 1116 employees received additional incentive payments for achieving
these goals in 1997.  This program will continue in 1998 with 1.5% of the
December 1997 salary increase "at risk".

  ENERGY-RELATED VENTURES
  -----------------------

      MEH Corporation (MEH) is a wholly-owned subsidiary of UniSource Energy.
MEH owns all of the outstanding common stock of four subsidiaries (described
below) established for the purpose of pursuing various unregulated energy-
related investment opportunities.

      Nations Energy Corporation was established in 1995 for the purpose of
developing and investing in independent power projects in the global energy
markets.  In September 1995, Nations Energy and Trigen Energy Corporation
formed a limited partnership which purchased Coors Brewing Company's energy
production assets.  Nations Energy has a 49% interest in such partnership.
In 1996, Nations Energy became actively involved in the development of the
ECKG power project near the City of Kladno, Czech Republic, for which it has
a 26.7% ownership option exercisable in May 1998.  This project involves the
upgrading and expansion of an existing coal-fired thermal and electric
generating plant.  In addition to these projects, Nations Energy is actively
involved in the development of other investment opportunities in the global
energy markets.

      Millennium Energy Holdings, Inc. holds a 50% interest in New Energy
Ventures, L.L.C.  Millennium exercised its option to acquire its 50%
ownership interest in NEV effective September 1, 1997.  NEV was organized in
1995 for the purpose of acting as a buyer's agent in procuring electric
energy, performing energy services, engaging in power marketing and trading
and other energy related activities.  Its principal focus is in California
and the Northeastern region of the United States.  As of December 31, 1997,
NEV had signed contracts to provide advisory and load aggregation services
for customers in California having a combined electrical demand of 800 MW,
which will become effective when the California market is subject to open
access.  NEV obtains its energy supply through purchase power contracts and
spot market purchases.  Also, in January 1998, NEV announced the formation of
a strategic alliance with Allied Signal, Inc. to become the distributor of
TurboGeneratorTM Power Systems in 14 western states.  The TurboGeneratorTM is
a lightweight microturbine (for applications requiring 40 kW-500 kW) which
can be used for distributed generation, off-grid power generation, portable
power, and cogeneration, and provides NEV with additional capabilities to
provide energy options to its customer base.

      Advanced Energy Technologies, Inc. was established in May 1996.  This
wholly-owned subsidiary of MEH develops renewable energy and distributed
generation technologies.  In 1996 AET acquired a 50% ownership interest in
Global Solar Energy, L.L.C., an Arizona corporation which develops and
manufactures flexible thin-film photovoltaic cells.  Commercial production of
photovoltaic cells is scheduled to commence in 1998.  Global Solar's
manufacturing facility is expected to initially produce at a rate of up to
1,500 kW of solar generated electric capacity, or approximately 255,000
square-feet of photovoltaic film, per year.

      Southwest Energy Solutions, Inc. was established in January 1997.  SES
provides a variety of ancillary energy services to retail electric consumers
including dusk to dawn lighting, service restoration, and design, engineering
and construction services.  SES owns all of the outstanding common stock of
SWPP and SWPPI.  Established in 1996, SWPP entered into a joint venture with
three Mexican investment partners in July 1997 to form Sentinel Concrete
Utility Poles, a domestic distributor of concrete power poles and related
products.  SWPP holds a 50% ownership interest in this joint venture.  SWPPI
holds a 50% ownership interest in Productos de Concretos Internacionales,
C.V., a manufacturer and international distributor of concrete power poles
and related products.

      In addition to the activities currently underway or planned for each of
these subsidiaries, UniSource Energy continues to evaluate potential
investment opportunities in other energy-related markets.

      In the Consolidated Balance Sheet and Consolidated Statement of Income
for UniSource Energy as of December 31, 1997, investments in the energy-
related ventures of MEH and its subsidiaries (included in Investments and
Other Property) comprised less than 1% of total assets, while the net loss
related to such investments reduced consolidated net income by 6.5% in 1997.
Depending on the nature of future investment opportunities, UniSource Energy
expects to make additional investments in these subsidiaries and in other
energy-related ventures.  Over time, investments in energy-related ventures
may have a material impact on UniSource Energy's future cash flow and
profitability.  Pursuant to the ACC order issued in November 1997 allowing
the formation of a holding company, the capitalization (debt and equity) of
the subsidiaries which are the sister companies to TEP may not exceed 30% of
TEP's capitalization unless otherwise approved by the ACC.




<TABLE>
TEP's UTILITY OPERATING STATISTICS

                                         For Years Ended December 31,
                            1997        1996       1995        1994      1993

<S>                    <C>        <C>         <C>         <C>         <C>
Generation and Purchased 
  Power-kWh (000)
  Remote Generation 
    (Coal)               9,694,152   9,784,918  8,716,513   9,341,342  8,986,350
  Local Generation 
    (Oil, Gas & Coal)      806,819     723,232    500,958     825,385    615,100
  Purchased Power        1,222,970     925,394    692,769     501,269    335,897

    Total Generation and  
      Purchased Power   11,723,941  11,433,544  9,910,240  10,667,996  9,937,347
  Less Losses and 
    Company Use            824,072     776,436    661,901     639,278    591,412

    Total Energy Sold   10,899,869  10,657,108  9,248,339  10,028,718  9,345,935


Sales-kWh (000)
  Residential            2,608,515   2,516,282  2,330,191   2,374,868  2,223,479
  Commercial             1,316,360   1,306,826  1,280,752   1,281,050  1,242,367
  Large Users            2,115,332   2,080,763  1,979,317   1,948,331  1,832,278
  Mining                 1,193,094   1,164,140  1,147,281   1,135,424  1,090,061
  Public Authorities       237,113     228,800    204,746     183,525    159,310

    Total - Retail 
      Customer           7,470,414   7,296,811  6,942,287   6,923,198  6,547,495
  Sales for Resale       3,429,455   3,360,297  2,306,052   3,105,520  2,798,440

    Total               10,899,869  10,657,108  9,248,339  10,028,718  9,345,935


Operating Revenues (000)
  Residential             $246,251    $237,569   $218,208    $220,341   $197,368
  Commercial               146,377     143,623    138,294     137,508    128,688
  Large Users              158,266     154,547    146,409     144,677    131,858
  Mining                    53,231      56,240     54,948      53,821     53,510
  Public Authorities        17,531      16,949     14,952      13,435     11,464
  Other                      2,565       2,636      2,114       1,651      1,925

    Total - Retail 
      Customers            624,221     611,564    574,925     571,433    524,813
  Amortization of MSR 
    Option Gain
    Regulatory Liability     8,105      20,053     20,053      20,053      6,053
  Sales for Resale          97,567      84,256     75,591      99,987     93,273

    Total                 $729,893    $715,873   $670,569    $691,473   $624,139


Customers (End of Period)
  Residential              287,857     282,060    273,976     266,060    258,168
  Commercial                28,309      28,199     27,858      27,360     26,838
  Large Users                  664         626        620         588        551
  Mining                         4           4          4           4          4
  Public Authorities            61          61         59          59         59

    Total Retail 
      Customers            316,895     310,950    302,517     294,071    285,620


Average Revenue per kWh Sold (cents)
  Residential                  9.4         9.4        9.4         9.3        8.9
  Commercial                  11.1        11.0       10.8        10.7       10.4
  Large Users and Mining       6.4         6.5        6.4         6.4        6.3
    Total Retail Customers     8.4         8.4        8.3         8.3        8.0

Average Revenue per  
  Residential Customer        $865        $854       $809        $841       $776
Average kWh Sales per  
  Residential Customer       9,159       9,050      8,641       9,066      8,739
</TABLE>




ITEM 2. -- PROPERTIES
- -------------------------------------------------------------------------------

      TEP's transmission facilities are located within the states of Arizona
and New Mexico.  The primary purpose of TEP's transmission facilities is to
transmit electricity from TEP's remote electric generating stations at Four
Corners, Navajo, San Juan and Springerville to the Tucson area for use by
TEP's retail customers (see Item 1, Business, Generating and Other Resources
for the location of TEP's plants).  The transmission system is directly
interconnected with systems operated by the following utilities:

             Utility                                 Location
             -------                                 --------
             Arizona Public Service Co.              Arizona
             Arizona Electric Power Cooperative      Arizona
             El Paso Electric Co.                    New Mexico, Texas
             Public Service Co. of New Mexico        New Mexico
             Salt River Project                      Arizona

      TEP has arrangements with approximately 180 companies, including the
five listed above, which are utilized to interchange capacity and energy.

      As of December 31, 1997, TEP owned or participated in an overhead
electric transmission and distribution system consisting of 511 circuit-miles
of 500 kV lines, 1,122 circuit-miles of 345 kV lines, 350 circuit-miles of
138 kV lines, 440 circuit-miles of 46 kV lines and 9,643 circuit-miles of
lower voltage primary lines.  The underground electric distribution system
was comprised of 5,071 cable-miles.  Approximately 24% of the poles upon
which the lower voltage lines are located are not owned by TEP.  Electric
substation capacity associated with the above-described electric system
consisted of 173 substations with a total installed transformer capacity of
5,329,605 kVA.

      The electric generating stations (except as noted below), TEP's general
office building, operating headquarters and the warehouse and service center
are located on land owned by TEP in fee.  The electric distribution and
transmission facilities owned by TEP are located (1) on property owned in fee
by TEP, (2) under or over streets, alleys, highways and other public places,
the public domain and national forests and state lands under franchises,
easements or other rights which, with some exceptions, are subject to
termination, (3) under or over private property by virtue of easements
obtained for the most part from the record holder of title, and (4) over
Indian reservations under grant of easement by the Secretary of Interior or
lease by Indian tribes.  In most instances, no examination has been made by
counsel for TEP as to the title to easements of TEP from the record holder or
to the property over which the easement has been granted, or as to possible
liens, encumbrances, reservations or restrictions thereon.  Therefore, some
of the easements and the property over which the easements have been secured
may be subject to title defects and encumbered by, or subject to, mortgages
and liens existing at the time the easements were acquired.

      Most of the land parcels comprising Springerville are held by TEP under
a long-term surface ownership agreement with the State of Arizona.

      Four Corners and Navajo are located on properties held under easements
from the United States and under leases from the Navajo Indian Tribe.  TEP,
individually and in conjunction with PNM in connection with San Juan, has
acquired easements and leases for transmission lines and a water diversion
facility located on the Navajo Indian Reservation.  TEP has also acquired
easements for transmission facilities, related to San Juan and Navajo, across
the Zuni, Navajo and Tohono O'odham Indian Reservations.

      TEP's rights under the various easements and leases described under
this heading may be subject to possible defects (including conflicting grants
or encumbrances not ascertainable because of absence of or inadequacies in
the recording laws or the record systems of the Bureau of Indian Affairs and
the Indian tribes, the possible inability of TEP to resort to legal process
to enforce its rights against certain possible adverse claimants and the
Indian tribes without Congressional consent, the possible failure or
inability of the Indian tribes to protect TEP's interests in, and use and
occupancy of, these facilities from interference or interruption, and, in the
case of the leases, possible impairment or termination under certain
circumstances by Congress, the Secretary of the Interior or certain possible
adverse claimants).  However, these possible defects have not and are not
expected to materially interfere with TEP's interest in and operation of its
facilities.

      TEP leases under separate sale and leaseback arrangements the following
facilities (which do not include land): (i) the coal handling facilities at
Springerville; (ii) a 50% undivided interest in the Springerville Common
Facilities; (iii) Springerville Unit 1 and the remaining 50% undivided
interest in Springerville Common Facilities; (iv) Irvington Unit 4 and
related common facilities; and (v) three internal combustion turbines having
a combined net generating capability of 96 MW.  See Note 5 of Notes to
Consolidated Financial Statements, Long and Short-Term Debt and Capital Lease
Obligations for additional information on TEP's capital lease obligations.

      Substantially all of the utility assets owned by TEP are subject to the
lien of the General First Mortgage and the General Second Mortgage.
Springerville Unit 2, legal title to which is held by San Carlos, is not
subject to such liens.


ITEM 3. -- LEGAL PROCEEDINGS
- -------------------------------------------------------------------------------

  TAX ASSESSMENTS
  ---------------

      See Contingencies  in Note 7 of Notes to Consolidated Financial
Statements.


ITEM 4. -- SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
- -------------------------------------------------------------------------------
 
      Not Applicable.




                                   PART II

ITEM 5. -- MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER
MATTERS
- -------------------------------------------------------------------------------

      On January 1, 1998, TEP and UniSource Energy completed a statutory
share exchange, pursuant to which the outstanding common stock of TEP was
exchanged, on a share-for-share basis, for shares of UniSource Energy common
stock.

      TEP
      ---

      Prior to the share exchange described above, the common stock of TEP
was traded on the New York and Pacific Stock Exchanges.  The following table
sets forth, for the periods indicated, the high and low sale prices of TEP's
common stock on the consolidated tape as reported by Dow Jones.  Sale prices
prior to May 20, 1996 have been adjusted to reflect the one-for-five reverse
split of TEP's common stock in May 1996.  No dividends were paid on common
stock during such periods.

<TABLE>
<CAPTION>
                                     Market Price per
                                      Share of Common
                    Quarter                Stock
                    -------         ------------------
                                      High       Low
                                      ----       ---
                    <S>             <C>       <C>
                    1997                      
                    ----
                    First          $16.75    $14.00
                    Second          15.38     13.88
                    Third           18.25     14.38
                    Fourth          18.19     16.19
                                              
                    1996                      
                    ----
                    First          $16.88    $14.38
                    Second          15.00     13.13
                    Third           17.81     12.25
                    Fourth          20.75     16.25
                                              
                                              
</TABLE>

      On January 1, 1998, TEP became a wholly-owned subsidiary of UniSource
Energy.  As such, TEP's common stock is no longer publicly traded.

      UniSource Energy
      ----------------

      The common stock of UniSource Energy is listed on the New York and
Pacific Stock Exchanges, and began trading under the symbol of UNS on January
2, 1998.  The closing price of the common stock on the consolidated tape on
February 24, 1998 was $16.875.  At February 24, 1998, there were 28,204
shareholders of record of the common stock.

      See Item 7. - Management's Discussion and Analysis of Financial
Condition and Results of Operations, Dividends on Common Stock.



ITEM 6. - SELECTED CONSOLIDATED FINANCIAL DATA - UNISOURCE ENERGY AND TEP
- -------------------------------------------------------------------------------

<TABLE>

                         1997        1996        1995        1994        1993
                         (In thousands - except per share data and ratios)
<S>                  <C>         <C>         <C>         <C>          <C>
Summary of Operations

Operating Revenues     $729,893    $715,873    $670,569    $691,473    $624,139
Recognition of Prior 
  Period NOLs - 
  Part of
  Income Taxes           43,443      88,638      23,282           -           -
Income (Loss) from 
 Continuing Operations   83,572     120,852      54,905      20,740    (21,816)

Income (Loss) from 
 Continuing Operations
  Per Average Share 
   of Common Stock        $2.60       $3.76       $1.71       $0.65     $(0.68)

Shares of Common 
 Stock Outstanding
  Average                32,138      32,136      32,138      32,145      32,109
  End of Year            32,139      32,139      32,138      32,145      32,145

Book Value per Share      $6.75       $4.15       $0.39     ($1.31)     ($1.96)



Financial Position

Total Utility Plant 
  - Net              $1,935,513  $1,953,904  $1,978,126  $2,007,422  $2,029,764
Investments and 
  Other Property         78,772      69,289      52,116      12,992      62,850
Total Assets          2,634,409   2,568,541   2,563,461   2,730,229   2,742,932

Long-Term Debt        1,215,120   1,223,025   1,207,460   1,381,935   1,416,352
Capital Lease 
  Obligations           890,257     895,867     897,958     922,735     927,201
Common Stock Equity 
  (Deficit)             216,878     133,288      12,488    (42,233)    (62,973)
Total Capitalization  2,322,255   2,252,180   2,117,906   2,262,437   2,280,580

Selected Cash Flow Data

Net Cash Flows From 
  Operations (A)       $124,390    $151,267    $119,390    $143,616     $89,331
Construction 
  Expenditures (B)       71,420      66,519      59,097      62,599      48,162
Free Cash Flow (A - B)   52,970      84,748      60,293      81,017      41,169

Ratio of Earnings to 
  Fixed Charges            1.39        1.25        1.21        1.10        0.81


<FN>

Note:  See Item 7., Management's Discussion and Analysis of Financial Condition
and Results of Operations.
</TABLE>



ITEM 7. -- MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
- -------------------------------------------------------------------------------

      The following contains information regarding the operations of
UniSource Energy and TEP during 1997 compared with 1996 and 1996 compared
with 1995 and changes in liquidity and capital resources of the Company and
TEP during 1997.  Also, management's expectations of identifiable material
trends are discussed herein.  TEP is the principal subsidiary of UniSource
Energy and accounts for substantially all of its assets, revenues and net
income.  Except as otherwise noted, the following information relates to both
UniSource Energy and TEP.

  OVERVIEW
  --------

       Earnings declined in 1997 relative to 1996 primarily due to the lower
recognition of non-cash income tax benefits in 1997.  Net income was $83.6
million in 1997, compared with $120.9 million recorded in 1996 and $54.9
million recorded in 1995.  Income tax benefits related to prior period net
operating losses totaled $43.4 million in 1997, $88.6 million in 1996 and
$23.3 million in 1995, accounting for the majority of the fluctuation in
reported net income for the last three years.  See Income Tax Position below.
Common stock equity was $216.9 million at year-end, compared to $133.3
million as of December 31, 1996, benefiting from a fourth consecutive year of
profitability.

      In addition to the reduction in income tax benefits described above,
items having a one-time effect on earnings resulted in net reductions to
earnings of $2.4 million in 1997 and $6.1 million in 1996.  Excluding each of
these one-time items from the periods in which they were recorded, ongoing
net income increased by 11% to $42.6 million in 1997 from $38.3 million in
1996.  The following table lists one-time items and compares 1997 operating
results with 1996 results exclusive of these one-time items and the
recognition of NOL carryforward benefits. See Notes 4, 7 and 9 of Notes to
Consolidated Financial Statements for information pertaining to certain of
these items.

                                                    1997        1996
                                                  ---------  ---------
                                                 -Thousands of Dollars-

Net Income                                          $83,572   $120,852
One-Time Items:
  Effects on Operating Income:
     Consulting Fees to New Business                  6,315          0
     Taxes Other Than Income Taxes (1)                    0      7,331
     Voluntary Severance Plan Expense - Net           2,933     10,555
  Effects on Other Income:
     Losses Related to Equity Investments in          7,758          0
       New Businesses
     Other Income - Interest Refund - Net            (2,766)         0
     Other Income - Reversal of Loss Provision      (10,154)    (8,472)
       (2)
     Other Income - Other (2)                             0     (1,064)
  Interest Expense - Other (1)                            0      1,880
  Estimated Income Taxes Associated with One-Time    (1,651)    (4,130)
    Items (3)                                      --------   --------
        Net Adjustment for One-Time Items             2,435      6,100
NOL Carryforward Benefits                           (43,443)   (88,638)
                                                   --------   --------
Total Adjustments to Net Income                     (41,008)   (82,538)
                                                   --------   --------

Net Income, as Adjusted for One-Time Items and      $42,564    $38,314
  NOL Carryforward Benefits                        ========   ========


     (1)  Adjustments related to contested sales tax assessments.
     (2)  Adjustments related to TEP's non-energy related subsidiaries.
     (3)  Calculated based on composite income tax rate (state and federal)
           of 40.4%.

      Despite improvements in financial performance, the Company's and TEP's
financial prospects continue to be subject to significant regulatory,
economic, and other uncertainties, some of which are beyond the Company's and
TEP's control.  These uncertainties include the extent to which TEP, due to
continued high financial and operating leverage, can alter operations and
reduce costs in response to industry changes or unanticipated economic
downturns.  The Company's and TEP's success will depend, in part, on TEP's
ability to contain the costs of serving retail customers and the level of
sales to such customers.  Until the uncertainties surrounding the
introduction of retail competition in Arizona are resolved, predicting the
level of TEP's future energy sales and the composition of its future revenues
is more difficult than projecting for a fully regulated market.  However, it
is likely that some form of retail competition will exist in the next five
years.  See Competition, Retail below.  TEP may be required to unbundle
segments of its services.  In a deregulated environment, revenues from sales
of energy may become less certain although revenues from transmission and
distribution services will likely continue to grow.  Even in a deregulated
environment, TEP will continue to benefit from the anticipated population and
economic growth in the Tucson area through increased revenues from
distribution services.

      The Company is addressing the uncertainties discussed above and is
positioning itself to benefit from the changing regulatory environment.  The
Company is implementing enhanced cost measurement and management techniques,
re-engineering functions at TEP, extending contracts for large wholesale and
retail customers, and developing new entities to provide energy services to
markets beyond TEP's retail service territory.  See Utility Operations, Sales
for Resale; Fuel Supply, Coal; Rates and Regulation, Rate Proposal Before the
ACC; and Investments in Energy-Related Ventures.

      During 1997, the Company made significant progress in the
implementation of its financial strategy to extend maturities of long-term
debt and letters of credit and to reduce its exposure to variable interest
rates.  TEP refinanced $276 million of long-term variable rate debt
obligations at fixed rates in 1997.  As a consequence, TEP's balance of
variable rate debt supported by letters of credit fell from $805 million at
December 31, 1996 to $529 million as of December 31, 1997.  With the
negotiation of a new bank Credit Agreement in 1997 to replace the MRA, TEP
extended its revolving credit availability to 2002 and extended expiration
dates on letters of credit supporting $429 million in variable rate debt
obligations to 2002.  Long-term debt obligations totaling $192 million are
currently scheduled to mature between 1999 and 2003.  TEP plans to refinance
a substantial portion of these obligations during 1998.  See Financing
Developments, TEP Financing Authority, below.

      Despite the improvements described above, the Company's and TEP's
capital structure remains highly leveraged.  Although TEP was able to
refinance and extend the maturities of certain debt obligations at favorable
rates and terms in 1997, there can be no assurances that continued access to
the capital markets at such rates and terms will be available.  Despite the
reduction in variable rate debt obligations in 1997, TEP's earnings and cash
flow would still be affected by changes in interest rate levels on its
remaining variable rate debt.

      Dividend payment restrictions contained in certain of TEP's debt
agreements currently prohibit dividend payments from TEP to UniSource Energy,
thereby limiting cash flow at UniSource Energy and its ability to pay
dividends.  See Dividends on Common Stock below.

       During the next twelve months, TEP expects to be able to fund
operating activities and construction expenditures with internal cash flows,
existing cash balances, and, if necessary, borrowings under the Revolving
Credit.  Net cash flows from operating activities were $124.4 million in
1997, $151.3 million in 1996 and $119.4 million in 1995.  After capital
expenditures, scheduled debt maturities and payments to retire capital lease
obligations, net cash flows available for other investing and financing
activities were $38.1 million in 1997, $36.9 million in 1996, and $25.9
million in 1995. As of February 24, 1998, cash balances, including cash
equivalents for UniSource Energy, were approximately $131 million, of which
$89 million was held by TEP and its consolidated subsidiaries.


COMPETITION
- -----------

     WHOLESALE

      TEP competes with other utilities, marketers and independent power
producers in the sale of electric capacity and energy in the wholesale
market.  TEP's prices for wholesale sales of capacity and energy, generally,
are not permitted to exceed rates determined on a cost of service basis.  In
the fall of 1997, TEP applied for and was granted a tariff to sell at market-
based rates.  This tariff permits TEP to meet market competition.  In the
current market, wholesale prices are substantially below costs determined on
a fully allocated cost of service basis, but, in all instances, wholesale
sales have been made at prices which exceed the level necessary to recover
fuel and other variable costs.  It is expected that competition to sell
capacity will remain vigorous, and that prices may remain depressed for at
least the next several years, due to increased competition and surplus
capacity in the southwestern United States.  Competition for the sale of
capacity and energy is influenced by many factors, including the availability
of capacity in the southwestern United States, the availability and prices of
natural gas and oil, spot energy prices and transmission access.  In
addition, the Energy Policy Act of 1992 has promoted increased competition in
the wholesale electric power markets by encouraging the participation of
utility affiliates, independent power producers and other non-utility
participants in the development of power generation.

      The FERC issued two orders pertaining to transmission access in April
1996.  FERC Order No. 888, among other things, requires all public utilities
that own, control, or operate interstate transmission facilities to offer
transmission service to others under a single tariff that incorporates
certain minimum terms and conditions of transmission service established by
the FERC.  This tariff must also be used by public utilities for their own
wholesale market transactions.  Transmission and generation services for new
wholesale service are to be unbundled and priced separately.  FERC Order No.
889 requires transmission service providers to establish or participate in an
open access same-time information system (OASIS) that provides information on
the availability of transmission capacity to wholesale market participants.
The order also establishes standards of conduct that are designed to prevent
employees of a public utility engaged in marketing functions from obtaining
preferential access to OASIS-related information or from engaging in unduly
discriminatory business practices.  TEP is in compliance with the
requirements of FERC Orders 888 and 889.

      TEP and several other electric utilities located in the southwestern
United States have recently begun to investigate the feasibility of forming
an independent system operator for the region.  It is presently contemplated
that such an organization, if formed, would be responsible for ensuring
transmission reliability and nondiscriminatory access to the regional
transmission grid.  All of the major transmission owners in the Southwest, as
well as a number of users of the transmission system, are involved in the
feasibility study.  Three sets of public meetings were held in order to
obtain public input to the study.  The initial feasibility study was
completed in September 1997 and the participants have begun the detailed
developmental work.  The formation of an independent system operator would be
subject to approval by the FERC and state regulatory authorities in the
region.  The financial aspects of forming an independent system operator,
including the potential effects on TEP's future results of operations, will
be examined as part of the development work.

    RETAIL

      Under current law, TEP is not in direct competition with any other
regulated electric utility for electric service in TEP's retail service
territory.  However, TEP does compete against gas service suppliers and
others who may provide energy services which would be substitutes for, or
permit bypass of, TEP's services.  In addition, in December 1996, the ACC
adopted rules that, if implemented, require a phase-in of retail electric
competition in Arizona over a four year period beginning January 1, 1999.

      TEP actively markets energy and customized energy-related services to
meet customer needs.  TEP has to date lost no customers to self-generation in
part because of such efforts.  For example, TEP's two principal mining
customers, which provide approximately 9% of TEP's total annual revenues from
retail customers, each have executed new contracts and/or amendments that
included, among other things, price reductions, term extensions, and the
provision of interruptible service.  Contracts with TEP's two principal
mining customers are scheduled to expire in March 2001 and January 2003.
Early terminations of the contracts by mining customers require at least one
and up to two years prior notice.  No such notices have been received.

      In December 1996, the ACC voted to adopt certain rules on retail
electric competition.  The rules, if implemented, would require each
"Affected Utility" (TEP, APS, Citizens Utilities Company, and several
electric cooperatives) to open its retail service area to competing electric
service providers on a phased-in basis over the period 1999 to 2003.
Beginning no later than January 1, 1999, retail customers representing at
least 20% of each Affected Utility's 1995 peak demand would be eligible to
choose their electric service provider from companies certificated by the
ACC.  Beginning no later than January 1, 2001, retail customers representing
at least 50% of each Affected Utility's 1995 peak demand would be eligible to
choose their service provider.  All remaining retail customers would then be
eligible to choose from certificated service providers by January 1, 2003.
It is currently unclear which customers would make up those eligible during
the transition years.  Electric service providers would include Affected
Utilities as well as other entities (including power marketers and out-of-
state utilities) that apply for and receive a certificate of convenience and
necessity from the ACC.  Under the rules, Affected Utilities would be
required to provide distribution wheeling services (i.e., retail wheeling) at
rates approved by the ACC in order to facilitate sales by competing energy
providers.  Such wheeling services would involve the transmission of energy
produced by other entities over TEP's transmission and distribution system to
consumers located in TEP's present retail service area.  While retail
wheeling would expose TEP's service area to increased competition for energy
sales, it would also open additional retail markets into which TEP may sell
its electric power, since each of the Affected Utilities would be eligible to
offer electric service to customers of other certificated entities within
Arizona.  Until such time as the ACC determines that retail competition has
been substantially implemented, each Affected Utility would also be required
to provide standard offer bundled service equivalent to the services
currently being provided at regulated rates to all consumers located in their
current retail service areas.  Participation in competitive retail markets by
other electric utilities which are not regulated by the ACC, such as the Salt
River Project and certain municipal utilities, would be permitted, under the
ACC's rules, on a similar reciprocal basis (i.e., these utilities would have
to allow their service territories to be similarly open to competing service
providers), pursuant to an intergovernmental agreement with the ACC.

      The rules, as adopted by the ACC, specify that the ACC would allow the
recovery of unmitigated stranded costs by Affected Utilities.  Stranded cost
is defined in the rules as the net difference between the value of prudent
jurisdictional assets and obligations under traditional regulation and the
market value of those assets and obligations in a competitive retail market.
In order to recover stranded costs, utilities would have to demonstrate to
the ACC that they have taken every feasible, cost-effective measure to
mitigate or offset stranded costs, and utilities would have to file estimates
of unmitigated stranded costs with the ACC which are fully supported by
analyses and records of market transactions undertaken by willing buyers and
sellers.  Furthermore, Affected Utilities would have to seek ACC approval of
distribution charges or other means of recovering unmitigated stranded costs
from customers who reduce or terminate service as a direct result of retail
competition.  The rules specify that other issues related to the analysis and
recovery of stranded costs would be examined by a working group following
adoption of the rules.

      Pursuant to the rules, working groups were formed to analyze various
issues related to retail competition.  Each working group consisted of
members representing a wide variety of interests including the ACC Staff,
consumers, Affected Utilities, and potential new service providers.  Separate
working groups were established to investigate issues related to the
quantification and recovery of stranded costs, the unbundling of utility
services and rates, the maintenance of system reliability and safety, the
methods to be used in determining consumer participation during the early
phase-in periods, and certain legal issues related to the rules.  Reports by
the working groups have been delivered to the ACC.

      In January 1998, TEP filed with the ACC its position regarding stranded
cost recovery.  TEP believes that TEP, as well as other Affected Utilities,
should have the opportunity and right to recover all of their stranded costs
and that the most appropriate method of defining stranded costs would be to
calculate the difference between future revenues under traditional regulation
and future revenues in a competitive market.

      Hearings commenced February 9, 1998 to resolve generic issues relating
to stranded cost recovery.  TEP, as well as other Affected Utilities, the
Residential Utility Consumer Office, the ACC staff, and various intervenors
are participating in the hearings.  Various proposals are being considered for
quantifying unmitigated stranded costs, including the methods used to identify
and value jurisdictional assets and obligations.  The ACC may also consider 
permitting divestiture of generation assets as a means of quantifying stranded
costs.  Until specific guidelines for such identification and valuation have
been adopted by the ACC, TEP believes that any estimate of unmitigated stranded
costs would be highly speculative.

      In February 1997, TEP filed an appeal of the ACC order adopting retail
electric competition rules in the Arizona Superior Court. To date, no final
judgments have been entered by the Court.  At the present time, TEP is unable
to predict the outcome of the Superior Court appeal or the effects such
rules, in their present form, would have on future results of operations.

      In 1996, legislation was passed by the Arizona Legislature requiring
the establishment of a joint legislative study committee on electric industry
competition.  This committee was charged with studying and making
recommendations on a wide variety of issues related to electric industry
competition.  An advisory committee on electric industry competition was also
created, consisting of members representing electric consumers, electric
utilities, various State offices and agencies, and other interested parties.
Three subcommittees of the advisory committee were formed for purposes of
evaluating the timing of retail competition, reviewing tax issues related to
retail competition and identifying specific legislative actions necessary to
implement retail competition.  Reports have been issued and are currently
under consideration by the Legislature.

      In January 1998, legislation was proposed before the Arizona
Legislature regarding the implementation of electric industry competition in
Arizona.  This bill would require the introduction of customer choice to 20%
of each utility's retail load by December 31, 1998 and to all utility retail
customers by December 31, 1999.

      TEP cannot predict the outcome of the proposed legislation or whether
other initiatives on industry restructuring will be proposed by the ACC or
the Arizona Legislature.  However, TEP believes that certain matters
contained in the ACC's current rules on retail competition may require
legislative changes, while other matters may require constitutional
amendments.  Additionally, several federal initiatives regarding retail
electric competition have been introduced in Congress which, if passed, could
modify, augment or preempt the actions taken by the ACC or the Arizona
Legislature.  TEP will continue to assess the likely impact on TEP of the
ACC's rules on retail competition, proposed legislation on retail
competition, and other potential market reforms.  At the present time TEP is
unable to predict the ultimate impact of increased retail competition on
future results of operations.  See Accounting for the Effects of Regulation
below, and Note 1 of Notes to Consolidated Financial Statements, Nature of
Operations and Summary of Significant Accounting Policies, Accounting for the
Effects of Regulation for a discussion of the potential impact of increased
competition on the Company's accounting policies.  See Tax Exempt Local
Furnishing Bonds, below for a discussion of the potential impact of increased
competition on TEP's tax-exempt bond status.


INVESTMENTS IN ENERGY-RELATED VENTURES
- --------------------------------------

      In the Consolidated Balance Sheet and Consolidated Statement of Income
for UniSource Energy as of December 31, 1997, investments in the energy-
related ventures of MEH and its subsidiaries (included in Investments and
Other Property) comprised less than 1% of total assets, while the net loss
related to such investments reduced consolidated net income by 6.5% in 1997.
Depending on the nature of future investment opportunities, UniSource Energy
expects to make additional investments in these subsidiaries and in other
energy-related ventures.  Over time, investments in energy-related ventures
may have a material impact on UniSource Energy's future cash flow and
profitability.  Pursuant to the ACC order issued in November 1997 allowing
the formation of a holding company, the capitalization (debt and equity) of
the subsidiaries which are the sister companies to TEP may not exceed 30% of
TEP's capitalization unless otherwise approved by the ACC.


  RESULTS OF OPERATIONS
  ---------------------

      In 1997, net income was $83.6 million or $2.60 per average share of
common stock compared with $120.9 million or $3.76 per average share of
common stock in 1996, and $54.9 million or $1.71 per average share of common
stock in 1995.

      The decline in earnings in 1997 resulted primarily from the lower
recognition of non-cash income tax benefits related to prior period net
operating losses.  Excluding the impact of the recognition of tax benefits
and other one-time adjustments, on-going net income for 1997 was $42.6
million or $1.32 per share compared with $38.3 million or $1.19 per share in
1996.

      TEP accounts for substantially all of UniSource Energy's assets,
revenues, and net income.  The following discussion is related to TEP's
utility operations, unless otherwise noted.

    RESULTS OF UTILITY OPERATIONS

        Sales and Revenues

      Retail sales and revenues are affected principally by price changes,
consumption and growth factors.  In 1997, customer growth had the greatest
impact on the increase in retail sales and revenues.

      KWh sales to retail customers increased by 2.4% in 1997 compared to
1996.  The kWh sales increase resulted from an increase in the average number
of retail customers and increased sales to mining and residential customers.
The average number of retail customers grew by 2.3% to 313,755 in 1997.
Usage by mining customers increased in 1997 with the addition of service to a
reactivated mine.

      KWh sales to retail customers increased by 5.1% in 1996 over 1995.  The
increase resulted from a 3.0% increase in the average number of retail
customers, increased energy consumption by industrial customers and warmer
temperatures in 1996 compared with 1995.

      Revenues from sales to retail customers were 2.1% greater in 1997 over
1996 as a result of the higher kWh sales discussed above.  The impact of
lower average prices to large mining customers from contract renegotiations
and extensions somewhat offset the effects of higher KWh sales.  In 1996,
revenues from sales to retail customers increased by 6.4%, benefiting from
the increased KWh sales discussed above, as well as the rate increase allowed
under the 1996 Rate Order.

      TEP makes sales for resale on both a firm and interruptible basis to
the extent capacity is not needed for providing energy to TEP's retail
customers.  See Utility Operations, Sales for Resale.  Rates for economy
energy sales are substantially below rates determined on a fully allocated
cost of service basis, but, in all instances, rates exceed the level
necessary to recover fuel and other variable costs.  KWh sales for resale
increased by 2% in 1997 compared with 1996 while revenues from sales for
resale increased by 16% for the same period, driven by higher market prices
in the wholesale energy market.  Factors contributing to the higher market
prices include higher natural gas prices, increased demand due to warmer
temperatures in the southwestern United States in the third quarter of 1997,
WSCC imposed restrictions on the Pacific Intertie (limiting energy
availability from hydro-electric resources in the Northwest in the third
quarter of 1997), and a reduction in regional generating capacity resulting
from planned and forced outages of generating facilities in the Southwestern
United States in the first half of 1997.

      In 1996, KWh sales for resale increased by 46% while the related
revenues increased by 11% over 1995.  Revenues did not increase
proportionately with the increase in kWh sales with the loss of demand
revenues attributable to the expiration of a firm power sale agreement with
Nevada Power Company in December 1995.

      Non-cash revenue from the Amortization of the MSR Option Gain
Regulatory Liability was $11.9 million lower in 1997 than in 1996.  This
regulatory liability was fully amortized as of May 1997.

    Operating Expenses

      Fuel and Purchased Power expense increased in 1997 relative to 1996
because of increased energy requirements to meet increased kWh sales.  Fuel
and Purchased Power expense increased in 1996 over 1995 because of increased
energy requirements to meet increased kWh sales and a one-time $12.2 million
reduction to fuel expense recorded in 1995.  This one-time non-cash reduction
to fuel expense was related to the satisfaction of certain fuel contract
provisions.  Excluding deferred fuel expenses and the one-time $12.2 million
reduction to fuel expenses in 1995, the average cost of fuel per kWh
generated was 1.77 cents, 1.83 cents, and 1.77 cents for 1997, 1996, and
1995, respectively.  In 1997, fuel expense included $1.9 million related to
the amortization of the $50 million contract termination fee paid to TEP's
major coal supplier.  See Note 2 of Notes to Consolidated Financial
Statements, Rate Matters, Springerville Coal Contract Termination Fee.

      Expenses related to consulting fees caused Other Operations expense to 
increase in 1997 compared with 1996.  Such consulting fees consisted of 
payments to NEV made prior to the exercise in September 1997 of the option 
to acquire a 50% interest in NEV.

      Depreciation and Amortization expense decreased in 1997 relative to
1996 with the completion in January 1997 of a three year amortization (at a
rate of $14 million per year) of Springerville Unit 2 rate synchronization
costs established in the 1994 Rate Order, as well as an extension of the
depreciable life for pollution control facilities as required by TEP's 1996
Rate Order.  Depreciation and Amortization expense increased in 1996 compared
to 1995 due to the amortization of additional Springerville Unit 2 rate
synchronization costs to be recovered over a three year period pursuant to
the 1996 Rate Order.  See Note 2 of Notes to Consolidated Financial
Statements, Rate Matters, 1996 Rate Order.

      Taxes Other Than Income Taxes decreased in 1997 versus 1996 because of
a charge of $7.3 million in the third quarter of 1996 related to a court
ruling on contested sales tax assessments.  Lower property taxes in 1997 also
contributed to the variance.  See Note 7 of Notes to Consolidated Financial
Statements, Tax Assessments.

      Voluntary Severance Plan Expense of $2.9 million in 1997 represents VSP
expense related to post-retirement benefits other than pensions recorded in
the first quarter.  The $10.6 million net expense in 1996 reflects
implementation of TEP's Voluntary Severance Plan in the second quarter of
1996 and related pension settlements.  The VSP was accepted by approximately
200 employees, or 15% of the total workforce.

      Income tax expense included in Operating Expenses increased in 1997
compared with 1996 related to an increase in pre-tax operating income, net of
interest expense.

    Other Income (Deductions)

      Income Tax benefits included in Other Income (Deductions) decreased in
1997 as a result of decreased recognition of prior period NOL benefits in
1997.  The recognition of a greater amount of prior period NOL benefits also
caused such income tax benefits to be higher in 1996 than in 1995.  The
Company and TEP recognized $43.4 million, $88.6 million, and $23.3 million of
NOL benefit in 1997, 1996, and 1995, respectively.  The recognition of these
benefits results from a revision in the estimated amount of NOLs that the
Company and TEP believe are likely to be used on future income tax returns. A
significant factor, among others, considered in estimating such amount is the
three year historical average book income before taxes.  In future periods
when such NOLs are used on tax returns, the income tax expense shown on the
Company's and TEP's Consolidated Statements of Income will not be reduced to
reflect such utilization.

      As of the end of December 31, 1997, on a cumulative basis, the Company
and TEP had recognized in their income statement the amount of prior period
NOL benefit that the Company and TEP expect to use on future income tax
returns.  Additional amounts of prior period NOL benefit which may be
recognized in the future in the Company's and TEP's income statement are at
present indeterminate due to the interplay of open tax years for which tax
assessments may be made and varying expiration dates of federal and state NOL
carryforwards.  See Income Tax Position below.

      A Reversal of Loss Provision in the amount of $10.2 million was
recorded in the second quarter of 1997 as a result of the dissolution of
certain subsidiaries which formed part of TEP's former investment operations.
A Reversal of Loss Provision of $8.5 million was recorded in the third
quarter of 1996.  The 1996 Reversal of Loss Provision relates to the
satisfaction by TEP's non-energy related subsidiaries of approximately $8.5
million of short-term debt obligations through the assignment of certain
finance receivables held by such subsidiaries.  See Notes 4 and 5 of Notes to
Consolidated Financial Statements, Consolidated Subsidiaries, TEP
Subsidiaries and Long and Short-Term Debt and Capital Lease Obligations,
Short-Term Debt.

      Other Income (Deductions) was lower in 1997 than in 1996 resulting from
equity in losses from new business investments.

    Interest Expense

      Interest Expense on Long-Term Debt increased in 1997 over 1996 as a
result of the refinancing of certain variable and fixed rate debt obligations
with unsecured fixed rate debt obligations, having later maturity dates, at
higher interest rates (see Financing Developments, TEP Sale of Bonds, below),
as well as higher average interest rates on TEP's variable rate debt
obligations.  The weighted average interest rate on TEP's tax-exempt variable
rate debt obligations was 3.7% in 1997 and 3.5% in 1996, excluding letter of
credit fees.

      Other Interest Expense was lower in 1997 than in 1996 due to $1.9
million in interest expense incurred in the third quarter of 1996 related to
the 1996 contested sales tax assessment of $7.3 million.


  ACCOUNTING FOR THE EFFECTS OF REGULATION
  ----------------------------------------

      TEP prepares its financial statements in accordance with the provisions
of FAS 71.  This statement requires a cost-based rate-regulated utility to
reflect the effect of regulatory decisions in its financial statements.  In
certain circumstances, FAS 71 requires that certain costs and/or obligations
be reflected in a deferral account in the balance sheet and not be reflected
in the statement of income or loss until matching revenues are recognized.
Therefore, the Company's and TEP's Consolidated Balance Sheets at December
31, 1997 and 1996, contain certain line items (for example, Deferred Debits -
Regulatory Assets, Accumulated Deferred Investment Tax Credits Regulatory
Liability, MSR Option Gain Regulatory Liability, Emission Allowance Gain
Regulatory Liability, and Other Regulatory Liabilities) solely as a result of
the application of FAS 71.  In addition, a number of line items in the
Company's and TEP's Consolidated Statements of Income for the years ended
December 31, 1997, 1996 and 1995 also reflect the application of FAS 71.

          If at some point in the future TEP determines that all or a portion
of its regulated operations no longer meet the criteria for continued
application of FAS 71, TEP would be required to adopt the provisions of FAS
101 for that portion of the operations for which FAS 71 no longer applied.
As of the date of adoption of FAS 101, TEP would be required (unless
alternative regulatory recovery mechanisms were provided) to write off its
regulatory assets and liabilities and would be precluded in subsequent
periods from creating regulatory assets by deferring incurred costs expected
to be recovered through rates in the future.  Based on the balances of the
regulatory assets and liabilities at December 31, 1997, TEP estimates that
future adoption of FAS 101 if applied to all of the regulated operations,
would result in an extraordinary loss of $181 million, which includes a
reduction for the related income tax benefit of $100 million.  Cash flows
would not be affected by the adoption of FAS 101.

      At the present time, TEP recovers the costs of its plant assets through
its regulated revenues.  If in the future TEP discontinues accounting
according to the provisions of FAS 71, TEP would also need to consider
whether the markets in which it is then selling power will allow recovery of
the costs of its plant assets.  If at that time, market prices are not
expected to allow TEP to recover the costs of its plant assets, additional
write-downs may be required in accordance with the provisions of FAS 121.
TEP is presently unable to predict the amounts, if any, of potential future
write-downs attributable to the provisions of FAS 121 under such
circumstances.

      As noted in Competition, Retail above, in December 1996, the ACC voted
to adopt rules on retail electric competition in Arizona.  However, the ACC
has not yet adopted specific guidelines for quantifying unmitigated stranded
costs, including the methods used to identify and value jurisdictional assets
and obligations.  In February 1998 the ACC held hearings regarding stranded
costs, including, but not limited to, comparisons of methods of computation
of stranded costs and the appropriate level of stranded cost for which
recovery should be authorized.  The hearing officer is expected to issue a
recommended order in the second quarter of 1998.  Following the issuance of
the recommended order, the ACC will determine, following an open meeting,
whether to adopt the recommended order in whole or in part.  The Company is
unable to predict whether such an order would provide guidance as to the
specific stranded costs allowable as recoverable by TEP, or whether an
additional set of hearings for individual companies will be needed to
determine the amounts recoverable by TEP.  In addition, in January 1998,
legislation was proposed before the Arizona Legislature regarding the
introduction of electric industry competition in Arizona.  TEP cannot predict
the outcome of the proposed legislation or whether the ACC and the Arizona
Legislature will propose other initiatives on industry restructuring.  TEP,
in reliance on previous rate orders, believes that it will recover the full
costs of its investments in utility plant assets and regulatory assets.  The
hearing officer's recommended order or the order as finally adopted by the
ACC may include language that precludes TEP from continuing to apply FAS 71
to the generation portion of its operations.  If less than full recovery of
stranded costs is provided, significant write-offs of assets may occur
(relating to adoption of FAS 101 and application of FAS 121 as described
above).  Approximately 65% of the regulatory assets described in Note 1 of
Notes to the Consolidated Financial Statements, Accounting for the Effects of
Regulation relate to the generation portion of TEP's operations.

      Further, in response to legislative and other measures being developed
in various states to deregulate the electric generation business, the Company
is aware that the SEC and the Emerging Issues Task Force of the Financial
Accounting Standards Board (EITF) have been reviewing the appropriateness of
electric utilities continuing to account for generation transactions in
accordance with FAS 71 in states where such deregulation is beginning to
develop.  In general, the EITF concluded that utilities are no longer subject
to FAS 71 for the generation portion of their business when a deregulation plan
is in place and its terms are known.  The EITF also concluded that utilities can
continue to carry previously recorded regulatory assets (including those
related to generation) on their balance sheets if regulators have provided a 
regulated cash flow stream to recover the cost of their assets.  The application
of the EITF consensus to specific factual circumstances remains unclear.
    
	  Based on the consensus issued by the EITF in May and July 1997, at
some point in the future, TEP may be unable to continue to apply FAS 71 to
the generation portion of the business, even if TEP believes it will recover
the full amount of its costs under the ACC competition phase-in plan.

      The Company and TEP are unable to predict the outcome of these matters.


  DIVIDENDS ON COMMON STOCK
  -------------------------

    UniSource Energy

      The Company's ability to pay dividends is dependent upon cash flow from
its subsidiaries, TEP and MEH.  TEP comprises substantially all of UniSource
Energy's assets.  TEP is currently precluded by restrictive covenants in
certain debt agreements from declaring or paying dividends.  No dividend on
common stock has been declared or paid by TEP since 1989.  Until such time as
TEP is able to pay dividends to UniSource Energy, it is unlikely that
UniSource Energy would declare and pay dividends to holders of its Common
Stock.

    TEP

      So long as certain series of First Mortgage Bonds (aggregating $184
million in principal amount) are outstanding, the payment of dividends on TEP
Common Stock is prohibited if certain cash flow coverage and retained
earnings tests are not met.  The cash flow coverage test would prevent TEP
from paying dividends on its Common Stock until such time as its cash flow
coverage ratio, as defined therein, is greater or equal to a ratio of 2 to 1,
and the retained earnings test would permit dividend payments so long as TEP
has positive retained earnings.  As of December 31, 1997, TEP had a cash flow
coverage ratio in excess of 3 to 1 but did not meet the retained earnings
test as the accumulated deficit was $422 million.  Such covenants will remain
in effect until the First Mortgage Bonds of such series have been paid or
redeemed.  The latest maturity of such First Mortgage Bonds is in 2003.  In
order for TEP to pay a dividend before such maturity date, TEP would need to
have positive retained earnings or redeem all outstanding First Mortgage
Bonds of each series that contain such covenants or amend the supplemental
mortgage indentures pertaining to such series of First Mortgage Bonds.  Such
an amendment would require approval by holders of 75% of all First Mortgage
Bonds.

      During 1998, TEP plans to refinance or retire a substantial portion of
the First Mortgage Bonds that currently prohibit the payment of dividends.
See Financing Developments, TEP Financing Authority, below.  TEP may also
seek bondholder approval to remove or revise covenants contained in the
supplemental indentures that currently prohibit the payment of dividends.

      TEP's bank Credit Agreement allows for the payment of dividends so long
as TEP maintains compliance with the agreement and meets its financial
covenants, including a covenant which requires TEP to maintain a minimum
level of net worth.  As of December 31, 1997, the required minimum net worth
was $166.4 million.  See Additional Restrictive Covenants, below.  As of
December 31, 1997, TEP was in compliance with the terms of the Credit
Agreement.

      Pursuant to the ACC Holding Company Order, until such time as TEP's
equity ratio equals 37.5% of total capital (excluding capital lease
obligations), TEP may not pay dividends to UniSource Energy in excess of 75%
of its earnings.  As of December 31, 1997, TEP's equity ratio was 15%.

      In addition to such restrictive covenants, the Federal Power Act states
that dividends shall not be paid out of funds properly included in the
capital account.  It is unclear whether such provisions of the Federal Power
Act restrict TEP from paying dividends.


  LIQUIDITY AND CAPITAL RESOURCES
  -------------------------------

    CASH FLOWS

      UniSource Energy and TEP

      Due to growth in retail sales and cost containment efforts, net cash
flows from continuing operations were more than sufficient, in all three
years from 1995 to 1997, to cover all construction expenditures and debt
maturities.

      Net cash flows from operating activities decreased in aggregate by $27
million in 1997 compared with 1996, after giving effect to a $40 million
payment to a major coal supplier in 1997 as part of a contract termination
fee.  See Note 2 of Notes to Consolidated Financial Statements, Rate Matters,
Springerville Coal Contract Termination Fee.  Excluding this contract
termination fee, net cash flows from operating activities increased by $13
million to $164 million from $151 million in 1996.  This increase resulted
from a $27 million increase in cash receipts from retail and wholesale
customers and a $12 million decrease in wages paid (net of amounts
capitalized).  This decrease in wages paid was related to the implementation
of TEP's Voluntary Severance Plan in the second quarter of 1996.  These
increases to net cash flows were partially offset by a $24 million increase
in fuel and purchased power payments and $15 million in cash received from
the sale of emission allowances in 1996.

      Net cash outflows from investing activities were relatively unchanged
in 1997 compared to 1996 as construction expenditures increased by $5
million, while investments in joint ventures decreased by $4 million.

      Net cash outflows from financing activities increased in aggregate by
$3 million in 1997 compared with 1996.  Despite a significant amount of debt
issuance activity in 1997, the majority constituted refinancing of existing
debt, with only $23 million in net new funds.  See Financing Developments
below.  TEP also repaid the outstanding principal balance of $31 million on
its Renewable Term Loan in 1997.  Payments toward the retirement of capital
lease obligations decreased by $23 million due primarily to a scheduled
reduction in lease payments on Irvington Unit 4.  Lease payments on Irvington
Unit 4 totaled $8.5 million in 1997 and $28.0 million during 1996.  Future
scheduled lease payments on Irvington Unit 4 average approximately $13
million per year through the end of the lease term in 2011.

      As a result of activities described above, cash and cash equivalents
increased by $16 million or 12% from the 1996 year-end balance of $130
million to the 1997 year-end balance of $146 million.  The Company's
consolidated cash balance including cash equivalents at February 24, 1998,
was approximately $131 million.  Of this amount, $89 million was held by TEP
and its wholly-owned subsidiaries.  Cash balances are invested in investment
grade, money-market securities with an emphasis on preserving the principal
amounts invested.

     TEP

      During 1998, TEP expects to generate sufficient internal cash flows to
fund its operating activities and construction expenditures.  However, TEP's
cash flows are subject to variation due to changes in wholesale revenues,
changes in short-term interest rates, and other factors.  For example, an
increase in short-term interest rates of 100 basis points (1%) would result
in an approximate $5 million increase in annual interest payments at current
variable debt levels.  If cash flows were to fall short of expectations, TEP
would rely on existing cash balances and, if necessary, borrowings under the
Revolving Credit.

     UniSource Energy

      During 1998 and beyond, the Company's sources of cash will be primarily
dividends from TEP (when allowed) and proceeds from the sale of securities.
Potential cash requirements may include funds to provide to subsidiaries,
funds to meet debt service obligations, and funds for the payment of
dividends to shareholders.  See Dividends on Common Stock and Financing
Developments, UniSource Energy for details on these sources and uses of
funds.


    FINANCING DEVELOPMENTS

     TEP Sale of Bonds

      In April 1997, the City of Farmington, New Mexico issued $80.4 million
of Pollution Control Revenue Bonds for the benefit of TEP.  The net proceeds
made available to TEP were used in June 1997 to redeem $47.9 million
principal amount of previously issued 6.25% bonds that would have matured in
2003 and $32.5 million principal amount of previously issued 6.10% bonds that
would have matured in 2007.  The new bonds, which are unsecured, bear
interest at 6.95% and mature in 2020.  In addition to extending maturities,
this transaction eliminated sinking fund requirements under the previously
issued bonds and resulted in the retirement of $32.5 million in
collateralizing First Mortgage Bonds.

      In April 1997, the Coconino County, Arizona Pollution Control
Corporation issued $36.7 million of Pollution Control Revenue Bonds for the
benefit of TEP.  The net proceeds loaned to TEP were used, in part, to
redeem, in June 1997, $16.7 million principal amount of previously issued
variable rate bonds that would have matured in 2031 and the remaining portion
is being used to fund $20 million of construction costs of additional
pollution abatement facilities at Navajo Generating Station.  The new bonds,
which are unsecured, bear interest at 7.125% and mature in 2032.  The $16.7
million of previously issued bonds redeemed in this transaction were backed
by a letter of credit expiring in April 1999, which was collateralized by
$18.3 million aggregate principal amount of First Mortgage Bonds.

      In April 1997, the Coconino County, Arizona Pollution Control
Corporation issued $14.7 million of Pollution Control Revenue Bonds for the
benefit of TEP.  The net proceeds loaned to TEP were used in June 1997 to
redeem $14.7 million principal amount of previously issued variable rate
bonds that would have matured in 2031.  The new bonds, which are unsecured,
bear interest at 7.00% and mature in 2032.  The $14.7 million of previously
issued bonds redeemed in this transaction were backed by a letter of credit
expiring in April 1999, which was collateralized by $16.1 million aggregate
principal amount of First Mortgage Bonds.

      In October 1997, the Industrial Development Authority of the County of
Pima, Arizona issued $247.5 million of Industrial Development Revenue Bonds
for the benefit of TEP.  The net proceeds loaned to TEP were used in November
1997, to redeem $245 million principal amount of previously issued variable
rate bonds that would have matured between 2018 and 2025 and to finance
improvements to TEP's lower voltage electric transmission and distribution
system in Pima County, Arizona.  The new bonds, which are unsecured, were
sold in three series: Series A ($22.5 million) bears interest at 6.10% and
matures in 2025; Series B ($150 million) and Series C ($75 million) bear
interest at 6.00% and mature in 2029.  The previously issued bonds redeemed
in this transaction were backed by letters of credit expiring between 2000
and 2002.  One of these letters of credit was collateralized by $20.7 million
aggregate principal amount of First Mortgage Bonds.

     TEP Bank Credit Agreements

      In February 1997, TEP repaid the outstanding balance of $31 million
under the Renewable Term Loan under the MRA.  In December 1997, the MRA was
replaced with a new bank Credit Agreement (described below).  Upon
termination of the MRA, a release of lien was obtained for Springerville Unit
2, title to which is held by San Carlos.  Second Mortgage Bonds ($50 million
aggregate principal amount) held as collateral under the MRA were also
returned to TEP.

      In December 1997, TEP entered into a new $544 million bank Credit
Agreement to replace the credit facilities provided under the MRA.  The new
Credit Agreement consists of a $100 million Revolving Credit Facility for
general corporate purposes and a $444 million Letter of Credit Facility to
support $428.6 million aggregate principal amount of tax-exempt variable rate
debt obligations.  The facilities mature on December 30, 2002 and are secured
by Second Mortgage Bonds ($544 million aggregate principal amount).  The
Credit Agreement contains certain financial covenants, including interest
coverage, leverage and net worth tests.  As of December 31, 1997, TEP was in
compliance with such financial covenants.  See Restrictive Covenants below.

      Borrowings, if any, under the Revolving Credit Facility bear interest
at a variable rate consisting of a spread over LIBOR or an alternate base
rate.  The spread is based upon a pricing grid tied to the credit rating then
in effect on TEP's senior secured debt.  The annual commitment fee payable on
the unused portion of the Revolving Credit Facility, as well as the fee
payable on the Letter of Credit Facility, are also determined based upon
TEP's credit ratings.  At December 31, 1997, the commitment fee equaled
0.375% per annum, while the letter of credit fee (excluding LOC fronting fees
of 0.125%) and applicable LIBOR spread equaled 1.625% per annum.  TEP had no
borrowings outstanding under the Revolving Credit Facility at December 31,
1997.

     TEP Financing Authority

      TEP obtained authority from the ACC in August 1997 to refinance up to
$450 million of tax-exempt variable rate debt obligations.  As described
above in Sale of Bonds, TEP refinanced $245 million in tax-exempt variable
rate debt obligations with fixed rate unsecured debt in October 1997, leaving
$205 million in available refinancing authority.  During the first half of
1998, TEP intends to refinance $100 million aggregate principal amount of its
1981 Series A Apache County Pollution Control Revenue Bonds and $100 million
aggregate principal amount of its 1981 Series B Apache County Pollution
Control Revenue Bonds.  The 1981 Series A Apache Bonds are supported by
letters of credit which are collateralized by Second Mortgage Bonds under the
terms of TEP's Credit Agreement.  The refinancing of these bonds would reduce
the amount of the Letter of Credit Facility from $444 million to $341 million
and reduce the amount of Second Mortgage Bonds collateralizing such LOCs by
$103 million.  The 1981 Series B Apache Bonds are supported by a letter of
credit outside of the Credit Agreement and are collateralized by First
Mortgage Bonds.  The refinancing of these bonds on a fixed rate unsecured
basis would eliminate a letter of credit which expires in 1999 and retire the
$103 million of First Mortgage Bonds collateralizing the LOC.

      TEP also obtained authority from the ACC in 1997 to refinance up to
$184 million in First Mortgage Bonds scheduled to mature between 1999 and
2003, with the issuance of new securities consisting of debt and/or equity
securities.  TEP intends to pursue the negotiation and consummation of such
transactions during 1998 with the objective of extending maturities and
eliminating restrictive covenants contained in the existing First Mortgage
Bonds.

      There can be no assurance that any of the contemplated transactions
will be consummated or that the terms of any transactions which are
consummated will result in the realization of TEP's objectives.  TEP may
incur increased financing costs as a result of the completion of the proposed
financings.  TEP believes, however, that such costs are outweighed by related
benefits, including the extension of maturities, reduction in volatility of
capital costs, and elimination of certain restrictions on the payment of
dividends.

     UniSource Energy

      On January 1, 1998, the Company and TEP completed a statutory share
exchange, pursuant to which the outstanding common stock of TEP was
exchanged, on a share-for-share basis, for the common stock of the Company.
Following the share exchange, TEP transferred the stock of its subsidiary,
MEH Corporation to the Company in exchange for a ten-year promissory note 
from UniSource Energy in the amount of $95 million.  The promissory note was
issued in accordance with the ACC Order authorizing the formation of the
holding company.  Pursuant to the ACC Order, the interest rate on the note
issued to TEP is 9.78%. 

      UniSource Energy plans to establish a direct stock purchase plan in the
first half of 1998, pursuant to which UniSource Energy will issue up to
1,000,000 shares of common stock.

      Pursuant to the ACC Holding Company Order, 60% of the proceeds of any
public equity issuance undertaken by the Company in its first five years of
operations must be used to reduce TEP's debt or add to TEP's equity account.

    TAX EXEMPT LOCAL FURNISHING BONDS

     TEP has financed a substantial portion of utility plant assets with the
proceeds of the issuance and sale of industrial development revenue bonds by
the Industrial Development Authorities of Pima County and Apache County.  The
interest on these bonds is, with certain exceptions, excluded from gross
income for federal tax purposes.  Such exclusion is based, in part, upon the
qualification of the facilities "for the local furnishing of electric energy"
within the meaning of the Internal Revenue Code.  Such qualification
requires, among other things, that such facilities be part of a system
providing electric service to the general populace of not more than two
contiguous counties and that the owner or operator of such facilities be
obligated to provide such service.  TEP provides electric service to retail
customers in the city of Tucson and environs in Pima County, Arizona and to
Fort Huachuca in adjacent Cochise County.

     As of December 31, 1997, there were approximately $580 million in
aggregate principal amount of local furnishing bonds outstanding.  In
addition, approximately $98 million aggregate principal amount of debt
related to the Irvington Unit 4 lease obligation was issued on the basis of
local furnishing rules.  The facilities financed by TEP with the proceeds of
such tax-exempt bonds include Springerville Unit 2, Irvington Unit 4, a
dedicated 345-kV transmission line from Springerville Unit 2 to TEP's retail
service area (the "Express Line"), and a portion of TEP's local transmission
and distribution system in the Tucson metropolitan area.  Although the
introduction of retail competition and expanded wholesale competition could
affect energy flows on TEP's system, TEP does not expect future energy flows
to change in such a manner as to cause a loss of the two-county tax
exemption.  Additionally, TEP does not expect its system to lose its
qualification as a local furnishing system as a result of the potential
formation of an independent system operator (see Competition, Wholesale) or
as a result of future sales of electricity on a competitive retail basis
outside of the current two-county service area.  However, there can be no
assurance of continued qualification of the system.  Should TEP's local
furnishing system become disqualified, due to unanticipated changes in tax
laws, industry structure, or system operations, TEP would likely be required
to redeem or defease all local furnishing bonds outstanding.


  INCOME TAX POSITION
  -------------------

      At December 31, 1997, the Company and TEP had, for federal income tax
purposes, approximately $437 million of NOL carryforwards expiring in 2005
through 2009; $26 million of alternative minimum tax (AMT) loss carryforwards
expiring in 2008; $26 million of unused ITC, the use of which will expire
during 2002 through 2005; $11 million of capital loss carryforwards which
expire in 1999; and $6 million of AMT credit which will carry forward to
future years.  For state income tax purposes, the Company and TEP had
approximately $29 million of NOL carryforwards expiring in 1998 and 1999.

      Due to the Financial Restructuring in 1992, the Company and TEP
experienced a change in ownership under section 382 of the Internal Revenue
Code in December 1991.  As a result, the amount of taxable income for any
post-change year which may be offset by pre-change NOL will be limited to the
section 382 limitation.  The section 382 limitation is based on the value of
the Company and TEP on the ownership change date.  The Company and TEP
estimate an annual section 382 limit of approximately $23 million.  The total
section 382 limitation may be increased to the extent of gains recognized on
sales of assets whose fair market value was greater than tax basis at the
ownership change date, the built-in-gain.  The section 382 limitation may
increase by built-in-gain recognized within a period of five years after the
change in ownership.  During 1992 through 1996, the section 382 limitation
increased by approximately $102 million of built-in-gain recognized due to
asset sales.  Unused section 382 limitation may be carried forward until the
pre-change tax attributes expire.  At December 31, 1997, the Company and TEP
had pre-change federal NOL and ITC carryforwards of approximately $281
million and $26 million, respectively.  Such amounts are included in the
amounts disclosed in the preceding paragraph.  See Note 7 of Notes to
Consolidated Financial Statements, Contingencies, Income Tax Assessments, for
information regarding a recent IRS challenge to the Company's and TEP's
computation of the Section 382 limitation.

  RESTRICTIVE COVENANTS
  ---------------------

   GENERAL FIRST MORTGAGE COVENANTS

      TEP's General First Mortgage constitutes a first mortgage lien on and
security interest in substantially all the utility plant assets of TEP.
(Springerville Unit 2, title to which is held by San Carlos, is not subject
to such lien and security interest.)  Under the General First Mortgage, TEP
may issue additional First Mortgage Bonds (a) to the extent of 60% of net
additions to utility property if net earnings, as defined therein, for a
specified period of 12 consecutive calendar months out of the 15 calendar
months preceding the date of issuance are at least two (2.0) times the annual
interest requirements on all First Mortgage Bonds to be outstanding and (b)
to the extent of the principal amount of retired bonds.  The net earnings
test specified in clause (a) above generally need not be satisfied prior to
the issuance of bonds in accordance with clause (b) above unless (x) (i) the
new bonds are issued within one year after the issuance of, or more than two
years prior to the stated maturity of, the retired bonds and (ii) the new
bonds bear a greater rate of interest than the retired bonds or (y) the new
bonds are issued in respect of retired bonds the interest charges on which
have been excluded from any net earnings certificate filed with the indenture
trustee since the retirement of such bonds.  At December 31, 1997, TEP had
the ability to issue approximately $133 million of new First Mortgage Bonds
on the basis of property additions, as described above, and, in addition, TEP
had the ability to issue approximately $189 million of new First Mortgage
Bonds on the basis of retired bonds.  However, TEP's Credit Agreement
provides that the amount of outstanding First Mortgage Bonds shall not exceed
$411 million, the amount outstanding as of December 31, 1997.  Additionally,
the Credit Agreement contains certain financial covenants which serve to
limit the amount of new debt obligations TEP may issue.  See Additional
Restrictive Covenants below.

      See Dividends on Common Stock above for a discussion of restrictions on
the payment of Common Stock dividends under the General First Mortgage.

   GENERAL SECOND MORTGAGE COVENANTS

      TEP's General Second Mortgage constitutes a second mortgage lien on and
security interest in substantially all the utility plant assets of TEP (but
not of San Carlos).  Under the General Second Mortgage, TEP may issue
additional Second Mortgage Bonds (a) to the extent of 70% of net additions to
utility property if net earnings, as defined therein, for a specified period
of 12 consecutive calendar months within the 16 calendar months preceding the
date of issuance are at least one and three-quarters (1-3/4) times the annual
interest requirements on all First Mortgage Bonds and Second Mortgage Bonds
to be outstanding and (b) to the extent of the principal amount of retired
Second Mortgage Bonds and First Mortgage Bonds.  Issuance of Second Mortgage
Bonds on the basis of an amount of retired First Mortgage Bonds reduces by
the same amount the First Mortgage Bonds which could be issued under the
General First Mortgage on the basis of retired bonds.  The net earnings test
specified in clause (a) above generally need not be satisfied prior to the
issuance of bonds in accordance with clause (b) above unless (x) (i) the new
bonds are issued within one year after the issuance of, or more than two
years prior to the stated maturity of, the retired bonds and (ii) the new
bonds bear a greater rate of interest than the retired bonds or (y) the new
bonds are issued in respect of retired bonds the interest charges on which
have been excluded from any net earnings certificate filed with the indenture
trustee since the retirement of such bonds.  At December 31, 1997, TEP had
the ability to issue approximately $264 million aggregate principal amount of
new Second Mortgage Bonds on the basis of net property additions as described
above.  Additionally, TEP had the ability to issue approximately $239 million
of new Second Mortgage Bonds on the basis of retired bonds.  Using an assumed
interest rate of 8% per annum for the new issuances of Second Mortgage Bonds,
the net earnings test would not prohibit such issuances.  The issuance of
such amounts of Second Mortgage Bonds assumes that no additional First
Mortgage Bonds would be issued other than to refund First Mortgage Bonds
outstanding at December 31, 1997.  However, issuance of such amounts would be
limited by financial covenants in TEP's bank Credit Agreement.

      See Financing Developments, TEP Bank Credit Agreements and Restrictive
Covenants, Credit Agreement Covenants for information regarding the new
Credit Agreement which is secured by $544 million in aggregate principal
amount of Second Mortgage Bonds.

   CREDIT AGREEMENT COVENANTS

      On December 30, 1997, TEP entered into a new Credit Agreement to
replace the facilities provided under the MRA.  The Credit Agreement contains
a number of restrictive covenants.  The entities governed by such covenants
are TEP and its Consolidated Subsidiaries (defined as San Carlos and each
other Subsidiary of TEP from time to time so designated by TEP).  Such
restrictive covenants include, but are not limited to, covenants limiting,
with certain exceptions, (i) the incurrence of additional indebtedness, (ii)
the incurrence of liens, (iii) the sale of assets or the merger with or into
any other entity, (iv) the ability to make restricted payments (i.e.
dividends) in the event of a default, and (v) the Company's ability to enter
into sale-leaseback arrangements.  In addition, TEP is required to maintain
certain financial covenants including (a) a minimum Consolidated Tangible Net
Worth equal to the sum of $133 million plus 40% of cumulative Consolidated
Net Income since January 1, 1997, (b) a minimum Cash Coverage Ratio ranging
from 1.30 in 1997 and gradually increasing to 1.55 in 2002, and (c) a maximum
Leverage Ratio ranging from 7.00 in 1997 and gradually decreasing to 6.20 in
2002.  For the year ended December 31, 1997, TEP's Consolidated Tangible Net
Worth of $216.9 million exceeded the required minimum of $166.4 million; its
Cash Coverage Ratio was 1.67 and its Leverage Ratio was 6.64.  See Dividends
on Common Stock for a discussion of the effects of such covenants on TEP's
ability to declare or pay dividends.

      See Financing Developments, TEP Bank Credit Agreements for more
information regarding the new Credit Agreement.

  CONSTRUCTION EXPENDITURES
  -------------------------

      Estimated construction expenditures of TEP, including AFDC, for the
five years 1998 through 2002, respectively, are $96 million, $78 million, $73
million, $59 million and $59 million.  These amounts include the following:
$217 million for transmission and distribution facilities in the Tucson area;
$8 million for expenditures which are necessary to upgrade pollution control
facilities at Navajo (see Item 1., Business, Environmental Matters, Navajo
Generating Station); $11 million for expenditures associated with the
pollution control facilities at San Juan (see Item 1., Business,
Environmental Matters, San Juan Generating Station); and $129 million related
to existing production facilities, a small portion of which relates to the
potential purchase of gas combustion turbines currently under lease by TEP.
These estimated construction expenditures include costs to comply with
current federal and state environmental regulations.  All of these estimates
are subject to continuing review and adjustment.  Actual construction
expenditures may vary from these estimates due to factors such as changes in
business conditions, construction schedules and environmental requirements.
TEP plans to fund these construction expenditures through internally
generated funds.

      Also, see Notes 5 and 7 of Notes to Consolidated Financial Statements,
Long and Short-Term Debt and Capital Lease Obligations, and Commitments and
Contingencies, respectively.


  IMPACT OF YEAR 2000 ON COMPUTER SYSTEMS AND APPLICATIONS
  --------------------------------------------------------

      The Company has and will continue to review, test and make
modifications to its computer systems and applications to ensure that its
generation, transmission and distribution facilities will provide
uninterrupted service and that year 2000 transactions can be processed.  This
review process includes its information systems, the control and embedded
systems of TEP's utility plant (including that in which TEP has an ownership
interest but does not have operating control), as well as the status of major
vendors.  The Company has identified the major vendors with which it has
major alliances or dependencies upon products or services and is in the
process of contacting such vendors to ascertain what plans they have to
correct any problems they may face with year 2000 compliance.  TEP is also
involved in discussions with other electric service providers in the WSCC to
evaluate potential risks associated with this issue resulting from
interconnected electric and informational systems.

      At this time it is the Company's assessment that all identified
modifications to systems within the Company's operating control will be made
within the required time frames.  The Company currently estimates that the
costs associated with this project are not material to the Company's
operating results.  The Company can make no assurances regarding the year
2000 compliance status of systems or parties outside of the Company's direct
control and the Company cannot assess the effect on the Company of non-
compliance by systems or parties outside of the Company's direct control.

  SAFE HARBOR FOR FORWARD-LOOKING STATEMENTS
  ------------------------------------------

      UniSource Energy and TEP are including the following cautionary
statements to make applicable and take advantage of the safe harbor
provisions of the Private Securities Litigation Reform Act of 1995 for any
forward-looking statements made by, or on behalf, of UniSource Energy or TEP
in this Annual Report on Form 10-K.  Forward-looking statements include
statements concerning plans, objectives, goals, strategies, future events or
performance and underlying assumptions and other statements which are other
than statements of historical facts.  Such forward-looking statements may be
identified, without limitation, by the use of the words "anticipates,"
"estimates," "expects," "intends," "plans," "predicts," "projects," and
similar expressions.  From time to time, the Company may publish or otherwise
make available forward-looking statements of this nature.  All such forward-
looking statements, whether written or oral, and whether made by or on behalf
of UniSource Energy or TEP, are expressly qualified by these cautionary
statements and any other cautionary statements which may accompany the
forward-looking statements.  In addition, UniSource Energy and TEP disclaim
any obligation to update any forward-looking statements to reflect events or
circumstances after the date hereof.

      Forward-looking statements involve risks and uncertainties which could
cause actual results or outcomes to differ materially from those expressed in
the forward-looking statements.  The expectations, beliefs and projections of
UniSource Energy and TEP are expressed in good faith and are believed by
UniSource Energy and TEP to have a reasonable basis, including without
limitation, management's examination of historical operating trends, data
contained in the records of UniSource Energy and TEP and other data available
from third parties, but there can be no assurance that management's
expectations, beliefs or projections will result or be achieved or
accomplished.  In addition to other factors and matters discussed elsewhere
herein, some of the important factors that, in the view of UniSource Energy
and TEP, could cause actual results to differ materially from those discussed
in the forward-looking statements include the following:

1. Effects of restructuring initiatives in the electric industry and other
   energy-related industries.

2. Changes in economic conditions, demographic patterns and weather
   conditions in TEP's retail service area.

3. Changes affecting TEP's cost of providing electrical service including,
   but not limited to, changes in fuel costs, generating unit operating
   performance, interest rates, tax laws, environmental laws, and the general
   rate of inflation.

4. Changes in governmental policies and regulatory actions with respect to
   allowed rates of return, financings, and rate structures.

5. Changes affecting the cost of competing energy alternatives, including
   changes in available generating technologies and changes in the cost of
   natural gas.

6. Changes in accounting principles or the application of such principles to
   UniSource Energy or TEP.


  ITEM 8. -- CONSOLIDATED FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
- -------------------------------------------------------------------------------

    See Item 14, page 76, for a list of the Consolidated Financial Statements
which are included in the following pages.  See Note 11 of Notes to
Consolidated Financial Statements.   



INDEPENDENT AUDITORS' REPORT
- ----------------------------

UniSource Energy Corporation and its Stockholders
Tucson Electric Power Company

We have audited the accompanying consolidated balance sheets and statements
of capitalization of UniSource Energy Corporation and its subsidiaries (the
Company) and Tucson Electric Power Company and its subsidiaries (TEP) as of
December 31, 1997 and 1996, and the related consolidated statements of
income, changes in stockholders' equity (deficit), and cash flows for each of
the three years in the period ended December 31, 1997.  These financial
statements are the responsibility of the Company's and TEP's management.  Our
responsibility is to express an opinion on these financial statements based
on our audits.

We conducted our audits in accordance with generally accepted auditing
standards.  Those standards require that we plan and perform the audit to
obtain reasonable assurance about whether the financial statements are free
of material misstatement.  An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements.
An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation.  We believe that our audits provide a
reasonable basis for our opinion.

In our opinion, such consolidated financial statements present fairly, in all
material respects, the financial position of the Company and TEP at December
31, 1997 and 1996, and the results of their operations and their cash flows
for each of the three years in the period ended December 31, 1997 in
conformity with generally accepted accounting principles.

DELOITTE & TOUCHE LLP

Tucson, Arizona
February 23, 1998
               




UNISOURCE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF INCOME              Years Ended December 31,
                                             1997        1996       1995
                                               - Thousands of Dollars -
Operating Revenues
 Retail Customers                        $ 624,221   $ 611,564   $ 574,925
 Amortization of MSR Option Gain
  Regulatory Liability                       8,105      20,053      20,053
 Sales for Resale                           97,567      84,256      75,591
                                         ----------  ----------  ----------
    Total Operating Revenues               729,893     715,873     670,569
                                         ----------  ----------  ----------
Operating Expenses
 Fuel and Purchased Power                  216,163     208,808     167,989
 Capital Lease Expense                     103,914     104,087     105,368
 Amortization of Springerville
  Unit 1 Allowance                         (28,037)    (29,090)    (28,432)
 Other Operations                          107,199      97,555      99,883
 Maintenance and Repairs                    36,657      36,449      41,801
 Depreciation and Amortization              86,405      98,246      93,136
 Taxes Other Than Income Taxes              51,339      61,902      58,733
 Voluntary Severance Plan Expense - Net      2,933      10,555           -
 Income Taxes                               19,297       9,795       8,920
                                         ----------  ----------  ----------
    Total Operating Expenses               595,870     598,307     547,398
                                         ----------  ----------  ----------
      Operating Income                     134,023     117,566     123,171
                                         ----------  ----------  ----------
Other Income (Deductions)
 Income Taxes                               41,401      91,950      29,356
 Reversal of Loss Provision                 10,154       8,472           -
 Interest Income                             8,565       6,271       8,222
 Deferred Springerville Unit 2 Carrying
  Costs                                          -         286       1,127
 Other Income (Deductions)                  (6,370)     (1,020)      2,826
                                         ----------  ----------  ----------
    Total Other Income (Deductions)         53,750     105,959      41,531
                                         ----------  ----------  ----------
Interest Expense
 Long-Term Debt                             63,573      59,647      69,174
 Interest Imputed on Losses Recorded at
  Present Value                             32,657      32,599      32,633
 Other Interest Expense                      7,971      10,427       7,990
                                         ----------  ----------  ----------
    Total Interest Expense                 104,201     102,673     109,797
                                         ----------  ----------  ----------
Net Income                               $  83,572   $ 120,852   $  54,905
                                         ==========  ==========  ==========
Average Shares of
 Common Stock Outstanding (000)             32,138      32,136      32,138
                                         ==========  ==========  ==========
Basic Earnings per Share                 $    2.60   $    3.76   $    1.71
                                         ==========  ==========  ==========
Diluted Earnings per Share               $    2.59   $    3.75   $    1.70
                                         ==========  ==========  ==========


See Notes to Consolidated Financial Statements.

UNISOURCE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS             Years Ended December 31,
                                                1997      1996      1995
                                               - Thousands of Dollars -
Cash Flows from Operating Activities
  Cash Receipts from Retail Customers         $664,294  $653,933  $616,064
  Cash Receipts from Sales for Resale           96,569    80,123    80,415
  Fuel and Purchased Power Costs Paid         (203,713) (180,134) (167,672)
  Wages Paid, Net of Amounts Capitalized       (61,369)  (73,184)  (63,412)
  Payment of Other Operations and
   Maintenance Costs                           (83,814)  (76,529)  (75,504)
  Capital Lease Interest Paid                  (83,019)  (84,383)  (83,986)
  Interest Paid, Net of Amounts Capitalized    (65,848)  (70,275)  (78,743)
  Taxes Paid, Net of Amounts Capitalized       (99,126) (103,079) (120,759)
  Contract Termination Fee Paid                (40,000)        -         -
  Emission Allowance Inventory Purchases       (11,503)  (12,340)   (4,190)
  Emission Allowance Inventory Sales                 -    14,710    11,255
  Interest Received                              8,152     6,342     7,882
  Income Taxes Paid                               (984)   (1,566)   (1,960)
  Other                                          4,751    (2,351)        -
                                              --------- --------- ---------
    Net Cash Flows - Operating Activities      124,390   151,267   119,390
                                              --------- --------- ---------
Cash Flows from Investing Activities
  Construction Expenditures                    (71,420)  (66,519)  (59,097)
  Purchase of Debt Securities                        -         -   (17,697)
  Investments in and Loans to Joint Ventures    (4,998)   (9,173)  (12,429)
  Other Investments - Net                        1,583       240     3,321
                                              --------- --------- ---------
    Net Cash Flows - Investing Activities      (74,835)  (75,452)  (85,902)
                                              --------- --------- ---------
Cash Flows from Financing Activities
  Proceeds from Issuance of Long-Term Debt     379,270    31,400         -
  Undrawn Long-Term Debt Proceeds Held by
   Trustee                                      (5,309)        -         -
  Proceeds from Borrowings Under the
   Renewable Term Loan                               -    14,000         -
  Payments to Retire Long-Term Debt           (357,310)  (26,275)  (36,507)
  Payments on Renewable Term Loan              (31,000)  (14,000) (143,060)
  Payments to Retire Capital Lease Obligations (13,229)  (36,292)  (17,231)
  Payments for Credit Agreement and Debt
   Issuance Costs                               (7,470)     (804)        -
  Other                                          1,458     1,353       252
                                              --------- --------- ---------
    Net Cash Flows - Financing Activities      (33,590)  (30,618) (196,546)
                                              --------- --------- ---------
Net Increase (Decrease) in
 Cash and Cash Equivalents                      15,965    45,197  (163,058)
Cash and Cash Equivalents, Beginning of Year   130,291    85,094   248,152
                                              --------- --------- ---------
Cash and Cash Equivalents, End of Year        $146,256  $130,291  $ 85,094
                                              ========= ========= =========

See Notes to Consolidated Financial Statements.


UNISOURCE ENERGY CORPORATION
CONSOLIDATED BALANCE SHEETS

                                                         December 31,
                                                       1997        1996
                                                   - Thousands of Dollars -

ASSETS
Utility Plant
  Plant in Service                                  $2,194,150  $2,129,205
  Utility Plant Under Capital Leases                   893,064     893,064
  Construction Work in Progress                         72,404      74,210
                                                    ----------- -----------
    Total Utility Plant                              3,159,618   3,096,479
  Less Accumulated Depreciation and Amortization      (982,621)   (922,947)
  Less Accumulated Amortization of Capital Leases      (73,728)    (56,240)
  Less Springerville Unit 1 Allowance                 (167,756)   (163,388)
                                                    ----------- -----------
    Total Utility Plant - Net                        1,935,513   1,953,904
                                                    ----------- -----------
Investments and Other Property                          78,772      69,289
                                                    ----------- -----------
Current Assets
  Cash and Cash Equivalents                            146,256     130,291
  Accounts Receivable                                   71,225      65,905
  Materials and Fuel                                    34,005      30,356
  Deferred Income Taxes - Current                       14,910      10,223
  Other                                                 23,653      14,026
                                                    ----------- -----------
    Total Current Assets                               290,049     250,801
                                                    ----------- -----------
Deferred Debits - Regulatory Assets
  Income Taxes Recoverable Through Future Rates        170,034     173,731
  Deferred Springerville Common Facility Costs          58,222      60,762
  Deferred Contract Termination Fee                     48,077           -
  Deferred Springerville Unit 2 Costs                   11,590      21,260
  Deferred Lease Expense                                11,571      15,067
  Other Deferred Regulatory Assets                      11,089       8,004
Deferred Debits - Other                                 19,492      15,723
                                                    ----------- -----------
    Total Deferred Debits                              330,075     294,547
                                                    ----------- -----------
Total Assets                                        $2,634,409  $2,568,541
                                                    =========== ===========

See Notes to Consolidated Financial Statements.


UNISOURCE ENERGY CORPORATION
CONSOLIDATED BALANCE SHEETS

                                                         December 31,
                                                       1997        1996
                                                   - Thousands of Dollars -
CAPITALIZATION AND OTHER LIABILITIES
Capitalization
  Common Stock Equity                               $  216,878  $  133,288
  Capital Lease Obligations                            890,257     895,867
  Long-Term Debt                                     1,215,120   1,223,025
                                                    ----------- -----------
    Total Capitalization                             2,322,255   2,252,180
                                                    ----------- -----------

Current Liabilities
  Short-Term Debt                                            -       3,567
  Current Obligations Under Capital Leases              14,552      10,383
  Current Maturities of Long-Term Debt                     500       1,635
  Accounts Payable                                      34,909      28,806
  Interest Accrued                                      64,812      57,404
  Taxes Accrued                                         24,397      24,007
  Contract Termination Fee Payable                      10,000           -
  Other                                                 19,051      15,614
                                                    ----------- -----------
    Total Current Liabilities                          168,221     141,416
                                                    ----------- -----------

Deferred Credits and Other Liabilities
  Deferred Income Taxes - Noncurrent                    77,606      96,422
  Accumulated Deferred Investment Tax Credits
   Regulatory Liability                                 11,905      15,188
  MSR Option Gain Regulatory Liability                       -       7,853
  Emission Allowance Gain Regulatory Liability          17,591      17,596
  Other                                                 36,831      37,886
                                                    ----------- -----------
    Total Deferred Credits and Other Liabilities       143,933     174,945
                                                    ----------- -----------
Commitments and Contingencies (Note 7)
Total Capitalization and Other Liabilities          $2,634,409  $2,568,541
                                                    =========== ===========


See Notes to Consolidated Financial Statements.


UNISOURCE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF CAPITALIZATION
                                                          December 31,
                                                        1997        1996
COMMON STOCK EQUITY                                 - Thousands of Dollars -
 Common Stock--No Par Value    1997         1996
                           -----------  -----------
  Shares Authorized         75,000,000   75,000,000
  Shares Outstanding        32,139,434   32,138,491
  Warrants Outstanding*              -            - $  638,904  $  638,886
 Accumulated Deficit                                  (422,026)   (505,598)
                                                    ----------- -----------
    Total Common Stock Equity                          216,878     133,288
                                                    ----------- -----------
PREFERRED STOCK
 No Par Value, 1,000,000 Shares Authorized,
 None Outstanding                                            -           -

CAPITAL LEASE OBLIGATIONS
 Springerville Unit 1                                  483,421     474,523
 Springerville Coal Handling Facilities                168,959     172,424
 Springerville Common Facilities                       127,986     131,743
 Irvington Unit 4                                      121,150     122,818
 Other Leases                                            3,293       4,742
                                                    ----------- -----------
   Total Capital Lease Obligations                     904,809     906,250
   Less Current Maturities                             (14,552)    (10,383)
                                                    ----------- -----------
    Total Long-Term Capital Lease Obligations          890,257     895,867
                                                    ----------- -----------
LONG-TERM DEBT
                                        Interest
 Issue                     Maturity        Rate
- -----------------------------------------------------
First Mortgage Bonds
  Corporate               1999 - 2009 7.55% to 8.50%   165,000     165,000
                             2000         12.22%        78,750      78,750
  Industrial Development  2006 - 2021 6.10% to 7.50%
   Revenue Bonds (IDBs)               and variable***  164,000     248,400
Second Mortgage Bonds
  Industrial Development
   Revenue Bonds (IDBs)** 2018 - 2022 variable***      428,600      50,000
Other Secured IDBs****    2018 - 2022 variable***            -     603,600
Unsecured IDBs            2020 - 2032 6.00% to 7.13%   379,270      47,910
Renewable Term Loan          1997     variable***            -      31,000
                                                    ----------- -----------
   Total Stated Principal Amount                     1,215,620   1,224,660
   Less Current Maturities                                (500)     (1,635)
                                                    ----------- -----------
    Total Long-Term Debt                             1,215,120   1,223,025
                                                    ----------- -----------
Total Capitalization                                $2,322,255  $2,252,180
                                                    =========== ===========




(continued on next page)

UNISOURCE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF CAPITALIZATION (Continued)


*    There are 12,054,278 Warrants outstanding to purchase common stock of
     TEP, a wholly-owned subsidiary of the Company.  The exercise terms are 5
     Warrants plus an exercise price of $16 for each share of TEP common
     stock.  The Warrants are currently exercisable and expire in 2002.

**   These IDBs outstanding at December 31, 1997 are backed by LOCs under
     TEP's new Credit Agreement.  TEP's obligations under the new Credit
     Agreement are secured with Second Mortgage Bonds.  See Note 5.  The $50
     million in Second Mortgage Bonds at December 31, 1996 reflects security
     provided for LOCs under the MRA.

***  Interest rates on variable rate tax-exempt debt (IDBs) ranged from 2.50%
     to 5.20% during 1997 and 1996, and averaged 3.70% in 1997 and 3.50% in
     1996.  Interest rates on the Renewable Term Loan ranged from 5.80% to
     6.40% in 1997 and 1996, and averaged 6.00% in 1997 and 1996.

**** These IDBs outstanding at December 31, 1996 were backed by LOCs under
     the MRA.  The MRA was secured in part by a lien on Springerville Unit 2,
     title to which is held by San Carlos.


   See Notes to Consolidated Financial Statements.


UNISOURCE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT)


                                                   Accumulated
                                       Common      Earnings
                                       Stock       (Deficit)
                                ------------------------------------
                                      - Thousands of Dollars -

Balances at December 31, 1994         $639,122     $(681,355)
1995 Net Income                              -        54,905
10,509 Shares Purchased by Deferred
 Compensation Trust                       (184)            -
                                      ---------    ----------
Balances at December 31, 1995          638,938      (626,450)
1996 Net Income                              -       120,852
2,886 Shares Issued Under Stock
 Option Plans                               47             -
2,265 Shares Distributed by Deferred
 Compensation Trust                         33             -
3,881 Additional Shares Issued Under
 Reverse Stock Split for Shareholders
 with Fractional Shares                      -             -
8,802 Shares Purchased by Deferred
 Compensation Trust                       (132)            -
                                      ---------    ----------
Balances at December 31, 1996          638,886      (505,598)
1997 Net Income                              -        83,572
6,630 Shares Issued Under Stock
 Option Plans                              108             -
3,996 Shares Distributed by Deferred
 Compensation Trust                         62             -
9,683 Shares Purchased by Deferred
 Compensation Trust                       (152)            -
                                      ---------    ----------
Balances at December 31, 1997         $638,904     $(422,026)
                                      =========    ==========

See Note 6. Dividend and Loan Restrictions for discussion of restrictions on
the Company's ability to pay dividends.

See Notes to Consolidated Financial Statements.


TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED STATEMENTS OF INCOME              Years Ended December 31,
                                             1997        1996       1995
                                               - Thousands of Dollars -
Operating Revenues
 Retail Customers                        $ 624,221   $ 611,564   $ 574,925
 Amortization of MSR Option Gain
  Regulatory Liability                       8,105      20,053      20,053
 Sales for Resale                           97,567      84,256      75,591
                                         ----------  ----------  ----------
    Total Operating Revenues               729,893     715,873     670,569
                                         ----------  ----------  ----------
Operating Expenses
 Fuel and Purchased Power                  216,163     208,808     167,989
 Capital Lease Expense                     103,914     104,087     105,368
 Amortization of Springerville
  Unit 1 Allowance                         (28,037)    (29,090)    (28,432)
 Other Operations                          107,199      97,555      99,883
 Maintenance and Repairs                    36,657      36,449      41,801
 Depreciation and Amortization              86,405      98,246      93,136
 Taxes Other Than Income Taxes              51,339      61,902      58,733
 Voluntary Severance Plan Expense - Net      2,933      10,555           -
 Income Taxes                               19,297       9,795       8,920
                                         ----------  ----------  ----------
    Total Operating Expenses               595,870     598,307     547,398
                                         ----------  ----------  ----------
      Operating Income                     134,023     117,566     123,171
                                         ----------  ----------  ----------
Other Income (Deductions)
 Income Taxes                               41,401      91,950      29,356
 Reversal of Loss Provision                 10,154       8,472           -
 Interest Income                             8,565       6,271       8,222
 Deferred Springerville Unit 2 Carrying
  Costs                                          -         286       1,127
 Other Income (Deductions)                  (6,370)     (1,020)      2,826
                                         ----------  ----------  ----------
    Total Other Income (Deductions)         53,750     105,959      41,531
                                         ----------  ----------  ----------
Interest Expense
 Long-Term Debt                             63,573      59,647      69,174
 Interest Imputed on Losses Recorded at
  Present Value                             32,657      32,599      32,633
 Other Interest Expense                      7,971      10,427       7,990
                                         ----------  ----------  ----------
    Total Interest Expense                 104,201     102,673     109,797
                                         ----------  ----------  ----------
Net Income                               $  83,572   $ 120,852   $  54,905
                                         ==========  ==========  ==========


See Notes to Consolidated Financial Statements.


TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED STATEMENTS OF CASH FLOWS             Years Ended December 31,
                                                1997      1996      1995
                                               - Thousands of Dollars -
Cash Flows from Operating Activities
  Cash Receipts from Retail Customers         $664,294  $653,933  $616,064
  Cash Receipts from Sales for Resale           96,569    80,123    80,415
  Fuel and Purchased Power Costs Paid         (203,713) (180,134) (167,672)
  Wages Paid, Net of Amounts Capitalized       (61,369)  (73,184)  (63,412)
  Payment of Other Operations and
   Maintenance Costs                           (83,814)  (76,529)  (75,504)
  Capital Lease Interest Paid                  (83,019)  (84,383)  (83,986)
  Interest Paid, Net of Amounts Capitalized    (65,848)  (70,275)  (78,743)
  Taxes Paid, Net of Amounts Capitalized       (99,126) (103,079) (120,759)
  Contract Termination Fee Paid                (40,000)        -         -
  Emission Allowance Inventory Purchases       (11,503)  (12,340)   (4,190)
  Emission Allowance Inventory Sales                 -    14,710    11,255
  Interest Received                              8,152     6,342     7,882
  Income Taxes Paid                               (984)   (1,566)   (1,960)
  Other                                          4,751    (2,351)        -
                                              --------- --------- ---------
    Net Cash Flows - Operating Activities      124,390   151,267   119,390
                                              --------- --------- ---------
Cash Flows from Investing Activities
  Construction Expenditures                    (71,420)  (66,519)  (59,097)
  Purchase of Debt Securities                        -         -   (17,697)
  Investments in and Loans to Joint Ventures    (4,998)   (9,173)  (12,429)
  Other Investments - Net                        1,583       240     3,321
                                              --------- --------- ---------
    Net Cash Flows - Investing Activities      (74,835)  (75,452)  (85,902)
                                              --------- --------- ---------
Cash Flows from Financing Activities
  Proceeds from Issuance of Long-Term Debt     379,270    31,400         -
  Undrawn Long-Term Debt Proceeds Held by
   Trustee                                      (5,309)        -         -
  Proceeds from Borrowings Under the
   Renewable Term Loan                               -    14,000         -
  Payments to Retire Long-Term Debt           (357,310)  (26,275)  (36,507)
  Payments on Renewable Term Loan              (31,000)  (14,000) (143,060)
  Payments to Retire Capital Lease Obligations (13,229)  (36,292)  (17,231)
  Payments for Credit Agreement and Debt
   Issuance Costs                               (7,470)     (804)        -
  Other                                          1,458     1,353       252
                                              --------- --------- ---------
    Net Cash Flows - Financing Activities      (33,590)  (30,618) (196,546)
                                              --------- --------- ---------
Net Increase (Decrease) in
 Cash and Cash Equivalents                      15,965    45,197  (163,058)
Cash and Cash Equivalents, Beginning of Year   130,291    85,094   248,152
                                              --------- --------- ---------
Cash and Cash Equivalents, End of Year        $146,256  $130,291  $ 85,094
                                              ========= ========= =========

See Notes to Consolidated Financial Statements.


TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED BALANCE SHEETS

                                                         December 31,
                                                       1997        1996
                                                   - Thousands of Dollars -
ASSETS
Utility Plant
  Plant in Service                                  $2,194,150  $2,129,205
  Utility Plant Under Capital Leases                   893,064     893,064
  Construction Work in Progress                         72,404      74,210
                                                    ----------- -----------
    Total Utility Plant                              3,159,618   3,096,479
  Less Accumulated Depreciation and Amortization      (982,621)   (922,947)
  Less Accumulated Amortization of Capital Leases      (73,728)    (56,240)
  Less Springerville Unit 1 Allowance                 (167,756)   (163,388)
                                                    ----------- -----------
    Total Utility Plant - Net                        1,935,513   1,953,904
                                                    ----------- -----------
Investments and Other Property                          78,772      69,289
                                                    ----------- -----------
Current Assets
  Cash and Cash Equivalents                            146,256     130,291
  Accounts Receivable                                   71,225      65,905
  Materials and Fuel                                    34,005      30,356
  Deferred Income Taxes - Current                       14,910      10,223
  Other                                                 23,653      14,026
                                                    ----------- -----------
    Total Current Assets                               290,049     250,801
                                                    ----------- -----------
Deferred Debits - Regulatory Assets
  Income Taxes Recoverable Through Future Rates        170,034     173,731
  Deferred Springerville Common Facility Costs          58,222      60,762
  Deferred Contract Termination Fee                     48,077           -
  Deferred Springerville Unit 2 Costs                   11,590      21,260
  Deferred Lease Expense                                11,571      15,067
  Other Deferred Regulatory Assets                      11,089       8,004
Deferred Debits - Other                                 19,492      15,723
                                                    ----------- -----------
    Total Deferred Debits                              330,075     294,547
                                                    ----------- -----------
Total Assets                                        $2,634,409  $2,568,541
                                                    =========== ===========

See Notes to Consolidated Financial Statements.

TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED BALANCE SHEETS


                                                         December 31,
                                                       1997        1996
                                                   - Thousands of Dollars -
CAPITALIZATION AND OTHER LIABILITIES
Capitalization
  Common Stock Equity                               $  216,878  $  133,288
  Capital Lease Obligations                            890,257     895,867
  Long-Term Debt                                     1,215,120   1,223,025
                                                    ----------- -----------
    Total Capitalization                             2,322,255   2,252,180
                                                    ----------- -----------

Current Liabilities
  Short-Term Debt                                            -       3,567
  Current Obligations Under Capital Leases              14,552      10,383
  Current Maturities of Long-Term Debt                     500       1,635
  Accounts Payable                                      34,909      28,806
  Interest Accrued                                      64,812      57,404
  Taxes Accrued                                         24,397      24,007
  Contract Termination Fee Payable                      10,000           -
  Other                                                 19,051      15,614
                                                    ----------- -----------
    Total Current Liabilities                          168,221     141,416
                                                    ----------- -----------

Deferred Credits and Other Liabilities
  Deferred Income Taxes - Noncurrent                    77,606      96,422
  Accumulated Deferred Investment Tax Credits
   Regulatory Liability                                 11,905      15,188
  MSR Option Gain Regulatory Liability                       -       7,853
  Emission Allowance Gain Regulatory Liability          17,591      17,596
  Other                                                 36,831      37,886
                                                    ----------- -----------
    Total Deferred Credits and Other Liabilities       143,933     174,945
                                                    ----------- -----------
Commitments and Contingencies (Note 7)
Total Capitalization and Other Liabilities          $2,634,409  $2,568,541
                                                    =========== ===========




TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED STATEMENTS OF CAPITALIZATION
                                                          December 31,
                                                        1997        1996
COMMON STOCK EQUITY                                 - Thousands of Dollars -
 Common Stock--No Par Value    1997         1996
                           -----------  -----------
  Shares Authorized         75,000,000   75,000,000
  Shares Outstanding        32,139,434   32,138,491
  Warrants Outstanding*      2,410,856    2,410,856 $  645,261  $  645,243
 Capital Stock Expense                                  (6,357)     (6,357)
 Accumulated Deficit                                  (422,026)   (505,598)
                                                    ----------- -----------
    Total Common Stock Equity                          216,878     133,288
                                                    ----------- -----------
PREFERRED STOCK
 No Par Value,1,000,000 Shares Authorized,
 None Outstanding                                            -           -

CAPITAL LEASE OBLIGATIONS
 Springerville Unit 1                                  483,421     474,523
 Springerville Coal Handling Facilities                168,959     172,424
 Springerville Common Facilities                       127,986     131,743
 Irvington Unit 4                                      121,150     122,818
 Other Leases                                            3,293       4,742
                                                    ----------- -----------
   Total Capital Lease Obligations                     904,809     906,250
   Less Current Maturities                             (14,552)    (10,383)
                                                    ----------- -----------
    Total Long-Term Capital Lease Obligations          890,257     895,867
                                                    ----------- -----------
LONG-TERM DEBT
                                         Interest
 Issue                     Maturity        Rate
- -----------------------------------------------------
First Mortgage Bonds
  Corporate               1999 - 2009 7.55% to 8.50%   165,000     165,000
                             2000         12.22%        78,750      78,750
  Industrial Development  2006 - 2021 6.10% to 7.50%
   Revenue Bonds (IDBs)               and variable***  164,000     248,400
Second Mortgage Bonds
  Industrial Development
   Revenue Bonds (IDBs)** 2018 - 2022 variable***      428,600      50,000
Other Secured IDBs****    2018 - 2022 variable***            -     603,600
Unsecured IDBs            2020 - 2032 6.00% to 7.13%   379,270      47,910
Renewable Term Loan          1997     variable***            -      31,000
                                                    ----------- -----------
   Total Stated Principal Amount                     1,215,620   1,224,660
   Less Current Maturities                                (500)     (1,635)
                                                    ----------- -----------
    Total Long-Term Debt                             1,215,120   1,223,025
                                                    ----------- -----------
Total Capitalization                                $2,322,255  $2,252,180
                                                    =========== ===========


(continued on next page)


TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED STATEMENTS OF CAPITALIZATION (Continued)


*    There are 12,054,278 Warrants outstanding to purchase common stock of
     TEP.  The exercise terms are 5 Warrants plus an exercise price of $16
     for each share of TEP common stock.  The Warrants are currently
     exercisable and expire in 2002.

**   These IDBs outstanding at December 31, 1997 are backed by LOCs under
     TEP's new Credit Agreement.  TEP's obligations under the new Credit
     Agreement are secured with Second Mortgage Bonds.  See Note 5.  The $50
     million in Second Mortgage Bonds at December 31, 1996 reflects
     security provided for LOCs under the MRA.

***  Interest rates on variable rate tax-exempt debt (IDBs) ranged from 2.50%
     to 5.20% during 1997 and 1996, and averaged 3.70% in 1997 and 3.50% in
     1996.  Interest rates on the Renewable Term Loan ranged from 5.80% to
     6.40% in 1997 and 1996, and averaged 6.00% in 1997 and 1996.

**** These IDBs outstanding at December 31, 1996 were backed by LOCs under
     the MRA.  The MRA was secured in part by a lien on Springerville Unit 2,
     title to which is held by San Carlos.


   See Notes to Consolidated Financial Statements.


TUCSON ELECTRIC POWER COMPANY
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY (DEFICIT)


                                                   Capital   Accumulated
                                       Common      Stock      Earnings
                                       Stock       Expense    (Deficit)
                                      ----------------------------------
                                           - Thousands of Dollars -

Balances at December 31, 1994         $645,479    $(6,357)   $(681,355)
1995 Net Income                              -          -       54,905
10,509 Shares Purchased by Deferred
 Compensation Trust                       (184)         -            -
                                      ---------   --------   ----------
Balances at December 31, 1995          645,295     (6,357)    (626,450)
1996 Net Income                              -          -      120,852
2,886 Shares Issued Under Stock
 Option Plans                               47          -            -
2,265 Shares Distributed by Deferred
 Compensation Trust                         33          -            -
3,881 Additional Shares Issued Under
 Reverse Stock Split for Shareholders
 with Fractional Shares                      -          -            -
8,802 Shares Purchased by Deferred
 Compensation Trust                       (132)         -            -
                                      ---------   --------   ----------
Balances at December 31, 1996          645,243     (6,357)    (505,598)
1997 Net Income                              -          -       83,572
6,630 Shares Issued Under Stock
 Option Plans                              108          -            -
3,996 Shares Distributed by Deferred
 Compensation Trust                         62          -            -
9,683 Shares Purchased by Deferred
 Compensation Trust                       (152)         -            -
                                      ---------   --------   ----------
Balances at December 31, 1997         $645,261    $(6,357)   $(422,026)
                                      =========   ========   ==========

See Note 6. Dividend and Loan Restrictions for discussion of restrictions on
the ability to pay dividends.

See Notes to Consolidated Financial Statements.


UNISOURCE ENERGY, TEP AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1.  NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
- ----------------------------------------------------------------------------

  NATURE OF OPERATIONS

     UniSource Energy Corporation (UniSource Energy or the Company) is an
Arizona corporation, incorporated in 1995, and an exempt holding company
under the Public Utility Holding Company Act.  The Company has no significant
operations of its own, holding instead the stock of Tucson Electric Power
Company (TEP) and other energy related businesses.  TEP, a public utility
incorporated in Arizona since 1963, is the Company's largest operating
subsidiary and represents substantially all of the Company's assets.

     As a regulated public utility, TEP is engaged in the business of
generation, transmission, distribution and sale of electricity.  TEP's retail
service area encompasses 1,155 square miles in Pima and Cochise counties in
Southern Arizona.  TEP also engages in sales for resale to other utilities
and other power marketing entities primarily located in Arizona, California,
Colorado, New Mexico, Oregon, Texas and Utah.  Approximately 60% of TEP's
work force is subject to a collective bargaining unit.  The collective
bargaining agreement in place at December 31, 1997 terminates on November 30,
1998.

  BASIS OF PRESENTATION

     On January 1, 1998, TEP and the Company completed a statutory share
exchange, pursuant to which the outstanding common stock of TEP was exchanged
on a share-for-share basis for the common stock of the Company.  The share
exchange was effected pursuant to the terms of an Agreement and Plan of
Exchange dated as of March 20, 1995 between the Company and TEP and was
approved by TEP's shareholders in 1995.  The formation of the holding company
was approved by the FERC and by the ACC in 1997.

     Following the share exchange, in January 1998 TEP transferred the stock
of its subsidiary, MEH Corporation (MEH), to UniSource Energy in exchange for
a $95 million ten-year promissory note from UniSource Energy.  MEH is the
parent company of Advanced Energy Technologies, Inc., Millennium Energy
Holdings, Inc., Nations Energy Corporation and Southwest Energy Solutions,
Inc.  In accordance with the ACC order authorizing the formation of the
holding company, the note bears interest at 9.78%.

     The Company's consolidated financial statements presented herein include
the financial results of operations of the Company and its wholly-owned
subsidiaries as if the Company's current holding company structure had
existed in all periods shown.  The transfer by TEP of the stock of its
subsidiary, MEH Corporation, and the promissory note recorded by TEP in
January 1998 are not reflected in these financial statements.  For the
periods presented the Company's operations and those of TEP are substantially
the same.

     All significant intercompany balances and transactions have been
eliminated in consolidation.  The equity method is used to account for all
investments in 50% or less owned limited liability corporations, partnerships
and joint ventures.  All non-utility operating transactions are included in
Other Income (Deductions) in the Consolidated Statements of Income.

  USE OF ESTIMATES

     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period.  Actual results could differ from those estimates.

  REGULATION

     TEP's utility accounting practices and electricity rates are subject to
regulation by the ACC and, in certain areas, by the FERC.

ACCOUNTING FOR THE EFFECTS OF REGULATION

  Accounting Implications

     TEP prepares its financial statements in accordance with the provisions
of FAS 71.  A regulated enterprise can prepare its financial statements in
accordance with FAS 71 only if (i) the enterprise's rates for regulated
services are established by or subject to approval by an independent third-
party regulator, (ii) the regulated rates are designed to recover the
enterprise's costs of providing the regulated services and (iii) in view of
demand for the regulated services and the level of competition, it is
reasonable to assume that rates set at levels that will recover the
enterprise's costs can be charged to and collected from customers.  FAS 71
requires a cost-based, rate-regulated enterprise to reflect the impact of
regulatory decisions in its financial statements.  In certain circumstances,
FAS 71 requires that certain costs and/or obligations (such as incurred costs
not currently recovered through rates, but expected to be so recovered in the
future) be reflected in a deferral account (regulatory asset) in the balance
sheet and not be reflected in the statement of income or loss until matching
revenues are recognized.  It is TEP's policy to assess the recoverability of
costs recognized as regulatory assets and the ability to continue to account
for its activities in accordance with FAS 71, based on each rate action and
the criteria set forth in FAS 71.

     The Consolidated Balance Sheets contain certain amounts solely as a
result of the application of FAS 71:

                                                            December 31,
                   Assets (Liabilities)                     1997    1996
                   --------------------                     -----   -----
                                                      - Millions of Dollars -
       Income Taxes Recoverable Through Future Rates        $170    $174
       Deferred Springerville Common Facility Costs           58      61
       Deferred Contract Termination Fee                      48       -
       Deferred Springerville Unit 2 Costs                    12      21
       Deferred Lease Expense                                 12      15
       Other Deferred Regulatory Assets                       11       8
       MSR Option Gain Regulatory Liability                    -      (8)
       Accumulated Deferred Investment Tax Credits
        Regulatory Liability                                 (12)    (15)
       Emission Allowance Gain Regulatory Liability          (18)    (18)

     TEP recorded regulatory assets based on prior rate orders issued by the
ACC which provide a mechanism for recovery in regulated rates or historical
rate treatment which provides evidence as to the probability of future rate
recovery.  The material regulatory assets listed above earn a return on
investment through inclusion in rate base and resultant recovery through
sales to retail customers.

      The Consolidated Statements of Income include amounts which reflect the
application of FAS 71:

                                                     Years Ended December 31,
                   Income (Expense)                      1997  1996  1995
                   ----------------                      ----- ----- -----
                                                      - Millions of Dollars -
       Amortization of MSR Option Gain
         Regulatory Liability                            $  8  $ 20  $ 20
       Amortization of Springerville Unit 2
         Rate Synchronization                             (10)  (21)  (14)
       Deferred Fuel and Purchased Power                    -      -   (6)
       Amortization of Deferred Springerville Common
         Facility Costs                                    (3)   (3)   (3)
       Deferred Springerville Unit 2 Carrying Costs         -     -     1
       Investment Tax Credit Amortization                   3     4     5
       Interest Imputed on Loss (MSR Option Gain
         Regulatory Liability) Recorded at Present Value    -    (2)   (4)
       Amortization of Deferred Contract Termination Fee   (2)    -     -

     If TEP had not applied the provisions of FAS 71 in these years, each of
these amounts included in the Consolidated Statements of Income would have
been reflected in the Consolidated Statements of Income or Loss in prior
periods, except for two items which would not have been recorded:  1) the
amortization of the MSR Option Gain Regulatory Liability, including interest
imputed on the loss recorded at present value; and  2) the Springerville Unit
2 carrying cost deferrals.  Lease expense relating to the capital leases,
while the same over the life of the leases, would be recognized at different
annual amounts if TEP were to discontinue the application of FAS 71.  See
Utility Plant Under Capital Leases below.

  Potential Discontinuation of Application of FAS 71 in the Future

     If at some point in the future TEP determines that all or a portion of
its regulated operations no longer meet the criteria for continued
application of FAS 71, TEP would be required to adopt the provisions of FAS
101 for that portion of the operations for which FAS 71 no longer applied.
As of the date of adoption of FAS 101, TEP would be required (unless
alternative regulatory recovery mechanisms were provided) to write off its
regulatory assets and liabilities and would be precluded in subsequent
periods from creating regulatory assets by deferring incurred costs expected
to be recovered through rates in the future.  Based on the balances of the
regulatory assets and liabilities at December 31, 1997, TEP estimates that
future adoption of FAS 101 if applied to all of the regulated operations,
would result in an extraordinary loss of $181 million, which includes a
reduction for the related income tax benefit of $100 million.  Cash flows
would not be affected by the adoption of FAS 101.

     At the present time, TEP recovers the costs of its plant assets through
its regulated revenues.  If in the future TEP discontinues accounting
according to the provisions of FAS 71, TEP would also need to consider
whether the markets in which it is then selling power will allow recovery of
the costs of its plant assets.  If at that time market prices are not
expected to allow TEP to recover the costs of its plant assets, additional
write-downs may be required in accordance with the provisions of FAS 121.
TEP is presently unable to predict the amounts, if any, of potential future
write-downs attributable to the provisions of FAS 121 under such
circumstances.

  Recent Events That May Impact TEP's Application of FAS 71

     In December 1996, the ACC voted to adopt rules on retail electric
competition in Arizona.  However, the ACC has not yet adopted specific
guidelines for quantifying unmitigated stranded costs, including the methods
used to identify and value jurisdictional assets and obligations. In February
1998, the ACC held hearings regarding stranded costs, including, but not
limited to, comparisons of methods of computation of stranded costs and the
appropriate level of stranded costs for which recovery should be authorized.
The hearing officer is expected to issue a recommended order in the second
quarter of 1998.  Following the issuance of the recommended order, the ACC
will determine, following an open meeting, whether to adopt the recommended
order in whole or in part.  The Company is unable to predict whether such
order would provide guidance as to the specific stranded costs allowable as
recoverable by TEP, or whether an additional set of hearings for individual
companies would be needed to determine the amounts recoverable by TEP.  In
addition, in January 1998, legislation was proposed before the Arizona
Legislature regarding the implementation of electric industry competition in
Arizona.  TEP cannot predict the outcome of the proposed legislation or
whether the ACC and the Arizona Legislature will propose other initiatives on
industry restructuring.  TEP, in reliance on previous rate orders, believes
that it will recover the full costs of its investments in utility plant
assets and regulatory assets.  The hearing officer's recommended order or the
order as finally adopted by the ACC may include language that precludes TEP
from continuing to apply FAS 71 to the generation portion of its operations.
If less than full recovery of stranded costs is provided, significant write-
offs of assets may occur (relating to adoption of FAS 101 and application of
FAS 121 as described above).  Approximately 65% of the regulatory assets
described above relate to the generation portion of TEP's operations.

     Further, in response to legislative and other measures being developed
in various states to deregulate the electric generation business, the Company
is aware that the SEC and the EITF have been reviewing the appropriateness of
electric utilities continuing to account for generation transactions in
accordance with FAS 71 in states where such deregulation is beginning to
develop.  In general, the EITF concluded that utilities are no longer subject
to FAS 71 for the generation portion of their business when a deregulation
plan is in place and its terms are known.  The EITF also concluded that
utilities can continue to carry previously recorded regulatory assets
(including those related to generation) on their balance sheets if regulators
have provided a regulated cash flow stream to recover the cost of their
assets.  The application of the EITF consensus to specific factual
circumstances remains unclear.  Based on the consensus issued by the EITF in
May and July 1997, at some point in the future, TEP may be unable to continue
to apply FAS 71 to the generation portion of the business, even if TEP
believes it will recover the full amount of its costs under the ACC
competition phase-in plan.

     The Company and TEP are unable to predict the outcome of these matters.

  TEP UTILITY PLANT

     Utility Plant by major class is as follows:

                                                       December 31,
                                                    1997          1996
                                                 ----------    ----------
                                                 - Thousands of Dollars -
Utility Plant:
 Production Plant                                $1,045,423    $1,019,528
 Transmission Plant                                 471,230       464,115
 Distribution Plant                                 562,336       538,162
 General Plant                                      104,344        95,779
 Intangible Plant                                     9,175        10,608
 Electric Plant Held for Future Use                   1,642         1,013
                                                 ----------    ----------
  Total Utility Plant                            $2,194,150    $2,129,205
                                                 ==========    ==========

     Utility plant is stated at original cost.  In accordance with the
Uniform System of Accounts prescribed by the FERC and accepted by the ACC,
TEP capitalizes an Allowance for Funds Used During Construction (AFDC) based
on the cost of borrowed funds and a reasonable rate upon equity funds used to
finance CWIP, when recovery of such costs from ratepayers is probable.  The
component of AFDC attributable to borrowed funds is presented as a reduction
of Interest Expense.  For 1995 the Consolidated Statement of Income did not
reflect AFDC - Equity as all construction expenditures were deemed under FERC
prescribed rules to be financed with debt.  In 1995, a gross AFDC rate of
5.59% was used for all CWIP.  In 1997 and 1996 the gross AFDC rates for
equity were 1.18% and 0.33% and gross AFDC rates for debt were 4.37% and
3.91%, respectively.

     Depreciation is computed on a straight-line basis at component rates
which are based on the economic lives of the assets.  These component rates,
which are authorized by the ACC, averaged 3.44%, 3.56% and 3.79% in 1997,
1996 and 1995, respectively.  The economic lives for production plant are
based on remaining lives.  The economic lives for transmission plant,
distribution plant, general plant and intangible plant are based on average
lives.  The component rates also reflect estimated removal costs, net of
estimated salvage value.  Minor replacements and repairs are expensed as
incurred.  Retirements of utility plant, together with removal costs less
salvage, are charged to accumulated depreciation.

  TEP UTILITY PLANT UNDER CAPITAL LEASES

     TEP's leases of the Springerville Common Facilities, Springerville Unit
1, Springerville Coal Handling Facilities and Irvington Unit 4 are classified
as capital leases in the Consolidated Balance Sheets.  For rate making
purposes, the ACC treats these leases as operating leases and has allowed for
recovery of the lease costs by straight-line amortization of the total amount
of lease rent payments over the primary term of the leases, except for the
Springerville Coal Handling Facilities Leases.  The Springerville Coal
Handling Facilities Leases are being amortized on a straight-line basis over
the primary term of the leases plus the first optional renewal period of six
years to reflect the recovery period mandated by the ACC.  As a result of the
ACC mandate and application of FAS 71, the amortization of such costs is not
the primary term of the lease in accordance with GAAP.  Interest and
depreciation relating to the leases are recorded as expense on a basis which
reflects the regulatory straight-line treatment.  The amount of lease
amortization incurred for the four above-described leases, as well as TEP's
remaining leases are set forth in the following table:


                                             Years Ended December 31,
                                              1997     1996     1995
                                             -----    -----    -----
                                             - Millions of Dollars -
Lease Amortization:
  Interest                                   $ 95     $ 95      $ 97
  Depreciation                                 17       15        14
                                             ----     ----      ----
    Total Lease Amortization                 $112     $110      $111
                                             ====     ====      ====
Lease Amortization Included In:
  Operating Expenses - Fuel and
   Purchased Power                           $ 10     $  9      $ 10
  Operating Expenses - Capital Lease Expense  104      104       105
  Balance Sheet - Deferred Lease Expense       (2)      (3)       (4)
                                             -----    -----     ----
    Total Lease Amortization                 $112     $110      $111
                                             =====    =====     ====

     The Deferred Lease Expense of $12 million and $15 million at December
31, 1997 and 1996, respectively, reflects: 1) the cumulative difference
between the straight-line method of amortizing the leases for regulatory
purposes and capital lease amortization as promulgated by GAAP; and 2) the
balance of the deferred costs described under Fuel below.

  SPRINGERVILLE UNIT 1 ALLOWANCE

     In the 1989 Rate Order the ACC limited TEP's recovery through retail
rates of non-fuel expenses of Springerville Unit 1 to a rate of only $15 per
kW per month based on a 360 MW capacity rating.  Such costs averaged
approximately $22 per kW per month during the period 1995 through 1997.  In
1990 and 1992, TEP recorded losses and a Springerville Unit 1 Allowance,
equal to the present value of the excess of TEP's costs estimated to be
incurred through 2014, the end of the primary term of the lease, over $15 per
kW per month using a discount rate of 13%.

     The balance sheet contra asset Springerville Unit 1 Allowance increases
each year by the accrual of interest and decreases by the amount which is
amortized to income as a contra-expense, Amortization of Springerville Unit 1
Allowance.  In 1997, 1996 and 1995, the accrual of such interest was $32.4
million, $30.3 million and $28.2 million, respectively, and the amount
amortized was $28.0 million, $29.1 million and $28.4 million, respectively.
The imputed interest expense associated with this liability, calculated using
a 13% discount rate, is included as part of Interest Imputed on Losses
Recorded at Present Value in the Interest Expense section in the Consolidated
Statements of Income.

  DEFERRED SPRINGERVILLE COMMON FACILITY COSTS

     Deferred Springerville Common Facility Costs are lease costs and
operating costs that TEP incurred for the Springerville Common Facilities
during the period after Springerville Unit 1 was placed in service and before
Springerville Unit 2 was placed in service.  Pursuant to an accounting order
from the ACC, these costs were deferred and are being amortized, as
depreciation, over the primary term of the Springerville Common Facilities
Leases.  The ACC has allowed for the recovery of the deferred costs plus a
return on investment in such deferred costs.

  UTILITY OPERATING REVENUES

     Operating Revenues include accruals for unbilled revenues, thereby
recognizing revenue that is earned, but not billed, at the end of an
accounting period.

  MSR OPTION GAIN REGULATORY LIABILITY

     In the 1989 Rate Order the ACC allocated to retail customers a portion
of the price paid to TEP upon the 1982 sale of an option to purchase a 28.8%
interest in San Juan Unit 4, asserting that such option was related to an
interconnection agreement which TEP also entered into with MSR at that time.
The ACC ordered TEP to recognize the MSR Option Gain by amortizing amounts to
operating revenue through May 1997.  Therefore, in 1990, TEP recorded a loss
and the MSR Option Gain Regulatory Liability, equal to the present value of
the amount to be amortized to operating revenues through May 1997, calculated
using a 13% discount rate.  The MSR Option Gain Regulatory Liability
increased each year by the accrual of interest and decreased by the amount
which was amortized to operating revenues.  In 1997, 1996 and 1995, the
accrual of such interest was $0.3 million, $2.3 million and $4.4 million,
respectively, and the amount amortized was $8.1 million in 1997 and $20.1
million in 1996 and 1995.  The imputed interest expense associated with this
liability, calculated using a 13% discount rate, is included as part of
Interest Imputed on Losses Recorded at Present Value in the Interest Expense
section in the Consolidated Statements of Income.

  FUEL COSTS

     Fuel inventory, primarily coal, is stated on a basis which approximates
weighted average cost.  TEP uses full absorption costing.

     Certain lease and interest costs related to the Springerville Coal
Handling Facilities are accounted for as deferred costs.  These costs are
being amortized to fuel expense on a straight-line basis through the year
2030 pursuant to the 1994 Rate Order.

  INCOME TAXES

     The Income Taxes Recoverable Through Future Rates regulatory asset
consists primarily of the right to recover income taxes relating to
previously flowed-through differences, both timing and permanent, which
provided rate benefits to past ratepayers.

     Reductions in federal income taxes resulting from ITC relating to
utility operations have been deferred.  As authorized by the ACC, these
amounts are amortized over the tax lives of the related property. The  income
tax benefits reflected in the Consolidated Statements of Income for the years
1997, 1996 and 1995 are primarily a result of the recognition of a portion of
the Company's net operating loss carryforwards, as well as ITC amortization.
See Note 3.

     Income taxes are allocated to the subsidiaries based on contributions to
the consolidated tax return liability.

  EMISSION ALLOWANCES

     Purchased Emission Allowances are recorded in a noncurrent inventory
account included in Investments and Other Property on the Consolidated
Balance Sheets.  Emission Allowance inventory is recorded using the weighted
average cost method.  Gains on sales of Emission Allowances are deferred as
Emission Allowance Gain Regulatory Liability in the Consolidated Balance
Sheets and will be amortized as income in 2000 - 2024, the period TEP expects
to use the Emission Allowance inventory to meet EPA regulations.  The
amortization reflects the expected regulatory treatment for the gains.


  FAIR VALUE OF FINANCIAL INSTRUMENTS

     The carrying value and fair value of the financial instruments are as
follows:

                                                December 31,
                                        1997                    1996
                                       ------                  ------
                                Carrying    Fair       Carrying       Fair
                                 Value      Value        Value        Value
                                --------    -----      --------       -----
                                          - Thousands of Dollars -
Assets:
Debt Securities (Included
   in Investments and Other
   Property)                      17,781      19,911      17,748      18,267
Liabilities:
  Short-Term Debt                      -           -      (3,567)     (3,567)
  First Mortgage Bonds:
    Corporate                    243,750     255,928     243,750     252,443
    IDBs
       Variable Rate             100,000     100,000     151,400     151,400
       Fixed Rate                 64,000      64,000      97,000      95,573
  Second Mortgage Bonds:
    IDBs (Variable Rate)         428,600     428,600      50,000      50,000
  Other Secured IDBs (Variable
    Rate)                              -           -     603,600     603,600
  Unsecured IDBs                 379,270     413,694      47,910      47,670
   Renewable Term Loan
     (Variable Rate)                   -           -      31,000      31,000

     TEP intends to hold the investment in Debt Securities to maturity
(January 1, 2013).  Such Debt Securities are stated at amortized cost,
adjusted for the amortization of the discount to maturity, and the fair value
is based on current transactions for the same or similar debt.  The carrying
amount of Short-Term Debt at December 31, 1996 was considered to be a
reasonable estimate of the fair value because of its short maturity.

     The principal amounts of variable rate debt outstanding at December 31,
1997 and 1996 are considered reasonable estimates of their fair value as
these are variable interest rate liabilities.  The fair value of TEP's fixed
rate obligations including the Corporate First Mortgage Bonds, the First
Mortgage Bonds-IDBs (fixed rate) and the Unsecured IDBs was determined by
calculating the present value of the cash flows of each fixed rate
obligation.  The discount rate used for each calculation was a rate
consistent with market yields generally available as of December 1997 for
1997 amounts and December 1996 for 1996 amounts for bonds with similar
characteristics with respect to:  credit rating, time-to-maturity, and the
tax status of the bond coupon for Federal income tax purposes.  The use of
different market assumptions and/or estimation methodologies may yield
different estimated fair value amounts.

  RECLASSIFICATION

  Minor reclassifications have been made to the prior year financial
statements presented to conform to the current year's presentation.

NOTE 2. RATE MATTERS
- -------------------

  SHARED SAVINGS PROPOSAL

     On July 9, 1997, TEP filed with the ACC a request for an annual rate
reduction of $6.8 million (or 1.1%) for retail customers.  This filing is in
the form of a Shared Savings Proposal (SSP) which promotes a sharing of
benefits with customers of cost containment efforts and the mitigation of
potential stranded costs associated with the introduction of retail electric
competition in Arizona.  The cost containment savings were realized primarily
from renegotiated fuel contracts and the Voluntary Severance Program, which
reduced TEP's workforce by approximately 15% (see Note 9).  No date has been
set for formal consideration of the matter by the ACC.

     TEP proposed that additional savings be used to mitigate potential
stranded costs through accelerated amortization of retail excess capacity
deferrals.  Retail excess capacity deferrals represent those operating and
capital costs associated with Springerville Unit 2 capacity, which were
deemed by the ACC to not be recoverable in retail rates prior to the 1994 and
1996 Rate Orders.  Such retail excess capacity deferrals totaled $88.7
million and $93.6 million at December 31, 1997 and 1996, respectively.  Such
deferrals are not reflected in the accompanying Consolidated Balance Sheets
because such retail excess capacity deferrals, while deferred for regulatory
purposes, were not deferred for financial reporting purposes but were
expensed as incurred.  The proposed $7.2 million (after tax) increase in
annual amortization expense for such excess capacity deferrals would decrease
the amortization period from 20 years to 5.6 years as of December 1996.  The
proposed increase in amortization expense would be reflected in TEP's
regulatory accounting records but would have no impact on the expenses
included in TEP's financial accounting statements.

  SPRINGERVILLE COAL CONTRACT TERMINATION FEE

     On June 27, 1997, TEP signed an agreement with the coal supplier for the
Springerville Generating Station to terminate the existing coal supply
contract and enter into a new, more cost effective contract with the same
supplier (see Note 7).  A $50 million termination fee was incurred by TEP and
payable in three installments:  $30 million paid on June 30, 1997; $10
million paid on September 30, 1997; and $10 million due March 31, 1998.

     TEP applied, as part of the SSP, to the ACC requesting that the
termination fee be recorded as a regulatory asset and amortized to fuel
expense over the 13-year term of the new agreement.  On July 29, 1997, the
ACC issued an interim accounting order allowing TEP to defer the $50 million
termination fee as a regulatory asset in the Consolidated Balance Sheet until
the ACC decides whether the $50 million termination fee should be recovered
through retail rates.  The interim accounting order also allowed TEP to begin
amortizing the termination fee to fuel expense.  If the ACC ultimately
disallows recovery, the unamortized portion of the $50 million termination
fee would immediately be expensed.  No date has been set for formal
consideration of the matter by the ACC.

  1996 RATE ORDER

     On March 29, 1996, the ACC authorized a 1.1%, or $6.4 million, increase
in TEP's base rates effective March 31, 1996.  Pursuant to the 1996 Rate
Order, TEP agreed to not seek an increase in base rates before January 1,
2000, subject to conditions specified in such order.

     Prior to the 1996 Rate Order, TEP was not recovering through retail
rates 37.5% of the deferred Springerville Unit 2 rate synchronization costs
which were non-fuel costs of Springerville Unit 2 incurred from January 1,
1991 through October 14, 1991.  Beginning March 31, 1996, these costs are
being amortized over a three-year period in accordance with the 1996 Rate
Order.  These costs are reported in the Consolidated Balance Sheets as
Deferred Springerville Unit 2 Costs.  In addition, the 62.5% of the deferred
Springerville Unit 2 rate synchronization costs that TEP was recovering
through rates pursuant to the 1994 rate order were fully amortized during
1996.  The total amortization of the above costs included in Depreciation and
Amortization on the Consolidated Statements of Income in 1997, 1996 and 1995
amounted to $9.6 million, $21.1 million and $14.1 million, respectively.


NOTE 3.  INCOME TAXES
- ---------------------

     Deferred tax assets (liabilities) are comprised of the following:
                                                   December 31,
                                                1997          1996
                                             -----------   ----------
                                             - Thousands of Dollars -
Gross Deferred Income Tax Liabilities:
  Electric Plant - Net                       $(568,365)    $(568,781)
  Income Taxes Recoverable Through
    Future Rates - Regulatory Asset            (68,680)      (70,173)
  Deferred Inventory Costs                     (21,048)      (21,371)
  Deferred Lease Payments                      (13,273)      (13,916)
  Property Taxes                                (9,450)       (9,970)
  Deferred Springerville Unit 2 Costs           (4,681)       (8,584)
  Other                                        (12,075)       (9,829)
                                             ----------    ----------
   Gross Deferred Income Tax Liability        (697,572)     (702,624)
                                             ----------    ----------
Gross Deferred Income Tax Assets:
  Capital Lease Obligations                    364,445       365,935
  Tax Operating Loss Carryforwards             141,048       163,046
  Springerville Unit 1 Disallowed Costs         67,760        65,974
  Investment Tax Credit Carryforwards           26,396        26,396
  Lease Interest Payable                        18,424        17,328
  Regulatory Deferred Capital Lease Expense     17,163        16,018
  Sales Tax Assessments Not Yet
   Deductible for Tax Purposes                  14,406        13,974
  Investment in Loans and Property               3,522        10,276
  Financial Restructuring Costs Not Yet
   Deductible for Tax Purposes                   7,568         7,782
  Deferred Gain on Emission Allowances           6,926         6,923
  Capital Loss Carryforwards                     4,520         4,634
  Alternative Minimum Tax                        5,594         4,544
  Gain on Financial Restructuring of
   Long-Term Debt                                3,207         4,289
  MSR Option Gain Regulatory Liability               -         3,171
  Other                                         21,831        17,204
                                             ----------    ----------
   Gross Deferred Income Tax Asset             702,810       727,494
   Deferred Tax Assets Valuation Allowance     (67,934)     (111,069)
                                             ----------    ----------
     Net Deferred Income Tax Liability       $ (62,696)    $ (86,199)
                                             ==========    ==========

     The decreases of approximately $43 million and $120 million in the
deferred tax assets valuation allowance in 1997 and 1996, respectively, are
primarily due to revisions in the estimated amount of prior period NOLs that
the Company and TEP believe are likely to reduce future taxable income.  The
utilization of NOL carryforwards also contributed to the 1997 and 1996
decreases.  Additionally, expiring state NOL carryforwards, utilization of
capital loss carryforwards, and a change in the effective tax rate used to
record NOL carryforwards contributed to the 1996 decrease.

     The Company and TEP recognize benefits related to prior period NOLs
based on changes in the estimated amount of prior period NOLs that, in the
Company's and TEP's judgment, are more likely than not to be realized in the
future.  A significant factor, among others, considered in estimating such
amount is the average annual book income before taxes for the prior three
years.  Prior to 1995, the Company and TEP had provided a deferred tax assets
valuation allowance against all the NOL carryforwards, investment tax credit
carryforwards and capital loss carryforwards due to the uncertainty of their
future use.  Because the results from operations have been steadily
improving, the amount the Company and TEP believe is likely to reduce future
taxable income has increased.  Accordingly, the Company and TEP recognized in
1997, 1996 and 1995 income tax benefits of $43 million, $89 million and $23
million, respectively, related to the current and expected future utilization
of federal and state NOL carryforwards.  These benefits are included in
Income Taxes in Other Income (Deductions) in the Consolidated Statements of
Income.  In future periods when such NOLs are used on tax returns, the income
tax expense shown on the Consolidated Statements of Income will not be
reduced to reflect such utilization.

     At December 31, 1997, on a cumulative basis the Company and TEP had
recognized in their income statements the amount of the prior period NOL
benefit that the Company and TEP expect to utilize on future income tax
returns.  Additional amounts of prior period NOL benefit which may be
recognized in the future in the income statement are at present indeterminate
due to the interplay of open tax years for which assessments may be made and
varying expiration dates of federal and state NOL carryforwards.

     The net deferred income tax liability is included in the Consolidated
Balance Sheets in the following accounts:

                                                   December 31,
                                                1997          1996
                                             ----------    ----------
                                             - Thousands of Dollars -

Deferred Income Taxes - Current              $  14,910     $  10,223
Deferred Income Taxes - Noncurrent             (77,606)      (96,422)
                                             ----------    ----------
     Net Deferred Income Tax Liability       $ (62,696)    $ (86,199)
                                             ==========    ==========

     The benefit for income taxes included in the Consolidated Statements of
Income consists of the following:
                                               Years Ended December 31,
                                              1997       1996       1995
                                           ---------- ---------- ----------
                                               - Thousands of Dollars -

Operating Expenses:
  Deferred Tax Expense
   Federal                                 $  15,262  $   7,836  $   7,803
   State                                       4,045      2,019      1,200
                                           ---------- ---------- ----------
    Total                                     19,307      9,855      9,003
  Investment Tax Credit Amortization             (10)       (60)       (83)
                                           ---------- ---------- ----------
Total Expense Included in
  Operating Expenses                          19,297      9,795      8,920
                                           ---------- ---------- ----------
Other Income (Deductions):
  Deferred Tax Expense
   Federal                                     4,250        777      1,065
   State                                       1,065        266        164
                                           ---------- ---------- ----------
    Total                                      5,315      1,043      1,229
  Reduction in Valuation
   Allowance - Benefit                       (43,443)   (88,638)   (23,282)
  Investment Tax Credit Amortization          (3,273)    (4,355)    (4,683)
  Other                                            -          -     (2,620)
                                           ---------- ---------- ----------
Total Benefit Included in Other
  Income (Deductions)                        (41,401)   (91,950)   (29,356)
                                           ---------- ---------- ----------
Total Benefit for Federal and State
     Income Taxes                          $ (22,104) $ (82,155) $ (20,436)
                                           ========== ========== ==========

     The differences between income tax benefit and the amount obtained by
multiplying income before income taxes by the U.S. statutory federal income
tax rate are as follows:
                                              Years Ended December 31,
                                             1997       1996       1995
                                           ---------- ---------- ----------
                                               - Thousands of Dollars -
Federal Income Tax Expense
 at Statutory Rate                         $  21,514  $  13,544  $  12,064
  State Income Tax Expense, Net of
   Federal Deduction                           3,314      2,081      1,364
  Investment Tax Credit Amortization          (3,283)    (4,415)    (4,766)
  Reduction in Valuation Allowance - Benefit (43,443)   (88,638)   (23,282)
  Net Operating Loss Carryforwards                 -          -     (5,122)
  Capital Loss Carryforwards                       -     (5,616)    (1,045)
  Other                                         (206)       889        351
                                           ---------- ---------- ----------
     Total Benefit for Federal and
      State Income Taxes                   $ (22,104) $ (82,155) $ (20,436)
                                           ========== ========== ==========

     At December 31, 1997, the Company and TEP had, for federal income tax
purposes, approximately $437 million of NOL carryforwards expiring in 2005
through 2009; $26 million of alternative minimum tax (AMT) loss carryforwards
expiring in 2008; $26 million of unused ITC, the use of which will expire
during 2002 through 2005; $11 million of capital loss carryforwards which
expire in 1999; and $6 million of AMT credit which will carry forward to
future years.  For state income tax purposes, the Company and TEP had
approximately $29 million of NOL carryforwards expiring in 1998 and 1999.

     Due to the Financial Restructuring, the Company and TEP experienced a
change in ownership under section 382 of the Internal Revenue Code in
December 1991.  As a result, the amount of taxable income for any post-change
year which may be offset by pre-change NOL will be limited to the section 382
limitation.  The section 382 limitation is based on the value of the Company
and TEP on the ownership change date.  The Company and TEP estimate an annual
section 382 limit of approximately $23 million.  The total section 382
limitation may be increased to the extent of gains recognized on sales of
assets whose fair market value was greater than the tax basis at the
ownership change date, the built-in-gain.  The section 382 limitation may
increase by built-in-gain recognized within a period of five years after the
change in ownership.  During 1992 through 1996, the section 382 limitation
increased by approximately $102 million of built-in-gain recognized due to
asset sales.  Unused section 382 limitation may be carried forward until the
pre-change tax attributes expire.  At December 31, 1997, the Company and TEP
had pre-change federal NOL and ITC carryforwards of approximately $281
million and $26 million, respectively.  Such amounts are included in the
amounts disclosed in the preceding paragraph.

     See Income Tax Assessments in Note 7.

NOTE 4. CONSOLIDATED SUBSIDIARIES
- ---------------------------------

     On January 1, 1998, TEP transferred the stock of its subsidiary, MEH, to
UniSource Energy in exchange for a $95 million promissory note from UniSource
Energy.  See Note 1.  The net losses for 1997, 1996 and 1995 of the
subsidiaries which comprise MEH were $5 million, $2 million and $1 million,
respectively.

  MEH SUBSIDIARIES

     Nations Energy Corporation

     In 1995 the Company established Nations Energy, a wholly-owned
subsidiary of MEH, for the purpose of developing and investing in independent
power projects in global energy markets.  In September 1995, Nations Energy
and Trigen Energy Corporation formed a limited partnership and purchased
Coors Brewing Company's energy production (utility) assets.  Nations Energy
has a 49% interest in such partnership.  The partnership provides electricity
and steam for the brewery operation in Golden, Colorado.  The investment of
approximately $12 million by Nations Energy is included in the Consolidated
Balance Sheets under Investments and Other Property at December 31, 1997 and
1996 and in the Consolidated Statement of Cash Flows for the year ended
December 31, 1995 as Investments in and Loans to Joint Ventures.

     Advanced Energy Technologies, Inc.

     In May 1996, Advanced Energy, a wholly-owned subsidiary of MEH, and ITN
Energy Systems formed Global Solar Energy, L.L.C. for the purpose of
developing and manufacturing photovoltaic materials.  Advanced Energy has a
50% interest in Global Solar.  The $5 million investment in Global Solar is
included in the Consolidated Balance Sheets at December 31, 1997 and 1996
under Investments and Other Property and in the Consolidated Statement of
Cash Flows for the year ended December 31, 1996 as Investments in and Loans
to Joint Ventures.

     Millennium Energy Holdings, Inc.

     Effective September 1, 1997, Millennium, a wholly-owned subsidiary of
MEH, exercised an option to acquire a 50% ownership in New Energy Ventures,
L.L.C. (NEV).  NEV was organized in 1995 for the purpose of acting as a
buyer's agent in procuring electric energy, performing energy services,
engaging in power marketing and trading and other energy related activities.
Concurrently with the exercise of the option, Millennium made a capital
contribution in the amount of $0.8 million and extended a $3.0 million member
loan to NEV.  The investment in NEV is included in the Consolidated Balance
Sheet at December 31, 1997 under Investments and Other Property and in the
Consolidated Statement of Cash Flows for the year ended December 31, 1997 as
Investments in and Loans to Joint Ventures.

     In December 1997, Millennium committed to provide NEV with $20 million
of funding.  At NEV's option, the funding can be in the form of additional
equity, preferred equity, or it can be partially satisfied with $10 million
in loans from Millennium, or a combination thereof.  Based on formulas in the
funding agreement, funding of additional equity would increase Millennium's
financial interest percentage in NEV but not its 50% voting interest.
Pursuant to the funding agreement, at December 31, 1997, Millennium had
extended $1 million in loans to NEV.  Millennium extended an additional $3
million in loans to NEV in February 1998.

  TEP SUBSIDIARIES

     In July 1996, Brookland satisfied approximately $8.5 million of short-
term debt obligations with the assignment of certain finance receivables.
Upon settlement, a provision for loss recorded against such receivables in
prior years was reversed, resulting in income of approximately $8.5 million.

     Upon dissolution of certain subsidiaries which formed a part of TEP's
former investment operations, in June 1997, TEP reversed a provision for
loss, recorded in prior years, resulting in income of approximately $10.2
million.

NOTE 5.  LONG AND SHORT-TERM DEBT AND CAPITAL LEASE OBLIGATIONS
- ---------------------------------------------------------------

  LONG-TERM DEBT

     TEP Sale of Bonds

     In April 1997, the City of Farmington, New Mexico issued $80.4 million
of Pollution Control Revenue Bonds for the benefit of TEP.  The net proceeds
made available to TEP were used in June 1997 to redeem $47.9 million
principal amount of previously issued 6.25% bonds that would have matured in
2003 and $32.5 million principal amount of previously issued 6.10% bonds that
would have matured in 2007.  The new bonds, which are unsecured, bear
interest at 6.95% and mature in 2020.  In addition to extending maturities,
this transaction eliminated sinking fund requirements under the previously
issued bonds and resulted in the retirement of $32.5 million in
collateralizing First Mortgage Bonds.

     In April 1997, the Coconino County, Arizona Pollution Control
Corporation issued $36.7 million of Pollution Control Revenue Bonds for the
benefit of TEP.  The net proceeds loaned to TEP were used, in part, to
redeem, in June 1997, $16.7 million principal amount of previously issued
variable rate bonds that would have matured in 2031 and the remaining portion
is being used to fund $20 million of construction costs of additional
pollution abatement facilities at Navajo Generating Station.  The new bonds,
which are unsecured, bear interest at 7.13% and mature in 2032.  The $16.7
million of previously issued bonds redeemed in this transaction were backed
by a letter of credit expiring in April 1999, which was collateralized by
$18.3 million aggregate principal amount of First Mortgage Bonds.

     In April 1997, the Coconino County, Arizona Pollution Control
Corporation issued $14.7 million of Pollution Control Revenue Bonds for the
benefit of TEP.  The net proceeds loaned to TEP were used in June 1997 to
redeem $14.7 million principal amount of previously issued variable rate
bonds that would have matured in 2031.  The new bonds, which are unsecured,
bear interest at 7.00% and mature in 2032.  The $14.7 million of previously
issued bonds redeemed in this transaction were backed by a letter of credit
expiring in April 1999, which was collateralized by $16.1 million aggregate
principal amount of First Mortgage Bonds.

     In October 1997, the Industrial Development Authority of the County of
Pima, Arizona issued $247.5 million of Industrial Development Revenue Bonds
for the benefit of TEP.  The net proceeds loaned to TEP were used in November
1997 to redeem $245 million principal amount of previously issued variable
rate bonds that would have matured between 2018 and 2025 and to finance
improvements to TEP's lower voltage electric transmission and distribution
system in Pima County, Arizona.  The new bonds, which are unsecured, were
sold in three series:  Series A ($22.5 million) bears interest at 6.10% and
matures in 2025; Series B ($150 million) and Series C ($75 million) bear
interest at 6.00% and mature in 2029.  The previously issued bonds redeemed
in this transaction were backed by letters of credit expiring between 2000
and 2002.  One of these letters of credit was collateralized by $20.7 million
aggregate principal amount of First Mortgage Bonds.

     TEP Bank Credit Agreements

     In February 1997, TEP repaid the outstanding Renewable Term Loan balance
of $31 million under the MRA.  In December 1997, the MRA was replaced with a
new bank Credit Agreement.  Upon termination of the MRA, a release of lien
was obtained for Springerville Unit 2, title to which is held by San Carlos.
Second Mortgage Bonds ($50 million aggregate principal amount) held as
collateral under the MRA were also returned to TEP.

     In December 1997, TEP entered into a new $544 million bank Credit
Agreement to replace the credit facilities provided under the MRA.  The new
Credit Agreement consists of a $100 million Revolving Credit Facility for
general corporate purposes and a $444 million Letter of Credit Facility to
support $428.6 million aggregate principal amount of tax-exempt variable rate
debt obligations.  The facilities mature on December 30, 2002 and are secured
by $544 million aggregate principal amount of Second Mortgage Bonds.  The
Credit Agreement contains certain financial covenants, including interest
coverage, leverage and net worth tests.    As of December 31, 1997, TEP was
in compliance with such covenants.

     Borrowings, if any, under the Revolving Credit Facility bear interest at
a variable rate consisting of a spread over a base rate based upon a pricing
grid tied to the credit rating then in effect on TEP's senior secured debt.
The annual commitment fee payable on the unused portion of the Revolving
Credit Facility, as well as the fee payable on the Letter of Credit Facility,
are also determined based on TEP's credit ratings.  At December 31, 1997, the
commitment fee equaled 0.38% per annum, and the letter of credit fee equaled
1.63% per annum.  TEP had no borrowings outstanding under the Revolving
Credit Facility at December 31, 1997.

     TEP FIRST AND SECOND MORTGAGE

     TEP's utility plant, with the exception of Springerville Unit 2 (title
to which is held by San Carlos), is subject to the lien of the General First
Mortgage and the General Second Mortgage.

     TEP Letters of Credit

     At December 31, 1997, TEP had $528.6 million principal amount of
variable rate tax-exempt IDBs outstanding.  Payment of principal and interest
on these bonds is secured by LOCs.  A LOC supporting $100 million principal
amount of bonds will expire on December 31, 1999.  The remaining LOCs, all of
which were issued under the new Credit Agreement, expire on December 30,
2002.  The weighted average commitment fee on the LOCs is approximately 1.56%
through 1998, increasing to 1.61% in 1999 and 1.75% in 2000.

  TEP CAPITAL LEASE OBLIGATIONS

     The Irvington Lease has an initial term to January 2011 and provides for
renewal periods of two or more years through 2020.  The Springerville Common
Facilities Leases have an initial term to 2017 for one owner participant and
2021 for the other two owner participants, subject to optional renewal
periods of two or more years through 2025.  The Springerville Unit 1 Leases
have an initial term to January 2015 and provide for renewal periods of three
or more years through 2030.  The Springerville Coal Handling Facilities
Leases have an initial term to April 2015 and provide for an initial renewal
period of six years, then additional renewal periods of five or more years
through 2035.

  TEP MATURITIES AND SINKING FUND REQUIREMENTS

     A schedule by years of the aggregate amount of maturities and sinking
fund requirements for TEP's long-term borrowings as of December 31, 1997
follows:

                          Expiring  Scheduled
                            LOCs    Long-Term
                         Supporting   Debt    Capital Lease
                            IDBs   Retirements Obligations     Total
                          --------  --------  ------------  ----------
    Years Ending
    December 31,                   - Thousands of Dollars -
        1998                        $    500  $    97,200   $   97,700
        1999              $100,000    16,725      120,815      237,540
        2000                     -    80,475      164,121      244,596
        2001                     -    26,725      101,781      128,506
        2002               428,600    26,725       89,301      544,626
                          --------  --------  ------------  -----------
        Total 1998 - 2002  528,600   151,150      573,218    1,252,968
        Thereafter               -   535,870    1,541,164    2,077,034
        Imputed Interest         -         -   (1,209,573)  (1,209,573)
                          --------  --------   -----------  -----------
        Total             $528,600  $687,020   $  904,809   $2,120,429
                          ========  ========   ===========  ===========

     TEP expects to refinance the LOCs supporting IDBs at expiration. The
above schedule does not include sinking fund requirements for certain First
Mortgage Bonds of approximately $1.4 million for each of the next five years.
TEP expects to satisfy these sinking fund requirements with pledges of
additional property of approximately $2.3 million each year.

  SHORT-TERM DEBT

     Upon dissolution of certain subsidiaries which formed a part of TEP's
former investment operations, in June 1997, TEP eliminated the $4 million of
short-term debt outstanding at December 31, 1996.

NOTE 6. DIVIDEND AND LOAN RESTRICTIONS
- --------------------------------------

  RESTRICTIVE COVENANTS - DIVIDENDS

     UniSource Energy

     The Company's ability to pay dividends is dependent upon cash flow from
its subsidiaries, TEP and MEH.  TEP comprises substantially all of UniSource
Energy's assets.  TEP is currently precluded by restrictive covenants in
certain debt agreements from declaring or paying dividends.  No dividend on
common stock has been declared or paid by TEP since 1989.  Until such time as
TEP is able to pay dividends to UniSource Energy, it is unlikely that
UniSource Energy would declare and pay dividends to holders of its Common
Stock.

     TEP

     So long as certain series of First Mortgage Bonds (aggregating $184
million in principal amount) are outstanding, the payment of dividends on TEP
common stock is prohibited if certain cash flow coverage and retained
earnings tests are not met.  The cash flow coverage test would prevent TEP
from paying dividends on its common stock until such time as its cash flow
coverage ratio, as defined therein, is greater or equal to a ratio of 2 to 1,
and the retained earnings test would permit dividend payments so long as TEP
has positive retained earnings.  As of December 31, 1997, TEP had a cash flow
coverage ratio in excess of 3 to 1 but did not meet the retained earnings
test as the accumulated deficit was $422 million.  Such covenants will remain
in effect until the First Mortgage Bonds of such series have been paid or
redeemed.  The latest maturity of such First Mortgage Bonds is in 2003.  In
order for TEP to pay a dividend before such maturity date, TEP would need to
have positive retained earnings or redeem all outstanding First Mortgage
Bonds of each series that contain such covenants or amend the supplemental
mortgage indentures pertaining to such series of First Mortgage Bonds.  Such
an amendment would require approval by holders of 75% of all First Mortgage
Bonds.

     TEP's bank Credit Agreement allows for the payment of dividends so long
as TEP maintains compliance with the agreement and meets its financial
covenants, including a covenant which requires TEP to maintain a minimum
level of net worth.  As of December 31, 1997, TEP was in compliance with the
terms of the Credit Agreement.

     Pursuant to the ACC Holding Company Order, until such time as TEP's
equity ratio equals 37.5% of total capital (excluding capital lease
obligations), TEP may not pay dividends to UniSource Energy in excess of 75%
of its earnings.  As of December 31, 1997, TEP's equity ratio was 15% on that
basis.

     In addition to such restrictive covenants, the Federal Power Act states
that dividends shall not be paid out of funds properly included in the
capital account.  It is unclear whether such provisions of the Federal Power
Act restrict TEP from paying dividends.

  RESTRICTIONS ON TEP'S ABILITY TO MAKE LOANS AND ADVANCES

     Under the ACC Affiliated Interest Rules, TEP needs prior ACC approval to
make loans to affiliates for longer than one year or greater than $100,000.
The ACC Holding Company Order contained numerous other continuing
requirements.  One of the requirements is that affiliates must pay for
services received from TEP on the same terms offered to non-affiliates.

NOTE 7. COMMITMENTS AND CONTINGENCIES
- --------------------------------------

  UTILITY CONTRACTUAL MATTERS

     Fuel Purchase Commitments

     TEP has contracts to purchase coal for use at the Springerville and
Irvington Generating Stations and at the joint projects in which TEP
participates.  On June 27, 1997, TEP terminated the existing coal supply
contract for the Springerville Generating Station and entered into a new,
more cost effective contract with the same supplier (see Note 2).  The
previous coal supply contract covered the useful lives of Springerville Units
1 and 2 and contained a bilateral option to renegotiate the contract price
and escalation procedures in 2009 and every five years thereafter.  The new
coal contract has an initial term of 13 years, beginning July 1, 1997, with
an option to extend ten years thereafter.  The new contract also contains
more favorable terms to TEP for certain volume, incremental volume, base
price, incremental price and price adjustment mechanism requirements.

     The Irvington contract terminates on the earlier of 2015 or the
remaining useful life of the coal-fired unit, and includes an adjustment
clause that will affect the future cost of coal delivered.  The Springerville
and Irvington contracts, in the aggregate, require TEP to take 2.1 million
tons of coal per year at an estimated annual cost of $62 million from 1998 to
2009.

     TEP's contracts to purchase coal for use at the joint projects in which
TEP participates expire at various dates from 2005 to 2017 and, in the
aggregate, require TEP to take 1.5 million tons of coal per year at an
estimated annual cost of $45 million from 1998 to 2005.

     TEP's contracts to purchase coal for use at Springerville, Irvington and
each of the joint projects in which TEP participates contain various
provisions calling for the payment of a take-or-pay amount, if certain
minimum quantities of coal are not scheduled and delivered.  TEP's present
fuel requirements are generally in excess of the stated take-or-pay minimum
amounts; however, from time to time, TEP has purchased spot market
alternative fuels or switched fuel burn from one generating station to
another in order to achieve lower overall fuel costs, while incurring take-or-
pay minimum charges.  For Irvington, TEP entered into an agreement with an
alternate coal supplier for 1996 resulting in a $4.4 million take-or-pay
charge but reducing coal costs overall at Irvington.  TEP incurred no take-or-
pay charges in 1997 or 1995.

     Coal and Transportation Contracts - Reversal of Accrued Liabilities

     In 1991 amendments to the contracts with the Springerville coal
supplier, the Irvington coal supplier and the Springerville rail
transportation supplier were entered into which, among other things,
contained provisions which protected the claims of the suppliers under the
original agreements in the event TEP did not perform its obligations under
the terms of the amended agreements during the subsequent four year period.
In 1995, TEP satisfied all of the conditions of the amended contracts and,
consequently, reversed $12.2 million of accrued liabilities.  The reversal of
the accrued liabilities reduced Fuel and Purchased Power expense by $12.2
million in 1995.

  COMMITMENTS - ENVIRONMENTAL REGULATION

     In the fall of 1990, Congress adopted certain Federal Clean Air Act
Amendments (CAAA) with respect to facility permitting and to reductions in
sulfur dioxide and nitrogen oxide emissions which will affect TEP's
operations.  The required reductions of sulfur dioxide emissions will be
implemented in two phases which are effective in 1995 and 2000, respectively.
TEP is not affected by the requirements for sulfur dioxide and nitrogen oxide
emissions which went into effect in 1995 (Phase I), but is subject to the
requirements that go into effect January 1, 2000 (Phase II).  All of TEP's
generating facilities (except internal combustion turbines) are subject to
the Phase II sulfur dioxide and nitrogen oxide requirements.  The estimated
cost of compliance with these requirements is approximately $2 million,
scheduled to be incurred between 1998 and 2000.

     In 1993 affected TEP generating units were allocated sulfur dioxide
Emission Allowances based on past operational history.  Beginning in the year
2000, Phase II generating station units must hold Emission Allowances (by
January 30 of the year following the compliance year) equal to the level of
emissions in the compliance year, or face penalties and a requirement to
offset excess emissions in future years.  An analysis of the Emission
Allowances that were allocated to TEP shows that TEP may not have sufficient
allowances to permit normal plant operation and be in compliance with the
sulfur dioxide regulations once the Phase II requirements become effective
due to the increase in the rated capacity at Springerville.  To the extent
that TEP does not have sufficient allowances, due to increased energy output
at Springerville or other factors, TEP would have to purchase additional
Emission Allowances.  Based upon current estimates of additional required
Emission Allowances and the current market price of such allowances, TEP
believes that it will be able to acquire additional required allowances and
that such purchases will not have a material effect on TEP.

      Title  V of the CAAA requires that more complex air quality permits  be
applied   for   and   obtained  for  all  of  TEP's  generating   facilities.
Applications  have  been  filed for all such  facilities  and  TEP  does  not
anticipate any material problems in obtaining the required permits.   TEP  is
required  to pay an annual emission-based fee with respect to each generating
facility subject to a Title V permit. The annual emission-based fee  paid  in
1995, 1996 and 1997 was less than $1 million.

     The CAAA also require multi-year studies of visibility impairment in
specified areas and studies of hazardous air pollutants which relate to the
necessity of future regulations of electric utility generating units.  Since
these activities involve the gathering of information not currently
available, TEP cannot predict the outcome of these studies.

     As a result of recent and possible future changes in federal and state
environmental laws, regulations and permit requirements, because of and in
addition to the CAAA, TEP may incur additional costs for the purchase or
upgrading of pollution control emission monitoring equipment on existing
electric generating facilities and may experience a reduction in operating
efficiency.  There may be a need for variances from certain environmental
standards and operating permit conditions until required equipment and
processes for control, handling and disposal of emissions are operational and
reliable.  Failure to comply with any EPA or state compliance requirements
may result in substantial penalties or fines which are provided for by law
and which in some cases are mandatory.

     In 1991, the EPA adopted a rule for the reduction of Navajo's sulfur
dioxide emissions on an annual averaging basis by 90% to address visibility
impairment at Grand Canyon National Park.  TEP estimates that its share of
the required capital expenditures remaining as of December 31, 1997 relating
to the rule's implementation will be approximately $8 million, including
AFDC, through 2000.

     In order to improve the efficiency of sulfur dioxide removal at the
station, the existing removal process is being replaced with a new process at
an estimated cost to TEP of $20 million, including AFDC, during the period
1997 through 1999.  TEP estimates that its share of the required capital
expenditures remaining as of December 31, 1997 relating to this process
improvement will be approximately $11 million, including AFDC, through 1999.

  CONTINGENCIES

     Ruling on Arizona Sales Tax Assessments - Coal Sales

     The Arizona Department of Revenue (ADOR) issued transaction privilege
(sales) tax assessments to TEP alleging that Valencia (formerly a wholly-
owned subsidiary of TEP) was liable for sales tax on gross income received
from coal sales, transportation and coal-handling services to TEP for the
period November 1985 through May 1996.  TEP protested these assessments.  On
September 12, 1996, the Arizona Court of Appeals upheld the validity of the
assessment issued for the period November 1985 through March 1990.  As a
result of the Court of Appeals decision, TEP recorded an additional expense
of approximately $9.2 million in the third quarter of 1996.  TEP appealed to
the Arizona Supreme Court, which heard arguments in December 1997 and is
expected to render its opinion in the second quarter of 1998.  Additionally,
TEP is protesting the assessments for the period April 1990 through May 1996.

     Previously, TEP had recorded an expense through the Consolidated
Statements of Income and related liability for the amount of sales taxes and
interest thereon which TEP believed was probable of incurrence for the period
November 1985 through May 1996.  Generally, Arizona law requires payment of
an assessment prior to pursuing the appellate process.  TEP has previously
paid, under protest, a total of $23 million of the disputed sales tax
assessments, subject to refund in the event TEP prevails.

     Since Valencia was merged into TEP on May 31, 1996, TEP acquires coal
directly from the supplier.  As a result, TEP believes it is not liable for
transaction privilege tax computed on a basis similar to the assessments
described above subsequent to May 31, 1996.  For periods subsequent to May
31, 1996 TEP continues to record an estimated interest expense on the above
assessments.

     Arizona Sales Tax Assessments - Leases

     The ADOR has issued transaction privilege (sales) tax assessments to the
lessors from whom TEP leases certain property.  The assessments allege sales
tax liability on a component of rents paid by TEP under the Springerville
Unit 1 Leases, the Springerville Common Facilities Leases, the Irvington
Lease and the Springerville Coal Handling Facilities Leases.  Assessments
cover the period August 1, 1988 to September 30, 1993.  Pursuant to
indemnification provisions, if the ADOR prevails TEP must reimburse the
lessors for taxes paid by them.

     In the opinion of management, TEP has recorded, through the Consolidated
Statements of Income in current and prior years, a liability for the amount
of sales taxes and interest thereon for which TEP feels incurrence is
probable as of December 31, 1997.  In the event that the assessments by the
ADOR are sustained, an additional liability would result.  Although it is
reasonably possible that the ultimate resolution of such matter could result
in an additional sales tax expense of up to approximately $21 million in
excess of amounts recorded, management and outside tax counsel believe that
TEP has meritorious defenses to mitigate or eliminate the assessed amounts.

     Based on the current status of the legal proceedings, TEP believes that
the ultimate resolution of such dispute will occur over a period of two to
four years.  Based on consultations with counsel and considering the amounts
already accrued, TEP believes that the resolution of this tax matter should
not have a material adverse effect on the Consolidated Financial Statements.

     Income Tax Assessments

     In February 1998, the Internal Revenue Service (IRS) issued an income
tax assessment to TEP asserting deficiencies in the amount of federal income
taxes for TEP's 1992 and 1993 tax years.  The IRS is challenging TEP's
treatment of various items relating to the 1992 Financial Restructuring,
including TEP's computation of the section 382 limitation as described in
Note 3 and amounts of NOL available to offset taxable income in future
periods.  TEP strongly disagrees with the IRS position and will vigorously
contest it.  Although management cannot predict the outcome of the dispute
with certainty, management does not expect the resolution of the matter to
have a material adverse impact on the financial statements.

NOTE 8. JOINTLY-OWNED FACILITIES
- --------------------------------

     At December 31, 1997, TEP's interests in jointly-owned generating and
transmission facilities were as follows:

                              Percent      Plant  Construction
                              Owned By      in      Work in    Accumulated
                              Company     Service   Progress   Depreciation
                             ----------- -------- ------------ ------------
                                             - Thousands of Dollars -

 San Juan Units 1 and 2         50.0     $285,142    $11,221     $222,087
 Navajo Station Units 1,2 and 3  7.5      102,988     13,856       45,151
 Four Corners Units 4 and 5      7.0       78,242        522       57,412
 Transmission Facilities     7.5 to 95.0  218,284        887      115,212
                                         --------    -------     --------
     Total                               $684,656    $26,486     $439,862
                                         ========    =======     ========

     TEP has financed or provided funds for the above facilities and its
share of operating expenses is included in the Consolidated Statements of
Income.

NOTE 9. EMPLOYEE BENEFITS PLANS
- -------------------------------

  VOLUNTARY SEVERANCE PLAN (VSP)

     In May 1996, TEP implemented a VSP.  The VSP resulted in an expense in
the second quarter of 1996 for termination benefits of approximately $14
million included in Voluntary Severance Plan Expense - Net on the
Consolidated Statement of Income.  Approximately $10 million of the
termination benefits were paid in 1996 with the remaining benefits to be paid
over the subsequent three years.  As a result of partial settlements and
curtailments of employee benefit plans due to the VSP, TEP recognized a gain
of approximately $3.4 million in the third quarter of 1996 and a loss of
approximately $3 million in the first quarter of 1997.

  PENSION PLANS

     TEP has noncontributory pension plans for all regular employees.
Benefits are based on years of service and the employee's average
compensation.  TEP makes annual contributions to the plans that are not
greater than the maximum tax-deductible contribution and not less than the
minimum funding requirement by the Employee Retirement Income Security Act of
1974.  Contributions are intended to provide for both current and future
accrued benefits.

     The following table sets forth the plans' funded status and amount
recognized in the Consolidated Financial Statements at December 31, 1997 and
1996.  The actuarial present value of the benefit obligation and
reconciliation of funding status at October 1, were as follows:

                                                           1997     1996
                                                         -------- --------
                                                     - Thousands of Dollars -
Accumulated Benefit Obligation
  Vested                                                 $61,082  $60,711
  Non-Vested                                               8,324    7,341
                                                         -------- --------
    Total                                                $69,406  $68,052
                                                         ======== ========


Plan Assets at Fair Value, Principally Equity and
  Fixed Income Securities                                $88,316  $86,387
Projected Benefit Obligation                             (80,380) (76,563)
                                                         -------- --------
Plan Assets in Excess of Projected Benefit Obligation      7,936    9,824
Unrecognized Net Gain from Past Experience                (7,097)  (8,088)
Prior Service Cost Not Yet Recognized in Net Periodic
  Pension Cost                                            10,559    7,705
Unrecognized Net Assets at Transition Being Amortized
  Over 15 Years                                             (757)  (1,405)
                                                         -------- --------
Prepaid Pension Cost Included in the Balance Sheet       $10,641  $ 8,036
                                                         ======== ========

     The increases in the Accumulated Benefit Obligation and Projected
Benefit Obligation from 1996 to 1997 reflect the decrease in the discount
rate used from 8% in 1996 to 7.25% in 1997.

                                                 Years Ended December 31,
                                                  1997     1996     1995
                                                -------- -------- --------
                                                 - Thousands of Dollars -
Components of Net Pension Cost
  Service Cost of Benefits Earned During Period $ 3,462  $ 2,746  $ 3,236
  Interest Cost on Projected Benefit Obligation   5,777    6,022    6,752
  Actual (Gain) Loss on Plan Assets              (7,955)  (7,757)  (8,417)
  Net Amortization and Deferral                     817      404      532
                                                -------- -------- --------
     Net Periodic Pension Cost                  $ 2,101  $ 1,415  $ 2,103
                                                ======== ======== ========

Actuarial Assumptions:                             1997    1996    1995
                                                   ----    ----    ----
  Discount Rate - Funding Status                   7.25%   8.0%    7.5%
  Average Compensation Increase                    4.0     5.0     5.0
  Expected Long-Term Rate of Return on Plan Assets 9.0     9.0     9.0

  POSTRETIREMENT BENEFITS OTHER THAN PENSIONS

     TEP provides health care and life insurance benefits for retired
employees.  All regular employees may become eligible for those benefits if
they reach retirement age while working for TEP.  Those and similar benefits
are provided through an independent administrator handling health claims and
insurance companies that offer premiums based on group rates.

     TEP is authorized by the ACC to recover through rates the costs of
benefits only as payments are made to retired employees; the postretirement
benefits are currently funded entirely on a pay-as-you-go basis.  Under the
provisions of FAS 106 TEP cannot record a regulatory asset for the excess of
FAS 106 expense over actual benefit payments.

                                                           December 31,
                                                          1997       1996
                                                        ---------  ---------
                                                     - Thousands of Dollars -
Accumulated Postretirement Benefit Obligation
  Retirees                                              $(15,396)  $(15,471)
  Fully Eligible Active Plan Participants                 (2,503)    (1,817)
  Other Active Participants                              (12,378)   (14,100)
                                                        ---------  ---------
   Total Accumulated Postretirement Benefit Obligation   (30,277)   (31,388)
Unrecognized Net Loss from Past Experience                   286      3,172
Unrecognized Obligation at Transition
  Being Amortized Over 20 Years                           13,025     13,893
                                                        ---------  ---------
Accrued Postretirement Benefit Cost Included in the
  Balance Sheet                                         $(16,966)  $(14,323)
                                                        =========  =========

                                                   Years Ended December 31,
                                                    1997     1996     1995
                                                   -------  -------  -------
                                                   - Thousands of Dollars -
Components of Net Postretirement Benefit Cost
  Service Cost of Benefits Earned During Period    $  975   $1,025   $  838
  Interest Cost on Postretirement Benefit
    Obligation                                      2,068    2,071    1,541
  Amortization of the Unrecognized Transition
    Obligation                                        868      913      958
  Amortization of the Unrecognized Loss (Gain)          -       42     (152)
                                                   -------  -------  -------
     Net Periodic Postretirement Benefit Cost      $3,911   $4,051   $3,185
                                                   =======  =======  =======

     The accumulated postretirement benefit obligation was determined using a
7.00% and 7.25% discount rate for 1997 and 1996, respectively.  The health
care cost trend rates were assumed to be 8.0% and 8.5% for 1997 and 1996,
respectively, gradually declining to 4.0% in 2003 and thereafter.  The effect
of a one percentage point increase in the assumed health care cost trend rate
would increase the accumulated postretirement benefit obligation as of
December 31, 1997 by approximately $3.7 million and the net periodic cost by
$0.5 million for 1997.

  STOCK OPTION PLANS

     On May 20, 1994, the Shareholders of the Company approved two stock
option plans, the 1994 Outside Director Stock Option Plan (1994 Directors'
Plan) and the 1994 Omnibus Stock and Incentive Plan (1994 Omnibus Plan).

     The 1994 Directors' Plan provides for the annual grant of 1,200 non-
qualified stock options to each eligible director, at an exercise price equal
to the market price of the Company's Common Stock at the grant date,
beginning January 3, 1995.  These options vest ratably and become exercisable
in one-third increments on each anniversary date of the grant and expire on
the tenth anniversary.

     The 1994 Omnibus Plan allows the Compensation Committee, a committee
comprised solely of non-employee directors, to grant any or all of the
following types of awards to each eligible employee of the Company:  stock
options, including incentive stock options, non-qualified stock options and
discounted stock options; stock appreciation rights; restricted stock;
performance units; performance shares; and dividend equivalents.  The total
number of shares of the Company's stock which may be awarded under the
Omnibus Plan cannot exceed 1.6 million.

     In June 1997, the Compensation Committee awarded 69,363 shares of
restricted stock which had a fair value at the date of grant of $1 million to
officers.  The restrictions lapse over a three-year period in one-third
increments on each anniversary date of the grant.  The restricted stock was
awarded but not issued.  Each officer is entitled to receive shares of stock
after the restrictions have lapsed, but may elect to defer receipt of such
stock to a future period.  Compensation expense is charged to earnings over
the restriction period and amounted to $0.2 million in 1997.

     The Compensation Committee granted stock options intended to qualify as
incentive stock options under the Internal Revenue Code to key employees
during 1997, 1996 and 1995 and to all employees during 1994 at exercise
prices greater than or equal to the market price of the Company's Common
Stock at the grant date.  These options vest ratably and become exercisable
in one-third increments on each anniversary date of the grant and expire on
the tenth anniversary.

     A summary of the activity of the 1994 Directors' Plan and 1994 Omnibus
Plan is as follows:

                           1997              1996              1995
                     ----------------  ----------------  ----------------
                             Weighted          Weighted          Weighted
                             Average           Average           Average
                             Exercise          Exercise          Exercise
                     Shares   Price    Shares   Price    Shares   Price
                     ------- --------  ------- --------  ------- --------
Options Outstanding,
 Beginning of Year   688,123  $15.30   525,522  $16.26   442,952  $16.28
  Granted            144,190  $14.59   212,684  $13.16    93,718  $16.19
  Exercised           (6,630) $16.25    (2,886) $16.25         -       -
  Forfeited          (25,142) $15.18   (47,197) $16.25   (11,148) $16.18
                     -------           -------           -------
Options Outstanding,
 End of Year         800,541  $15.17   688,123  $15.30   525,522  $16.26
                     =======           =======           =======
Options Exercisable,
 End of Year         491,763  $15.84   286,944  $16.27   143,744  $16.28

Option Price Range of Options Outstanding at December 31, 1997:  $13.00 to
   $17.81

Weighted Average Remaining Contractual Life at December 31, 1997:  7.6 Years

     The Company applies Accounting Principles Board Opinion No. 25,
Accounting for Stock Issued to Employees, and related interpretations in
accounting for its stock option plans.  No compensation cost has been
recognized for the plans during 1995 though 1997.  The Company has adopted
the disclosure-only provisions of Statement of Financial Accounting Standards
No. 123, Accounting for Stock-Based Compensation (FAS 123).  Had compensation
costs for the Company's stock option plans been determined based on the fair
value at the grant date for awards in 1997, 1996 and 1995 consistent with the
provisions of FAS 123, net income and net income per average share would have
been reduced to the pro forma amounts indicated below:


                                                Years Ended December 31,
                                               1997       1996       1995
                                             --------    -------    -------
                                                 - Thousands of Dollars -
                                                  (except per share data)
Net Income - As Reported                      $83,572   $120,852   $54,905
             Pro Forma                        $83,201   $120,594   $54,833

Basic Earnings Per Share - As Reported          $2.60      $3.76     $1.71
                           Pro Forma            $2.59      $3.75     $1.71

Diluted Earnings per Share - As Reported        $2.59      $3.75     $1.70
                             Pro Forma          $2.58      $3.74     $1.70

     The fair value of each stock option grant is estimated on the date of
grant using the Black-Scholes option pricing model with the following
weighted average assumptions:

                                               1997        1996      1995
                                             --------    --------   -------
              Expected life (years)               3           4          4
              Interest rate                    6.16%       6.51%      6.30%
              Volatility                      23.15%      23.51%     23.51%
              Dividend yield                   None        None       None

NOTE 10. EARNINGS PER SHARE (EPS)
- ---------------------------------

     The Company adopted FAS 128 in the fourth quarter of 1997.  This
statement requires a dual presentation of basic and diluted EPS on the face
of the income statement.  The adoption of FAS 128 required the restatement of
prior period EPS.  A reconciliation of the numerators and denominators of the
basic and diluted per share computations is set forth in the following table:

                                                Years Ended December 31,
                                               1997       1996       1995
                                             --------    -------    -------
                                                 - Thousands of Dollars -
                                                  (except per share data)

   Basic Earnings Per Share:
   Numerator: Net Income                      $83,572   $120,852   $54,905
   Denominator: Average Shares
     of Common Stock - Outstanding             32,138     32,136    32,138
                                             -------   --------   -------
   Basic Earnings Per Share                  $  2.60   $   3.76   $  1.71
                                             =======   ========   =======

   Diluted Earnings per Share:
   Numerator: Net Income                     $83,572   $120,852   $54,905
   Denominator: Average Shares
     of Common Stock - Outstanding            32,138     32,136    32,138
   Effect of Dilutive Securities:
     Warrants                                     53         81        70
     Options                                      87         36        12
                                             -------   --------   -------
   Total Shares                               32,278     32,253    32,220
                                             -------   --------   -------
  Diluted Earnings Per Share                $  2.59   $   3.75   $  1.70
                                             =======   ========   =======

     The Warrants are exercisable into TEP common stock.  However, the
dilutive effect is the same as it would be if the Warrants were exercisable
into UniSource Energy Common Stock.

NOTE 11. QUARTERLY FINANCIAL DATA (unaudited)
- ---------------------------------------------
                                       First    Second     Third    Fourth
                                     --------- --------- --------- ---------
                                             - Thousands of Dollars -
                                              (except per share data)
1997
Operating Revenue                    $154,281  $182,970  $231,089  $161,553
Operating Income                       20,790    33,830    56,110    23,293
NOL Benefit Recognition (see Note 3)   14,318    14,975    13,120     1,030
Net Income                             11,492    29,901    43,415    (1,236)
Basic Earnings Per Share                 0.36      0.93      1.35     (0.04)
Diluted Earnings Per Share               0.36      0.93      1.34     (0.04)

1996
Operating Revenue                    $148,028  $184,533  $223,078  $160,234
Operating Income                       17,118    27,110    52,616    20,722
NOL Benefit Recognition (see Note 3)    4,849     6,164    70,283     7,342
Net Income                                419    10,289   102,498     7,646
Basic Earnings Per Share                 0.01      0.32      3.19      0.24
Diluted Earnings Per Share               0.01      0.32      3.19      0.23

     DUE TO SEASONAL FLUCTUATIONS IN SALES, THE RECOGNITION OF NOL
CARRYFORWARD BENEFITS AND ONE-TIME ADJUSTMENTS, THE QUARTERLY RESULTS ARE NOT
INDICATIVE OF ANNUAL OPERATING RESULTS.  SEE NOTE 4 REGARDING THE REVERSAL OF
A $8.5 MILLION AND $10.2 MILLION PROVISION FOR LOSS IN THE THIRD QUARTER OF
1996 AND SECOND QUARTER OF 1997, RESPECTIVELY, NOTE 7 REGARDING THE
RECOGNITION OF $9.2 MILLION IN SALES TAX EXPENSE IN THE THIRD QUARTER OF
1996, AND NOTE 9 REGARDING THE VSP RELATED AMOUNTS RECORDED IN 1996 AND 1997.
ADDITIONALLY, IN THE FOURTH QUARTER OF 1997, TEP RECEIVED AN INTEREST REFUND
OF $2.8 MILLION RELATING TO INCOME TAXES; SUCH INTEREST REFUND IS INCLUDED IN
OTHER INCOME (DEDUCTIONS) ON THE CONSOLIDATED STATEMENT OF INCOME FOR THE
YEAR ENDED DECEMBER 31, 1997.

NOTE 12. SUPPLEMENTAL CASH FLOW INFORMATION
- -------------------------------------------

     FOR PURPOSES OF THIS STATEMENT, THE COMPANY AND TEP DEFINE CASH AND CASH
EQUIVALENTS AS CASH (UNRESTRICTED DEMAND DEPOSITS) AND ALL HIGHLY LIQUID
INVESTMENTS PURCHASED WITH A MATURITY OF THREE MONTHS OR LESS.  A
RECONCILIATION OF NET INCOME TO NET CASH FLOWS FROM OPERATING ACTIVITIES
FOLLOWS:

                                                Years Ended December 31,
                                              1997        1996        1995
                                           ----------  ----------  ----------
                                                - Thousands of Dollars -

Net Income                                  $ 83,572    $120,852    $ 54,905
Adjustments to Reconcile Net Income
 to Net Cash Flows
  Depreciation and Amortization Expense       86,405      98,246      93,136
  Deferred Income Taxes and Investment
   Tax Credits - Net                         (23,089)    (83,722)    (21,136)
  Deferred Fuel and Purchased Power                -           -       5,872
  Lease Payments Deferred                     33,679      30,756      32,299
  Deferred Springerville Unit 2 Costs              -        (286)     (1,127)
  Regulatory Amortizations, Net of Interest
   Imputed on Losses Recorded at
   Present Value                              (3,485)    (16,544)    (15,852)
  Reversal of Loss Provision                 (10,154)     (8,472)          -
  Deferred Contract Termination Fee          (38,077)          -           -
  Emission Allowances                        (11,463)      2,353       7,224
  Other                                        5,188      (4,036)     (1,691)
  Changes in Assets and Liabilities which
   Provided (Used) Cash Exclusive of
   Changes Shown Separately
    Accounts Receivable                       (5,320)     (4,188)      4,615
    Materials and Fuel                        (3,649)     11,812      (6,059)
    Accounts Payable                           6,103       1,644     (16,022)
    Taxes Accrued                                390       8,311     (13,519)
    Other Current Assets and Liabilities       2,298      (9,926)     (5,328)
    Other Deferred Assets and Liabilities      1,992       4,467       2,073
                                           ----------  ----------  ----------
Net Cash Flows - Operating Activities       $124,390    $151,267    $119,390
                                           ==========  ==========  ==========

    Non-cash investing and financing activities of the Company and TEP that
affected recognized assets and liabilities but did not result in cash
receipts or payments were:
                                                Years Ended December 31,
                                              1997        1996        1995
                                           ----------  ----------  ----------
                                                - Thousands of Dollars -
Capital Lease Obligations                   $ 11,788    $  8,336    $  8,095
                                           ----------  ----------  ----------



ITEM 9. -- CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE
- -------------------------------------------------------------------------------

      On November 7, 1997, based upon the recommendation of its audit
committee, the Board of Directors of TEP voted to appoint Price Waterhouse
LLP as TEP's independent accountants for the year ending December 31, 1998.
TEP chose not to renew the engagement of Deloitte & Touche LLP, TEP's present
independent accountants.  Deloitte & Touche LLP continued to serve for the
1997 fiscal year, including rendering an opinion on the financial statements
for the year ended December 31, 1997, included herein.

      The reports of Deloitte & Touche LLP on the Company's and TEP's
financial statements for each of the two most recent years ended December 31,
1997 did not contain any adverse opinion or disclaimer of opinion, nor were
the reports qualified in any manner.

      During 1996, 1997 and the period from December 31, 1997 to the date of
this Form 10-K, there were no disagreements with Deloitte & Touche LLP on any
matter of accounting principle or practice, financial statement disclosure or
auditing scope or procedure.  During this period, there were no "reportable
events" as that term is defined in Item 304 (a) (1) (v) of Regulation S-K.

          The Company and TEP have requested Deloitte & Touche LLP to furnish
a letter addressed to the Securities and Exchange Commission stating whether
it agrees with the above statements for the two most recent years ended
December 31, 1997 to the date of this Form 10-K.

      On November 14, 1997, TEP (and the Company) engaged Price Waterhouse
LLP as its principal accountants to audit the financial statements for the
year ending December 31, 1998.  During 1996, 1997 and the period from
December 31, 1997 to the date of this Form 10-K, the Company and TEP have not
consulted Price Waterhouse LLP on items which concerned the application of
accounting principles generally, or to a specific transaction or group of
transactions, either completed or proposed, or the type of audit opinion that
might be rendered on the financial statements except as related to
transactions for the year ending December 31, 1998.


                                  PART III

ITEM 10. -- DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANTS
- -------------------------------------------------------------------------------

  DIRECTORS
  ---------

      The individuals serving as Directors of UniSource Energy also serve as
the Directors of TEP.  Information concerning Directors is contained under
Election of Directors in the Company's Proxy Statement relating to the 1998
Annual Meeting of Shareholders, which information is incorporated herein by
reference.

  EXECUTIVE OFFICERS
  ------------------

      Executive Officers of UniSource Energy who are elected annually by the
Company's Board of Directors, are as follows:

<TABLE>
<CAPTION>                                                                      
                                                                       Execitive
Name                   Age   Title                                      Officer
- ----                   ---   -----                                       Since
                                                                       ---------
<S>                    <C>   <C>                                       <C>
Charles E. Bayless      55   Chairman of the Board, President and
                             Chief Executive Officer (a)                  1989
Ira R. Adler            47   Senior Vice President, Chief Financial       1988
                             Officer and Treasurer (b)
George W. Miraben       56   Senior Vice President - Policy and Human     1990
                             Resources (c)
James S. Pignatelli     54   Senior Vice President and Chief Operating    1994
                             Officer (d)
Karen G. Kissinger      43   Vice President, Controller and Principal     1991
                             Accounting
                             Officer (i)
Dennis R. Nelson        47   Vice President, General Counsel and          1991
                             Corporate
                             Secretary (k)
</TABLE>

      Executive Officers of TEP who are elected annually by TEP's Board of
Directors, are as follows:

<TABLE>
<CAPTION>
                                                                      Executive
Name                   Age   Title                                     Officer
- ----                   ---   -----                                      Since
                                                                       --------
<S>                    <C>   <C>                                        <C>
Charles E. Bayless      55   Chairman of the Board, President and
                             Chief Executive Officer (a)                   1989
Ira R. Adler            47   Senior Vice President and Chief Financial     1988
                             Officer (b)
George W. Miraben       56   Senior Vice President - Policy and Human      1990
                             Resources (c)
James S. Pignatelli     54   Senior Vice President and Chief Operating     1994
                             Officer (d)
Thomas A. Delawder      51   Vice President - Energy Resources (e)         1985
Gary L. Ellerd          47   Vice President - Operations (f)               1985
Steven J. Glaser        40   Vice President - Energy Services (g)          1994
Thomas N. Hansen        47   Vice President - Technical Services Advisor   1992
                             (h)
Karen G. Kissinger      43   Vice President and Controller (i)             1991
Kevin P. Larson         41   Vice President and Treasurer (j)              1994
Dennis R. Nelson        47   Vice President, General Counsel and
                             Corporate Secretary (k)                       1991
<FN>
(a)  Charles E. Bayless:  Mr. Bayless joined TEP as Senior Vice President and
Chief Financial Officer in December 1989.  He was elected President and Chief
Executive Officer in July 1990 and was elected to the Board of Directors in
June 1990.  On January 28, 1992, Mr. Bayless was named Chairman of the Board
of Directors.  He was named Chairman of the Board, President and Chief
Executive Officer of UniSource Energy in January 1998.  Prior to joining TEP,
he was Senior Vice President and Chief Financial Officer of Public Service
Company of New Hampshire from 1981 through 1989.

(b)  Ira R. Adler:  Mr. Adler joined TEP in 1986 as Manager of Financial
Planning.  In 1987 he was elected as Vice President and Treasurer of TRI, one
of TEP's investment subsidiaries, from which position he resigned in October
1988, when he was elected Treasurer of TEP.  He was elected Vice President -
Finance and Treasurer in July 1989 and was elected Senior Vice President and
Chief Financial Officer in July 1990 and President of TRI and SRI in April
1992.  He was named Senior Vice President, Chief Financial Officer and
Treasurer of UniSource Energy in January 1998.  Prior to joining TEP, he was
Vice President - Finance of US WEST Financial Services, Inc.

(c)   George W. Miraben:  Mr. Miraben was elected Vice President, Public
Affairs, effective March 1990, was named Vice President - Human Resources and
Public Affairs in 1994, and became Senior Vice President - Policy and Human
Resources in 1996.  He was named Senior Vice President of UniSource Energy in
January 1998.  Prior to joining TEP, he was Director of External Affairs for
US WEST Communications' Arizona operation from 1981 through March 1990.

(d)  James S. Pignatelli:  Mr. Pignatelli joined TEP as Senior Vice President
in August 1994 and was elected Senior Vice President and Chief Operating
Officer in 1996.  He was named Senior Vice President and Chief Operating
Officer of UniSource Energy in January 1998.  Prior to joining TEP, he was
President and Chief Executive Officer from 1988 to 1993 of Mission Energy
Company, a subsidiary of SCE Corp.

(e)   Thomas A. Delawder:  Mr. Delawder joined TEP in 1974 and thereafter
served in various engineering and operations positions.  In April 1985 he was
named Manager, Systems Operations and was elected Vice President - Power
Supply and System Control in November 1985.  In February 1991, he became Vice
President - Engineering and Power Supply and in January 1992 he became Vice
President - System Operations.  In 1994, he became Vice President - Energy
Resources.

(f)   Gary L. Ellerd:  Mr. Ellerd joined TEP as Vice President and Controller
in January 1985.  He was elected Vice President - Services and Chief 
Information Officer in January 1991 and in January 1992 he became Vice 
President - Corporate Information Services and Chief Information Officer.
In 1994, he was named Vice President - Retail Customers.  In 1995, he was
named Vice President - Operations.

(g)   Steven J. Glaser:  Mr. Glaser joined TEP in 1990 as a Senior Attorney
in charge of Regulatory Affairs.  He was Manager of TEP's Legal department
from 1992 to 1994, and Manager of Contracts and Wholesale Marketing from 1994
until elected Vice President - Business Development.  In 1995, he was named
Vice President - Wholesale/Retail Pricing and System Planning.  He was named
Vice President - Energy Services in 1996.

(h)   Thomas N. Hansen:  Mr. Hansen joined TEP in December 1992 as Vice
President - Power Production.  Prior to joining TEP, Mr. Hansen was Century's
Vice President - Operations from 1989 and Plant Manager at Springerville from
1987 through 1988.  In 1994, he was named Vice President - Technical Advisor.

(i)   Karen G. Kissinger:  Ms. Kissinger joined TEP as Vice President and
Controller in January 1991.  She was named Vice President, Controller and
Principal Accounting Officer of UniSource Energy in January 1998.  Prior to
joining TEP, she was a Manager with Deloitte & Touche from 1986 through 1989
and a Senior Manager through 1990.

(j)   Kevin P. Larson:  Mr. Larson joined TEP in 1985 and thereafter held
various positions in its finance department and at TEP's investment
subsidiaries.  In January 1991, he was elected Assistant Treasurer of TEP and
named Manager of Financial Programs.  He was elected Treasurer of TEP in
August 1994 and Vice President in March 1997.

(k)   Dennis R. Nelson:  Mr. Nelson joined TEP as a staff attorney in 1976. 
He was manager of the Legal Department from 1985 to 1990.  He was elected Vice
President, General Counsel and Corporate Secretary in January 1991.  He was
named Vice President, General Counsel and Corporate Secretary of UniSource
Energy in January 1998.
</TABLE>


ITEM 11. -- EXECUTIVE COMPENSATION
- -------------------------------------------------------------------------------

      Information concerning Executive Compensation is contained under
Executive Compensation and Other Information in the Company's Proxy Statement
relating to the 1998 Annual Meeting of Shareholders, which information is
incorporated herein by reference.


ITEM 12. -- SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
- -------------------------------------------------------------------------------

  GENERAL
  -------

      At February 24, 1998, UniSource Energy had outstanding 32,138,124
shares of Common Stock.  As of February 24, 1998, the number of shares of
Common Stock beneficially owned by all directors and officers of the Company
as a group amounted to less than 1% of the outstanding Common Stock.

      At February 24, 1998, UniSource Energy owned all of the outstanding
shares of common stock of TEP.

  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS
  -----------------------------------------------

      Information concerning the security ownership of certain beneficial
owners of UniSource Energy is contained under Security Ownership of Certain
Beneficial Owners in the Company's Proxy Statement relating to the 1998
Annual Meeting of Shareholders, which information is incorporated herein by
reference.

  SECURITY OWNERSHIP OF MANAGEMENT
  --------------------------------

      Information concerning the security ownership of the Directors and
Executive Officers of UniSource Energy and TEP is contained under Security
Ownership of Management in the Company's Proxy Statement relating to the 1998

Annual Meeting of Shareholders, which information is incorporated herein by
reference.

ITEM 13. -- CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
- -------------------------------------------------------------------------------

      None.


                                   PART IV

ITEM 14. -- EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K
- -------------------------------------------------------------------------------

                                                                Page
                                                                ----
(a)   1.    Consolidated Financial Statements as of
            December 31, 1997 and 1996 and for Each
               of the Three Years in the Period Ended
               December 31, 1997.

            UniSource Energy Corporation
            ----------------------------
            Independent Auditors' Report                         37
            Consolidated Statements of Income                    38
            Consolidated Statements of Cash Flows                39
            Consolidated Balance Sheets                          40
            Consolidated Statements of Capitalization            41
            Consolidated Statements of Changes in Stockholders'
              Equity (Deficit)                                   42
            Notes to Consolidated Financial Statements           48
 
            Tucson Electric Power Company
            -----------------------------
            Independent Auditors' Report                         37
            Consolidated Statements of Income                    43
            Consolidated Statements of Cash Flows                44
            Consolidated Balance Sheets                          45
            Consolidated Statements of Capitalization            46
            Consolidated Statements of Changes in Stockholders'
             Equity (Deficit)                                    47
            Notes to Consolidated Financial Statements           48

      2.    Supplemental Consolidated Schedules for the Years
            Ended December 31, 1995 to 1997.


      Schedules I to V, inclusive, are omitted because they are not
       applicable or not required.

      3.    Exhibits.

      Reference is made to the Exhibit Index commencing on page  81

(b)     Reports on Form 8-K and 8-K/A.

      Tucson Electric Power Company
      ------------------------------

      -- Form 8-K dated November 7, 1997 (filed November 14, 1997), reporting
   on Change in the Registrant's Certifying Accountant.
      -- Form 8-K/A dated November 7, 1997 (filed November 19, 1997),
   reporting on Change in the Registrant's Certifying Accountant.
      -- Form 8-K dated November 14, 1997 (filed November 17, 1997),
   reporting on Change in the Registrant's Certifying Accountant.
      -- Form 8-K dated November 19, 1997 (filed November 24, 1997),
   reporting on the Company's Holding Company Application and Financing
   Application.

      UniSource Energy Corporation and Tucson Electric Power Company
      --------------------------------------------------------------

      -- Form 8-K dated December 30, 1997 (filed January 6, 1997), reporting
   on the UniSource Energy/TEP share exchange and the new TEP Bank Credit
   Agreement.



                                   SIGNATURES
                                   ----------

      Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed
on its behalf by the undersigned thereunto duly authorized.

                                           UNISOURCE ENERGY CORPORATION


Date: March 2, 1998                 By   Ira R. Adler
                                       ------------------------------------
                                         IRA R. ADLER
                                         Senior Vice President and Principal
                                         Financial Officer

      Pursuant to the requirements of the Securities Exchange Act of 1934,
this report has been signed below by the following persons on behalf of the
registrant and in the capacities and on the dates indicated.



Date:  March 2, 1998                     Charles E. Bayless*
                                         ------------------------------------
                                         Charles E. Bayless
                                         Chairman of the Board, President and
                                         Principal Executive Officer



Date:  March 2, 1998                     Ira R. Adler
                                         ------------------------------------
                                         Ira R. Adler
                                         Principal Financial Officer



Date:  March 2, 1998                     Karen G. Kissinger*
                                         ------------------------------------
                                         Karen G. Kissinger
                                         Principal Accounting Officer



Date:  March 2, 1998                     Elizabeth T. Bilby*
                                         ------------------------------------
                                         Elizabeth T. Bilby
                                         Director



Date:  March 2, 1998                     Jose L. Canchola*
                                         ------------------------------------
                                         Jose L. Canchola
                                         Director



Date:  March 2, 1998                     John. L. Carter*
                                         ------------------------------------
                                         John L. Carter
                                         Director


Date:  March 2, 1998                     John A. Jeter*
                                         ------------------------------------
                                         John A. Jeter
                                         Director


Date:  March 2, 1998                     R. B. O'Rielly*
                                         ------------------------------------
                                         R. B. O'Rielly
                                         Director


Date:  March 2, 1998                     Martha R. Seger*
                                         ------------------------------------
                                         Martha R. Seger
                                         Director


Date:  March 2, 1998                     Donald G. Shropshire*
                                         ------------------------------------
                                         Donald G. Shropshire
                                         Director


Date:  March 2, 1998                     H. Wilson Sundt*
                                         ------------------------------------
                                         H. Wilson Sundt
                                         Director



Date:  March 2, 1998                  By      Ira R. Adler                 
                                         ------------------------------------
                                              Ira R. Adler
                                         as attorney-in-fact for each
                                         of the persons indicated




                                 SIGNATURES

      Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed
on its behalf by the undersigned thereunto duly authorized.

                                         TUCSON ELECTRIC POWER COMPANY


Date:  March 2, 1998                By   Ira R. Adler            
                                       --------------------------------------
                                         IRA R. ADLER
                                         Senior Vice President and Principal
                                         Financial Officer


      Pursuant to the requirements of the Securities Exchange Act of 1934,
this report has been signed below by the following persons on behalf of the
registrant and in the capacities and on the dates indicated.



Date:  March 2, 1998                     Charles E. Bayless*
                                         ------------------------------------
                                         Charles E. Bayless
                                         Chairman of the Board, President and
                                         Principal Executive Officer



Date:  March 2, 1998                     Ira R. Adler
                                         ------------------------------------
                                         Ira R. Adler
                                         Principal Financial Officer



Date:  March 2, 1998                     Karen G. Kissinger*
                                         ------------------------------------
                                         Karen G. Kissinger
                                         Principal Accounting Officer



Date:  March 2, 1998                     Elizabeth T. Bilby*
                                         ------------------------------------
                                         Elizabeth T. Bilby
                                         Director



Date:  March 2, 1998                     Jose L. Canchola*
                                         ------------------------------------
                                         Jose L. Canchola
                                         Director



Date:  March 2, 1998                     John. L. Carter*
                                         ------------------------------------
                                         John L. Carter
                                         Director


Date:  March 2, 1998                     John A. Jeter*
                                         ------------------------------------
                                         John A. Jeter
                                         Director


Date:  March 2, 1998                     R. B. O'Rielly*
                                         ------------------------------------
                                         R. B. O'Rielly
                                         Director


Date:  March 2, 1998                     Martha R. Seger*
                                         ------------------------------------
                                         Martha R. Seger
                                         Director


Date:  March 2, 1998                     Donald G. Shropshire*
                                         ------------------------------------
                                         Donald G. Shropshire
                                         Director


Date:  March 2, 1998                     H. Wilson Sundt*
                                         ------------------------------------
                                         H. Wilson Sundt
                                         Director



Date:  March 2, 1998                  By      Ira R. Adler                 
                                         ------------------------------------
                                              Ira R. Adler
                                         as attorney-in-fact for each
                                         of the persons indicated




                                  EXHIBIT INDEX

2(a)  -- Agreement and Plan of Exchange, dated as of March 20, 1995, between
         TEP, UniSource Energy and NCR Holding, Inc.

*3(a) -- Restated Articles of Incorporation of TEP, filed with the ACC on
         August 11, 1994, as amended by Amendment to Article Fourth of the
         Company's Restated Articles of Incorporation, filed with the ACC on
         May 17, 1996.  (Form 10-K for year ended December 31, 1996, File No.
         1-5924--Exhibit 3(a).)

*3(b) -- Bylaws of TEP, as amended May 20, 1994.  (Form 10-Q for the quarter
         ended June 30, 1994, File No. 1-5924--Exhibit 3.)

*3(c) -- Amended and Restated Articles of Incorporation of UniSource Energy.
         (Form 8-A/A, dated January 30, 1998, File No. 1-13739--Exhibit
         2(a).)

*3(d) -- Bylaws of UniSource Energy, as amended December 11, 1997.  (Form 8-
         A, dated December 23, 1997, File No. 1-13739--Exhibit 2(b).)

*4(a)(1)-- Indenture dated as of April 1, 1941, to The Chase National Bank of
         the City of New York, as Trustee.  (Form S-7, File No. 2-59906--
         Exhibit 2(b)(1).)

*4(a)(2)-- First Supplemental Indenture, dated as of October 1, 1946.  (Form
         S-7, File No. 2-59906--Exhibit 2(b)(2).)

*4(a)(3)-- Second Supplemental Indenture dated as of October 1, 1947.  (Form
         S-7, File No. 2-59906--Exhibit 2(b)(3).)

*4(a)(4)-- Third Supplemental Indenture, dated as of April 1, 1949.  (Form S-
         7, File No. 2-59906--Exhibit 2(b)(4).)

*4(a)(5)-- Fourth Supplemental Indenture, dated as of December 1, 1952.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(5).)

*4(a)(6)-- Fifth Supplemental Indenture, dated as of January 1, 1955.  (Form
         S-7, File No. 2-59906--Exhibit 2(b)(6).)

*4(a)(7)-- Sixth Supplemental Indenture, dated as of January 1, 1958.  (Form
         S-7, File No. 2-59906--Exhibit 2(b)(7).)

*4(a)(8)-- Seventh Supplemental Indenture, dated as of November 1, 1959.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(8).)

*4(a)(9)-- Eighth Supplemental Indenture, dated as of November 1, 1961.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(9).)

*4(a)(10)-- Ninth Supplemental Indenture, dated as of February 20, 1964.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(10).)

*4(a)(11)-- Tenth Supplemental Indenture, dated as of February 1, 1965.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(11).)

*4(a)(12)-- Eleventh Supplemental Indenture, dated as of February 1,
         1966.  (Form S-7, File No. 2-59906--Exhibit 2(b)(12).)

*4(a)(13)-- Twelfth Supplemental Indenture, dated as of November 1, 1969.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(13).)

*4(a)(14)-- Thirteenth Supplemental Indenture, dated as of January 20,
         1970.  (Form S-7, File No. 2-59906--Exhibit 2(b)(14).)

*4(a)(15)-- Fourteenth Supplemental Indenture, dated as of September 1,
         1971.  (Form S-7, File No. 2-59906--Exhibit 2(b)(15).)

*4(a)(16)-- Fifteenth Supplemental Indenture, dated as of March 1, 1972.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(16).)

*4(a)(17)-- Sixteenth Supplemental Indenture, dated as of May 1, 1973.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(17).)

*4(a)(18)-- Seventeenth Supplemental Indenture, dated as of November 1,
         1975.  (Form S-7, File No. 2-59906--Exhibit 2(b)(18).)

*4(a)(19)-- Eighteenth Supplemental Indenture, dated as of November 1,
         1975.  (Form S-7, File No. 2-59906--Exhibit 2(b)(19).)

*4(a)(20)-- Nineteenth Supplemental Indenture, dated as of July 1, 1976.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(20).)

*4(a)(21)-- Twentieth Supplemental Indenture, dated as of October 1,
         1977.  (Form S-7, File No. 2-59906--Exhibit 2(b)(21).)

*4(a)(22)-- Twenty-first Supplemental Indenture, dated as of November 1,
         1977.  (Form 10-K for year ended December 31, 1980, File No. 1-5924-
         -Exhibit 4(v).)

*4(a)(23)-- Twenty-second Supplemental Indenture, dated as of January 1,
         1978.  (Form 10-K for year ended December 31, 1980, File No. 1-5924-
         -Exhibit 4(w).)

*4(a)(24)-- Twenty-third Supplemental Indenture, dated as of July 1,
         1980.  (Form 10-K for year ended December 31, 1980, File No. 1-5924-
         -Exhibit 4(x).)

*4(a)(25)-- Twenty-fourth Supplemental Indenture, dated as of October 1,
         1980.  (Form 10-K for year ended December 31, 1980, File No. 1-5924-
         -Exhibit 4(y).)

*4(a)(26)-- Twenty-fifth Supplemental Indenture, dated as of April 1,
         1981.  (Form 10-Q for quarter ended March 31, 1981, File No. 1-5924-
         -Exhibit 4(a).)

*4(a)(27)-- Twenty-sixth Supplemental Indenture, dated as of April 1,
         1981.  (Form 10-Q for quarter ended March 31, 1981, File No. 1-5924-
         -Exhibit 4(b).)

*4(a)(28)-- Twenty-seventh Supplemental Indenture, dated as of October 1,
         1981.  (Form 10-Q for quarter ended September 30, 1982, File No. 1-
         5924--Exhibit 4(c).)

*4(a)(29)-- Twenty-eighth Supplemental Indenture, dated as of June 1,
         1990.  (Form 10-Q for quarter ended June 30, 1990, File No. 1-5924--
         Exhibit 4(a)(1).)

*4(a)(30)-- Twenty-ninth Supplemental Indenture, dated as of December 1,
         1992.  (Form S-1, Registration No. 33-55732--Exhibit 4(a)(30).)

*4(a)(31)-- Thirtieth Supplemental Indenture, dated as of December 1,
         1992.  (Form S-1, Registration No. 33-55732--Exhibit 4(a)(31).)

*4(a)(32)-- Thirty-first Supplemental Indenture, dated as of May 1, 1996.
         (Form 10-K for the year ended December 31, 1996, File No. 1-5924--
         Exhibit 4(a)(32).)

*4(a)(33)-- Thirty-second Supplemental Indenture, dated as of May 1,
         1996.  (Form 10-K for the year ended December 31, 1996, File No. 1-
         5924--Exhibit 4(a)(33).)

*4(b)(1)-- Installment Sale Agreement, dated as of December 1, 1973, among
         the City of Farmington, New Mexico, Public Service Company of New
         Mexico and TEP. (Form 8-K for the month of January 1974, File No. 0-
         269--Exhibit 3.)

*4(b)(2)-- Ordinance No. 486, adopted December 17, 1973, of the City of
         Farmington, New Mexico. (Form 8-K for the month of January 1974,
         File No. 0-269--Exhibit 4.)

*4(b)(3)-- Amended and Restated Installment Sale Agreement dated as of April
         1, 1997, between the City of Farmington, New Mexico and TEP relating
         to Pollution Control Revenue Bonds, 1997 Series A (Tucson Electric
         Power Company San Juan Project).  (Form 10-Q for the quarter ended
         March 31, 1997, File No. 1-5924--Exhibit 4(a).)

*4(b)(4)-- City of Farmington, New Mexico Ordinance No. 97-1055, adopted
         April 17, 1997, authorizing Pollution Control Revenue Bonds, 1997
         Series A (Tucson Electric Power Company San Juan Project).  (Form
         10-Q for the quarter ended March 31, 1997, File No. 1-5924--Exhibit
         4(b).)

*4(c)(1)-- Loan Agreement, dated as of September 15, 1981, between the
         Industrial Development Authority of the County of Apache, Arizona
         and TEP, relating to Floating Rate Monthly Demand Pollution Control
         Revenue Bonds, 1981 Series A (Tucson Electric Power Company
         Project).  (Form 10-K for year ended December 31, 1981, File No. 1-
         5924--Exhibit 4(d)(1).)

*4(c)(2)-- Indenture of Trust, dated as of September 15, 1981, between the
         Apache County Authority and Morgan Guaranty Trust Company of New
         York, authorizing Floating Rate Monthly Demand Pollution Control
         Revenue Bonds, 1981 Series A (Tucson Electric Power Company
         Project).  (Form 10-K for year ended December 31, 1981, File No. 1-
         5924--Exhibit 4(d)(2).)

*4(d)(1)-- Second Supplemental Loan Agreement, dated as of October 1, 1981,
         between the Apache County Authority and TEP, relating to Floating
         Rate Monthly Demand Pollution Control Revenue Bonds, 1981 Series B
         (Tucson Electric Power Company Project).  (Form 10-K for year ended
         December 31, 1982, File No. 1-5924--Exhibit 4(f)(1).)

*4(d)(2) -- Second Supplemental Indenture, dated as of October 1, 1981, between
         the Apache County Authority and Morgan Guaranty, relating to Floating
         Rate Monthly Demand Pollution Control Revenue Bonds, 1981 Series B
         (Tucson Electric Power Company Project).  (Form 10-K for year ended
         December 31, 1982, File No. 1-5924--Exhibit 4(f)(2).)

*4(d)(3) -- Third Supplemental Loan Agreement, dated as of
         December 1, 1985, between the Apache County Authority and TEP,
         relating to Floating Rate Monthly Demand Pollution Control Revenue
         Bonds, 1981 Series B (Tucson Electric Power Company Project).  (Form
         10-K for the year ended December 31, 1987, File No. 1-5924--Exhibit
         4(d)(3).)

*4(d)(4)-- Third Supplemental Indenture, dated as of December 1, 1985,
         between the Apache County Authority and Morgan Guaranty, relating to
         Floating Rate Monthly Demand Pollution Control Revenue Bonds, 1981
         Series B (Tucson Electric Power Company Project).  (Form 10-K for
         the year ended December 31, 1987, File No. 1-5924--Exhibit 4(d)(4).)

*4(d)(5)-- Fourth Supplemental Indenture of Trust, dated as of March 31,
         1992, between the Apache County Authority and Morgan Guaranty,
         relating to Pollution Control Revenue Bonds, 1981 Series B (Tucson
         Electric Power Company Project). (Form S-4, Registration No. 33-
         52860--Exhibit 4(d)(5).)

*4(d)(6)-- Fourth Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Apache County Authority and TEP, relating to Pollution
         Control Revenue Bonds, 1981 Series B (Tucson Electric Power Company
         Project). (Form S-4, Registration No. 33-52860--Exhibit 4(d)(6).)

*4(e)(1)-- Loan Agreement, dated as of October 1, 1982, between the Pima
         County Authority and TEP relating to Floating Rate Monthly Demand
         Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric
         Power Company Irvington Project). (Form 10-Q for quarter ended
         September 30, 1982, File No. 1-5924--Exhibit 4(a).)

*4(e)(2)-- Indenture of Trust, dated as of October 1, 1982, between the Pima
         County Authority and Morgan Guaranty authorizing Floating Rate
         Monthly Demand Industrial Development Revenue Bonds, 1982 Series A
         (Tucson Electric Power Company Irvington Project). (Form 10-Q for
         quarter ended September 30, 1982, File No. 1-5924--Exhibit 4(b).)

*4(e)(3)-- First Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Pima County Authority and TEP relating to Industrial
         Development Revenue Bonds, 1982 Series A (Tucson Electric Power
         Company Irvington Project).  (Form S-4, Registration No. 33-52860--
         Exhibit 4(h)(3).)

*4(e)(4)-- First Supplemental Indenture of Trust, dated as of March 31, 1992,
         between the Pima County Authority and Morgan Guaranty relating to
         Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric
         Power Company Irvington Project). (Form S-4, Registration No. 33-
         52860--Exhibit 4(h)(4).)

*4(f)(1)-- Loan Agreement, dated as of December 1, 1982, between the Pima
         County Authority and TEP relating to Floating Rate Monthly Demand
         Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric
         Power Company Projects). (Form 10-K for year ended December 31,
         1982, File No. 1-5924--Exhibit 4(k)(1).)

*4(f)(2)-- Indenture of Trust, dated as of December 1, 1982, between the Pima
         County Authority and Morgan Guaranty authorizing Floating Rate
         Monthly Demand Industrial Development Revenue Bonds, 1982 Series A
         (Tucson Electric Power Company Projects). (Form 10-K for year ended
         December 31, 1982, File No. 1-5924--Exhibit 4(k)(2).)

*4(f)(3)-- First Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Pima County Authority and TEP relating to Industrial
         Development Revenue Bonds, 1982 Series A (Tucson Electric Power
         Company Projects). (Form S-4, Registration No. 33-52860--Exhibit
         4(i)(3).)

*4(f)(4)-- First Supplemental Indenture of Trust, dated as of March 31, 1992,
         between the Pima County Authority and Morgan Guaranty relating to
         Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric
         Power Company Projects). (Form S-4, Registration No. 33-52860--
         Exhibit 4(i)(4).)

*4(g)(1)-- Loan Agreement, dated as of December 1, 1983, between the Apache
         County Authority and TEP relating to Floating Rate Monthly Demand
         Industrial Development Revenue Bonds, 1983 Series A (Tucson Electric
         Power Company Springerville Project). (Form 10-K for year ended
         December 31, 1983, File No. 1-5924--Exhibit 4(l)(1).)

*4(g)(2)-- Indenture of Trust, dated as of December 1, 1983, between the
         Apache County Authority and Morgan Guaranty authorizing Floating
         Rate Monthly Demand Industrial Development Revenue Bonds, 1983
         Series A (Tucson Electric Power Company Springerville Project).
         (Form 10-K for year ended December 31, 1983, File No. 1-5924--
         Exhibit 4(l)(2).)

*4(g)(3)-- First Supplemental Loan Agreement, dated as of December 1, 1985,
         between the Apache County Authority and TEP relating to Floating
         Rate Monthly Demand Industrial Development Revenue Bonds, 1983
         Series A (Tucson Electric Power Company Springerville Project).
         (Form 10-K for the year ended December 31, 1987, File No. 1-5924--
         Exhibit 4(k)(3).)

*4(g)(4)-- First Supplemental Indenture, dated as of December 1, 1985,
         between the Apache County Authority and Morgan Guaranty relating to
         Floating Rate Monthly Demand Industrial Development Revenue Bonds,
         1983 Series A (Tucson Electric Power Company Springerville Project).
         (Form 10-K for the year ended December 31, 1987, File No. 1-5924--
         Exhibit 4(k)(4).)

*4(g)(5)-- Second Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Apache County Authority and TEP relating to Industrial
         Development Revenue Bonds, 1983 Series A (Tucson Electric Power
         Company Springerville Project).  (Form S-4, Registration No. 33-
         52860--Exhibit 4(k)(5).)

*4(g)(6)-- Second Supplemental Indenture of Trust, dated as of March 31,
         1992, between the Apache County Authority and Morgan Guaranty
         relating to Industrial Development Revenue Bonds, 1983 Series A
         (Tucson Electric Power Company Springerville Project).  (Form S-4,
         Registration No. 33-52860--Exhibit 4(k)(6).)

*4(h)(1)-- Loan Agreement, dated as of December 1, 1983, between the Apache
         County Authority and TEP relating to Variable Rate Demand Industrial
         Development Revenue Bonds, 1983 Series B (Tucson Electric Power
         Company Springerville Project). (Form 10-K for year ended December
         31, 1983, File No. 1-5924--Exhibit 4(m)(1).)

*4(h)(2)-- Indenture of Trust, dated as of December 1, 1983, between the
         Apache County Authority and Morgan Guaranty authorizing Variable
         Rate Demand Industrial Development Revenue Bonds, 1983 Series B
         (Tucson Electric Power Company Springerville Project). (Form 10-K
         for year ended December 31, 1983, File No. 1-5924--Exhibit 4(m)(2).)

*4(h)(3)-- First Supplemental Loan Agreement, dated as of December 1, 1985,
         between the Apache County Authority and TEP relating to Floating
         Rate Monthly Demand Industrial Development Revenue Bonds, 1983
         Series B (Tucson Electric Power Company Springerville Project).
         (Form 10-K for the year ended December 31, 1987, File No. 1-5924--
         Exhibit 4(l)(3).)

*4(h)(4)-- First Supplemental Indenture, dated as of December 1, 1985,
         between the Apache County Authority and Morgan Guaranty relating to
         Floating Rate Monthly Demand Industrial Development Revenue Bonds,
         1983 Series B (Tucson Electric Power Company Springerville Project).
         (Form 10-K for the year ended December 31, 1987, File No. 1-5924--
         Exhibit 4(l)(4).)

*4(h)(5)-- Second Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Apache County Authority and TEP relating to Industrial
         Development Revenue Bonds, 1983 Series B (Tucson Electric Power
         Company Springerville Project).  (Form S-4, Registration No. 33-
         52860--Exhibit 4(l)(5).)

*4(h)(6)-- Second Supplemental Indenture of Trust, dated as of March 31,
         1992, between the Apache County Authority and Morgan Guaranty
         relating to Industrial Development Revenue Bonds, 1983 Series B
         (Tucson Electric Power Company Springerville Project).  (Form S-4,
         Registration No. 33-52860--Exhibit 4(l)(6).)

*4(i)(1)-- Loan Agreement, dated as of December 1, 1983, between the Apache
         County Authority and TEP relating to Variable Rate Demand Industrial
         Development Revenue Bonds, 1983 Series C (Tucson Electric Power
         Company Springerville Project). (Form 10-K for year ended December
         31, 1983, File No. 1-5924--Exhibit 4(n)(1).)

*4(i)(2)-- Indenture of Trust, dated as of December 1, 1983, between the
         Apache County Authority and Morgan Guaranty authorizing Variable
         Rate Demand Industrial Development Revenue Bonds, 1983 Series C
         (Tucson Electric Power Company Springerville Project).  (Form 10-K
         for year ended December 31, 1983, File No. 1-5924--Exhibit 4(n)(2).)

*4(i)(3)-- First Supplemental Loan Agreement, dated as of December 1, 1985,
         between the Apache County Authority and TEP relating to Floating
         Rate Monthly Demand Industrial Development Revenue Bonds, 1983
         Series C (Tucson Electric Power Company Springerville Project).
         (Form 10-K for the year ended December 31, 1987, File No. 1-5924--
         Exhibit 4(m)(3).)

*4(i)(4)-- First Supplemental Indenture, dated as of December 1, 1985,
         between the Apache County Authority and Morgan Guaranty relating to
         Floating Rate Monthly Demand Industrial Development Revenue Bonds,
         1983 Series C (Tucson Electric Power Company Springerville Project).
         (Form 10-K for the year ended December 31, 1987, File No. 1-5924--
         Exhibit 4(m)(4).)

*4(i)(5)-- Second Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Apache County Authority and TEP relating to Industrial
         Development Revenue Bonds, 1983 Series C (Tucson Electric Power
         Company Springerville Project).  (Form S-4, Registration No. 33-
         52860--Exhibit 4(m)(5).)

*4(i)(6)-- Second Supplemental Indenture of Trust, dated as of March 31,
         1992, between the Apache County Authority and Morgan Guaranty
         relating to Industrial Development Revenue Bonds, 1983 Series C
         (Tucson Electric Power Company Springerville Project).  (Form S-4,
         Registration No. 33-52860--Exhibit 4(m)(6).)

*4(j) -- Reimbursement Agreement, dated as of September 15, 1981, as amended,
         between TEP and Manufacturers Hanover Trust Company. (Form 10-K for
         the year ended December 31, 1984, File No. 1-5924--Exhibit 4(o)(4).)

*4(k)(1)-- Loan Agreement, dated as of December 1, 1985, between the Apache
         County Authority and TEP relating to Variable Rate Demand Industrial
         Development Revenue Bonds, 1985 Series A (Tucson Electric Power
         Company Springerville Project). (Form 10-K for the year ended
         December 31, 1985, File No. 1-5924---Exhibit 4(r)(1).)

*4(k)(2)-- Indenture of Trust, dated as of December 1, 1985, between the
         Apache County Authority and Morgan Guaranty authorizing Variable
         Rate Demand Industrial Development Revenue Bonds, 1985 Series A
         (Tucson Electric Power Company Springerville Project). (Form 10-K
         for the year ended December 31, 1985, File No. 1-5924--Exhibit
         4(r)(2).)

*4(k)(3)-- First Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Apache County Authority and TEP relating to Industrial
         Development Revenue Bonds, 1985 Series A (Tucson Electric Power
         Company Springerville Project).  (Form S-4, Registration No. 33-
         52860--Exhibit 4(o)(3).)

*4(k)(4)-- First Supplemental Indenture of Trust, dated as of March 31, 1992,
         between the Apache County Authority and Morgan Guaranty relating to
         Industrial Development Revenue Bonds, 1985 Series A (Tucson Electric
         Power Company Springerville Project).  (Form S-4, Registration No.
         33-52860--Exhibit 4(o)(4).)

*4(l) -- Warrant Agreement and Form of Warrant, dated as of December 15,
         1992.  (Form S-1, Registration No. 33-55732--Exhibit 4(q).)

*4(m)(1)-- Indenture of Mortgage and Deed of Trust dated as of December 1,
         1992, to Bank of Montreal Trust Company, Trustee.  (Form S-1,
         Registration No. 33-55732--Exhibit 4(r)(1).)

*4(m)(2)-- Supplemental Indenture No. 1 creating a series of bonds designated
         Second Mortgage Bonds, Collateral Series A, dated as of December 1,
         1992.  (Form S-1, Registration No. 33-55732-Exhibit 4(r)(2).)

4(m)(3)--Supplemental Indenture No. 2 creating a series of bonds designated
         Second Mortgage Bonds, Collateral Series B, dated as of December 1,
         1997.

*4(n)(1)-- Loan Agreement, dated as of April 1, 1997, between Coconino
         County, Arizona Pollution Control Corporation and TEP relating to
         Pollution Control Revenue Bonds, 1997 Series A (Tucson Electric
         Power Company Navajo Project).  (Form 10-Q for the quarter ended
         March 31, 1997, File No. 1-5924--Exhibit 4(c).)

*4(n)(2)-- Indenture of Trust, dated as of April 1, 1997, between Coconino
         County, Arizona Pollution Control Corporation and First Trust of New
         York, National Association, authorizing Pollution Control Revenue
         Bonds, 1997 Series A  (Tucson Electric Power Company Navajo
         Project).  (Form 10-Q for the quarter ended March 31, 1997, File No.
         1-5924--Exhibit 4(d).)

*4(o)(1)-- Loan Agreement, dated as of April 1, 1997, between Coconino
         County, Arizona Pollution Control Corporation and TEP relating to
         Pollution Control Revenue Bonds, 1997 Series B (Tucson Electric
         Power Company Navajo Project).  (Form 10-Q for the quarter ended
         March 31, 1997, File No. 1-5924--Exhibit 4(e).)

*4(o)(2)-- Indenture of Trust, dated as of April 1, 1997, between Coconino
         County, Arizona Pollution Control Corporation and First Trust of New
         York, National Association, authorizing Pollution Control Revenue
         Bonds, 1997 Series B  (Tucson Electric Power Company Navajo
         Project). (Form 10-Q for the quarter ended March 31, 1997, File No.
         1-5924--Exhibit 4(f).)

*4(p)(1)-- Loan Agreement, dated as of September 15, 1997, between The
         Industrial Development Authority of the County of Pima and TEP
         relating to Industrial Development Revenue Bonds, 1997 Series A
         (Tucson Electric Power Company Project).  (Form 10-Q for the quarter
         ended September 30, 1997, File No. 1-5924--Exhibit 4(a).)

*4(p)(2)-- Indenture of Trust, dated as of September 15, 1997, between The
         Industrial Development Authority of the County of Pima and First
         Trust of New York, National Association, authorizing Industrial
         Development Revenue Bonds, 1997 Series A (Tucson Electric Power
         Company Project).  (Form 10-Q for the quarter ended September 30,
         1997, File No. 1-5924--Exhibit 4(b).)

*4(q)(1)-- Loan Agreement, dated as of September 15, 1997, between The
         Industrial Development Authority of the County of Pima and TEP
         relating to Industrial Development Revenue Bonds, 1997 Series B
         (Tucson Electric Power Company Project).  (Form 10-Q for the quarter
         ended September 30, 1997, File No. 1-5924--Exhibit 4(c).)

*4(q)(2)-- Indenture of Trust, dated as of September 15, 1997, between The
         Industrial Development Authority of the County of Pima and First
         Trust of New York, National Association, authorizing Industrial
         Development Revenue Bonds, 1997 Series B (Tucson Electric Power
         Company Project).  (Form 10-Q for the quarter ended September 30,
         1997, File No. 1-5924--Exhibit 4(d).)

*4(r)(1)-- Loan Agreement, dated as of September 15, 1997, between The
         Industrial Development Authority of the County of Pima and TEP
         relating to Industrial Development Revenue Bonds, 1997 Series C
         (Tucson Electric Power Company Project).  (Form 10-Q for the quarter
         ended September 30, 1997, File No. 1-5924--Exhibit 4(e).)

*4(r)(2)-- Indenture of Trust, dated as of September 15, 1997, between The
         Industrial Development Authority of the County of Pima and First
         Trust of New York, National Association, authorizing Industrial
         Development Revenue Bonds, 1997 Series C (Tucson Electric Power
         Company Project).  (Form 10-Q for the quarter ended September 30,
         1997, File No. 1-5924--Exhibit 4(f).)

*10(a)(1)--Lease Agreements, dated as of December 1, 1984, between
         Valencia and United States Trust Company of New York, as Trustee,
         and Thomas B. Zakrzewski, as Co-Trustee, as amended and
         supplemented. (Form 10-K for the year ended December 31, 1984, File
         No. 1-5924--Exhibit 10(d)(1).)

*10(a)(2)--Guaranty and Agreements, dated as of December 1, 1984,
         between TEP and United States Trust Company of New York, as Trustee,
         and Thomas B. Zakrzewski, as Co-Trustee. (Form 10-K for the year
         ended December 31, 1984, File No. 1-5924--Exhibit 10(d)(2).)

*10(a)(3)--General Indemnity Agreements, dated as of December 1, 1984,
         between Valencia and TEP, as Indemnitors; General Foods Credit
         Corporation, Harvey Hubbell Financial, Inc. and J. C. Penney
         Company, Inc. as Owner Participants; United States Trust Company of
         New York, as Owner Trustee; Teachers Insurance and Annuity
         Association of America as Loan Participant; and Marine Midland Bank,
         N.A., as Indenture Trustee. (Form 10-K for the year ended December
         31, 1984, File No. 1-5924--Exhibit 10(d)(3).)

*10(a)(4)--Tax Indemnity Agreements, dated as of December 1, 1984,
         between General Foods Credit Corporation, Harvey Hubbell Financial,
         Inc. and J. C. Penney Company, Inc., each as Beneficiary under a
         separate Trust Agreement dated December 1, 1984, with United States
         Trust of New York as Owner Trustee, and Thomas B. Zakrzewski as Co-
         Trustee, Lessor, and Valencia, Lessee, and TEP, Indemnitors. (Form
         10-K for the year ended December 31, 1984, File No. 1-5924--Exhibit
         10(d)(4).)

*10(a)(5)--Amendment No. 1, dated December 31, 1984, to the Lease
         Agreements, dated December 1, 1984, between Valencia and United
         States Trust Company of New York, as Owner Trustee, and Thomas B.
         Zakrzewski as Co-Trustee. (Form 10-K for the year ended December 31,
         1986, File No. 1-5924--Exhibit 10(e)(5).)

*10(a)(6)--Amendment No. 2, dated April 1, 1985, to the Lease
         Agreements, dated December 1, 1984, between Valencia and United
         States Trust Company of New York, as Owner Trustee, and Thomas B.
         Zakrzewski as Co-Trustee. (Form 10-K for the year ended December 31,
         1986, File No. 1-5924--Exhibit 10(e)(6).)

*10(a)(7)--Amendment No. 3, dated August 1, 1985, to the Lease
         Agreements, dated December 1, 1984, between Valencia and United
         States Trust Company of New York, as Owner Trustee, and Thomas
         Zakrzewski as Co-Trustee.  (Form 10-K for the year ended December
         31, 1986, File No. 1-5924--Exhibit 10(e)(7).)

*10(a)(8)--Amendment No. 4, dated June 1, 1986, to the Lease Agreement,
         dated December 1, 1984, between Valencia and United States Trust
         Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-
         Trustee, under a Trust Agreement dated as of December 1, 1984, with
         General Foods Credit Corporation as Owner Participant. (Form 10-K
         for the year ended December 31, 1986, File No. 1-5924--Exhibit
         10(e)(8).)

*10(a)(9)--Amendment No. 4, dated June 1, 1986, to the Lease Agreement,
         dated December 1, 1984, between Valencia and United States Trust
         Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-
         Trustee, under a Trust Agreement dated as of December 1, 1984, with
         J. C. Penney Company, Inc. as Owner Participant. (Form 10-K for the
         year ended December 31, 1986, File No. 1-5924--Exhibit 10(e)(9).)

*10(a)(10)--Amendment No. 4, dated June 1, 1986, to the Lease Agreement,
         dated December 1, 1984, between Valencia and United States Trust
         Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-
         Trustee, under a Trust Agreement dated as of December 1, 1984, with
         Harvey Hubbell Financial Inc. as Owner Participant. (Form 10-K for
         the year ended December 31, 1986, File No. 1-5924--Exhibit
         10(e)(10).)

*10(a)(11)--Lease Amendment No. 5 and Supplement No. 2, to the Lease
         Agreement, dated July 1, 1986, between Valencia, United States Trust
         Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-
         Trustee and J. C. Penney as Owner Participant. (Form 10-K for the
         year ended December 31, 1986, File No. 1-5924--Exhibit 10(e)(11).)

*10(a)(12)--Lease Amendment No. 5, to the Lease Agreement, dated June 1,
         1987, between Valencia, United States Trust Company of New York as
         Owner Trustee, and Thomas Zakrzewski as Co-Trustee and General Foods
         Credit Corporation as Owner Participant.  (Form 10-K for the year
         ended December 31, 1988, File No. 1-5924--Exhibit 10(f)(12).)

*10(a)(13)--Lease Amendment No. 5, to the Lease Agreement, dated June 1,
         1987, between Valencia, United States Trust Company of New York as
         Owner Trustee, and Thomas Zakrzewski as Co-Trustee and Harvey
         Hubbell Financial Inc. as Owner Participant. (Form 10-K for the year
         ended December 31, 1988, File No. 1-5924--Exhibit 10(f)(13).)

*10(a)(14)--Lease Amendment No. 6, to the Lease Agreement, dated June 1,
         1987, between Valencia, United States Trust Company of New York as
         Owner Trustee, and Thomas Zakrzewski as Co-Trustee and J. C. Penney
         Company, Inc. as Owner Participant. (Form 10-K for the year ended
         December 31, 1988, File No. 1-5924--Exhibit 10(f)(14).)

*10(a)(15)--Lease Supplement No. 1, dated December 31, 1984, to Lease
         Agreements, dated December 1, 1984, between Valencia, as Lessee and
         United States Trust Company of New York and Thomas B. Zakrzewski, as
         Owner Trustee and Co-Trustee, respectively (document filed relates
         to General Foods Credit Corporation; documents relating to Harvey
         Hubbel Financial, Inc. and JC Penney Company, Inc. are not filed but
         are substantially similar). (Form S-4, Registration No. 33-52860--
         Exhibit 10(f)(15).)

*10(a)(16)--Amendment No. 1, dated June 1, 1986, to the General Indemnity
         Agreement, dated as of December 1, 1984, between Valencia and TEP,
         as Indemnitors, General Foods Credit Corporation, as Owner
         Participant, United States Trust Company of New York, as Owner
         Trustee, Teachers Insurance and Annuity Association of America, as
         Loan Participant, and Marine Midland Bank, N.A., as Indenture
         Trustee. (Form 10-K for the year ended December 31, 1986, File No.
         1-5924--Exhibit 10(e)(12).)

*10(a)(17)--Amendment No. 1, dated June 1, 1986, to the General Indemnity
         Agreement, dated as of December 1, 1984, between Valencia and TEP,
         as Indemnitors, J. C. Penney Company, Inc., as Owner Participant,
         United States Trust Company of New York, as Owner Trustee, Teachers
         Insurance and Annuity Association of America, as Loan Participant,
         and Marine Midland Bank, N.A., as Indenture Trustee. (Form 10-K for
         the year ended December 31, 1986, File No. 1-5924--Exhibit
         10(e)(13).)

*10(a)(18)--Amendment No. 1, dated June 1, 1986, to the General Indemnity
         Agreement, dated as of December 1, 1984, between Valencia and TEP,
         as Indemnitors, Harvey Hubbell Financial, Inc., as Owner
         Participant, United States Trust Company of New York, as Owner
         Trustee, Teachers Insurance and Annuity Association of America, as
         Loan Participant, and Marine Midland Bank, N.A., as Indenture
         Trustee.  (Form 10-K for the year ended December 31, 1986, File No.
         1-5924--Exhibit 10(e)(14).)

*10(a)(19)--Amendment No. 2, dated as of July 1, 1986, to the General
         Indemnity Agreement, dated as of December 1, 1984, between Valencia
         and TEP, as Indemnitors, J. C. Penney Company, Inc., as Owner
         Participant, United States Trust Company of New York, as Owner
         Trustee, Teachers Insurance and Annuity Association of America, as
         Loan Participant, and Marine Midland Bank, N.A., as Indenture
         Trustee. (Form S-4, Registration No. 33-52860--Exhibit 10(f)(19).)

*10(a)(20)--Amendment No. 2, dated as of June 1, 1987, to the General
         Indemnity Agreement, dated as of December 1, 1984, between Valencia
         and TEP, as Indemnitors, General Foods Credit Corporation, as Owner
         Participant, United States Trust Company of New York, as Owner
         Trustee, Teachers Insurance and Annuity Association of America, as
         Loan Participant, and Marine Midland Bank, N.A., as Indenture
         Trustee. (Form S-4, Registration No. 33-52860--Exhibit 10(f)(20).)

*10(a)(21)--Amendment No. 2, dated as of June 1, 1987, to the General
         Indemnity Agreement, dated as of December 1, 1984, between Valencia
         and TEP, as Indemnitors, Harvey Hubbell Financial, Inc., as Owner
         Participant, United States Trust Company of New York, as Owner
         Trustee, Teachers Insurance and Annuity Association of America, as
         Loan Participant, and Marine Midland Bank, N.A., as Indenture
         Trustee. (Form S-4, Registration No. 33-52860--Exhibit 10(f)(21).)

*10(a)(22)-- Amendment No. 3, dated as of June 1, 1987, to the General
         Indemnity Agreement, dated as of December 1, 1984, between Valencia
         and TEP, as Indemnitors, J. C. Penney Company, Inc., as Owner
         Participant, United States Trust Company of New York, as Owner
         Trustee, Teachers Insurance and Annuity Association of America, as
         Loan Participant, and Marine Midland Bank, N.A., as Indenture
         Trustee. (Form S-4, Registration No. 33-52860--Exhibit 10(f)(22).)

*10(a)(23)--Supplemental Tax Indemnity Agreement, dated July 1, 1986,
         between J. C. Penney Company, Inc., as Owner Participant, and
         Valencia and TEP, as Indemnitors. (Form 10-K for the year ended
         December 31, 1986, File No. 1-5924--Exhibit 10(e)(15).)

*10(a)(24)--Supplemental General Indemnity Agreement, dated as of July 1,
         1986, among Valencia and TEP, as Indemnitors, J. C. Penney Company,
         Inc., as Owner Participant, United States Trust Company of New York,
         as Owner Trustee, Teachers Insurance and Annuity Association of
         America, as Loan Participant, and Marine Midland Bank, N.A., as
         Indenture Trustee. (Form 10-K for the year ended December 31, 1986,
         File No. 1-5924--Exhibit 10(e)(16).)

*10(a)(25)--Amendment No. 1, dated as of June 1, 1987, to the
         Supplemental General Indemnity Agreement, dated as of July 1, 1986,
         among Valencia and TEP, as Indemnitors, J. C. Penney Company, Inc.,
         as Owner Participant, United States Trust Company of New York, as
         Owner Trustee, Teachers Insurance and Annuity Association of
         America, as Loan Participant, and Marine Midland Bank, N.A., as
         Indenture Trustee. (Form S-4, Registration No. 33-52860--Exhibit
         10(f)(25).)

*10(a)(26)--Valencia Agreement, dated as of June 30, 1992, among TEP, as
         Guarantor, Valencia, as Lessee, Teachers Insurance and Annuity
         Association of America, as Loan Participant, Marine Midland Bank,
         N.A., as Indenture Trustee, United States Trust Company of New York,
         as Owner Trustee, and Thomas B. Zakrzewski, as Co-Trustee, and the
         Owner Participants named therein relating to the Restructuring of
         Valencia's lease of the coal-handling facilities at the
         Springerville Generating Station. (Form S-4, Registration No. 33-
         52860--Exhibit 10(f)(26).)

*10(a)(27)--Amendment, dated as of December 15, 1992, to the Lease
         Agreements, dated December 1, 1984, between Valencia, as Lessee, and
         United States Trust Company of New York, as Owner Trustee, and
         Thomas B. Zakrzewski, as Co-Trustee.  (Form S-1, Registration No.
         33-55732--Exhibit 10(f)(27).)

*10(b)(1)--Lease Agreements, dated as of December 1, 1985, between TEP
         and San Carlos Resources Inc. (San Carlos) (a wholly-owned
         subsidiary of the Registrant) jointly and severally, as Lessee, and
         Wilmington Trust Company, as Trustee, as amended and supplemented.
         (Form 10-K for the year ended December 31, 1985, File No. 1-5924--
         Exhibit 10(f)(1).)

*10(b)(2)--Tax Indemnity Agreements, dated as of December 1, 1985,
         between Philip Morris Credit Corporation, IBM Credit Financing
         Corporation and Emerson Finance Co., each as beneficiary under a
         separate trust agreement, dated as of December 1, 1985, with
         Wilmington Trust Company, as Owner Trustee, and William J. Wade, as
         Co-Trustee, and TEP and San Carlos, as Lessee.  (Form 10-K for the
         year ended December 31, 1985, File No. 1-5924--Exhibit 10(f)(2).)

*10(b)(3)--Participation Agreement, dated as of December 1, 1985, among
         TEP and San Carlos as Lessee, Philip Morris Credit Corporation, IBM
         Credit Financing Corporation, and Emerson Finance Co. as Owner
         Participants, Wilmington Trust Company as Owner Trustee, The
         Sumitomo Bank, Limited, New York Branch, as Loan Participant, and
         Bankers Trust Company, as Indenture Trustee. (Form 10-K for the year
         ended December 31, 1985, File No. 1-5924--Exhibit 10(f)(3).)

*10(b)(4)--Restructuring Commitment Agreement, dated as of June 30,
         1992, among TEP and San Carlos, jointly and severally, as Lessee,
         Philip Morris Credit Corporation, IBM Credit Financing Corporation
         and Emerson Capital Funding William J. Wade, as Owner Trustee and
         Co-Trustee, respectively, The Sumitomo Bank, Limited, New York
         Branch, as Loan Participant and United States Trust Company of New
         York, as Indenture Trustee. (Form S-4, Registration No. 33-52860--
         Exhibit 10(g)(4).)

*10(b)(5)--Lease Supplement No. 1, dated December 31, 1985, to Lease
         Agreements, dated as of December 1, 1985, between TEP and San
         Carlos, jointly and severally, as Lessee Trustee and Co-Trustee,
         respectively (document filed relates to Philip Morris Credit
         Corporation; documents relating to IBM Credit Financing Corporation
         and Emerson Financing Co. are not filed but are substantially
         similar). (Form S-4, Registration No. 33-52860--Exhibit 10(g)(5).)

*10(b)(6)--Amendment No. 1, dated as of December 15, 1992, to Lease
         Agreements, dated as of December 1, 1985, between TEP and San
         Carlos, jointly and severally, as Lessee, and Wilmington Trust
         Company and William J. Wade, as Owner Trustee and Co-Trustee,
         respectively, as Lessor.  (Form S-1, Registration No. 33-55732--
         Exhibit 10(g)(6).)

*10(b)(7)--Amendment No. 1, dated as of December 15, 1992, to Tax
         Indemnity Agreements, dated as of December 1, 1985, between Philip
         Morris Credit Corporation, IBM Credit Financing Corporation and
         Emerson Capital Funding Corp., as Owner Participants and TEP and San
         Carlos, jointly and severally, as Lessee.  (Form S-1, Registration
         No. 33-55732--Exhibit 10(g)(7).)

*10(c)(1)--Amended and Restated Participation Agreement, dated as of
         November 15, 1987, among TEP, as Lessee, Ford Motor Credit Company,
         as Owner Participant, Financial Security Assurance Inc., as Surety,
         Wilmington Trust Company and William J. Wade in their respective
         individual capacities as provided therein, but otherwise solely as
         Owner Trustee and Co-Trustee under the Trust Agreement, and Morgan
         Guaranty, in its individual capacity as provided therein, but
         Secured Party. (Form 10-K for the year ended December 31, 1987, File
         No. 1-5924--Exhibit 10(j)(1).)

*10(c)(2)--Lease Agreement, dated as of January 14, 1988, between
         Wilmington Trust Company and William J. Wade, as Owner Trust
         Agreement described therein, dated as of November 15, 1987, between
         such parties and Ford Motor Credit Company, as Lessor, and TEP, as
         Lessee. (Form 10-K for the year ended December 31, 1987, File No. 1-
         5924--Exhibit 10(j)(2).)

*10(c)(3)--Tax Indemnity Agreement, dated as of January 14, 1988,
         between TEP, as Lessee, and Ford Motor Credit Company, as Owner
         Participant, beneficiary under a Trust Agreement, dated as of
         November 15, 1987, with Wilmington Trust Company and William J.
         Wade, Owner Trustee and Co-Trustee, respectively, together as
         Lessor. (Form 10-K for the year ended December 31, 1987, File No. 1-
         5924--Exhibit 10(j)(3).)

*10(c)(4)--Loan Agreement, dated as of January 14, 1988, between the
         Pima County Authority and Wilmington Trust Company and William J.
         Wade in their respective individual capacities as expressly stated,
         but otherwise solely as Owner Trustee and Co-Trustee, respectively,
         under and pursuant to a Trust Agreement, dated as of November 15,
         1987, with Ford Motor Credit Company as Trustor and Debtor relating
         to Industrial Development Lease Obligation Refunding Revenue Bonds,
         1988 Series A (TEP's Irvington Project). (Form 10-K for the year
         ended December 31, 1987, File No. 1-5924--Exhibit 10(j)(4).)

*10(c)(5)--Indenture of Trust, dated as of January 14, 1988, between the
         Pima County Authority and Morgan Guaranty authorizing Industrial
         Development Lease Obligation Refunding Revenue Bonds, 1988 Series A
         (Tucson Electric Power Company Irvington Project). (Form 10-K for
         the year ended December 31, 1987, File No. 1-5924--Exhibit
         10(j)(5).)

*10(c)(6)--Lease Amendment No. 1, dated as of May 1, 1989, between TEP,
         Wilmington Trust Company and William J. Wade as Owner Trustee and
         Co-trustee, respectively under a Trust Agreement dated as of
         November 15, 1987 with Ford Motor Credit Company. (Form 10-K for the
         year ended December 31, 1990, File No. 1-5924--Exhibit 10(i)(6).)

*10(c)(7)--Lease Supplement, dated as of January 1, 1991, between TEP,
         Wilmington Trust Company and William J. Wade as Owner Trustee and
         Co-Trustee, respectively, under a Trust Agreement dated as of
         November 15, 1987, with Ford. (Form 10K for the year ended December
         31, 1991, File No. 1-5924--Exhibit 10(i)(8).)

*10(c)(8)--Lease Supplement, dated as of March 1, 1991, between TEP,
         Wilmington Trust Company and William J. Wade as Owner Trustee and
         Co-Trustee, respectively, under a Trust Agreement dated as of
         November 15, 1987, with Ford. (Form 10-K for the year ended December
         31, 1991, File No. 1-5924--Exhibit 10(i)(9).)

*10(c)(9)--Lease Supplement No. 4, dated as of December 1, 1991, between
         TEP, Wilmington Trust Company and William J. Wade as Owner Trustee
         and Co-Trustee, respectively, under a Trust Agreement dated as of
         November 15, 1987, with Ford. (Form 10-K for the year ended December
         31, 1991, File No. 1-5924--Exhibit 10(i)(10).)

*10(c)(10)--Supplemental Indenture No. 1, dated as of December 1, 1991,
         between the Pima County Authority and Morgan Guaranty relating to
         Industrial Lease Development Obligation Revenue Project). (Form 10-K
         for the year ended December 31, 1991, File No. 1-5924--Exhibit
         10(I)(11).)

*10(c)(11)--Restructuring Commitment Agreement, dated as of June 30,
         1992, among TEP, as Lessee, Ford Motor Credit Company, as Owner
         Participant, Wilmington Trust Company and William J. Wade, as Owner
         Trustee and Co-Trustee, respectively, and Morgan Guaranty, as
         Indenture Trustee and Refunding Trustee, relating to the
         restructuring of the Registrant's lease of Unit 4 at the Irvington
         Generating Station. (Form S-4, Registration No. 33-52860--Exhibit
         10(i)(12).)

*10(c)(12)--Amendment No. 1, dated as of December 15, 1992, to Amended
         and Restated Participation Agreement, dated as of November 15, 1987,
         among TEP, as Lessee, Ford Motor Credit Company, as Owner
         Participant, Wilmington Trust Company and William J. Wade, as Owner
         Trustee and Co-Trustee, respectively, Financial Security Assurance
         Inc., as Surety, and Morgan Guaranty, as Indenture Trustee.  (Form
         S-1, Registration No. 33-55732--Exhibit 10(h)(12).)

*10(c)(13)--Amended and Restated Lease, dated as of December 15, 1992,
         between TEP, as Lessee and Wilmington Trust Company and William J.
         Wade, as Owner Trustee and Co-Trustee, respectively, as Lessor.
         (Form S-1, Registration No. 33-55732--Exhibit 10(h)(13).)

*10(c)(14)--Amended and Restated Tax Indemnity Agreement, dated as of
         December 15, 1992, between TEP, as Lessee, and Ford Motor Credit
         Company, as Owner Participant.  (Form S-1, Registration No. 33-
         55732--Exhibit 10(h)(14).)

*10(d)-- Power Sale Agreement for the years 1990 to 2011, dated as of March
         10, 1988, between TEP and Salt River Project Agricultural
         Improvement and Power District. (Form 10-K for the year ended
         December 31, 1987, File No. 1-5924--Exhibit 10(k).)

+*10(e)(1)--Employment Agreements between TEP and currently in effect
         with Ira R. Adler, Charles E. Bayless, Thomas A. Delawder, Gary L.
         Ellerd, Steven J. Glaser, Thomas N. Hansen, Karen G. Kissinger,
         Kevin P. Larson, George W. Miraben, Dennis R. Nelson, James S.
         Pignatelli and Romano Salvatori.  (Form 10-K for the year ended
         December 31, 1996, File No. 1-5924--Exhibit 10(g)(1).)

+*10(e)(2)--Employment Agreement between TEP and Romano Salvatori.  (Form
         10-K for the year ended December 31, 1996, File No. 1-5924--Exhibit
         10(g)(2).)

*10(e)(3)--Letter, dated February 25, 1992, from Dr. Martha R. Seger to
         TEP and Capital Holding Corporation. (Form S-4, Registration No. 33-
         52860--Exhibit 10(k)(4).)

+10(e)(4)--Amendment No. 1 to Employment Agreement among Romano Salvatori,
         TEP and Nations Energy Corporation.

+10(e)(5)--Amendment No. 1 to Amended and Restated Employment Agreement
         between TEP and currently in effect with Ira R. Adler, Charles E.
         Bayless, Thomas A. Delawder, Gary L. Ellerd, Steven J. Glaser,
         Thomas N. Hansen, Karen G. Kissinger, Kevin P. Larson, George W.
         Miraben, Dennis R. Nelson, James S. Pignatelli and Romano Salvatori.

*10(f)-- Power Sale Agreement, dated April 29, 1988, for the dates of May 16,
         1990 to December 31, 1995, between TEP and Nevada Power Company.
         (Form 10-K for the year ended December 31, 1988, File No 1-5924--
         Exhibit 10(m)(2).)

*10(g)-- Participation Agreement, dated as of June 30, 1992, among TEP, as
         Lessee, various parties thereto, as Owner Wilmington Trust Company
         and William J. Wade, as Owner Trustee and Co-Trustee, respectively,
         and LaSalle National Bank, as Indenture Trustee relating to TEP's
         lease of Springerville Unit 1.  (Form S-1, Registration No. 33-
         55732--Exhibit 10(u).)

*10(h)-- Lease Agreement, dated as of December 15, 1992, between TEP, as
         Lessee and Wilmington Trust Company and William J. Wade, as Owner
         Trustee and Co-Trustee, respectively, as Lessor.  (Form S-1,
         Registration No. 33-55732--Exhibit 10(v).)

*10(i)-- Tax Indemnity Agreements, dated as of December 15, 1992, between the
         various Owner Participants parties thereto and TEP, as Lessee.
         (Form S-1, Registration No. 33-55732, Exhibit 10(w).)

*10(j)-- Restructuring Agreement, dated as of December 1, 1992, between TEP
         and Century Power Corporation.  (Form S-1, Registration No. 33-
         55732--Exhibit 10(x).)

*10(k)-- Voting Agreement, dated as of December 15, 1992, between TEP and
         Chrysler Capital Corporation (documents relating to CILCORP Lease
         Management, Inc., MWR Capital Inc., US West Financial Services, Inc.
         and Philip Morris Capital Corporation are not filed but are
         substantially similar).  (Form S-1, Registration No. 33-55732--
         Exhibit 10(y).)

*10(l)(1)--Wholesale Power Supply Agreement between TEP and Navajo
         Tribal Utility Authority dated January 5, 1993.  (Form 10-K for the
         year ended December 31, 1992, File No. 1-5924--Exhibit 10(t).)

*10(l)(2)--Amended and Restated Wholesale Power Supply Agreement between
         TEP and Navajo Tribal Utility Authority, dated June 25, 1997.  (Form
         10-Q for the quarter ended June 30, 1997, File No. 1-5924--Exhibit
         10.)

10(m) -- Credit Agreement dated as of December 30, 1997, among TEP, Toronto
         Dominion (Texas), Inc., as Administrative Agent, The Bank of New
         York, as Syndication Agent, Societe Generale, as Documentation
         Agent, the lenders party hereto, and the issuing banks party hereto.

+*10(n)-- 1994 Omnibus Stock and Incentive Plan of UniSource Energy.  (Form S-
         8 dated January 6, 1998, File No. 333-43767.)

+*10(o)-- 1994 Outside Director Stock Option Plan of UniSource Energy.  (Form
         S-8 dated January 6, 1998, File No. 333-43765.)

+*10(p)-- Management and Directors Deferred Compensation Plan of UniSource
         Energy.  (Form S-8 dated January 6, 1998, File No. 333-43769.)

11    -- Statement re computation of per share earnings--UniSource Energy.

12    -- Computation of Ratio of Earnings to Fixed Charges--TEP.

21    -- Subsidiaries of the Registrants.

23    -- Consents of experts and counsel.

24    -- Power of Attorney.

27(a) -- Financial Data Schedule--UniSource Energy.

27(b) -- Financial Data Schedule--TEP.

(*)Previously filed as indicated and incorporated herein by reference.
(+)Management contracts or compensatory plans or arrangements required to be
  filed as exhibits to this Form 10-K by item 601(b)(10)(iii) of Regulation
  S-K.






                                UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C.  20549

                                 FORM 10-K/A
                                 (Mark One)
         [X]    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                     THE SECURITIES EXCHANGE ACT OF 1934
                 For the fiscal year ended December 31, 1997
                                     OR
         [  ]   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                     THE SECURITIES EXCHANGE ACT OF 1934
          For the transition period from __________ to __________.



Commission     Registrant; State of Incorporation;        IRS Employer
File Number    Address; and Telephone Number              Identification Number
- -----------    -----------------------------              ---------------------
1-13739        UNISOURCE ENERGY CORPORATION               86-0786732
               (An Arizona Corporation)
               220 West Sixth Street
               Tucson, AZ  85701
               (520) 571-4000

1-5924         TUCSON ELECTRIC POWER COMPANY              86-0062700
               (An Arizona Corporation)
               220 West Sixth Street
               Tucson, AZ  85701
               (520) 571-4000


    Securities registered pursuant to Section 12(b) of the Act:

                                                    Name of Each Exchange
Registrant           Title of Each Class            on Which Registered
- ----------           -------------------            -------------------
UniSource Energy    Common Stock, no par value      New York Stock Exchange
Corporation                                         Pacific Stock Exchange

Tucson Electric     First Mortgage Bonds
Power Company        8-1/8%Series due 2001          New York Stock Exchange
                     7.55% Series due 2002          New York Stock Exchange
                     7.65% Series due 2003          New York Stock Exchange

    Securities registered pursuant to Section 12(g) of the Act:  None

     Indicate by check mark whether each registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to
such filing requirements for the past 90 days.
Yes   X    No 
    -----     -----

     Indicate by check mark if disclosure of delinquent filers pursuant to
Item 405 of Regulation S-K is not contained herein, and will not be
contained, to the best of each registrant's knowledge, in definitive proxy or
information statements incorporated by reference in Part III of this Form 10-
K or any amendment to this Form 10-K. [ X ]


     The aggregate market value of UniSource Energy Corporation voting Common
Stock held by non-affiliates of the registrant was $542,330,842.50 based on
the last reported sale price thereof on the consolidated tape on February 24,
1998.

	  At February 24, 1998, 32,138,124 shares of UniSource Energy Corporation
Common Stock, no par value (the only class of Common Stock), were
outstanding.

     UniSource Energy Corporation is the sole holder of the 32,162,167 shares
of the outstanding Common Stock of Tucson Electric Power Company.

     Documents incorporated by reference: Specified portions of UniSource
Energy Corporation's Proxy Statement relating to the 1998 Annual Meeting of
Shareholders are incorporated by reference into PART III.



ITEM 9. -- CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE
- -------------------------------------------------------------------------------

      On November 7, 1997, based upon the recommendation of its audit
committee, the Board of Directors of TEP voted to appoint Price Waterhouse
LLP as TEP's independent accountants for the year ending December 31, 1998.
TEP chose not to renew the engagement of Deloitte & Touche LLP, TEP's present
independent accountants.  Deloitte & Touche LLP continued to serve for the
1997 fiscal year, including rendering an opinion on the financial statements
for the year ended December 31, 1997.

      The reports of Deloitte & Touche LLP on the Company's and TEP's
financial statements for each of the two most recent years ended December 31,
1997 did not contain any adverse opinion or disclaimer of opinion, nor were
the reports qualified in any manner.

      During 1996, 1997 and the period from December 31, 1997 to March 2, 1998,
the date of the Form 10-K, there were no disagreements with Deloitte & Touche
LLP on any matter of accounting principle or practice, financial statement
disclosure or auditing scope or procedure.  During this period, there were no
"reportable events" as that term is defined in Item 304 (a) (1) (v) of
Regulation S-K.

      The Company and TEP requested Deloitte & Touche LLP to furnish a
letter addressed to the Securities and Exchange Commission stating whether
it agrees with the above statements for the two most recent years ended
December 31, 1997 to March 2, 1998, the date of the Form 10-K.  A copy of such
letter, dated March 2, 1998, is filed as Exhibit 16 to this Form 10-K/A.

      On November 14, 1997, TEP (and the Company) engaged Price Waterhouse
LLP as its principal accountants to audit the financial statements for the
year ending December 31, 1998.  During 1996, 1997 and the period from
December 31, 1997 to March 2, 1998, the date of the Form 10-K, the Company and
TEP have not consulted Price Waterhouse LLP on items which concerned the
application of accounting principles generally, or to a specific transaction or
group of transactions, either completed or proposed, or the type of audit
opinion that might be rendered on the financial statements except as related to
transactions for the year ending December 31, 1998.




                                    PART IV

ITEM 14. -- EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K
- -------------------------------------------------------------------------------

                                                                Page
                                                                ----
(a)   1.    Consolidated Financial Statements as of
            December 31, 1997 and 1996 and for Each
               of the Three Years in the Period Ended
               December 31, 1997.

            UniSource Energy Corporation
            ----------------------------
            Independent Auditors' Report                         37
            Consolidated Statements of Income                    38
            Consolidated Statements of Cash Flows                39
            Consolidated Balance Sheets                          40
            Consolidated Statements of Capitalization            41
            Consolidated Statements of Changes in Stockholders'
              Equity (Deficit)                                   42
            Notes to Consolidated Financial Statements           48
 
            Tucson Electric Power Company
            -----------------------------
            Independent Auditors' Report                         37
            Consolidated Statements of Income                    43
            Consolidated Statements of Cash Flows                44
            Consolidated Balance Sheets                          45
            Consolidated Statements of Capitalization            46
            Consolidated Statements of Changes in Stockholders'
             Equity (Deficit)                                    47
            Notes to Consolidated Financial Statements           48

      2.    Supplemental Consolidated Schedules for the Years
            Ended December 31, 1995 to 1997.


      Schedules I to V, inclusive, are omitted because they are not
       applicable or not required.

      3.    Exhibits.

      Reference is made to the Exhibit Index commencing on page  81

(b)     Reports on Form 8-K and 8-K/A.

      Tucson Electric Power Company
      ------------------------------

      -- Form 8-K dated November 7, 1997 (filed November 14, 1997), reporting
   on Change in the Registrant's Certifying Accountant.
      -- Form 8-K/A dated November 7, 1997 (filed November 19, 1997),
   reporting on Change in the Registrant's Certifying Accountant.
      -- Form 8-K dated November 14, 1997 (filed November 17, 1997),
   reporting on Change in the Registrant's Certifying Accountant.
      -- Form 8-K dated November 19, 1997 (filed November 24, 1997),
   reporting on the Company's Holding Company Application and Financing
   Application.

      UniSource Energy Corporation and Tucson Electric Power Company
      --------------------------------------------------------------

      -- Form 8-K dated December 30, 1997 (filed January 6, 1997), reporting
   on the UniSource Energy/TEP share exchange and the new TEP Bank Credit
   Agreement.



                                   SIGNATURES
                                   ----------

      Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed
on its behalf by the undersigned thereunto duly authorized.

                                           UNISOURCE ENERGY CORPORATION


Date: March 5, 1998                 By   Ira R. Adler
                                       ------------------------------------
                                         IRA R. ADLER
                                         Senior Vice President and Principal
                                         Financial Officer


 
                                         TUCSON ELECTRIC POWER COMPANY


Date:  March 5, 1998                By   Ira R. Adler            
                                       --------------------------------------
                                         IRA R. ADLER
                                         Senior Vice President and Principal
                                         Financial Officer


                                  EXHIBIT INDEX

2(a)  -- Agreement and Plan of Exchange, dated as of March 20, 1995, between
         TEP, UniSource Energy and NCR Holding, Inc.

*3(a) -- Restated Articles of Incorporation of TEP, filed with the ACC on
         August 11, 1994, as amended by Amendment to Article Fourth of the
         Company's Restated Articles of Incorporation, filed with the ACC on
         May 17, 1996.  (Form 10-K for year ended December 31, 1996, File No.
         1-5924--Exhibit 3(a).)

*3(b) -- Bylaws of TEP, as amended May 20, 1994.  (Form 10-Q for the quarter
         ended June 30, 1994, File No. 1-5924--Exhibit 3.)

*3(c) -- Amended and Restated Articles of Incorporation of UniSource Energy.
         (Form 8-A/A, dated January 30, 1998, File No. 1-13739--Exhibit
         2(a).)

*3(d) -- Bylaws of UniSource Energy, as amended December 11, 1997.  (Form 8-
         A, dated December 23, 1997, File No. 1-13739--Exhibit 2(b).)

*4(a)(1)-- Indenture dated as of April 1, 1941, to The Chase National Bank of
         the City of New York, as Trustee.  (Form S-7, File No. 2-59906--
         Exhibit 2(b)(1).)

*4(a)(2)-- First Supplemental Indenture, dated as of October 1, 1946.  (Form
         S-7, File No. 2-59906--Exhibit 2(b)(2).)

*4(a)(3)-- Second Supplemental Indenture dated as of October 1, 1947.  (Form
         S-7, File No. 2-59906--Exhibit 2(b)(3).)

*4(a)(4)-- Third Supplemental Indenture, dated as of April 1, 1949.  (Form S-
         7, File No. 2-59906--Exhibit 2(b)(4).)

*4(a)(5)-- Fourth Supplemental Indenture, dated as of December 1, 1952.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(5).)

*4(a)(6)-- Fifth Supplemental Indenture, dated as of January 1, 1955.  (Form
         S-7, File No. 2-59906--Exhibit 2(b)(6).)

*4(a)(7)-- Sixth Supplemental Indenture, dated as of January 1, 1958.  (Form
         S-7, File No. 2-59906--Exhibit 2(b)(7).)

*4(a)(8)-- Seventh Supplemental Indenture, dated as of November 1, 1959.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(8).)

*4(a)(9)-- Eighth Supplemental Indenture, dated as of November 1, 1961.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(9).)

*4(a)(10)-- Ninth Supplemental Indenture, dated as of February 20, 1964.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(10).)

*4(a)(11)-- Tenth Supplemental Indenture, dated as of February 1, 1965.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(11).)

*4(a)(12)-- Eleventh Supplemental Indenture, dated as of February 1,
         1966.  (Form S-7, File No. 2-59906--Exhibit 2(b)(12).)

*4(a)(13)-- Twelfth Supplemental Indenture, dated as of November 1, 1969.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(13).)

*4(a)(14)-- Thirteenth Supplemental Indenture, dated as of January 20,
         1970.  (Form S-7, File No. 2-59906--Exhibit 2(b)(14).)

*4(a)(15)-- Fourteenth Supplemental Indenture, dated as of September 1,
         1971.  (Form S-7, File No. 2-59906--Exhibit 2(b)(15).)

*4(a)(16)-- Fifteenth Supplemental Indenture, dated as of March 1, 1972.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(16).)

*4(a)(17)-- Sixteenth Supplemental Indenture, dated as of May 1, 1973.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(17).)

*4(a)(18)-- Seventeenth Supplemental Indenture, dated as of November 1,
         1975.  (Form S-7, File No. 2-59906--Exhibit 2(b)(18).)

*4(a)(19)-- Eighteenth Supplemental Indenture, dated as of November 1,
         1975.  (Form S-7, File No. 2-59906--Exhibit 2(b)(19).)

*4(a)(20)-- Nineteenth Supplemental Indenture, dated as of July 1, 1976.
         (Form S-7, File No. 2-59906--Exhibit 2(b)(20).)

*4(a)(21)-- Twentieth Supplemental Indenture, dated as of October 1,
         1977.  (Form S-7, File No. 2-59906--Exhibit 2(b)(21).)

*4(a)(22)-- Twenty-first Supplemental Indenture, dated as of November 1,
         1977.  (Form 10-K for year ended December 31, 1980, File No. 1-5924-
         -Exhibit 4(v).)

*4(a)(23)-- Twenty-second Supplemental Indenture, dated as of January 1,
         1978.  (Form 10-K for year ended December 31, 1980, File No. 1-5924-
         -Exhibit 4(w).)

*4(a)(24)-- Twenty-third Supplemental Indenture, dated as of July 1,
         1980.  (Form 10-K for year ended December 31, 1980, File No. 1-5924-
         -Exhibit 4(x).)

*4(a)(25)-- Twenty-fourth Supplemental Indenture, dated as of October 1,
         1980.  (Form 10-K for year ended December 31, 1980, File No. 1-5924-
         -Exhibit 4(y).)

*4(a)(26)-- Twenty-fifth Supplemental Indenture, dated as of April 1,
         1981.  (Form 10-Q for quarter ended March 31, 1981, File No. 1-5924-
         -Exhibit 4(a).)

*4(a)(27)-- Twenty-sixth Supplemental Indenture, dated as of April 1,
         1981.  (Form 10-Q for quarter ended March 31, 1981, File No. 1-5924-
         -Exhibit 4(b).)

*4(a)(28)-- Twenty-seventh Supplemental Indenture, dated as of October 1,
         1981.  (Form 10-Q for quarter ended September 30, 1982, File No. 1-
         5924--Exhibit 4(c).)

*4(a)(29)-- Twenty-eighth Supplemental Indenture, dated as of June 1,
         1990.  (Form 10-Q for quarter ended June 30, 1990, File No. 1-5924--
         Exhibit 4(a)(1).)

*4(a)(30)-- Twenty-ninth Supplemental Indenture, dated as of December 1,
         1992.  (Form S-1, Registration No. 33-55732--Exhibit 4(a)(30).)

*4(a)(31)-- Thirtieth Supplemental Indenture, dated as of December 1,
         1992.  (Form S-1, Registration No. 33-55732--Exhibit 4(a)(31).)

*4(a)(32)-- Thirty-first Supplemental Indenture, dated as of May 1, 1996.
         (Form 10-K for the year ended December 31, 1996, File No. 1-5924--
         Exhibit 4(a)(32).)

*4(a)(33)-- Thirty-second Supplemental Indenture, dated as of May 1,
         1996.  (Form 10-K for the year ended December 31, 1996, File No. 1-
         5924--Exhibit 4(a)(33).)

*4(b)(1)-- Installment Sale Agreement, dated as of December 1, 1973, among
         the City of Farmington, New Mexico, Public Service Company of New
         Mexico and TEP. (Form 8-K for the month of January 1974, File No. 0-
         269--Exhibit 3.)

*4(b)(2)-- Ordinance No. 486, adopted December 17, 1973, of the City of
         Farmington, New Mexico. (Form 8-K for the month of January 1974,
         File No. 0-269--Exhibit 4.)

*4(b)(3)-- Amended and Restated Installment Sale Agreement dated as of April
         1, 1997, between the City of Farmington, New Mexico and TEP relating
         to Pollution Control Revenue Bonds, 1997 Series A (Tucson Electric
         Power Company San Juan Project).  (Form 10-Q for the quarter ended
         March 31, 1997, File No. 1-5924--Exhibit 4(a).)

*4(b)(4)-- City of Farmington, New Mexico Ordinance No. 97-1055, adopted
         April 17, 1997, authorizing Pollution Control Revenue Bonds, 1997
         Series A (Tucson Electric Power Company San Juan Project).  (Form
         10-Q for the quarter ended March 31, 1997, File No. 1-5924--Exhibit
         4(b).)

*4(c)(1)-- Loan Agreement, dated as of September 15, 1981, between the
         Industrial Development Authority of the County of Apache, Arizona
         and TEP, relating to Floating Rate Monthly Demand Pollution Control
         Revenue Bonds, 1981 Series A (Tucson Electric Power Company
         Project).  (Form 10-K for year ended December 31, 1981, File No. 1-
         5924--Exhibit 4(d)(1).)

*4(c)(2)-- Indenture of Trust, dated as of September 15, 1981, between the
         Apache County Authority and Morgan Guaranty Trust Company of New
         York, authorizing Floating Rate Monthly Demand Pollution Control
         Revenue Bonds, 1981 Series A (Tucson Electric Power Company
         Project).  (Form 10-K for year ended December 31, 1981, File No. 1-
         5924--Exhibit 4(d)(2).)

*4(d)(1)-- Second Supplemental Loan Agreement, dated as of October 1, 1981,
         between the Apache County Authority and TEP, relating to Floating
         Rate Monthly Demand Pollution Control Revenue Bonds, 1981 Series B
         (Tucson Electric Power Company Project).  (Form 10-K for year ended
         December 31, 1982, File No. 1-5924--Exhibit 4(f)(1).)

*4(d)(2) -- Second Supplemental Indenture, dated as of October 1, 1981, between
         the Apache County Authority and Morgan Guaranty, relating to Floating
         Rate Monthly Demand Pollution Control Revenue Bonds, 1981 Series B
         (Tucson Electric Power Company Project).  (Form 10-K for year ended
         December 31, 1982, File No. 1-5924--Exhibit 4(f)(2).)

*4(d)(3) -- Third Supplemental Loan Agreement, dated as of
         December 1, 1985, between the Apache County Authority and TEP,
         relating to Floating Rate Monthly Demand Pollution Control Revenue
         Bonds, 1981 Series B (Tucson Electric Power Company Project).  (Form
         10-K for the year ended December 31, 1987, File No. 1-5924--Exhibit
         4(d)(3).)

*4(d)(4)-- Third Supplemental Indenture, dated as of December 1, 1985,
         between the Apache County Authority and Morgan Guaranty, relating to
         Floating Rate Monthly Demand Pollution Control Revenue Bonds, 1981
         Series B (Tucson Electric Power Company Project).  (Form 10-K for
         the year ended December 31, 1987, File No. 1-5924--Exhibit 4(d)(4).)

*4(d)(5)-- Fourth Supplemental Indenture of Trust, dated as of March 31,
         1992, between the Apache County Authority and Morgan Guaranty,
         relating to Pollution Control Revenue Bonds, 1981 Series B (Tucson
         Electric Power Company Project). (Form S-4, Registration No. 33-
         52860--Exhibit 4(d)(5).)

*4(d)(6)-- Fourth Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Apache County Authority and TEP, relating to Pollution
         Control Revenue Bonds, 1981 Series B (Tucson Electric Power Company
         Project). (Form S-4, Registration No. 33-52860--Exhibit 4(d)(6).)

*4(e)(1)-- Loan Agreement, dated as of October 1, 1982, between the Pima
         County Authority and TEP relating to Floating Rate Monthly Demand
         Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric
         Power Company Irvington Project). (Form 10-Q for quarter ended
         September 30, 1982, File No. 1-5924--Exhibit 4(a).)

*4(e)(2)-- Indenture of Trust, dated as of October 1, 1982, between the Pima
         County Authority and Morgan Guaranty authorizing Floating Rate
         Monthly Demand Industrial Development Revenue Bonds, 1982 Series A
         (Tucson Electric Power Company Irvington Project). (Form 10-Q for
         quarter ended September 30, 1982, File No. 1-5924--Exhibit 4(b).)

*4(e)(3)-- First Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Pima County Authority and TEP relating to Industrial
         Development Revenue Bonds, 1982 Series A (Tucson Electric Power
         Company Irvington Project).  (Form S-4, Registration No. 33-52860--
         Exhibit 4(h)(3).)

*4(e)(4)-- First Supplemental Indenture of Trust, dated as of March 31, 1992,
         between the Pima County Authority and Morgan Guaranty relating to
         Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric
         Power Company Irvington Project). (Form S-4, Registration No. 33-
         52860--Exhibit 4(h)(4).)

*4(f)(1)-- Loan Agreement, dated as of December 1, 1982, between the Pima
         County Authority and TEP relating to Floating Rate Monthly Demand
         Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric
         Power Company Projects). (Form 10-K for year ended December 31,
         1982, File No. 1-5924--Exhibit 4(k)(1).)

*4(f)(2)-- Indenture of Trust, dated as of December 1, 1982, between the Pima
         County Authority and Morgan Guaranty authorizing Floating Rate
         Monthly Demand Industrial Development Revenue Bonds, 1982 Series A
         (Tucson Electric Power Company Projects). (Form 10-K for year ended
         December 31, 1982, File No. 1-5924--Exhibit 4(k)(2).)

*4(f)(3)-- First Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Pima County Authority and TEP relating to Industrial
         Development Revenue Bonds, 1982 Series A (Tucson Electric Power
         Company Projects). (Form S-4, Registration No. 33-52860--Exhibit
         4(i)(3).)

*4(f)(4)-- First Supplemental Indenture of Trust, dated as of March 31, 1992,
         between the Pima County Authority and Morgan Guaranty relating to
         Industrial Development Revenue Bonds, 1982 Series A (Tucson Electric
         Power Company Projects). (Form S-4, Registration No. 33-52860--
         Exhibit 4(i)(4).)

*4(g)(1)-- Loan Agreement, dated as of December 1, 1983, between the Apache
         County Authority and TEP relating to Floating Rate Monthly Demand
         Industrial Development Revenue Bonds, 1983 Series A (Tucson Electric
         Power Company Springerville Project). (Form 10-K for year ended
         December 31, 1983, File No. 1-5924--Exhibit 4(l)(1).)

*4(g)(2)-- Indenture of Trust, dated as of December 1, 1983, between the
         Apache County Authority and Morgan Guaranty authorizing Floating
         Rate Monthly Demand Industrial Development Revenue Bonds, 1983
         Series A (Tucson Electric Power Company Springerville Project).
         (Form 10-K for year ended December 31, 1983, File No. 1-5924--
         Exhibit 4(l)(2).)

*4(g)(3)-- First Supplemental Loan Agreement, dated as of December 1, 1985,
         between the Apache County Authority and TEP relating to Floating
         Rate Monthly Demand Industrial Development Revenue Bonds, 1983
         Series A (Tucson Electric Power Company Springerville Project).
         (Form 10-K for the year ended December 31, 1987, File No. 1-5924--
         Exhibit 4(k)(3).)

*4(g)(4)-- First Supplemental Indenture, dated as of December 1, 1985,
         between the Apache County Authority and Morgan Guaranty relating to
         Floating Rate Monthly Demand Industrial Development Revenue Bonds,
         1983 Series A (Tucson Electric Power Company Springerville Project).
         (Form 10-K for the year ended December 31, 1987, File No. 1-5924--
         Exhibit 4(k)(4).)

*4(g)(5)-- Second Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Apache County Authority and TEP relating to Industrial
         Development Revenue Bonds, 1983 Series A (Tucson Electric Power
         Company Springerville Project).  (Form S-4, Registration No. 33-
         52860--Exhibit 4(k)(5).)

*4(g)(6)-- Second Supplemental Indenture of Trust, dated as of March 31,
         1992, between the Apache County Authority and Morgan Guaranty
         relating to Industrial Development Revenue Bonds, 1983 Series A
         (Tucson Electric Power Company Springerville Project).  (Form S-4,
         Registration No. 33-52860--Exhibit 4(k)(6).)

*4(h)(1)-- Loan Agreement, dated as of December 1, 1983, between the Apache
         County Authority and TEP relating to Variable Rate Demand Industrial
         Development Revenue Bonds, 1983 Series B (Tucson Electric Power
         Company Springerville Project). (Form 10-K for year ended December
         31, 1983, File No. 1-5924--Exhibit 4(m)(1).)

*4(h)(2)-- Indenture of Trust, dated as of December 1, 1983, between the
         Apache County Authority and Morgan Guaranty authorizing Variable
         Rate Demand Industrial Development Revenue Bonds, 1983 Series B
         (Tucson Electric Power Company Springerville Project). (Form 10-K
         for year ended December 31, 1983, File No. 1-5924--Exhibit 4(m)(2).)

*4(h)(3)-- First Supplemental Loan Agreement, dated as of December 1, 1985,
         between the Apache County Authority and TEP relating to Floating
         Rate Monthly Demand Industrial Development Revenue Bonds, 1983
         Series B (Tucson Electric Power Company Springerville Project).
         (Form 10-K for the year ended December 31, 1987, File No. 1-5924--
         Exhibit 4(l)(3).)

*4(h)(4)-- First Supplemental Indenture, dated as of December 1, 1985,
         between the Apache County Authority and Morgan Guaranty relating to
         Floating Rate Monthly Demand Industrial Development Revenue Bonds,
         1983 Series B (Tucson Electric Power Company Springerville Project).
         (Form 10-K for the year ended December 31, 1987, File No. 1-5924--
         Exhibit 4(l)(4).)

*4(h)(5)-- Second Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Apache County Authority and TEP relating to Industrial
         Development Revenue Bonds, 1983 Series B (Tucson Electric Power
         Company Springerville Project).  (Form S-4, Registration No. 33-
         52860--Exhibit 4(l)(5).)

*4(h)(6)-- Second Supplemental Indenture of Trust, dated as of March 31,
         1992, between the Apache County Authority and Morgan Guaranty
         relating to Industrial Development Revenue Bonds, 1983 Series B
         (Tucson Electric Power Company Springerville Project).  (Form S-4,
         Registration No. 33-52860--Exhibit 4(l)(6).)

*4(i)(1)-- Loan Agreement, dated as of December 1, 1983, between the Apache
         County Authority and TEP relating to Variable Rate Demand Industrial
         Development Revenue Bonds, 1983 Series C (Tucson Electric Power
         Company Springerville Project). (Form 10-K for year ended December
         31, 1983, File No. 1-5924--Exhibit 4(n)(1).)

*4(i)(2)-- Indenture of Trust, dated as of December 1, 1983, between the
         Apache County Authority and Morgan Guaranty authorizing Variable
         Rate Demand Industrial Development Revenue Bonds, 1983 Series C
         (Tucson Electric Power Company Springerville Project).  (Form 10-K
         for year ended December 31, 1983, File No. 1-5924--Exhibit 4(n)(2).)

*4(i)(3)-- First Supplemental Loan Agreement, dated as of December 1, 1985,
         between the Apache County Authority and TEP relating to Floating
         Rate Monthly Demand Industrial Development Revenue Bonds, 1983
         Series C (Tucson Electric Power Company Springerville Project).
         (Form 10-K for the year ended December 31, 1987, File No. 1-5924--
         Exhibit 4(m)(3).)

*4(i)(4)-- First Supplemental Indenture, dated as of December 1, 1985,
         between the Apache County Authority and Morgan Guaranty relating to
         Floating Rate Monthly Demand Industrial Development Revenue Bonds,
         1983 Series C (Tucson Electric Power Company Springerville Project).
         (Form 10-K for the year ended December 31, 1987, File No. 1-5924--
         Exhibit 4(m)(4).)

*4(i)(5)-- Second Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Apache County Authority and TEP relating to Industrial
         Development Revenue Bonds, 1983 Series C (Tucson Electric Power
         Company Springerville Project).  (Form S-4, Registration No. 33-
         52860--Exhibit 4(m)(5).)

*4(i)(6)-- Second Supplemental Indenture of Trust, dated as of March 31,
         1992, between the Apache County Authority and Morgan Guaranty
         relating to Industrial Development Revenue Bonds, 1983 Series C
         (Tucson Electric Power Company Springerville Project).  (Form S-4,
         Registration No. 33-52860--Exhibit 4(m)(6).)

*4(j) -- Reimbursement Agreement, dated as of September 15, 1981, as amended,
         between TEP and Manufacturers Hanover Trust Company. (Form 10-K for
         the year ended December 31, 1984, File No. 1-5924--Exhibit 4(o)(4).)

*4(k)(1)-- Loan Agreement, dated as of December 1, 1985, between the Apache
         County Authority and TEP relating to Variable Rate Demand Industrial
         Development Revenue Bonds, 1985 Series A (Tucson Electric Power
         Company Springerville Project). (Form 10-K for the year ended
         December 31, 1985, File No. 1-5924---Exhibit 4(r)(1).)

*4(k)(2)-- Indenture of Trust, dated as of December 1, 1985, between the
         Apache County Authority and Morgan Guaranty authorizing Variable
         Rate Demand Industrial Development Revenue Bonds, 1985 Series A
         (Tucson Electric Power Company Springerville Project). (Form 10-K
         for the year ended December 31, 1985, File No. 1-5924--Exhibit
         4(r)(2).)

*4(k)(3)-- First Supplemental Loan Agreement, dated as of March 31, 1992,
         between the Apache County Authority and TEP relating to Industrial
         Development Revenue Bonds, 1985 Series A (Tucson Electric Power
         Company Springerville Project).  (Form S-4, Registration No. 33-
         52860--Exhibit 4(o)(3).)

*4(k)(4)-- First Supplemental Indenture of Trust, dated as of March 31, 1992,
         between the Apache County Authority and Morgan Guaranty relating to
         Industrial Development Revenue Bonds, 1985 Series A (Tucson Electric
         Power Company Springerville Project).  (Form S-4, Registration No.
         33-52860--Exhibit 4(o)(4).)

*4(l) -- Warrant Agreement and Form of Warrant, dated as of December 15,
         1992.  (Form S-1, Registration No. 33-55732--Exhibit 4(q).)

*4(m)(1)-- Indenture of Mortgage and Deed of Trust dated as of December 1,
         1992, to Bank of Montreal Trust Company, Trustee.  (Form S-1,
         Registration No. 33-55732--Exhibit 4(r)(1).)

*4(m)(2)-- Supplemental Indenture No. 1 creating a series of bonds designated
         Second Mortgage Bonds, Collateral Series A, dated as of December 1,
         1992.  (Form S-1, Registration No. 33-55732-Exhibit 4(r)(2).)

4(m)(3)--Supplemental Indenture No. 2 creating a series of bonds designated
         Second Mortgage Bonds, Collateral Series B, dated as of December 1,
         1997.

*4(n)(1)-- Loan Agreement, dated as of April 1, 1997, between Coconino
         County, Arizona Pollution Control Corporation and TEP relating to
         Pollution Control Revenue Bonds, 1997 Series A (Tucson Electric
         Power Company Navajo Project).  (Form 10-Q for the quarter ended
         March 31, 1997, File No. 1-5924--Exhibit 4(c).)

*4(n)(2)-- Indenture of Trust, dated as of April 1, 1997, between Coconino
         County, Arizona Pollution Control Corporation and First Trust of New
         York, National Association, authorizing Pollution Control Revenue
         Bonds, 1997 Series A  (Tucson Electric Power Company Navajo
         Project).  (Form 10-Q for the quarter ended March 31, 1997, File No.
         1-5924--Exhibit 4(d).)

*4(o)(1)-- Loan Agreement, dated as of April 1, 1997, between Coconino
         County, Arizona Pollution Control Corporation and TEP relating to
         Pollution Control Revenue Bonds, 1997 Series B (Tucson Electric
         Power Company Navajo Project).  (Form 10-Q for the quarter ended
         March 31, 1997, File No. 1-5924--Exhibit 4(e).)

*4(o)(2)-- Indenture of Trust, dated as of April 1, 1997, between Coconino
         County, Arizona Pollution Control Corporation and First Trust of New
         York, National Association, authorizing Pollution Control Revenue
         Bonds, 1997 Series B  (Tucson Electric Power Company Navajo
         Project). (Form 10-Q for the quarter ended March 31, 1997, File No.
         1-5924--Exhibit 4(f).)

*4(p)(1)-- Loan Agreement, dated as of September 15, 1997, between The
         Industrial Development Authority of the County of Pima and TEP
         relating to Industrial Development Revenue Bonds, 1997 Series A
         (Tucson Electric Power Company Project).  (Form 10-Q for the quarter
         ended September 30, 1997, File No. 1-5924--Exhibit 4(a).)

*4(p)(2)-- Indenture of Trust, dated as of September 15, 1997, between The
         Industrial Development Authority of the County of Pima and First
         Trust of New York, National Association, authorizing Industrial
         Development Revenue Bonds, 1997 Series A (Tucson Electric Power
         Company Project).  (Form 10-Q for the quarter ended September 30,
         1997, File No. 1-5924--Exhibit 4(b).)

*4(q)(1)-- Loan Agreement, dated as of September 15, 1997, between The
         Industrial Development Authority of the County of Pima and TEP
         relating to Industrial Development Revenue Bonds, 1997 Series B
         (Tucson Electric Power Company Project).  (Form 10-Q for the quarter
         ended September 30, 1997, File No. 1-5924--Exhibit 4(c).)

*4(q)(2)-- Indenture of Trust, dated as of September 15, 1997, between The
         Industrial Development Authority of the County of Pima and First
         Trust of New York, National Association, authorizing Industrial
         Development Revenue Bonds, 1997 Series B (Tucson Electric Power
         Company Project).  (Form 10-Q for the quarter ended September 30,
         1997, File No. 1-5924--Exhibit 4(d).)

*4(r)(1)-- Loan Agreement, dated as of September 15, 1997, between The
         Industrial Development Authority of the County of Pima and TEP
         relating to Industrial Development Revenue Bonds, 1997 Series C
         (Tucson Electric Power Company Project).  (Form 10-Q for the quarter
         ended September 30, 1997, File No. 1-5924--Exhibit 4(e).)

*4(r)(2)-- Indenture of Trust, dated as of September 15, 1997, between The
         Industrial Development Authority of the County of Pima and First
         Trust of New York, National Association, authorizing Industrial
         Development Revenue Bonds, 1997 Series C (Tucson Electric Power
         Company Project).  (Form 10-Q for the quarter ended September 30,
         1997, File No. 1-5924--Exhibit 4(f).)

*10(a)(1)--Lease Agreements, dated as of December 1, 1984, between
         Valencia and United States Trust Company of New York, as Trustee,
         and Thomas B. Zakrzewski, as Co-Trustee, as amended and
         supplemented. (Form 10-K for the year ended December 31, 1984, File
         No. 1-5924--Exhibit 10(d)(1).)

*10(a)(2)--Guaranty and Agreements, dated as of December 1, 1984,
         between TEP and United States Trust Company of New York, as Trustee,
         and Thomas B. Zakrzewski, as Co-Trustee. (Form 10-K for the year
         ended December 31, 1984, File No. 1-5924--Exhibit 10(d)(2).)

*10(a)(3)--General Indemnity Agreements, dated as of December 1, 1984,
         between Valencia and TEP, as Indemnitors; General Foods Credit
         Corporation, Harvey Hubbell Financial, Inc. and J. C. Penney
         Company, Inc. as Owner Participants; United States Trust Company of
         New York, as Owner Trustee; Teachers Insurance and Annuity
         Association of America as Loan Participant; and Marine Midland Bank,
         N.A., as Indenture Trustee. (Form 10-K for the year ended December
         31, 1984, File No. 1-5924--Exhibit 10(d)(3).)

*10(a)(4)--Tax Indemnity Agreements, dated as of December 1, 1984,
         between General Foods Credit Corporation, Harvey Hubbell Financial,
         Inc. and J. C. Penney Company, Inc., each as Beneficiary under a
         separate Trust Agreement dated December 1, 1984, with United States
         Trust of New York as Owner Trustee, and Thomas B. Zakrzewski as Co-
         Trustee, Lessor, and Valencia, Lessee, and TEP, Indemnitors. (Form
         10-K for the year ended December 31, 1984, File No. 1-5924--Exhibit
         10(d)(4).)

*10(a)(5)--Amendment No. 1, dated December 31, 1984, to the Lease
         Agreements, dated December 1, 1984, between Valencia and United
         States Trust Company of New York, as Owner Trustee, and Thomas B.
         Zakrzewski as Co-Trustee. (Form 10-K for the year ended December 31,
         1986, File No. 1-5924--Exhibit 10(e)(5).)

*10(a)(6)--Amendment No. 2, dated April 1, 1985, to the Lease
         Agreements, dated December 1, 1984, between Valencia and United
         States Trust Company of New York, as Owner Trustee, and Thomas B.
         Zakrzewski as Co-Trustee. (Form 10-K for the year ended December 31,
         1986, File No. 1-5924--Exhibit 10(e)(6).)

*10(a)(7)--Amendment No. 3, dated August 1, 1985, to the Lease
         Agreements, dated December 1, 1984, between Valencia and United
         States Trust Company of New York, as Owner Trustee, and Thomas
         Zakrzewski as Co-Trustee.  (Form 10-K for the year ended December
         31, 1986, File No. 1-5924--Exhibit 10(e)(7).)

*10(a)(8)--Amendment No. 4, dated June 1, 1986, to the Lease Agreement,
         dated December 1, 1984, between Valencia and United States Trust
         Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-
         Trustee, under a Trust Agreement dated as of December 1, 1984, with
         General Foods Credit Corporation as Owner Participant. (Form 10-K
         for the year ended December 31, 1986, File No. 1-5924--Exhibit
         10(e)(8).)

*10(a)(9)--Amendment No. 4, dated June 1, 1986, to the Lease Agreement,
         dated December 1, 1984, between Valencia and United States Trust
         Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-
         Trustee, under a Trust Agreement dated as of December 1, 1984, with
         J. C. Penney Company, Inc. as Owner Participant. (Form 10-K for the
         year ended December 31, 1986, File No. 1-5924--Exhibit 10(e)(9).)

*10(a)(10)--Amendment No. 4, dated June 1, 1986, to the Lease Agreement,
         dated December 1, 1984, between Valencia and United States Trust
         Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-
         Trustee, under a Trust Agreement dated as of December 1, 1984, with
         Harvey Hubbell Financial Inc. as Owner Participant. (Form 10-K for
         the year ended December 31, 1986, File No. 1-5924--Exhibit
         10(e)(10).)

*10(a)(11)--Lease Amendment No. 5 and Supplement No. 2, to the Lease
         Agreement, dated July 1, 1986, between Valencia, United States Trust
         Company of New York as Owner Trustee, and Thomas Zakrzewski as Co-
         Trustee and J. C. Penney as Owner Participant. (Form 10-K for the
         year ended December 31, 1986, File No. 1-5924--Exhibit 10(e)(11).)

*10(a)(12)--Lease Amendment No. 5, to the Lease Agreement, dated June 1,
         1987, between Valencia, United States Trust Company of New York as
         Owner Trustee, and Thomas Zakrzewski as Co-Trustee and General Foods
         Credit Corporation as Owner Participant.  (Form 10-K for the year
         ended December 31, 1988, File No. 1-5924--Exhibit 10(f)(12).)

*10(a)(13)--Lease Amendment No. 5, to the Lease Agreement, dated June 1,
         1987, between Valencia, United States Trust Company of New York as
         Owner Trustee, and Thomas Zakrzewski as Co-Trustee and Harvey
         Hubbell Financial Inc. as Owner Participant. (Form 10-K for the year
         ended December 31, 1988, File No. 1-5924--Exhibit 10(f)(13).)

*10(a)(14)--Lease Amendment No. 6, to the Lease Agreement, dated June 1,
         1987, between Valencia, United States Trust Company of New York as
         Owner Trustee, and Thomas Zakrzewski as Co-Trustee and J. C. Penney
         Company, Inc. as Owner Participant. (Form 10-K for the year ended
         December 31, 1988, File No. 1-5924--Exhibit 10(f)(14).)

*10(a)(15)--Lease Supplement No. 1, dated December 31, 1984, to Lease
         Agreements, dated December 1, 1984, between Valencia, as Lessee and
         United States Trust Company of New York and Thomas B. Zakrzewski, as
         Owner Trustee and Co-Trustee, respectively (document filed relates
         to General Foods Credit Corporation; documents relating to Harvey
         Hubbel Financial, Inc. and JC Penney Company, Inc. are not filed but
         are substantially similar). (Form S-4, Registration No. 33-52860--
         Exhibit 10(f)(15).)

*10(a)(16)--Amendment No. 1, dated June 1, 1986, to the General Indemnity
         Agreement, dated as of December 1, 1984, between Valencia and TEP,
         as Indemnitors, General Foods Credit Corporation, as Owner
         Participant, United States Trust Company of New York, as Owner
         Trustee, Teachers Insurance and Annuity Association of America, as
         Loan Participant, and Marine Midland Bank, N.A., as Indenture
         Trustee. (Form 10-K for the year ended December 31, 1986, File No.
         1-5924--Exhibit 10(e)(12).)

*10(a)(17)--Amendment No. 1, dated June 1, 1986, to the General Indemnity
         Agreement, dated as of December 1, 1984, between Valencia and TEP,
         as Indemnitors, J. C. Penney Company, Inc., as Owner Participant,
         United States Trust Company of New York, as Owner Trustee, Teachers
         Insurance and Annuity Association of America, as Loan Participant,
         and Marine Midland Bank, N.A., as Indenture Trustee. (Form 10-K for
         the year ended December 31, 1986, File No. 1-5924--Exhibit
         10(e)(13).)

*10(a)(18)--Amendment No. 1, dated June 1, 1986, to the General Indemnity
         Agreement, dated as of December 1, 1984, between Valencia and TEP,
         as Indemnitors, Harvey Hubbell Financial, Inc., as Owner
         Participant, United States Trust Company of New York, as Owner
         Trustee, Teachers Insurance and Annuity Association of America, as
         Loan Participant, and Marine Midland Bank, N.A., as Indenture
         Trustee.  (Form 10-K for the year ended December 31, 1986, File No.
         1-5924--Exhibit 10(e)(14).)

*10(a)(19)--Amendment No. 2, dated as of July 1, 1986, to the General
         Indemnity Agreement, dated as of December 1, 1984, between Valencia
         and TEP, as Indemnitors, J. C. Penney Company, Inc., as Owner
         Participant, United States Trust Company of New York, as Owner
         Trustee, Teachers Insurance and Annuity Association of America, as
         Loan Participant, and Marine Midland Bank, N.A., as Indenture
         Trustee. (Form S-4, Registration No. 33-52860--Exhibit 10(f)(19).)

*10(a)(20)--Amendment No. 2, dated as of June 1, 1987, to the General
         Indemnity Agreement, dated as of December 1, 1984, between Valencia
         and TEP, as Indemnitors, General Foods Credit Corporation, as Owner
         Participant, United States Trust Company of New York, as Owner
         Trustee, Teachers Insurance and Annuity Association of America, as
         Loan Participant, and Marine Midland Bank, N.A., as Indenture
         Trustee. (Form S-4, Registration No. 33-52860--Exhibit 10(f)(20).)

*10(a)(21)--Amendment No. 2, dated as of June 1, 1987, to the General
         Indemnity Agreement, dated as of December 1, 1984, between Valencia
         and TEP, as Indemnitors, Harvey Hubbell Financial, Inc., as Owner
         Participant, United States Trust Company of New York, as Owner
         Trustee, Teachers Insurance and Annuity Association of America, as
         Loan Participant, and Marine Midland Bank, N.A., as Indenture
         Trustee. (Form S-4, Registration No. 33-52860--Exhibit 10(f)(21).)

*10(a)(22)-- Amendment No. 3, dated as of June 1, 1987, to the General
         Indemnity Agreement, dated as of December 1, 1984, between Valencia
         and TEP, as Indemnitors, J. C. Penney Company, Inc., as Owner
         Participant, United States Trust Company of New York, as Owner
         Trustee, Teachers Insurance and Annuity Association of America, as
         Loan Participant, and Marine Midland Bank, N.A., as Indenture
         Trustee. (Form S-4, Registration No. 33-52860--Exhibit 10(f)(22).)

*10(a)(23)--Supplemental Tax Indemnity Agreement, dated July 1, 1986,
         between J. C. Penney Company, Inc., as Owner Participant, and
         Valencia and TEP, as Indemnitors. (Form 10-K for the year ended
         December 31, 1986, File No. 1-5924--Exhibit 10(e)(15).)

*10(a)(24)--Supplemental General Indemnity Agreement, dated as of July 1,
         1986, among Valencia and TEP, as Indemnitors, J. C. Penney Company,
         Inc., as Owner Participant, United States Trust Company of New York,
         as Owner Trustee, Teachers Insurance and Annuity Association of
         America, as Loan Participant, and Marine Midland Bank, N.A., as
         Indenture Trustee. (Form 10-K for the year ended December 31, 1986,
         File No. 1-5924--Exhibit 10(e)(16).)

*10(a)(25)--Amendment No. 1, dated as of June 1, 1987, to the
         Supplemental General Indemnity Agreement, dated as of July 1, 1986,
         among Valencia and TEP, as Indemnitors, J. C. Penney Company, Inc.,
         as Owner Participant, United States Trust Company of New York, as
         Owner Trustee, Teachers Insurance and Annuity Association of
         America, as Loan Participant, and Marine Midland Bank, N.A., as
         Indenture Trustee. (Form S-4, Registration No. 33-52860--Exhibit
         10(f)(25).)

*10(a)(26)--Valencia Agreement, dated as of June 30, 1992, among TEP, as
         Guarantor, Valencia, as Lessee, Teachers Insurance and Annuity
         Association of America, as Loan Participant, Marine Midland Bank,
         N.A., as Indenture Trustee, United States Trust Company of New York,
         as Owner Trustee, and Thomas B. Zakrzewski, as Co-Trustee, and the
         Owner Participants named therein relating to the Restructuring of
         Valencia's lease of the coal-handling facilities at the
         Springerville Generating Station. (Form S-4, Registration No. 33-
         52860--Exhibit 10(f)(26).)

*10(a)(27)--Amendment, dated as of December 15, 1992, to the Lease
         Agreements, dated December 1, 1984, between Valencia, as Lessee, and
         United States Trust Company of New York, as Owner Trustee, and
         Thomas B. Zakrzewski, as Co-Trustee.  (Form S-1, Registration No.
         33-55732--Exhibit 10(f)(27).)

*10(b)(1)--Lease Agreements, dated as of December 1, 1985, between TEP
         and San Carlos Resources Inc. (San Carlos) (a wholly-owned
         subsidiary of the Registrant) jointly and severally, as Lessee, and
         Wilmington Trust Company, as Trustee, as amended and supplemented.
         (Form 10-K for the year ended December 31, 1985, File No. 1-5924--
         Exhibit 10(f)(1).)

*10(b)(2)--Tax Indemnity Agreements, dated as of December 1, 1985,
         between Philip Morris Credit Corporation, IBM Credit Financing
         Corporation and Emerson Finance Co., each as beneficiary under a
         separate trust agreement, dated as of December 1, 1985, with
         Wilmington Trust Company, as Owner Trustee, and William J. Wade, as
         Co-Trustee, and TEP and San Carlos, as Lessee.  (Form 10-K for the
         year ended December 31, 1985, File No. 1-5924--Exhibit 10(f)(2).)

*10(b)(3)--Participation Agreement, dated as of December 1, 1985, among
         TEP and San Carlos as Lessee, Philip Morris Credit Corporation, IBM
         Credit Financing Corporation, and Emerson Finance Co. as Owner
         Participants, Wilmington Trust Company as Owner Trustee, The
         Sumitomo Bank, Limited, New York Branch, as Loan Participant, and
         Bankers Trust Company, as Indenture Trustee. (Form 10-K for the year
         ended December 31, 1985, File No. 1-5924--Exhibit 10(f)(3).)

*10(b)(4)--Restructuring Commitment Agreement, dated as of June 30,
         1992, among TEP and San Carlos, jointly and severally, as Lessee,
         Philip Morris Credit Corporation, IBM Credit Financing Corporation
         and Emerson Capital Funding William J. Wade, as Owner Trustee and
         Co-Trustee, respectively, The Sumitomo Bank, Limited, New York
         Branch, as Loan Participant and United States Trust Company of New
         York, as Indenture Trustee. (Form S-4, Registration No. 33-52860--
         Exhibit 10(g)(4).)

*10(b)(5)--Lease Supplement No. 1, dated December 31, 1985, to Lease
         Agreements, dated as of December 1, 1985, between TEP and San
         Carlos, jointly and severally, as Lessee Trustee and Co-Trustee,
         respectively (document filed relates to Philip Morris Credit
         Corporation; documents relating to IBM Credit Financing Corporation
         and Emerson Financing Co. are not filed but are substantially
         similar). (Form S-4, Registration No. 33-52860--Exhibit 10(g)(5).)

*10(b)(6)--Amendment No. 1, dated as of December 15, 1992, to Lease
         Agreements, dated as of December 1, 1985, between TEP and San
         Carlos, jointly and severally, as Lessee, and Wilmington Trust
         Company and William J. Wade, as Owner Trustee and Co-Trustee,
         respectively, as Lessor.  (Form S-1, Registration No. 33-55732--
         Exhibit 10(g)(6).)

*10(b)(7)--Amendment No. 1, dated as of December 15, 1992, to Tax
         Indemnity Agreements, dated as of December 1, 1985, between Philip
         Morris Credit Corporation, IBM Credit Financing Corporation and
         Emerson Capital Funding Corp., as Owner Participants and TEP and San
         Carlos, jointly and severally, as Lessee.  (Form S-1, Registration
         No. 33-55732--Exhibit 10(g)(7).)

*10(c)(1)--Amended and Restated Participation Agreement, dated as of
         November 15, 1987, among TEP, as Lessee, Ford Motor Credit Company,
         as Owner Participant, Financial Security Assurance Inc., as Surety,
         Wilmington Trust Company and William J. Wade in their respective
         individual capacities as provided therein, but otherwise solely as
         Owner Trustee and Co-Trustee under the Trust Agreement, and Morgan
         Guaranty, in its individual capacity as provided therein, but
         Secured Party. (Form 10-K for the year ended December 31, 1987, File
         No. 1-5924--Exhibit 10(j)(1).)

*10(c)(2)--Lease Agreement, dated as of January 14, 1988, between
         Wilmington Trust Company and William J. Wade, as Owner Trust
         Agreement described therein, dated as of November 15, 1987, between
         such parties and Ford Motor Credit Company, as Lessor, and TEP, as
         Lessee. (Form 10-K for the year ended December 31, 1987, File No. 1-
         5924--Exhibit 10(j)(2).)

*10(c)(3)--Tax Indemnity Agreement, dated as of January 14, 1988,
         between TEP, as Lessee, and Ford Motor Credit Company, as Owner
         Participant, beneficiary under a Trust Agreement, dated as of
         November 15, 1987, with Wilmington Trust Company and William J.
         Wade, Owner Trustee and Co-Trustee, respectively, together as
         Lessor. (Form 10-K for the year ended December 31, 1987, File No. 1-
         5924--Exhibit 10(j)(3).)

*10(c)(4)--Loan Agreement, dated as of January 14, 1988, between the
         Pima County Authority and Wilmington Trust Company and William J.
         Wade in their respective individual capacities as expressly stated,
         but otherwise solely as Owner Trustee and Co-Trustee, respectively,
         under and pursuant to a Trust Agreement, dated as of November 15,
         1987, with Ford Motor Credit Company as Trustor and Debtor relating
         to Industrial Development Lease Obligation Refunding Revenue Bonds,
         1988 Series A (TEP's Irvington Project). (Form 10-K for the year
         ended December 31, 1987, File No. 1-5924--Exhibit 10(j)(4).)

*10(c)(5)--Indenture of Trust, dated as of January 14, 1988, between the
         Pima County Authority and Morgan Guaranty authorizing Industrial
         Development Lease Obligation Refunding Revenue Bonds, 1988 Series A
         (Tucson Electric Power Company Irvington Project). (Form 10-K for
         the year ended December 31, 1987, File No. 1-5924--Exhibit
         10(j)(5).)

*10(c)(6)--Lease Amendment No. 1, dated as of May 1, 1989, between TEP,
         Wilmington Trust Company and William J. Wade as Owner Trustee and
         Co-trustee, respectively under a Trust Agreement dated as of
         November 15, 1987 with Ford Motor Credit Company. (Form 10-K for the
         year ended December 31, 1990, File No. 1-5924--Exhibit 10(i)(6).)

*10(c)(7)--Lease Supplement, dated as of January 1, 1991, between TEP,
         Wilmington Trust Company and William J. Wade as Owner Trustee and
         Co-Trustee, respectively, under a Trust Agreement dated as of
         November 15, 1987, with Ford. (Form 10K for the year ended December
         31, 1991, File No. 1-5924--Exhibit 10(i)(8).)

*10(c)(8)--Lease Supplement, dated as of March 1, 1991, between TEP,
         Wilmington Trust Company and William J. Wade as Owner Trustee and
         Co-Trustee, respectively, under a Trust Agreement dated as of
         November 15, 1987, with Ford. (Form 10-K for the year ended December
         31, 1991, File No. 1-5924--Exhibit 10(i)(9).)

*10(c)(9)--Lease Supplement No. 4, dated as of December 1, 1991, between
         TEP, Wilmington Trust Company and William J. Wade as Owner Trustee
         and Co-Trustee, respectively, under a Trust Agreement dated as of
         November 15, 1987, with Ford. (Form 10-K for the year ended December
         31, 1991, File No. 1-5924--Exhibit 10(i)(10).)

*10(c)(10)--Supplemental Indenture No. 1, dated as of December 1, 1991,
         between the Pima County Authority and Morgan Guaranty relating to
         Industrial Lease Development Obligation Revenue Project). (Form 10-K
         for the year ended December 31, 1991, File No. 1-5924--Exhibit
         10(I)(11).)

*10(c)(11)--Restructuring Commitment Agreement, dated as of June 30,
         1992, among TEP, as Lessee, Ford Motor Credit Company, as Owner
         Participant, Wilmington Trust Company and William J. Wade, as Owner
         Trustee and Co-Trustee, respectively, and Morgan Guaranty, as
         Indenture Trustee and Refunding Trustee, relating to the
         restructuring of the Registrant's lease of Unit 4 at the Irvington
         Generating Station. (Form S-4, Registration No. 33-52860--Exhibit
         10(i)(12).)

*10(c)(12)--Amendment No. 1, dated as of December 15, 1992, to Amended
         and Restated Participation Agreement, dated as of November 15, 1987,
         among TEP, as Lessee, Ford Motor Credit Company, as Owner
         Participant, Wilmington Trust Company and William J. Wade, as Owner
         Trustee and Co-Trustee, respectively, Financial Security Assurance
         Inc., as Surety, and Morgan Guaranty, as Indenture Trustee.  (Form
         S-1, Registration No. 33-55732--Exhibit 10(h)(12).)

*10(c)(13)--Amended and Restated Lease, dated as of December 15, 1992,
         between TEP, as Lessee and Wilmington Trust Company and William J.
         Wade, as Owner Trustee and Co-Trustee, respectively, as Lessor.
         (Form S-1, Registration No. 33-55732--Exhibit 10(h)(13).)

*10(c)(14)--Amended and Restated Tax Indemnity Agreement, dated as of
         December 15, 1992, between TEP, as Lessee, and Ford Motor Credit
         Company, as Owner Participant.  (Form S-1, Registration No. 33-
         55732--Exhibit 10(h)(14).)

*10(d)-- Power Sale Agreement for the years 1990 to 2011, dated as of March
         10, 1988, between TEP and Salt River Project Agricultural
         Improvement and Power District. (Form 10-K for the year ended
         December 31, 1987, File No. 1-5924--Exhibit 10(k).)

+*10(e)(1)--Employment Agreements between TEP and currently in effect
         with Ira R. Adler, Charles E. Bayless, Thomas A. Delawder, Gary L.
         Ellerd, Steven J. Glaser, Thomas N. Hansen, Karen G. Kissinger,
         Kevin P. Larson, George W. Miraben, Dennis R. Nelson, James S.
         Pignatelli and Romano Salvatori.  (Form 10-K for the year ended
         December 31, 1996, File No. 1-5924--Exhibit 10(g)(1).)

+*10(e)(2)--Employment Agreement between TEP and Romano Salvatori.  (Form
         10-K for the year ended December 31, 1996, File No. 1-5924--Exhibit
         10(g)(2).)

*10(e)(3)--Letter, dated February 25, 1992, from Dr. Martha R. Seger to
         TEP and Capital Holding Corporation. (Form S-4, Registration No. 33-
         52860--Exhibit 10(k)(4).)

+10(e)(4)--Amendment No. 1 to Employment Agreement among Romano Salvatori,
         TEP and Nations Energy Corporation.

+10(e)(5)--Amendment No. 1 to Amended and Restated Employment Agreement
         between TEP and currently in effect with Ira R. Adler, Charles E.
         Bayless, Thomas A. Delawder, Gary L. Ellerd, Steven J. Glaser,
         Thomas N. Hansen, Karen G. Kissinger, Kevin P. Larson, George W.
         Miraben, Dennis R. Nelson, James S. Pignatelli and Romano Salvatori.

*10(f)-- Power Sale Agreement, dated April 29, 1988, for the dates of May 16,
         1990 to December 31, 1995, between TEP and Nevada Power Company.
         (Form 10-K for the year ended December 31, 1988, File No 1-5924--
         Exhibit 10(m)(2).)

*10(g)-- Participation Agreement, dated as of June 30, 1992, among TEP, as
         Lessee, various parties thereto, as Owner Wilmington Trust Company
         and William J. Wade, as Owner Trustee and Co-Trustee, respectively,
         and LaSalle National Bank, as Indenture Trustee relating to TEP's
         lease of Springerville Unit 1.  (Form S-1, Registration No. 33-
         55732--Exhibit 10(u).)

*10(h)-- Lease Agreement, dated as of December 15, 1992, between TEP, as
         Lessee and Wilmington Trust Company and William J. Wade, as Owner
         Trustee and Co-Trustee, respectively, as Lessor.  (Form S-1,
         Registration No. 33-55732--Exhibit 10(v).)

*10(i)-- Tax Indemnity Agreements, dated as of December 15, 1992, between the
         various Owner Participants parties thereto and TEP, as Lessee.
         (Form S-1, Registration No. 33-55732, Exhibit 10(w).)

*10(j)-- Restructuring Agreement, dated as of December 1, 1992, between TEP
         and Century Power Corporation.  (Form S-1, Registration No. 33-
         55732--Exhibit 10(x).)

*10(k)-- Voting Agreement, dated as of December 15, 1992, between TEP and
         Chrysler Capital Corporation (documents relating to CILCORP Lease
         Management, Inc., MWR Capital Inc., US West Financial Services, Inc.
         and Philip Morris Capital Corporation are not filed but are
         substantially similar).  (Form S-1, Registration No. 33-55732--
         Exhibit 10(y).)

*10(l)(1)--Wholesale Power Supply Agreement between TEP and Navajo
         Tribal Utility Authority dated January 5, 1993.  (Form 10-K for the
         year ended December 31, 1992, File No. 1-5924--Exhibit 10(t).)

*10(l)(2)--Amended and Restated Wholesale Power Supply Agreement between
         TEP and Navajo Tribal Utility Authority, dated June 25, 1997.  (Form
         10-Q for the quarter ended June 30, 1997, File No. 1-5924--Exhibit
         10.)

10(m) -- Credit Agreement dated as of December 30, 1997, among TEP, Toronto
         Dominion (Texas), Inc., as Administrative Agent, The Bank of New
         York, as Syndication Agent, Societe Generale, as Documentation
         Agent, the lenders party hereto, and the issuing banks party hereto.

+*10(n)-- 1994 Omnibus Stock and Incentive Plan of UniSource Energy.  (Form S-
         8 dated January 6, 1998, File No. 333-43767.)

+*10(o)-- 1994 Outside Director Stock Option Plan of UniSource Energy.  (Form
         S-8 dated January 6, 1998, File No. 333-43765.)

+*10(p)-- Management and Directors Deferred Compensation Plan of UniSource
         Energy.  (Form S-8 dated January 6, 1998, File No. 333-43769.)

11    -- Statement re computation of per share earnings--UniSource Energy.

12    -- Computation of Ratio of Earnings to Fixed Charges--TEP.

16    -- Letter re change in certifying accountant.

21    -- Subsidiaries of the Registrants.

23    -- Consents of experts and counsel.

24    -- Power of Attorney.

27(a) -- Financial Data Schedule--UniSource Energy.

27(b) -- Financial Data Schedule--TEP.

(*)Previously filed as indicated and incorporated herein by reference.
(+)Management contracts or compensatory plans or arrangements required to be
  filed as exhibits to this Form 10-K by item 601(b)(10)(iii) of Regulation
  S-K.

<PAGE>			        

                                                           Appendix B


                                UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549
 

                                 FORM 10-Q


           (Mark One)
               [X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                     THE SECURITIES EXCHANGE ACT OF 1934

                     For The Quarterly Period Ended March 31, 1998

                                     OR

               [X]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                     THE SECURITIES EXCHANGE ACT OF 1934

                      For the transition period from      to      .
                                                    -----   ------


Commission        Registrant; State of Incorporation;     IRS Employer
File Number       Address; and Telephone Number           Identification Number
- -----------       -----------------------------           ---------------------
1-13739           UNISOURCE ENERGY CORPORATION            86-0786732
                  (An Arizona Corporation)
                  220 West Sixth Street
                  Tucson, AZ  85701
                  (520) 571-4000

1-5924            TUCSON ELECTRIC POWER COMPANY           86-0062700
                  (An Arizona Corporation)
                  220 West Sixth Street
                  Tucson, AZ  85701
                  (520) 571-4000


     Indicate by check mark whether each registrant (1) has filed all
reports required to be filed by Section 13 or 15(d) of the Securities
Exchange Act of 1934 during the preceding 12 months (or for such shorter
period that the registrant was required to file such reports), and (2) has
been subject to such filing requirements for the past 90 days.
Yes     X     No
    --------     ---------

     At May 6, 1998, 32,137,409 shares of UniSource Energy Corporation's
Common Stock, no par value (the only class of Common Stock), were
outstanding.

     UniSource Energy Corporation is the sole holder of the 32,162,167
shares of the outstanding Common Stock of Tucson Electric Power Company.





This combined Form 10-Q is separately filed by UniSource Energy Corporation
and Tucson Electric Power Company.  Information contained herein relating to
Tucson Electric Power Company is filed by UniSource Energy Corporation and
separately by Tucson Electric Power Company on its own behalf.  Tucson
Electric Power Company makes no representation as to information relating to
UniSource Energy Corporation or its subsidiaries, except as it may relate to
Tucson Electric Power Company.


                             TABLE OF CONTENTS
                                                                       Page
                                                                      ----
Definitions............................................................. iv
Report of Independent Accountants........................................1
Independent Accountants' Review Report...................................2

                       PART I - FINANCIAL INFORMATION

Item 1.  -- Financial Statements
     UniSource Energy Corporation
         Comparative Condensed Consolidated Statements of Income (Loss).....3
         Comparative Condensed Consolidated Statements of Cash Flows........4
         Comparative Condensed Consolidated Balance Sheets..................5
     Tucson Electric Power Company
         Comparative Condensed Consolidated Statements of Income (Loss).....6
         Comparative Condensed Consolidated Statements of Cash Flows........7
         Comparative Condensed Consolidated Balance Sheets..................8
     Notes to Condensed Consolidated Financial Statements
     Note 1.  Accounting for the Effects of Regulation......................9
     Note 2.  Tax Assessments..............................................10
     Note 3.  Transfer of MEH from TEP to UniSource Energy.................11
     Note 4.  Loans and Guarantees for NEV.................................11
     Note 5.  Long-Term Debt...............................................11
     Note 6.  Rate Matters.................................................12
     Note 7.  Income Taxes.................................................13
     Note 8.  Reclassifications............................................13
     Note 9.  Review by Independent Public Accountants.....................13

Item 2.  -- Management's Discussion and Analysis of Financial Condition and
Results of Operations
     Overview..............................................................14
     Competition
         Wholesale.........................................................15
         Retail............................................................16
     Shared Savings Proposal Before ACC....................................18
     Accounting for the Effects of Regulation
         Accounting Implications...........................................18
         Recent Events That May Impact TEP's Application of FAS 71.........19
     Investments in Energy Related Ventures................................19
     Dividends on Common Stock
         UniSource Energy..................................................20
         TEP...............................................................20
     Earnings..............................................................21
     Results of Operations
          Utility Sales and Revenues.......................................21
           Operating Expenses..............................................22
          Other Income (Deductions)........................................22
           Interest Expense........... ....................................22
       Events Affecting Future Results of Utility Operations
           TEP Generating Resources........................................22
     Liquidity and Capital Resources
       Cash Flows
           UniSource Energy................................................23
           TEP.............................................................23
       Financing Developments
           TEP Sale of Bonds...............................................23
           TEP Credit Agreement............................................24
           TEP First Mortgage Bonds........................................24
           UniSource Energy................................................24
           UniSource Energy--Loans and Guarantees..........................25
     Impact of Year 2000 on Computer Systems and Applications..............25
     Safe Harbor for Forward-Looking Statements............................25

                        PART II - OTHER INFORMATION

Item 1. -- Legal Proceedings
     Tax Assessments.......................................................27
Item 5. - Other Information
     Additional Financial Data.............................................27
Item 6.  -- Exhibits and Reports on Form 8-K...............................27
Signature Page.............................................................28
Exhibit Index..............................................................29




                                DEFINITIONS

The abbreviations and acronyms used in the 1998 First Quarter Form 10-Q are
defined below:
- -------------------------------------------------------------------------------

ACC...............   Arizona Corporation Commission.
ADOR..............   Arizona Department of Revenue.
AET...............   Advanced Energy Technologies, Inc., a wholly-owned
                      subsidiary of MEH Corporation.
Banks.............   The financial institutions party to the Credit
                      Agreement dated as of December 30, 1997.
Common Stock......   The Company's common stock, without par value.
Company or UniSource 
 Energy...........   UniSource Energy Corporation.
Credit Agreement..   Credit Agreement between TEP and the Banks, dated as of
                      December 30, 1997.
EITF..............   Emerging Issues Task Force of the Financial Accounting
                      Standards Board.
FAS 71............   Statement of Financial Accounting Standards #71:
                      Accounting for the Effects of Certain Types of
                      Regulation.
FAS 101...........   Statement of Financial Accounting Standards #101:
                      Regulated Enterprises - Accounting for the
                      Discontinuation of Application of FAS 71.
FAS 121...........   Statement of Financial Accounting Standards #121:
                      Accounting for the Impairment of Long-Lived Assets and
                      for Long-Lived Assets to be Disposed Of.
FERC..............   Federal Energy Regulatory Commission.
First Mortgage 
 Bonds............   First mortgage bonds issued under the General First
                      Mortgage.
General First 
 Mortgage.........   The Indenture, dated as of April 1, 1941, of Tucson
                      Gas, Electric Light and Power Company to The Chase
                      National Bank of the City of New York, as trustee, as
                      supplemented and amended.
General Second 
 Mortgage.........   The Indenture, dated as of December 1, 1992,
                      of Tucson Electric Power Company to Bank of Montreal
                      Trust Company of the City of New York, as trustee, as
                      supplemented.
Global Solar......   Global Solar Energy, L.L.C., a corporation in which a
                      50% interest is owned by AET.
Holding Company 
 Order.............  ACC Order issued November 25, 1997 granting TEP the
                      authority to organize a public utility holding
                      company.
IDBs..............   Industrial development revenue or pollution control
                      bonds.
IRS...............   Internal Revenue Service.
Irvington.........   Irvington Generating Station.
Irvington Lease...   The leveraged lease arrangement relating to Irvington
                      Unit 4.
ISO...............   Independent System Operator.
ITC...............   Investment Tax Credit.
kWh...............   Kilowatt-hour(s).
LOC...............   Letter of Credit.
MEH...............   MEH Corporation, a wholly-owned subsidiary of UniSource
                      Energy.
Millennium........   Millennium Energy Holdings, Inc., a wholly-owned
                      subsidiary of MEH.
MRA...............   Master restructuring agreement between TEP and certain
                      banks which included the Renewable Term Loan,
                      Revolving Credit and certain replacement reimbursement
                      agreements, which was terminated on December 30, 1997.
MSR...............   Modesto, Santa Clara and Redding Public Power Agency.
MW................   Megawatt(s).
NEV...............   New Energy Ventures, L.L.C., a company in which a 50%
                      interest is owned by Millennium.
NEV California....   NEV California, L.L.C., a wholly-owned subsidiary of
                      NEV.
1994 Rate Order...   ACC Rate Order concerning an increase in TEP's retail
                      base rates and certain regulatory write-offs, issued
                      January 11, 1994.
1996 Rate Order...   ACC Rate Order concerning an
                      increase in TEP's retail base rates and the recovery
                      of Springerville Unit 2 costs, issued March 29, 1996.
NOL...............   Net Operating Loss carryforward for income tax
                      purposes.
Renewable Term 
 Loan.............   Credit facility that replaced the Term Loan pursuant
                      to the MRA Sixth Amendment, dated as of November 1,
                      1994, and effective March 7, 1995, and which was
                      terminated December 30, 1997.
Revolving Credit..   $100 million revolving credit facility entered into
                      under the Credit Agreement between a syndicate of
                      certain of the Banks and TEP.
SEC...............   Securities and Exchange Commission.
Second Mortgage 
 Bonds............   TEP's second mortgage bonds issued under the General
                      Second Mortgage.
SES...............   Southwest Energy Solutions, Inc., a wholly-owned
                      subsidiary of MEH.
Shareholders......   Holders of UniSource Energy Common Stock.
Springerville.....   Springerville Generating Station.
Springerville Coal
 Handling Facilities
 Leases...........   Leveraged lease arrangements relating to the coal
                      handling facilities serving Springerville.
Springerville 
 Common 
 Facilities.......   Facilities at Springerville used in
                      common with Springerville Unit 1 and Springerville
                      Unit 2.
Springerville 
 Common Facilities
 Leases...........   Leveraged lease arrangements relating to an undivided
                      one-half interest in certain Springerville Common
                      Facilities.
Springerville 
Unit 1 Leases.....   Leveraged lease arrangements relating to
                      Springerville Unit 1, and an undivided one-half
                      interest in certain Springerville Common Facilities
                      and which has been assumed by TEP.
SSP...............   Shared Savings Proposal filed by TEP with the ACC July
                      9, 1997 requesting a 1.1% annual retail rate
                      reduction.
SWPP..............   SWPP Investment Company, a wholly-owned subsidiary of
                      SES.
SWPPI.............   SWPP International, a wholly-owned subsidiary of SES.
TEP...............   Tucson Electric Power Company, the principal subsidiary
                      of UniSource Energy.
UniSource Energy..   UniSource Energy Corporation.
Valencia..........   Valencia Energy Company, previously a wholly owned
                      subsidiary of TEP, merged into TEP on May 31, 1996.
VSP...............   Voluntary Severance Plan offered to TEP employees and
                      implemented in May 1996.
WSCC..............   Western Systems Coordinating Council.








REPORT OF INDEPENDENT ACCOUNTANTS

To the Board of Directors and Stockholders of
UniSource Energy Corporation and
to the Board of Directors of
Tucson Electric Power Company

We have reviewed the accompanying condensed consolidated balance sheet and
the related condensed consolidated statements of income and of cash flows of
UniSource Energy Corporation and its subsidiaries (the Company) and of
Tucson Electric Power Company and its subsidiaries (TEP) as of and for the
three-month period ended March 31, 1998.  This financial information is the
responsibility of the Company's and TEP's management.  The financial
statements as of March 31, 1997 were reviewed by other independent
accountants whose report dated February 23, 1998 stated that they were not 
aware of any material modifications that should be made to such financial
information for it to be in conformity with generally accepted accounting
principles.

We conducted our review in accordance with standards established by the
American Institute of Certified Public Accountants.  A review of interim
financial information consists principally of applying analytical procedures
to financial data and making inquiries of persons responsible for financial
and accounting matters.  It is substantially less in scope than an audit
conducted in accordance with generally accepted auditing standards, the
objective of which is the expression of an opinion regarding the financial
statements taken as a whole.  Accordingly, we do not express such an
opinion.

Based on our review, we are not aware of any material modifications that
should be made to the accompanying financial information as of and for the
three-month period ended March 31, 1998 for it to be in conformity with
generally accepted accounting principles.

The financial statements of the Company and of TEP for the year ended
December 31, 1997 were audited by other independent accountants whose report
dated February 23, 1998 expressed an unqualified opinion on those
statements.

Price Waterhouse LLP
Phoenix, Arizona
May 5, 1998





INDEPENDENT ACCOUNTANTS' REVIEW REPORT

UniSource Energy Corporation and its Stockholders
Tucson Electric Power Company
220 West Sixth Street
Tucson, Arizona 85701

We have reviewed the condensed consolidated statements of income and cash
flows of UniSource Energy Corporation and its subsidiaries (the Company) and
Tucson Electric Power Company (TEP) for the three-month period ended March
31, 1997.  These financial statements are the responsibility of the
Company's and TEP's management.

We conducted our review in accordance with standards established by the
American Institute of Certified Public Accountants.  A review of interim
financial information consists principally of applying analytical procedures
to financial data and of making inquiries of persons responsible for
financial and accounting matters.  It is substantially less in scope than an
audit conducted in accordance with generally accepted auditing standards,
the objective of which is the expression of an opinion regarding the
financial statements taken as a whole.  Accordingly, we do not express such
an opinion.

Based on our review, we are not aware of any material modifications that
should be made to such condensed consolidated financial statements for them
to be in conformity with generally accepted accounting principles.

We have previously audited, in accordance with generally accepted auditing
standards, the consolidated balance sheets and statements of capitalization
of the Company and TEP as of December 31, 1997 and the related statements of
income, cash flows, and changes in stockholders' equity (deficit) for the
year then ended (not presented herein); and in our report dated February 23,
1998, we expressed an unqualified opinion on those consolidated financial
statements.  In our opinion, the information set forth in the accompanying
condensed consolidated balance sheets as of December 31, 1997 is fairly
stated, in all material respects, in relation to the consolidated balance
sheet from which they have been derived.



DELOITTE & TOUCHE LLP
Tucson, Arizona
February 23, 1998







                        PART I - FINANCIAL INFORMATION
Item 1.  FINANCIAL STATEMENTS
- -----------------------------------------------------------------------------
The weather causes seasonal fluctuations in UniSource Energy's sales. As a
result, quarterly results are not indicative of annual operating results. The
quarterly financial statements that follow are unaudited but reflect all normal
recurring accruals and other adjustments which we believe are necessary for a
fair presentation of the results for the interim periods presented. Also see
Item 2. - Management's Discussion and Analysis of Financial Condition and
Results of Operations.  This quarterly report should be reviewed in conjunction
with the Company's 1997 Form 10-K.

UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS)
                                                       Three Months Ended
                                                            March 31,
                                                         1998       1997
                                                     -Thousands of Dollars-
Operating Revenues
 Retail Customers                                     $138,087    $129,937
 Amortization of MSR Option Gain Regulatory Liability        -       5,013
 Sales for Resale                                       22,854      19,331
                                                      ---------   ---------
    Total Operating Revenues                           160,941     154,281
                                                      ---------   ---------
Operating Expenses
 Fuel and Purchased Power                               48,400      45,646
 Capital Lease Expense                                  25,778      26,276
 Amortization of Springerville Unit 1 Allowance         (7,631)     (7,009)
 Other Operations                                       26,298      23,363
 Maintenance and Repairs                                10,724      10,231
 Depreciation and Amortization                          22,563      21,774
 Taxes Other Than Income Taxes                          12,926      12,625
 Employee Severance Plan Expense - Net                       -       2,933
 Income Taxes                                           (1,937)     (2,348)
                                                      ---------   ---------
    Total Operating Expenses                           137,121     133,491
                                                      ---------   ---------
      Operating Income                                  23,820      20,790
                                                      ---------   ---------
Other Income (Deductions)
 Income Taxes                                             (631)     14,558
 Interest Income                                         1,716       1,709
 Unregulated Energy Businesses - Net                    (4,036)       (932)
 Other                                                     810         (31)
                                                      ---------   ---------
    Total Other Income (Deductions)                     (2,141)     15,304
                                                      ---------   ---------
Interest Expense
 Long-Term Debt                                         17,111      14,117
 Interest Imputed on Losses Recorded at Present Value    8,545       8,279
 Other                                                   3,058       2,206
                                                      ---------   ---------
    Total Interest Expense                              28,714      24,602
                                                      ---------   ---------
Net Income (Loss)                                     $ (7,035)   $ 11,492
                                                      =========   =========
Average Shares of Common Stock Outstanding (000)        32,139      32,139
                                                      =========   =========
Basic and Diluted Earnings per Share                  $  (0.22)   $   0.36
                                                      =========   =========

See Notes to Condensed Consolidated Financial Statements.

UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                                       Three Months Ended
                                                            March 31,
                                                         1998       1997
                                                     -Thousands of Dollars-
Cash Flows from Operating Activities
  Cash Receipts from Retail Customers                 $146,532    $142,918
  Cash Receipts from Sales for Resale                   25,549      22,402
  Fuel and Purchased Power Costs Paid                  (41,527)    (39,847)
  Wages Paid, Net of Amounts Capitalized               (23,257)    (20,259)
  Payment of Other Operations and Maintenance Costs    (23,690)    (18,876)
  Capital Lease Interest Paid                          (41,319)    (37,512)
  Interest Paid, Net of Amounts Capitalized            (17,198)    (13,400)
  Taxes Paid, Net of Amounts Capitalized               (11,519)    (11,121)
  Interest Received                                      2,361       2,262
  Contract Termination Fee Paid                        (10,000)          -
  Other                                                  1,982         410
                                                      ---------   ---------
    Net Cash Flows - Operating Activities                7,914      26,977
                                                      ---------   ---------
Cash Flows from Investing Activities
  Construction Expenditures                            (16,957)    (15,602)
  Investments in Joint Ventures                         (6,000)     (1,338)
  Other                                                    (35)        988
                                                      ---------   ---------
    Net Cash Flows - Investing Activities              (22,992)    (15,952)
                                                      ---------   ---------
Cash Flows from Financing Activities
  Proceeds from Issuance of Long-Term Debt               1,105           -
  Payments on Renewable Term Loan                            -     (31,000)
  Payments to Retire Capital Lease Obligations          (8,737)     (4,061)
  Other                                                 (1,751)        383
                                                      ---------   ---------
    Net Cash Flows - Financing Activities               (9,383)    (34,678)
                                                      ---------   ---------
Net Decrease in Cash and Cash Equivalents              (24,461)    (23,653)
Cash and Cash Equivalents, Beginning of Year           146,256     130,291
                                                      ---------   ---------
Cash and Cash Equivalents, End of Period              $121,795    $106,638
                                                      =========   =========

See Notes to Condensed Consolidated Financial Statements.


UNISOURCE ENERGY CORPORATION
SUPPLEMENTAL CONDENSED CONSOLIDATED CASH FLOW INFORMATION

                                                       Three Months Ended
                                                           March 31,
                                                         1998       1997
                                                     -Thousands of Dollars-
Net Income (Loss)                                     $ (7,035)   $ 11,492
Adjustments to Reconcile Net Income (Loss)
   to Net Operating Cash Flows
  Depreciation and Amortization Expense                 22,563      21,774
  Deferred Income Taxes and Investment Tax Credits-Net  (4,117)    (16,907)
  Lease Payments Deferred                              (12,616)     (8,306)
  Amortization of Regulatory Assets & Liabilities,
   Net of Interest Imputed on Losses Recorded at
   Present Value                                           914      (3,743)
  Deferred Contract Termination Fee                     (9,038)          -
  Loss (Unremitted Earnings) of Unconsolidated
   Subsidiaries                                          6,591        (538)
  Other                                                   (174)     (1,416)
  Changes in Assets and Liabilities which Provided
   (Used) Cash Exclusive of Changes Shown Separately
    Accounts Receivable                                    987       7,534
    Materials and Fuel                                     251         153
    Accounts Payable                                       508       2,369
    Taxes Accrued                                       11,961      11,826
    Other Current Assets and Liabilities                (3,260)       (436)
    Other Deferred Assets and Liabilities                  379       3,175
                                                      ---------   ---------
Net Cash Flows - Operating Activities                 $  7,914    $ 26,977
                                                      =========   =========
Non-Cash Financing Activities (these activities do not affect the statements of
cash flows):
The proceeds from the issuance of $200 million of Pollution Control Revenue
Bonds in March 1998 are held in trust and will be released by the trustee in May
1998 to redeem $200 million of previously issued bonds. See Note 5.

See Notes to Condensed Consolidated Financial Statements.


UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED BALANCE SHEETS
ASSETS
                                                    March 31,  December 31,
                                                       1998        1997
                                                   - Thousands of Dollars -
Utility Plant
  Plant in Service                                  $2,211,650  $2,194,150
  Utility Plant Under Capital Leases                   893,064     893,064
  Construction Work in Progress                         70,692      72,404
                                                    ----------- -----------
    Total Utility Plant                              3,175,406   3,159,618
  Less Accumulated Depreciation and Amortization    (1,001,685)   (982,621)
  Less Accumulated Amortization of Capital Leases      (78,435)    (73,728)
  Less Springerville Unit 1 Allowance                 (168,670)   (167,756)
                                                    ----------- -----------
    Total Utility Plant - Net                        1,926,616   1,935,513
                                                    ----------- -----------
Investments and Other Property                          78,855      78,772
                                                    ----------- -----------
Current Assets
  Cash and Cash Equivalents                            121,795     146,256
  Accounts Receivable                                   70,238      71,225
  Materials and Fuel                                    33,754      34,005
  Deferred Income Taxes - Current                        7,777      14,910
  Long-Term Debt Proceeds Held by Trustee              205,721       6,960
  Other                                                 16,079      16,693
                                                    ----------- -----------
    Total Current Assets                               455,364     290,049
                                                    ----------- -----------
Deferred Debits - Regulatory Assets
  Income Taxes Recoverable Through Future Rates        169,212     170,034
  Deferred Springerville Common Facility Costs          57,587      58,222
  Deferred Springerville Contract Termination Fee       47,115      48,077
  Deferred Springerville Unit 2 Costs                    9,267      11,590
  Deferred Lease Expense                                10,982      11,571
  Other Deferred Regulatory Assets                      10,858      11,089
Deferred Debits - Other                                 21,005      19,492
                                                    ----------- -----------
    Total Deferred Debits                              326,026     330,075
                                                    ----------- -----------
Total Assets                                        $2,786,861  $2,634,409
                                                    =========== ===========

See Notes to Condensed Consolidated Financial Statements.


UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED BALANCE SHEETS
CAPITALIZATION AND OTHER LIABILITIES
                                                     March 31,  December 31,
                                                       1998         1997
                                                   - Thousands of Dollars -
Capitalization
  Common Stock                                      $  638,873  $  638,904
  Accumulated Deficit                                 (429,061)   (422,026)
                                                     ----------- -----------
  Common Stock Equity                                  209,812     216,878
  Capital Lease Obligations                            883,607     890,257
  Long-Term Debt                                     1,215,120   1,215,120
                                                    ----------- -----------
    Total Capitalization                             2,308,539   2,322,255
                                                    ----------- -----------
Current Liabilities
  Current Obligations Under Capital Leases              15,238      14,552
  Current Maturities of Long-Term Debt                 200,500         500
  Accounts Payable                                      35,417      34,909
  Interest Accrued                                      47,004      64,812
  Taxes Accrued                                         36,358      24,397
  Contract Termination Fee Payable                           -      10,000
  Other                                                 12,412      19,051
                                                    ----------- -----------
    Total Current Liabilities                          346,929     168,221
                                                    ----------- -----------
Deferred Credits and Other Liabilities
  Deferred Income Taxes - Noncurrent                    66,107      77,606
  Accumulated Deferred Investment Tax Credits
   Regulatory Liability                                 11,332      11,905
  Emission Allowance Gain Regulatory Liability          17,609      17,591
  Other                                                 36,345      36,831
                                                    ----------- -----------
    Total Deferred Credits and Other Liabilities       131,393     143,933
                                                    ----------- -----------
Total Capitalization and Other Liabilities          $2,786,861  $2,634,409
                                                    =========== ===========

See Notes to Condensed Consolidated Financial Statements.


TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS)

The weather causes seasonal fluctuations in TEP's sales. As a result, quarterly
results are not indicative of annual operating results. The quarterly financial
statements that follow are unaudited but reflect all normal recurring accruals
and other adjustments which we believe are necessary for a fair presentation of
the results for the interim periods presented. Also see Item 2. - Management's
Discussion and Analysis of Financial Condition and Results of Operations.  This
quarterly report should be reviewed in conjunction with the TEP's 1997 Form 10-
K.


TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS)

                                                       Three Months Ended
                                                           March 31,
                                                         1998       1997
                                                     -Thousands of Dollars-
Operating Revenues
 Retail Customers                                     $138,149    $129,937
 Amortization of MSR Option Gain Regulatory Liability        -       5,013
 Sales for Resale                                       22,854      19,331
                                                      ---------   ---------
    Total Operating Revenues                           161,003     154,281
                                                      ---------   ---------
Operating Expenses
 Fuel and Purchased Power                               48,400      45,646
 Capital Lease Expense                                  25,778      26,276
 Amortization of Springerville Unit 1 Allowance         (7,631)     (7,009)
 Other Operations                                       26,298      23,363
 Maintenance and Repairs                                10,724      10,231
 Depreciation and Amortization                          22,563      21,774
 Taxes Other Than Income Taxes                          12,926      12,625
 Employee Severance Plan Expense- Net                        -       2,933
 Income Taxes                                           (1,937)     (2,348)
                                                      ---------   ---------
    Total Operating Expenses                           137,121     133,491
                                                      ---------   ---------
      Operating Income                                  23,882      20,790
                                                      ---------   ---------
Other Income (Deductions)
 Income Taxes                                           (1,560)     14,558
 Interest Income                                         1,716       1,756
 Interest Income-Note Receivable from UniSource Energy   2,300           -
 Other                                                     769      (1,010)
                                                      ---------   ---------
    Total Other Income (Deductions)                      3,225      15,304
                                                      ---------   ---------
Interest Expense
 Long-Term Debt                                         17,111      14,117
 Interest Imputed on Losses Recorded at Present Value    8,545       8,279
 Other                                                   3,058       2,206
                                                      ---------   ---------
    Total Interest Expense                              28,714      24,602
                                                      ---------   ---------
Net Income (Loss)                                     $ (1,607)   $ 11,492
                                                      =========   =========


See Notes to Condensed Consolidated Financial Statements.


TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

                                                       Three Months Ended
                                                            March 31,
                                                         1998       1997
                                                     -Thousands of Dollars-
Cash Flows from Operating Activities
  Cash Receipts from Retail Customers                 $146,532    $142,918
  Cash Receipts from Sales for Resale                   25,549      22,402
  Fuel and Purchased Power Costs Paid                  (41,527)    (39,847)
  Wages Paid, Net of Amounts Capitalized               (22,428)    (20,259)
  Payment of Other Operations and Maintenance Costs    (22,106)    (18,876)
  Capital Lease Interest Paid                          (41,319)    (37,512)
  Interest Paid, Net of Amounts Capitalized            (17,198)    (13,400)
  Taxes Paid, Net of Amounts Capitalized               (11,477)    (11,121)
  Interest Received                                      1,828       2,262
  Contract Termination Fee Paid                        (10,000)          -
  Other                                                    937         410
                                                      ---------   ---------
    Net Cash Flows - Operating Activities                8,791      26,977
                                                      ---------   ---------
Cash Flows from Investing Activities
  Construction Expenditures                            (16,957)    (15,602)
  Transfer of MEH                                      (45,412)          -
  Investments in Joint Ventures                              -      (1,338)
  Other                                                     (6)        988
                                                      ---------   ---------
    Net Cash Flows - Investing Activities              (62,375)    (15,952)
                                                      ---------   ---------
Cash Flows from Financing Activities
  Proceeds from Issuance of Long-Term Debt               1,105           -
  Payments on Renewable Term Loan                            -     (31,000)
  Payments to Retire Capital Lease Obligations          (8,737)     (4,061)
  Other                                                 (1,884)        383
                                                      ---------   ---------
    Net Cash Flows - Financing Activities               (9,516)    (34,678)
                                                      ---------   ---------
Net Decrease in Cash and Cash Equivalents              (63,100)    (23,653)
Cash and Cash Equivalents, Beginning of Year           146,256     130,291
                                                      ---------   ---------
Cash and Cash Equivalents, End of Period              $ 83,156    $106,638
                                                      =========   =========

See Notes to Condensed Consolidated Financial Statements.


TUCSON ELECTRIC POWER COMPANY
SUPPLEMENTAL CONDENSED CONSOLIDATED CASH FLOW INFORMATION

                                                       Three Months Ended
                                                            March 31,
                                                         1998       1997
                                                     -Thousands of Dollars-
Net Income (Loss)                                     $ (1,607)  $  11,492
Adjustments to Reconcile Net Income (Loss) to Net
   Operating Cash Flows
  Depreciation and Amortization Expense                 22,563      21,774
  Deferred Income Taxes and
   Investment Tax Credits - Net                           (377)    (16,907)
  Lease Payments Deferred                              (12,616)     (8,306)
  Amortization of Regulatory Assets & Liabilities, Net
   of Interest Imputed on Losses Recorded at
   Present Value                                           914      (3,743)
  Deferred Contract Termination Fee                     (9,038)          -
  Unremitted Earnings of Unconsolidated Subsidiaries      (213)       (538)
  Other                                                 (1,911)     (1,416)
  Changes in Assets and Liabilities which Provided
   (Used) Cash Exclusive of Changes Shown Separately
    Accounts Receivable                                    (74)      7,534
    Materials and Fuel                                     250         153
    Accounts Payable                                     1,561       2,369
    Taxes Accrued                                       11,962      11,826
    Other Current Assets and Liabilities                (3,002)       (436)
    Other Deferred Assets and Liabilities                  379       3,175
                                                      ---------   ---------
Net Cash Flows - Operating Activities                 $  8,791    $ 26,977
                                                      =========   =========

Non-Cash Financing Activities (these activities do not affect the statements of
cash flows):
The proceeds from the issuance of $200 million of Pollution Control Revenue
Bonds in March 1998 are held in trust and will be released by the trustee in May
1998 to redeem $200 million of previously issued bonds. See Note 5.

See Notes to Condensed Consolidated Financial Statements.


TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED BALANCE SHEETS

ASSETS
                                                    March 31,  December 31,
                                                       1998        1997
                                                   - Thousands of Dollars -
Utility Plant
  Plant in Service                                  $2,211,650  $2,194,150
  Utility Plant Under Capital Leases                   893,064     893,064
  Construction Work in Progress                         70,692      72,404
                                                    ----------- -----------
    Total Utility Plant                              3,175,406   3,159,618
  Less Accumulated Depreciation and Amortization    (1,001,685)   (982,621)
  Less Accumulated Amortization of Capital Leases      (78,435)    (73,728)
  Less Springerville Unit 1 Allowance                 (168,670)   (167,756)
                                                    ----------- -----------
    Total Utility Plant - Net                        1,926,616   1,935,513
                                                    ----------- -----------
Investments and Other Property                          58,029      78,772
                                                   ----------- -----------
Note Receivable from UniSource Energy                   71,640           -
                                                    ---------- -----------
Current Assets
  Cash and Cash Equivalents                             83,156     146,256
  Accounts Receivable                                   71,155      71,225
  Materials and Fuel                                    33,715      34,005
  Deferred Income Taxes - Current                        7,777      14,910
  Long-Term Debt Proceeds Held by Trustee              205,721       6,960
  Other                                                 14,904      16,693
                                                    ----------- -----------
    Total Current Assets                               416,428     290,049
                                                    ----------- -----------
Deferred Debits - Regulatory Assets
  Income Taxes Recoverable Through Future Rates        169,212     170,034
  Deferred Springerville Common Facility Costs          57,587      58,222
  Deferred Springerville Contract Termination Fee       47,115      48,077
  Deferred Springerville Unit 2 Costs                    9,267      11,590
  Deferred Lease Expense                                10,982      11,571
  Other Deferred Regulatory Assets                      10,858      11,089
Deferred Debits - Other                                 21,005      19,492
                                                    ----------- -----------
    Total Deferred Debits                              326,026     330,075
                                                    ----------- -----------
Total Assets                                        $2,798,739  $2,634,409
                                                    =========== ===========

See Notes to Condensed Consolidated Financial Statements.


TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED BALANCE SHEETS
CAPITALIZATION AND OTHER LIABILITIES
                                                    March 31,  December 31,
                                                       1998        1997
                                                   - Thousands of Dollars -

Capitalization
  Common Stock                                      $  645,261  $  645,261
  Capital Stock Expense                                 (6,357)     (6,357)
  Accumulated Deficit                                 (423,633)   (422,026)
                                                    ----------- -----------
  Common Stock Equity                                  215,271     216,878
  Capital Lease Obligations                            883,607     890,257
  Long-Term Debt                                     1,215,120   1,215,120
                                                    ----------- -----------
    Total Capitalization                             2,313,998   2,322,255
                                                    ----------- -----------
Current Liabilities
  Current Obligations Under Capital Leases              15,238      14,552
  Current Maturities of Long-Term Debt                 200,500         500
  Accounts Payable                                      35,642      34,909
  Interest Accrued                                      47,004      64,812
  Taxes Accrued                                         36,327      24,397
  Contract Termination Fee Payable                           -      10,000
  Other                                                 12,442      19,051
                                                    ----------- -----------
    Total Current Liabilities                          347,153     168,221
                                                    ----------- -----------
Deferred Credits and Other Liabilities
  Deferred Income Taxes - Noncurrent                    72,381      77,606
  Accumulated Deferred Investment Tax Credits
   Regulatory Liability                                 11,332      11,905
  Emission Allowance Gain Regulatory Liability          17,609      17,591
  Other                                                 36,266      36,831
                                                    ----------- -----------
    Total Deferred Credits and Other Liabilities       137,588     143,933
                                                    ----------- -----------
Total Capitalization and Other Liabilities          $2,798,739  $2,634,409
                                                    =========== ===========

See Notes to Condensed Consolidated Financial Statements.



NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
NOTE 1.  ACCOUNTING FOR THE EFFECTS OF REGULATION
- -------------------------------------------------

  Accounting Implications

     The ACC regulates TEP's utility business.  TEP generally uses the same
accounting policies and practices used by nonregulated companies for financial
reporting under generally accepted accounting principles.  However, sometimes
these principles, such as FAS 71, require special accounting treatment for
regulated companies to show the effect of regulation.  For example, in setting
TEP's retail rates, the ACC may not currently allow TEP to charge its customers
to recover certain expenses but; instead, require that these charges be charged
to customers in the future.  In this situation, FAS 71 requires TEP not to show
these expenses on its current income statements but to "defer" these items and
show them as "regulatory assets" on the balance sheet until TEP is allowed to
charge its customers. TEP then amortizes these items to the income statement as
charges are billed to customers.  Similarly, certain items of revenue may be
deferred as regulatory liabilities which also are eventually amortized to the
income statement.

    We have recorded regulatory assets and liabilities in our balance sheets in
accordance with FAS 71.  A regulated company must satisfy certain conditions to
apply the accounting policies and practices of FAS 71.  These conditions
include:

  - an independent regulator sets rates;
  - the regulator sets the rates to cover specific costs of delivering service;
and
  - the service territory lacks competitive pressures to reduce rates below the
rates set by the regulator.

We periodically assess whether we continue to meet these conditions. If we were
required to stop applying FAS 71 to all or a portion of TEP's regulated utility
operations, we would write off the related balances of TEP's regulatory assets
and liabilities as a charge in our income statement.  This means our earnings
would be reduced by the net amount of regulatory assets and liabilities, after
applicable deferred income taxes.  Based on the balances of TEP's regulatory
assets and liabilities at March 31, 1998, if we stopped applying FAS 71 to all
of TEP's regulated operations, we would record an extraordinary loss of
approximately $178 million, net of the related deferred income tax benefit of
$99 million.  While our cash flows may be affected by regulatory orders and
market conditions, our cash flows would not be affected if we stopped applying
FAS 71.

     If we stop applying FAS 71, we would need to evaluate the likelihood that
we could recover the cost of TEP's electric plant in the marketplace using the
criteria in FAS 121.  If undiscounted cash flows are less than the carrying
value of those assets, then we would need to write off as an expense a portion
of those plant assets to reflect their current market value. We cannot predict
if we would write off any plant assets as a result of applying FAS 121.

  Recent Events That May Impact TEP's Application of FAS 71

     Legislative and other regulatory measures are being developed in various
states to deregulate the electric generation business.  The SEC and the EITF
have been reviewing whether electric utilities should stop applying FAS 71 to
the business transactions in states where deregulation is occurring.  In
general, the EITF consensus states that utilities must stop accounting for the
electric generation portion of their business under FAS 71 when a deregulation
plan is in place and its terms are known.  The EITF also concludes that
utilities do not need to write off regulatory assets(including those related to
generation) if the cash flow stream from regulated rates includes recovery of
the regulatory assets. We are uncertain how the EITF consensus will impact TEP
as deregulation activities develop in Arizona.  In the future, we may need to
stop applying FAS 71 to the electric generation portion of TEP's business, even
if we believe that we will recover the full amount of our costs under the ACC
competition phase-in plan. Approximately 55% of TEP's net regulatory assets on
the balance sheet relate to electric generation.

     In December 1996, the ACC adopted rules which would introduce retail
electric competition in Arizona. If implemented as adopted, the rules would
require each "Affected Utility" (TEP, Arizona Public Service Company, Citizens
Utilities Company and several cooperatives) to open its retail service area to
competing electric service providers on a phased-in basis over the period 1999
to 2003.  However, the ACC has not adopted specific guidelines for
identification and recovery of stranded costs.  Stranded costs represent costs
incurred by a utility in a regulated market that would not likely be recovered
through the prices charged for electricity and other services in a competitive
market.

     Hearings were held in February 1998 to resolve issues relating to stranded
cost recovery.  TEP, other Affected Utilities, the Residential Utility Consumer
Office, the ACC staff, and various intervenors participated in the hearings.
On May 6, 1998, the Hearing Officer issued a Proposed Order.  The Proposed
Order indicates that the Affected Utilities should have a reasonable
opportunity to recover 100% of their stranded costs and gives the Affected
Utilities three options for stranded cost recovery.  However, it is unclear
whether Affected Utilities would be able to recover 100% of their stranded
costs.  The Proposed Order also specifies that some form of rate cap will be in
place for customers on standard offer during the transition period.

     TEP is currently evaluating the financial implications if the Proposed
Order is adopted, including whether we would be able to apply FAS 71 to the
generation portion of TEP's business.  TEP anticipates filing exceptions to the
Proposed Order.  We cannot determine when the ACC will hold an open meeting to
consider the Proposed Order or whether the ACC will approve, modify or reject
the Proposed Order.  If the Proposed Order is adopted,TEP would have 30 days to
file its choice of one of the three options for stranded cost recovery.  At the
same time, TEP would file an implementation plan, including its estimate of
stranded costs related to generation and regulatory assets. Until such time, we
believe that any estimate of unrecoverable amounts of stranded costs would be
highly speculative.

     Also in January 1998, the Arizona Legislature proposed legislation
introducing retail electric competition in Arizona.  We cannot predict the
outcome of the proposed legislation or whether the ACC and the Arizona
Legislature will propose other initiatives on electric utility industry
restructuring.  We believe, based on previous rate orders, that it is likely
that we will recover the full costs of our investments in electric utility 
plant and regulatory assets. The ACC's final order may require us to stop 
applying FAS 71 to the electric generation portion of TEP's utility 
operations.  If the order provides less than full recovery of stranded costs,
significant write-offs of assets may occur as discussed above.

     Based on the activities that have occurred to date, TEP believes it
continues to meet the criteria to apply FAS 71 to its regulated activities.
However, we cannot predict the outcome of the deregulation efforts in Arizona
described above.

NOTE 2.  TAX ASSESSMENTS
- ------------------------
  Ruling on Arizona Sales Tax Assessments - Coal Sales

    We have received sales tax assessments from the ADOR alleging that Valencia
is liable for sales tax on gross income from coal sales, transportation and
coal-handling services provided to TEP from November 1985 through May 1996.  We
have protested these assessments.  In September 1996, the Arizona Court of
Appeals upheld the validity of the assessment issued for the period November
1985 through March 1990.  In July 1997, the Arizona Supreme Court granted a
Petition for Review, and oral arguments were held during December 1997.  We
expect the Arizona Supreme Court to render its opinion in the second quarter of
1998.  We are also protesting the assessments for the period April 1990 through
May 1996.

     We have previously recorded an expense and a related liability for the
sales taxes and interest that we believe are probable of incurrence for the
period November 1985 through May 1996.  Arizona law generally requires payment
of an assessment prior to pursuing the appellate process.  We previously paid,
under protest, a total of $23 million of the disputed sales tax assessments.
These payments will be refunded if we are successful in the appeals process.

     On May 31, 1996, Valencia was merged into TEP.  Because TEP now acquires
coal directly from other companies, we do not believe we are liable for sales
tax computed on a basis similar to the assessments described above after May 
31, 1996.  For periods prior to May 31, 1996, we continue to record an 
estimated interest expense on the disputed assessments.

  Arizona Sales Tax Assessments - Leases

     The ADOR has issued sales tax assessments to some of TEP's lessors of
generation-related facilities and equipment.  The assessments allege sales tax
liability on a component of rents we paid on the Springerville Unit 1 Leases,
the Springerville Common Facilities Leases, the Irvington Lease and the
Springerville Coal Handling Facilities Lease from August 1, 1988 to September
30, 1993.  Due to indemnification provisions in the lease agreements, if the
ADOR prevails, we would be required to reimburse the lessors for the sales 
taxes that they pay.

     We have recorded a liability for the probable amount of sales taxes and
interest due as of March 31, 1998.  If the ADOR prevails, we would need to
record an additional expense and related liability.  Even though it is
reasonably possible that the resolution of this issue could result in
approximately $22 million of additional sales tax expense, we do not believe
this outcome is likely. We do not expect that the resolution of this assessment
will have a material negative impact on the financial statements. We believe
that the ultimate resolution of this issue will occur over a period of two to
four years.

  Income Tax Assessments

     In February 1998, the IRS issued an income tax assessment for the 1992 and
1993 tax years. The IRS is challenging our treatment for income tax purposes of
various items relating to the 1992 Financial Restructuring, including the amount
of NOL and ITC generated before December 1991 that may be used to reduce taxes
in future periods.

     Due to the Financial Restructuring, a change in ownership of TEP occurred
for tax purposes in December 1991.  As a result, the use of the NOL and ITC
generated before December 1991 may be limited under the tax code.  The IRS is
challenging our calculation of this limitation.  At March 31, 1998, pre-change
federal NOL and ITC carryforwards were approximately $281 million and $26
million, respectively.  In addition to the pre-change NOL and ITC which are
subject to the limitation, $180 million of federal NOL at March 31, 1998,is not
subject to the limitation.

    Resolution of this matter is not expected to have a material adverse impact
on the financial statements.

NOTE 3.  TRANSFER OF MEH FROM TEP TO UNISOURCE ENERGY
- -----------------------------------------------------

     On January 1, 1998, TEP became a subsidiary of UniSource Energy.  At the
same time,TEP transferred MEH to UniSource Energy and received as consideration
from UniSource Energy a $95 million 10-year promissory note with a yearly
interest rate of 9.78%.  Approximately $25 million of this note represents a
gain to TEP.  TEP has not recorded this gain.  Instead, this gain will be
reflected as an increase in TEP's common equity when UniSource Energy pays the
principal portion of the note.  The note receivable appears on TEP's
consolidated balance sheet but does not appear on UniSource Energy's
consolidated balance sheet because intercompany balances and transactions are
eliminated when financial statements are consolidated.

     MEH owns Advanced Energy Technologies, Inc., Millennium Energy Holdings,
Inc., Nations Energy Corporation and Southwest Energy Solutions, Inc.

    The transfer of MEH's cash balance of $45.4 million as part of the transfer
of MEH to UniSource Energy is included in the Cash Flows from Investing
Activities in TEP's cash flow statement for the three months ended March 31,
1998.

NOTE 4.  LOANS AND GUARANTEES FOR NEV
- -------------------------------------

     In December 1997, Millennium committed to provide NEV with $20 million of
funding. At NEV's option, the funding can be in the form of additional equity,
preferred equity, guarantees or it can be partially satisfied with $10 million
in loans from Millennium, or a combination of these alternatives.  At April 30,
1998, NEV had received the following under the $20 million commitment:

  - Millennium provided $7 million in loans to NEV.
  - UniSource Energy issued guarantees in the aggregate amount of $5 million to
    secure the obligations of NEV to counterparties to energy purchase and sale
    agreements.
  - UniSource Energy also issued a $1 million guarantee to secure the
    obligations of NEV under its Agreement for Services with LG&E Energy 
    Marketing, Inc.

As a result of these loans and guarantees, the remaining commitment amount
available was $7 million at April 30, 1998.

     UniSource Energy is the guarantor of $16.65 million of performance bonds
that secure the amounts NEV California owes to the California utility
distribution companies (UDCs) for services provided by the UDCs in connection
with NEV California's sales in the California retail electric market.  NEV
California bills its customers for these UDC charges.

NOTE 5.  LONG-TERM DEBT
- -----------------------

     In March 1998, the Apache County, Arizona Industrial Development Authority
issued $200 million of Pollution Control Revenue Bonds and loaned the proceeds
to TEP.  These bonds are included in Long-Term Debt on our balance sheet.  The
new bonds, which are unsecured, were sold in three series: Series A ($83.7
million) bears interest at 5.85% and matures in 2028; Series B ($99.8 million)
bears interest at 5.875% and matures in 2033;and Series C ($16.5 million) bears
interest at 5.85% and matures in 2026.

    The proceeds from the issuance of the new bonds will be used in May 1998 to
redeem $200 million of previously issued variable interest rate bonds that would
have matured in 2020 and 2021. The previously issued bonds are included in
Current Maturities of Long-Term Debt in our balance sheet at March 31, 1998.
Until the previously issued bonds are redeemed, the proceeds from issuance of
the new bonds will be recorded in the balance sheets under Current Assets as
Long-Term Debt Proceeds Held by Trustee.

NOTE 6.  RATE MATTERS
- ---------------------

  Shared Savings Proposal

     On July 9, 1997, TEP filed with the ACC a request for an annual rate
reduction of $6.8 million (or 1.1%) for retail customers. This filing is in the
form of a Shared Savings Proposal (SSP) which includes a sharing of cost
containment benefits with customers and a reduction of potentially stranded
costs associated with the introduction of retail electric competition in
Arizona.  The SSP identifies $20.8 million in savings allocable to ACC
jurisdictional operations. The cost containment savings were realized primarily
from renegotiated fuel contracts and a 15% reduction in our workforce from the
1996 Voluntary Severance Program.  The ACC has not set a date to decide on this
matter.

    The proposed $6.8 million rate reduction represents a 50/50 sharing between
TEP and its customers of $13.6 million of the cost savings. The SSP would allow
TEP to use the remaining $7.2 million of cost savings to reduce (mitigate)
potentially stranded costs by accelerating the amortization of Retail Excess
Capacity Deferrals.  Retail Excess Capacity Deferrals represent operating and
capital costs associated with Springerville Unit 2 capacity which the ACC did
not allow TEP to recover in rates until the 1994 and 1996 Rate Orders.  These
Retail Excess Capacity Deferrals totaled $87.5 million and $88.7 million at
March 31, 1998 and December 31, 1997, respectively.  These deferrals are only
reflected in our regulatory calculations.  The accompanying balance sheets do
not include these deferrals as the costs were expensed when incurred for
financial reporting purposes. The proposed $7.2 million (after tax) increase in
annual amortization expense for those excess capacity deferrals would decrease
the amortization period from 20 years to 5.6 years as of December 1996.  The
proposed increase in amortization expense would be reflected in TEP's 
regulatory accounting records but would have no impact on the expenses 
included in the financial statements.

  Springerville Coal Contract Termination Fee

     On June 27, 1997, TEP signed an agreement with the coal supplier for the
Springerville Generating Station to terminate the then-existing coal supply
contract and enter into a new, more cost effective contract with the same
supplier.  TEP paid a $50 million termination fee in three installments:  $30
million paid on June 30, 1997; $10 million paid on September 30, 1997; and $10
million paid on March 31, 1998.

     TEP asked the ACC, as part of the SSP, to allow the termination fee to be
recorded as a regulatory asset and to be amortized to fuel expense over the 13-
year term of the new agreement.  On July 29, 1997, the ACC issued an interim
accounting order allowing TEP to defer the $50 million termination fee as a
regulatory asset in the balance sheet until the ACC decides whether the $50
million termination fee should be recovered through retail rates.  The interim
accounting order also allowed TEP to begin amortizing the termination fee to
fuel expense.  If the ACC ultimately disallows recovery,the unamortized portion
of the $50 million termination fee would be expensed immediately.  The ACC has
not set a date to decide on this matter.

NOTE 7.  INCOME TAXES
- ---------------------

     The differences between the income tax expense (benefit) and the amount
obtained by multiplying income before income taxes by the U.S.statutory federal
income tax rate are as follows:

                                 UniSource Energy             TEP
                                 ----------------         ------------
                                Three Months Ended   Three Months Ended
                                    March 31,              March 31,
                                 1998       1997        1998       1997
                                ---------------------------------------
                                       - Thousands of Dollars -
Federal Income Tax Benefit
 at Statutory Rate             $(3,903)  $ (1,895)   $ (694)  $ (1,895)
  State Income Tax Benefit,
   Net of Federal Deduction       (601)      (291)     (107)      (291)
Depreciation Differences
   (Flow Through Basis)          1,040          -     1,040          -
  Investment Tax Credit
   Amortization                   (573)      (976)     (573)      (976)
  Reduction in Valuation
   Allowance                         -    (14,318)        -    (14,318)
  Other                            (80)       574       (43)       574
                               --------  ---------   -------  ---------
Total Benefit for Federal
 and State Income Taxes        $(4,117)  $(16,906)   $ (377)  $(16,906)
                               ========  =========   =======  =========

     Income taxes are included in the income statements as follows:

                                UniSource Energy             TEP
                                ----------------         ------------
                               Three Months Ended   Three Months Ended
                                   March 31,              March 31,
                                1998       1997        1998       1997
                               ---------------------------------------
                                       - Thousands of Dollars -
Operating Expenses            $(1,937)  $ (2,348)  $(1,937)  $ (2,348)
Other Income (Deductions)         631    (14,558)    1,560    (14,558)
Unregulated Energy
  Businesses - Net             (2,811)         -         -          -
                              --------  ---------  --------  ---------
Total Income Tax Benefit      $(4,117)  $(16,906)  $  (377)  $(16,906)
                              ========  =========  ========  =========

     The reduction in the valuation allowance and corresponding NOL benefit in
1997 are primarily due to revisions in the estimated amount of NOLs that we
expect to offset future taxable income. As of December 31, 1997, both UniSource
Energy and TEP had recorded the amount of prior period NOL benefit that we
expect to utilize on future income tax returns. At the present time, we are not
able to estimate future additional amounts of NOL benefit that we may recognize
in the income statements of either UniSource Energy or TEP.  This is because
there are still open tax years for which there may be additional assessments 
and because federal and state NOL carryforwards have varying expiration dates.
We do not expect to recognize additional amounts of NOL benefit until such 
items are resolved.

NOTE 8.  RECLASSIFICATIONS
- --------------------------

     Minor reclassifications have been made to the prior year financial
statements to conform to the current year's presentation.

NOTE 9.  REVIEW BY INDEPENDENT PUBLIC ACCOUNTANTS
- -------------------------------------------------

     With respect to the unaudited consolidated financial information of
UniSource Energy and TEP for the three-month periods ended March 31,1998, Price
Waterhouse LLP reported that they have applied limited procedures in accordance
with professional standards for a review of such information. However, their
separate report dated May 5, 1998 appearing herein, states that they did not
audit and they do not express an opinion on that unaudited consolidated
financial information. Price Waterhouse LLP has not carried out any significant
or additional audit tests beyond those which would have been necessary if their
report had not been included.  Accordingly, the degree of reliance on their
report on such information should be restricted in light of the limited nature
of the review procedures applied.  Price Waterhouse LLP is not subject to the
liability provisions of section 11 of the Securities Act of 1933 for their
report on the unaudited consolidated financial information because that report
is not a "report" or a "part" of a registration statement prepared or certified
by Price Waterhouse LLP within the meaning of sections 7 and 11 of the Act.



ITEM 2. - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
- -----------------------------------------------------------------------------

     UniSource Energy is a holding company which owns all of the outstanding
common stock of TEP and MEH.  TEP is an operating public utility engaged in
the generation, purchase, transmission, distribution and sale of electricity
for customers in the greater Tucson, Arizona area and to wholesale
customers.  MEH owns all of the outstanding common stock of four
subsidiaries established for the purpose of operating or investing in
various unregulated energy-related businesses.

     TEP is the principal subsidiary of UniSource Energy and accounts for
substantially all of its assets, revenues and net income.  The financial
condition and results of operations of TEP are currently the principal
factors affecting the financial condition and results of operations of
UniSource Energy on an annual basis.

     Management's Discussion and Analysis explains the general financial
condition and the results of operations for UniSource Energy and its
business subsidiaries including:

  -operating results during the first quarter compared with the same period
   in the prior year,
  -the outlook for dividends on common stock,
  -changes in liquidity and capital resources during the first quarter of
   1998, and
  -expectations of identifiable material trends which may affect our
   business in the future.

     Management's Discussion and Analysis should be read along with the
Company's Condensed Consolidated Financial Statements, beginning on page 2,
which present the results of operations for the quarters ended March 31,
1998 and 1997.  Management's Discussion and Analysis analyzes and explains
the differences between periods for specific line items of the Condensed
Consolidated Financial Statements.

OVERVIEW
- --------

     UniSource Energy recorded a net loss of $7.0 million for the first
quarter of 1998, compared with net income of $11.5 million in the first
quarter of 1997.  The results in the first quarter of 1997 included the
effect of non-recurring tax benefits, which was partially offset by non-
recurring expenses, as set forth below:

  -$14.3 million net operating loss carryforward tax benefits,
  -$2.9 million in pre-tax VSP expense, and
  -$1.1 million in pre-tax consulting fees paid to new business ventures.

Excluding these one-time adjustments, we would have recorded a net loss of
$0.3 million in the first quarter of 1997.  Our results in the first quarter
of 1998 were affected primarily by the following factors: losses from
unregulated energy-related subsidiaries ($4.0 million after-tax), lower non-
cash regulatory revenues ($5.0 pre-tax), and higher interest expense ($4.1
million pre-tax).  These factors are discussed in more detail in Results of
Operations and Investments in Energy-Related Ventures, below.

     Utility operating revenues grew by 4% while operating income grew by
15% in the first quarter of 1998 compared with the first quarter of 1997.
Growth in the number of customers in TEP's retail service area, increased
kilowatt-hour sales to both retail and wholesale customers due to cooler
weather, and a moderate 3% overall increase in operating expenses
contributed to this improvement in the first quarter of 1998.

     The Company's and TEP's financial prospects continue to be subject to
regulatory, economic, and other uncertainties.  These uncertainties include
the extent to which TEP can alter operations and reduce costs in response to
industry changes or unanticipated economic downturns, which may be limited
by continued high financial and operating leverage.  Our future success will
depend, in part, on our ability to contain and/or reduce the costs of
serving retail customers and the level of sales to those customers.  Until
the uncertainties surrounding the introduction of retail competition in
Arizona are resolved, predicting the level of TEP's future energy sales and
the composition of its future revenues is difficult.  However, we expect
retail competition will exist in our local market within the next five
years.  See Competition, Retail below.  In a deregulated environment,
revenues from energy sales will be less certain, although revenues from
transmission and distribution services, which we expect to remain regulated,
would likely continue to grow.  Even in a deregulated environment, TEP
expects to continue to benefit from population and economic growth in the
Tucson area through increased revenues from its regulated distribution
services.

     The Company is addressing the uncertainties discussed above and is
positioning itself to benefit from the changing regulatory environment.  We
are improving cost measurement and management techniques and are re-
engineering various functions at TEP.  We have also extended contracts,
where appropriate, for large wholesale and retail customers, and are
developing new affiliates to provide energy services to markets beyond TEP's
retail service territory.  See Results of Operations; Competition, Retail;
Shared Savings Proposal Before the ACC; and Investments in Energy-Related
Ventures, below.

     Since April 1997, we have made significant progress in our financial
strategy to reduce refinancing risk by extending maturities of long-term
debt and letters of credit and to reduce exposure to variable interest rates
by refinancing with fixed interest rates.  TEP refinanced variable rate debt
obligations at fixed rates and entered into a new bank Credit Agreement to
replace the MRA.  Long-term debt obligations totaling $192 million currently
mature between 1999 and 2003.  TEP plans to refinance a substantial portion
of these obligations during 1998.  See Financing Developments, TEP First
Mortgage Bonds, below.

     Despite these improvements, TEP's and UniSource Energy's consolidated
capital structures remain highly leveraged.  Although TEP refinanced and
extended the maturities of certain debt obligations at favorable rates and
terms in 1997 and during the first quarter of 1998, the Company might not
have continued access to the capital markets at similar rates and terms.
Despite the reduction in variable rate debt obligations, changes in interest
rates on its remaining variable rate debt will continue to affect TEP's
earnings and cash flow.  Following the redemption of certain pollution
control revenue bonds on May 15, 1998, TEP will have $329 million aggregate
principal amount of variable debt obligations.  On March 31, 1997, variable
rate debt totaled $805 million.  See Financing Developments, TEP Sale of
Bonds, below.

     TEP is currently unable to pay dividends to UniSource Energy because it
fails to meet certain requirements contained in some of its First Mortgage
Bond obligations.  As a result, cash flow from TEP to UniSource Energy is
limited.  This, in turn, limits UniSource Energy's ability to pay dividends.
See Dividends on Common Stock below.

     During the next twelve months, TEP expects to fund its operating
activities and construction expenditures with internal cash flows, existing
cash balances, and, if necessary, borrowings under the Revolving Credit.  As
of May 6, 1998, cash balances, including cash equivalents for UniSource
Energy, were approximately $104 million, of which $65 million was held by
TEP and its consolidated subsidiaries.

COMPETITION
- -----------

   WHOLESALE

     TEP competes with other utilities, marketers and independent power
producers in the sale of electric capacity and energy in the wholesale
market.  FERC generally does not permit TEP's prices for wholesale sales of
capacity and energy to exceed rates determined on a cost of service basis.
However, in the fall of 1997, FERC granted TEP a tariff to sell at market-
based rates.  In the current market, wholesale prices are substantially
below total cost of service, but in all instances, we make wholesale sales
at prices which exceed fuel and other variable costs.  In addition, we
expect competition to sell capacity to remain vigorous.  Prices may remain
depressed for at least the next several years due to increased competition
and surplus capacity in the southwestern United States.  Competition for the
sale of capacity and energy is influenced by the following factors:

  -availability of capacity in the southwestern United States,
  -the availability and prices of natural gas and oil,
  -spot energy prices, and
  -transmission access.

     The FERC issued two orders pertaining to transmission access in April
1996.  FERC Order No. 888 requires all public utilities that own, control,
or operate interstate transmission facilities to offer transmission service
to others under a single tariff.  This tariff must incorporate certain
minimum terms and conditions of transmission service established by the FERC
and must also be used by public utilities for their own wholesale market
transactions.  Transmission and generation services for new wholesale
service are to be unbundled and priced separately.  FERC Order No. 889
requires transmission service providers to establish or participate in an
open access same-time information system (OASIS) that provides information
on the availability of transmission capacity to wholesale market
participants.  The order also establishes standards of conduct to prevent
employees of a public utility engaged in marketing functions from obtaining
preferential access to OASIS-related information or from engaging in
discriminatory business practices.  TEP is in compliance with the
requirements of FERC Orders 888 and 889.

     TEP, along with other transmission owners and users located in the
southwestern United States, is investigating the feasibility of forming an
independent system operator (ISO) for the region.  An ISO would be
responsible for ensuring transmission reliability and nondiscriminatory
access to the regional transmission grid.  The working group held three sets
of public meetings to obtain input to the study and completed the initial
feasibility study in September 1997.  The participants have begun detailed
developmental work.  The formation of an ISO would be subject to approval by
the FERC and state regulatory authorities in the region.  The financial
aspects of forming an independent system operator, including the potential
effects on TEP's future results of operations, will be examined as part of
the development work.

    RETAIL

      Under current law, TEP does not compete with other companies for
electric service in TEP's retail service territory.   However, TEP competes
against gas service suppliers and others who provide energy services.  TEP
actively markets energy and customized energy-related services.  We have not
lost any customers to self-generation partly because of these efforts.  For
example, in recent years, TEP executed new contracts with two principal
customers that provide approximately 9% of TEP's total annual retail
revenues.  Both customers are in the copper mining business.  The new
contracts include price reductions, term extensions, and a provision for
interruptible service.  These contracts expire in March 2001 and January
2003.  These mining customers cannot terminate the contracts early without
giving us at least one and up to two years prior notice.  We have not
received any such notices.

      In December 1996, the ACC adopted rules that, if implemented as
adopted, would require a phase-in of retail electric competition in Arizona
over a four-year period beginning January 1, 1999.  The adopted rules are a
framework to implement competition.  The ACC rules, if implemented as
adopted, would require each "Affected Utility" (TEP, APS, Citizens Utilities
Company, and several electric cooperatives) to open its retail service area
to competing electric service providers over the period 1999 to 2003 and
would permit Affected Utilities to sell power at unregulated market prices.
Beginning January 1, 1999, 20% of retail customers would be eligible to
choose their electric service provider from companies certificated by the
ACC.  This percentage increases to 50% beginning January 1, 2001 and to 100%
by January 1, 2003.  Under the adopted rules, it is unclear which customers
would be eligible to choose during the transition years.  Electric service
providers would include Affected Utilities as well as other entities
(including power marketers and out-of-state utilities) that apply for and
receive a certificate of convenience and necessity from the ACC.   Other
electric utilities not regulated by the ACC, such as the Salt River Project
and certain municipal utilities, would be granted certificates to compete
under the ACC's rules if these utilities would allow their service
territories to be similarly open to competing service providers.

      Under the rules, Affected Utilities would be required to provide
distribution wheeling services (i.e., retail wheeling) at rates approved by
the ACC.  Retail wheeling involves a utility transmitting energy produced by
other entities over its transmission and distribution system to consumers
located in its present retail service area.  The availability of wheeling
services will make it easier for entities to provide services outside their
traditional service territory.  This exposes TEP to the risk that TEP's
distribution customers may choose to purchase their energy from competitors.
However, TEP would have the opportunity to sell power at market prices to
retail customers outside of TEP's current service area.  Until retail
competition has been substantially implemented, each Affected Utility would
be required to offer services to all consumers located in their present
retail service areas.

      The rules, as adopted by the ACC, specify that the ACC would allow
recovery of unmitigated stranded costs by Affected Utilities.  Stranded
costs represent costs incurred by a utility in a regulated market that
likely would not be recovered through the prices charged for electricity and
other services in a competitive market.  According to the adopted rules, to
recover stranded costs, utilities will need to demonstrate to the ACC that
they have taken every feasible, cost-effective measure to mitigate or offset
stranded costs.  Also, Affected Utilities would have to seek ACC approval of
distribution charges or other means of recovering stranded costs from
current customers who elect to use another electricity provider.

      In January 1998, TEP filed its position regarding stranded cost
recovery with the ACC.  We believe that TEP and other Affected Utilities
should have the opportunity to recover all of their stranded costs and that
stranded costs should be calculated as the difference between future
revenues under traditional regulation and future revenues in a competitive
market.

      Hearings were held in February 1998 to resolve issues relating to
stranded cost recovery.  TEP, other Affected Utilities, the Residential
Utility Consumer Office, the ACC staff, and various intervenors participated
in the hearings.  On May 6, 1998, the Hearing Officer issued a Proposed
Order.  The Proposed Order indicates that the Affected Utilities should have
a reasonable opportunity to recover 100% of their stranded costs and gives
the Affected Utilities three options for stranded cost recovery.

 (1) Net Revenues Lost Methodology--This option would provide for recovery
     of stranded costs through a Competitive Transition Charge (CTC) using a
     net revenues lost approach for a five-year period beginning in 1999.  A
     net revenues lost approach would compare estimates of generation
     revenues under competition to generation revenues under continued
     regulation.  The difference, if any, would represent stranded costs.
     Under this option, customers remaining on standard offer service would
     pay 100% of their proportionate share of stranded costs each year.
     Customers who elect to purchase energy from competitors would pay 100%
     of their proportionate share of stranded costs in the first year
     through the CTC, and during each successive year, this percentage would
     decrease by 20%.  The Proposed Order indicates that through customer
     growth and other mitigation efforts, Affected Utilities should still be
     able to collect 100% of their stranded costs despite the annual
     reduction in the CTC.

 (2) Divestiture/Auction Methodology--This option would provide for an
     auction and divestiture of generation assets where the difference
     between market and book value would represent stranded costs.  The
     Affected Utility would be permitted to collect 100% of stranded costs
     through a CTC over a 10-year period.  However, no return would be
     provided on the unamortized balance of stranded costs during this 10-
     year period.

 (3) Financial Integrity Methodology--This option would provide for stranded
     cost recovery through a CTC which would be calculated to provide
     sufficient revenues for the Affected Utility to maintain its financial
     integrity and to meet minimum financial ratios (not specified in the
     Proposed Order) for a 10-year period.

The Proposed Order also specifies that some form of rate cap would be in
place for customers on standard offer during the transition period.

      TEP is currently evaluating the Proposed Order to determine the
potential financial implications to the Company if it is adopted.  TEP
anticipates filing exceptions to the Proposed Order.  We cannot determine
when the ACC will hold an open meeting to consider the Proposed Order or
whether the ACC will approve, modify or reject the Proposed Order.  If the
Proposed Order is adopted, TEP would have 30 days to file its choice of one
of the three options for stranded cost recovery.  At the same time, TEP
would need to file an implementation plan, including its estimate of
stranded costs related to generation and regulatory assets.  Until such
time, we believe that any estimate of unrecoverable amounts of stranded
costs would be highly speculative.

      In February 1997, TEP filed an appeal of the ACC order adopting retail
electric competition rules in the Arizona Superior Court.  The Company filed
a motion for summary judgment, claiming, among other things that the
Competition Rules:  (a) violated the Regulatory Compact between TEP and the
State of Arizona; (b) confiscated TEP's property; and (c) violated due
process.  The Court did not grant summary judgment but ruled that the
Commission must hold hearings before it can modify TEP's Certificate of
Convenience and Necessity (CC&N).  No trial date has been set in the case
and no final order has been issued.   We are unable to predict the outcome
of the appeal or the effects such rules would have on future results of
operations.

      A legislative study committee established by the Arizona Legislature
issued a report on retail electric competition in December 1997.  The report
identified tax and other issues for the legislature to address.  In January
1998, Arizona legislators introduced HB 2663 regarding the implementation of
retail electric competition in Arizona.  This bill is currently under
consideration in the Arizona State Legislature, and would require the
introduction of customer choice to 20% of each utility's retail load by
December 31, 1998 and to all utility retail customers by December 31, 2000.
This legislation only relates directly to government-owned utility companies
such as SRP; however, the bill encourages broader application of the
legislation's principles by the ACC to the state's investor-owned utilities
and cooperatives, including TEP.

      We cannot predict the outcome of the proposed legislation or the ACC's
retail competition rules.  However, we believe that certain matters in the
ACC's current retail competition rules may require legislative changes,
while others may require amendments to the Arizona state constitution.
Additionally, federal legislators introduced several retail competition
initiatives in Congress which, if passed, could modify or override the
actions taken by the ACC or the Arizona Legislature.  We will continue to
assess the likely impact on TEP of the ACC's retail competition rules,
proposed legislation, and other potential market reforms.  We are unable to
predict the ultimate impact of increased retail competition on future
results of our operations.  See Accounting for the Effects of Regulation
below for a discussion of the potential impact of increased competition on
the Company's accounting policies.


SHARED SAVINGS PROPOSAL BEFORE THE ACC
- --------------------------------------

     On July 9, 1997, TEP filed with the ACC a request for an annual rate
reduction of $6.8 million (or 1.1%) for retail customers.  This filing is in
the form of a Shared Savings Proposal (SSP) which includes a sharing of cost
containment benefits with customers and a reduction of potentially stranded
costs associated with the introduction of retail electric competition in
Arizona. The SSP identifies $20.8 million in savings allocable to ACC
jurisdictional operations. The cost containment savings were realized
primarily from renegotiated fuel contracts and a 15% reduction in our
workforce from the 1996 Voluntary Severance Program.  The ACC has not set a
date to decide on this matter.

     The proposed $6.8 million rate reduction represents a 50/50 sharing
between TEP and its customers of $13.6 million of the cost savings.  The SSP
would allow TEP to use the remaining $7.2 million of cost savings to reduce
(mitigate) potentially stranded costs by accelerating the amortization of
Retail Excess Capacity Deferrals.  Retail Excess Capacity Deferrals
represent operating and capital costs associated with Springerville Unit 2
capacity which the ACC did not allow TEP to recover in rates until the 1994
and 1996 Rate Orders.  Those Retail Excess Capacity Deferrals totaled $87.5
million and $88.7 million at March 31, 1998 and December 31, 1997,
respectively.  Those deferrals are only reflected in our regulatory
calculations.  The accompanying balance sheets do not include these
deferrals as the costs were expensed when incurred for financial reporting
purposes.  The proposed $7.2 million increase in annual amortization expense
for those excess capacity deferrals would decrease the amortization period
from 20 years to 5.6 years as of December 1996.  The proposed increase in
amortization expense would be reflected in TEP's regulatory accounting
records but would have no impact on the expenses included in the financial
statements.

ACCOUNTING FOR THE EFFECTS OF REGULATION
- ----------------------------------------

    Accounting Implications

     The ACC regulates TEP's utility business.  TEP generally uses the same
accounting policies and practices used by nonregulated companies for
financial reporting under generally accepted accounting principles.
However, sometimes these principles, such as FAS 71, require special
accounting treatment for regulated companies to show the effects of
regulation.  For example, in setting TEP's retail rates, the ACC may not
currently allow TEP to charge its customers to recover certain expenses but,
instead, require that these charges be charged to customers in the future.  
In this situation, FAS 71 requires TEP not to show these expenses on its 
current income statements but to "defer" these items and show them as 
"regulatory assets" on the balance sheet until TEP is allowed to charge its 
customers.  TEP then amortizes these items to the income statement as 
charges are billed to customers.  Similarly, certain items of revenue may 
be deferred as regulatory liabilities which are also eventually amortized 
to the income statement.

     We have recorded regulatory assets and liabilities in our balance
sheets in accordance with FAS 71.  A regulated company must satisfy certain
conditions to apply the accounting policies and practices of FAS 71. These
conditions include:

  -  an independent regulator sets rates;
  -  the regulator sets the rates to cover specific costs of delivering
     service; and
  -  the service territory lacks competitive pressures to reduce rates 
     below the rates set by the regulator.

We periodically assess whether we continue to meet these conditions.  If we
were required to stop applying FAS 71 to all or a portion of TEP's regulated
utility operations, we would write off the related balances of TEP's
regulatory assets and liabilities as a charge in our income statement.  This
means our earnings would be reduced by the net amount of regulatory assets
and liabilities, after applicable deferred income taxes.  Based on the
balances of TEP's regulatory assets and liabilities at March 31, 1998, if we
stopped applying FAS 71 to all of TEP's regulated operations, we would
record an extraordinary loss of approximately $178 million, net of the
related deferred income tax benefit of $99 million.  While our cash flows
may be affected by regulatory orders and market conditions, our cash flows
would not be affected if we stopped applying FAS 71.

     If we stop applying FAS 71, we would need to evaluate the likelihood
that we could recover the cost of TEP's electric plant in the marketplace
using the criteria in FAS 121.  If undiscounted cash flows are less than the
carrying value of those assets, then we would need to write-off as an
expense a portion of those plant assets to reflect their current market
value.  We cannot predict if we would write-off any plant assets as a result
of applying FAS 121.

  Recent Events That May Impact TEP's Application of FAS 71

     Legislative and other regulatory measures are being developed in
various states to deregulate the electric generation business.  The SEC and
the EITF have been reviewing whether electric utilities should stop applying
FAS 71 to the business transactions in states where deregulation is
occurring.  In general, the EITF consensus states that utilities must stop
accounting for the electric generation portion of their business under FAS
71 when a deregulation plan is in place and its terms are known.  The EITF
also concludes that utilities do not need to write off regulatory assets
(including those related to generation) if the cash flow stream from
regulated rates includes recovery of the regulatory assets. We are uncertain
how the EITF consensus will impact TEP as deregulation activities develop in
Arizona.  In the future, we may need to stop applying FAS 71 to the electric
generation portion of TEP's business, even if we believe that we will
recover the full amount of our costs under the ACC competition phase-in
plan.  Approximately 55% of TEP's net regulatory assets on the balance sheet
relate to electric generation.

     In December 1996, the ACC adopted rules that, if implemented as
adopted, would introduce retail electric competition in Arizona. See
Competition, Retail for a discussion of the ACC competition rules.  Hearings
were held in February 1998 to resolve issues relating to stranded cost
recovery.  On May 6, 1998, the Hearing Officer issued a Proposed Order.  The
Proposed Order indicates that the Affected Utilities should have a
reasonable opportunity to recover 100% of their stranded costs and gives 
the Affected Utilities three options for stranded cost recovery.
However, it is unclear whether Affected Utilities would be able to recover
100% of their stranded costs.  See Competition, Retail for a discussion of
the Proposed Order.

      TEP is currently evaluating the financial implications if the Proposed
Order is adopted, including whether we would be able to continue to apply
FAS 71 to the generation portion of TEP's business.  TEP anticipates filing
exceptions to the Proposed Order.  We cannot determine when the ACC will
hold an open meeting to consider the Proposed Order or whether the ACC will
approve, modify or reject the Proposed Order.  If the Proposed Order is
adopted, TEP would have 30 days to file its choice of one of the three
options for stranded cost recovery.  At the same time, TEP would need to
file an implementation plan, including its estimate of stranded costs
related to generation and regulatory assets.  Until such time, we believe
that any estimate of unrecoverable amounts of stranded costs would be highly
speculative.

     Also in January 1998, the Arizona Legislature proposed legislation
introducing retail electric competition in Arizona.  We cannot predict the
outcome of the proposed legislation or whether the ACC and the Arizona
Legislature will propose other initiatives on electric utility industry
restructuring.  We believe, based on previous rate orders, that it is likely
that we will recover the full costs of our investments in electric utility
plant and regulatory assets. The ACC's final order may require us to stop
applying FAS 71 to the electric generation portion of TEP's utility
operations.  If the order provides less than full recovery of stranded
costs, significant write-offs of assets may occur as discussed above.

     Based on the activities that have occurred to date, TEP believes it
continues to meet the criteria to apply FAS 71 to its regulated activities.
However, we cannot predict the outcome of the deregulation efforts in
Arizona described above.


INVESTMENTS IN ENERGY-RELATED VENTURES
- --------------------------------------

      MEH Corporation (MEH), a wholly-owned subsidiary of UniSource Energy,
owns 100% of the stock of four subsidiaries.  We established these
subsidiaries to pursue various unregulated energy-related investment
opportunities:

     1) Nations Energy Corporation (Nations Energy) develops independent
     power projects worldwide.

     2) Millennium Energy Holdings, Inc. (Millennium) holds a 50% interest
     in New Energy Ventures, L.L.C. (NEV).  NEV, a buyer's agent, provides
     electric load aggregation and advisory services to retail purchasers of
     electric energy.  As of March 31, 1998, NEV had contracts to purchase
     energy for and sell energy to customers principally in California with
     a combined electrical demand of more that 1,000 MW.  NEV began serving
     its California customers on March 31, 1998 when the California retail
     electricity market opened to competition.

     3) Advanced Energy Technologies, Inc. (AET) holds a 50% interest in
     Global Solar Energy, L.L.C. (Global Solar), a manufacturer of thin-film
     photovoltaic cells.

     4) Southwest Energy Solutions, Inc. (SES) provides ancillary energy
     services to electric consumers.  SES owns 100% of the stock of SWPP
     Investment Company (SWPP) and SWPP International, Ltd. (SWPPI), which
     hold ownership interests in businesses engaged in the manufacture and
     sale of concrete power poles.

      Our investments in the energy-related ventures described above
(included in Investments and Other Property in UniSource Energy's
consolidated balance sheet) comprise less than 1% of total assets.  However,
the net loss related to these start-up operations totaled $4.0 million for
the first quarter of 1998.  This loss is included in the Other Income
(Deductions) section on UniSource Energy's income statement.  Almost all of
MEH's loss in the first quarter of 1998 occurred at NEV.  The California
electricity market was originally scheduled to open to competitors such as
NEV on January 1, 1998.  However, technical matters related to the
California Independent System Operator and the California Power Exchange
delayed the opening of the electricity market until March 31, 1998.
Therefore, NEV could not make retail power sales in California in the first
quarter.  Although the delays in establishment of the competitive market
caused losses at NEV in the first quarter, and may continue to cause losses
in the second quarter, NEV expects losses to decline as more customers are
added throughout the year.

      Depending on the nature of future investment opportunities, we expect
to make additional investments in these subsidiaries and in other energy-
related ventures.  Over time, investments in unregulated energy-related
ventures may have a material impact on our profitability and cash flows.
The ACC Holding Company Order requires that the capitalization (debt and
equity) of TEP's sister companies not exceed 30% of TEP's capitalization
unless otherwise approved by the ACC.


DIVIDENDS ON COMMON STOCK
- -------------------------

    UniSource Energy

      UniSource Energy's ability to pay dividends depends upon cash flow
from TEP and MEH.  TEP comprises substantially all of UniSource Energy's
assets.  As described below, TEP is currently unable to declare or pay
dividends.  TEP has not declared or paid a dividend on common stock since
1989.  Until TEP is able to pay dividends to UniSource Energy, UniSource
Energy will probably be unable to declare or pay dividends on its Common
Stock.

    TEP

      Five outstanding issues of First Mortgage Bonds (aggregating $184
million in principal amount) prevent TEP from paying dividends until
specific cash flow coverage and retained earnings tests are met.  As of
March 31, 1998, TEP met the cash flow coverage test, but did not meet the
retained earnings test, which requires positive retained earnings.  These
covenants will apply until these First Mortgage Bonds have been paid or
redeemed or the applicable mortgage indentures have been amended.  The
latest maturity of these First Mortgage Bonds is in 2003.  To amend these
bonds would require approval by 75% of all First Mortgage Bonds holders.
During 1998, TEP plans to refinance or retire all of the First Mortgage
Bonds that prohibit the payment of dividends.  See Financing Developments,
TEP First Mortgage Bonds, below.

      TEP's Credit Agreement allows TEP to pay dividends if it maintains
compliance with the agreement and meets certain financial covenants,
including a covenant that requires TEP to maintain a minimum level of net
worth.  As of March 31, 1998, the required minimum net worth was $166.4
million.  See Financing Developments, TEP Credit Agreement, below.  As of
March 31, 1998, TEP is in compliance with the terms of the Credit Agreement.

      The ACC Holding Company Order states that TEP may not pay dividends to
UniSource Energy in excess of 75% of its earnings until TEP's equity ratio
equals 37.5% of total capital (excluding capital lease obligations).  As of
March 31, 1998, TEP's equity ratio was 15%.

      In addition to these restrictive covenants, the Federal Power Act
states that dividends shall not be paid out of funds properly included in
the capital account.  Although the terms of the Federal Power Act provisions
are unclear, we believe that there is a reasonable basis to pay dividends 
from current year earnings.  We are continuing to evaluate this situation.

EARNINGS
- --------

     UniSource Energy recorded a net loss of $7.0 million in the first
quarter of 1998 compared with net income of $11.5 million in the first
quarter of 1997.  The net loss per average share of Common Stock was $0.22
for the first quarter of 1998 compared with net income per average share of
Common Stock of $0.36 for the first quarter of 1997.  We would have recorded
a net loss of $0.3 million or $0.01 per share in the first quarter of 1997
excluding the recognition of tax benefits and other one-time adjustments.
The major reasons for the variance between the results for the first quarter
of 1998 and the adjusted results for the first quarter of 1997 were:

  -higher losses from investments in unregulated energy-related businesses,
  -lower non-cash regulatory revenues, and
  -higher interest expense.


RESULTS OF OPERATIONS
- ---------------------

     Currently, TEP's financial condition and results of operations are the
primary factors affecting the financial condition and results of operations
of UniSource Energy on an annual basis.  We note any fluctuations that are
not primarily due to TEP activities.  All nonutility operating transactions
are reflected in Other Income (Deductions) on the UniSource Energy
Consolidated Statement of Income.

  Utility Sales and Revenues

     Comparisons of TEP's kilowatt-hour sales and electric revenues are
shown below:

<TABLE>
<CAPTION>
                                                             Increase/(Decrease)
                                                             -------------------
Three Months Ended March 31            1998         1997      Amount    Percent
- ---------------------------          ---------   ----------   -------   --------
<S>                                 <C>         <C>          <C>        <C>
Electric kWh Sales (000):
      Retail Customers                1,790,309   1,622,441   167,868     10.3%
      Sales for Resale                  850,132     715,187   134,945     18.9
                                      ---------   ---------   -------     
             Total                    2,640,441   2,337,628   302,813     13.0

Electric Revenues (000):
      Retail Customers                 $138,149    $129,937    $8,212      6.3%
      Amortization of MSR Option
             Gain Regulatory Liability        0       5,013    (5,013)  (100.0)
      Sales for Resale                   22,854      19,331     3,523     18.2
                                       --------    --------   -------
             Total                     $161,003    $154,281    $6,722      4.4
</TABLE>


     TEP's kWh sales to retail customers increased by 10.3% during the first
quarter of 1998 compared to the first quarter of 1997.  This increase is
because: 1) our average number of retail customers increased 1.8%; 2) the
weather was cooler in February and March of 1998 than in 1997, which
increased the electric heating load; 3) sales to our mining customers
increased after contract amendments went into effect in mid-1997; and 4)
reported sales in 1998 were impacted by various billing adjustments.

     Revenues from sales to retail customers increased by 6.3% in the first
quarter of 1998 compared to the same period in 1997 because of the higher
kWh sales.  This increase in retail revenues did not correspond exactly to
the increase in kWh sales as a result of new long-term contracts with large
commercial, industrial and mining customers.  These contracts went into
effect after the first quarter of 1997 and have lower rates than the prior
contracts.

     Our kWh sales for resale increased by 18.9% and the related revenues
grew by 18.2% in the first quarter of 1998 relative to the same period in
1997.  There were higher economy energy sales in 1998 because cooler weather
in the southwestern United States during the first quarter resulted in
increased use of electricity for heat.

     TEP's non-cash revenue from the Amortization of the MSR Option Gain
Regulatory Liability was $5.0 million lower in the first quarter of 1998
compared to the same period in 1997.  This regulatory liability was fully
amortized in May 1997.  If we exclude the revenue from the MSR Option Gain
amortization, total operating revenues were 7.9% higher in the first quarter
of 1998 than the first quarter of 1997.

  Operating Expenses

     Fuel and Purchased Power expense increased by 6% in the first quarter
of 1998 compared with the same period in 1997 because of the increased sales
we discussed above.  Savings from the new Springerville coal contract helped
reduce the cost per kWh sold to 1.83 cents in the first quarter of 1998 from
1.95 cents in the same period in 1997.

     If we exclude the growth in Fuel and Purchased Power expense, other
operating expenses increased in total by only 1% in the first quarter of
1998 over the same period in 1997.  Other Operations expense was $2.9
million higher in the first quarter of 1998 than during the first quarter of
1997.  This change was mainly due to increases in salaries, pension and
benefit expense.  Employee Severance Plan Expense of $2.9 million in 1997
represents VSP costs for non-pension post-retirement benefits that we
recognized in the first quarter.

 Other Income (Deductions)

     Compared with the first quarter of 1997, 1998 income tax benefits
included in Other Income (Deductions) decreased by $15.2 million and $16.1
million for UniSource Energy and TEP, respectively.  This change is due
mainly to lower recognition of Net Operating Loss (NOL) benefit.  UniSource
Energy and TEP recognized $14.3 million of NOL benefit in the first quarter
of 1997 and none in the first quarter of 1998.  As of December 31, 1997,
both UniSource Energy and TEP had recorded the amount of prior period NOL
benefit that we expect to use on future income tax returns.  At the present
time, we are not able to estimate future additional amounts of NOL benefit
that we may recognize in the income statements of either UniSource Energy or
TEP.  This is because there are still open tax years for which there may be
additional assessments and because federal and state NOL carryforwards have
varying expiration dates.  We do not expect to recognize additional amounts
of NOL benefit until such items are resolved.

     The unregulated energy subsidiaries owned by MEH reported a net loss of
$4.0 million for the first quarter of 1998, compared with a net loss of $0.9
million for the first quarter of 1997.  The delayed implementation of
California's competitive electricity market until March 31, 1998 and other
subsidiary development activities affected the financial results for these
businesses.  See Investments in Energy-Related Ventures.

  Interest Expense

     Interest expense increased by $4.1 million in the first quarter of 1998
relative to the same period in 1997.  We had higher letter of credit fees in
TEP's new Credit Agreement, as well as higher interest rates from the
refinancing of certain variable rate debt obligations with fixed rate debt
obligations.  (See Financing Developments, TEP Sale of Bonds, below).  These
refinancings benefited TEP by extending debt maturities and reducing the
risk from changes in variable interest rates.

 EVENTS AFFECTING FUTURE RESULTS OF UTILITY OPERATIONS

  TEP Generating Resources

     On May 1, 1998, TEP allowed a lease to expire on three internal
combustion turbine generating units having a combined generating capacity of
96 MW.  As a result, TEP may need to purchase firm capacity during the
summer months to meet operating reserve requirements.  TEP will re-evaluate
the need for additional peaking generation resources.  Firm capacity
purchases needed to replace the expired leased capacity are not expected to
have a material negative impact on UniSource Energy or TEP financial
results.

LIQUIDITY AND CAPITAL RESOURCES
- -------------------------------

  CASH FLOWS

     UniSource Energy

     Cash and cash equivalents increased by $15.2 million, or 14%, from the
March 31, 1997 ending balance of $106.6 million to the March 31, 1998 ending
balance of $121.8 million.  For the twelve-month period ended March 31,
1998, net cash flows from operating activities exceeded the cash needed for
investing and financing activities.

     Net cash flows from operating activities decreased in aggregate by
$19.1 million in the first three months of 1998 compared with the same
period in 1997.  This decrease was due mainly to the payment of $10.0
million in contract termination fees to the Springerville coal supplier in
the first quarter of 1998 (see Note 6 of Notes to Condensed Consolidated
Financial Statements--Rate Matters).  In addition to the contract
termination fees, we had higher cash outflows for the following: 1) Other
Operations and Maintenance Costs increased $4.8 million; 2) Interest Paid
increased $3.8 million; 3) Capital Lease Interest Paid increased $3.8
million; and 4) Wages Paid increased $3.0 million.  These increases in cash
outflows were partially offset by a $6.8 million increase in cash receipts
from retail and wholesale customers.

     Total net cash outflows from investing activities increased by $7.0
million during the first quarter of 1998 compared with the same period in
1997.  A $4.7 million increase in Loans and Investments to Joint Ventures
and a $1.4 million increase in Construction Expenditures were the primary
reasons for this change.

     Total net cash outflows from financing activities decreased by $25.3
million in the first quarter of 1998 compared with the same period in 1997.
In the first quarter of 1997, TEP repaid the $31 million balance outstanding
on its Renewable Term Loan.  The new bond issuance activity described below
in Financing Developments, TEP Sale of Bonds had no impact on net cash flow
in the first quarter of 1998.  This is because the cash from the bonds
issued is being held in trust until the 1981 Apache Series A and Series B
bonds are redeemed on May 15, 1998.

     Our consolidated cash balance, including cash equivalents, at May 6,
1998 was approximately $104 million.  Of this amount, $65 million was held
by TEP and its wholly-owned subsidiaries.  We invest cash balances in high-
grade money market securities with an emphasis on preserving the principal
amounts invested.

     During 1998 and beyond, our sources of cash will be primarily dividends
from TEP (when allowed) and proceeds from sales of securities.  Potential
cash needs may include funds for subsidiaries, funds to meet debt
obligations and funds to pay dividends to shareholders.  See Dividends on
Common Stock and Financing Developments, UniSource Energy for details on
these sources and uses of funds.

     TEP

     Cash and cash equivalents decreased by $23.5 million, or 22%, from the
March 31, 1997 ending balance of $106.6 million to the March 31, 1998 ending
balance of $83.2 million.  This decrease is due to the transfer of MEH's
cash balance of $45.4 million, included in Cash Flows from Investing
Activities in TEP's Statement of Cash Flows for the quarter ended March 31,
1998.  See Note 3 of Notes to the Condensed Consolidated Financial
Statements--Transfer of MEH from TEP to UniSource Energy.

     TEP expects to generate enough cash flow during 1998 to fund continuing
operating activities and construction expenditures.  Actual cash flows may
vary from projections if there are changes in wholesale revenues, changes in
short-term interest rates or other factors.  If cash flows were to fall
short of our expectations, TEP would use existing cash balances and, if
necessary, borrow from the Revolving Credit Facility.  At May 6, 1998, there
was no outstanding balance due under the Revolving Credit Facility.

  FINANCING DEVELOPMENTS

    TEP Sale of Bonds

     On March 17, 1998, the Apache County, Arizona Industrial Development
Authority issued $200 million of new bonds for the benefit of TEP.  These
bonds are included in Long-Term Debt on TEP's balance sheet.  The proceeds
will be used on May 15, 1998 to redeem the 1981 Series A Apache County
Pollution Control Revenue Bonds due 2020 ($100 million) and the 1981 Series
B Apache County Pollution Control Revenue Bonds due 2021 ($100 million).
Until the previously issued bonds are redeemed, they are included in the
balance sheet as Current Maturities of Long-Term Debt.  The proceeds from
the issuance of the new bonds are recorded in the balance sheet under
Current Assets as Long-Term Debt Proceeds Held by Trustee.  The new bonds,
which are unsecured, were issued in three series: Series A Pollution Control
Revenue Bonds ($83.7 million) bears interest at 5.85% and matures in 2028;
Series B Pollution Control Revenue Bonds ($99.8 million) bears interest at
5.875% and matures in 2033; and Series C Industrial Development Revenue
Bonds ($16.5 million) bears interest at 5.85% and matures in 2026.

     The 1981 Series A Apache Bonds are supported by a letter of credit.
This LOC is collateralized by Second Mortgage Bonds under the terms of TEP's
Credit Agreement.  When TEP redeems these bonds, the Letter of Credit
Facility will decrease from $444 million to $341 million and the Second
Mortgage Bonds collateralizing those LOCs will decrease by $103 million.
The 1981 Series B Apache Bonds are supported by a letter of credit outside
of the Credit Agreement.  This LOC is collateralized by First Mortgage
Bonds.  When TEP redeems these bonds, this will eliminate the supporting LOC
and retire $103 million of First Mortgage Bonds collateralizing the LOC.

    TEP Credit Agreement

     As of March 31, 1998 and as of May 6, 1998, TEP had no borrowings
outstanding under its $100 million Revolving Credit Facility.

     As described above in TEP Sale of Bonds, after TEP redeems the 1981
Series A Apache County Pollution Control Revenue Bonds on May 15, 1998, the
amount of its Letter of Credit Facility will be $341 million and the amount
of its total facilities under the Credit Agreement, which includes the
Revolving Credit Facility discussed above, will be $441 million.

     TEP is required by its Credit Agreement to maintain certain financial
covenants including (a) a minimum Consolidated Tangible Net Worth equal to
the sum of $133 million plus 40% of cumulative Consolidated Net Income since
January 1, 1997, (b) a minimum Cash Coverage Ratio ranging from 1.30 in 1998
and gradually increasing to 1.55 in 2002, and (c) a maximum Leverage Ratio
ranging from 7.00 in 1998 and gradually decreasing to 6.20 in 2002.  For the
quarter ended March 31, 1998, TEP was in compliance with each of these
covenants.

    TEP First Mortgage Bonds

     In 1997 the ACC granted authority to TEP to refinance up to $184
million of its First Mortgage Bonds scheduled to mature between 1999 and
2003, as well as any redemption premiums, by issuing new debt and/or equity
securities.  As described below, TEP plans to negotiate and complete these
transactions during 1998.  TEP's objective is to extend maturities and
eliminate certain restrictive covenants contained in the existing First
Mortgage Bonds.

     On April 29, 1998, TEP sent an offering memorandum to registered
holders of its 12.22% First Mortgage Bonds due 2000.  TEP is offering to
exchange existing 12.22% First Mortgage Bonds for an identical amount of new
12.22% Exchange Series First Mortgage Bonds due 2000.  With the exception of
a covenant pertaining to the payment of dividends, the new bonds would have
substantially the same terms and conditions as the existing bonds.  The
Exchange Series Bonds are structured to allow TEP to pay dividends.  This
exchange offer expires May 15, 1998 and may be extended or withdrawn by TEP
prior to that time at its discretion.

     During the second quarter of 1998, TEP intends to issue up to $195
million of Second Mortgage Bonds and use the proceeds to redeem all of its
First Mortgage Bonds due in 1999, 2001, 2002, and 2003, as well as any of
the 12.22% First Mortgage Bonds not tendered for exchange as described
above. If TEP redeems the bonds as described above, TEP would eliminate
covenants that currently prohibit it from paying common stock dividends so
long as it has an accumulated earnings deficit (see Dividends on Common
Stock).

     There is no assurance that any of the transactions described above will
be completed.

    UniSource Energy

     UniSource Energy plans to establish a direct stock purchase plan in
1998. Under this plan, we may issue up to 1,000,000 shares of common stock.

     The ACC Holding Company Order states that 60% of the proceeds of any
public equity issuance undertaken by the Company in its first five years of
operations must be used to reduce TEP's debt or add to TEP's equity account.

    UniSource Energy--Loans and Guarantees

     In December 1997, Millennium committed to provide NEV with $20 million
of funding. At NEV's option, the funding can be in the form of additional
equity, preferred equity, guarantees or it can be partially satisfied with
$10 million in loans from Millennium, or a combination of these
alternatives.  At April 30, 1998, NEV had received the following under the
$20 million commitment:

  -Millennium provided $7 million in loans to NEV.
  -UniSource Energy issued guarantees in the aggregate amount of $5 million
   to secure the obligations of NEV to counterparties to energy purchase and
   sale agreements.
  -UniSource Energy also issued a $1 million guarantee to secure the
   obligations of NEV under its Agreement for Services with LG&E Energy
   Marketing, Inc.

As a result of these loans and guarantees, the remaining commitment amount
available was $7 million at April 30, 1998.

     UniSource Energy is the guarantor of $16.65 million of performance
bonds that secure the amounts NEV California owes to the California utility
distribution companies (UDCs) for services provided by the UDCs in
connection with NEV California's sales in the California retail electric
market.  NEV California bills its customers for these UDC charges.


IMPACT OF YEAR 2000 ON COMPUTER SYSTEMS AND APPLICATIONS
- --------------------------------------------------------

      The Company continues to review, test and make modifications to its
computer systems and applications to ensure that its generation,
transmission and distribution facilities will provide uninterrupted service
and that year 2000 transactions can be processed.  We are reviewing our
information systems, the control and embedded systems of TEP's utility plant
(including the units that TEP owns part of but does not operate), as well as
whether major vendors are addressing the problem.  The Company has
identified the major vendors from whom we purchase products or services.  We
are contacting those vendors to determine their plans to correct any
problems they may face with year 2000 compliance and investigate any
potential impact on TEP.  TEP and other electric service providers in the
WSCC are evaluating potential year 2000 risks resulting from interconnected
electric and informational systems.

      At this time we believe that all identified modifications to systems
which the Company operates will be made within the required time frames.
We currently estimate that the year 2000 project costs are not material to
the Company's operating results. We cannot assure the year 2000 compliance
status of systems or parties that the Company does not control.   We cannot
assess the effect on the Company of non-compliance by systems or parties
that the Company does not control.


SAFE HARBOR FOR FORWARD-LOOKING STATEMENTS
- ------------------------------------------

      This Quarterly Report on Form 10-Q contains forward-looking statements
as defined by the Private Securities Litigation Reform Act of 1995.
UniSource Energy and TEP include the following cautionary statements to take
advantage of the safe harbor provisions of the Private Securities Litigation
Reform Act of 1995 for any forward-looking statements made by, or for,
UniSource Energy or TEP in this Quarterly Report on Form 10-Q.  Forward-
looking statements include statements concerning plans, objectives, goals,
strategies, future events or performance and underlying assumptions.  They
include statements which are not statements of historical fact.  Such
forward-looking statements may be identified by the use of words such as
"anticipates," "estimates," "expects," "intends," "plans," "predicts,"
"projects," and similar expressions. UniSource Energy and TEP may
occasionally publish or make available forward-looking statements of this
nature. These cautionary statements and any other cautionary statements
which may accompany the forward-looking statements expressly qualify all
such forward-looking statements, whether written or oral, and whether made
by or for UniSource Energy or TEP.  In addition, UniSource Energy and TEP
disclaim any obligation to update any forward-looking statements to reflect
events or circumstances after the date we make forward-looking statements.

      Forward-looking statements involve risks and uncertainties which could
cause actual results or outcomes to differ materially from those we express
in the forward-looking statements.  We express in good faith the
expectations, beliefs and projections contained in this document.  We
believe we have a reasonable basis to make such statements based on our
examination of historical operating trends, data contained in our records
and other data available from third parties.  However, we cannot assure that
we will achieve our expectations, beliefs or projections.  In addition to
other factors and matters discussed in this document, we believe some of the
important factors that could cause actual results to differ materially from
those we discuss in the forward-looking statements include the following:

1. Effects of restructuring initiatives in the electric industry and other
   energy-related industries.

2. Changes in economic conditions, demographic patterns and weather
   conditions in TEP's retail service area.

3. Changes affecting TEP's cost of providing electrical service including
   changes in fuel costs, generating unit operating performance, interest
   rates, tax laws, environmental laws, and the general rate of inflation.

4. Changes in governmental policies and regulatory actions with respect to
   allowed rates of return, financings, rate structures, and methods of
   establishing rates.

5. Changes affecting the cost of competing energy alternatives, including
   changes in available generating technologies and changes in the cost of
   natural gas.

6. Changes in accounting principles or the application of such principles to
   UniSource Energy, TEP, or any subsidiary.


                        PART II - OTHER INFORMATION

ITEM 1. -- LEGAL PROCEEDINGS
- ------------------------------------------------------------------------------

TAX ASSESSMENTS

     See Note 2 of Notes to Condensed Consolidated Financial Statements, Tax
Assessments.


ITEM 5. - OTHER INFORMATION
- ------------------------------------------------------------------------------

ADDITIONAL FINANCIAL DATA

The following table reflects the ratio of earnings to fixed charges for TEP:

                                          12 Months Ended
                                          ----------------
                                    March 31,        December 31,
                                      1998               1997
                                      ----               ----
Ratio of Earnings to Fixed            1.41               1.39
Charges



ITEM 6. -- EXHIBITS AND REPORTS ON FORM 8-K
- ------------------------------------------------------------------------------

(a)  Exhibits.

     -- See Exhibit Index.

(b)   Reports on Form 8-K.

     -- The Company and TEP have not filed any Current Reports on Form 8-K
          since filing the Form 10-K for 1997.


                                 SIGNATURE


     Pursuant to the requirements of the Securities Exchange Act of 1934,
each registrant has duly caused this report to be signed on its behalf by
the undersigned thereunto duly authorized.  The signature for each
undersigned company shall be deemed to relate only to matters having
reference to such company or its subsidiary.


                                              UNISOURCE ENERGY CORPORATION
                                              -----------------------------
                                                       (Registrant)


Date:  May 13, 1998                                    Ira R. Adler        
                                             ----------------------------------
                                                       Ira R. Adler
                                                  Senior Vice President and
                                                 Principal Financial Officer



                                              TUCSON ELECTRIC POWER COMPANY
                                              -----------------------------
                                                       (Registrant)


Date:  May 13, 1998                                    Ira R. Adler        
                                             ----------------------------------
                                                       Ira R. Adler
                                                 Executive Vice President and
                                                 Principal Financial Officer




                               EXHIBIT INDEX

     4a -  Loan Agreement, dated as of March 1, 1998, between The Industrial
        Development Authority of the County of Apache and TEP relating to
        Pollution Control Revenue Bonds, 1998 Series A (Tucson Electric
        Power Company Project).
     4b -  Indenture of Trust, dated as of March 1, 1998, between The
        Industrial Development Authority of the County of Apache and First
        Trust of New York, National Association, authorizing Pollution
        Control Revenue Bonds, 1998 Series A (Tucson Electric Power Company
        Project).
     4c -  Loan Agreement, dated as of March 1, 1998, between The Industrial
        Development Authority of the County of Apache and TEP relating to
        Pollution Control Revenue Bonds, 1998 Series B (Tucson Electric
        Power Company Project).
     4d -  Indenture of Trust, dated as of March 1, 1998, between The
        Industrial Development Authority of the County of Apache and First
        Trust of New York, National Association, authorizing Pollution
        Control Revenue Bonds, 1998 Series B (Tucson Electric Power Company
        Project).
     4e -  Loan Agreement, dated as of March 1, 1998, between The Industrial
        Development Authority of the County of Apache and TEP relating to
        Industrial Development Revenue Bonds, 1998 Series C (Tucson
        Electric Power Company Project).
     4f -  Indenture of Trust, dated as of March 1, 1998, between The
        Industrial Development Authority of the County of Apache and First
        Trust of New York, National Association, authorizing Industrial
        Development Revenue Bonds, 1998 Series C (Tucson Electric Power
        Company Project).
     11 -  Statement re computation of per share earnings - UniSource Energy.
     12 -  Computation of Ratio of Earnings to Fixed Charges - TEP.
     15a - Letter regarding unaudited interim financial information (Price
        Waterhouse LLP).
     15b - Letter regarding unaudited interim financial information
        (Deloitte &Touche LLP).
     27a - Financial Data Schedule - UniSource Energy.
     27b - Financial Data Schedule - TEP.


<PAGE>

                                                            Appendix C 
               

                               UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION
                          Washington, D.C.  20549


                                 FORM 10-Q

     (Mark One)
        [X]    QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                    THE SECURITIES EXCHANGE ACT OF 1934

                For The Quarterly Period Ended June 30, 1998

                                     OR

        [ ]    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                    THE SECURITIES EXCHANGE ACT OF 1934

          For the transition period from           to          .
                                         ---------    ---------



Commission        Registrant; State of Incorporation;     IRS Employer
File Number       Address; and Telephone Number           Identification Number
- -----------       -----------------------------           ---------------------
1-13739             UNISOURCE ENERGY CORPORATION            86-0786732
                    (An Arizona Corporation)
                    220 West Sixth Street
                    Tucson, AZ  85701
                    (520) 571-4000

1-5924              TUCSON ELECTRIC POWER COMPANY
                    (An Arizona Corporation)
                    220 West Sixth Street
                    Tucson, AZ  85701                       86-0062700
                    (520) 571-4000



     Indicate by check mark whether each registrant (1) has filed all
reports required to be filed by Section 13 or 15(d) of the Securities
Exchange Act of 1934 during the preceding 12 months (or for such shorter
period that the registrant was required to file such reports), and (2) has
been subject to such filing requirements for the past 90 days.
Yes     X     No 
    --------    --------

     At August 7, 1998, 32,147,080 shares of UniSource Energy Corporation's
Common Stock, no par value (the only class of Common Stock), were
outstanding.

     UniSource Energy Corporation is the sole holder of the 32,162,167
shares of the outstanding Common Stock of Tucson Electric Power Company.

This combined Form 10-Q is separately filed by UniSource Energy Corporation and
Tucson Electric Power Company.  Information contained herein relating to Tucson
Electric Power Company is filed by UniSource Energy Corporation and separately
by Tucson Electric Power Company on its own behalf.  Tucson Electric Power
Company makes no representation as to information relating to UniSource Energy
Corporation or its subsidiaries, except as it may relate to Tucson Electric
Power Company.


                               TABLE OF CONTENTS
                                                                           Page
                                                                           ----

Definitions..................................................................iv
Report of Independent Accountants.............................................1
Independent Accountants' Review Report........................................2

                         PART I - FINANCIAL INFORMATION

Item 1.  -- Financial Statements
     UniSource Energy Corporation
         Comparative Condensed Consolidated Statements of Income (Loss).......3
         Comparative Condensed Consolidated Statements of Cash Flows..........4
         Comparative Condensed Consolidated Balance Sheets....................5
     Tucson Electric Power Company
         Comparative Condensed Consolidated Statements of Income .............6
         Comparative Condensed Consolidated Statements of Cash Flows..........7
         Comparative Condensed Consolidated Balance Sheets....................8
     Notes to Condensed Consolidated Financial Statements
     Note 1.  Accounting for the Effects of Regulation........................9
     Note 2.  Tax Assessments................................................10
     Note 3.  Transfer of MEH from TEP to UniSource Energy...................11
     Note 4.  Loans and Guarantees for NEV...................................11
     Note 5.  Long-Term Debt........................................... .....12
     Note 6.  Rate Matters...................................................12
     Note 7.  Income Taxes...................................................13
     Note 8.  New Accounting Standard........................................14
     Note 9.  Reclassifications..............................................14
     Note 10.  Review by Independent Public Accountants......................14

Item 2.  -- Management's Discussion and Analysis of Financial Condition and
Results of Operations
     Overview................................................................15
     Competition
         Retail..............................................................16
         Wholesale...........................................................19
     Shared Savings Proposal.................................................20
     Accounting for the Effects of Regulation................................20
     Investments in Energy Related Affiliates................................21
     Dividends on Common Stock
         UniSource Energy....................................................22
         TEP.................................................................22
     Earnings................................................................22
     Results of Operations
          Utility Sales and Revenues.........................................23
           Operating Expenses................................................24
          Other Income (Deductions)..........................................24
           Interest Expense..................................................25
       Events Affecting Future Results of Utility Operations
           TEP Generating Resources..........................................25
     Liquidity and Capital Resources
       Cash Flows
           UniSource Energy..................................................25
           TEP...............................................................26
       Financing Developments
           TEP Sale of Bonds.................................................26
           TEP Credit Agreement..............................................26
           TEP First Mortgage Bonds..........................................27
           UniSource Energy--Loans and Guarantees............................27
     Impact of Year 2000 on Computer Systems and Applications................28
     Safe Harbor for Forward-Looking Statements..............................28

                          PART II - OTHER INFORMATION

Item 1. -- Legal Proceedings
     Tax Assessments.........................................................30
Item 4. - Submission of Matters to a Vote of Security Holders................30
Item 5. - Other Information
     Directors and Executive Officers of the Registrants.....................30
     Shareholder Proposal Deadline for 1999 Annual Meeting...................31
     Additional Financial Data...............................................31
Item 6.  -- Exhibits and Reports on Form 8-K.................................31
Signature Page...............................................................32
Exhibit Index................................................................33


                                  DEFINITIONS

The abbreviations and acronyms used in the 1998 Second Quarter Form 10-Q are
defined below:


ACC...............   Arizona Corporation Commission.
ADOR..............   Arizona Department of Revenue.
AET...............   Advanced Energy Technologies, Inc., a wholly-owned
                      subsidiary of MEH Corporation.
Affected Utilities   Electric utilities regulated by the ACC, including TEP,
                      Arizona Public Service, Citizens Utilities Company, and
                      several electric cooperatives.
Banks.............   The financial institutions party to the Credit Agreement
                      dated as of December 30, 1997.
Common Stock......   The Company's common stock, without par value.
Company or UniSource 
 Energy...........   UniSource Energy Corporation.
Credit Agreement..   Credit Agreement between TEP and the Banks, dated as of
                      December 30, 1997.
EITF..............   Emerging Issues Task Force of the Financial Accounting
                      Standards Board.
FAS 71............   Statement of Financial Accounting Standards #71:
                      Accounting for the Effects of Certain Types of
                      Regulation.
FAS 101...........   Statement of Financial Accounting Standards #101:
                      Regulated Enterprises - Accounting for the
                      Discontinuation of Application of FAS 71.
FAS 121...........   Statement of Financial Accounting Standards #121:
                      Accounting for the Impairment of Long-Lived Assets and
                      for Long-Lived Assets to be Disposed Of.
FERC..............   Federal Energy Regulatory Commission.
First Collateral Trust
 Bonds............   Bonds issued under the First Collateral Trust
                      Indenture.
First Collateral Trust
 Indenture........   The Indenture, dated as of August 1,
                      1998, of Tucson Electric Power Company to Bank of
                      Montreal Trust Company of the City of New York, as
                      trustee.
First Mortgage
 Bonds............   First mortgage bonds issued under the General First
                      Mortgage.
General First 
 Mortgage.........   The Indenture, dated as of April 1, 1941, of Tucson
                      Gas, Electric Light and Power Company to The Chase
                      National Bank of the City of New York, as trustee, as
                      supplemented and amended.
General Second
 Mortgage.........   The Indenture, dated as of December 1, 1992, of
                      Tucson Electric Power Company to Bank of Montreal Trust
                      Company of the City of New York, as trustee, as
                      supplemented.
Global Solar......   Global Solar Energy, L.L.C., a corporation in which a 50%
                      interest is owned by AET.
Holding Company 
 Order............   ACC Order issued November 25, 1997 granting TEP the
                      authority to organize a public utility holding company.
IDBs..............   Industrial development revenue or pollution control bonds.
IRS...............   Internal Revenue Service.
Irvington.........   Irvington Generating Station.
Irvington Lease...   The leveraged lease arrangement relating to Irvington Unit 
                      4.
ISO...............   Independent System Operator.
ITC...............   Investment Tax Credit.
kWh...............   Kilowatt-hour(s).
LOC...............   Letter of Credit.
MEH...............   MEH Corporation, a wholly-owned subsidiary of UniSource
                      Energy.
Millennium........   Millennium Energy Holdings, Inc., a wholly-owned
                      subsidiary of MEH.
MRA...............   Master restructuring agreement between TEP and certain
                      banks which included the Renewable Term Loan, Revolving
                      Credit and certain replacement reimbursement agreements,
                      which was terminated on December 30, 1997.
MSR...............   Modesto, Santa Clara and Redding Public Power Agency.
MW................   Megawatt(s).
NEV...............   New Energy Ventures, L.L.C., a company in which a 50%
                      interest is owned by Millennium.
NEV California....   NEV California, L.L.C., a wholly-owned subsidiary of NEV.
1994 Rate Order...   ACC Rate Order concerning an increase in TEP's retail base
                      rates and certain regulatory write-offs, issued January
                      11, 1994.
1996 Rate Order...   ACC Rate Order concerning an increase in
                      TEP's retail base rates and the recovery of Springerville
                      Unit 2 costs, issued March 29, 1996.
NOL...............   Net Operating Loss carryforward for income tax purposes.
Renewable Term 
 Loan.............   Credit facility that replaced the Term Loan pursuant to
                      the MRA Sixth Amendment, dated as of November 1, 1994,
                      and effective March 7, 1995, and which was terminated
                      December 30, 1997.
Revolving Credit..   $100 million revolving credit facility entered into under
                      the Credit Agreement between a syndicate of certain of
                      the Banks and TEP.
SEC...............   Securities and Exchange Commission.
Second Mortgage 
 Bonds............   TEP's second mortgage bonds issued under the General
                      Second Mortgage.
SES...............   Southwest Energy Solutions, Inc., a wholly-owned
                      subsidiary of MEH.
Shareholders......   Holders of UniSource Energy Common Stock.
Springerville.....   Springerville Generating Station.
Springerville Coal Handling
 Facilities Leases   Leveraged lease arrangements relating to the coal
                      handling facilities serving Springerville.
Springerville Common
 Facilities......    Facilities at Springerville used in common
                      with Springerville Unit 1 and Springerville Unit 2.
Springerville Common Facilities
  Leases..........   Leveraged lease arrangements relating to an undivided one-
                      half interest in certain Springerville Common Facilities.
Springerville Unit 1
 Leases......        Leveraged lease arrangements relating to
                      Springerville Unit 1, and an undivided one-half interest
                      in certain Springerville Common Facilities and which has
                      been assumed by TEP.
SSP...............   Shared Savings Proposal filed by TEP with the ACC July 9,
                      1997 requesting a 1.1% annual retail rate reduction.
Standard Offer....   Bundled service offered to all consumers in a designated
                      service territory at regulated rates.
SWPP..............   SWPP Investment Company, a wholly-owned subsidiary of SES.
SWPPI.............   SWPP International, a wholly-owned subsidiary of SES.
TEP...............   Tucson Electric Power Company, the principal subsidiary of
                      UniSource Energy.
UniSource Energy..   UniSource Energy Corporation.
 Valencia.........   Valencia Energy Company, previously a wholly owned
                      subsidiary of TEP, merged into TEP on May 31, 1996.
VSP...............   Voluntary Severance Plan offered to TEP employees and
                      implemented in May 1996.
WSCC..............   Western Systems Coordinating Council.



REPORT OF INDEPENDENT ACCOUNTANTS


To the Board of Directors and Stockholders of
UniSource Energy Corporation and
to the Board of Directors of
Tucson Electric Power Company

We have reviewed the accompanying condensed consolidated balance sheet and the
related condensed consolidated statements of income and of cash flows of
UniSource Energy Corporation and its subsidiaries (the Company) and of Tucson
Electric Power Company and its subsidiaries (TEP) as of and for the three-month
and six-month periods ended June 30, 1998.  This financial information is the
responsibility of the Company's and TEP's management.  The financial statements
as of June 30, 1997 were reviewed by other independent accountants whose report
dated February 23, 1998 stated that they were not aware of any material
modifications that should be made to such financial information for it to be in
conformity with generally accepted accounting principles.

We conducted our review in accordance with standards established by the 
American Institute of Certified Public Accountants.  A review of interim 
financial information consists principally of applying analytical procedures 
to financial data and making inquiries of persons responsible for financial 
and accounting matters.  It is substantially less in scope than an audit
conducted in accordance with generally accepted auditing standards,the 
objective of which is the expression of an opinion regarding the financial
statements taken as a whole.  Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that should
be made to the accompanying financial information as of and for the three-month
and six-month periods ended June 30, 1998 for it to be in conformity with
generally accepted accounting principles.

The financial statements of the Company and of TEP for the year ended December
31, 1997 were audited by other independent accountants whose report dated
February 23, 1998 expressed an unqualified opinion on those statements.



PricewaterhouseCoopers LLP
Phoenix, Arizona
August  4, 1998




INDEPENDENT ACCOUNTANTS' REVIEW REPORT


UniSource Energy Corporation and its Stockholders
Tucson Electric Power Company
220 West Sixth Street
Tucson, Arizona 85701

We have reviewed the condensed consolidated statements of income of UniSource
Energy Corporation and its subsidiaries (the Company) and Tucson Electric Power
Company (TEP) for the three-month and six-month periods ended June 30, 1997 and
cash flows for the six-month period ended June 30, 1997.  These financial
statements are the responsibility of the Company's and TEP's management.

We conducted our review in accordance with standards established by the 
American Institute of Certified Public Accountants.  A review of interim 
financial information consists principally of applying analytical procedures to
financial data and of making inquiries of persons responsible for financial
and accounting matters.  It is substantially less in scope than an audit 
conducted in accordance with generally accepted auditing standards, the 
objective of which is the expression of an opinion regarding the financial 
statements taken as a whole.  Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that should
be made to such condensed consolidated financial statements for them to be in
conformity with generally accepted accounting principles.

We have previously audited, in accordance with generally accepted auditing
standards, the consolidated balance sheets and statements of capitalization of
the Company and TEP as of December 31, 1997 and the related statements of
income, cash flows, and changes in stockholders' equity (deficit) for the year
then ended (not presented herein);and in our report dated February 23, 1998, we
expressed an unqualified opinion on those consolidated financial statements. In
our opinion, the information set forth in the accompanying condensed
consolidated balance sheets as of December 31, 1997 is fairly stated, in all
material respects, in relation to the consolidated balance sheets from which
they have been derived.



DELOITTE & TOUCHE LLP
Tucson, Arizona
February 23, 1998


                       PART I - FINANCIAL INFORMATION

Item 1.  FINANCIAL STATEMENTS
- -----------------------------------------------------------------------------

The weather causes seasonal fluctuations in UniSource Energy's sales. As a
result, quarterly results are not indicative of annual operating results. The
quarterly financial statements that follow are unaudited but reflect all
normal recurring accruals and other adjustments which we believe are
necessary for a fair presentation of the results for the interim periods
presented. Also see Item 2. - Management's Discussion and Analysis of
Financial Condition and Results of Operations.  This quarterly report should
be reviewed in conjunction with the Company's 1997 Form 10-K.

UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS)

                                                       Three Months Ended
                                                             June 30,
                                                         1998       1997
                                                     -Thousands of Dollars-
Operating Revenues
 Retail Customers                                     $150,652    $159,249
 Amortization of MSR Option Gain Regulatory Liability        -       3,092
 Sales for Resale                                       28,951      20,629
                                                      ---------   ---------
    Total Operating Revenues                           179,603     182,970
                                                      ---------   ---------
Operating Expenses
 Fuel and Purchased Power                               56,693      51,493
 Capital Lease Expense                                  26,558      26,388
 Amortization of Springerville Unit 1 Allowance         (7,630)     (7,010)
 Other Operations                                       27,130      28,087
 Maintenance and Repairs                                 8,431      11,384
 Depreciation and Amortization                          22,883      21,445
 Taxes Other Than Income Taxes                          12,634      13,093
 Income Taxes                                            3,038       4,260
                                                      ---------   ---------
    Total Operating Expenses                           149,737     149,140
                                                      ---------   ---------
      Operating Income                                  29,866      33,830
                                                      ---------   ---------

Other Income (Deductions)
 Income Taxes                                            3,016      11,385
 Reversal of Loss Provision                                  -      10,154
 Interest Income                                         3,524       2,778
 Unregulated Energy Businesses - Net                    (5,649)        488
 Other                                                   1,134      (1,341)
                                                      ---------   ---------
    Total Other Income (Deductions)                      2,025      23,464
                                                      ---------   ---------

Interest Expense
 Long-Term Debt                                         19,792      16,660
 Interest Imputed on Losses Recorded at Present Value    8,545       8,175
 Other                                                   2,496       2,558
                                                      ---------   ---------
    Total Interest Expense                              30,833      27,393
                                                      ---------   ---------

Net Income (Loss)                                     $  1,058    $ 29,901
                                                      =========   =========


Average Shares of Common Stock Outstanding (000)        32,138      32,138
                                                      =========   =========

Basic and Diluted Earnings per Share                  $   0.03    $   0.93
                                                      =========   =========



See Notes to Condensed Consolidated Financial Statements.

UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS)

                                                         Six Months Ended
                                                             June 30,
                                                         1998       1997
                                                     -Thousands of Dollars-
Operating Revenues
 Retail Customers                                     $288,739    $289,186
 Amortization of MSR Option Gain Regulatory Liability        -       8,105
 Sales for Resale                                       51,805      39,960
                                                      ---------   ---------
    Total Operating Revenues                           340,544     337,251
                                                      ---------   ---------
Operating Expenses
 Fuel and Purchased Power                              105,093      97,139
 Capital Lease Expense                                  52,336      52,664
 Amortization of Springerville Unit 1 Allowance        (15,261)    (14,019)
 Other Operations                                       53,428      54,383
 Maintenance and Repairs                                19,155      21,615
 Depreciation and Amortization                          45,446      43,219
 Taxes Other Than Income Taxes                          25,560      25,718
 Income Taxes                                            1,101       1,912
                                                      ---------   ---------
    Total Operating Expenses                           286,858     282,631
                                                      ---------   ---------
      Operating Income                                  53,686      54,620
                                                      ---------   ---------

Other Income (Deductions)
 Income Taxes                                            2,385      25,943
 Reversal of Loss Provision                                  -      10,154
 Interest Income                                         5,240       4,487
 Unregulated Energy Businesses - Net                    (9,685)       (444)
 Other                                                   1,944      (1,372)
                                                      ---------   ---------
    Total Other Income (Deductions)                       (116)     38,768
                                                      ---------   ---------

Interest Expense
 Long-Term Debt                                         36,903      30,777
 Interest Imputed on Losses Recorded at Present Value   17,090      16,454
 Other                                                   5,554       4,764
                                                      ---------   ---------
    Total Interest Expense                              59,547      51,995
                                                      ---------   ---------

Net Income (Loss)                                     $ (5,977)   $ 41,393
                                                      =========   =========


Average Shares of Common Stock Outstanding (000)        32,138      32,138
                                                      =========   =========

Basic and Diluted Earnings per Share                  $  (0.19)   $   1.29
                                                      =========   =========


See Notes to Condensed Consolidated Financial Statements.

UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

                                                         Six Months Ended
                                                             June 30,
                                                         1998       1997
                                                     -Thousands of Dollars-
Cash Flows from Operating Activities
  Cash Receipts from Retail Customers                 $293,242    $293,113
  Cash Receipts from Sales for Resale                   51,935      42,635
  Fuel and Purchased Power Costs Paid                  (93,168)    (90,574)
  Wages Paid, Net of Amounts Capitalized               (36,389)    (32,899)
  Payment of Other Operations and Maintenance Costs    (46,763)    (45,359)
  Capital Lease Interest Paid                          (44,594)    (40,774)
  Interest Paid, Net of Amounts Capitalized            (35,157)    (34,777)
  Taxes Paid, Net of Amounts Capitalized               (48,752)    (48,559)
  Interest Received                                      3,959       3,958
  Emission Allowance Inventory Sales                    11,368           -
  Contract Termination Fee Paid                        (10,000)    (30,000)
  Other                                                   (789)        660
                                                      ---------   ---------
    Net Cash Flows - Operating Activities               44,892      17,424
                                                      ---------   ---------

Cash Flows from Investing Activities
  Construction Expenditures                            (38,220)    (33,870)
  Investments in Joint Ventures                        (11,066)     (2,117)
  Other                                                  1,731         980
                                                      ---------   ---------
    Net Cash Flows - Investing Activities              (47,555)    (35,007)
                                                      ---------   ---------

Cash Flows from Financing Activities
  Proceeds from Issuance of Long-Term Debt               2,328      12,312
  Payments on Renewable Term Loan                            -     (31,000)
  Payments to Retire Long-Term Debt                     (2,600)       (500)
  Payments to Retire Capital Lease Obligations          (9,676)     (4,751)
  Other                                                 (1,547)       (568)
                                                      ---------   ---------
    Net Cash Flows - Financing Activities              (11,495)    (24,507)
                                                      ---------   ---------

Net Decrease in Cash and Cash Equivalents              (14,158)    (42,090)
Cash and Cash Equivalents, Beginning of Year           146,256     130,291
                                                      ---------   ---------
Cash and Cash Equivalents, End of Period              $132,098    $ 88,201
                                                      =========   =========

See Notes to Condensed Consolidated Financial Statements.

UNISOURCE ENERGY CORPORATION
SUPPLEMENTAL CONDENSED CONSOLIDATED CASH FLOW INFORMATION


                                                         Six Months Ended
                                                             June 30,
                                                         1998       1997
                                                     -Thousands of Dollars-

Net Income (Loss)                                     $ (5,977)   $ 41,393
Adjustments to Reconcile Net Income (Loss)
   to Net Operating Cash Flows
  Depreciation and Amortization Expense                 45,446      43,219
  Deferred Income Taxes and Investment Tax Credits-Net  (7,816)    (24,280)
  Lease Payments Deferred                               12,350      17,750
  Amortization of Regulatory Assets & Liabilities,
   Net of Interest Imputed on Losses Recorded at
   Present Value                                         1,828      (5,669)
  Deferred Contract Termination Fee                     (8,077)    (30,000)
  Loss (Unremitted Earnings) of Unconsolidated
   Subsidiaries                                         15,689        (909)
  Emission Allowances                                   11,368           -
  Other                                                 (3,214)    (10,490)
  Changes in Assets and Liabilities which Provided
   (Used) Cash Exclusive of Changes Shown Separately
    Accounts Receivable                                (16,850)    (16,314)
    Materials and Fuel                                    (577)     (7,342)
    Accounts Payable                                     1,189       9,113
    Other Current Assets and Liabilities                (2,629)     (2,989)
    Other Deferred Assets and Liabilities                2,162       3,942
                                                      ---------   ---------
Net Cash Flows - Operating Activities                 $ 44,892    $ 17,424
                                                      =========   =========

Non-Cash Financing Activities (these activities do not affect the statements
of cash flows):
The proceeds from the issuance of $200 million of Pollution Control Revenue
Bonds in March 1998 were held in trust and used in May 1998 to redeem $200
million of previously issued bonds. In May 1998, TEP exchanged $46.9 million
of its existing 12.22% First Mortgage Bonds due 2000 for an identical amount
of new 12.22% Exchange Series First Mortgage Bonds.  See Note 5.  Also, the
proceeds from the issuance of $111.8 million of Pollution Control Revenue
Bonds in April 1997 were held in trust and used in June 1997 to redeem $111.8
million of previously issued bonds.


See Notes to Condensed Consolidated Financial Statements.

UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED BALANCE SHEETS

ASSETS
                                                     June 30,  December 31,
                                                       1998        1997
                                                   - Thousands of Dollars -
Utility Plant
  Plant in Service                                  $2,227,912  $2,194,150
  Utility Plant Under Capital Leases                   893,064     893,064
  Construction Work in Progress                         74,786      72,404
                                                    ----------- -----------
    Total Utility Plant                              3,195,762   3,159,618
  Less Accumulated Depreciation and Amortization    (1,020,317)   (982,621)
  Less Accumulated Amortization of Capital Leases      (82,937)    (73,728)
  Less Springerville Unit 1 Allowance                 (169,584)   (167,756)
                                                    ----------- -----------
    Total Utility Plant - Net                        1,922,924   1,935,513
                                                    ----------- -----------

Investments and Other Property                          76,694      78,772
                                                    ----------- -----------

Current Assets
  Cash and Cash Equivalents                            132,098     146,256
  Accounts Receivable                                   88,075      71,225
  Materials and Fuel                                    34,954      34,005
  Deferred Income Taxes - Current                       15,268      14,910
  Other                                                 26,455      23,653
                                                    ----------- -----------
    Total Current Assets                               296,850     290,049
                                                    ----------- -----------

Deferred Debits - Regulatory Assets
  Income Taxes Recoverable Through Future Rates        165,633     170,034
  Deferred Springerville Common Facility Costs          56,952      58,222
  Deferred Springerville Contract Termination Fee       46,154      48,077
  Deferred Springerville Unit 2 Costs                    6,944      11,590
  Deferred Lease Expense                                10,382      11,571
  Other Regulatory Assets                               11,672      11,089
Deferred Debits - Other                                 19,690      19,492
                                                    ----------- -----------
    Total Deferred Debits                              317,427     330,075
                                                    ----------- -----------
Total Assets                                        $2,613,895  $2,634,409
                                                    =========== ===========


See Notes to Condensed Consolidated Financial Statements.

UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED BALANCE SHEETS

CAPITALIZATION AND OTHER LIABILITIES
                                                     June 30,  December 31,
                                                       1998         1997
                                                   - Thousands of Dollars -
Capitalization
  Common Stock                                      $  638,847  $  638,904
  Accumulated Deficit                                 (428,003)   (422,026)
                                                     ----------- -----------
  Common Stock Equity                                  210,844     216,878
  Capital Lease Obligations                            884,720     890,257
  Long-Term Debt                                     1,211,795   1,215,120
                                                    ----------- -----------
    Total Capitalization                             2,307,359   2,322,255
                                                    ----------- -----------

Current Liabilities
  Current Obligations Under Capital Leases              13,578      14,552
  Current Maturities of Long-Term Debt                   1,225         500
  Accounts Payable                                      36,098      34,909
  Interest Accrued                                      69,284      64,812
  Taxes Accrued                                         24,161      24,397
  Contract Termination Fee Payable                           -      10,000
  Other                                                 15,707      19,051
                                                    ----------- -----------
    Total Current Liabilities                          160,053     168,221
                                                    ----------- -----------

Deferred Credits and Other Liabilities
  Deferred Income Taxes - Noncurrent                    66,892      77,606
  Accumulated Deferred Investment Tax Credits
   Regulatory Liability                                 10,760      11,905
  Emission Allowance Gain Regulatory Liability          31,357      17,591
  Other                                                 37,474      36,831
                                                    ----------- -----------
    Total Deferred Credits and Other Liabilities       146,483     143,933
                                                    ----------- -----------
Total Capitalization and Other Liabilities          $2,613,895  $2,634,409
                                                    =========== ===========


See Notes to Condensed Consolidated Financial Statements.
TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME

The weather causes seasonal fluctuations in TEP's sales. As a result,
quarterly results are not indicative of annual operating results. The
quarterly financial statements that follow are unaudited but reflect all
normal recurring accruals and other adjustments which we believe are
necessary for a fair presentation of the results for the interim periods
presented. Also see Item 2. - Management's Discussion and Analysis of
Financial Condition and Results of Operations.  This quarterly report should
be reviewed in conjunction with the TEP's 1997 Form 10-K.


TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME

                                                       Three Months Ended
                                                            June 30,
                                                         1998       1997
                                                     -Thousands of Dollars-
Operating Revenues
 Retail Customers                                     $150,735    $159,249
 Amortization of MSR Option Gain Regulatory Liability        -       3,092
 Sales for Resale                                       28,951      20,629
                                                      ---------   ---------
    Total Operating Revenues                           179,686     182,970
                                                      ---------   ---------
Operating Expenses
 Fuel and Purchased Power                               56,693      51,493
 Capital Lease Expense                                  26,558      26,388
 Amortization of Springerville Unit 1 Allowance         (7,630)     (7,010)
 Other Operations                                       27,130      28,087
 Maintenance and Repairs                                 8,431      11,384
 Depreciation and Amortization                          22,883      21,445
 Taxes Other Than Income Taxes                          12,634      13,093
 Income Taxes                                            3,038       4,260
                                                      ---------   ---------
    Total Operating Expenses                           149,737     149,140
                                                      ---------   ---------
      Operating Income                                  29,949      33,830
                                                      ---------   ---------

Other Income (Deductions)
 Income Taxes                                            2,076      11,385
 Reversal of Loss Provision                                  -      10,154
 Interest Income                                         3,526       2,850
 Interest Income-Note Receivable from UniSource Energy   2,326           -
 Other                                                   1,029        (925)
                                                      ---------   ---------
    Total Other Income (Deductions)                      8,957      23,464
                                                      ---------   ---------

Interest Expense
 Long-Term Debt                                         19,792      16,660
 Interest Imputed on Losses Recorded at Present Value    8,545       8,175
 Other                                                   2,496       2,558
                                                      ---------   ---------
    Total Interest Expense                              30,833      27,393
                                                      ---------   ---------

Net Income                                            $  8,073    $ 29,901
                                                      =========   =========


See Notes to Condensed Consolidated Financial Statements.


TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME

                                                         Six Months Ended
                                                            June 30,
                                                         1998       1997
                                                     -Thousands of Dollars-
Operating Revenues
 Retail Customers                                     $288,884    $289,186
 Amortization of MSR Option Gain Regulatory Liability        -       8,105
 Sales for Resale                                       51,805      39,960
                                                      ---------   ---------
    Total Operating Revenues                           340,689     337,251
                                                      ---------   ---------
Operating Expenses
 Fuel and Purchased Power                              105,093      97,139
 Capital Lease Expense                                  52,336      52,664
 Amortization of Springerville Unit 1 Allowance        (15,261)    (14,019)
 Other Operations                                       53,428      54,383
 Maintenance and Repairs                                19,155      21,615
 Depreciation and Amortization                          45,446      43,219
 Taxes Other Than Income Taxes                          25,560      25,718
 Income Taxes                                            1,101       1,912
                                                      ---------   ---------
    Total Operating Expenses                           286,858     282,631
                                                      ---------   ---------
      Operating Income                                  53,831      54,620
                                                      ---------   ---------

Other Income (Deductions)
 Income Taxes                                              516      25,943
 Reversal of Loss Provision                                  -      10,154
 Interest Income                                         5,242       4,606
 Interest Income-Note Receivable from UniSource Energy   4,626           -
 Other                                                   1,798      (1,935)
                                                      ---------   ---------
    Total Other Income (Deductions)                     12,182      38,768
                                                      ---------   ---------

Interest Expense
 Long-Term Debt                                         36,903      30,777
 Interest Imputed on Losses Recorded at Present Value   17,090      16,454
 Other                                                   5,554       4,764
                                                      ---------   ---------
    Total Interest Expense                              59,547      51,995
                                                      ---------   ---------

Net Income                                            $  6,466    $ 41,393
                                                      =========   =========


See Notes to Condensed Consolidated Financial Statements.


TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

                                                         Six Months Ended
                                                             June 30,
                                                         1998       1997
                                                     -Thousands of Dollars-
Cash Flows from Operating Activities
  Cash Receipts from Retail Customers                 $293,242    $293,113
  Cash Receipts from Sales for Resale                   51,935      42,635
  Fuel and Purchased Power Costs Paid                  (93,168)    (90,574)
  Wages Paid, Net of Amounts Capitalized               (34,765)    (32,899)
  Payment of Other Operations and Maintenance Costs    (43,632)    (45,359)
  Capital Lease Interest Paid                          (44,594)    (40,774)
  Interest Paid, Net of Amounts Capitalized            (35,157)    (34,777)
  Taxes Paid, Net of Amounts Capitalized               (48,690)    (48,559)
  Emission Allowance Inventory Sales                    11,368           -
  Interest Received                                      2,963       3,958
  Contract Termination Fee Paid                        (10,000)    (30,000)
  Other                                                    869         660
                                                      ---------   ---------
    Net Cash Flows - Operating Activities               50,371      17,424
                                                      ---------   ---------

Cash Flows from Investing Activities
  Construction Expenditures                            (38,220)    (33,870)
  Transfer of MEH                                      (45,412)          -
  Investments in Joint Ventures                              -      (2,117)
  Other                                                  1,841         980
                                                      ---------   ---------
    Net Cash Flows - Investing Activities              (81,791)    (35,007)
                                                      ---------   ---------

Cash Flows from Financing Activities
  Proceeds from Issuance of Long-Term Debt               2,328      12,312
  Payments to Retire Long-Term Debt                     (2,600)       (500)
  Payments on Renewable Term Loan                            -     (31,000)
  Payments to Retire Capital Lease Obligations          (9,676)     (4,751)
  Other                                                 (1,686)       (568)
                                                      ---------   ---------
    Net Cash Flows - Financing Activities              (11,634)    (24,507)
                                                      ---------   ---------

Net Decrease in Cash and Cash Equivalents              (43,054)    (42,090)
Cash and Cash Equivalents, Beginning of Year           146,256     130,291
                                                      ---------   ---------
Cash and Cash Equivalents, End of Period              $103,202    $ 88,201
                                                      =========   =========



See Notes to Condensed Consolidated Financial Statements.

TUCSON ELECTRIC POWER COMPANY
SUPPLEMENTAL CONDENSED CONSOLIDATED CASH FLOW INFORMATION


                                                         Six Months Ended
                                                             June 30,
                                                         1998       1997
                                                     -Thousands of Dollars-

Net Income (Loss)                                     $  6,466  $  41,393
Adjustments to Reconcile Net Income (Loss) to Net
   Operating Cash Flows
  Depreciation and Amortization Expense                 45,446     43,219
  Deferred Income Taxes and
   Investment Tax Credits - Net                            745    (24,280)
  Lease Payments Deferred                               12,350     17,750
  Amortization of Regulatory Assets & Liabilities, Net
   of Interest Imputed on Losses Recorded at
   Present Value                                         1,828     (5,669)
  Deferred Contract Termination Fee                     (8,077)   (30,000)
  Unremitted Earnings of Unconsolidated Subsidiaries      (528)      (909)
  Emission Allowances                                   11,368          -
  Interest Income-Note Receivable from UniSource
   Energy                                               (4,626)         -
  Other                                                 (1,404)   (10,490)
  Changes in Assets and Liabilities which Provided
   (Used) Cash Exclusive of Changes Shown Separately
    Accounts Receivable                                (18,327)   (16,314)
    Materials and Fuel                                    (577)    (7,342)
    Accounts Payable                                     2,223      9,113
    Other Current Assets and Liabilities                 1,377     (2,989)
    Other Deferred Assets and Liabilities                2,107      3,942
                                                      ---------   ---------
Net Cash Flows - Operating Activities                 $ 50,371    $ 17,424
                                                      =========   =========

Non-Cash Financing Activities (these activities do not affect the statements
of cash flows):
The proceeds from the issuance of $200 million of Pollution Control Revenue
Bonds in March 1998 were held in trust and used in May 1998 to redeem $200
million of previously issued bonds. In May 1998, TEP exchanged $46.9 million
of its existing 12.22% First Mortgage Bonds due 2000 for an identical amount
of new 12.22% Exchange Series First Mortgage Bonds.  See Note 5.  Also, the
proceeds from the issuance of $111.8 million of Pollution Control Revenue
Bonds in April 1997 were held in trust and used in June 1997 to redeem $111.8
million of previously issued bonds.



See Notes to Condensed Consolidated Financial Statements.

TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED BALANCE SHEETS

ASSETS
                                                     June 30,  December 31,
                                                       1998        1997
                                                   - Thousands of Dollars -
Utility Plant
  Plant in Service                                  $2,227,912  $2,194,150
  Utility Plant Under Capital Leases                   893,064     893,064
  Construction Work in Progress                         74,786      72,404
                                                    ----------- -----------
    Total Utility Plant                              3,195,762   3,159,618
  Less Accumulated Depreciation and Amortization    (1,020,317)   (982,621)
  Less Accumulated Amortization of Capital Leases      (82,937)    (73,728)
  Less Springerville Unit 1 Allowance                 (169,584)   (167,756)
                                                    ----------- -----------
    Total Utility Plant - Net                        1,922,924   1,935,513
                                                    ----------- -----------

Investments and Other Property                          59,422      78,772
                                                   ----------- -----------

Note Receivable from UniSource Energy                   74,759           -
                                                    ---------- -----------
Current Assets

  Cash and Cash Equivalents                            103,202     146,256
  Accounts Receivable                                   88,642      71,225
  Materials and Fuel                                    34,914      34,005
  Deferred Income Taxes - Current                       15,268      14,910
  Other                                                 21,527      23,653
                                                    ----------- -----------
    Total Current Assets                               263,553     290,049
                                                    ----------- -----------

Deferred Debits - Regulatory Assets
  Income Taxes Recoverable Through Future Rates        165,633     170,034
  Deferred Springerville Common Facility Costs          56,952      58,222
  Deferred Springerville Contract Termination Fee       46,154      48,077
  Deferred Springerville Unit 2 Costs                    6,944      11,590
  Deferred Lease Expense                                10,382      11,571
  Other Regulatory Assets                               11,672      11,089
Deferred Debits - Other                                 19,690      19,492
                                                    ----------- -----------
    Total Deferred Debits                              317,427     330,075
                                                    ----------- -----------
Total Assets                                        $2,638,085  $2,634,409
                                                    =========== ===========










See Notes to Condensed Consolidated Financial Statements.
TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED BALANCE SHEETS

CAPITALIZATION AND OTHER LIABILITIES
                                                     June 30,  December 31,
                                                       1998        1997
                                                   - Thousands of Dollars -
Capitalization
  Common Stock                                      $  645,660  $  645,261
  Capital Stock Expense                                 (6,357)     (6,357)
  Accumulated Deficit                                 (415,560)   (422,026)
                                                    ----------- -----------
  Common Stock Equity                                  223,743     216,878
  Capital Lease Obligations                            884,720     890,257
  Long-Term Debt                                     1,211,795   1,215,120
                                                    ----------- -----------
    Total Capitalization                             2,320,258   2,322,255
                                                    ----------- -----------

Current Liabilities
  Current Obligations Under Capital Leases              13,578      14,552
  Current Maturities of Long-Term Debt                   1,225         500
  Accounts Payable                                      36,414      34,909
  Interest Accrued                                      69,284      64,812
  Taxes Accrued                                         24,141      24,397
  Contract Termination Fee Payable                           -      10,000
  Other                                                 15,693      19,051
                                                    ----------- -----------
    Total Current Liabilities                          160,335     168,221
                                                    ----------- -----------

Deferred Credits and Other Liabilities
  Deferred Income Taxes - Noncurrent                    77,985      77,606
  Accumulated Deferred Investment Tax Credits
   Regulatory Liability                                 10,760      11,905
  Emission Allowance Gain Regulatory Liability          31,357      17,591
  Other                                                 37,390      36,831
                                                    ----------- -----------
    Total Deferred Credits and Other Liabilities       157,492     143,933
                                                    ----------- -----------
Total Capitalization and Other Liabilities          $2,638,085  $2,634,409
                                                    =========== ===========






See Notes to Condensed Consolidated Financial Statements.



NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
- -----------------------------------------------------------------------

NOTE 1.  ACCOUNTING FOR THE EFFECTS OF REGULATION
- -------------------------------------------------

  Accounting Implications

     The ACC regulates TEP's utility business.  TEP generally uses the
same accounting policies and practices used by nonregulated companies
for financial reporting under generally accepted accounting principles.
However, sometimes these principles, such as FAS 71, require special
accounting treatment for regulated companies to show the effect of
regulation.  For example, in setting TEP's retail rates, the ACC may
not currently allow TEP to charge its customers to recover certain
expenses but; instead, require that these expenses be charged to
customers in the future.  In this situation, FAS 71 requires that TEP
not show these expenses on its current income statements but "defer"
these items and show them as "regulatory assets" on the balance sheet
until TEP is allowed to charge its customers.  TEP then amortizes these
items to the income statement as charges are billed to customers.
Similarly, certain items of revenue may be deferred as regulatory
liabilities, which also are eventually amortized to the income
statement.

     We have recorded regulatory assets and liabilities in our balance
sheets in accordance with FAS 71.  A regulated company must satisfy
certain conditions to apply the accounting policies and practices of
FAS 71.  These conditions include:

  - an independent regulator sets rates;
  - the regulator sets the rates to cover specific costs of delivering
service; and
  - the service territory lacks competitive pressures to reduce rates
below the rates set by the regulator.

     We periodically assess whether we continue to meet these
conditions.  If we were required to stop applying FAS 71 to all or a
portion of TEP's regulated utility operations, we would write off the
related balances of TEP's regulatory assets and liabilities as a charge
in our income statement.  In that event, our earnings would be reduced
by the net amount of regulatory assets and liabilities, after
applicable deferred income taxes.  Based on the balances of TEP's
regulatory assets and liabilities at June 30, 1998, if we ceased
applying FAS 71 to all of TEP's regulated operations, we would record
an extraordinary loss of approximately $152 million, net of the related
deferred income tax benefit of $103 million.  While our cash flows may
be affected by regulatory orders and market conditions, our cash flows
would not be affected if we ceased to apply FAS 71.

     If we stop applying FAS 71, we would need to evaluate the
likelihood that we could recover the cost of TEP's electric plant in
the marketplace using the criteria in FAS 121.  If undiscounted cash
flows are less than the carrying value of those assets, then we would
need to write off as an expense a portion of those plant assets to
reflect their current market value.  We cannot predict if we would
write off any plant assets as a result of applying FAS 121.

  Recent Events That May Impact TEP's Application of FAS 71

     Legislative and other regulatory measures are being developed in
various states to deregulate the electric generation business.  The SEC
and the EITF have been reviewing whether electric utilities should stop
applying FAS 71 to the business transactions in states where
deregulation is occurring.  In general, the EITF consensus states that
utilities must stop accounting for the electric generation portion of
their business under FAS 71 when a deregulation plan is in place and
its terms are known.  The EITF also concluded that utilities do not
need to write off regulatory assets (including those related to
generation) if the cash flow stream from regulated rates includes
recovery of the regulatory assets. We are uncertain how the EITF
consensus will impact TEP as deregulation activities develop in
Arizona.  In the future, we may need to stop applying FAS 71 to the
electric generation portion of TEP's business, even if we believe that
we will recover the full amount of our costs under the ACC competition
phase-in plan.  Approximately 55% of TEP's net regulatory assets on the
balance sheet relate to electric generation.

     In December 1996, the ACC adopted rules which would introduce
retail electric competition in Arizona. If implemented as adopted, the
rules would require each "Affected Utility" TEP, Arizona Public Service
Company, Citizens Utilities Company and several cooperatives) to open
its retail service area to competing electric service providers on a
phased-in basis over the period 1999 to 2003.  On August 5, 1998, the
ACC adopted amendments to the rules which, in part, provide a two-year
phase-in schedule in which all retail customers will have access to
competitive generation by January 1, 2001.

     On June 22, 1998, the ACC adopted an order which outlines its
policy for stranded cost recovery by Arizona utilities in a competitive
energy market.  Stranded costs represent costs recoverable by a utility
in a regulated market that would not likely be recovered through the
prices charged for electricity and other services in a competitive
market.  The order allows the Affected Utilities to choose one of the
following two methods for stranded cost recovery:

 (1) Divestiture/Auction Methodology
  - This method requires the sale of all electric generation assets
through an auction by January 1, 2001;
  - Stranded costs are calculated as the difference between book value
of generation assets (including related regulatory assets) and the
proceeds from the sale;
  - 100% of the stranded costs will be recovered over a 10-year period,
including a return on the unamortized balance;
  - All customers of Affected Utilities will pay for the stranded
costs; and
  - Affected Utilities that choose this option must file a divestiture
plan for ACC approval no later than October 1, 1998.

 (2) Transition Revenues Methodology
  - The ACC would determine the revenues necessary to maintain
financial integrity (such as avoiding default under currently existing
financial instruments); and
  - Affected Utilities would recover the determined amount of stranded
costs over a period of ten years.

     The order encourages, but does not require, full divestiture of
generating assets through an auction.  The order states that only those
Affected Utilities choosing divestiture through the Divestiture/Auction
Methodology shall have the opportunity to recover 100% of unmitigated
stranded costs.  TEP must elect one of the two stranded cost recovery
options and file an implementation plan, including its estimate of
stranded costs related to generation and regulatory assets, by August
21, 1998.  The order also specifies that some form of rate cap will be
in place for customers on standard offer electric service during the
transition period.

     TEP will cease to account for its generation operations using FAS
71 at the time the ACC approves a cost recovery plan specific to TEP,
including the specific amount of stranded costs that TEP can recover
and a cost recovery method.  The amount and method of recovery that the
ACC approves for TEP will determine whether write-offs will be incurred
at that time.  The ACC is not expected to approve a final stranded cost
recovery plan for TEP until at least the fourth quarter of 1998.  We
are unable to predict the amount of write-offs, if any, that may be
incurred at that time.

      In  May  1998  the  Arizona State Legislature  approved  and  the
Governor  signed  a  bill regarding retail electric  competition.   The
legislation requires the introduction of customer choice to 20% of each
utility's  retail load by December 31, 1998 and to all  utility  retail
customers by December 31, 2000.  This legislation only relates directly
to  public  power  entities such as SRP; however, the  bill  encourages
broader application of the legislation's principles by the ACC  to  the
state's investor-owned utilities, including TEP, and cooperatives.

      We  cannot  predict the outcome of the legislation or  the  ACC's
retail competition rules.  Additionally, federal legislators introduced
several  retail competition initiatives in Congress which,  if  passed,
could  modify or override the actions taken by the ACC or  the  Arizona
Legislature.

NOTE 2.  TAX ASSESSMENTS
- ------------------------

  Ruling on Arizona Sales Tax Assessments - Coal Sales

     We have received sales tax assessments from the ADOR alleging that
Valencia is liable for sales tax on gross income from coal sales,
transportation and coal-handling services provided to TEP from November
1985 through May 1996.  We have protested these assessments.  In
September 1996, the Arizona Court of Appeals upheld the validity of the
assessment issued for the period November 1985 through March 1990.  In
May 1998, the Arizona Supreme Court remanded the case back to the
Arizona Tax Court to be reheard.  We are also protesting the
assessments for the period April 1990 through May 1996.

     We have previously recorded an expense and a related liability for
the sales taxes and interest that we believe are probable of incurrence
for the period November 1985 through May 1996.  Arizona law generally
requires payment of an assessment prior to pursuing the appellate
process.  We previously paid, under protest, a total of $23 million of
the disputed sales tax assessments.  These payments will be refunded if
we are successful in the appeals process.

     On May 31, 1996, Valencia was merged into TEP.  Because TEP now
acquires coal directly from other companies, we do not believe we are
liable for sales tax computed on a basis similar to the assessments
described above after May 31, 1996.  For periods prior to May 31, 1996,
we continue to record an estimated interest expense on the disputed
assessments.

  Arizona Sales Tax Assessments - Leases

     The ADOR has issued sales tax assessments to some of TEP's lessors
of generation-related facilities and equipment.  The assessments allege
sales tax liability on a component of rents we paid on the
Springerville Unit 1 Leases, the Springerville Common Facilities
Leases, the Irvington Lease and the Springerville Coal Handling
Facilities Lease from August 1, 1988 to June 30, 1997.  Due to
indemnification provisions in the lease agreements, if the ADOR
prevails, we would be required to reimburse the lessors for the sales
taxes that they pay.  We filed an appeal of the assessments in the
Arizona Tax Court in February 1998.  In July 1998, the Arizona Tax
Court ruled against us on the Irvington lease.  We plan to appeal the
Tax Court's decision.

     We have recorded a liability for the probable amount of sales
taxes and interest due as of June 30, 1998.  If the ADOR prevails, we
would need to record an additional expense and related liability.  Even
though it is reasonably possible that the resolution of this issue
could result in approximately $22 million of additional sales tax
expense, we do not believe this outcome is likely.  We do not expect
that the resolution of this assessment will have a material negative
impact on the financial statements. We believe that the ultimate
resolution of this issue will occur over a period of two to four years.

  INCOME TAX ASSESSMENTS

     In February 1998, the IRS issued an income tax assessment for the
1992 and 1993 tax years.  The IRS is challenging our treatment for
income tax purposes of various items relating to the 1992 Financial
Restructuring, including the amount of NOL and ITC generated before
December 1991 that may be used to reduce taxes in future periods.

     Due to the Financial Restructuring, a change in ownership of TEP
occurred for tax purposes in December 1991.  As a result, the use of
the NOL and ITC generated before December 1991 may be limited under the
tax code.  The IRS is challenging our calculation of this limitation.
At June 30, 1998, pre-change federal NOL and ITC carryforwards were
approximately $267 million and $26 million, respectively.  In addition
to the pre-change NOL and ITC which are subject to the limitation, $166
million of federal NOL at June 30, 1998, is not subject to the
limitation.

     Resolution of this matter is not expected to have a material
adverse impact on the financial statements.

NOTE 3.  TRANSFER OF MEH FROM TEP TO UNISOURCE ENERGY
- -----------------------------------------------------

     On January 1, 1998, TEP became a subsidiary of UniSource Energy.
At the same time, TEP transferred MEH to UniSource Energy and received
as consideration from UniSource Energy a $95 million 10-year promissory
note with a yearly interest rate of 9.78%.  Approximately $25 million
of this note represents a gain to TEP.  TEP has not recorded this gain.
Instead, this gain will be reflected as an increase in TEP's common
equity when UniSource Energy pays the principal portion of the note.
The note receivable appears on TEP's consolidated balance sheet but
does not appear on UniSource Energy's consolidated balance sheet
because intercompany balances and transactions are eliminated when
financial statements are consolidated.

     MEH owns Advanced Energy Technologies, Inc., Millennium Energy
Holdings, Inc., Nations Energy Corporation and Southwest Energy
Solutions, Inc.

     The transfer of MEH's cash balance of $45.4 million as part of the
transfer of MEH to UniSource Energy is included in the Cash Flows from
Investing Activities in TEP's cash flow statement for the six months
ended June 30, 1998.

NOTE 4.  LOANS AND GUARANTEES FOR NEV
- -------------------------------------

     In December 1997, Millennium committed to provide NEV with $20
million of funding.  At July 31, 1998, NEV had received the following
under the $20 million commitment:

 - Millennium provided $10 million in loans to NEV.
 - Millennium provided $4 million for NEV preferred equity.
 - UniSource Energy issued guarantees in the aggregate amount of $5.5
million to secure the obligations of NEV to counterparties to energy
purchase and sale agreements.

As a result of these loans and guarantees, the remaining commitment
amount available was $0.5 million at July 31, 1998.

     UniSource Energy is the guarantor of $32.8 million of performance
bonds that secure the amounts NEV California owes to the California
utility distribution companies (UDCs) for services provided by the UDCs
in connection with NEV California's sales in the California retail
electric market.  NEV California bills its customers for these UDC
charges.

     In August 1998, UniSource Energy agreed to guarantee a $10 million
loan that NEV obtained from an unrelated party.  The debt underlying
the guarantee is not due until 1999.

     From September 1997, the inception of Millennium's ownership in
NEV, through June 30, 1998, Millennium recorded approximately $23.8
million of NEV losses.  The amount equals the total funds and
commitments provided by Millennium and UniSource Energy to NEV.
Accounting principles limit the amount of the loss to be recorded by
Millennium to the total amount invested and committed by Millennium and
UniSource Energy.  Under its current obligations, NEV is expected to
continue to incur losses and require additional funds to fulfill its
obligations.  Should Millennium or UniSource Energy provide additional
funding to NEV, the amounts provided would need to be immediately
expensed if NEV has incurred losses in excess of $23.8 million since
September 1997.  NEV is seeking sources other than Millennium and
UniSource Energy to provide necessary funding.  There can be no
assurance that any such financing will be obtained.

NOTE 5.  LONG-TERM DEBT
- -----------------------

     In March 1998, the Apache County, Arizona Industrial Development
Authority issued $200 million of Pollution Control Revenue Bonds and
loaned the proceeds to TEP.  The new bonds, which are unsecured, were
sold in three series: Series A ($83.7 million) bears interest at 5.85%
and matures in 2028; Series B ($99.8 million) bears interest at 5.875%
and matures in 2033; and Series C ($16.5 million) bears interest at
5.85% and matures in 2026.  The proceeds from the issuance of the new
bonds were used in May 1998 to redeem $200 million of previously issued
variable interest rate bonds that would have matured in 2020 and 2021.

     On May 15, 1998, TEP exchanged $46.9 million of its existing
12.22% First Mortgage Bonds due 2000 for an identical amount of new
12.22% Exchange Series First Mortgage Bonds due 2000.  With the
exception of the elimination of a covenant restricting the payment of
dividends, the new bonds have substantially the same terms and
conditions as the existing bonds.

     On August 4, 1998, TEP issued $140 million of First Collateral
Trust Bonds, Series A, and will use the proceeds on September 3, 1998
to redeem all of its First Mortgage Bonds due in 1999, 2001, 2002 and
2003, as well as $31.9 million of 12.22% First Mortgage Bonds due 2000
not tendered for exchange as described above.  The bonds to be redeemed
bear interest at rates ranging from 7.55% to 12.22%.  When TEP redeems
these bonds, covenants that currently prohibit TEP from paying common
stock dividends so long as it has an accumulated earnings deficit will
be eliminated.  Dividends would thereafter be permitted if certain
other, more flexible financial covenants have been met.  The First
Collateral Trust Bonds bear interest at 7.50% and mature in 2008.  The
First Collateral Trust Bonds are secured by an equal aggregate
principal amount of bonds issued under TEP's General First Mortgage and
held by the trustee.

NOTE 6.  RATE MATTERS
- ---------------------

  SHARED SAVINGS PROPOSAL

     On July 9, 1997, TEP filed with the ACC a request for an annual
rate reduction of $6.8 million (or 1.1%) for retail customers.  This
filing is in the form of a Shared Savings Proposal (SSP) which includes
a sharing of cost containment benefits with customers and a reduction
of potentially stranded costs associated with the introduction of
retail electric competition in Arizona.    The SSP identifies $20.8
million in savings allocable to ACC jurisdictional operations.  The
cost containment savings were realized primarily from renegotiated fuel
contracts and a 15% reduction in our workforce from the 1996 Voluntary
Severance Program.  The ACC has not set a date to decide on this
matter.

     The proposed $6.8 million rate reduction represents an equal
sharing between TEP and its customers of $13.6 million of the cost
savings.  The SSP would allow TEP to use the remaining $7.2 million of
cost savings to reduce (mitigate) potentially stranded costs by
accelerating the amortization of Retail Excess Capacity Deferrals.
Retail Excess Capacity Deferrals represent operating and capital costs
associated with Springerville Unit 2 capacity which the ACC did not
allow TEP to recover in rates until the 1994 and 1996 Rate Orders.
These Retail Excess Capacity Deferrals totaled $86.3 million and $88.7
million at June 30, 1998 and December 31, 1997, respectively.  These
deferrals are only reflected in our regulatory calculations.  The
accompanying balance sheets do not include these deferrals as the costs
were expensed when incurred for financial reporting purposes.  The
proposed $7.2 million (after tax) increase in annual amortization
expense for those excess capacity deferrals would decrease the
amortization period from 20 years to 5.6 years as of December 1996.
The proposed increase in amortization expense would be reflected in
TEP's regulatory accounting records but would have no impact on the
expenses included in the financial statements.

  SPRINGERVILLE COAL CONTRACT TERMINATION FEE

     On June 27, 1997, TEP signed an agreement with the coal supplier
for the Springerville Generating Station to terminate the then-existing
coal supply contract and enter into a new, more cost effective contract
with the same supplier.  TEP paid a $50 million termination fee in
three installments:  $30 million paid on June 30, 1997; $10 million
paid on September 30, 1997; and $10 million paid on March 31, 1998.

     TEP asked the ACC, as part of the SSP, to allow the termination
fee to be recorded as a regulatory asset and to be amortized to fuel
expense over the 13-year term of the new agreement.  On July 29, 1997,
the ACC issued an interim accounting order allowing TEP to defer the
$50 million termination fee as a regulatory asset in the balance sheet
until the ACC decides whether the $50 million termination fee should be
recovered through retail rates.  The interim accounting order also
allowed TEP to begin amortizing the termination fee to fuel expense.
If the ACC ultimately disallows recovery, the unamortized portion of
the $50 million termination fee would be expensed immediately.  The ACC
has not set a date to decide on this matter.

NOTE 7.  INCOME TAXES
- ---------------------

     The differences between the income tax expense (benefit) and the
amount obtained by multiplying income before income taxes by the U.S.
statutory federal income tax rate are as follows:

                                            UniSource Energy
                                ---------------------------------------
                                Three Months Ended    Six Months Ended
                                    June 30,              June 30,
                                 1998       1997        1998       1997
                                ---------------------------------------
                                       - Thousands of Dollars -
Federal Income Tax (Benefit)
 Expense at Statutory Rate     $  (923)  $  7,972   $(4,826)  $  6,077
  State Income Tax (Benefit)
   Expense, Net of Federal
   Deduction                      (144)     1,225      (745)       934
  Depreciation Differences
   (Flow Through Basis)          2,419          -     3,459          -
  Capital Loss Carryforwards    (4,463)         -    (4,463)         -
  Investment Tax Credit
   Amortization                   (572)      (966)   (1,145)    (1,942)
  Reduction in Valuation
   Allowance                         -    (14,975)        -    (29,293)
  Other                            (12)      (381)      (92)       193
                               --------  ---------  --------  ---------
Total Benefit for Federal
 and State Income Taxes        $(3,695)  $ (7,125)  $(7,812)  $(24,031)
                               ========  =========  ========  =========

                                                   TEP
                                ---------------------------------------
                                Three Months Ended     Six Months Ended
                                    June 30,              June 30,
                                 1998       1997        1998       1997
                                ---------------------------------------
                                       - Thousands of Dollars -
Federal Income Tax (Benefit)
 Expense at Statutory Rate     $ 3,162   $  7,972    $2,468   $  6,077
  State Income Tax (Benefit)
   Expense, Net of Federal
   Deduction                       488      1,225       381        934
  Depreciation Differences
   (Flow Through Basis)          2,419          -     3,459          -
  Capital Loss Carryforwards    (4,463)         -    (4,463)         -
  Investment Tax Credit
   Amortization                   (572)      (966)   (1,145)    (1,942)
  Reduction in Valuation
   Allowance                         -    (14,975)        -    (29,293)
  Other                            (72)      (381)     (115)       193
                               --------  ---------   -------  ---------
Total (Benefit) Expense for
Federal and State Income Taxes $   962   $ (7,125)   $  585   $(24,031)
                               ========  =========   =======  =========


     Income taxes are included in the income statements as follows:

                                            UniSource Energy
                               ---------------------------------------
                               Three Months Ended     Six Months Ended
                                    June 30,               June 30,
                                1998       1997        1998       1997
                               ---------------------------------------
                                       - Thousands of Dollars -
Operating Expenses            $ 3,038   $  4,260   $ 1,101  $   1,912
Other Income (Deductions)      (3,016)   (11,385)   (2,385)   (25,943)
Unregulated Energy
  Businesses - Net             (3,717)         -    (6,528)         -
                              --------  ---------  --------  ---------
Total Income Tax Benefit      $(3,695)  $ (7,125)  $(7,812)  $(24,031)
                              ========  =========  ========  =========

                                                  TEP
                               ---------------------------------------
                               Three Months Ended     Six Months Ended
                                    June 30,               June 30,
                                1998       1997        1998       1997
                               ---------------------------------------
                                       - Thousands of Dollars -
Operating Expenses            $ 3,038   $  4,260   $ 1,101   $  1,912
Other Income (Deductions)      (2,076)   (11,385)     (516)   (25,943)
                              --------  ---------  --------  ---------
Total Income Tax (Benefit)
 Expense                      $   962   $ (7,125)  $   585   $(24,031)
                              ========  =========  ========  =========

     The reduction in the valuation allowance and corresponding NOL
benefit in 1997 are primarily due to revisions in the estimated amount
of NOLs that we expect to offset future taxable income.  As of December
31, 1997, both UniSource Energy and TEP had recorded the amount of
prior period NOL benefit that we expect to utilize on future income tax
returns.  At the present time, we are not able to estimate future
additional amounts of NOL benefit that we may recognize in the income
statements of either UniSource Energy or TEP.  This is because there
are still open tax years for which there may be additional assessments
and because federal and state NOL carryforwards have varying expiration
dates.  We do not expect to recognize additional amounts of NOL benefit
until such items are resolved.

NOTE 8.  NEW ACCOUNTING STANDARD
- --------------------------------

      In  June  1998, the Financial Accounting Standards  Board  issued
Statement  of  Financial  Accounting  Standards  No.  133  (FAS   133),
Accounting  for  Derivative Instruments and Hedging  Activities.   This
Statement  requires  that  all  derivative  financial  instruments   be
recognized  as  either  assets or liabilities  in  the  balance  sheet.
Measurement is at fair value and if the derivative is not designated as
a  hedging instrument, changes in fair values (i.e., gains and  losses)
are  to  be recognized in earnings in the period of change.  If certain
conditions  are met, a derivative may be designated a hedge,  in  which
case  the  accounting  for changes in fair value  will  depend  on  the
specific  exposure being hedged.  The Company is required to adopt  FAS
133  in the first quarter of 2000.  We are still evaluating the impact,
if  any,  that  the  adoption of FAS 133 will  have  on  our  financial
statements.

NOTE 9.  RECLASSIFICATIONS
- --------------------------

     Minor reclassifications have been made to the prior year financial
statements to conform to the current year's presentation.

NOTE 10.  REVIEW BY INDEPENDENT PUBLIC ACCOUNTANTS
- --------------------------------------------------

     With respect to the unaudited consolidated financial information
of UniSource Energy and TEP for the three-month and six-month periods
ended June 30, 1998, PricewaterhouseCoopers LLP reported that they have
applied limited procedures in accordance with professional standards
for a review of such information. However, their separate report dated
August 4, 1998, appearing herein, states that they did not audit and
they do not express an opinion on that unaudited consolidated financial
information.  PricewaterhouseCoopers LLP has not carried out any
significant or additional audit tests beyond those which would have
been necessary if their report had not been included.  Accordingly, the
degree of reliance on their report on such information should be
restricted in light of the limited nature of the review procedures
applied.  PricewaterhouseCoopers LLP is not subject to the liability
provisions of section 11 of the Securities Act of 1933 for their report
on the unaudited consolidated financial information because that report
is not a "report" or a "part" of a registration statement prepared or
certified by PricewaterhouseCoopers LLP within the meaning of sections
7 and 11 of the Act.





ITEM 2. - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS
- ---------------------------------------------------------------------------

     UniSource Energy is a holding company which owns all of the
outstanding common stock of TEP and MEH.  TEP is an operating public
utility engaged in the generation, purchase, transmission, distribution and
sale of electricity for customers in the greater Tucson, Arizona area and
to wholesale customers.  MEH owns all of the outstanding common stock of
four subsidiaries established for the purpose of operating or investing in
various unregulated energy-related businesses.

     TEP is the principal subsidiary of UniSource Energy and accounts for
substantially all of its assets, revenues and net income.  The financial
condition and results of operations of TEP are currently the principal
factors affecting the financial condition and results of operations of
UniSource Energy on an annual basis, although losses from energy-related
ventures of MEH and its subsidiaries have resulted in losses reported by
the Company for the six-months ended June 30, 1998.

     Management's Discussion and Analysis explains the general financial
condition and the results of operations for UniSource Energy and its
business subsidiaries including:

  -  operating results during the second quarter and the first six months
     compared with the same periods in the prior year,
  -  the outlook for dividends on common stock,
  -  changes in liquidity and capital resources during the second quarter
     and first six months of 1998, and
  -  expectations of identifiable material trends which may affect our
     business in the future.

     Management's Discussion and Analysis should be read along with the
Company's Condensed Consolidated Financial Statements, beginning on page 3,
which present the results of operations for the quarters and the six month
periods ended June 30, 1998 and 1997.  Management's Discussion and Analysis
analyzes and explains the differences between periods for specific line
items of the Condensed Consolidated Financial Statements.

OVERVIEW
- --------

     UniSource Energy recorded net income of $1.1 million for the quarter
ended June 30, 1998, and a net loss of $6.0 million for the first six
months of 1998.  This compares with net income of $29.9 million in the
second quarter and $41.4 million for the first six months of 1997.

     Our results in the second quarter of 1998 were affected primarily by
the following factors: losses from unregulated energy-related subsidiaries
($5.6 million after-tax), lower non-cash regulatory revenues ($3.1 million
pre-tax), and higher interest expense ($3.4 million pre-tax).  Also, the
results in the second quarter of 1997 included the effect of the following
non-recurring items:

  -  $15.0 million net operating loss carryforward tax benefits,
  -  $10.2 million in pre-tax other income from a reversal of loss
     provision,  and
  -  $2.6 million in pre-tax consulting fees paid to NEV.

Excluding these adjustments, we would have recorded net income of $10.4
million in the second quarter of 1997. These changes are discussed in more
detail in Results of Operations and Investments in Energy-Related
Affiliates, below.

     Our results in the first six months of 1998 were affected primarily by
the following factors: losses from unregulated energy-related subsidiaries
($9.7 million after-tax), lower non-cash regulatory revenues ($8.1 million
pre-tax), and higher interest expense ($7.6 million pre-tax).  The results
of the first six months of 1997 also included the effects of the following
non-recurring items:

  -  $29.3 million net operating loss carryforward tax benefits,
  -  $10.2 million in pre-tax other income from a reversal of loss
     provision,
  -  $2.9 million in pre-tax VSP expense, and
  -  $3.7 million in pre-tax consulting fees paid to NEV.

Excluding these adjustments, net income would have been $10.0 million in
the first six months of 1997. These factors are discussed in more detail in
Results of Operations and Investments in Energy-Related Affiliates, below.

     The Company's and TEP's financial prospects are subject to regulatory,
economic, and other uncertainties.  These uncertainties include the extent
to which TEP can alter operations and reduce costs in response to industry
changes or unanticipated economic downturns, which may be limited by
continued high financial and operating leverage.  Our future success will
depend, in part, on our ability to contain and/or reduce the costs of
serving retail customers and the level of sales to those customers.  Until
the uncertainties surrounding the introduction of retail competition in
Arizona are resolved, predicting the level of TEP's future energy sales and
the composition of its future revenues is difficult.  However, we expect
retail competition will exist in our local market within the next three
years.  See Competition, Retail below.  In a deregulated environment,
revenues from energy sales will be less certain, although revenues from
transmission and distribution services, which we expect to remain
regulated, would likely continue to grow.  Even in a deregulated
environment, TEP expects to continue to benefit from population and
economic growth in the Tucson area through increased revenues from its
regulated distribution services.

     The Company's financial prospects are also subject to uncertainties
relating to the start-up and developmental activities of the unregulated
energy-related affiliates.  Although the Company's investments in
unregulated energy-related affiliates comprise less than 1% of total
assets, start-up costs and other subsidiary developmental activities have
contributed to losses from these activities in 1998.  These losses have
contributed to the losses reported by the Company for the six-month period
ended June 30, 1998.

     The Company is addressing the uncertainties discussed above and is
positioning itself to benefit from the changing regulatory environment.  We
are improving cost measurement and management techniques and are re-
engineering various functions at TEP.  We have also extended contracts,
where appropriate, for large wholesale and retail customers, and are
developing new affiliates to provide energy services to markets beyond
TEP's retail service territory.  See Competition, Retail; Shared Savings
Proposal; Investments in Energy-Related Affiliates; and Results of
Operations below.

     Since April 1997, we have made significant progress in our financial
strategy to reduce refinancing risk by extending maturities of long-term
debt and letters of credit and to reduce exposure to variable interest
rates by refinancing with fixed interest rates.  TEP refinanced variable
rate debt obligations at fixed rates and entered into a new bank Credit
Agreement to replace the MRA.  On August 4, 1998, TEP issued bonds to
refinance all of the First Mortgage Bonds that prohibit the payment of
dividends, and called for the redemption of these bonds (which mature
between 1999 and 2003) on September 3, 1998.  See Financing Developments,
TEP First Mortgage Bonds and Dividends on Common Stock, below.

     Despite these improvements, TEP's and UniSource Energy's consolidated
capital structures remain highly leveraged and include $329 million of
variable rate debt obligations which will impact TEP's earnings and cash
flow if interest rates change.

     During the next twelve months, TEP expects to fund its operating
activities and construction expenditures with internal cash flows, existing
cash balances, and, if necessary, borrowings under the Revolving Credit.
As of August 7, 1998, cash balances, including cash equivalents for
UniSource Energy, were approximately $132 million, of which $102 million
was held by TEP and its consolidated subsidiaries.


COMPETITION
- -----------

    RETAIL

      Under current law, TEP does not compete with other companies for
electric service in TEP's retail service territory.   However, TEP competes
against gas service suppliers and others who provide energy services.  TEP
actively markets energy and customized energy-related services.  We have
not lost any customers to self-generation partly because of these efforts.
For example, in recent years, TEP executed new contracts with two principal
customers that provide approximately 9% of TEP's total annual retail
revenues.  Both customers are in the copper mining business.  The new
contracts include price reductions, term extensions, and a provision for
interruptible service.  These contracts expire in March 2001 and January
2003.  These mining customers cannot terminate the contracts early without
giving us at least one and up to two years prior notice.  We have not
received any such notices.

     Retail Electric Competition Rules

     In December 1996, the ACC adopted rules that require a phase-in of
retail electric competition in Arizona beginning January 1, 1999.  The
rules were adopted as a framework to implement competition.  On August 5,
1998 the ACC adopted amendments to the rules which, in part, provide a two-
year phase-in schedule in which all retail customers will have access to
competitive generation by January 1, 2001.

     The key provisions of the rules include the following:

  -  Each Affected Utility shall make available at least 20% of its 1995
     system retail peak demand for competitive generation supply on a
     first-come, first-served basis, as follows: (1) All Affected Utility
     customers with non-coincident peak demand load of 1 MW or greater will
     be eligible for competitive electric services no later than January 1,
     1999.  (2) Groups of Affected Utility customers with individual non-
     coincident peak load demands of 40 kW or greater aggregated into a
     combined load of 1 MW or greater will also be eligible for competitive
     service no later than January 1, 1999.  Each Affected Utility shall
     also offer a residential phase-in program with a minimum of 1/2 of 1%
     of residential customers having access to competitive electric
     services on January 1, 1999, with the number of customers eligible in
     this program to increase by 1/2 of 1% every quarter until January 1,
     2001.  All retail customers shall be entitled to obtain competitive
     electric services no later than January 1, 2001.

     TEP currently serves about 80 customers who qualify under the 1 MW or
     greater category described above, representing 351 MW of load.  Of
     this load, 60% is under contract through 2001.

  -  Each Affected Utility shall file a report detailing possible
     mechanisms to provide benefits, such as rate reductions of 3% - 5%, to
     all Standard Offer customers.

  -  Each Affected Utility shall make available to all customers in its
     service territory Standard Offer bundled generation, transmission,
     ancillary, distribution and other necessary services at regulated
     rates.  After January 1, 2001, Standard Offer service shall be
     provided by the Affected Utilities, which will become Utility
     Distribution Companies (UDCs), who shall also act as providers of last
     resort.

  -  The Affected Utilities shall provide non-discriminatory open access to
     transmission and distribution facilities to serve all customers.  The
     ACC supports the development of an Independent System Operator (ISO)
     or, absent an ISO, an Independent Scheduling Administrator (ISA).

  -  All competitive generation assets and services shall be separated from
     an Affected Utility prior to January 1, 2001.  Such separation shall
     either be to an unaffiliated party or to a separate corporate
     affiliate or affiliates.  If an Affected Utility chooses to transfer
     its competitive generation assets or competitive services to a
     competitive electric affiliate, such transfer shall be at a value
     determined by the ACC to be fair and reasonable.

      Appeal of ACC Order

      In February 1997, TEP filed in the Arizona Superior Court an appeal
of the ACC order adopting the rules. TEP filed a motion for summary
judgment, claiming, among other things that the Competition Rules:  (a)
violated the Regulatory Compact between TEP and the State of Arizona; (b)
confiscated TEP's property; and (c) violated due process.  The Court did
not grant summary judgment but ruled that the Commission must hold hearings
before it can modify TEP's Certificate of Convenience and Necessity (CC&N).
No trial date has been set in the case and no final order has been issued.
We are unable to predict the outcome of the appeal.

      Stranded Cost Recovery

      On June 22, 1998, the ACC adopted an order which outlines its policy
for stranded cost recovery by Arizona utilities in a competitive energy
market.  The order is an amended version of the original order proposed by
the ACC Hearing Officer on May 6, 1998.  The proposed order was discussed
in the Company's and TEP's Report on Form 10-Q for the period ended March
31, 1998.

      The order provides two methods for stranded cost recovery for the
Affected Utilities: (1) Divestiture/Auction Methodology and (2) Transition
Revenues Methodology.  The order encourages, but does not require, full
divestiture of generating assets through an auction to unaffiliated third
parties.  The order states that only those Affected Utilities choosing
divestiture through the Auction/Divestiture Methodology shall have the
opportunity to recover 100% of unmitigated stranded costs.  The key
components of the order are summarized below:

     Divestiture/Auction Methodology
     -------------------------------

  -  Affected Utilities choosing divestiture through the auction method
     must file a divestiture plan for ACC approval no later than October 1,
     1998.  Divestiture must be completed by January 1, 2001.

  -  The amount of stranded costs shall be the difference between the value
     of generation assets (generating plants, purchased power contracts,
     fuel contracts, and related regulatory assets) under traditional
     regulation and the market value of the assets after divestiture.  The
     definition of stranded costs shall include reasonable costs incurred
     for premiums, penalties or other payments necessary to effect
     divestiture, income tax ramifications of divestiture, redemption costs
     associated with tax-exempt two-county debt which may have to be
     redeemed upon transfer of the assets, and other reasonable costs
     necessarily incurred to accomplish divestiture.  Unmitigated stranded
     costs shall also include reasonable employee severance and retraining
     costs necessitated by electric competition.

  -  An Affected Utility shall be permitted to collect 100% of its stranded
     costs, including a return on its unamortized balance over a ten-year
     period, with a true-up mechanism.

  -  The ACC will work with the Affected Utility to provide sufficient
     assurances in order to avoid triggering write-offs related to the
     application of FAS 71.

  -  An Affected Utility's generation affiliate may acquire the generation
     assets of its parent or sister company, or the generation assets of
     another Affected Utility in the auction if it establishes that it is
     the highest bidder and that the acquisition will not result in the
     entity having more than 40% of the state's total generation megawatts
     of capacity.

  -  An Affected Utility that divests all its generation costs to non-
     affiliated entities, that results in negative stranded costs (not
     including regulatory assets), shall be entitled to keep 50% of the
     negative stranded costs.

  -  All Affected Utilities' customers shall pay their appropriate share of
     stranded costs either through a Competitive Transition Charge (CTC) or
     a standard offer rate, collected over a maximum of ten years.

     Transition Revenues Methodology
     -------------------------------

  -  The order states that "this option would be to provide sufficient
     revenues necessary to maintain financial integrity, such as avoiding
     default under currently existing financial instruments for a period of
     ten years, at the end of which time there would be no remaining
     stranded costs, or for the Commission to otherwise provide an
     allocation of stranded cost responsibilities and risks between
     ratepayers and shareholders as is determined to be in the public
     interest for a given Affected Utility."

      Each Affected Utility must file its choice of options for stranded
cost recovery by August 21, 1998.  In addition, the Affected Utility will
need to file an implementation plan that would include the following items,
if appropriate, for their option choice: the estimation of stranded costs
separated out into regulatory assets and other generation related assets; a
preliminary plan for auction/divestiture; the minimum financial ratios to
maintain financial viability for ten years; the amount of regulatory assets
requested, how much of those assets are generation related, and the
Commission Decision Number that approved such assets; and other information
as necessary.

     TEP will cease to account for its generation operations using FAS 71
at the time the ACC approves a cost recovery plan specific to TEP,
including the specific amount of stranded costs that TEP can recover and a
determination of a cost recovery method.  The amount and method of recovery
that the ACC approves for TEP will determine whether write-offs will be
incurred at that time.  The ACC is not expected to make a final
determination of a stranded cost recovery plan for TEP until at least the
fourth quarter of 1998.  We are unable to predict the amount of write-offs,
if any, that may be incurred at that time.

      State and Federal Legislative Initiatives on Retail Electric
      Competition

      A legislative study committee established by the Arizona Legislature
issued a report on retail electric competition in December 1997.  The
report identified tax and other issues for the legislature to address.  In
January 1998, Arizona legislators introduced HB 2663 regarding the
implementation of retail electric competition in Arizona.  This bill was
passed by the Arizona State Legislature and signed by the Governor in May
1998.  The legislation requires the introduction of customer choice to 20%
of each utility's retail load by December 31, 1998 and to all utility
retail customers by December 31, 2000. This legislation only relates
directly to public-power entities such as SRP; however, the bill encourages
broader application of the legislation's principles by the ACC to the
state's investor-owned utilities, including TEP, and cooperatives.

       We believe that certain matters in the ACC's current retail
competition rules may require legislative changes, while others may require
amendments to the Arizona state constitution.  Additionally, federal
legislators introduced several retail competition initiatives in Congress
which, if passed, could modify or override the actions taken by the ACC or
the Arizona Legislature.  Congress is not expected to act on the
legislation in 1998.  We will continue to assess the likely impact on TEP
of the ACC's retail competition rules, proposed legislation, and other
potential market reforms.  We are unable to predict the ultimate impact of
increased retail competition on future results of our operations.  See
Accounting for the Effects of Regulation below for a discussion of the
potential impact of increased competition on the Company's accounting
policies.

   WHOLESALE

     TEP competes with other utilities, marketers and independent power
producers in the sale of electric capacity and energy in the wholesale
market.  FERC generally does not permit TEP's prices for wholesale sales of
capacity and energy to exceed rates determined on a cost of service basis.
However, in the fall of 1997, FERC granted TEP a tariff to sell at market-
based rates.  In the current market, wholesale prices are substantially
below total cost of service, but in all instances, we make wholesale sales
at prices which exceed fuel and other variable costs.  In addition, we
expect competition to sell capacity to remain vigorous.  Prices may remain
depressed for at least the next several years due to increased competition
and surplus capacity in the southwestern United States.  Competition for
the sale of capacity and energy is influenced by the following factors:

  -  availability of capacity in the southwestern United States,
  -  the availability and prices of natural gas and oil,
  -  spot energy prices, and
  -  transmission access.

     The FERC issued two orders pertaining to transmission access in April
1996.  FERC Order No. 888 requires all public utilities that own, control,
or operate interstate transmission facilities to offer transmission service
to others under a single tariff.  This tariff must incorporate certain
minimum terms and conditions of transmission service established by the
FERC and must also be used by public utilities for their own wholesale
market transactions.  Transmission and generation services for new
wholesale service are to be unbundled and priced separately.  FERC Order
No. 889 requires transmission service providers to establish or participate
in an open access same-time information system (OASIS) that provides
information on the availability of transmission capacity to wholesale
market participants.  The order also establishes standards of conduct to
prevent employees of a public utility engaged in marketing functions from
obtaining preferential access to OASIS-related information or from engaging
in discriminatory business practices.  TEP is in compliance with the
requirements of FERC Orders 888 and 889.

     TEP, along with other transmission owners and users located in the
southwestern United States, is investigating the feasibility of forming an
ISO for the region.  An ISO would be responsible for ensuring transmission
reliability and nondiscriminatory access to the regional transmission grid.
Over 50 participants have signed a Development Agreement and expect to
complete the detailed developmental work by the end of 1998.  The formation
of an ISO would be subject to approval by the FERC and state regulatory
authorities in the region.  The financial aspects of forming an independent
system operator, including the potential effects on TEP's future results of
operations, will be examined as part of the development work.

SHARED SAVINGS PROPOSAL
- ------------------------

     On July 9, 1997, TEP filed with the ACC a request for an annual rate
reduction of $6.8 million (or 1.1%) for retail customers.  This filing is
in the form of a Shared Savings Proposal (SSP) which includes a sharing of
cost containment benefits with customers and a reduction of potentially
stranded costs associated with the introduction of retail electric
competition in Arizona. The SSP identifies $20.8 million in savings
allocable to ACC jurisdictional operations. The cost containment savings
were realized primarily from renegotiated fuel contracts and a 15%
reduction in our workforce from the 1996 Voluntary Severance Program.  The
ACC has not set a date to decide on this matter.

     The proposed $6.8 million rate reduction represents an equal sharing
between TEP and its customers of $13.6 million of the cost savings.  The
SSP would allow TEP to use the remaining $7.2 million of cost savings to
reduce (mitigate) potentially stranded costs by accelerating the
amortization of Retail Excess Capacity Deferrals.  Retail Excess Capacity
Deferrals represent operating and capital costs associated with
Springerville Unit 2 capacity which the ACC did not allow TEP to recover in
rates until the 1994 and 1996 Rate Orders.  These Retail Excess Capacity
Deferrals totaled $86.3 million and $88.7 million at June 30, 1998 and
December 31, 1997, respectively.  These deferrals are only reflected in our
regulatory calculations.  The accompanying balance sheets do not include
these deferrals as the costs were expensed when incurred for financial
reporting purposes.  The proposed $7.2 million (after-tax) increase in
annual amortization expense for those excess capacity deferrals would
decrease the amortization period from 20 years to 5.6 years as of December
1996.  The proposed increase in amortization expense would be reflected in
TEP's regulatory accounting records but would have no impact on the
expenses included in the financial statements.

ACCOUNTING FOR THE EFFECTS OF REGULATION
- ----------------------------------------

     The ACC regulates TEP's utility business.  TEP generally uses the same
accounting policies and practices used by nonregulated companies for
financial reporting under generally accepted accounting principles.
However, sometimes these principles, such as FAS 71, require special
accounting treatment for regulated companies to show the effect of
regulation.  For example, in setting TEP's retail rates, the ACC may not
currently allow TEP to charge its customers to recover certain expenses
but, instead, require that these expenses be charged to customers in the
future.  In this situation, FAS 71 requires that TEP not show these
expenses on its current income statements but "defer" these items and show
them as "regulatory assets" on the balance sheet until TEP is allowed to
charge its customers.  TEP then amortizes these items to the income
statement as charges are billed to customers.  Similarly, certain items of
revenue may be deferred as regulatory liabilities, which are also eventually
amortized to the income statement.

     We have recorded regulatory assets and liabilities in our balance
sheets in accordance with FAS 71.  A regulated company must satisfy certain
conditions to apply the accounting policies and practices of FAS 71. These
conditions include:

  -   an independent regulator sets rates;
  -   the regulator sets the rates to cover specific costs of delivering
      service; and
  -   the service territory lacks competitive pressures to reduce rates
      below the rates set by the regulators.

We periodically assess whether we continue to meet these conditions.  If we
were required to stop applying FAS 71 to all or a portion of TEP's
regulated utility operations, we would write off the related balances of
TEP's regulatory assets and liabilities as a charge in our income
statement.  In that event, our earnings would be reduced by the net amount
of regulatory assets and liabilities, after applicable deferred income
taxes.  Based on the balances of TEP's regulatory assets and liabilities at
June 30, 1998, if we ceased to apply FAS 71 to all of TEP's regulated
operations, we would record an extraordinary loss of approximately $152
million, net of the related deferred income tax benefit of $103 million.
While our cash flows may be affected by regulatory orders and market
conditions, our cash flows would not be affected if we ceased to apply FAS
71.

     If we cease to apply FAS 71, we would need to evaluate the likelihood
that we could recover the cost of TEP's electric plant in the marketplace
using the criteria in FAS 121.  If undiscounted cash flows are less than
the carrying value of those assets, then we would need to write-off as an
expense a portion of those plant assets to reflect their current market
value.  We cannot predict if we would write-off any plant assets as a
result of applying FAS 121.

     Legislative and other regulatory measures are being developed in
various states to deregulate the electric generation business.  The SEC and
the EITF have been reviewing whether electric utilities should stop
applying FAS 71 to the business transactions in states where deregulation
is occurring.  In general, the EITF consensus states that utilities must
cease to account for the electric generation portion of their business
under FAS 71 when a deregulation plan is in place and its terms are known.
The EITF also concluded that utilities do not need to write off regulatory
assets (including those related to generation) if the cash flow stream from
regulated rates includes recovery of the regulatory assets. We are
uncertain how the EITF consensus will impact TEP as deregulation activities
develop in Arizona.  In the future, we may need to stop applying FAS 71 to
the electric generation portion of TEP's business, even if we believe that
we will recover the full amount of our costs under the ACC competition
phase-in plan.  Approximately 55% of TEP's net regulatory assets on the
balance sheet relate to electric generation.

     On June 22, 1998, the ACC adopted an order which outlines its policy
for stranded cost recovery by Arizona utilities in a competitive energy
market.  On August 5, 1998, the ACC adopted amendments to the Retail
Electric Competition Rules which, in part, provide a two-year phase-in
schedule in which all retail customers will have access to competitive
generation by January 1, 2001.  See Competition, Retail for a discussion of
the ACC order regarding stranded cost recovery and the ACC competition
rules.

     TEP will cease to account for its generation operations using FAS 71
at the time the ACC approves a cost recovery plan specific to TEP,
including the specific amount of stranded costs that TEP can recover and a
cost recovery method.  The amount and method of recovery that the ACC
approves for TEP will determine whether write-offs will be incurred at that
time.  The ACC is not expected to approve a final stranded cost recovery 
plan for TEP until at least the fourth quarter of 1998.  We are unable to
predict the amount of write-offs, if any, that may be incurred at that
time.

     In May 1998, the Arizona Legislature passed and the Governor signed a
bill regarding retail electric competition in Arizona.  See Competition,
Retail for a discussion of legislative initiatives on retail competition.


INVESTMENTS IN ENERGY-RELATED AFFILIATES
- ----------------------------------------

      MEH Corporation (MEH), a wholly-owned subsidiary of UniSource Energy,
owns 100% of the stock of four subsidiaries.  We established these
subsidiaries to pursue various unregulated energy-related investment
opportunities:

  -  Nations Energy Corporation (Nations Energy) develops independent power
     projects worldwide.

  -  Millennium Energy Holdings, Inc. (Millennium) holds a 50% interest in
     New Energy Ventures, L.L.C. (NEV).  NEV, a buyer's agent, provides
     electric load aggregation and advisory services to retail purchasers
     of electric energy.  As of June 30, 1998, NEV had contracts to
     purchase energy for and sell energy to customers principally in
     California and New York with a combined electrical demand of more that
     1,500 MW.  NEV began serving its California customers on March 31,
     1998 when the California retail electricity market opened to
     competition.

  -  Advanced Energy Technologies, Inc. (AET) holds a 50% interest in
     Global Solar Energy, L.L.C. (Global Solar), a manufacturer of thin-
     film photovoltaic cells.

  -  Southwest Energy Solutions, Inc. (SES) provides ancillary energy
     services to electric consumers.  SES owns 100% of the stock of SWPP
     Investment Company (SWPP) and SWPP International, Ltd. (SWPPI), which
     hold ownership interests in businesses engaged in the manufacture and
     sale of concrete power poles.

      Our investments in the energy-related ventures described above
(included in Investments and Other Property in UniSource Energy's
consolidated balance sheet) comprise less than 1% of total assets.
However, the net loss related to these start-up operations totaled $5.6
million for the second quarter and $9.7 million for the first six months of
1998.  This loss is included in the Other Income (Deductions) section on
UniSource Energy's income statement.  Almost all of MEH's losses in both
the second quarter and first six months of 1998 occurred at NEV.  The
California electricity market was originally scheduled to open to
competitors such as NEV on January 1, 1998.  However, technical matters
related to the California Independent System Operator and the California
Power Exchange delayed the opening of the electricity market until March
31, 1998.  Therefore, NEV could not make retail power sales in California
in the first quarter.  Start-up costs associated with expansion into
additional regions of the country also contributed to the losses in the
first half of 1998.  Although the delays in establishment of the
competitive market caused losses at NEV in the first six months, NEV
expects losses to decline as more customers are added throughout the year.

      From September 1997, the inception of Millennium's ownership 
in NEV, through June 30, 1998, Millennium recorded approximately $23.8 
million of NEV losses.  The amount equals the total funds and commitments 
provided by Millennium and UniSource Energy to NEV.  Accounting principles 
limit the amount of the loss to be recorded by Millennium to the total 
amount invested and committed by Millennium and UniSource Energy.  Under 
its current obligations, NEV is expected to continue to incur losses and
require additional funds to fulfill its obligations.  Should Millennium or
UniSource Energy provide additional funding to NEV, the amounts provided
would need to be immediately expensed if NEV has incurred losses in excess
of $23.8 million since September 1997.  NEV is seeking sources other than
Millennium and UniSource Energy to provide necessary funding.  There can be
no assurance that any such financing will be obtained.

      Depending on the nature of future investment opportunities, we expect
to make additional investments in energy-related ventures. The ACC Holding
Company Order requires that the capitalization (debt and equity) of the
Company's affiliates other than TEP not exceed 30% of TEP's capitalization
unless otherwise approved by the ACC.

DIVIDENDS ON COMMON STOCK
- -------------------------

    UniSource Energy

      UniSource Energy's ability to pay dividends depends upon cash flow
from TEP and MEH.  As described below, TEP has called for the redemption of
those First Mortgage Bonds which have covenants restricting the payment of
dividends.  TEP has not declared or paid a dividend on common stock since
1989.  Until TEP is able to pay dividends to UniSource Energy, UniSource
Energy will probably be unable to declare or pay dividends on its Common
Stock.

    TEP

      On August 4, 1998, TEP called for the redemption on September 3, 1998
of the five outstanding issues of First Mortgage Bonds (aggregating $137
million in principal amount) which prevent TEP from paying dividends unless
specific cash flow coverage and retained earnings tests are met.  As of
June 30, 1998, TEP met the cash flow coverage test, but did not meet the
retained earnings test, which requires positive retained earnings.  These
covenants will apply until these First Mortgage Bonds have been redeemed.
See Financing Developments, TEP First Mortgage Bonds, below.

      TEP's Credit Agreement allows TEP to pay dividends if it maintains
compliance with the agreement and meets certain financial covenants,
including a covenant that requires TEP to maintain a minimum level of net
worth.  As of June 30, 1998, the required minimum net worth was $169
million.  TEP's actual net worth at June 30, 1998 was $223.7 million.  See
Financing Developments, TEP Credit Agreement, below.  As of June 30, 1998,
TEP is in compliance with the terms of the Credit Agreement.

      The ACC Holding Company Order states that TEP may not pay dividends
to UniSource Energy in excess of 75% of its earnings until TEP's equity
ratio equals 37.5% of total capital (excluding capital lease obligations).
As of June 30, 1998, TEP's equity ratio on that basis was 15.6%.

      In addition to these restrictive covenants, the Federal Power Act
states that dividends shall not be paid out of funds properly included in
the capital account.  Although the terms of the Federal Power Act
provisions are unclear, we believe that there is a reasonable basis to pay
dividends from current year earnings.   We are continuing to evaluate this
situation.

EARNINGS
- --------

     UniSource Energy recorded net income of $1.1 million in the second
quarter of 1998 compared with net income of $29.9 million in the second
quarter of 1997.  Net income per average share of Common Stock was $0.03
for the second quarter of 1998 compared with net income per average share
of Common Stock of $0.93 for the second quarter of 1997.  Net income would
have been $10.4 million or $0.32 per share in the second quarter of 1997 if
the recognition of tax benefits and other one-time adjustments had been
excluded.  The major reasons for the variance between the results for the
second quarter of 1998 and the adjusted results for the second quarter of
1997 were:

  -  higher losses from investments in unregulated energy-related
     businesses,
  -  lower retail sales due to mild weather conditions,
  -  lower non-cash regulatory revenues, and
  -  higher interest expense.

     For the first six months of 1998, the Company recorded a net loss of
$6.0 million, compared with net income of $41.4 million for the first six
months of 1997.  The net loss per average share of Common Stock was $0.19
for the first six months of 1998 compared with net income per average share
of Common Stock of $1.29 for the first six months of 1997.  We would have
recorded net income of $10.0 million or $0.31 per share in the first six
months of 1997 excluding the recognition of tax benefits and other one-time
adjustments.  The major reasons for the variance between the results for
the first half of 1998 and the adjusted results for the first half of 1997
were the same factors that impacted the second quarter as described above.

     TEP recorded net income of $8.1 million for the second quarter of
1998, compared with net income of $29.9 million in the second quarter of
1997.  The second quarter earnings decrease was primarily attributable to
lower tax benefit recognition, nonrecurring items, lower retail sales due
to mild weather conditions, lower non-cash regulatory revenues and higher
interest expense from refinancings.  Earnings for the six-months ended June
30, 1998 were $6.5 million, compared with net income of $41.4 million for
the same period in 1997.  Earnings for the six-month period were affected
by the same factors as discussed above for the second quarter.

RESULTS OF OPERATIONS
- ---------------------

     Currently, TEP's financial condition and results of operations are the
primary factors affecting the financial condition and results of operations
of UniSource Energy on an annual basis.  We note any fluctuations that are
not primarily due to TEP activities.  All nonutility operating transactions
are reflected in Other Income (Deductions) on the UniSource Energy
Consolidated Statement of Income.

  Utility Sales and Revenues

     Comparisons of TEP's kilowatt-hour sales and electric revenues are
shown below:

<TABLE>
<CAPTION>
                                                             Increase/(Decrease)
                                                             -------------------
Three Months Ended June 30              1998        1997      Amount   Percent
- --------------------------              ----        ----      ------   -------
<S>                                 <C>         <C>         <C>         <C>
Electric kWh Sales (000):
      Retail Customers                1,819,112   1,886,216   (67,104)   (3.6)%
      Sales for Resale                1,036,756     749,074   287,682    38.4
                                      ---------   ---------   -------
             Total                    2,855,868   2,635,290   220,578     8.4

Electric Revenues (000):
      Retail Customers                 $150,735    $159,249   $(8,514)   (5.3)%
      Amortization of MSR Option
             Gain Regulatory Liability        0       3,092    (3,092) (100.0)
      Sales for Resale                   28,951      20,629     8,322    40.3
                                       --------    --------   -------
             Total                     $179,686    $182,970   $(3,284)   (1.8)
</TABLE>



<TABLE>
<CAPTION>
                                                            Increase/(Decrease)
                                                            -------------------
Six Months Ended June 30                 1998         1997     Amount   Percent
- ------------------------                 ----         ----     ------   -------
<S>                                   <C>          <C>          <C>     <C>
Electric kWh Sales (000):
      Retail Customers               3,609,421    3,508,657    100,764     2.9%
      Sales for Resale               1,886,888    1,464,261    422,627    28.9
                                     ---------    ---------    -------     
             Total                   5,496,309    4,972,918    523,391    10.5

Electric Revenues (000):
      Retail Customers                $288,884     $289,186      $(302)   (0.1)%
      Amortization of MSR Option
        Gain Regulatory Liability            0        8,105     (8,105) (100.0)
      Sales for Resale                  51,805       39,960     11,845    29.6
                                      --------     --------     ------
             Total                    $340,689     $337,251     $3,438     1.0
</TABLE>

     TEP's kWh sales to retail customers decreased by 3.6% during the
second quarter of 1998 compared with the second quarter of 1997.  Although
TEP experienced retail customer growth of 1.8%, moderate weather conditions
in the quarter contributed to the decline in retail kWh sales.  Based on
cooling degree days, a commonly used measure in the electric industry that
is calculated by subtracting 75 from the average of the high and low daily
temperatures, the Tucson area registered a decrease of approximately 36% in
cooling degree days for the second quarter of 1998 compared with the same
period in 1997, and a decrease of approximately 41% in cooling degree days
compared with the ten year average for the same period from 1988 to 1997.
Cooling degree days for the second quarter of 1998 were 256, compared to
402 for the second quarter of 1997 and 435 for the ten-year average.

     For the first six months of 1998, kWh sales to retail customers were
2.9% higher than the same period in 1997.  Although the weather was milder
in the second quarter, which reduced retail electric usage, the weather in
the first quarter was cooler than in 1997, which increased the electric
heating load for that quarter.  KWh sales to the Company's mining customers
also increased for the six-month period of 1998 due to contract amendments
that went into effect in mid-1997.

     Revenues from sales to retail customers decreased by 5.3% in the
second quarter of 1998 compared to the same period in 1997 because of the
lower kWh sales.  This decrease in retail revenues is slightly larger than
the decrease in kWh sales as a result of new long-term contracts with large
commercial, industrial and mining customers.  These contracts went into
effect after the first quarter of 1997 and have lower rates than the prior
contracts.  Retail revenues for the six-month period of 1998 were
relatively flat, with the increase in kWh sales noted above offset by the
impacts of lower rates under long-term contracts to large customers.

     The lower retail demand in the second quarter allowed TEP to increase
its wholesale sales activity.  Our kWh sales for resale increased by 38.4%
and the related revenues grew by 40.3% in the second quarter of 1998
relative to the same period in 1997.  For the six months ending June 30,
1998, sales for resale were up 28.9% and wholesale revenues increased 29.6%
compared to the same period in 1997.

     Retail electric sales rebounded in late June and in July 1998, as a
result of higher summer temperatures and increased humidity in TEP's retail
service territory.  On July 16, 1998, TEP set a record for retail
electricity sold in a 24-hour period, distributing 33,959 megawatt-hours to
its retail customers, a 7.0% increase over the previous record set in 1997.
In addition, on July 16, 1998, TEP experienced a new record peak demand of
1,786 MW, an increase of 7.7% over the previous record of 1,659 MW set on
August 10, 1997.

     TEP's non-cash revenue from the Amortization of the MSR Option Gain
Regulatory Liability was $3.1 million lower in the second quarter and $8.1
million lower in the first half of 1998 compared to the same periods in
1997.  This regulatory liability was fully amortized in May 1997.  If we
exclude the revenue from the MSR Option Gain amortization, total operating
revenues were unchanged in the second quarter and 3.5% higher in the first
half of 1998 than the same periods in 1997.

  Operating Expenses

     Fuel and Purchased Power expense increased by 10% in the second
quarter and 8% in the first half of 1998 compared with the same period in
1997 because of the increased purchased power to support the higher
wholesale sales we discussed above.     If we exclude the growth in Fuel
and Purchased Power expense, other operating expenses decreased in total by
5% in the second quarter and by 2% in the first half of 1998 over the same
periods in 1997.

     Maintenance and Repairs expense was lower in both the second quarter
and first half of 1998 than in the same periods of 1997.  Maintenance
expense was higher for those periods in 1997 due to scheduled maintenance
work at the Springerville station.

 Other Income (Deductions)

     UniSource Energy and TEP recognized $15 million of NOL benefit in the
second quarter of 1997 and none in 1998. This reduced benefit recognition,
offset by lower tax expense resulting from decreased income, caused the
second quarter 1998 income tax benefits included in Other Income
(Deductions) to decrease by $4.7 million and $9.3 million for UniSource
Energy and TEP, respectively, from the second quarter of 1997.

     Compared with the first six months of 1997, 1998 income tax benefits
included in Other Income (Deductions) decreased by $17.0 million and $25.4
million for UniSource Energy and TEP, respectively.  These changes are
mainly due to lower recognition of Net Operating Loss (NOL) benefits offset
by greater tax benefits as a result of lower income.  UniSource Energy and
TEP recognized $29.3 million of NOL benefit in the first six months of 1997
and none in 1998.

     As of December 31, 1997, both UniSource Energy and TEP had recorded
the amount of prior period NOL benefit that we expect to use on future
income tax returns.  At the present time, we are not able to estimate
future additional amounts of NOL benefit that we may recognize in the
income statements of either UniSource Energy or TEP.  This is because there
are still open tax years for which there may be additional assessments and
because federal and state NOL carryforwards have varying expiration dates.
We do not expect to recognize additional amounts of NOL benefit until such
items are resolved.

     A Reversal of Loss Provision of $10.2 million was recorded in the
second quarter of 1997.  The Reversal of Loss Provision relates to the
dissolution of a subsidiary which formed part of TEP's former investment
operations.

     Other Income for TEP includes interest income on the promissory note
it received from the Company in exchange for the transfer of its stock in
MEH.  See Note 3 of Notes to the Condensed Consolidated Financial
Statement--Transfer of MEH from TEP to UniSource Energy.  TEP recorded
interest income of $2.3 million in the second quarter and $4.6 million in
the first half of 1998 from this note.  On the Consolidated Statement of
Income for the Company, this income is eliminated as an inter-company
transaction.

     The unregulated energy subsidiaries owned by MEH reported a net loss
of $5.6 million for the second quarter and $9.7 million for the first half
of 1998, compared with net income of $0.5 million in the second quarter and
a net loss of $0.4 million for the first half of 1997.  The delayed
implementation of California's competitive electricity market until March
31, 1998, expansion into additional regions of the country, and other
subsidiary development activities affected the financial results for these
businesses.  See Investments in Energy-Related Affiliates.

  Interest Expense

     Interest expense increased by $3.4 million in the second quarter and
by $7.6 million of the first six months of 1998 relative to the same
periods in 1997.  Higher letter of credit fees for TEP's new Credit
Agreement, as well as higher interest rates from the refinancing of certain
variable rate debt obligations with fixed rate debt obligations accounted
for the increase.  (See Financing Developments, TEP Sale of Bonds, below).
These refinancings benefit TEP by extending debt maturities and reducing
the risk from changes in variable interest rates.

 EVENTS AFFECTING FUTURE RESULTS OF UTILITY OPERATIONS

  TEP Generating Resources

     On May 1, 1998, the lease on three internal combustion turbine
generating units having a combined generating capacity of 96 MW ended.  TEP
is in the process of evaluating the need for this type of peaking
generation resource in the near term.  Firm capacity purchases needed to
replace the expired leased capacity are not expected to have a material
negative impact on UniSource Energy or TEP financial results.

LIQUIDITY AND CAPITAL RESOURCES
- -------------------------------

  CASH FLOWS

     UniSource Energy

     Cash and cash equivalents increased by $43.9 million, or 50% during
the twelve months ended June 30, 1998.  The June 30, 1998 ending balance
was $132.1 million compared with the June 30, 1997 ending balance of $88.2
million.  For the twelve-month period ended June 30, 1998, net cash flows
from operating activities exceeded the cash needed for investing and
financing activities.

     Net cash flows from operating activities increased in aggregate by
$27.5 million in the first six months of 1998 compared with the same period
in 1997.  This increase was mainly due to the payment of $30 million in
contract termination fees to the Springerville coal supplier in the first
half of 1997 compared to $10.0 million paid to the coal supplier in the
first half of 1998 (see Note 6 of Notes to Condensed Consolidated Financial
Statements--Rate Matters).  In addition to the contract termination fees,
we received $11.3 million in June 1998 from the sale of emission
allowances.

     Total net cash outflows from investing activities increased by $12.5
million during the first half of 1998 compared with the same period in
1997.  An $8.9 million increase in Investments in Joint Ventures and a $4.4
million increase in Construction Expenditures were the primary reasons for
this change.

     Total net cash outflows from financing activities decreased by $13.0
million in the first half of 1998 compared with the same period in 1997.
Net retirements of long-term debt and capital lease obligations were
greater in the first half of 1997, primarily due to the repayment of the
$31 million balance outstanding on TEP's Renewable Term Loan.

     Our consolidated cash balance, including cash equivalents, at August
7, 1998 was approximately $132 million.  Of this amount, $102 million was
held by TEP and its wholly-owned subsidiaries.  These amounts exclude the
proceeds from the sale of TEP's First Collateral Trust Bonds on August 4,
1998, which will be used for the redemption of five series of First
Mortgage Bonds on September 3, 1998 (see Financing Developments, TEP First
Mortgage Bonds, below).  We invest cash balances in high-grade money market
securities with an emphasis on preserving the principal amounts invested.

     During 1998 and beyond, our sources of cash will be primarily
dividends from TEP (when allowed) and proceeds from sales of securities.
Potential cash needs may include funds for subsidiaries, funds to meet debt
obligations and funds to pay dividends to shareholders.  See Dividends on
Common Stock and Financing Developments, UniSource Energy for details on
these sources and uses of funds.

     TEP

     Cash and cash equivalents increased by $15.0 million, or 17%, from the
June 30, 1997 ending balance of $88.2 million to the June 30, 1998 ending
balance of $103.2 million.    TEP expects to generate enough cash flow
during 1998 to fund continuing operating activities and construction
expenditures.  Actual cash flows may vary from projections if there are
changes in wholesale revenues, changes in short-term interest rates or
other factors.  If cash flows were to fall short of our expectations, TEP
would use existing cash balances and, if necessary, borrow from the
Revolving Credit Facility.  At August 7, 1998, there was no outstanding
balance due under the Revolving Credit Facility.

  FINANCING DEVELOPMENTS

    TEP Sale of Bonds

     On March 17, 1998, the Apache County, Arizona Industrial Development
Authority issued $200 million of new bonds for the benefit of TEP.   The
proceeds were used on May 15, 1998 to redeem the 1981 Series A Apache
County Pollution Control Revenue Bonds due 2020 ($100 million) and the 1981
Series B Apache County Pollution Control Revenue Bonds due 2021 ($100
million).  The new bonds, which are unsecured, were issued in three series:
Series A Pollution Control Revenue Bonds ($83.7 million) bears interest at
5.85% and matures in 2028; Series B Pollution Control Revenue Bonds ($99.8
million) bears interest at 5.875% and matures in 2033; and Series C
Industrial Development Revenue Bonds ($16.5 million) bears interest at
5.85% and matures in 2026.

     The 1981 Series A Apache Bonds were supported by a letter of credit.
This LOC was collateralized by Second Mortgage Bonds under the terms of
TEP's Credit Agreement.  When TEP redeemed these bonds, the Letter of
Credit Facility decreased from $444 million to $341 million and the Second
Mortgage Bonds collateralizing those LOCs decreased by $103 million.  The
1981 Series B Apache Bonds were supported by a letter of credit outside of
the Credit Agreement.  This LOC was collateralized by First Mortgage Bonds.
When TEP redeemed these bonds, it eliminated the supporting LOC and retired
$103 million of First Mortgage Bonds collateralizing the LOC.

    TEP Credit Agreement

     As of June 30, 1998 and as of August 7, 1998, TEP had no borrowings
outstanding under its $100 million Revolving Credit Facility.

     As described above in TEP Sale of Bonds, after TEP redeemed the 1981
Series A Apache County Pollution Control Revenue Bonds on May 15, 1998, the
amount of its Letter of Credit Facility decreased to $341 million and the
amount of its total facilities under the Credit Agreement, which includes
the Revolving Credit Facility discussed above, decreased to $441 million.

     TEP is required by its Credit Agreement to maintain certain financial
covenants including (a) a minimum Consolidated Tangible Net Worth equal to
the sum of $133 million plus 40% of cumulative Consolidated Net Income
since January 1, 1997, (b) a minimum Cash Coverage Ratio ranging from 1.30
in 1998 and gradually increasing to 1.55 in 2002, and (c) a maximum
Leverage Ratio ranging from 7.00 in 1998 and gradually decreasing to 6.20
in 2002.  For the quarter ended June 30, 1998, TEP was in compliance with
each of these covenants.

    TEP First Mortgage Bonds

     In 1997 the ACC granted authority to TEP to refinance up to $184
million of its First Mortgage Bonds scheduled to mature between 1999 and
2003, as well as any redemption premiums, by issuing new debt and/or equity
securities.  As described below, TEP plans to complete these transactions
by the end of the third quarter 1998.  TEP's objective is to extend
maturities and eliminate certain restrictive covenants contained in the
existing First Mortgage Bonds.

     On May 15, 1998, TEP exchanged $46.9 million of its existing 12.22%
First Mortgage Bonds due 2000 for an identical amount of new 12.22%
Exchange Series First Mortgage Bonds due 2000.  With the exception of the
elimination of a covenant restricting the payment of dividends, the new
bonds have substantially the same terms and conditions as the existing
bonds.

     On August 4, 1998, TEP issued $140 million of First Collateral Trust
Bonds, Series A, and will use the proceeds on September 3, 1998 to redeem
all of its First Mortgage Bonds due in 1999, 2001, 2002, and 2003, as well
as the $31.9 million of 12.22% First Mortgage Bonds due 2000 not tendered
for exchange as described above.  The bonds to be redeemed bear interest at
rates ranging from 7.55% to 12.22%.  When TEP redeems the bonds as
described above, TEP will have eliminated covenants that currently prohibit
it from paying common stock dividends so long as it has an accumulated
earnings deficit (see Dividends on Common Stock).  The First Collateral
Trust Bonds, Series A bear interest at 7.50% and mature in 2008.  The First
Collateral Trust Bonds are not secured by a direct mortgage or other lien
on property of TEP, but instead are collateralized by an equal aggregate
principal amount of bonds issued under TEP's General First Mortgage and
held by the trustee.  If and when the bonds collateralizing the First
Collateral Trust bonds constitute all bonds outstanding under TEP's General
First Mortgage, the bonds issued under the General First Mortgage may be
surrendered and substituted with an equal amount of bonds issued under the
General Second Mortgage.  If and when the bonds collateralizing the First
Collateral Trust bonds constitute all bonds outstanding under the General
Second Mortgage, the bonds may be surrendered and the First Collateral
Trust Bonds, Series A will become unsecured obligations of TEP.

    UniSource Energy--Loans and Guarantees

     In December 1997, Millennium committed to provide NEV with $20 million
of funding.  At July 31, 1998, NEV had received the following under the $20
million commitment:

  -  Millennium provided $10 million in loans to NEV.
  -  Millennium provided $4 million for NEV preferred equity.
  -  UniSource Energy issued guarantees in the aggregate amount of $5.5
     million to secure the obligations of NEV to counterparties to energy
     purchase and sale agreements.

As a result of these loans and guarantees, the remaining commitment amount
available was $0.5 million at July 31, 1998.

     UniSource Energy is the guarantor of $32.8 million of performance
bonds that secure the amounts NEV California owes to the California utility
distribution companies (UDCs) for services provided by the UDCs in
connection with NEV California's sales in the California retail electric
market.  NEV California bills its customers for these UDC charges.

     In August 1998, UniSource Energy agreed to guarantee a $10 million 
loan that NEV obtained from an unrelated party.  The debt underlying the 
guarantee is not due until 1999. 


IMPACT OF YEAR 2000 ON COMPUTER SYSTEMS AND APPLICATIONS
- --------------------------------------------------------

      The Company continues to review, test and make modifications to its
computer systems and applications in an effort to ensure that its
generation, transmission and distribution facilities will provide
uninterrupted service and that year 2000 transactions can be processed.
The Company's year 2000 program commenced in 1996.

      We have completed an inventory and assessment for each of our critical
enterprise information systems.  The remediation of these systems began in
1996 and is expected to be completed by the end of 1998, including testing 
and implementation.

      We are reviewing the control and embedded systems of TEP's utility
plant (including the units that TEP owns part of but does not operate), as
well as whether major vendors are addressing the problem.  We anticipate
the inventory and assessment stages of the control and embedded systems
program to be substantially completed in the third quarter of 1998.  We 
expect remediation efforts to begin in the third quarter of 1998 and to 
be substantially completed by the end of the second quarter of 1999.  
The Company intends to begin contingency planning to attempt to address 
the possibility that not all remediation efforts will succeed.

      The Company has also identified the major vendors from whom we
purchase products or services.  We are contacting those vendors to
determine their plans to correct any problems they may face with year 2000
compliance and investigate any potential impact on TEP.  TEP and other
electric service providers in the WSCC are evaluating potential year 2000
risks resulting from interconnected electric and informational systems.
Such interconnected systems are critical to the reliability and integrity
of each interconnected electric service provider.  It is possible that the
failure of one such interconnected provider to achieve year 2000 compliance
could disrupt the provision of electric services by others.  TEP and other
providers in the WSCC are working together in an effort to avoid such
disruptions.

      From 1996 through June 30, 1998, year 2000 project costs of
approximately $600,000 have been incurred, all of which were expensed.  A
budget of $1.35 million has been established for year 2000 project costs.
All 2000 remediation costs will be expensed as incurred. 
 
      At this time we believe that all identified modifications to systems 
which the Company operates will be made within the required time frames.
Notwithstanding the Company's efforts, there can be no assurance that all
year 2000 problems with systems the Company operates will be identified and
remediated in a timely fashion.  Although the Company believes that, as a
result of its year 2000 program, any problems arising from the failure to
achieve year 2000 compliance will be minor, it is possible that non-
compliance could disrupt the generation, transmission or distribution of
electric energy.  We cannot assure the year 2000 compliance status of 
systems or parties that the Company does not control.   We cannot assess
the effect on the Company of non-compliance by systems or parties that 
the Company does not control.

SAFE HARBOR FOR FORWARD-LOOKING STATEMENTS
- ------------------------------------------

      This Quarterly Report on Form 10-Q contains forward-looking
statements as defined by the Private Securities Litigation Reform Act of
1995.  UniSource Energy and TEP include the following cautionary statements
to take advantage of the safe harbor provisions of the Private Securities
Litigation Reform Act of 1995 for any forward-looking statements made by,
or for, UniSource Energy or TEP in this Quarterly Report on Form 10-Q.
Forward-looking statements include statements concerning plans, objectives,
goals, strategies, future events or performance and underlying assumptions.
They include statements which are not statements of historical fact.  Such
forward-looking statements may be identified by the use of words such as
"anticipates," "estimates," "expects," "intends," "plans," "predicts,"
"projects," and similar expressions. UniSource Energy and TEP may
occasionally publish or make available forward-looking statements of this
nature. These cautionary statements and any other cautionary statements
which may accompany the forward-looking statements expressly qualify all
such forward-looking statements, whether written or oral, and whether made
by or for UniSource Energy or TEP.  In addition, UniSource Energy and TEP
disclaim any obligation to update any forward-looking statements to reflect
events or circumstances after the date we make forward-looking statements.

      Forward-looking statements involve risks and uncertainties which
could cause actual results or outcomes to differ materially from those we
express in the forward-looking statements.  We express in good faith the
expectations, beliefs and projections contained in this document.   We
believe we have a reasonable basis to make such statements based on our
examination of historical operating trends, data contained in our records
and other data available from third parties.  However, we cannot assure
that we will achieve our expectations, beliefs or projections.  In addition
to other factors and matters discussed in this document, we believe some of
the important factors that could cause actual results to differ materially
from those we discuss in the forward-looking statements include the
following:

1. Effects of restructuring initiatives in the electric industry and other
   energy-related industries.

2. Changes in economic conditions, demographic patterns and weather
   conditions in TEP's retail service area.

3. Changes affecting TEP's cost of providing electrical service including
   changes in fuel costs, generating unit operating performance, interest
   rates, tax laws, environmental laws, and the general rate of inflation.

4. Changes in governmental policies and regulatory actions with respect to
   allowed rates of return, financings, rate structures, and methods of
   establishing rates.

5. Changes affecting the cost of competing energy alternatives, including
   changes in available generating technologies and changes in the cost of
   natural gas.

6. Changes in accounting principles or the application of such principles
   to UniSource Energy, TEP, or any subsidiary.




                        PART II - OTHER INFORMATION

ITEM 1. -- LEGAL PROCEEDINGS
- -----------------------------------------------------------------------------

TAX ASSESSMENTS

     See Note 2 of Notes to Condensed Consolidated Financial Statements,
Tax Assessments.

ITEM 4. -- SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
- -----------------------------------------------------------------------------

     The Company conducted its Annual Meeting of Shareholders on May 8,
1998.  At that meeting, the shareholders of the Company elected members of
the Board of Directors.

     The total votes were as follows:

<TABLE>
                                         Against                 Broker
(i)Election of Directors      For      or Withheld   Abstain    Non-Votes
- ------------------------      ---      -----------   -------    ---------

<S>                       <C>            <C>         <C>          <C>
  Charles E. Bayless       29,532,611     470,128      --           --
  Larry W. Bickle          29,553,180     449,559      --           --
  Elizabeth T. Bilby       29,539,126     463,613      --           --
  Harold W. Burlingame     29,555,633     447,106      --           --
  Jose L. Canchola         29,524,772     477,967      --           --
  John L. Carter           29,579,686     423,053      --           --
  John A. Jeter            29,543,949     458,790      --           --
  R. B. O'Rielly           29,514,936     487,803      --           --
  Martha R. Seger          29,547,476     455,263      --           --
  H. Wilson Sundt          29,541,023     461,716      --           --
</TABLE>

ITEM 5. - OTHER INFORMATION
- -----------------------------------------------------------------------------

DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANTS

     UniSource Energy

     Daniel W. L. Fessler was elected to the Board of Directors effective
May 8, 1998.  Mr. Fessler, 56, was the President of the California Public
Utilities Commission from 1991 to 1996, and is a partner in the law firm of
LeBoeuf, Lamb, Greene & MacRae, L.L.P., in San Francisco, CA.

     James S. Pignatelli was elected Chairman, President and Chief
Executive Officer of the Company effective July 6, 1998, replacing Charles
E. Bayless, who accepted the positions of Chairman, President and CEO of
Illinova Corporation, in Decatur, IL.  Mr. Pignatelli had been Senior Vice
President and Chief Operating Officer of TEP since 1996.  He was named
UniSource Energy Senior Vice President and Chief Operating Officer upon
formation of UniSource Energy as TEP's holding company.  In 1998, he was
named TEP Executive Vice President and was elected to TEP's Board of
Directors.

     Ira R. Adler was named Executive Vice President and elected to the
Company's Board of Directors effective July 6, 1998.  Mr. Adler had been
Senior Vice President and Chief Financial Officer of TEP since 1990.  He
was named UniSource Energy Senior Vice President and Chief Financial
Officer upon formation of UniSource Energy as TEP's holding company.  In
1998, he was named TEP Executive Vice President and was elected to TEP's
Board of Directors.

     TEP

     James S. Pignatelli was elected Chairman, President and Chief
Executive Officer of TEP effective July 6, 1998, replacing Charles E.
Bayless.

     George W. Miraben was named Executive Vice President and elected to
TEP's Board of Directors effective July 6, 1998.  Mr. Miraben has been
Senior Vice President of Policy and Human Resources since 1996.

     The Board of Directors of TEP consists of Mr. Pignatelli, Mr. Adler,
Mr. Miraben, and the following members (who are also members of the
UniSource Energy Board of Directors): Elizabeth T. Bilby, Harold W.
Burlingame, John L. Carter, John A. Jeter, and Martha R. Seger.

SHAREHOLDER PROPOSAL DEADLINE FOR 1999 ANNUAL MEETING

     Rule 14a-4 of the Securities and Exchange Commission's proxy rules
allows the Company to use discretionary voting authority to vote on a
matter coming before an annual meeting of the shareholders which are not
included in the Company's proxy statement, if the Company does not have
notice of the matter at least 45 days before the date on which the Company
first mailed its proxy materials for the prior year's annual meeting of the
shareholders.  In addition, discretionary voting authority may generally
also be used if the Company receives timely notice of such matter (as
described in the preceding sentence) and if, in the proxy statement, the
Company describes the nature of such matter and how the Company intends to
exercise its discretion to vote on such matter.  Accordingly, for the 1999
Annual Meeting of the Company, any such notice must be submitted to the
Secretary of the Company on or before February 13, 1999.

     This requirement is separate and apart from the Securities and
Exchange Commission's requirements that a shareholder must meet in order to
have a shareholder proposal included in the Company's proxy statement.
Shareholder proposals intended to be presented at the 1999 Annual Meeting
of the Company must be received by the Company no later than December 2,
1998 in order to be eligible for inclusion in the Company's proxy statement
and the form of proxy relating to that meeting.

ADDITIONAL FINANCIAL DATA

The following table reflects the ratio of earnings to fixed charges for
TEP:

                                          12 Months Ended
                                          ---------------
                                    June 30,         December 31,
                                      1998               1997
                                      ----               ----
Ratio of Earnings to Fixed            1.32               1.39
Charges



ITEM 6. -- EXHIBITS AND REPORTS ON FORM 8-K
- -----------------------------------------------------------------------------

(a)  Exhibits.

     -- See Exhibit Index.

(b)   Reports on Form 8-K.

     -- Dated June 26, 1998, reporting on the ACC order regarding stranded
          cost recovery and certain changes in Executive Officers and
          Directors of the Registrants.

     -- Dated July 16, 1998, reporting on the Proposed Revisions of the
          Retail Electric Competition Rules before the ACC.

     -- Dated July 22, 1998 reporting on the Earnings for the Second
          Quarter 1998 of the Registrants.


                                 SIGNATURE


     Pursuant to the requirements of the Securities Exchange Act of 1934,
each registrant has duly caused this report to be signed on its behalf by
the undersigned thereunto duly authorized.  The signature for each
undersigned company shall be deemed to relate only to matters having
reference to such company or its subsidiary.


                                    UNISOURCE ENERGY CORPORATION
                                   -----------------------------
                                             (Registrant)


Date:  August 13, 1998                         Ira R. Adler
                                     -------------------------------
                                               Ira R. Adler
                                  Executive Vice President and Principal
                                             Financial Officer



                                      TUCSON ELECTRIC POWER COMPANY
                                      ------------------------------
                                             (Registrant)


Date:  August 13, 1998                         Ira R. Adler
                                      -------------------------------
                                               Ira R. Adler
                                   Executive Vice President and Principal
                                             Financial Officer




                               EXHIBIT INDEX

      4(a)- Thirty-third Supplemental Indenture, dated as of May 1,
            1998.
      4(b)- Thirty-fourth Supplemental Indenture dated as of August 1,
            1998.
      4(c)- Supplemental Indenture No. 3 creating a series of bonds
            designated Second Mortgage Bonds, Collateral Series, dated as of
            August 1,1998.
      4(d)- Indenture of Trust, dated as of August 1, 1998, between TEP and
            the Bank of Montreal Trust Company.
     11 -   Statement re computation of per share earnings - UniSource
            Energy.
     12 -   Computation of Ratio of Earnings to Fixed Charges - TEP.
     15(a)- Letter regarding unaudited interim financial information
            (PricewaterhouseCoopers LLP).
     15(b)- Letter regarding unaudited interim financial information
            (Deloitte &Touche LLP).
     27(a)- Financial Data Schedule - UniSource Energy.
     27(b)- Financial Data Schedule - TEP.


     <PAGE>
   
                                                           Appendix D
  

                         UNITED STATES
               SECURITIES AND EXCHANGE COMMISSION
                    Washington, D.C.  20549


                          FORM 10-Q

(Mark One)
  [X]   QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
           THE SECURITIES EXCHANGE ACT OF 1934

        For The Quarterly Period Ended September 30, 1998

                              OR

  [ ]   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
            THE SECURITIES EXCHANGE ACT OF 1934

  For the transition period from          to          .
                                 ---------   --------
                 

Commission       Registrant; State of Incorporation;      IRS Employer
File Number      Address; and Telephone Number            Identification Number
- -----------      -----------------------------            ---------------------
1-13739          UNISOURCE ENERGY CORPORATION             86-0786732
                 (An Arizona Corporation)
                 220 West Sixth Street
                 Tucson, AZ  85701
                 (520) 571-4000
1-5924           TUCSON ELECTRIC POWER COMPANY            86-0062700
                 (An Arizona Corporation)
                 220 West Sixth Street
                 Tucson, AZ  85701
                 (520) 571-4000



     Indicate by check mark whether each registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.
Yes     X     No 
    --------     --------

     At November 6, 1998, 32,246,455 shares of UniSource Energy Corporation's
Common Stock, no par value (the only class of Common Stock), were outstanding.

     UniSource Energy Corporation is the sole holder of the 32,162,167 shares 
of the outstanding Common Stock of Tucson Electric Power Company.


<PAGE>

This combined Form 10-Q is separately filed by UniSource Energy Corporation and
Tucson Electric Power Company.  Information contained herein relating to Tucson
Electric Power Company is filed by UniSource Energy Corporation and separately
by Tucson Electric Power Company on its own behalf.  Tucson Electric Power
Company makes no representation as to information relating to UniSource Energy
Corporation or its subsidiaries, except as it may relate to Tucson Electric
Power Company.


                               TABLE OF CONTENTS
                                                                           Page
                                                                           ----

Definitions..................................................................iv
Report of Independent Accountants.............................................1
Independent Accountants' Review Report........................................2

                         PART I - FINANCIAL INFORMATION

Item 1.  -- Financial Statements
     UniSource Energy Corporation
         Comparative Condensed Consolidated Statements of Income .............3
         Comparative Condensed Consolidated Statements of Cash Flows..........4
         Comparative Condensed Consolidated Balance Sheets....................5
     Tucson Electric Power Company
         Comparative Condensed Consolidated Statements of Income..............6
         Comparative Condensed Consolidated Statements of Cash Flows..........7
         Comparative Condensed Consolidated Balance Sheets....................8
     Notes to Condensed Consolidated Financial Statements
     Note 1.    Accounting for the Effects of Regulation......................9
     Note 2.    Tax Assessments..............................................12
     Note 3.    Transfer of MEH from TEP to UniSource Energy.................12
     Note 4.    Investments in Energy Related Affiliates.....................13
     Note 5.    Long-Term Debt...............................................14
     Note 6.    Warrant Exchange.............................................14
     Note 7.    Rate Matters.................................................15
     Note 8.    Income Taxes.................................................15
     Note 9.    Change in Method of Estimating Unbilled Revenues.............16
     Note 10.   New Accounting Standard......................................16
     Note 11.   Reclassifications............................................17
     Note 12.   Review by Independent Public Accountants.....................17

Item 2.  -- Management's Discussion and Analysis of Financial Condition and
Results of Operations
     Overview................................................................18
     Competition
         Retail..............................................................19
         Wholesale...........................................................23
     TEP Rate Settlement Agreement...........................................24
     Accounting for the Effects of Regulation................................24
     Investments in Energy Related Affiliates................................25
     Dividends on Common Stock
         UniSource Energy....................................................26
         TEP.................................................................26
     Earnings................................................................26
     Results of Operations...................................................27
          Utility Sales and Revenues.........................................27
          Operating Expenses........................................... .....28
          Other Income (Deductions)..........................................28
          Interest Expense......................................... .........29

                                     ii
<PAGE>


       Events Affecting Future Results of Utility Operations
           TEP Generating Resources..........................................29
     Liquidity and Capital Resources
       Cash Flows
           UniSource Energy..................................................29
           TEP...............................................................30
       Financing Developments
         Warrant Exchange Offer..............................................30
         Direct Stock Purchase Plan............. ............................30
         TEP First Mortgage Bonds............................................31
         TEP Sale of Pollution Control Bonds.................................31
         TEP Credit Agreement................................................31
         UniSource Energy--Loans and Guarantees..............................32
     Impact of Year 2000 on Computer Systems and Applications................32
     Safe Harbor for Forward-Looking Statements..............................34

                          PART II - OTHER INFORMATION

Item 1. -- Legal Proceedings
     Tax Assessments.........................................................35
Item 5. - Other Information
     Investments in Energy-Related Affiliates................................35
     Additional Financial Data...............................................36
Item 6.  -- Exhibits and Reports on Form 8-K.................................36
Signature Page...............................................................37
Exhibit Index................................................................38

                                      iii
<PAGE>

                                  DEFINITIONS

The abbreviations and acronyms used in the 1998 Third Quarter Form 10-Q are
defined below:
- -------------------------------------------------------------------------------

ACC...............   Arizona Corporation Commission.
ACC Staff.........   Staff of the Arizona Corporation Commission.
ADOR..............   Arizona Department of Revenue.
AET...............   Advanced Energy Technologies, Inc., a wholly-owned
                      subsidiary of MEH Corporation.
Affected Utilities   Electric utilities regulated by the ACC, including TEP,
                      Arizona Public Service, Citizens Utilities Company, and
                      several electric cooperatives.
APS...............   Arizona Public Service Company.
Banks.............   The financial institutions party to the Credit Agreement
                      dated as of December 30, 1997.
Common Stock......   The Company's common stock, without par value.
Company or UniSource 
 Energy...........   UniSource Energy Corporation.
Credit Agreement..   Credit Agreement between TEP and the Banks, dated as of
                      December 30, 1997.
EITF..............   Emerging Issues Task Force of the Financial Accounting
                      Standards Board.
FAS 71............   Statement of Financial Accounting Standards #71:
                      Accounting for the Effects of Certain Types of
                      Regulation.
FAS 101...........   Statement of Financial Accounting Standards #101:
                      Regulated Enterprises - Accounting for the
                      Discontinuation of Application of FAS 71.
FAS 121...........   Statement of Financial Accounting Standards #121:
                      Accounting for the Impairment of Long-Lived Assets and
                      for Long-Lived Assets to be Disposed Of.
FERC..............   Federal Energy Regulatory Commission.
First Collateral 
 Trust Bonds......   Bonds issued under the First Collateral Trust
                      Indenture.
First Collateral 
 Trust Indenture..   The Indenture, dated as of August 1,
                      1998, of Tucson Electric Power Company to Bank of
                      Montreal Trust Company of the City of New York, as
                      trustee.
First Mortgage Bonds  First mortgage bonds issued under the General First
                      Mortgage.
General First 
 Mortgage.........   The Indenture, dated as of April 1, 1941, of Tucson
                      Gas, Electric Light and Power Company to The Chase
                      National Bank of the City of New York, as trustee, as
                      supplemented and amended.
General Second 
 Mortgage.........   The Indenture, dated as of December 1, 1992, of
                      Tucson Electric Power Company to Bank of Montreal Trust
                      Company of the City of New York, as trustee, as
                      supplemented.
Global Solar......   Global Solar Energy, L.L.C., a corporation in which a 50%
                      interest is owned by AET.
Holding Company 
 Order............   ACC Order issued November 25, 1997 granting TEP the
                      authority to organize a public utility holding company.
IDBs..............   Industrial development revenue or pollution control bonds.
IRS...............   Internal Revenue Service.
Irvington.........   Irvington Generating Station.
Irvington Lease...   The leveraged lease arrangement relating to Irvington Unit
                      4.
ISO...............   Independent System Operator.
ITC...............   Investment Tax Credit.
kWh...............   Kilowatt-hour(s).
LOC...............   Letter of Credit.
MEH...............   MEH Corporation, a wholly-owned subsidiary of UniSource
                      Energy.
Millennium........   Millennium Energy Holdings, Inc., a wholly-owned
                      subsidiary of MEH.
MRA...............   Master restructuring agreement between TEP and certain
                      banks which included the Renewable Term Loan, Revolving
                      Credit and certain replacement reimbursement agreements,
                      which was terminated on December 30, 1997.
MSR...............   Modesto, Santa Clara and Redding Public Power Agency.

                                      iv
<PAGE>


MW................   Megawatt(s).
Nations Energy....   Nations Energy Corporation, a wholly-owned subsidiary of
					  MEH.
NEV...............   New Energy Ventures, Inc., a company in which a 50%
                      interest is owned by Millennium.
NEV Technologies..   NEV Technologies, L.L.C., a majority owned subsidiary of
                      NEV.
1994 Rate Order...   ACC Rate Order concerning an increase in TEP's retail base
                      rates and certain regulatory write-offs, issued January
                      11, 1994.
1996 Rate Order...   ACC Rate Order concerning an increase in
                      TEP's retail base rates and the recovery of Springerville
                      Unit 2 costs, issued March 29, 1996.
NOL...............   Net Operating Loss carryforward for income tax purposes.
Rate Settlement...   TEP's rate settlement agreement approved by the ACC in
                      August 1998, which provides retail base price decreases
                      over a two year period.
Renewable Term Loan   Credit facility under the MRA, which was terminated
                       December 30, 1997.
Revolving Credit..   $100 million revolving credit facility entered into under
                      the Credit Agreement between a syndicate of certain of
                      the Banks and TEP.
SCR Agreement.....   Settlement Agreement dated November 4, 1998 between TEP
                      and the ACC Staff, regarding the divestiture of
                      generating assets and stranded cost recovery.
SEC...............   Securities and Exchange Commission.
Second Mortgage 
 Bonds............   TEP's second mortgage bonds issued under the General
                      Second Mortgage.
SES...............   Southwest Energy Solutions, Inc., a wholly-owned
                      subsidiary of MEH.
Shareholders......   Holders of UniSource Energy Common Stock.
Springerville.....   Springerville Generating Station.
Springerville Coal 
 Handling Facilities
 Leases...........   Leveraged lease arrangements relating to the coal
                      handling facilities serving Springerville.
Springerville Common
 Facilities.......   Facilities at Springerville used in common
                      with Springerville Unit 1 and Springerville Unit 2.
Springerville Common
 Facilities Leases   Leveraged lease arrangements relating to an undivided one-
                      half interest in certain Springerville Common Facilities.
Springerville Unit
 1 Leases.........   Leveraged lease arrangements relating to
                      Springerville Unit 1, and an undivided one-half interest
                      in certain Springerville Common Facilities and which has
                      been assumed by TEP.
SRP...............   Salt River Project Agricultural Improvement and Power
                      District.
Standard Offer....   Bundled service offered to all consumers in a designated
                      service territory at regulated rates.
SWPP..............   SWPP Investment Company, a wholly-owned subsidiary of SES.
SWPPI.............   SWPP International, a wholly-owned subsidiary of SES.
TEP...............   Tucson Electric Power Company, the principal subsidiary of
                      UniSource Energy.
UniSource Energy..   UniSource Energy Corporation.
Valencia..........   Valencia Energy Company, previously a wholly owned
                      subsidiary of TEP, merged into TEP on May 31, 1996.
VSP...............   Voluntary Severance Plan offered to TEP employees and
                      implemented in May 1996.
WSCC..............   Western Systems Coordinating Council.


                                       v
<PAGE>

REPORT OF INDEPENDENT ACCOUNTANTS


To the Board of Directors and Stockholders of
UniSource Energy Corporation and
to the Board of Directors of
Tucson Electric Power Company

We have reviewed the accompanying condensed consolidated balance sheet and the
related condensed consolidated statements of income and of cash flows of
UniSource Energy Corporation and its subsidiaries (the Company) and of Tucson
Electric Power Company and its subsidiaries (TEP) as of and for the three-month
and nine-month periods ended September 30, 1998.  This financial information is
the responsibility of the Company's and TEP's management.  The financial
statements as of September 30, 1997 were reviewed by other independent
accountants whose report dated February 23,1998 stated that they were not aware
of any material modifications that should be made to such financial information
for it to be in conformity with generally accepted accounting principles.

We conducted our review in accordance with standards established by the 
American Institute of Certified Public Accountants. A review of interim 
financial information consists principally of applying analytical procedures to
financial data and making inquiries of persons responsible for financial and 
accounting matters.  It is substantially less in scope than an audit conducted 
in accordance with generally accepted auditing standards, the objective of
which is the expression of an opinion regarding the financial statements taken 
as a whole.  Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that should
be made to the accompanying financial information as of and for the three-month
and nine-month periods ended September 30, 1998 for it to be in conformity with
generally accepted accounting principles.

As discussed in Note 9 to the condensed consolidated financial statements, TEP
changed its method of estimating unbilled revenue during the three months ended
September 30, 1998.

The financial statements of the Company and of TEP for the year ended December
31, 1997 were audited by other independent accountants whose report dated
February 23, 1998 expressed an unqualified opinion on those statements.



PricewaterhouseCoopers LLP
Phoenix, Arizona
November 6, 1998


<PAGE>


INDEPENDENT ACCOUNTANTS' REVIEW REPORT


UniSource Energy Corporation and its Stockholders
Tucson Electric Power Company
220 West Sixth Street
Tucson, Arizona 85701

We have reviewed the condensed consolidated statements of income of UniSource
Energy Corporation and its subsidiaries (the Company) and Tucson Electric Power
Company (TEP) for the three-month and nine-month periods ended September 30,
1997 and cash flows for the nine-month period ended September 30, 1997.  These
financial statements are the responsibility of the Company's and TEP's
management.

We conducted our review in accordance with standards established by the 
American Institute of Certified Public Accountants.  A review of interim 
financial information consists principally of applying analytical procedures to
financial data and of making inquiries of persons responsible for financial and
accounting matters.  It is substantially less in scope than an audit conducted
in accordance with generally accepted auditing standards, the objective of 
which is the expression of an opinion regarding the financial statements taken
as a whole.  Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that should
be made to such condensed consolidated financial statements for them to be in
conformity with generally accepted accounting principles.
We have previously audited, in accordance with generally accepted auditing
standards, the consolidated balance sheets and statements of capitalization of
the Company and TEP as of December 31, 1997 and the related statements of
income, cash flows, and changes in stockholders' equity (deficit) for the year
then ended (not presented herein);and in our report dated February 23, 1998, we
expressed an unqualified opinion on those consolidated financial statements. In
our opinion, the information set forth in the accompanying condensed
consolidated balance sheets as of December 31, 1997 is fairly stated, in all
material respects, in relation to the consolidated balance sheets from which
they have been derived.



DELOITTE & TOUCHE LLP
Tucson, Arizona
February 23, 1998


<PAGE>


                        PART I - FINANCIAL INFORMATION

Item 1.  FINANCIAL STATEMENTS
- -----------------------------------------------------------------------------

The weather causes seasonal fluctuations in UniSource Energy's sales. As a
result, quarterly results are not indicative of annual operating results. The
quarterly financial statements that follow are unaudited but reflect all
normal recurring accruals and other adjustments which we believe are
necessary for a fair presentation of the results for the interim periods
presented. Also see Item 2. - Management's Discussion and Analysis of
Financial Condition and Results of Operations.  This quarterly report should
be reviewed in conjunction with the Company's 1997 Form 10-K.

UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME

                                                       Three Months Ended
                                                          September 30,
                                                         1998       1997
                                                     -Thousands of Dollars-
Operating Revenues
 Retail Customers                                     $196,398    $201,566
 Amortization of MSR Option Gain Regulatory Liability        -           -
 Sales for Resale                                       56,831      29,523
                                                      ---------   ---------
    Total Operating Revenues                           253,229     231,089
                                                      ---------   ---------
Operating Expenses
 Fuel and Purchased Power                               94,705      66,243
 Capital Lease Expense                                  25,469      25,786
 Amortization of Springerville Unit 1 Allowance         (7,631)     (7,009)
 Other Operations                                       24,980      28,402
 Maintenance and Repairs                                 8,172       8,284
 Depreciation and Amortization                          22,033      21,598
 Taxes Other Than Income Taxes                          12,594      12,517
 Income Taxes                                           18,297      19,158
                                                      ---------   ---------
    Total Operating Expenses                           198,619     174,979
                                                      ---------   ---------
      Operating Income                                  54,610      56,110
                                                      ---------   ---------

Other Income (Deductions)
 Income Taxes                                             (974)     13,337
 Reversal of Loss Provision                                  -           -
 Interest Income                                         3,075       1,996
 Unregulated Energy Businesses - Net                     5,698      (1,648)
 Other                                                     536         434
                                                      ---------   ---------
    Total Other Income (Deductions)                      8,335      14,119
                                                      ---------   ---------

Interest Expense
 Long-Term Debt                                         18,591      16,896
 Interest Imputed on Losses Recorded at Present Value    8,544       8,101
 Other                                                   2,137       1,817
                                                      ---------   ---------
    Total Interest Expense                              29,272      26,814
                                                      ---------   ---------

Net Income                                            $ 33,673    $ 43,415
                                                      =========   =========


Average Shares of Common Stock Outstanding (000)        32,157      32,136
                                                      =========   =========

Basic Earnings per Share                                 $1.05       $1.35
                                                      =========   =========
Diluted Earnings per Share                               $1.05       $1.34
                                                      =========   =========

See Notes to Condensed Consolidated Financial Statements.
UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME

                                                        Nine Months Ended
                                                          September 30,
                                                         1998       1997
                                                     -Thousands of Dollars-
Operating Revenues
 Retail Customers                                     $485,137    $490,752
 Amortization of MSR Option Gain Regulatory Liability        -       8,105
 Sales for Resale                                      108,636      69,483
                                                      ---------   ---------
    Total Operating Revenues                           593,773     568,340
                                                      ---------   ---------
Operating Expenses
 Fuel and Purchased Power                              199,798     163,382
 Capital Lease Expense                                  77,805      78,450
 Amortization of Springerville Unit 1 Allowance        (22,892)    (21,028)
 Other Operations                                       78,408      82,785
 Maintenance and Repairs                                27,327      29,899
 Depreciation and Amortization                          67,479      64,817
 Taxes Other Than Income Taxes                          38,154      38,235
 Income Taxes                                           19,398      21,070
                                                      ---------   ---------
    Total Operating Expenses                           485,477     457,610
                                                      ---------   ---------
      Operating Income                                 108,296     110,730
                                                      ---------   ---------

Other Income (Deductions)
 Income Taxes                                            1,411      39,280
 Reversal of Loss Provision                                  -      10,154
 Interest Income                                         8,315       6,602
 Unregulated Energy Businesses - Net                    (3,987)     (2,092)
 Other                                                   2,480      (1,057)
                                                      ---------   ---------
    Total Other Income (Deductions)                      8,219      52,887
                                                      ---------   ---------

Interest Expense
 Long-Term Debt                                         55,494      47,673
 Interest Imputed on Losses Recorded at Present Value   25,634      24,555
 Other                                                   7,691       6,581
                                                      ---------   ---------
    Total Interest Expense                              88,819      78,809
                                                      ---------   ---------

Net Income                                            $ 27,696    $ 84,808
                                                      =========   =========


Average Shares of Common Stock Outstanding (000)        32,144      32,138
                                                      =========   =========

Basic Earnings per Share                              $   0.86    $   2.64
                                                      =========   =========
Diluted Earnings per Share                            $   0.86    $   2.63
                                                      =========   =========

See Notes to Condensed Consolidated Financial Statements.
UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

                                                        Nine Months Ended
                                                          September 30,
                                                         1998       1997
                                                     -Thousands of Dollars-
Cash Flows from Operating Activities
  Cash Receipts from Retail Customers                 $494,694    $496,765
  Cash Receipts from Sales for Resale                  100,228      67,850
  Fuel and Purchased Power Costs Paid                 (177,805)   (154,333)
  Wages Paid, Net of Amounts Capitalized               (52,666)    (48,115)
  Payment of Other Operations and Maintenance Costs    (68,757)    (67,617)
  Capital Lease Interest Paid                          (80,642)    (80,469)
  Taxes Paid, Net of Amounts Capitalized               (62,821)    (60,735)
  Interest Paid, Net of Amounts Capitalized            (57,982)    (47,057)
  Contract Termination Fee Paid                        (10,000)    (40,000)
  Income Taxes Paid                                         (3)     (1,050)
  Emission Allowance Inventory Sales                    11,368          39
  Interest Received                                      7,873       6,344
  Other                                                    477       1,529
                                                      ---------   ---------
    Net Cash Flows - Operating Activities              103,964      73,151
                                                      ---------   ---------

Cash Flows from Investing Activities
  Construction Expenditures                            (54,786)    (47,937)
  Investments in Joint Ventures                         (7,103)     (3,998)
  Other                                                    (36)        868
                                                      ---------   ---------
    Net Cash Flows - Investing Activities              (61,925)    (51,067)
                                                      ---------   ---------

Cash Flows from Financing Activities
  Proceeds from Issuance of Long-Term Debt              99,021      13,257
  Payments to Retire Long-Term Debt                    (99,472)       (500)
  Payments on Renewable Term Loan                            -     (31,000)
  Payments to Retire Capital Lease Obligations         (17,373)    (13,969)
  Other                                                 (5,941)       (381)
                                                      ---------   ---------
    Net Cash Flows - Financing Activities              (23,765)    (32,593)
                                                      ---------   ---------

Net Increase (Decrease) in Cash and Cash Equivalents    18,274     (10,509)
Cash and Cash Equivalents, Beginning of Year           146,256     130,291
                                                      ---------   ---------
Cash and Cash Equivalents, End of Period              $164,530    $119,782
                                                      =========   =========











See Notes to Condensed Consolidated Financial Statements.
UNISOURCE ENERGY CORPORATION
SUPPLEMENTAL CONDENSED CONSOLIDATED CASH FLOW INFORMATION


                                                        Nine Months Ended
                                                          September 30,
                                                         1998       1997
                                                     -Thousands of Dollars-

Net Income                                            $ 27,696    $ 84,808
Adjustments to Reconcile Net Income
   to Net Operating Cash Flows
  Depreciation and Amortization Expense                 67,479      64,817
  Deferred Income Taxes and Investment Tax Credits-Net  14,768     (19,260)
  Lease Payments Deferred                                4,127       6,771
  Amortization of Regulatory Assets & Liabilities,
   Net of Interest Imputed on Losses Recorded at
   Present Value                                         2,742      (4,578)
  Deferred Contract Termination Fee                     (7,115)    (39,038)
  Loss (Unremitted Earnings) of Unconsolidated
   Subsidiaries                                          6,373        (515)
  Emission Allowances                                   11,368          39
  Reversal of Loss Provision                                 -     (10,154)
  Other                                                  1,842         236
  Changes in Assets and Liabilities which Provided
   (Used) Cash Exclusive of Changes Shown Separately
    Accounts Receivable                                (36,001)    (34,964)
    Materials and Fuel                                  (3,405)     (6,900)
    Accounts Payable                                     7,740       7,805
    Other Current Assets and Liabilities                 7,791      20,763
    Other Deferred Assets and Liabilities               (1,441)      3,321
                                                      ---------   ---------
Net Cash Flows - Operating Activities                 $103,964    $ 73,151
                                                      =========   =========

Non-Cash Investing and Financing Activities (these activities do not affect
the statements of cash flows):
See Note 5 - Long Term Debt for a description of non-cash financing
activities in 1998.  Additionally, the proceeds from the issuance of $111.8
million of Pollution Control Revenue Bonds in April 1997 were held in trust
and used in June 1997 to redeem $111.8 million of previously issued bonds.


















See Notes to Condensed Consolidated Financial Statements.
UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED BALANCE SHEETS


                                                 September 30,   December 31,
                                                     1998           1997
ASSETS                                             - Thousands of Dollars -
Utility Plant
  Plant in Service                                  $2,246,957  $2,194,150
  Utility Plant Under Capital Leases                   886,901     893,064
  Construction Work in Progress                         71,406      72,404
                                                    ----------- -----------
    Total Utility Plant                              3,205,264   3,159,618
  Less Accumulated Depreciation and Amortization    (1,037,985)   (982,621)
  Less Accumulated Amortization of Capital Leases      (81,287)    (73,728)
  Less Springerville Unit 1 Allowance                 (170,498)   (167,756)
                                                    ----------- -----------
    Total Utility Plant - Net                        1,915,494   1,935,513
                                                    ----------- -----------

Investments and Other Property                          84,283      79,471
                                                    ----------- -----------

Current Assets
  Cash and Cash Equivalents                            164,530     146,256
  Accounts Receivable                                  107,226      71,225
  Materials and Fuel                                    38,155      34,005
  Deferred Income Taxes - Current                        6,537      14,910
  Other                                                 25,009      22,954
                                                    ----------- -----------
    Total Current Assets                               341,457     289,350
                                                    ----------- -----------

Deferred Debits - Regulatory Assets
  Income Taxes Recoverable Through Future Rates        159,333     170,034
  Deferred Springerville Common Facility Costs          56,317      58,222
  Deferred Springerville Contract Termination Fee       45,192      48,077
  Deferred Springerville Unit 2 Costs                    4,621      11,590
  Deferred Lease Expense                                10,116      11,571
  Other Regulatory Assets                               16,937      11,089
Deferred Debits - Other                                 22,165      19,492
                                                    ----------- -----------
    Total Deferred Debits                              314,681     330,075
                                                    ----------- -----------
Total Assets                                        $2,655,915  $2,634,409
                                                    =========== ===========













See Notes to Condensed Consolidated Financial Statements.
UNISOURCE ENERGY CORPORATION
COMPARATIVE CONDENSED CONSOLIDATED BALANCE SHEETS


                                                 September 30,   December 31,
                                                     1998          1997
CAPITALIZATION AND OTHER LIABILITIES               - Thousands of Dollars -
Capitalization
  Common Stock                                      $  639,320  $  638,904
  Accumulated Deficit                                 (394,330)   (422,026)
                                                     ----------- -----------
  Common Stock Equity                                  244,990     216,878
  Capital Lease Obligations                            887,116     890,257
  Long-Term Debt                                     1,214,423   1,215,120
                                                    ----------- -----------
    Total Capitalization                             2,346,529   2,322,255
                                                    ----------- -----------

Current Liabilities
  Current Obligations Under Capital Leases              11,698      14,552
  Current Maturities of Long-Term Debt                   1,725         500
  Accounts Payable                                      42,649      34,909
  Interest Accrued                                      44,674      64,812
  Taxes Accrued                                         37,918      24,397
  Contract Termination Fee Payable                           -      10,000
  Other                                                 16,871      19,051
                                                    ----------- -----------
    Total Current Liabilities                          155,535     168,221
                                                    ----------- -----------

Deferred Credits and Other Liabilities
  Deferred Income Taxes - Noncurrent                    75,106      77,606
  Accumulated Deferred Investment Tax Credits
   Regulatory Liability                                 10,099      11,905
  Emission Allowance Gain Regulatory Liability          31,346      17,591
  Other                                                 37,300      36,831
                                                    ----------- -----------
    Total Deferred Credits and Other Liabilities       153,851     143,933
                                                    ----------- -----------
Total Capitalization and Other Liabilities          $2,655,915  $2,634,409
                                                    =========== ===========


















See Notes to Condensed Consolidated Financial Statements.
TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME

The weather causes seasonal fluctuations in TEP's sales. As a result,
quarterly results are not indicative of annual operating results. The
quarterly financial statements that follow are unaudited but reflect all
normal recurring accruals and other adjustments which we believe are
necessary for a fair presentation of the results for the interim periods
presented. Also see Item 2. - Management's Discussion and Analysis of
Financial Condition and Results of Operations.  This quarterly report should
be reviewed in conjunction with the TEP's 1997 Form 10-K.
TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME

                                                       Three Months Ended
                                                          September 30,
                                                         1998       1997
                                                     -Thousands of Dollars-
Operating Revenues
 Retail Customers                                     $196,449    $201,566
 Amortization of MSR Option Gain Regulatory Liability        -           -
 Sales for Resale                                       56,831      29,523
                                                      ---------   ---------
    Total Operating Revenues                           253,280     231,089
                                                      ---------   ---------
Operating Expenses
 Fuel and Purchased Power                               94,705      66,243
 Capital Lease Expense                                  25,469      25,786
 Amortization of Springerville Unit 1 Allowance         (7,631)     (7,009)
 Other Operations                                       24,980      28,402
 Maintenance and Repairs                                 8,172       8,284
 Depreciation and Amortization                          22,033      21,598
 Taxes Other Than Income Taxes                          12,594      12,517
 Income Taxes                                           18,297      19,158
                                                      ---------   ---------
    Total Operating Expenses                           198,619     174,979
                                                      ---------   ---------
      Operating Income                                  54,661      56,110
                                                      ---------   ---------

Other Income (Deductions)
 Income Taxes                                           (1,924)     13,337
 Reversal of Loss Provision                                  -           -
 Interest Income                                         3,081       1,996
 Interest Income-Note Receivable from UniSource Energy   2,352           -
 Other                                                     476      (1,214)
                                                      ---------   ---------
    Total Other Income (Deductions)                      3,985      14,119
                                                      ---------   ---------

Interest Expense
 Long-Term Debt                                         18,591      16,896
 Interest Imputed on Losses Recorded at Present Value    8,544       8,101
 Other                                                   2,137       1,817
                                                      ---------   ---------
    Total Interest Expense                              29,272      26,814
                                                      ---------   ---------

Net Income                                            $ 29,374    $ 43,415
                                                      =========   =========










See Notes to Condensed Consolidated Financial Statements.
TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF INCOME

                                                        Nine Months Ended
                                                          September 30,
                                                         1998       1997
                                                     -Thousands of Dollars-
Operating Revenues
 Retail Customers                                     $485,333    $490,752
 Amortization of MSR Option Gain Regulatory Liability        -       8,105
 Sales for Resale                                      108,636      69,483
                                                      ---------   ---------
    Total Operating Revenues                           593,969     568,340
                                                      ---------   ---------
Operating Expenses
 Fuel and Purchased Power                              199,798     163,382
 Capital Lease Expense                                  77,805      78,450
 Amortization of Springerville Unit 1 Allowance        (22,892)    (21,028)
 Other Operations                                       78,408      82,785
 Maintenance and Repairs                                27,327      29,899
 Depreciation and Amortization                          67,479      64,817
 Taxes Other Than Income Taxes                          38,154      38,235
 Income Taxes                                           19,398      21,070
                                                      ---------   ---------
    Total Operating Expenses                           485,477     457,610
                                                      ---------   ---------
      Operating Income                                 108,492     110,730
                                                      ---------   ---------

Other Income (Deductions)
 Income Taxes                                           (1,408)     39,280
 Reversal of Loss Provision                                  -      10,154
 Interest Income                                         8,323       6,602
 Interest Income-Note Receivable from UniSource Energy   6,978           -
 Other                                                   2,274      (3,149)
                                                      ---------   ---------
    Total Other Income (Deductions)                     16,167      52,887
                                                      ---------   ---------

Interest Expense
 Long-Term Debt                                         55,494      47,673
 Interest Imputed on Losses Recorded at Present Value   25,634      24,555
 Other                                                   7,691       6,581
                                                      ---------   ---------
    Total Interest Expense                              88,819      78,809
                                                      ---------   ---------

Net Income                                            $ 35,840    $ 84,808
                                                      =========   =========










See Notes to Condensed Consolidated Financial Statements.
TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

                                                        Nine Months Ended
                                                          September 30,
                                                         1998       1997
                                                     -Thousands of Dollars-
Cash Flows from Operating Activities
  Cash Receipts from Retail Customers                 $494,694    $496,765
  Cash Receipts from Sales for Resale                  100,228      67,850
  Fuel and Purchased Power Costs Paid                 (177,805)   (154,333)
  Wages Paid, Net of Amounts Capitalized               (50,300)    (48,115)
  Payment of Other Operations and Maintenance Costs    (63,992)    (67,617)
  Capital Lease Interest Paid                          (80,642)    (80,469)
  Taxes Paid, Net of Amounts Capitalized               (62,733)    (60,735)
  Interest Paid, Net of Amounts Capitalized            (57,982)    (47,057)
  Contract Termination Fee Paid                        (10,000)    (40,000)
  Income Taxes Paid                                         (3)     (1,050)
  Emission Allowance Inventory Sales                    11,368          39
  Interest Received                                      6,472       6,344
  Other                                                    936       1,529
                                                      ---------   ---------
    Net Cash Flows - Operating Activities              110,241      73,151
                                                      ---------   ---------

Cash Flows from Investing Activities
  Construction Expenditures                            (54,788)    (47,937)
  Transfer of MEH Cash to UniSource Energy             (45,412)          -
  Investments in Joint Ventures                              -      (3,998)
  Other                                                    113         868
                                                      ---------   ---------
    Net Cash Flows - Investing Activities             (100,087)    (51,067)
                                                      ---------   ---------

Cash Flows from Financing Activities
  Proceeds from Issuance of Long-Term Debt              99,021      13,257
  Payments to Retire Long-Term Debt                    (99,472)       (500)
  Payments on Renewable Term Loan                            -     (31,000)
  Payments to Retire Capital Lease Obligations         (17,373)    (13,969)
  Other                                                 (6,177)       (381)
                                                      ---------   ---------
    Net Cash Flows - Financing Activities              (24,001)    (32,593)
                                                      ---------   ---------

Net Decrease in Cash and Cash Equivalents              (13,847)    (10,509)
Cash and Cash Equivalents, Beginning of Year           146,256     130,291
                                                      ---------   ---------
Cash and Cash Equivalents, End of Period              $132,409    $119,782
                                                      =========   =========










See Notes to Condensed Consolidated Financial Statements.
TUCSON ELECTRIC POWER COMPANY
SUPPLEMENTAL CONDENSED CONSOLIDATED CASH FLOW INFORMATION


                                                        Nine Months Ended
                                                          September 30,
                                                         1998       1997
                                                     -Thousands of Dollars-

Net Income                                            $ 35,840  $  84,808
Adjustments to Reconcile Net Income to Net
   Operating Cash Flows
  Depreciation and Amortization Expense                 67,479     64,817
  Deferred Income Taxes and
   Investment Tax Credits - Net                         20,877    (19,260)
  Lease Payments Deferred                                4,127      6,771
  Amortization of Regulatory Assets & Liabilities, Net
   of Interest Imputed on Losses Recorded at
   Present Value                                         2,742     (4,578)
  Deferred Contract Termination Fee                     (7,115)   (39,038)
  Unremitted Earnings of Unconsolidated Subsidiaries      (753)      (515)
  Emission Allowances                                   11,368         39
  Reversal of Loss Provision                                 -    (10,154)
  Interest Income-Note Receivable from UniSource
   Energy                                               (6,978)         -
  Other                                                  3,196        236
  Changes in Assets and Liabilities which Provided
   (Used) Cash Exclusive of Changes Shown Separately
    Accounts Receivable                                (36,082)   (34,964)
    Materials and Fuel                                  (3,406)    (6,900)
    Accounts Payable                                     8,641      7,805
    Other Current Assets and Liabilities                11,802     20,763
    Other Deferred Assets and Liabilities               (1,497)     3,321
                                                      ---------   ---------
Net Cash Flows - Operating Activities                 $110,241    $73,151
                                                      =========   =========

Non-Cash Investing and Financing Activities (these activities do not affect
the statements of cash flows):
See Note 3 - Transfer of MEH from TEP to UniSource Energy and Note 5 - Long
Term Debt for a description of non-cash investing and financing activities in
1998.  Additionally, the proceeds from the issuance of $111.8 million of
Pollution Control Revenue Bonds in April 1997 were held in trust and used in
June 1997 to redeem $111.8 million of previously issued bonds.















See Notes to Condensed Consolidated Financial Statements.
TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED BALANCE SHEETS


                                                 September 30,  December 31,
                                                     1998          1997
ASSETS                                             - Thousands of Dollars -
Utility Plant
  Plant in Service                                  $2,246,957  $2,194,150
  Utility Plant Under Capital Leases                   886,901     893,064
  Construction Work in Progress                         71,406      72,404
                                                    ----------- -----------
    Total Utility Plant                              3,205,264   3,159,618
  Less Accumulated Depreciation and Amortization    (1,037,985)   (982,621)
  Less Accumulated Amortization of Capital Leases      (81,287)    (73,728)
  Less Springerville Unit 1 Allowance                 (170,498)   (167,756)
                                                    ----------- -----------
    Total Utility Plant - Net                        1,915,494   1,935,513
                                                    ----------- -----------

Investments and Other Property                          62,195      79,471
                                                   ----------- -----------

Note Receivable from UniSource Energy                   77,110           -
                                                    ---------- -----------
Current Assets

  Cash and Cash Equivalents                            132,409     146,256
  Accounts Receivable                                  106,397      71,225
  Materials and Fuel                                    38,116      34,005
  Deferred Income Taxes - Current                        6,537      14,910
  Other                                                 20,094      22,954
                                                    ----------- -----------
    Total Current Assets                               303,553     289,350
                                                    ----------- -----------

Deferred Debits - Regulatory Assets
  Income Taxes Recoverable Through Future Rates        159,333     170,034
  Deferred Springerville Common Facility Costs          56,317      58,222
  Deferred Springerville Contract Termination Fee       45,192      48,077
  Deferred Springerville Unit 2 Costs                    4,621      11,590
  Deferred Lease Expense                                10,116      11,571
  Other Regulatory Assets                               16,937      11,089
Deferred Debits - Other                                 22,165      19,492
                                                    ----------- -----------
    Total Deferred Debits                              314,681     330,075
                                                    ----------- -----------
Total Assets                                        $2,673,033  $2,634,409
                                                    =========== ===========










See Notes to Condensed Consolidated Financial Statements.
TUCSON ELECTRIC POWER COMPANY
COMPARATIVE CONDENSED CONSOLIDATED BALANCE SHEETS


                                                September 30,  December 31,
                                                       1998        1997
CAPITALIZATION AND OTHER LIABILITIES               - Thousands of Dollars -
Capitalization
  Common Stock                                      $  645,928  $  645,261
  Capital Stock Expense                                 (6,357)     (6,357)
  Accumulated Deficit                                 (386,186)   (422,026)
                                                    ----------- -----------
  Common Stock Equity                                  253,385     216,878
  Capital Lease Obligations                            887,116     890,257
  Long-Term Debt                                     1,214,423   1,215,120
                                                    ----------- -----------
    Total Capitalization                             2,354,924   2,322,255
                                                    ----------- -----------

Current Liabilities
  Current Obligations Under Capital Leases              11,698      14,552
  Current Maturities of Long-Term Debt                   1,725         500
  Accounts Payable                                      42,832      34,909
  Interest Accrued                                      44,674      64,812
  Taxes Accrued                                         37,902      24,397
  Contract Termination Fee Payable                           -      10,000
  Other                                                 16,871      19,051
                                                    ----------- -----------
    Total Current Liabilities                          155,702     168,221
                                                    ----------- -----------

Deferred Credits and Other Liabilities
  Deferred Income Taxes - Noncurrent                    83,747      77,606
  Accumulated Deferred Investment Tax Credits
   Regulatory Liability                                 10,099      11,905
  Emission Allowance Gain Regulatory Liability          31,346      17,591
  Other                                                 37,215      36,831
                                                    ----------- -----------
    Total Deferred Credits and Other Liabilities       162,407     143,933
                                                    ----------- -----------
Total Capitalization and Other Liabilities          $2,673,033  $2,634,409
                                                    =========== ===========

















See Notes to Condensed Consolidated Financial Statements.





NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
- ---------------------------------------------------------------------

NOTE 1.  ACCOUNTING FOR THE EFFECTS OF REGULATION

  Accounting Implications

     The ACC regulates TEP's utility business.  TEP generally uses the
same accounting policies and practices used by nonregulated companies
for financial reporting under generally accepted accounting principles.
However, sometimes these principles, such as FAS 71, require special
accounting treatment for regulated companies to show the effect of
regulation.  For example, in setting TEP's retail rates, the ACC may
not currently allow TEP to charge its customers to recover certain
expenses but; instead, require that these expenses be charged to
customers in the future.  In this situation, FAS 71 requires that TEP
not show these expenses on its current income statements but "defer"
these items and show them as "regulatory assets" on the balance sheet
until TEP is allowed to charge its customers.  TEP then amortizes these
items to the income statement as charges are billed to customers.
Similarly, certain items of revenue may be deferred as regulatory
liabilities, which are also eventually amortized to the income
statement.

     We have recorded regulatory assets and liabilities in our balance
sheets in accordance with FAS 71.  A regulated company must satisfy
certain conditions to apply the accounting policies and practices of
FAS 71.  These conditions include:

 - an independent regulator sets rates;
 - the regulator sets the rates to cover specific costs of delivering
service; and
 - the service territory lacks competitive pressures to reduce rates
below the rates set by the regulator.

     We periodically assess whether we continue to meet these
conditions.  If we were required to stop applying FAS 71 to all or a
portion of TEP's regulated utility operations, we would write off the
related balances of TEP's regulatory assets and liabilities as a charge
in our income statement.  In that event, our earnings would be reduced
by the net amount of regulatory assets and liabilities, after
applicable deferred income taxes.  Based on the balances of TEP's
regulatory assets and liabilities at September 30, 1998, if we ceased
applying FAS 71 to all of TEP's regulated operations, we would record
an extraordinary loss of approximately $150 million, net of the related
deferred income tax benefit of $101 million.  Approximately 62% of
TEP's net regulatory assets on the balance sheet relate to electric
generation.  While our cash flows may be affected by regulatory orders
and market conditions, our cash flows would not be affected if we
ceased to apply FAS 71.

     If we stop applying FAS 71, we would need to evaluate the
likelihood that we could recover the cost of TEP's electric plant in
the marketplace.  If undiscounted cash flows are less than the carrying
value of those plant assets that we continue to own, then we would need
to write off as an expense a portion of those plant assets to reflect
their current market value.  Plant assets to be disposed of would be
written down to fair value if it is less than carrying value.  We
cannot predict if we would write off any plant assets as a result of
these evaluations.

  Recent Events That May Impact TEP's Application of FAS 71

     In December 1996, the ACC adopted rules (Retail Electric
Competition Rules) which would introduce retail electric competition in
Arizona.  If implemented as adopted, the rules would require each
"Affected Utility" (TEP, Arizona Public Service Company, Citizens
Utilities Company and several cooperatives) to open its retail service
area to competing electric service providers on a phased-in basis over
the period 1999 to 2003.  On August 5, 1998, the ACC adopted amendments
to the rules which, in part, provide a two-year phase-in schedule in
which all retail customers will have access to competitive generation
by January 1, 2001.

     On June 22, 1998, the ACC adopted an order requiring Arizona
utilities to choose from one of two options for recovery of stranded
costs resulting from the implementation of retail electric competition.
Stranded costs represent costs recoverable by a utility in a regulated
market that would not likely be recovered through the prices charged
for electricity and other services in a competitive market.  The two
options are:

(1)  Divestiture/Auction Methodology
 - This method requires the sale of all electric generation assets
through an auction by January 1, 2001;
 - Stranded costs are calculated as the difference between book value
of generation assets (including related regulatory assets) and the
proceeds from the sale;
 - 100% of the stranded costs will be recovered over a 10-year period,
including a return on the unamortized balance;
 - All customers of Affected Utilities will pay for the stranded costs.

(2)  Transition Revenues Methodology
 - The ACC would determine the revenues necessary to maintain financial
integrity (such as avoiding default under currently existing financial
instruments); and
 - Affected Utilities would recover the determined amount of stranded
costs over a period of ten years.

     The order encourages, but does not require, full divestiture of
generating assets through an auction.  The order states that only those
Affected Utilities choosing divestiture through the Divestiture/Auction
Methodology shall have the opportunity to recover 100% of unmitigated
stranded costs.  The order also specifies that some form of rate cap
will be in place for customers on Standard Offer electric service
during the transition period.

     On August 21, 1998, TEP filed a proposed plan for divestiture of
generating assets and stranded cost recovery with the ACC.  Under the
plan, TEP proposed to divest all of its generating assets and
associated property as a method of recovering stranded costs.  In its
filing with the ACC, TEP estimated its stranded costs may range from
$600 million to $1.1 billion.

  ACC Staff Stranded Cost Recovery Agreement (SCR Agreement)

     On November 4, 1998, TEP reached a settlement agreement, the SCR
Agreement, with the ACC Staff for approval of its plan to divest
generation assets and for 100% recovery of stranded costs.  The SCR
Agreement also supports a Memorandum of Understanding (MOU) between TEP
and APS to exchange TEP's interests in the Navajo and Four Corners
Generating Stations for certain high voltage transmission assets
currently owned by APS.  The SCR Agreement is subject to ACC approval.
The ACC Staff has requested that the ACC consider the SCR Agreement
beginning on November 20, 1998.  However, no date has been set.  If the
ACC does not approve the SCR Agreement, without changes, by November
25, 1998, the SCR Agreement would be considered withdrawn by both TEP
and the ACC Staff.  The SCR Agreement includes the following:

 - Stranded costs will include:
   -- the difference between the book value of generation assets under
traditional regulation and their market value determined through an
auction process;
   -- reasonable costs incurred for premiums, penalties and/or other
payments necessary to implement divestiture; and
   -- reasonable employee severance and retraining costs necessitated
by competition.

 - TEP will divest its generation assets, pursuant to specified auction
protocols, by December 31, 2000.  TEP would also seek to terminate its
obligations under the leveraged leases relating to generating assets.
TEP expects cash payments to lease participants would be required in
connection with any such terminations.  In order to complete
divestiture of both owned and leased assets, TEP also expects to be
required to make cash payments to various creditors and other parties.
In addition, a substantial portion of the generating assets have been
financed through tax-exempt bonds.  TEP expects that such bonds would
need to be redeemed or defeased as a result of the divestiture.

 - If the auction of one or more generating units is unsuccessful, TEP
would seek to recover stranded costs relating to such unit(s) based on
the "Net Revenues Lost" approach.  Under that approach, stranded cost
is determined as the net present value of the annual differences
between the expected revenues under traditional regulation and those
likely to be received after the introduction of retail competition.

  -  TEP  would recover 100% of its stranded costs and a return on  any
unamortized  balance over an eight- to ten-year period ending  December
31, 2008 as follows:

   -- Interim Transition Charge (ITC)
      Beginning January 1, 1999 through the date of divestiture (no
      later than December 31, 2000), an ITC would be recovered from
      customers under the Standard Offer and from those customers
      purchasing energy from competitive suppliers.   The ITC will be
      calculated as the difference between the embedded cost of
      generation included in current rates and a market price for
      electric power;

   -- Competition Transition Charge (CTC)
      Following divestiture, a CTC will be collected from all
      distribution customers for a period of six to eight years.  The
      CTC will include recovery of a carrying cost equal to TEP's cost
      of capital based on a capital structure consisting of 35 percent
      equity and 65 percent debt.

 - TEP expects that the cash TEP will pay to divest will exceed the
proceeds from the sale of owned assets.  To finance the cash
requirements of divestiture, TEP would be permitted to "securitize" the
CTC by issuing special bonds through a special purpose entity.  If the
SCR Agreement is approved by the ACC, which is a separate branch of
government in Arizona, it would represent an administrative (not
legislated) authority to securitize stranded costs.  To date, similar
securitizations have been issued under legislative rather than
administrative authority.

  -  Open access will begin in TEP's retail market on January 1, 1999,
consistent with the Retail Electric Competition Rules.

 - TEP's retail customers who remain on the Standard Offer will not
experience any increases in their current electric prices during the
transition period (prior to January 1, 2001.)  Rather, retail customers
who continue to purchase their energy requirements from TEP will
benefit from the base price decreases described in Note 7.  Rate
Matters.  After December 31, 2000, retail prices will include the price
TEP has to pay to acquire power in the competitive generation market.

 - The SCR Agreement will resolve all pending litigation between TEP
and the ACC involving the Retail Electric Competition Rules.

 - Transmission Assets

   -- TEP will establish a new subsidiary (Transmission Subsidiary) by
      December 31, 2000, to hold all of its transmission assets.  TEP
      will acquire transmission assets and then contribute these assets
      to the Transmission Subsidiary.  The SCR Agreement allows TEP to
      acquire all 345 kV and 500 kV transmission facilities owned by
      APS.

   -- The SCR Agreement supports an exchange of TEP's ownership
      interests in the Navajo Generating Station and Four Corners
      Generating Station for these transmission assets of APS.  TEP
      currently owns 7.5 percent of Units 1, 2 and 3 at Navajo, a total
      of 168 MW, and 7 percent of Units 4 and 5 at Four Corners, a
      total of 110 MW.  Under the MOU, the closing of this transaction
      is to be on or before January 2, 2001.  Upon completion of an
      asset exchange, TEP would enter into a four-year power sales
      contract with APS to purchase 200 MWs from these units.

   -- TEP expects to have a pre-tax gain from the exchange.  This
      assumes the market value for APS' transmission assets is greater
      than the net book value of TEP's generation assets at closing.
      The SCR Agreement allows for 35% of the net book value of
      transmission assets to be used to capitalize the Transmission
      Subsidiary.  TEP would also establish a regulatory liability in
      an equal amount.  Interest earned on the regulatory liability,
      based on the after-tax cost of capital of the stranded cost
      securitized balance, will be credited to retail customers during
      the CTC collection period.  Additionally, the regulatory
      liability will be amortized to retail customers over 10 years on
      a straight-line basis beginning after the conclusion of the CTC.

     We expect that TEP will cease to account for its generation
operations using FAS 71 at the time the ACC approves the SCR Agreement
or another cost recovery plan specific to TEP which includes the
specific percentage of stranded costs that TEP can recover and a cost
recovery method.  The amount and method of recovery that the ACC
approves for TEP will determine whether write-offs will be incurred at
that time.  TEP expects the ACC to make a decision and to issue a final
order regarding its stranded cost recovery plan by year-end 1998.
However, the specific amount of stranded costs won't be determined
until the divestiture plan is implemented.  We are unable to predict
the amount of write-offs, if any, that may be incurred at that time.

      In  May  1998  the  Arizona State Legislature  approved  and  the
Governor  signed  a  bill regarding retail electric  competition.   The
legislation requires the introduction of customer choice to 20% of each
public  power  entity's  retail load by December  31,  1998  with  100%
customer  choice by December 31, 2000.  This legislation  only  relates
directly  to  public  power entities such as  SRP;  however,  the  bill
encourages broader application of the legislation's principles  by  the
ACC  to  the  state's  investor-owned  utilities,  including  TEP,  and
cooperatives.

      We  cannot  predict the outcome of the legislation or  the  ACC's
retail competition rules.  Additionally, federal legislators introduced
several  retail competition initiatives in Congress which,  if  passed,
could  modify or override the actions taken by the ACC or  the  Arizona
Legislature.


NOTE 2.  TAX ASSESSMENTS
- ------------------------

  Arizona Sales Tax Assessments - Coal Sales

     We are protesting sales tax assessments received from the ADOR
alleging that Valencia is liable for sales tax on gross income from
coal sales, transportation and coal-handling services provided to TEP
from November 1985 through May 1996.  Arizona law generally requires
payment of an assessment prior to pursuing the appellate process.  We
have previously paid, under protest, a total of $23 million of the
disputed sales tax assessments.  These payments will be refunded if we
are successful in the appeals process.  In September 1996, the Arizona
Court of Appeals upheld the validity of the assessment issued for the
period November 1985 through March 1990.  In May 1998, the Arizona
Supreme Court remanded the case back to the Arizona Tax Court to be
reheard.

     We have previously recorded an expense and a related liability for
the sales taxes and interest that we believe are probable of incurrence
for the period November 1985 through May 1996.  On May 31, 1996,
Valencia was merged into TEP.  Because TEP now acquires coal directly
from other companies, we do not believe we are liable for sales tax
computed on a basis similar to the assessments described above after
May 31, 1996.  For periods prior to May 31, 1996, we continue to record
an estimated interest expense on the disputed assessments.

  Arizona Sales Tax Assessments - Leases

     The ADOR has issued sales tax assessments to some of TEP's lessors
of generation-related facilities and equipment.  The assessments allege
sales tax liability on a component of rents we paid on the
Springerville Unit 1 Leases, the Springerville Common Facilities
Leases, the Irvington Lease and the Springerville Coal Handling
Facilities Lease from August 1, 1988 to June 30, 1997.  Due to
indemnification provisions in the lease agreements, if the ADOR
prevails, we would be required to reimburse the lessors for the sales
taxes that they pay.  We filed an appeal of the assessments in the
Arizona Tax Court in February 1998.  In July 1998, the Arizona Tax
Court ruled against us on the assessment issued for the period August
1988 through September 1990 on the Irvington lease.  We have appealed
the Tax Court's decision.  Arizona law generally requires payment of an
assessment prior to pursuing the appellate process.  We paid, under
protest, a total of $2 million of the disputed assessments.  These
payments will be refunded if we are successful in the appeals process.

     We have recorded a liability for the probable amount of sales
taxes and interest due as of September 30, 1998.  If the ADOR prevails,
we would need to record an additional expense and related liability.
Even though it is reasonably possible that the resolution of this issue
could result in approximately $22 million of additional sales tax
expense, we do not believe this outcome is likely.  We do not expect
that the resolution of this assessment will have a material negative
impact on the financial statements.  We believe that the ultimate
resolution of this issue will occur over a period of two to four years.

  INCOME TAX ASSESSMENTS

     In February 1998, the IRS issued an income tax assessment for the
1992 and 1993 tax years.  The IRS is challenging our treatment for
income tax purposes of various items relating to the 1992 Financial
Restructuring, including the amount of NOL and ITC generated before
December 1991 that may be used to reduce taxes in future periods.

     Due to the Financial Restructuring, a change in ownership of TEP
occurred for tax purposes in December 1991.  As a result, the use of
the NOL and ITC generated before December 1991 may be limited under the
tax code.  The IRS is challenging our calculation of this limitation.
At September 30, 1998, pre-change federal NOL and ITC carryforwards
were approximately $239 million and $26 million, respectively.  In
addition to the pre-change NOL and ITC which are subject to the
limitation, $166 million of federal NOL at September 30, 1998, is not
subject to the limitation.

     Resolution of this matter is not expected to have a material
adverse impact on the financial statements.


NOTE 3.  TRANSFER OF MEH FROM TEP TO UNISOURCE ENERGY
- -----------------------------------------------------

     On January 1, 1998, TEP became a subsidiary of UniSource Energy.
At the same time, TEP transferred MEH to UniSource Energy and received
as consideration from UniSource Energy a $95 million 10-year promissory
note with a yearly interest rate of 9.78%.  Approximately $25 million
of this note represents a gain to TEP.  TEP has not recorded this gain.
Instead, this gain will be reflected as an increase in TEP's common
equity when UniSource Energy pays the principal portion of the note.
The note receivable appears on TEP's consolidated balance sheet but
does not appear on UniSource Energy's consolidated balance sheet
because intercompany balances and transactions are eliminated when
financial statements are consolidated.

     MEH owns Advanced Energy Technologies, Inc., Millennium Energy
Holdings, Inc., Nations Energy Corporation and Southwest Energy
Solutions, Inc.

     The transfer of MEH's cash balance of $45.4 million as part of the
transfer of MEH to UniSource Energy is included in the Cash Flows from
Investing Activities in TEP's cash flow statement for the nine months
ended September 30, 1998.


NOTE 4.  INVESTMENT IN ENERGY RELATED AFFILIATES
- ------------------------------------------------

  Loans and Guarantees for NEV

     Effective September 1, 1997, Millennium, a wholly-owned subsidiary
of  MEH,  exercised  an  option to acquire  a  50%  ownership  in  NEV.
Concurrent with the exercise of the option, Millennium made  a  capital
contribution in the amount of $0.8 million.

     In December 1997, Millennium committed to provide NEV with $20
million of funding.  At September 30, 1998, NEV had received $19
million in funding under the commitment.  As a result, the remaining
commitment amount available was $1 million at October 31, 1998.
Additionally, in October 1998, NEV issued a $4.7 million promissory
note to Millennium for a $3 million member loan Millennium extended to
NEV in September 1997, and preferred operating return due Millennium
under the terms of NEV's original operating agreement.

     UniSource Energy is the guarantor of $33.6 million of performance
bonds that secure amounts NEV may owe to utility distribution companies
(UDCs) and energy suppliers in connection with NEV's sales to retail
electric customers.  NEV bills its customers for these charges.
UniSource Energy's guarantees are secured by various NEV assets.
Additionally, in August 1998, UniSource Energy agreed to guarantee a
$10 million loan that NEV obtained from an unrelated party.  That loan
is due in 1999.

     NEV has incurred a total loss in excess of $40 million for the
period September 1997 through September 1998.

     From September 1997, the inception of Millennium's ownership in
NEV, through September 30, 1998, Millennium recorded approximately
$23.8 million of NEV losses.  The amount equals the total funds and
unsecured commitments provided by Millennium and UniSource Energy to
NEV.  Accounting principles limit the amount of NEV's loss to be
recorded by Millennium to the total amount invested and committed by
Millennium and UniSource Energy on an unsecured basis.  Should
Millennium or UniSource Energy provide additional unsecured funding to
NEV, the amounts provided would be immediately expensed up to the
lesser of the amount of funding provided or the amount of NEV
cumulative incurred losses in excess of the $23.8 million already
recorded by Millennium and UniSource Energy.  NEV is seeking sources
other than Millennium and UniSource Energy to provide funding.  There
can be no assurance that any such financing will be obtained.

  NEV Technologies

     NEV Technologies, a subsidiary of NEV, and its joint ventures hold
exclusive distribution rights for the AlliedSignal TurboGeneratorTM in
the western U.S. and certain international markets.  In October 1998,
Edison International made a $10 million minority interest equity
investment in NEV Technologies.  NEV Technologies' two joint ventures
are 50 percent owned by Dames & Moore Ventures.  NEV owns the remainder
of NEV Technologies.

  Purchase and Sale of Generating Assets by Nations Energy

     In September 1998, Nations Energy sold a 48% interest in Trigen-
Nations Energy, which owns and operates the 40 MW Coors Brewing Company
power plant in Golden, Colorado.  The $5.8 million (after-tax) gain on
the sale is included in Unregulated Energy Businesses - Net in
UniSource Energy's consolidated income statement.  Following the sale,
Nations Energy owns a 1% percent interest in Trigen-Nations.

     Also, in September 1998, Nations Energy purchased a minority
interest in Corporation Panamena de Energia, S.A. (COPESA) for $7.5
million.  COPESA is an independent power producer which owns and
operates a 43 MW power plant outside of Panama City.  The energy is
sold under a Power Purchase Agreement with an unrelated party.

     In October 1998, Nations Energy paid $8.1 million for a minority
equity interest in a power project located in the Czech Republic.  The
$400 million, 340 MW project is scheduled for completion in late-1999.
Once completed, the generating facility will sell power to a regional
distribution company and to an adjacent industrial complex.


NOTE 5.  LONG-TERM DEBT
- -----------------------

     In March 1998, the Apache County, Arizona Industrial Development
Authority issued $200 million of Pollution Control Revenue Bonds.  The
new bonds, which are unsecured, were sold in three series: Series A
($83.7 million) bears interest at 5.85% and matures in 2028; Series B
($99.8 million) bears interest at 5.875% and matures in 2033; and
Series C ($16.5 million) bears interest at 5.85% and matures in 2026.
The proceeds from the issuance of the new bonds were held in trust and
used in May 1998 to redeem $200 million of previously issued variable
interest rate bonds that would have matured in 2020 and 2021.  Such
issuance and redemption are treated as non-cash transactions to TEP and
are not reflected in the consolidated statement of cash flows.

     In May 1998, TEP exchanged $46.9 million of its existing 12.22%
First Mortgage Bonds due 2000 for the same amount of new 12.22%
Exchange Series First Mortgage Bonds due 2000.  The new bonds have
substantially the same terms and conditions as the existing bonds
except for the elimination of a covenant restricting the payment of
dividends.  Because the exchange was a non-cash transaction, it is not
reflected in the consolidated statement of cash flows.

     In August 1998, TEP issued $140 million of First Collateral Trust
Bonds, Series A, and used the proceeds in September 1998 to redeem all
of its First Mortgage Bonds due in 1999, 2001, 2002 and 2003, as well
as $31.9 million of 12.22% First Mortgage Bonds due 2000 not tendered
for exchange as described above.  Interest rates on the bonds that were
redeemed ranged from 7.55% to 12.22%.  A portion of the proceeds from
the issuance ($43.8 million) was held in trust and used to redeem
certain First Mortgage Bonds described above.  The proceeds from the
issuance that were held in trust and the related redemption of bonds
are treated as non-cash transactions which are not reflected in the
consolidated statement of cash flows.   When TEP redeemed these bonds,
covenants that prohibited TEP from paying common stock dividends so
long as it has an accumulated earnings deficit were eliminated.
Dividends are permitted if certain other, more flexible financial
covenants are met.  The First Collateral Trust Bonds bear interest at
7.50%, mature in 2008, and are secured by an equal aggregate principal
amount of bonds issued under TEP's General First Mortgage and held by
the trustee.

     In November 1998 TEP called $30 million of its 8.50% First
Mortgage Bonds ($57.9 million principal amount outstanding) for
redemption on December 7, 1998.  Such bonds were scheduled to mature in
2009.


NOTE 6.  WARRANT EXCHANGE
- -------------------------

     From August 18, 1998 through October 23, 1998, the Company offered
to exchange outstanding warrants previously issued by TEP for warrants
exercisable into UniSource Energy common stock.  TEP Warrants entitle
the holder of five warrants to purchase one share of TEP common stock
for $16.00.  Currently, UniSource Energy owns 100% of the common stock
of TEP and TEP common stock is not publicly traded.  For each TEP
Warrant surrendered, the holder received:

  -  0.20 1999 UniSource Energy Warrant expiring March 15, 1999; and
  -  0.20 2000 UniSource Energy Warrant expiring December 15, 2000.

Each whole new UniSource Energy Warrant entitles the holder to purchase
one share of UniSource Energy common stock for $16.

After the exchange, the following warrants are outstanding:
  -  1.5 million of 1999 UniSource Energy Warrants;
  -  1.5 million of 2000 UniSource Energy Warrants; and
  -  4.6 million of TEP Warrants expiring December 15, 2002;
     exercisable for 920,000 shares of TEP common stock.  Prior to the
     exchange, there were 12.1 million TEP Warrants outstanding
     exercisable for 2.4 million shares of TEP common stock.


NOTE 7.  RATE MATTERS
- ---------------------

  RATE REDUCTION

     On August 25, 1998, the ACC approved a rate settlement agreement
(Rate Settlement) which provides TEP's retail customers with base price
decreases over the next two years.  This agreement resolves TEP's
application for a price decrease in its Shared Savings Proposal filed
with the ACC on July 9, 1997.  TEP's base price will decrease by the
following percentages:

 - an initial 1.1% (about $7.0 million) decrease effective July 1,
   1998;
 - a second decrease of 1.0% (about $5.5 million) on July 1, 1999; and
 - an additional 1.0% (about $5.5 million) decrease on July 1, 2000.

The latter two decreases will apply to all Standard Offer customers who
do not have or do not choose access to retail competition during the
two-year phase-in of the ACC's Electric Competition Rules beginning
January 1, 1999.

     The Rate Settlement also provides for TEP to mitigate potentially
stranded costs through the accelerated recovery of  the Retail Excess
Capacity Deferrals.  Retail Excess Capacity Deferrals represent
operating and capital costs associated with Springerville Unit 2
capacity which the ACC did not allow TEP to recover in rates until the
1994 and 1996 Rate Orders.  These Retail Excess Capacity Deferrals
totaled $85.1 million and $88.7 million at September 30, 1998 and
December 31, 1997, respectively.  These deferrals are only reflected in
our regulatory calculations.  The accompanying balance sheets do not
include these deferrals as the costs were expensed when incurred for
financial reporting purposes.  The $4.3 million (after-tax) increase in
annual amortization expense decreases the amortization period from 20
years to 7.8 years as of December 31, 1996.  This increase in
amortization expense will be reflected in TEP's regulatory accounting
records but will have no impact on the expenses included in its
financial statements.

  SPRINGERVILLE COAL CONTRACT TERMINATION FEE

     On June 27, 1997, TEP signed an agreement with the coal supplier
for the Springerville Generating Station to terminate the then-existing
coal supply contract and enter into a new, more cost effective contract
with the same supplier.  TEP paid a $50 million termination fee in
three installments:  $30 million paid on June 30, 1997; $10 million
paid on September 30, 1997; and $10 million paid on March 31, 1998.

     TEP asked the ACC to allow the termination fee to be recorded as a
regulatory asset and to be amortized to fuel expense over the 13-year
term of the new agreement.  On July 29, 1997, the ACC issued an interim
accounting order granting the requested treatment until the ACC reached
a final decision.  The ACC reached a final decision and in the Rate
Settlement granted the requested treatment.


NOTE 8.  INCOME TAXES
- ---------------------

     The differences between the income tax expense (benefit) and the
amount obtained by multiplying income before income taxes by the U.S.
statutory federal income tax rate are as follows:

                                            UniSource Energy
                                ---------------------------------------
                                Three Months Ended    Nine Months Ended
                                   September 30,        September 30,
                                 1998        1997     1998        1997
                                ---------------------------------------
                                       - Thousands of Dollars -
Federal Income Tax Expense
 at Statutory Rate        $  19,777   $  17,233   $  14,951   $ 23,309
  State Income Tax Expense,
   Net of Federal Deduction   3,049       2,656       2,304      3,591
  Depreciation Differences
    (Flow Through Basis)        890           -       4,349          -
  Capital Loss Carryforwards      -           -      (4,463)         -
  Investment Tax Credit
   Amortization                (661)       (670)     (1,806)    (2,612)
  Reduction in Valuation
   Allowance                      -     (13,120)          -    (42,413)
  Other                        (223)       (278)       (315)       (85)
                          ----------  ----------  ----------  ---------
Total Expense (Benefit)
 for Federal and State
 Income Taxes             $  22,832   $   5,821   $  15,020   $(18,210)
                          ==========  ==========  ==========  =========

                                                   TEP
                                ---------------------------------------
                                Three Months Ended    Nine Months Ended
                                   September 30,        September 30,
                                 1998        1997     1998        1997
                                ---------------------------------------
                                       - Thousands of Dollars -
Federal Income Tax Expense
 at Statutory Rate        $  17,358   $  17,233   $  19,826   $ 23,309
  State Income Tax Expense,
   Net of Federal Deduction   2,673       2,656       3,054      3,591
  Depreciation Differences
    (Flow Through Basis)        890           -       4,349          -
  Capital Loss Carryforwards      -           -      (4,463)         -
  Investment Tax Credit
   Amortization                (661)       (670)     (1,806)    (2,612)
  Reduction in Valuation
   Allowance                      -     (13,120)          -    (42,413)
  Other                         (39)       (278)       (154)       (85)
                          ----------  ----------  ----------  ---------
Total Expense (Benefit)
 for Federal and State
 Income Taxes             $  20,221   $   5,821   $  20,806   $(18,210)
                          ==========  ==========  ==========  =========


Income taxes are included in the income statements as follows:

                                            UniSource Energy
                               ---------------------------------------
                               Three Months Ended    Nine Months Ended
                                  September 30,        September 30,
                                1998        1997     1998        1997
                               ----------------------------------------
                                       - Thousands of Dollars -
Operating Expenses        $  18,297   $  19,158   $  19,398   $ 21,070
Other Income (Deductions)       974     (13,337)     (1,411)   (39,280)
Unregulated Energy
  Businesses - Net            3,561           -      (2,967)         -
                          ---------   ----------  ----------  ---------
Total Income Tax Expense
 (Benefit)                $  22,832   $   5,821   $  15,020   $(18,210)
                          =========   ==========  ==========  =========

                                                  TEP
                               ---------------------------------------
                               Three Months Ended    Nine Months Ended
                                  September 30,        September 30,
                                1998        1997     1998        1997
                               ---------------------------------------
                                       - Thousands of Dollars -
Operating Expenses        $  18,297   $  19,158   $  19,398   $ 21,070
Other Income (Deductions)     1,924     (13,337)      1,408    (39,280)
                          ---------   ----------  ---------   ---------
Total Income Tax Expense
 (Benefit)                $  20,221   $   5,821   $  20,806   $(18,210)
                          =========   ==========  =========   =========

     The reduction in the valuation allowance and corresponding NOL
benefit in 1997 are primarily due to revisions in the estimated amount
of NOLs that we expect to offset future taxable income.  As of
December 31, 1997, both Unisource Energy and TEP had recorded the
amount of prior period NOL benefit that we expect to utilize on future
income tax returns.  At the present time, we are not able to estimate
future additional amounts of NOL benefit that we may recognize in the
income statements of either Unisource Energy or TEP.  This is because
there are still open tax years for which there may be additional
assessments and because federal and state NOL carryforwards have
varying expiration dates.  We do not expect to recognize additional
amounts of NOL benefit until such items are resolved.


NOTE 9.  CHANGE IN METHOD OF ESTIMATING UNBILLED REVENUES
- ---------------------------------------------------------

In the third quarter of 1998, TEP changed its method of estimating
unbilled revenues to more accurately reflect revenues between months.
If we had continued using the previous method of calculating unbilled
revenues, revenues for the three-months and nine-months ended September
30, 1998 would have been $7.1 million greater.  However, for the twelve
months ending December 31, 1998, we expect that revenues calculated
using the new method will not be significantly different from revenues
calculated under the previous method.


NOTE 10.  NEW ACCOUNTING STANDARD
- ---------------------------------

      In  June  1998, the Financial Accounting Standards  Board  issued
Statement  of  Financial  Accounting  Standards  No.  133  (FAS   133),
Accounting  for  Derivative Instruments and Hedging  Activities.   This
Statement  requires  that  all  derivative  financial  instruments   be
recognized  as  either  assets or liabilities  in  the  balance  sheet.
Measurement is at fair value and if the derivative is not designated as
a  hedging instrument, changes in fair values (i.e., gains and  losses)
are  to  be recognized in earnings in the period of change.  If certain
conditions  are met, a derivative may be designated a hedge,  in  which
case  the  accounting  for changes in fair value  will  depend  on  the
specific  exposure being hedged.  The Company is required to adopt  FAS
133  in the first quarter of 2000.  We are still evaluating the impact,
if  any,  that  the  adoption of FAS 133 will  have  on  our  financial
statements.


NOTE 11.  RECLASSIFICATIONS
- ---------------------------

     Minor reclassifications have been made to the prior year financial
statements to conform to the current year's presentation.


NOTE 12.  REVIEW BY INDEPENDENT PUBLIC ACCOUNTANTS
- --------------------------------------------------

     With respect to the unaudited consolidated financial information
of UniSource Energy and TEP for the three-month and nine-month periods
ended September 30, 1998, PricewaterhouseCoopers LLP reported that they
have applied limited procedures in accordance with professional
standards for a review of such information.  However, their separate
report dated November 6, 1998, appearing herein, states that they did
not audit and they do not express an opinion on that unaudited
consolidated financial information.  PricewaterhouseCoopers LLP has not
carried out any significant or additional audit tests beyond those
which would have been necessary if their report had not been included.
Accordingly, the degree of reliance on their report on such information
should be restricted in light of the limited nature of the review
procedures applied.  PricewaterhouseCoopers LLP is not subject to the
liability provisions of section 11 of the Securities Act of 1933 for
their report on the unaudited consolidated financial information
because that report is not a "report" or a "part" of a registration
statement prepared or certified by PricewaterhouseCoopers LLP within
the meaning of sections 7 and 11 of the Act.


ITEM 2. - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF OPERATIONS
- ----------------------------------------------------------------------

     UniSource Energy is a holding company which owns all of the
outstanding common stock of TEP and MEH.  TEP is an operating public
utility engaged in the generation, purchase, transmission,
distribution and sale of electricity for customers in the greater
Tucson, Arizona area and to wholesale customers.  MEH owns all of the
outstanding common stock of four subsidiaries established for the
purpose of operating or investing in various unregulated energy-
related businesses.

     TEP is the principal subsidiary of UniSource Energy and accounts
for substantially all of its assets, revenues and net income.  The
financial condition and results of operations of TEP are currently the
principal factors affecting the financial condition and results of
operations of UniSource Energy on an annual basis, although losses
from energy-related ventures of MEH and certain of its subsidiaries
and interests have reduced the earnings reported by the Company for
the nine-months ended September 30, 1998.

     Management's Discussion and Analysis explains the general
financial condition and the results of operations for UniSource Energy
and its business subsidiaries including:
     
- -	operating results during the third quarter and the first nine
    months compared with the same periods in the prior year,
- -	the outlook for dividends on common stock,
- -	changes in liquidity and capital resources during the third
    quarter and first nine months of 1998, and
- -	expectations of identifiable material trends which may affect our
    business in the future.

     You should read Management's Discussion and Analysis along with
the Company's Condensed Consolidated Financial Statements, beginning
on page 3, which present the results of operations for the quarters
and the nine month periods ended September 30, 1998 and 1997.
Management's Discussion and Analysis analyzes and explains the
differences between periods for specific line items of the Condensed
Consolidated Financial Statements.

OVERVIEW
- --------

     UniSource Energy recorded net income of $33.7 million for the
quarter ended September 30, 1998, and $27.7 million for the first nine
months of 1998.  This compares with net income of $43.4 million in the
third quarter and $84.8 million for the first nine months of 1997.
The decrease in earnings in both the third quarter and nine months of
1998 is primarily attributable to the absence of net operating loss
tax benefits in 1998, which amounted to $13.1 million in the third
quarter of 1997 and $42.4 million in the first nine months of 1997.
We discuss our results in more detail in Investments in Energy-Related
Affiliates, Earnings, and Results of Operations and below.

     The Company's and TEP's financial prospects are subject to
regulatory, economic, and other uncertainties.  Regulatory
uncertainties include the impact of the introduction of retail
competition in Arizona on January 1, 1999, and the resolution of the
Stranded Cost Recovery Plan filed by TEP with the ACC in the third
quarter of 1998.  Other uncertainties include the extent to which TEP
can alter operations and reduce costs in response to industry changes
or unanticipated economic downturns, which may be limited by continued
high financial and operating leverage.  Our future success will
depend, in part, on our ability to contain and/or reduce the costs of
serving retail customers and the level of sales to those customers.
Until the uncertainties surrounding the introduction of retail
competition in Arizona are resolved, predicting the level of TEP's
future energy sales and the composition of its future revenues is
difficult.  See Competition, Retail below.  In a deregulated
environment, revenues from energy sales will be less certain, although
revenues from transmission and distribution services, which we expect
to remain regulated, would likely continue to grow.  Even in a
deregulated environment, TEP expects to continue to benefit from
population and economic growth in the Tucson area through increased
revenues from its regulated distribution services.
     
     The Company's financial prospects are also subject to
uncertainties relating to the start-up and developmental activities of
the unregulated energy-related affiliates.  Although the Company's
investments in unregulated energy-related affiliates comprise
approximately 2% of total assets, start-up costs and other subsidiary
developmental activities have contributed to losses from certain of
these activities in 1998.  These losses have reduced the earnings
reported by the Company on a consolidated basis for the nine-month
period ended September 30, 1998.

     The Company is addressing the uncertainties discussed above and
is positioning itself to benefit from the changing regulatory
environment.  We are aligning our corporate structure to meet the
needs of the emerging energy markets.  Effective November 1, 1998, TEP
organized its regulated business activities into three separate
business units: distribution, generation and transmission.  We are
improving cost measurement and management techniques and are re-
engineering various functions at TEP.  We have also extended
contracts, where appropriate, for large wholesale and retail
customers, and are developing new affiliates to provide energy
services to markets beyond TEP's retail service territory.  See
Competition, Retail; Investments in Energy-Related Affiliates; and
Results of Operations below.

     TEP's and UniSource Energy's consolidated capital structures
remain highly leveraged. Since April 1997, however, we have made
significant progress in our financial strategy to reduce refinancing
risk by extending maturities of long-term debt and letters of credit
and to reduce exposure to variable interest rates by refinancing with
fixed interest rates.  TEP refinanced variable rate debt obligations
at fixed rates and entered into a new bank Credit Agreement to replace
the MRA.  On August 4, 1998, TEP issued bonds to refinance all of the
First Mortgage Bonds that restricted the payment of dividends, and
redeemed those bonds (which would have matured between 1999 and 2003)
on September 3, 1998.  See Financing Developments, TEP First Mortgage
Bonds and Dividends on Common Stock, below.

     During the next twelve months, TEP expects to fund its operating
activities and construction expenditures with internal cash flows,
existing cash balances, and, if necessary, borrowings under the
Revolving Credit Facility.  As of November 6, 1998, cash balances,
including cash equivalents for UniSource Energy, were approximately
$170 million, of which $151 million was held by TEP and its
consolidated subsidiaries.


COMPETITION
- -----------

    RETAIL

     Under current law, TEP does not compete with other companies for
electric service in TEP's retail service territory.   However, TEP
competes against gas service suppliers and others who provide energy
services.  TEP actively markets energy and customized energy-related
services.  We have not lost any customers to self-generation partly
because of these efforts.  For example, in recent years, TEP executed
new contracts with two principal customers that provide approximately
9% of TEP's total annual retail revenues.  Both customers are in the
copper mining business.  The new contracts include price reductions,
term extensions, and a provision for interruptible service.  These
contracts expire in March 2001 and January 2003.  These mining
customers cannot terminate the contracts early without at least one
and up to two years prior notice.  We have not received any such
notices.

     Retail Electric Competition Rules

     In December 1996, the ACC adopted rules that require a phase-in
of retail electric competition in Arizona beginning January 1, 1999.
The rules were adopted as a framework to implement competition.  On
August 5, 1998 the ACC adopted amendments to the rules which, in part,
provide a two-year phase-in schedule in which all retail customers
will have access to competitive generation by January 1, 2001.

     The key provisions of the rules include the following:

- -	 Each Affected Utility shall make available at least 20% of its 1995
	 system retail peak demand for competitive generation supply on a first-
	 come, first-served basis, as follows: (1) All Affected Utility
	 customers with non-coincident peak demand load of 1 MW or greater will
	 be eligible for competitive electric services no later than January 1,
	 1999.  (2) Groups of Affected Utility customers with individual non-
	 coincident peak load demands of 40 kW or greater aggregated into a
	 combined load of 1 MW or greater will also be eligible for competitive
	 service no later than January 1, 1999.  Each Affected Utility shall
	 also offer a residential phase-in program with a minimum of 1/2 of 1%
	 of residential customers having access to competitive electric
	 services on January 1, 1999, with the number of customers eligible in
	 this program to increase by 1/2 of 1% every quarter until January 1,
	 2001.  All retail customers shall be entitled to obtain competitive
	 electric services no later than January 1, 2001.

	 TEP currently serves about 80 customers who qualify under the 1 MW or
	 greater category described above, representing 351 MW of load.  Of
	 this load, 60% is under contract through 2001.

- -	 Each Affected Utility shall file a report detailing possible
	 mechanisms to provide benefits, such as rate reductions of 3% - 5%, to
	 all Standard Offer customers.

- -	 Each Affected Utility shall make available to all customers in its
	 service territory Standard Offer bundled generation, transmission,
	 ancillary, distribution and other necessary services at regulated
	 rates.  After January 1, 2001, Standard Offer service shall be
	 provided by the Affected Utilities, which will become Utility
	 Distribution Companies (UDCs), who shall also act as providers of last
	 resort.

- -	 The Affected Utilities shall provide non-discriminatory open access to
	 transmission and distribution facilities to serve all customers.  The
	 ACC supports the development of an Independent System Operator (ISO)
	 or, absent an ISO, an Independent Scheduling Administrator (ISA).

- -	 All competitive generation assets and services shall be separated from
	 an Affected Utility prior to January 1, 2001.  Such separation shall
	 either be to an unaffiliated party or to a separate corporate
	 affiliate or affiliates.  If an Affected Utility chooses to transfer
	 its competitive generation assets or competitive services to a
	 competitive electric affiliate, such transfer shall be at a value
	 determined by the ACC to be fair and reasonable.

     Appeal of ACC Order
     
     In February 1997, TEP filed in the Arizona Superior Court an
appeal of the ACC order adopting the rules. TEP filed a motion for
summary judgment, claiming, among other things that the Competition
Rules: (a) violated the Regulatory Compact between TEP and the State
of Arizona; (b) confiscated TEP's property; and (c) violated due
process.  The Court did not grant summary judgment but ruled that the
ACC must hold hearings before it can modify TEP's Certificate of
Convenience and Necessity (CC&N).  No trial date has been set in the
case and no final order has been issued.  We are unable to predict the
outcome of the appeal.

     State and Federal Legislative Initiatives on Retail Electric Competition

     A legislative study committee established by the Arizona
Legislature issued a report on retail electric competition in December
1997.  The report identified tax and other issues for the legislature
to address.  In January 1998, Arizona legislators introduced HB 2663
regarding the implementation of retail electric competition in
Arizona.  This bill was passed by the Arizona State Legislature and
signed by the Governor in May 1998.  The legislation requires the
introduction of customer choice to 20% of each public power entity's
retail load by December 31, 1998, with 100% customer choice by
December 31, 2000.  Although this legislation only relates directly to
public power entities such as SRP; the bill encourages broader
application of the legislation's principles by the ACC to the state's
investor-owned utilities, including TEP, and to cooperatives.

     Additionally, federal legislators introduced several retail
competition initiatives in Congress which, if passed, could modify or
override the actions taken by the ACC or the Arizona Legislature.
Congress is not expected to act on the legislation in 1998.  We are
unable to predict the ultimate impact of such federal legislative
initiatives.

     ACC Order on Stranded Cost Recovery

     On June 22, 1998, the ACC adopted an order which outlines its
policy for stranded cost recovery by Arizona utilities in a
competitive energy market.    The order provides two methods for
stranded cost recovery for the Affected Utilities: (1)
Divestiture/Auction Methodology and (2) Transition Revenues
Methodology.  The order encourages, but does not require, full
divestiture of generating assets through an auction to unaffiliated
third parties.  The order states that only those Affected Utilities
choosing divestiture through the Auction/Divestiture Methodology shall
have the opportunity to recover 100% of unmitigated stranded costs.
The key components of the order are summarized below:

     Divestiture/Auction Methodology
     -------------------------------

	-	Affected Utilities choosing divestiture through the auction method
		must file a divestiture plan for ACC approval no later than October 1,
		1998.  Divestiture must be completed by January 1, 2001.

	-	The amount of stranded costs shall be the difference between the value
		of generation assets (generating plants, purchased power contracts,
		fuel contracts, and related regulatory assets) under traditional
		regulation and the market value of the assets after divestiture.  The
		definition of stranded costs shall include reasonable costs incurred
		for premiums, penalties or other payments necessary to effect
		divestiture, income tax ramifications of divestiture, redemption costs
		associated with tax-exempt two-county debt which may have to be
		redeemed upon transfer of the assets, and other reasonable costs
		necessarily incurred to accomplish divestiture.  Unmitigated stranded
		costs shall also include reasonable employee severance and retraining
		costs necessitated by electric competition.

	-	An Affected Utility shall be permitted to collect 100% of its stranded
		costs, including a return on its unamortized balance over a ten-year
		period, with a true-up mechanism.

	-	The ACC will work with the Affected Utility to provide sufficient
		assurances in order to avoid triggering write-offs related to the
		application of FAS 71.
	
	-	An Affected Utility's generation affiliate may acquire the generation
		assets of its parent or sister company, or the generation assets of
		another Affected Utility in the auction if it establishes that it is
		the highest bidder and that the acquisition will not result in the
		entity having more than 40% of the state's total generation megawatts
		of capacity.

	-	An Affected Utility that divests all its generation costs to non-
		affiliated entities, that results in negative stranded costs (not
		including regulatory assets), shall be entitled to keep 50% of the
		negative stranded costs.

	-	All Affected Utilities' customers shall pay their appropriate share of
		stranded costs either through a Competitive Transition Charge (CTC) or
		a standard offer rate, collected over a maximum of ten years.

	 Transition Revenues Methodology
	 -------------------------------

	-	The order states that "this option would be to provide sufficient
		revenues necessary to maintain financial integrity, such as avoiding
		default under currently existing financial instruments for a period of
		ten years, at the end of which time there would be no remaining
		stranded costs, or for the Commission to otherwise provide an
		allocation of stranded cost responsibilities and risks between
		ratepayers and shareholders as is determined to be in the public
		interest for a given Affected Utility."
     
	 The order required that each Affected Utility file its choice of
options for stranded cost recovery by August 21, 1998.  The order also
required that each Affected Utility file an implementation plan that
would include the following items, if appropriate, for its option
choice: the estimation of stranded costs separated out into regulatory
assets and other generation related assets; a preliminary plan for
auction/divestiture; the minimum financial ratios to maintain
financial viability for ten years; the amount of regulatory assets
requested, how much of those assets are generation related, and the
Commission Decision Number that approved such assets; and other
information as necessary.

	 TEP's Stranded Cost Recovery Plan

     On August 21, 1998, TEP filed a proposed plan for divestiture of
generating assets and stranded cost recovery with the ACC.  Under the
plan, TEP proposed to divest all of its generating assets and
associated property as a method of recovering stranded costs.  In its
filing with the ACC, TEP estimated its stranded costs may range from
$600 million to $1.1 billion.

     TEP owns, leases or co-owns 1,895 MW of generating capacity at
five fossil-fueled power plants in Arizona and New Mexico.  Of that
total, 1,182 MW are TEP-operated facilities, including the
Springerville Generating Station and the Irvington Generating Station.
The net book value of TEP's generating plant assets (including assets
held under capitalized leases) was approximately $1.3 billion at
December 31, 1997.

     ACC Staff Stranded Cost Recovery Agreement (SCR Agreement)

     On November 4, 1998, TEP reached a settlement agreement, the SCR
Agreement, with the ACC Staff for approval of its plan to divest
generation assets and for 100% recovery of stranded costs.  The SCR
Agreement also supports a Memorandum of Understanding (MOU) between
TEP and Arizona Public Service Company (APS) to exchange TEP's
interests in the Navajo and Four Corners Generating Stations for
certain high voltage transmission assets currently owned by APS.  The
SCR Agreement is subject to ACC approval.  The ACC Staff has requested
that the ACC consider the SCR Agreement beginning on November 20,
1998.  However, no specific date has been set.  If the ACC does not
approve the SCR Agreement, without changes, by November 25, 1998, the
SCR Agreement would be considered withdrawn by both TEP and the ACC
Staff.  The SCR Agreement includes the following:

- -	 Stranded costs will include:
	 -	the difference between the book value of generation assets under
		traditional regulation and their market value determined through an
		auction process;
	 -	reasonable costs incurred for premiums, penalties, and/or other
		payments necessary to implement divestiture; and
	 -	reasonable employee severance and retraining costs necessitated by
		competition.

- -	 TEP will divest its generation assets, pursuant to specified auction
	 protocols, by December 31, 2000.  TEP would also seek to terminate
	 its obligations under its leases relating to generating assets.  TEP
	 expects cash payments to lease participants would be required in
	 connection with any such terminations.  In order to complete
	 divestiture of both owned and leased assets, TEP also expects to be
	 required to make cash payments to various creditors and other parties.
	 In addition, a substantial portion of the generating assets have been
	 financed through tax-exempt bonds.  TEP expects that such bonds would
	 need to be redeemed or defeased as a result of the divestiture.

- -	 If the auction of one or more generating units is unsuccessful, TEP
	 would seek to recover stranded costs relating to such unit(s) based on
	 the "Net Revenues Lost" approach.  Under that approach, stranded cost
	 is determined as the net present value of the annual differences
	 between the expected revenues under traditional regulation and
	 revenues likely to be received after the introduction of retail
	 competition.

- -	 TEP would recover 100% of its stranded costs and a return on any
	 unamortized balance over an eight to  ten-year period ending December
	 31, 2008 as follows:

	 -	Interim Transition Charge (ITC)
		Beginning January 1, 1999 through the date of divestiture (no later
		than December 31, 2000), an ITC would be recovered from customers
		under the Standard Offer and from those customers purchasing energy
		from competitive suppliers.  The ITC will be calculated as the
		difference between the embedded cost of generation included in current
		rates and a market price for electric power.

	 -	Competition Transition Charge (CTC)
	    Following divestiture, a CTC will be collected from all distribution
	    customers for a period of six to eight years.  The CTC will include
	    recovery of a carrying cost equal to TEP's cost of capital based on a
	    capital structure consisting of 35 percent equity and 65 percent debt.

- -	 TEP expects that the cash TEP will pay to divest will exceed the
	 proceeds from the sale of owned assets.  To finance the cash
	 requirements of divestiture, TEP would be permitted to "securitize"
	 the CTC by issuing bonds through a special purpose entity. If the SCR
	 Agreement is approved by the ACC, which is a separate branch of
	 government in Arizona, it would represent an administrative (not
	 legislated) authority to securitize stranded costs.  To date, similar
	 securitizations have been issued under legislative rather than
	 administrative authority.

- -	 Open access will begin in TEP's retail market on January 1, 1999,
	 consistent with the Retail Electric Competition Rules.

- -	 TEP's retail customers who remain on the Standard Offer will not
	 experience any increases in their current electricity pricing during
	 the transition period (prior to January 1, 2001). Rather, retail
	 customers who continue to purchase their energy requirements from TEP
	 will benefit from the base price decreases described in TEP Rate
	 Settlement Agreement, below.  After December 31, 2000, retail prices
	 will include the price TEP has to pay to acquire power in the
	 competitive generation market.

- -	 The SCR Agreement will resolve all pending litigation between TEP and
	 the ACC involving the Retail Electric Competition Rules.  See Appeal
	 of ACC Order, above.

- -	 Transmission Assets

	-	TEP will establish a new subsidiary (Transmission Subsidiary) by
		December 31, 2000, to hold all of its transmission assets.  TEP will
		acquire transmission assets and then contribute these assets to the
		Transmission Subsidiary.  The SCR Agreement allows TEP to acquire all
		345 kV and 500 kV transmission facilities owned by APS.

	-	The SCR Agreement supports an exchange of TEP's ownership interests in
		the Navajo Generating Station and Four Corners Generating Station for
		these transmission assets of APS.  TEP currently owns 7.5 percent of
		Units 1, 2 and 3 at Navajo, a total of 168 MW, and 7 percent of Units
		4 and 5 at Four Corners, a total of 110 MW.  Under the MOU, the
		closing of this transaction is to be on or before January 2, 2001.
		Upon completion of the asset exchange, TEP would enter into a four-
		year power sales contract with APS to purchase 200 MWs from these
		units.

	-	TEP expects to have a pre-tax gain from the exchange.  This assumes
		the market value for APS' transmission assets less is greater than the
		net book value of TEP's generation assets at closing.  The SCR
		Agreement allows for 35% of the net book value of transmission assets
		to be used to capitalize the Transmission Subsidiary.  TEP would also
		establish a regulatory liability in an equal amount.  Interest earned
		on the regulatory liability, based on the after-tax cost of capital of
		the stranded cost securitized balance, will be credited to retail
		customers during the CTC collection period.  Additionally, the
		regulatory liability will be amortized to retail customers over 10
		years on a straight-line basis beginning after the conclusion of the
		CTC.

   WHOLESALE

     TEP competes with other utilities, marketers and independent power
producers in the sale of electric capacity and energy in the wholesale
market.  FERC generally does not permit TEP's prices for wholesale
sales of capacity and energy to exceed rates determined on a cost of
service basis.  However, in the fall of 1997, FERC granted TEP a
tariff to sell at market-based rates.  In the current market,
wholesale prices are substantially below total cost of service, but in
all instances, we make wholesale sales at prices which exceed fuel and
other variable costs.  In addition, we expect competition to sell
capacity to remain vigorous.  Prices may remain depressed for at least
the next several years due to increased competition and surplus
capacity in the southwestern United States.  Competition for the sale
of capacity and energy is influenced by the following factors:

	 -	availability of capacity in the southwestern United States,
	 -	the availability and prices of natural gas, oil and coal,
	 -	spot energy prices, and
	 -	transmission access.

     The FERC issued two orders pertaining to transmission access in
April 1996.  FERC Order No. 888 requires all public utilities that
own, control, or operate interstate transmission facilities to offer
transmission service to others under a single tariff.  This tariff
must incorporate certain minimum terms and conditions of transmission
service established by the FERC and must also be used by public
utilities for their own wholesale market transactions.  Transmission
and generation services for new wholesale service are to be unbundled
and priced separately.  FERC Order No. 889 requires transmission
service providers to establish or participate in an open access same-
time information system (OASIS) that provides information on the
availability of transmission capacity to wholesale market
participants.  The order also establishes standards of conduct to
prevent employees of a public utility engaged in marketing functions
from obtaining preferential access to OASIS-related information or
from engaging in discriminatory business practices.  TEP is in
compliance with the requirements of FERC Orders 888 and 889.

     TEP, along with other transmission owners and users located in
the southwestern United States, is investigating the feasibility of
forming an ISO for the region.  An ISO would be responsible for
ensuring transmission reliability and nondiscriminatory access to the
regional transmission grid.  Over 50 participants have signed a
Development Agreement.  The formation of an ISO would be subject to
approval by the FERC and state regulatory authorities in the region.
The financial aspects of forming an ISO, including the potential
effects on TEP's future results of operations, will be examined as
part of the developmental work.

TEP RATE SETTLEMENT AGREEMENT
- ------------------------------

     On August 25, 1998, the ACC approved a rate settlement agreement
(Rate Settlement) which provides TEP's retail customers with base
price decreases over the next two years.  TEP's base price will
decrease by the following percentages:

- -	an initial 1.1% (about $7.0 million) decrease effective July 1, 1998;
- -	a second decrease of 1.0% (about $5.5 million) on July 1, 1999; and
- -	an additional 1.0% (about $5.5 million) decrease on July 1, 2000.

The latter two decreases will apply to all Standard Offer customers
who do not have or do not choose access to retail competition during
the two-year phase-in of the ACC's Electric Competition Rules
beginning January 1, 1999.  The Rate Settlement meets the requirement
in the ACC's Electric Competition Rules for a 3-5% rate reduction.
See Competition, Retail.

     The Rate Settlement resolves TEP's application for a price
decrease in its Shared Savings Proposal filed with the ACC on July 9,
1997.  The settlement also provides for TEP to mitigate potentially
stranded costs through the accelerated recovery of an additional $4.3
million (after-tax) of deferred regulatory assets.  This increase in
amortization expense will be reflected in TEP's regulatory accounting
records but will have no impact on the expenses included in its
financial statements.  See Note 6 of Notes to the Condensed
Consolidated Financial Statements, Rate Matters.

     The Rate Settlement further affirms an interim accounting order
issued by the ACC in July 1997.  That order authorizes TEP to record a
$50 million coal contract termination fee as a deferred regulatory
asset and amortize that asset over approximately 13 years, or $3.8
million per year.  At September 30, 1998, $45.2 million of this
regulatory asset remained unamortized.  This fee was incurred when TEP
negotiated a new coal contract with the coal supplier to the
Springerville Generating Station which reduced its annual fuel bill
initially by approximately $10 million.


ACCOUNTING FOR THE EFFECTS OF REGULATION
- ----------------------------------------

     The ACC regulates TEP's utility business.  TEP generally uses the
same accounting policies and practices used by nonregulated companies
for financial reporting under generally accepted accounting
principles.  However, sometimes these principles, such as FAS 71,
require special accounting treatment for regulated companies to show
the effect of regulation.  For example, in setting TEP's retail rates,
the ACC may not currently allow TEP to charge its customers to recover
certain expenses but, instead, require that these expenses be charged
to customers in the future.  In this situation, FAS 71 requires that
TEP not show these expenses on its current income statements but
"defer" these items and show them as "regulatory assets" on the
balance sheet until TEP is allowed to charge its customers.  TEP then
amortizes these items to the income statement as charges are billed to
customers.  Similarly, certain items of revenue may be deferred as
regulatory liabilities, which are also eventually amortized to the
income statement.

     We have recorded regulatory assets and liabilities in our balance
sheets in accordance with FAS 71.  A regulated company must satisfy
certain conditions to apply the accounting policies and practices of
FAS 71. These conditions include:

	-	an independent regulator sets rates;
	-	the regulator sets the rates to cover specific costs of
		delivering service; and
	-   the service territory lacks competitive pressures to reduce
		rates below the rates set by the regulator.

We periodically assess whether we continue to meet these conditions.
If we were required to stop applying FAS 71 to all or a portion of
TEP's regulated utility operations, we would write off the related
balances of TEP's regulatory assets and liabilities as a charge in our
income statement.  In that event, our earnings would be reduced by the
net amount of regulatory assets and liabilities, after applicable
deferred income taxes.  Based on the balances of TEP's regulatory
assets and liabilities at September 30, 1998, if we stopped applying
FAS 71 to all of TEP's regulated operations, we would record an
extraordinary loss of approximately $150 million, net of the related
deferred income tax benefit of $101 million.  Approximately 62% of
TEP's net regulatory assets on the balance sheet relate to electric
generation.  While our cash flows may be affected by regulatory orders
and market conditions, our cash flows would not be affected if we
ceased to apply FAS 71.

     If we stop applying FAS 71, we would need to evaluate the
likelihood that we could recover the cost of TEP's electric plant in
the marketplace.  If undiscounted cash flows are less than the
carrying value of those plant assets that we continue to own, then we
would need to write off as an expense a portion of those plant assets
to reflect their current market value.  Plant assets to be disposed of
would be written down to fair value if it is less than carrying value.
We cannot predict if we would write off any plant assets as a result
of these evaluations.

     On June 22, 1998, the ACC adopted an order which outlines its
policy for stranded cost recovery by Arizona utilities in a
competitive energy market.  On August 5, 1998, the ACC adopted
amendments to the Retail Electric Competition Rules which, in part,
provide a two-year phase-in schedule in which all retail customers
will have access to competitive generation by January 1, 2001.  See
Competition, Retail for a discussion of the ACC order regarding
stranded cost recovery and the ACC competition rules.

     We expect that TEP will cease to account for its generation
operations using FAS 71 at the time the ACC approves the SCR Agreement
or another cost recovery plan specific to TEP, which includes the
specific percentage of stranded costs that TEP can recover and a cost
recovery method.  The amount and method of recovery that the ACC
approves for TEP will determine whether write-offs will be incurred at
that time.  TEP expects the ACC to make a decision and issue a final
order regarding its stranded cost recovery plan by year-end 1998.
However, the specific amount of stranded costs won't be determined
until the divestiture plan is implemented.  We are unable to predict
the amount of write-offs, if any, that may be incurred at that time.


INVESTMENTS IN ENERGY-RELATED AFFILIATES
- ----------------------------------------

      Our investments in the energy-related affiliates owned by MEH
comprise approximately 2% of the consolidated total assets of the
Company.  These investments contributed net income of $5.7 million for
the third quarter, but contributed a net loss of $4.0 million for the
first nine months of 1998.  These results are included in the Other
Income (Deductions) section on UniSource Energy's income statement.
The sale of Nations Energy's interest in Trigen-Nations Energy was the
primary contributor to the net income reported in the third quarter of
1998.  The Company's equity in the losses at NEV caused the overall
loss at MEH for the first nine months of 1998.

      The California electricity market was originally scheduled to
open to competitors such as NEV on January 1, 1998.  However,
technical matters related to the California Independent System
Operator and the California Power Exchange delayed the opening of the
electricity market until March 31, 1998.  Therefore, NEV could not
make retail power sales in California in the first quarter.  Start-up
costs associated with expansion into additional regions of the country
also contributed to the losses in the first nine months of 1998.
Although the delays in establishment of the competitive market caused
losses at NEV in the first nine months, NEV expects losses to decline
as more customers are added throughout the year.

      NEV has incurred a total loss in excess of $40 million for the
period September 1997 through September 1998. From September 1997, the
inception of Millennium's ownership in NEV, through September 30,
1998, Millennium recorded approximately $23.8 million of NEV losses.
The amount equals the total funds and unsecured commitments provided
by Millennium and UniSource Energy to NEV.  Accounting principles
limit the amount of NEV's loss to be recorded by Millennium to the
total amount invested and committed by Millennium and UniSource Energy
on an unsecured basis.  Should Millennium or UniSource Energy provide
additional unsecured funding to NEV, the amounts provided would be
immediately expensed up to the lesser of the amount of funding
provided or the amount of NEV cumulative incurred losses in excess of
the $23.8 million already recorded by Millennium and UniSource Energy.
NEV is seeking sources other than Millennium and UniSource Energy to
provide funding.  There can be no assurance that any such financing
will be obtained.

      Depending on the nature of future investment opportunities, we
expect to make additional investments in energy-related ventures. The
ACC Holding Company Order requires that the capitalization (debt and
equity) of the Company's affiliates other than TEP not exceed 30% of
TEP's capitalization unless otherwise approved by the ACC.


DIVIDENDS ON COMMON STOCK
- -------------------------

    UniSource Energy

     UniSource Energy's ability to pay dividends depends upon cash
flow from TEP and MEH.  As described below, in the third quarter of
1998 TEP redeemed those First Mortgage Bonds which had covenants
restricting the payment of dividends.  TEP has not declared or paid a
dividend on common stock since 1989.

    TEP

     On September 3, 1998, TEP redeemed the five outstanding issues
of First Mortgage Bonds (aggregating $137 million in principal amount)
which contained covenants which prevented TEP from paying dividends
unless specific cash flow coverage and retained earnings tests were
met.  See Financing Developments, TEP First Mortgage Bonds, below.

     TEP's Credit Agreement allows TEP to pay dividends if it
maintains compliance with the agreement and meets certain financial
covenants, including a covenant that requires TEP to maintain a
minimum level of net worth.  As of September 30, 1998, the required
minimum net worth was $180.8 million.  TEP's actual net worth at
September 30, 1998 was $253.4 million.  See Financing Developments,
TEP Credit Agreement, below.  As of September 30, 1998, TEP is in
compliance with the terms of the Credit Agreement.

     The ACC Holding Company Order states that TEP may not pay
dividends to UniSource Energy in excess of 75% of its earnings until
TEP's equity ratio equals 37.5% of total capital (excluding capital
lease obligations).  As of September 30, 1998, TEP's equity ratio on
that basis was 17.3%.

     In addition to these restrictive covenants, the Federal Power
Act states that dividends shall not be paid out of funds properly
included in the capital account.  Although the terms of the Federal
Power Act provisions are unclear, we believe that there is a
reasonable basis to pay dividends from current year earnings.

EARNINGS
- --------

     UniSource Energy recorded net income of $33.7 million in the
third quarter of 1998 compared with net income of $43.4 million in the
third quarter of 1997.  Net income per average share of Common Stock
was $1.05 for the third quarter of 1998 compared with net income per
average share of Common Stock of $1.35 for the third quarter of 1997.
The major reasons for the variance between the results for the third
quarter of 1998 and the results for the third quarter of 1997 were:

	 -	$13.1 million in net operating loss carryforward tax benefits
        recorded in 1997,
	 -	a $5.8 million after-tax gain from the sale of a partnership
		interest by an unregulated energy-related affiliate in 1998,
	 -	retail sales were lower due to milder weather conditions in 1998,
	 -	retail revenues were lower due to a 1.1% rate decrease effective
		July 1, 1998,
	 -	a $7.1 million reduction in retail revenues in 1998 related to a
		change in the method of estimating unbilled revenues, and
	 -	interest expense was $2.5 million higher in 1998 due to
		refinancings.
  
     For the first nine months of 1998, the Company recorded net
income of $27.7 million, compared with net income of $84.8 million for
the first nine months of 1997.  Net income per average share of Common
Stock was $0.86 for the first nine months of 1998 compared with net
income per average share of Common Stock of $2.64 for the first nine
months of 1997.  The major reasons for the variance between the
results for the first nine months of 1998 and the results for the
first nine months of 1997 were:
     
	 -	$42.4 million in net operating loss carryforward tax benefits
		recorded in 1997,
	 -  $10.2 million in pre-tax other income from a reversal of loss
		provision in 1997,
	 -	$8.1 million of non-cash regulatory revenues recorded in 1997,
	 -	$4.0 million in net losses from investments in unregulated energy-
		related businesses in 1998,
	 -	retail sales were lower due to mild weather conditions in 1998,
	 -	retail revenues were lower due to a 1.1% rate decrease effective
		July 1, 1998,
	 -	a $7.1 million reduction in retail revenues in 1998 related to a
		change in the method of estimating unbilled revenues, and
	 -	interest expense was $10.0 million higher in 1998 due to
		refinancings.
     
     TEP recorded net income of $29.4 million for the third quarter of
1998, compared with net income of $43.4 million in the third quarter
of 1997.  The third quarter earnings decrease was primarily
attributable to the absence of tax benefit recognition in 1998, lower
retail sales due to mild weather conditions, a 1.1% rate decrease
effective July 1, 1998, an adjustment to retail revenues for a change
in the method of estimating unbilled revenues, and higher interest
expense from refinancings.  Earnings for the nine-months ended
September 30, 1998 were $35.8 million, compared with net income of
$84.8 million for the same period in 1997.  The same factors which
contributed to the variance for the third quarter also explain the
nine-month results.  In addition, income from a reversal of loss
provision and non-cash regulatory revenues, both recorded in the nine
months ended September 30, 1997, contributed to the earnings variance.
     
RESULTS OF OPERATIONS
- ---------------------

     Currently, TEP's financial condition and results of operations
are the primary factors affecting the financial condition and results
of operations of UniSource Energy on an annual basis.  We note any
fluctuations that are not primarily due to TEP activities.  All
nonutility operating transactions are reflected in Other Income
(Deductions) on the UniSource Energy Consolidated Statement of Income.

  Utility Sales and Revenues

     Comparisons of TEP's kilowatt-hour sales and electric revenues
are shown below:

<TABLE>
<CAPTION>

                                               Increase/(Decrease)
                                               -------------------
Three Months Ended September 30       1998       1997     Amount      Percent
- -------------------------------       ----       ----     ------      -------
<S>                               <C>           <C>      <C>         <C>
Electric kWh Sales (000):               
      Retail Customers              2,280,253  2,321,385   (41,132)    (1.8)%
      Sales for Resale              1,417,787    921,220   496,567     53.9
                                    ---------  ---------   --------      
             Total                  3,698,040  3,242,605   455,435     14.0
                                                                               
Electric Revenues (000):                                                       
      Retail Customers               $196,449   $201,566   $(5,117)    (2.5)%
      Sales for Resale                 56,831     29,523    27,308     92.5
                                     --------   --------   --------     
             Total                   $253,280   $231,089   $22,191      9.6
</TABLE>



<TABLE>
                                                Increase/(Decrease)
                                                -------------------
Nine Months Ended September 30           1998       1997     Amount    Percent
- ------------------------------           ----       ----     ------    -------
<S>                                  <C>        <C>        <C>        <C>
Electric kWh Sales (000):                                                      
      Retail Customers                 5,889,674  5,830,042    59,632     1.0%
      Sales for Resale                 3,304,675  2,385,481   919,194    38.5
                                       ---------  ---------   -------
             Total                     9,194,349  8,215,523   978,826    11.9  
                                       
Electric Revenues (000):                                                       
      Retail Customers                  $485,333   $490,752   $(5,419)   (0.1)%
      Amortization of MSR Option                                              
            Gain Regulatory Liability          0      8,105    (8,105) (100.0)
      Sales for Resale                   108,636     69,483    39,153    56.3
                                       ---------  ---------   -------   
            Total                       $593,969   $568,340   $25,629     4.5
</TABLE>


     TEP's kWh sales to retail customers decreased by 1.8% during the
third quarter of 1998 compared with the third quarter of 1997.
Although TEP experienced retail customer growth of 2.7%, moderate
weather conditions in the quarter contributed to the decline in retail
kWh sales.  Based on cooling degree days, a commonly used measure in
the electric industry that is calculated by subtracting 75 from the
average of the high and low daily temperatures, the Tucson area
registered a decrease of approximately 7% in cooling degree days for
the third quarter of 1998 compared with the same period in 1997, and a
decrease of approximately 3% in cooling degree days compared with the
ten year average for the same period from 1988 to 1997.  Cooling
degree days for the third quarter of 1998 were 944, compared with 1015
for the third quarter of 1997 and 970 for the ten-year average.

     For the first nine months of 1998, kWh sales to retail customers
were 1.0% higher than the same period in 1997.  Retail customer growth
for the nine months ended September 30, 1998 averaged 2.1%.  Milder
weather conditions in both the second and third quarters of 1998
contributed to the moderate growth in retail kWh sales for the nine-
month period.

     Revenues from sales to retail customers decreased by 2.5% in the
third quarter of 1998 compared with the same period in 1997 because of
the lower kWh sales and a 1.1% across the board rate reduction
retroactive to July 1, 1998.  Also, in the third quarter of 1998, TEP
changed its method of estimating unbilled revenues, which resulted in
a $7.1 million adjustment to retail revenues.  Renegotiated pricing of
contracts with large commercial, industrial and mining customers also
resulted in reduced revenues.  Retail revenues for the nine-month
period of 1998 were relatively flat, with the increase in kWh sales
noted above offset by the impacts of lower rates under long-term
contracts to large customers, the retail rate reduction implemented in
the third quarter of 1998, and the adjustment for the change in the
method of estimating unbilled revenues.  See Note 9. of Notes to
Condensed Consolidated Financial Statements, Change in Method of
Estimating Unbilled Revenues.

     The lower retail demand in the third quarter allowed TEP to
increase its wholesale sales activity.  Our kWh sales for resale
increased by 54% and the related revenues nearly doubled in the third
quarter of 1998 relative to the same period in 1997.  For the nine
months ended September 30, 1998, sales for resale were up 39% and
wholesale revenues increased 56% compared to the same period in 1997.
     
     Although average temperatures were milder overall in the second
and third quarters of 1998, TEP set a record for retail electricity
sold in a 24-hour period on July 16, 1998, distributing 33,959
megawatt-hours to its retail customers, a 7.0% increase over the
previous record set in 1997.  On the same date, TEP experienced a new
record peak demand of 1,786 MW, an increase of 7.7% over the previous
record of 1,659 MW set on August 10, 1997.

     TEP's non-cash revenue from the Amortization of the MSR Option
Gain Regulatory Liability was $8.1 million in the first nine months of
1997.  This regulatory liability was fully amortized in May 1997.
Therefore, no amortization was recognized in 1998.  If we exclude the
revenue from the MSR Option Gain amortization from 1997 revenues,
total operating revenues would have been 6.0% higher in the first nine
months of 1998 than the same period in 1997.

  Operating Expenses

     Fuel and Purchased Power expense increased by 43% in the third
quarter and 22% in the first nine months of 1998 compared with the
same period in 1997 because of the increased purchased power to
support the higher wholesale sales we discussed above, as well as to
provide energy during several brief, but unscheduled, power plant
outages during the third quarter of 1998.  If we exclude the growth in
Fuel and Purchased Power expense, other operating expenses decreased
in total by 4% in the third quarter and by 3% in the first nine months
of 1998 over the same periods in 1997.

     Other Operations expense was $3.4 million lower in the third
quarter and $4.4 million lower in the first nine months of 1998 than
in the same periods of 1997.  Results for 1997 included consulting
fees paid to NEV of $2.6 million in the third quarter and $6.3 million
for the nine-month period.

 Other Income (Deductions)
 
     UniSource Energy and TEP recognized $13.1 million of NOL benefit
in the third quarter of 1997 and none in 1998. This lack of benefit
recognition and higher tax expense resulting from increased income,
caused the third quarter 1998 income tax benefits included in Other
Income (Deductions) to decrease by $14.3 million and $15.3 million for
UniSource Energy and TEP, respectively, from the third quarter of
1997.

     Compared with the first nine months of 1997, 1998 income tax
benefits included in Other Income (Deductions) decreased by $37.9
million and $40.7 million for UniSource Energy and TEP, respectively.
These changes are mainly due to the lack of recognition of Net
Operating Loss (NOL) benefits offset by greater tax benefits as a
result of lower income.  UniSource Energy and TEP recognized $42.4
million of NOL benefit in the first nine months of 1997 and none in
1998.

     As of December 31, 1997, both UniSource Energy and TEP had
recorded the amount of prior period NOL benefit that we expect to use
on future income tax returns.  At the present time, we are not able to
estimate future additional amounts of NOL benefit that we may
recognize in the income statements of either UniSource Energy or TEP.
This is because there are still open tax years for which there may be
additional assessments and because federal and state NOL carryforwards
have varying expiration dates.  We do not expect to recognize
additional amounts of NOL benefit until such items are resolved.

     A Reversal of Loss Provision of $10.2 million was recorded in the
second quarter of 1997.  The Reversal of Loss Provision relates to the
dissolution of a subsidiary which formed part of TEP's former
investment operations.

     Other Income for TEP includes interest income on the promissory
note it received from the Company in exchange for the transfer of its
stock in MEH.  See Note 3 of Notes to the Condensed Consolidated
Financial Statements, Transfer of MEH from TEP to UniSource Energy.
TEP recorded interest income of $2.4 million in the third quarter and
$7.0 million in the first nine months of 1998 from this note.  On the
Consolidated Statement of Income for UniSource Energy, this income is
eliminated as an inter-company transaction.

     The unregulated energy subsidiaries owned by MEH reported net
income of $5.7 million for the third quarter and a net loss of $4.0
million for the first nine months of 1998, compared with net losses of
$1.6 million in the third quarter and $2.1 million for the first nine
months of 1997.  Net income for the third quarter of 1998 resulted
from a $5.8 million after-tax gain on the sale of Nations Energy's
interest in Trigen-Nations Energy, which owns and operates the Coors
Brewing Company power plant in Golden, CO.  The delayed implementation
of California's competitive electricity market until March 31, 1998,
expansion into additional regions of the country, and other subsidiary
development activities affected the financial results for these
businesses for the nine month period.  See Investments in Energy-
Related Affiliates.

  Interest Expense

     Interest expense increased by $2.5 million in the third quarter
and by $10.0 million of the first nine months of 1998 relative to the
same periods in 1997.  Higher letter of credit fees for TEP's new
Credit Agreement, as well as higher interest rates from the
refinancing of certain variable rate debt obligations with fixed rate
debt obligations accounted for a substantial part of the increase.
TEP also incurred higher interest expense in 1998 when new bonds were
issued and began accruing interest for periods up to 45 days before
the redemption of old bonds.  (See Financing Developments, TEP Sale of
Pollution Control Bonds and TEP First Mortgage Bonds, below).  These
refinancings benefit TEP by extending debt maturities and reducing the
risk from changes in variable interest rates.

 EVENTS AFFECTING FUTURE RESULTS OF UTILITY OPERATIONS

  TEP Generating Resources

     On May 1, 1998, the lease on three internal combustion turbine
generating units having a combined generating capacity of 96 MW ended.
TEP is in the process of evaluating the need for this type of peaking
generation resource in the near term.  Firm capacity purchases needed
to replace the expired leased capacity are not expected to have a
material negative impact on UniSource Energy or TEP financial results.


LIQUIDITY AND CAPITAL RESOURCES
- -------------------------------

  CASH FLOWS

     UniSource Energy

     Cash and cash equivalents increased by $44.7 million or 37%
during the twelve months ended September 30, 1998.  The September 30,
1998 ending balance was $164.5 million compared with the September 30,
1997 ending balance of $119.8 million.  For the twelve-month period
ended September 30, 1998, net cash flows from operating activities
exceeded the cash needed for investing and financing activities.

     Net cash flows from operating activities increased in aggregate
by $30.8 million in the first nine months of 1998 compared with the
same period in 1997.  This increase was mainly due to the payment of
$40.0 million in contract termination fees to the Springerville coal
supplier in the first nine months of 1997 compared to $10.0 million
paid to the coal supplier in the first nine months of 1998 (see Note 6
of Notes to Condensed Consolidated Financial Statements, Rate
Matters).  Significant increases in cash receipts for the nine-month
period included cash receipts from sales for resale and proceeds from
the sale of emission allowances.  These were offset by increased
payments for higher fuel and purchased power costs supporting the
higher wholesale sales, and higher cash interest payments due to debt
redemptions and higher interest rates on refinanced debt for 1998.

     Total net cash outflows from investing activities increased by
$10.9 million during the first nine months of 1998 compared with the
same period in 1997.  Construction Expenditures increased by $6.8
million in the 1998 period, while net Investments in Joint Ventures
were $3.1 million higher.

     Total net cash outflows from financing activities decreased by
$8.8 million in the first nine months of 1998 compared with the same
period in 1997.  Net retirements of long-term debt and capital lease
obligations were greater in the first nine months of 1997, primarily
due to the repayment of the $31 million balance outstanding on TEP's
Renewable Term Loan.

     Our consolidated cash balance, including cash equivalents, at
November 6, 1998 was approximately $170 million.  Of this amount, $151
million was held by TEP and its wholly-owned subsidiaries.  We invest
cash balances in high-grade money market securities with an emphasis
on preserving the principal amounts invested.

     TEP

     Cash and cash equivalents increased by $12.6 million, or 11%,
from the September 30, 1997 ending balance of $119.8 million to the
September 30, 1998 ending balance of $132.4 million.  TEP expects to
generate enough cash flow during the next twelve months to fund
continuing operating activities and construction expenditures.  Actual
cash flows may vary from projections if there are changes in wholesale
revenues, changes in short-term interest rates or other factors.  If
cash flows were to fall short of expectations, TEP would use existing
cash balances and, if necessary, borrow from the Revolving Credit
Facility.  At November 6, 1998, there was no outstanding balance due
under the Revolving Credit Facility.

  FINANCING DEVELOPMENTS

    Warrant Exchange Offer

     From August 18, 1998 through October 23, 1998, the Company
offered to exchange outstanding warrants previously issued by TEP.  At
the time of the exchange offer, there were approximately 12.1 million
aggregate number of TEP Warrants outstanding.  TEP Warrants entitle
the holder of five warrants to purchase one share of TEP common stock
for $16.00.  Currently, UniSource Energy owns 100% of the common stock
of TEP and TEP common stock is not publicly traded.  In order to
provide TEP Warrant holders with the opportunity to obtain warrants
exercisable into UniSource Energy common stock, which is listed and
has an established market, the Company offered to exchange UniSource
Energy Warrants for TEP Warrants.  Each whole new UniSource Energy
Warrant entitles the holder to purchase one share of UniSource Energy
common stock for $16.00.  For each TEP Warrant, the holder received:

- -	0.20 UniSource Energy Warrant, expiring March 15, 1999; and
- -	0.20 UniSource Energy Warrant, expiring December 15, 2000.

      The Exchange Offer expired on October 23, 1998.  Approximately
1.5 million UniSource Energy Warrants of each series were issued in
exchange for approximately 7.5 million tendered TEP Warrants.
Approximately 4.6 million TEP Warrants were not tendered for exchange
and retain the right to purchase, upon payment of the exercise price,
TEP common stock.  The shares of TEP common stock issued as a result
of any exercise of TEP Warrants are not exchangeable for UniSource
Energy common stock.

    Direct Stock Purchase Plan

      The Company established a direct stock purchase plan, called the
Investment Plus Plan, in the third quarter of 1998.  The Investment
Plus Plan provides a method of investing directly in the Company's
common stock without brokerage commissions or service charges.

    TEP First Mortgage Bonds

     In 1997 the ACC granted authority to TEP to refinance up to $184
million of its First Mortgage Bonds scheduled to mature between 1999
and 2003, as well as any redemption premiums, by issuing new debt
and/or equity securities.  TEP completed these transactions in the
third quarter of 1998 and fulfilled its objective to extend maturities
and eliminate certain restrictive covenants contained in the existing
First Mortgage Bonds.

     In May 1998, TEP exchanged $46.9 million of its then existing
12.22% First Mortgage Bonds due 2000 for the same amount of new 12.22%
Exchange Series First Mortgage Bonds due 2000.  With the exception of
the elimination of a covenant restricting the payment of dividends,
the new bonds have substantially the same terms and conditions as the
then existing bonds.

     In August 1998, TEP issued $140 million of First Collateral Trust
Bonds, Series A, and used the net proceeds in September 1998 to redeem
all of its First Mortgage Bonds due in 1999, 2001, 2002, and 2003, as
well as the $31.9 million of 12.22% First Mortgage Bonds due 2000 not
tendered for exchange as described above.  Interest rates on the bonds
that were redeemed ranged from 7.55% to 12.22%.  When TEP redeemed
these bonds, it eliminated covenants that prohibited the payment of
common stock dividends so long as it had an accumulated earnings
deficit (see Dividends on Common Stock).  The First Collateral Trust
Bonds, Series A bear interest at 7.50% and mature in 2008.  The First
Collateral Trust Bonds are not secured by a direct mortgage or other
lien on property of TEP, but instead are collateralized by an equal
aggregate principal amount of bonds issued under TEP's General First
Mortgage and held by the trustee.  If and when the bonds
collateralizing the First Collateral Trust bonds constitute all bonds
outstanding under TEP's General First Mortgage, the bonds issued under
the General First Mortgage may be surrendered and substituted with an
equal amount of bonds issued under the General Second Mortgage.  If
and when the bonds collateralizing the First Collateral Trust bonds
constitute all bonds outstanding under the General Second Mortgage,
the bonds may be surrendered and the First Collateral Trust Bonds,
Series A will become unsecured obligations of TEP.

     In November 1998, TEP called $30 million of its 8.50% First
Mortgage Bonds ($57.9 million aggregate principal amount outstanding)
for redemption on December 7, 1998.  Such bonds are scheduled to
mature in 2009.

    TEP Sale of Pollution Control Bonds

     On March 17, 1998, the Apache County, Arizona Industrial
Development Authority issued $200 million of new bonds for the benefit
of TEP.  The proceeds were used on May 15, 1998 to redeem the 1981
Series A Apache County Pollution Control Revenue Bonds due 2020 ($100
million) and the 1981 Series B Apache County Pollution Control Revenue
Bonds due 2021 ($100 million).  The new bonds, which are unsecured,
were issued in three series: Series A Pollution Control Revenue Bonds
($83.7 million) bears interest at 5.85% and matures in 2028; Series B
Pollution Control Revenue Bonds ($99.8 million) bears interest at
5.875% and matures in 2033; and Series C Industrial Development
Revenue Bonds ($16.5 million) bears interest at 5.85% and matures in
2026.

     The 1981 Series A Apache Bonds were supported by a letter of
credit.  This LOC was collateralized by Second Mortgage Bonds under
the terms of TEP's Credit Agreement.  When TEP redeemed these bonds,
the Letter of Credit Facility decreased from $444 million to $341
million and the Second Mortgage Bonds collateralizing those LOCs
decreased by $103 million.  The 1981 Series B Apache Bonds were
supported by a letter of credit outside of the Credit Agreement.  This
LOC was collateralized by First Mortgage Bonds.  When TEP redeemed
these bonds, it eliminated the supporting LOC and retired $103 million
of First Mortgage Bonds collateralizing the LOC.

    TEP Credit Agreement
     
     As of September 30, 1998 and as of November 6, 1998, TEP had no
borrowings outstanding under its $100 million Revolving Credit
Facility.

     As described above in TEP Sale of Bonds, after TEP redeemed the
1981 Series A Apache County Pollution Control Revenue Bonds on May 15,
1998, the amount of its Letter of Credit Facility decreased to $341
million and the amount of its total facilities under the Credit
Agreement, which includes the Revolving Credit Facility discussed
above, decreased to $441 million.

     TEP is required by its Credit Agreement to maintain certain
financial covenants including (a) a minimum Consolidated Tangible Net
Worth equal to the sum of $133 million plus 40% of cumulative
Consolidated Net Income since January 1, 1997, (b) a minimum Cash
Coverage Ratio ranging from 1.30 in 1998 and gradually increasing to
1.55 in 2002, and (c) a maximum Leverage Ratio ranging from 7.00 in
1998 and gradually decreasing to 6.20 in 2002.  For the quarter ended
September 30, 1998, TEP was in compliance with each of these
covenants.

    UniSource Energy--Loans and Guarantees

     Effective September 1, 1997, Millennium exercised an option to
acquire a 50% ownership in NEV. Concurrent with the exercise of the
option, Millennium made a capital contribution in the amount of $0.8
million.

     In December 1997, Millennium committed to provide NEV with $20
million of funding.  At September 30, 1998, NEV had received $19
million under the commitment.  As a result, the remaining commitment
amount available was $1 million at October 31, 1998.  Additionally, in
October 1998, NEV issued a $4.7 million promissory note to Millennium
for a $3.0 million member loan Millennium extended to NEV in September
1997, and preferred operating return due Millennium under the terms of
NEV's original operating agreement.

     UniSource Energy is the guarantor of $33.6 million of performance
bonds that secure amounts NEV may owe to the utility distribution
companies (UDCs) and energy suppliers in connection with NEV's sales
to retail electric customers.  NEV bills its customers for these
charges.  Additionally, in August 1998, UniSource Energy agreed to
guarantee a $10 million loan that NEV obtained from an unrelated
party.  That loan is due in 1999.


IMPACT OF YEAR 2000 ON COMPUTER SYSTEMS AND APPLICATIONS
- --------------------------------------------------------

      The Company continues to review, test and make modifications to
its computer systems and applications in an effort to ensure that it
will provide uninterrupted service and that year 2000 transactions can
be processed.  The Company's year 2000 program commenced in 1996.  We
believe that all identified systems and applications within our
control will be year 2000 ready by June 30, 1999. "Year 2000 ready"
means the system properly functions for our specific business
requirements now, into, and through the next century.

State of Readiness
- ------------------

      We have completed an inventory and assessment for each of TEP's
critical and non-critical information systems and embedded
technologies.  The following areas are being addressed: enterprise
information systems; control and embedded systems; suppliers; and
subsidiaries.

Enterprise Information Systems--We began the remediation, replacement
or upgrade of these systems in 1996 and we expect to complete this
process by the end of 1998, including testing and implementation.  The
following systems are included:

     Customer Services, Billing, Receivables: Compliant--Customer
	 Information System installed in 1998;
     Human Resources, Payroll: System installed in 1993 and upgraded
	 to full compliance in 1998;
     Work Management: Compliant--System installed in 1997;
     General Ledger, Fixed Assets, Projects: Scheduled for replacement
     in 1999 and current systems now being remediated with completion
     date in fourth quarter 1998;
     Accounts Payable, Purchasing, Inventory: Remediation completed in
	 1998.
     
Upgrades to the operating system software are scheduled through the
first quarter 1999.  An integrated test is then scheduled for the
second quarter 1999 of the enterprise hardware, operating software and
major applications with year 2000 date processing.
     
Control and Embedded Systems--We are reviewing the control and
embedded systems of TEP's utility plant (including the generation
units that TEP owns part of but does not operate).  Many of these
systems are critical to the power generation, transmission and
distribution of electrical service.  The inventory and assessment
stages of the control and embedded systems program are complete as of
the third quarter of 1998.  The testing and remediation efforts are
55% complete and are expected to be substantially completed by the end
of the second quarter of 1999.  Major upgrades are scheduled for the
Energy Management (SCADA) System and for power generation systems.

Suppliers--We have identified the major vendors from whom we purchase
products or services relating to the generation, transmission and
distribution of electrical service.  We are working with those vendors
to determine their plans to correct any problems they may face with
year 2000 compliance and investigate any potential impact on TEP.
Other business areas of the Company are also being reviewed for major
vendors and the identified vendors will be pursued for their
corrective plans and impact on TEP.

Subsidiaries--The Company is contacting NEV, Nations Energy and Global
Solar to determine their state of readiness.  These companies will be
monitored to ensure plans are in place to avoid year 2000 disruptions.

Costs
- -----

      From 1996 through September 30, 1998, specific year 2000 project
costs of approximately $686,000 have been incurred, all of which were
expensed.  Those amounts exclude the costs of major system
replacements which, in addition to other functional changes, served to
remediate year 2000 issues.  A budget of $1.35 million has been
established for year 2000 project costs.  All year 2000 remediation
costs will be expensed as incurred.  An additional $1.1 million of
capital costs were moved up to 1999 due to year 2000 issues.  This
amount includes $0.6 million of capital costs that may be reclassified
as expense for system upgrades at power generation facilities where
TEP has a partial interest and is not the operator.

Risks
- -----

      At this time we believe that all identified modifications to
systems which the Company operates will be made within the required
time frames.  Notwithstanding the Company's efforts, there can be no
assurance that all year 2000 problems with systems the Company
operates will be identified and remediated in a timely fashion.
Although the Company believes that, as a result of its year 2000
program, any problems arising from the failure to achieve year 2000
readiness will be minor, it is possible that such failure could
disrupt the generation, transmission or distribution of electric
energy or the billing and collection process.  We cannot assure the
year 2000 readiness status of systems or parties that the Company does
not control.  We cannot assess the effect on the Company of non-
compliance by systems or parties that the Company does not control.

     TEP and other electric service providers in the WSCC are
evaluating potential year 2000 risks resulting from interconnected
electric and informational systems.  Such interconnected systems are
critical to the reliability and integrity of each interconnected
electric service provider.  It is possible that the failure of one
such interconnected provider to achieve year 2000 readiness could
disrupt the provision of electric services by others.  TEP and other
providers in the WSCC are working together in an effort to avoid such
disruptions.  TEP will participate in a 2nd Neighboring
Interconnection meeting planned for December 7,1998, involving our
adjacent Electric Utilities in the Southwest.  TEP has scheduled
compliance testing to coincide with the NERC 1st Industry Coordinated
drill on April 8, 1999, and the 2nd drill on September 8, 1999.

Contingency Plans
- -----------------

     The Company is preparing contingency plans to address the
possibility that not all remediation efforts will succeed.  TEP is
documenting scenarios and has a schedule to document a draft
mitigation plan by December 31, 1998.  The plan includes procedure
development, tests, and drills to coincide with the NERC plans.

SAFE HARBOR FOR FORWARD-LOOKING STATEMENTS
- ------------------------------------------

      This Quarterly Report on Form 10-Q contains forward-looking
statements as defined by the Private Securities Litigation Reform Act
of 1995.  UniSource Energy and TEP include the following cautionary
statements to take advantage of the safe harbor provisions of the
Private Securities Litigation Reform Act of 1995 for any forward-
looking statements made by, or for, UniSource Energy or TEP in this
Quarterly Report on Form 10-Q.  Forward-looking statements include
statements concerning plans, objectives, goals, strategies, future
events or performance and underlying assumptions.  They include
statements which are not statements of historical fact.  Such forward-
looking statements may be identified by the use of words such as
"anticipates," "estimates," "expects," "intends," "plans," "predicts,"
"projects," and similar expressions.  UniSource Energy and TEP may
occasionally publish or make available forward-looking statements of
this nature. These cautionary statements and any other cautionary
statements which may accompany the forward-looking statements
expressly qualify all such forward-looking statements, whether written
or oral, and whether made by or for UniSource Energy or TEP.  In
addition, UniSource Energy and TEP disclaim any obligation to update
any forward-looking statements to reflect events or circumstances
after the date we make forward-looking statements.

      Forward-looking statements involve risks and uncertainties which
could cause actual results or outcomes to differ materially from those
we express in the forward-looking statements.  We express in good
faith the expectations, beliefs and projections contained in this
document.   We believe we have a reasonable basis to make such
statements based on our examination of historical operating trends,
data contained in our records and other data available from third
parties.  However, we cannot assure that we will achieve our
expectations, beliefs or projections.  In addition to other factors
and matters discussed in this document, we believe some of the
important factors that could cause actual results to differ materially
from those we discuss in the forward-looking statements include the
following:

1.	Effects of restructuring initiatives in the electric industry and
	other energy-related industries.

2.	Changes in economic conditions, demographic patterns and weather
	conditions in TEP's retail service area.

3.	Changes affecting TEP's cost of providing electrical service including
	changes in fuel costs, generating unit operating performance, interest
	rates, tax laws, environmental laws, and the general rate of
	inflation.

4.	Changes in governmental policies and regulatory actions with respect
	to allowed rates of return, financings, rate structures, and methods
	of establishing rates.

5.	Changes affecting the cost of competing energy alternatives, including
	changes in available generating technologies and changes in the cost
	of natural gas.

6.	Changes in accounting principles or the application of such principles
	to UniSource Energy, TEP, or any subsidiary.


                      PART II - OTHER INFORMATION
                                   
ITEM 1. -- LEGAL PROCEEDINGS
- -------------------------------------------------------------------------------

TAX ASSESSMENTS

     See Note 2 of Notes to Condensed Consolidated Financial

Statements, Tax Assessments.

ITEM 5. - OTHER INFORMATION
- -------------------------------------------------------------------------------

INVESTMENTS IN ENERGY-RELATED AFFILIATES

      MEH Corporation (MEH), a wholly-owned subsidiary of UniSource
Energy, owns 100% of the stock of four subsidiaries.  We established
these subsidiaries to pursue various unregulated energy-related
investment opportunities:

	(1)	Nations Energy Corporation (Nations Energy) develops 
                independent power projects worldwide.  Recent transactions 
                completed by Nations Energy include:

		-	The sale to Trigen Energy Corporation of a 
                        48% interest in Trigen-Nations Energy, a partnership 
                        which owns and operates the 40 MW Coors Brewing 
                        Company power plant in Golden, CO.  Nations Energy 
			recorded a $5.8 million after-tax gain on the sale.  
                        Following the sale, Nations Energy owns a 1% interest
                        in Trigen-Nations.  The partnership purchased the 
                        steam and electric power plant from Coors in September
                        1995.
		-	The purchase of a minority interest in Corporation
                        Panamena de Energia, S.A. (COPESA) for $7.5 million.  
                        COPESA is an independent power producer which owns 
                        and operates a 43 MW power plant outside of Panama 
                        City. The energy is sold under a Power Purchase 
                        Agreement with an unrelated party.
		-	The purchase of a minority equity interest in the 
                        ECK Generating Power Project in the Czech Republic.
                        The 340 MW project consists of the upgrade and 
                        expansion of an existing cogeneration facility
			located in the city of Kladno.  The project is 
                        scheduled for completion in late 1999.  Once 
                        completed, the generating facility will sell 
                        power to a regional distribution company and to 
                        an adjacent industrial complex.

	(2)	Millennium Energy Holdings, Inc. (Millennium) holds a 50% 
                interest in New Energy Ventures, Inc. (NEV).  NEV, a buyer's 
                agent, provides	electric load aggregation and advisory 
                services to retail purchasers of electric energy.

		-	As of September 30, 1998, NEV had contracts to 
                        purchase energy for and	sell energy to customers 
                        principally in California and New York with a 
                        combined electrical demand of more that 1,850 MW.  
                        NEV began serving its California customers on March 
                        31, 1998 when the California retail electricity 
                        market opened to competition.
		-	In October 1998, the Company and NEV announced the 
                        formation of a new subsidiary, NEV Southwest L.L.C., 
                        with offices in Tucson and Phoenix.NEV Southwest will 
                        be responsible for developing new customer service 
                        opportunities, including energy supply and trading,
			in Arizona, Nevada, Utah, Colorado, and New Mexico, 
                        as these states move ahead with plans to open to 
                        retail electric competition.
		-	NEV Technologies, a subsidiary of NEV, and its joint 
                        ventures hold exclusive distribution rights for the 
                        AlliedSignal TurboGeneratorTM in the western U.S. 
                        and certain international markets.  In October 1998, 
                        Edison International made a $10 million minority 
                        equity investment in NEV Technologies.  NEV 
                        Technologies' two joint ventures are 50% owned by 
                        Dames & Moore Ventures.  NEV owns the remainder of 
                        NEV Technologies.

	(3)	Advanced Energy Technologies, Inc. (AET) holds a 50% interest 
                in Global Solar Energy, L.L.C. (Global Solar), a manufacturer 
                of thin-film photovoltaic cells.

	(4)	Southwest Energy Solutions, Inc. (SES) provides ancillary 
                energy services to electric consumers.  SES owns 100% of the 
                stock of SWPP Investment Company (SWPP) and SWPP International,
                Ltd. (SWPPI), which hold ownership interests in businesses 
                engaged in the manufacture and sale of concrete power poles.

ADDITIONAL FINANCIAL DATA

The following table reflects the ratio of earnings to fixed charges
for TEP:

					      12 Months Ended
					September 30,       December 31,
 					    1998               1997
	  				    ----               ----
Ratio of Earnings to Fixed Charges          1.30               1.39


ITEM 6. -- EXHIBITS AND REPORTS ON FORM 8-K
- -------------------------------------------------------------------------------

(a)  Exhibits.
     
     -- See Exhibit Index.

(b)   Reports on Form 8-K.
     
     -- Dated August 27, 1998, reporting on TEP's Stranded Cost
          Recovery Plan filed with the ACC, TEP's Rate Settlement
          Agreement, and the TEP/UniSource Energy Warrant Exchange
          Offer.
     


                               SIGNATURE


     Pursuant to the requirements of the Securities Exchange Act of
1934, each registrant has duly caused this report to be signed on its
behalf by the undersigned thereunto duly authorized.  The signature
for each undersigned company shall be deemed to relate only to matters
having reference to such company or its subsidiary.


                                    UNISOURCE ENERGY CORPORATION
				    -----------------------------
					   (Registrant)

Date:  November 12, 1998                    Ira R. Adler
				    ------------------------------
					    Ira R. Adler
                                 Executive Vice President and Principal
                                          Financial Officer



                                   TUCSON ELECTRIC POWER COMPANY
                                  --------------------------------
                                            (Registrant)


Date:  November 12, 1998                     Ira R. Adler
                                  ---------------------------------		
                                             Ira R. Adler
                                Executive Vice President and Principal
                                             Financial Officer





                             EXHIBIT INDEX
                                   
     * 4 -  Form of Warrant Agreement relating to the UniSource
 	    Energy Warrants (Form S-4, Registration Statement No. 333-
	    60809--Exhibit 4(a)).
      11 -  Statement re computation of per share earnings - UniSource
	    Energy.
      12 -  Computation of Ratio of Earnings to Fixed Charges - TEP.
      15(a)-Letter regarding unaudited interim financial information
	    (PricewaterhouseCoopers LLP).
      15(b)-Letter regarding unaudited interim financial information
	    (Deloitte &Touche LLP).
      27(a)-Financial Data Schedule - UniSource Energy.
      27(b)-Financial Data Schedule - TEP.
     

     (*) Previously filed as indicated and incorporated herein by reference.

<PAGE>

                                       PART II.

                        INFORMATION NOT REQUIRED IN PROSPECTUS


    
   
    

          ITEM 21. EXHIBITS.

   
               Reference is made to the Exhibit Index on page II-3 hereof.
    

   
    

                                      II-1
     <PAGE>

                                      SIGNATURES

   
            Pursuant to the requirements of the Securities Act of 1933, the
       Registrant has duly caused this Amendment No. 2 to the Registration
       Statement to be signed on its behalf by the undersigned, thereunto duly
       authorized, in the City of Tucson, State of Arizona on December 18,
       1998.
    

                           TUCSON ELECTRIC POWER COMPANY

                           By:  /s/ Ira R. Adler
                               ------------------------------
                               IRA R. ADLER
                               Executive Vice President
                               Principal Financial Officer


   
         Pursuant to the requirements of the Securities Act of 1933, this
       Amendment No. 2 to the Registration Statement has been signed by the
       following persons in the capacities and on the dates indicated.
    

   

       Date:  December 18, 1998        *
                                     ------------------------------------
                                     James S. Pignatelli
                                     Chairman of the Board, President and
                                     Principal Executive Officer


       Date:  December 18, 1998        /s/ Ira R. Adler
                                     ------------------------------------
                                     Ira R. Adler
                                     Executive Vice President, Principal
                                     Financial Officer and Director


       Date:  December 18, 1998        /s/ Karen G. Kissinger
                                     ------------------------------------
                                     Karen G. Kissinger
                                     Vice President and Controller
                                     Principal Accounting Officer


       Date:  ___________, 1998      ------------------------------------
                                     Elizabeth T. Bilby
                                     Director


       Date:  December 18, 1998        *
                                     ------------------------------------
                                     Harold W. Burlingame
                                     Director


       Date:  December 18, 1998        *
                                     ------------------------------------
                                     John L. Carter
                                     Director


       Date:  December 18, 1998        *
                                    ------------------------------------
                                     Daniel W.L. Fessler
                                     Director



       Date:  __________, 1998       ------------------------------------
                                     John A. Jeter
                                     Director


       Date:  _________, 1998
                                     ------------------------------------
                                     George W. Miraben
                                     Director


       Date:  December 18, 1998        *
                                     ------------------------------------
                                     Martha R. Seger
                                     Director

       *   /s/ Ira R. Adler             
       ---------------------------------

       *Ira R. Adler, Attorney-in-Fact
    


                                      II-2
     <PAGE>



                                    EXHIBIT INDEX
   
    


       Exhibit No.    Description of Exhibit
       -----------    ----------------------

   
         15(a)        - Letter of Deloitte & Touche LLP regarding unaudited
                        interim financial information.

         15(b)        - Letter of PricewaterhouseCoopers regarding unaudited
                        interim financial information.

         23(b)        - The Consent of Deloitte & Touche LLP.
    




                                      II-3


     <PAGE>



                                                              Exhibit 15(a)






          Tucson Electric Power Company
          220 West Sixth Street
          Tucson, Arizona 85701


          We have made a review, in accordance with standards established
          by the American Institute of Certified Public Accountants, of the
          unaudited interim financial information of Tucson Electric Power
          Company and subsidiaries (the Company) for the periods ended
          March 31, 1997, June 30, 1997 and September 30, 1997, as
          indicated in our reports dated February 23, 1998; because we did
          not perform an audit, we expressed no opinion on that
          information.

          We are aware that our reports referred to above, which were
          included in your Quarterly Reports on Form 10-Q for the quarters
          ended March 31, 1998, June 30, 1998 and September 30, 1998, are
          incorporated by reference in this Amendment No. 2 to Registration
          Statement No. 333-65143 of the Company on Form S-4.

          We also are aware that the aforementioned reports, pursuant to
          Rule 436(c) under the Securities Act of 1933, are not considered
          a part of this Amendment to the Registration Statement prepared
          or certified by an accountant or reports prepared or certified by
          an accountant within the meaning of Sections 7 and 11 of that
          Act.

         /s/ Deloitte & Touche LLP

          December 17, 1998




                                                              Exhibit 15(b)





          December 17, 1998



          Securities and Exchange Commission
          450 Fifth Street, N.W.
          Washington, D.C. 20549


          Ladies and Gentlemen:

          We are aware that Tucson Electric Power Company has included our
          reports dated May 5, 1998, August 4, 1998 and November 6, 1998
          (issued pursuant to the provisions of Statement on Auditing
          Standards No. 71) in the Prospectus constituting part of its
          Registration Statement on Form S-4 to be filed on or about
          December 18, 1998.  We are also aware of our responsibilities
          under the Securities Act of 1933.


          Yours very truly,

          /s/ PricewaterhouseCoopers LLP







                                                              Exhibit 23(b)







          INDEPENDENT AUDITORS' CONSENT


          We consent to the incorporation by reference in this Amendment
          No. 2 to Registration Statement No. 333-65143 of Tucson Electric
          Power Company on Form S-4 of our report dated February 23, 1998,
          appearing in the Annual Report on Form 10-K of Tucson Electric
          Power Company, as amended by Form 10K/A, dated March 5, 1998, for
          the year ended December 31, 1997, and to the reference to us
          under the heading "Experts" in the Prospectus, which is part of
          this Registration Statement.

          /s/ Deloitte & Touche LLP 

          Tucson, Arizona
          December 17, 1998



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission