ARIZONA PUBLIC SERVICE CO
S-3, 1998-07-02
ELECTRIC & OTHER SERVICES COMBINED
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   As filed with the Securities and Exchange Commission on July 2, 1998
                                                      Registration No. 333-
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                               ----------------
                                    FORM S-3
                             REGISTRATION STATEMENT
                                     Under
                           THE SECURITIES ACT OF 1933
                               ----------------
                         ARIZONA PUBLIC SERVICE COMPANY
             (Exact name of Registrant as specified in its charter)

             ARIZONA                                       86-0011170
     (State of incorporation)                           (I.R.S. Employer     
                                                     Identification Number)     

                             400 North Fifth Street
                             Phoenix, Arizona 85004
                                 (602) 250-1000
    (Address, including zip code and telephone number, including area code,
                  of registrant's principal executive offices)
                               ----------------
                               MATTHEW P. FEENEY
                             Snell & Wilmer L.L.P.
                               One Arizona Center
                             Phoenix, Arizona 85073
                                 (602) 382-6239
            (Name, address, including zip code and telephone number,
                   including area code, of agent for service)
                               ----------------
     Approximate  date of commencement of proposed sale to the public: From time
to  time  after the effective date of this Registration Statement, as determined
by market conditions and other factors.
                               ----------------
     If  the  only  securities  being  registered on this Form are being offered
pursuant  to dividend or interest reinvestment plans, please check the following
box. [ ]
     If  any  of  the securities being registered on this Form are to be offered
on  a  delayed or continuous basis pursuant to Rule 415 under the Securities Act
of  1933,  other  than  securities  offered  only in connection with dividend or
interest reinvestment plans, check the following box. [X]
     If  this  Form  is  filed to register additional securities for an offering
pursuant  to  Rule  462(b)  under the Securities Act, please check the following
box  and  list  the  Securities Act Registration Statement number of the earlier
effective registration statement for the same offering. [ ]
     If  this  Form  is a post-effective amendment filed pursuant to Rule 462(c)
under  the  Securities  Act, check the following box and list the Securities Act
registration  statement  number  of the earlier effective registration statement
for the same offering. [ ]
     If delivery of the  prospectus is expected to be made pursuant to Rule 434,
please check the following box. [X]
                               ----------------
         C A L C U L A T I O N   O F   R E G I S T R A T I O N   F E E
<TABLE>
<CAPTION>
==================================================================================================
                                                   Proposed         Proposed
                                                    Maximum          Maximum
                                     Amount        Offering         Aggregate        Amount of
    Title of Each Class of           to be           Price          Offering        Registration
 Securities to be Registered       Registered      Per Unit           Price             Fee
- --------------------------------------------------------------------------------------------------
<S>                               <C>                 <C>        <C>                <C>
First Mortgage Bonds ...........     (1)(3)           (2)          (1)(2)(3)             N/A
- --------------------------------------------------------------------------------------------------
Senior Notes ...................     (1)(4)           (2)          (1)(2)(4)             N/A
- --------------------------------------------------------------------------------------------------
Debt Securities ................     (1)(5)           (2)          (1)(2)(5)             N/A
- --------------------------------------------------------------------------------------------------
 Total .........................  $350,000,000        (2)        $350,000,000       $ 103,250 (6)
==================================================================================================
</TABLE>                                                                        
(1) In  no  event  will  the  aggregate initial offering price of all securities
    issued  from  time  to  time  pursuant to this Registration Statement exceed
    $350,000,000.  If  any  such  securities  are  issued  at  an original issue
    discount,  then  the aggregate initial offering price as so discounted shall
    not  exceed  $350,000,000,  notwithstanding that the stated principal amount
    of such securities may exceed such amount.
(2) The  proposed  maximum  initial  offering price per unit will be determined,
    from  time  to  time,  by  the Registrant in connection with the issuance by
    the Registrant of the securities registered hereunder.
(3) Subject   to   Footnote   (1),  there  are  being  registered  hereunder  an
    indeterminate  principal  amount  of  First  Mortgage  Bonds as may be sold,
    from time to time, by the Registrant.
(4) Subject   to   Footnote   (1),  there  are  being  registered  hereunder  an
    indeterminate  amount  of Senior Notes as may be sold, from time to time, by
    the Registrant.
(5) Subject   to   Footnote   (1),  there  are  being  registered  hereunder  an
    indeterminate  principal  amount  of  Debt  Securities  as may be sold, from
    time to time, by the Registrant.
(6) Calculated  pursuant  to  Rule 457(o) of the rules and regulations under the
    Securities Act of 1933.
  Pursuant  to Rule 429 of the rules and regulations under the Securities Act of
1933,  this  Registration  Statement  contains a combined prospectus relating to
the   $350,000,000   principal   amount  of  securities  registered  hereby  and
$50,000,000  principal  amount  of  securities  registered  on  August  12, 1997
pursuant   to  Registration  No.  333-27551.  The  previously-paid  filing  fees
associated  with  the  referenced  securities  registered under Registration No.
333-27551 totalled $15,152.
  The  Registrant  hereby  amends  this  Registration  Statement on such date or
dates  as  may  be  necessary  to  delay its effective date until the Registrant
shall  file a further amendment which specifically states that this Registration
Statement  shall  thereafter become effective in accordance with Section 8(a) of
the  Securities  Act  of 1933, or until this Registration Statement shall become
effective  on such date as the Commission, acting pursuant to said Section 8(a),
may determine.
================================================================================
<PAGE>
INFORMATION   CONTAINED   HEREIN  IS  SUBJECT  TO  COMPLETION  OR  AMENDMENT.  A
REGISTRATION  STATEMENT  RELATING  TO  THESE  SECURITIES HAS BEEN FILED WITH THE
SECURITIES  AND  EXCHANGE  COMMISSION.  THESE SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS  TO  BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE  AN  OFFER  TO  SELL OR THE
SOLICITATION  OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
IN  ANY  STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.

                    SUBJECT TO COMPLETION, DATED JULY 2, 1998


                         Arizona Public Service Company

                              First Mortgage Bonds
                                  Senior Notes
                                Debt Securities

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

     Arizona  Public  Service  Company (the "Company") intends from time to time
to  issue  up  to  $400,000,000 aggregate principal amount of its first mortgage
bonds  (the  "New  Bonds"), senior notes (the "Senior Notes"), or unsecured debt
securities  ("Debt Securities") (collectively, the "Securities"), in one or more
series at prices and on terms to be determined at the time of sale.

     Until  the  Release Date (see "Description of Senior Notes--Release Date"),
the  Senior  Notes  will  be  secured  by  one or more series of New Bonds. As a
result,  when  the  Company  issues  Senior Notes, the Company will issue a like
amount  of  New  Bonds  to the Senior Note Trustee (as defined herein) to secure
the  newly-issued Senior Notes. See "Description of Senior Notes--Security". The
Company  may  also  issue  New  Bonds  directly  to purchasers or through agents
designated  from  time  to time by the Company (see "Description of New Bonds").
As  of  March  31,  1998  (i) the Senior Note Trustee held $150 million of first
mortgage  bonds  as  collateral for $150 million of outstanding senior notes and
(ii)  approximately $1.1 billion of additional first mortgage bonds (i.e., first
mortgage  bonds  that  do  not  secure Senior Notes) were outstanding. Until the
Release  Date,  the  Company's  senior  notes (including the Senior Notes issued
pursuant  to  this  Prospectus)  will  effectively  rank  pari  passu  with  the
Company's outstanding first mortgage bonds.

     For  each  issue of Securities for which this Prospectus is being delivered
(the  "Offered  Bonds,"  the  "Offered  Senior  Notes,"  or  the  "Offered  Debt
Securities"  and,  collectively,  the  "Offered  Securities"),  there will be an
accompanying  Prospectus  Supplement  (the  "Prospectus  Supplement")  that sets
forth,   without   limitation   and  to  the  extent  applicable,  the  specific
designation,  aggregate  principal  amount,  denomination, maturity, premium, if
any,  rate of interest (which may be fixed or variable) or method of calculation
thereof,  time  of  payment  of  interest, any terms for redemption, any sinking
fund  provisions,  any  subordination  provisions,  the  initial public offering
price,  the  names of any underwriters or agents, the principal amounts, if any,
to  be  purchased  by the underwriters, the compensation of such underwriters or
agents,  and  any  other special terms of the Offered Securities. The Prospectus
Supplement  relating  to  any  series  of  Offered  Securities will also contain
information  concerning certain United States federal income tax considerations,
if applicable to the Offered Securities.

     The  Company  may  sell Securities directly to purchasers or through agents
designated  from  time to time by the Company or to or through underwriters or a
group  of  underwriters which may be managed by one or more underwriters. If any
agents  of  the  Company  or  any  underwriters  are  involved  in  the  sale of
Securities  in respect of which this Prospectus is being delivered, the names of
such  agents  or  underwriters and any applicable commission or discount will be
set  forth  in  the  applicable  Prospectus  Supplement. The net proceeds to the
Company  from  the  sale of Securities will be the public offering price of such
Securities   less  such  discount,  in  the  case  of  an  offering  through  an
underwriter,  or  the purchase price of such Securities less such commission, in
the  case  of  an  offering  through  an  agent,  and  less, in each case, other
expenses  of  the  Company associated with the issuance and distribution of such
Securities.

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

    THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
     AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
      SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
                  PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
                 PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY
                             IS A CRIMINAL OFFENSE.

                               ----------------
                  The date of this Prospectus is _______, 1998
<PAGE>
                             AVAILABLE INFORMATION

     Arizona   Public   Service  Company  (the  "Company")  is  subject  to  the
informational  requirements  of  the Securities Exchange Act of 1934, as amended
(the  "1934  Act"), and in accordance therewith files reports, proxy statements,
and   other  information  with  the  Securities  and  Exchange  Commission  (the
"Commission").  Such  reports,  proxy  statements,  and other information can be
obtained   at  prescribed  rates  from  the  Public  Reference  Section  of  the
Commission  or  may  be  inspected and copied at the public reference facilities
maintained  by  the Commission at 450 Fifth Street, N.W., Washington, D.C. 20549
and  at  certain  of  its  regional  offices located at 500 West Madison Street,
Suite  1400,  Chicago, Illinois 60661; and Seven World Trade Center, Suite 1300,
New   York,  New  York  10048.  In  addition,  such  material  may  be  accessed
electronically  by  means  of  the  Commission's  Web  Site  on  the Internet at
http://www.sec.gov.  Certain  securities  of  the  Company are listed on the New
York  Stock Exchange. Reports, proxy materials, and other information concerning
the  Company can be inspected at the office of this exchange at 20 Broad Street,
7th Floor, New York, New York 10005.

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

                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

     The  following  documents  previously  filed  with  the  Commission  by the
Company (File No. 1-4473) are incorporated by reference in this Prospectus:

     1.  The  Company's  Form 10-K Report for the fiscal year ended December 31,
1997 (the "1997 10-K Report");

     2.  The  Company's  Form 10-Q Report for the fiscal quarter ended March 31,
1998;

     3. The Company's Form 8-K Report dated January 13, 1998; and

     4.  The  Company's  Form  8-K  Report  dated  May  19,  1998  (the "May 8-K
Report").

     All  documents  filed by the Company pursuant to Sections 13(a), 13(c), 14,
or  15(d)  of the 1934 Act after the filing date of the May 8-K Report and prior
to  the  termination  of  the offering of the securities offered hereby shall be
deemed  to  be  incorporated  by  reference  in this Prospectus and to be a part
hereof from the date of filing of such documents.

     Any  statement  contained  in  a  document incorporated by reference herein
shall  be deemed to be modified or superseded for purposes of this Prospectus to
the  extent that a statement contained herein or in any other subsequently filed
document  which  is also incorporated by reference herein modifies or supersedes
such  statement.  Any  statement  so modified or superseded shall not be deemed,
except as modified or superseded, to constitute a part of this Prospectus.

     The  Company  will  provide  without  charge  to each person, including any
beneficial  owner, to whom a copy of this Prospectus is delivered, upon the oral
or  written  request  of  such  person,  a  copy  of any or all of the documents
referred  to  above which have been or may be incorporated in this Prospectus by
reference,  other  than  exhibits  to  such  documents.  Request for such copies
should  be  directed to Arizona Public Service Company, Office of the Secretary,
Station 9068, P.O. Box 53999, Phoenix, Arizona 85072-3999, (602) 250-3252.
                                        2
<PAGE>
                              SELECTED INFORMATION

     The  following  material  is  qualified in its entirety by reference to the
detailed  information and financial statements incorporated by reference in this
Prospectus.

<TABLE>
                                             The Offering

<S>                                      <C>
Securities Offered ...................   Up to $400,000,000 of any combination of First Mortgage
                                         Bonds, Senior Notes, and Debt Securities.
Application of Proceeds ..............   Except as otherwise described in the Prospectus Supple-
                                         ment, the net proceeds of the Offered Securities will be ap-
                                         plied primarily to the redemption, repurchase, repayment, or
                                         retirement of outstanding indebtedness and preferred stock,
                                         and temporary investment pending such application.

                                              The Company

Business .............................   Electric utility servicing approximately 767,000 customers in
                                         an area that includes the entire state of Arizona with the
                                         exception of Tucson and about one-half of the Phoenix area.

Generating Fuel Mix (estimated for the
 twelve months ended March 31,
 1998) ...............................   Coal -- 36.9%; Nuclear -- 29.4%; Purchases -- 30.3%;
                                         Gas and Other -- 3.4%.
</TABLE>

Financial Data (thousands of dollars):

<TABLE>
<CAPTION>
                                                                        Twelve Months Ended
                                                 -----------------------------------------------------------------
                                                                                     December 31,
                                                  March 31,        -----------------------------------------------
                                                   1998(1)             1997              1996              1995
                                                 -----------       -----------       -----------       -----------
<S>                                              <C>               <C>               <C>               <C>
Electric Operating Revenues ................     $ 1,879,955       $ 1,878,553       $ 1,718,272       $ 1,614,952
                                                 ===========       ===========       ===========       ===========
Net Income .................................     $   254,784       $   251,493       $   243,471       $   239,570
                                                 ===========       ===========       ===========       ===========
Ratio of Earnings to Fixed Charges .........            3.11              3.07              2.84              2.77
</TABLE>

Capitalization Data (thousands of dollars):

<TABLE>
<CAPTION>
                                                                                   As Adjusted(2)
                                                             As of          ---------------------------
                                                        March 31, 1998(1)     Amount         Percentage
                                                        -----------------   ----------       ----------
<S>                                                        <C>              <C>                <C>
Total Debt (including current maturities) .........        $2,104,316       $2,125,316          52.4%
Preferred Stock ...................................           160,427          139,427           3.4
Common Stock Equity ...............................         1,793,514        1,793,514          44.2
                                                           ----------       ----------         -----
   Total Capitalization ...........................        $4,058,257       $4,058,257         100.0%
                                                           ==========       ==========         =====
</TABLE>

- ------------
(1) Financial  information  as of and for the twelve months ended March 31, 1998
    is  unaudited  but,  in  the  judgment of the Company's management, contains
    all   necessary  adjustments  for  a  fair  presentation  of  the  financial
    position  of  the  Company  on  such  date and the results of operations for
    such period.

(2) For  the  (i) redemption, repayment, repurchase or retirement of $21 million
    of  the  Company's  cumulative  preferred  stock;  and  (ii)  incurring  $21
    million  of  debt.  It is assumed that the net proceeds from the issuance of
    the  Offered  Securities  will  be  used  for  the  refinancing of a similar
    amount of outstanding long-term debt.
                                       3
<PAGE>
                                  THE COMPANY

     The  Company  was  incorporated  in  1920  under the laws of Arizona and is
principally  engaged  in  providing  electricity  in  the  State of Arizona. The
principal  executive  offices  of  the  Company  are  located at 400 North Fifth
Street, Phoenix, Arizona 85004 and its telephone number is (602) 250-1000.


                            APPLICATION OF PROCEEDS

     Except  as  otherwise  described  in  the  Prospectus  Supplement,  the net
proceeds  of the Offered Securities will be applied primarily to the redemption,
repurchase,  repayment,  or retirement of outstanding indebtedness and preferred
stock.  Any  proceeds  not  immediately so applied when received may be invested
temporarily,  pending  such  application,  in United States government or agency
obligations,  commercial  paper,  bank  certificates  of  deposit, or repurchase
agreements  collateralized by United States government or agency obligations, or
will be deposited with banks.


                                EARNINGS RATIOS

     The  following  table sets forth the Company's historical ratio of earnings
to fixed charges for each of the indicated periods:

                          Twelve months ended
- ---------------------------------------------------------------------
                                    December 31,
 March 31,       ----------------------------------------------------
   1998          1997        1996        1995        1994        1993
 ---------       ----        ----        ----        ----        ----

    3.11         3.07        2.84        2.77        2.96        2.99

     For  the  purposes of these computations, "earnings" are defined as the sum
of  pre-tax  income  plus  fixed  charges  of  the Company and its subsidiaries;
"fixed  charges"  consist  of  interest  on debt, amortization of debt discount,
premium, and expense and an estimated interest factor in rentals.


                                   SECURITIES

     The  Securities  may  be issued in one or more series as (i) first mortgage
bonds  ("New  Bonds"),  (ii)  notes  secured until the Release Date by New Bonds
and,  thereafter  (see  "Description  of  Senior  Notes -- Release Date"), being
unsecured  notes (such notes are herein referred to as "Senior Notes"), or (iii)
unsecured  debt  securities  ("Debt  Securities").  From  and after the "Release
Date"  (as  defined  below),  any  outstanding Senior Notes secured by New Bonds
when  issued  will  cease to be secured and will become unsecured obligations of
the  Company.  The  New Bonds are described below under the caption "Description
of  New  Bonds,"  the  Senior  Notes  are  described  below  under  the  caption
"Description  of  Senior  Notes,"  and  the  Debt Securities are described below
under the caption "Description of Debt Securities."


                           DESCRIPTION OF NEW BONDS
General

     The  New  Bonds  may be issued in one or more new series under the Mortgage
and  Deed  of Trust dated as of July 1, 1946 between the Company and The Bank of
New  York,  as  successor  Trustee ("Bond Trustee"), which as heretofore amended
and  supplemented  is  herein  referred to as the "Mortgage," and which is to be
further  amended  and supplemented by appropriate Supplemental Indentures ("Bond
Supplemental  Indentures").  The  following  summary  does  not  purport  to  be
complete  and  is subject in all respects to the provisions of, and is qualified
in  its  entirety  by  reference  to,  the Mortgage, the New Bonds, and the Bond
Supplemental  Indentures,  the  forms  of  which are filed, or will be filed, as
exhibits  to  the  registration statement of which this Prospectus forms a part.
Whenever  particular  provisions or defined terms in such documents are referred
to  herein  or  in a Prospectus Supplement, such provisions or defined terms are
incorporated by reference herein or therein, as the case may be.
                                       4
<PAGE>
     Reference  is  made to the Prospectus Supplement relating to any particular
issue  of  Offered  Bonds  for  the following terms: (1) the aggregate principal
amount  of  the  Offered Bonds; (2) the date on which such Offered Bonds mature;
(3)  the  rate per annum at which such Offered Bonds will bear interest; (4) the
times  at which such interest will be payable; (5) the date, if any, after which
such  Offered  Bonds  may  be  redeemed  at  the  option  of the Company and the
redemption  price;  (6)  whether  any  of such Offered Bonds will be issuable in
whole  or  in  part in the form of one or more Global Securities and, if so, the
Depositaries  for  such  Global Securities, the form of any legend or legends to
be  borne  by  any  such  Global Security, and any circumstances under which any
such  Global  Security  may  be exchanged in whole or in part for Offered Bonds,
registered  in  the  names  of persons other than the Depositary for such Global
Security  or its nominee; and (7) any other special terms. Interest will be paid
to  the  person  in  whose name the Offered Bonds are registered at the close of
business  on  the record date, as established in the Bond Supplemental Indenture
relating  thereto,  preceding  the interest payment date in respect thereof. The
New  Bonds  will  be  issued  as  fully  registered  bonds,  without coupons, in
denominations   of   $1,000  and  multiples  thereof.  The  New  Bonds  will  be
transferable  at  any  time without any service or other charge, except transfer
taxes and other governmental charges, if any.

     Except  as  otherwise described under the heading "Description of New Bonds
- --  Issuance of Additional Bonds" or in the Prospectus Supplement, the covenants
contained  in the Mortgage and the New Bonds would not afford holders of the New
Bonds  protection  in  the event of a highly-leveraged transaction involving the
Company.

Redemption

     The  Offered Bonds are redeemable as set forth in the Prospectus Supplement
relating  thereto  and, subject to any qualifications or variations set forth in
any  such Prospectus Supplement, are also subject to redemption, in each case at
the  principal  amount of the Offered Bonds to be redeemed together with accrued
interest  to  the  date  fixed  for redemption, (i) in whole or in part with the
proceeds  from  mortgaged property of the Company taken under eminent domain by,
or  otherwise  sold  to, a governmental body or agency; (ii) in whole or in part
with  the  Proceeds  of  Released  Property, including proceeds from the sale or
other  disposition  (including  a  sale and leaseback) of property released from
the  lien  of the Mortgage as specified in section (b) of the second to the last
paragraph  under  the  heading "Description of New Bonds -- Security" below; and
(iii)  in  whole,  together  with  all other first mortgage bonds of the Company
then  outstanding, within twelve months of certain mergers or other transactions
involving  the transfer of substantially all of the property subject to the lien
of  the  Mortgage, as then amended. In addition, after the date and at the price
set  forth  in the Prospectus Supplement, Offered Bonds may be redeemed in whole
or in part with cash deposited in the replacement fund discussed below.

Security

     The  New  Bonds  will  rank  pari  passu,  except as to any sinking fund or
similar  fund  provided  for  a  particular  series,  with all bonds at any time
outstanding  under  the Mortgage. The Mortgage constitutes a first mortgage lien
on  substantially  all  the  fixed property owned by the Company (which does not
include  a combined cycle plant or certain interests in Unit 2 of the Palo Verde
Nuclear  Generating  Station  being  leased),  other  than property specifically
excepted  by  the  Mortgage. Such lien and the Company's title to certain of its
properties  are  subject  to  Excepted  Encumbrances,  to minor leases, defects,
irregularities,  and  deficiencies,  and  to  the considerations discussed below
with  respect  to  the  Four Corners and Navajo Plant locations. The lien of the
Mortgage  will  also  extend  to  all  after-acquired  property  (other than the
excepted   classes)   located  in  the  jurisdictions  in  which  the  necessary
recordations   or   filings   have   been   accomplished,  subject  to  Excepted
Encumbrances  and  to  liens  existing or placed on such property at the time of
its acquisition by the Company.

     Both  the  Four  Corners and the Navajo Plants are located on property held
by  the plant participants under leases from the Navajo Tribe and easements from
the  Secretary  of  the  Interior.  The  leases  extend  from  their  respective
effective  dates  in  1966 and 1969 for terms of 50 years with rights of renewal
for  up  to  25  additional  years. The easements are for 50-year terms from the
same  effective  dates.  While  the Company owns the rights conferred upon it by
the leases from the Navajo Tribe, the Company does not
                                       5
<PAGE>
make  any  representation  with  respect  to  the  Tribe's interest in the lands
leased  (but  is not aware of any assertion of a contesting claim to such lands)
or with respect to the enforceability of the leases against the Tribe.

     The  Mortgage  requires the Company to keep the property encumbered thereby
as  an operating system or systems in good repair and working order, but permits
the  permanent  discontinuance  or  reduction in capacity of any such properties
which,  in  the  judgment of the Board of Directors of the Company, is desirable
in  the conduct of its business or which is ordered by a regulatory authority or
which properties are to be sold or disposed of by the Company.

     When  not in default under the Mortgage, the Company may obtain the release
from  the  lien thereof of (a) property that has become unserviceable, obsolete,
or  unnecessary  for  use in the Company's operations, provided that it replaces
such  property  with,  or  substitutes  for  the  same,  an equal value of other
property,  and  (b)  other property that has been sold or otherwise disposed of,
provided  that  the  Company  deposits  with the Bond Trustee cash in an amount,
waives  the  right  to  issue  additional  bonds  on  the basis of retired bonds
previously  issued  in an amount, or utilizes as a credit net Property Additions
acquired  by the Company within the preceding five years and having a fair value
(not more than Cost), equal to the fair value of the property to be released.

     The  Bond  Trustee  may,  and upon request of the Company shall, cancel and
discharge  the  lien  of  the  Mortgage  and all indentures supplemental thereto
whenever all indebtedness secured by the Mortgage has been paid.

Issuance of Additional Bonds

     Additional  bonds  may  be  issued under the Mortgage in a principal amount
equal  to (a) 60% of net Property Additions, (b) the principal amount of certain
redeemed  or  retired  bonds  previously  issued,  and/or  (c)  deposited  cash,
provided  that  the  Company's  Adjusted Net Earnings over a twelve-month period
are  at least two times the annual interest on all bonds to be outstanding under
the  Mortgage  after  the  issuance  and on indebtedness secured by prior liens.
Exceptions  to  this  earnings coverage requirement apply to bonds issued on the
basis  of  redeemed  or retired bonds where the redeemed or retired bonds bore a
higher  rate  of  interest  and where certain other conditions are satisfied. In
addition,  the  Company's  articles  of incorporation allow the Company to issue
additional  preferred stock when certain earnings coverage requirements are met.
Exceptions  to  this  earnings  coverage  requirement  apply  to preferred stock
issued for the purpose of redeeming or retiring other preferred stock.

     As  of  March  31,  1998,  the  Company estimates that the Mortgage and the
articles  of  incorporation  would  have  allowed  the  Company  to  issue up to
approximately  $2.04  billion  and  $1.46  billion  of additional first mortgage
bonds and preferred stock, respectively.

     In  addition  to  the  Mortgage  restrictions  on the Company's issuance of
additional  bonds,  the  Company  must obtain ACC approval before issuing equity
securities  or  incurring  long-term debt. Existing ACC orders allow the Company
to  have  approximately  $501  million in aggregate par value of preferred stock
and   approximately   $2.6   billion  in  principal  amount  of  long-term  debt
outstanding  at  any  one  time. The Company does not expect these provisions or
authorizations  to limit the Company's ability to meet its capital requirements.
 
     Property  Additions,  and  in  many instances redeemed or retired bonds, as
well  as  deposited cash, may be used for certain alternative purposes under the
Mortgage,  including  the  release  of  property  from  the  lien thereof or the
satisfaction  of sinking or replacement fund requirements. The Mortgage contains
restrictions  on  the  issuance  of  bonds,  withdrawal  of  cash, or release of
property  on  the  basis of property subject to prior liens. Property located on
leaseholds  or  easements  (as, for example, the Four Corners and Navajo Plants)
will  constitute fundable Property Additions if the leasehold or easement has an
unexpired  term  of,  or  the term is extendable at the Company's option for, at
least  30  years after the time of funding, or if the property may be removed by
the Company without compensation.

Replacement Fund

     So  long  as  any of the New Bonds are outstanding, the Company is required
for  each  calendar year to deposit with the Bond Trustee cash in a formularized
amount related to net additions to the Company's
                                       6
<PAGE>
mortgaged  utility  plant;  however,  the Company may satisfy all or any part of
the  requirement by utilizing redeemed or retired bonds, net Property Additions,
or  property  retirements.  For 1997, such requirement amounted to approximately
$134  million.  Any  cash  that  may be deposited by the Company pursuant to the
requirement  may,  upon  request by the Company, be applied to the redemption or
purchase  of  bonds  and, if not withdrawn against Property Additions or retired
bonds  within  five  years,  must  be  so  applied,  subject in each case to any
restrictions  on  any such redemption or purchase as set forth in the Prospectus
Supplement relating to the issue of bonds to be redeemed or purchased.

Events of Default

     The  following  are  defaults  under  the  Mortgage: (a) failure to pay the
principal  of  any bond outstanding under the Mortgage when due and payable; (b)
failure  to  pay  interest  on any bond outstanding under the Mortgage within 60
days  after  the  same is due and payable; (c) failure to pay any installment of
any  fund  required  to  be  applied  to  the  purchase  or  redemption of bonds
outstanding  under  the  Mortgage  within  60  days  after  the  same is due and
payable;  (d)  certain  events in bankruptcy, insolvency, or reorganization; and
(e)  failure  to  perform  any  other covenant of the Mortgage continuing for 90
days  after  notice by the Bond Trustee or holders of 15% in principal amount of
Eligible  bonds.  The  Mortgage  allows  the  Bond Trustee to withhold notice of
certain  defaults,  not including any default in the payment of principal of, or
interest   on,  any  bond  outstanding,  or  in  the  payment  of  any  sinking,
improvement,  replacement,  or  purchase  fund  installment, if it in good faith
determines  that  the  withholding  of  such  notice  is in the interests of the
bondholders.

     The  holders  of  not  less than a majority in principal amount of Eligible
bonds  may  direct  the time, method, and place of conducting any proceeding for
any  remedy available to the Bond Trustee under the Mortgage; provided, however,
that  the  Trustee  may  decline  to  follow  any  such  direction under certain
circumstances,  including a determination made in good faith by the Bond Trustee
that  it  will  not  be sufficiently indemnified for any expenditures, including
its  own  charges,  in  any  action  or  proceeding  so directed. The Company is
required  to  file  with  the  Bond Trustee, on or before July 1 of each year, a
certificate  to the effect that, except as otherwise stated therein, the Company
has  complied  with  all  of  the  provisions of the Mortgage and is not then in
default thereunder.

Modification of the Mortgage

     The  Mortgage  and  the  rights  of  bondholders  may  be modified with the
consent  of  the  Company,  and  of the Bond Trustee if deemed affected, and the
vote  or  assent  of the holders of not less than 70% in principal amount of the
Eligible  bonds,  and  of  not less than 70% in principal amount of the Eligible
bonds  of  any  one  or  more  series  (less  than  all)  affected  by  any such
modification;  except that the bondholders, without the consent of the holder of
each  bond  affected,  have no power to (a) reduce the principal thereof, or the
premium,  if  any,  or rate of interest thereon or otherwise modify the terms of
payment  of  principal,  premium,  or  interest,  or  extend the maturity of any
bonds,  (b) permit the creation of any lien ranking prior to or on a parity with
the  lien  of  the  Mortgage  with respect to any of the mortgaged property, (c)
deprive  any  nonassenting  bondholder of a lien upon the mortgaged property for
the  security  of  his or her bonds, or (d) reduce the percentage of bondholders
authorized to effect any such modification.

Global Securities

     Some  or all of the New Bonds of any series may be represented, in whole or
in  part,  by  one  or  more  "Global  Securities"  which will have an aggregate
principal  amount  equal  to  that  of  the  New Bonds represented thereby. Each
Global  Security  will  be  registered  in the name of a depositary or a nominee
thereof  identified  in  the applicable Prospectus Supplement, will be deposited
with  such  depositary or nominee or a custodian therefor and will bear a legend
regarding  the  restrictions  on  exchanges and registration of transfer thereof
referred  to below and any such other matters as may be provided for pursuant to
the applicable Bond Supplemental Indenture.

     Notwithstanding  any  provision  of  the Mortgage or any New Bond described
herein,  no  Global  Security may be exchanged in whole or in part for New Bonds
registered,  and  no  transfer  of  a Global Security in whole or in part may be
registered, in the name of any person other than the depositary for
                                       7
<PAGE>
such  Global  Security  or  any  nominee  of  such  depositary  unless  (i)  the
depositary  has  notified the Company that it is unwilling or unable to continue
as  depositary  for such Global Security or has ceased to be qualified to act as
such  as  required  by  the  Mortgage,  (ii)  there  shall  have occurred and be
continuing  a  default  with respect to the New Bonds represented by such Global
Security,  or (iii) there shall exist such circumstances, if any, in addition to
or  in  lieu of those described above as may be described in the applicable Bond
Supplemental  Indenture  and  Prospectus  Supplement.  All  securities issued in
exchange  for  a  Global  Security  or any portion thereof will be registered in
such names as the depositary may direct.

     As  long  as  the depositary, or its nominee, is the registered holder of a
Global  Security,  the  depositary  or such nominee, as the case may be, will be
considered  the  sole owner and holder of such Global Security and the New Bonds
represented  thereby  for  all  purposes  under  the New Bonds and the Mortgage.
Except  in  the  limited  circumstances  referred to above, owners of beneficial
interests  in  a  Global  Security  will  not  be  entitled  to have such Global
Security  or  any  New Bonds represented thereby registered in their names, will
not  receive  or  be  entitled  to receive physical delivery of certificated New
Bonds  in  exchange  therefor  and  will  not  be considered to be the owners or
holders  of  such  Global  Security or any New Bonds represented thereby for any
purpose  under  the  New Bonds or the Mortgage. All payments of principal of and
any  premium and interest on a Global Security will be made to the depositary or
its  nominee,  as  the  case  may  be,  as  the holder thereof. The laws of some
jurisdictions  require  that  certain  purchasers  of  securities  take physical
delivery  of  such  securities  in  definitive  form.  These laws may impair the
ability to transfer beneficial interests in a Global Security.

     Ownership  of  beneficial interests in a Global Security will be limited to
institutions   that   have   accounts   with   the  depositary  or  its  nominee
("participants")  and  to  persons  that  may  hold beneficial interests through
participants.  In  connection  with  the  issuance  of  any Global Security, the
depositary  will credit, on its book-entry registration and transfer system, the
respective  principal amounts of New Bonds represented by the Global Security to
the  accounts of its participants. Ownership of beneficial interests in a Global
Security  will  be  shown only on, and the transfer of those ownership interests
will  be  effected  only  through,  records  maintained  by the depositary (with
respect  to  participants'  interests)  or any such participant (with respect to
interests  of  persons  held  by  such  participants on their behalf). Payments,
transfers,  exchanges,  and  other matters relating to beneficial interests in a
Global  Security  may  be  subject to various policies and procedures adopted by
the  depositary  from time to time. None of the Company, the Bond Trustee or any
agent  of  the  Company  or  the  Bond  Trustee  will have any responsibility or
liability  for  any  aspect  of  the  depositary's  or any participant's records
relating  to,  or  for  payments  made  on account of, beneficial interests in a
Global  Security,  or  for  maintaining,  supervising,  or reviewing any records
relating to such beneficial interests.

Other

     The  Mortgage  restricts  the  payment  of dividends on common stock of the
Company  under  certain conditions which have not existed in the past and do not
currently exist.

     The  Bond  Trustee, security registrar, and paying agent under the Mortgage
is  The Bank of New York. The Company maintains normal banking arrangements with
The  Bank  of  New  York,  which  include  (i)  one  commitment in the aggregate
principal  amount  of  approximately  $15.7  million  by  The  Bank  of New York
pursuant  to  a  reimbursement agreement related to a letter of credit issued on
behalf of the Company in connection with an issuance of pollution control bonds,
the  proceeds  of  which  were  made  available  to  the Company, and (ii) a $25
million  commitment  by  The  Bank  of  New  York pursuant to a revolving credit
agreement,  approximately  $7.8  million  of  which was outstanding at March 31,
1998.  The  Bank  of  New  York  also  serves  as (i) trustee for the holders of
several  issues of pollution control bonds issued on behalf of the Company, (ii)
trustee  under  the  Indenture relating to the subordinated Debt Securities (see
"Description  of  Debt  Securities"  below), (iii) trustee under the Senior Note
Indenture  (as  defined  below),  (iv)  investment  manager  for  the  Company's
nonunion  post-retirement  medical  fund,  and  (v)  custodian  of international
fixed-income assets for the Company's pension plan.
                                       8
<PAGE>
                          DESCRIPTION OF SENIOR NOTES

General

     The  Senior  Notes  may  be  issued  in  one  or  more  new series under an
Indenture  (the "Senior Note Indenture") between the Company and The Bank of New
York,  or any other trustee to be named, as Trustee (the "Senior Note Trustee").
The  following  summary  does  not  purport to be complete and is subject in all
respects  to  the  provisions  of, and is qualified in its entirety by reference
to,  the  Senior  Note  Indenture  pursuant  to which the Senior Notes are to be
issued  and to the Senior Notes, the forms of which are filed, or will be filed,
as  exhibits  to  the  registration  statement  of which this Prospectus forms a
part.  Whenever  particular  provisions  or  defined  terms  in  the Senior Note
Indenture  are referred to herein or in a Prospectus Supplement, such provisions
or terms are incorporated by reference herein or therein, as the case may be.

     Until  the  Release  Date  (as  defined  below),  the  Senior Notes will be
secured  by  one  or  more  series  of  New Bonds ("Senior Note Mortgage Bonds")
issued   and   delivered  by  the  Company  to  the  Senior  Note  Trustee.  See
"Description  of  Senior  Notes -- Security" and "Description of Senior Notes --
Release  Date."  On  the Release Date, the Senior Notes will cease to be secured
by  Senior  Note  Mortgage  Bonds,  will  become  unsecured  obligations  of the
Company,  and  will rank on a parity with other unsecured senior indebtedness of
the  Company,  including  senior  Debt  Securities.  The  Senior  Note Indenture
provides  that,  in  addition  to  the  Senior  Notes offered hereby, additional
senior  notes  may  be  issued  thereunder,  without  limitation as to aggregate
principal  amount,  provided  that,  prior  to  the  Release Date, the amount of
senior  notes  that  may  be  issued  cannot exceed the amount of first mortgage
bonds  that the Company is able to issue under its Mortgage. See "Description of
New Bonds -- Issuance of Additional Bonds."

     Reference  is  made to the Prospectus Supplement relating to any particular
issue  of  Offered  Senior  Notes for the following terms: (1) the title of such
Senior  Notes;  (2)  any  limit on the aggregate principal amount of such Senior
Notes  or  the  series  of which they are a part; (3) the date or dates on which
the  principal  of  any  of  such  Senior Notes will be payable; (4) the rate or
rates  at which any of such Senior Notes will bear interest, if any, the date or
dates  from  which  any such interest will accrue, the Interest Payment Dates on
which  any  such  interest  will  be payable and the Regular Record Date for any
such  interest  payable  on  any  Interest Payment Date; (5) the place or places
where  the principal of and any premium and interest on any of such Senior Notes
will  be  payable, if other than as described under "Description of Senior Notes
- --  Payment  and  Paying  Agents";  (6)  the period or periods within which, the
price  or  prices  at  which  and  the terms and conditions on which any of such
Senior  Notes  may  be  redeemed,  in  whole  or  in  part, at the option of the
Company;  (7)  the  obligation, if any, of the Company to redeem or purchase any
of  such  Senior Notes pursuant to any sinking fund or analogous provision or at
the  option  of  the Holder thereof, and the period or periods within which, the
price  or  prices  at  which  and  the terms and conditions on which any of such
Senior  Notes  will  be  redeemed or purchased, in whole or in part, pursuant to
any  such  obligation;  (8)  the denominations in which any of such Senior Notes
will  be  issuable,  if  other  than  denominations  of  $1,000 and any integral
multiple  thereof;  (9) if the amount of principal of or any premium or interest
on  any  of  such  Senior  Notes may be determined with reference to an index or
pursuant  to  a  formula,  the  manner in which such amounts will be determined;
(10)  if  other than the currency of the United States of America, the currency,
currencies,  or  currency  units  in  which  the  principal of or any premium or
interest  on  any  of  such  Senior  Notes  will  be  payable  and the manner of
determining  the  equivalent  thereof  in  the  currency of the United States of
America  for  any  purpose,  including for purposes of determining the principal
amount  deemed  to  be  Outstanding at any time; (11) if the principal of or any
premium  or  interest  on  any  of  such  Senior  Notes is to be payable, at the
election  of  the  Company  or the Holder thereof, in one or more currencies, or
currency  units  other  than  those  in which such Senior Notes are stated to be
payable,  the  currency,  currencies  or  currency units in which payment of any
such  amount  as  to  which  such  election is made will be payable, the periods
within  which  and  the  terms  and conditions upon which such election is to be
made  and  the  amount  so  payable (or the manner in which such amount is to be
determined);  (12)  if  other  than  the  entire  principal  amount thereof, the
portion  of  the  principal  amount  of  any  of such Senior Notes which will be
payable  upon  declaration  of acceleration of the Maturity thereof; (13) if the
principal  amount  payable  at  the  Stated Maturity of any of such Senior Notes
will not be determinable as of any one or more dates prior to the
                                       9
<PAGE>
Stated  Maturity, the amount which will be deemed to be such principal amount as
of  any  such date for any purpose, including the principal amount thereof which
will  be  due  and  payable  upon any Maturity other than the Stated Maturity or
which  will  be  deemed  to  be Outstanding as of any such date (or, in any such
case,  the  manner  in  which such deemed principal amount is to be determined);
(14)  if applicable, that such Senior Notes, in whole or any specified part, are
defeasible  pursuant  to  the  provisions of the Senior Note Indenture described
under  "Description of Senior Notes -- Defeasance and Covenant Defeasance"; (15)
whether  any  of  such  Senior Notes will be issuable in whole or in part in the
form  of  one  or more Global Securities and, if so, the respective Depositaries
for  such  Global  Securities,  the form of any legend or legends to be borne by
any  such  Global  Security  in addition to or in lieu of the legend referred to
under  "Description of Senior Notes -- Global Securities" and, if different from
those  described  under  such  caption,  any  circumstances under which any such
Global  Security  may  be  exchanged  in  whole  or  in  part  for  Senior Notes
registered,  and any transfer of such Global Security in whole or in part may be
registered,  in  the  names of Persons other than the Depositary for such Global
Security  or  its  nominee;  (16)  if  any of such Senior Notes are to be issued
prior  to  the  Release  Date,  the  designation  of  the  series of Senior Note
Mortgage  Bonds  to be delivered to the Senior Note Trustee as security for such
Senior  Notes;  (17)  any  addition  to  or  change  in  the  Events  of Default
applicable  to  any  of  such  Senior  Notes  and any change in the right of the
Trustee  or  the  Holders  to declare the principal amount of any of such Senior
Notes  due  and  payable; (18) any addition to or change in the covenants in the
Senior  Note  Indenture;  and  (19)  any  other  terms  of such Senior Notes not
inconsistent with the provisions of the Senior Note Indenture. (Section 301).

     Senior  Notes,  including  Original  Issue Discount Notes, may be sold at a
substantial  discount  below  their  principal  amount.  Certain  special United
States  federal  income  tax  considerations (if any) applicable to Senior Notes
sold  at  an  original  issue  discount  may  be  described  in  the  applicable
Prospectus  Supplement.  In  addition,  certain  special  United  States federal
income  tax  or  other  considerations  (if  any) applicable to any Senior Notes
which  are  denominated  in a currency or currency unit other than United States
dollars may be described in the applicable Prospectus Supplement.

     Except  as  otherwise described in the Prospectus Supplement, the covenants
contained  in the Senior Note Indenture would not afford holders of Senior Notes
protection in the event of a highly-leveraged    transaction    involving    the
Company.

Form, Exchange, and Transfer

     The  Senior  Notes of each series will be issuable only in fully registered
form   without  coupons  and,  unless  otherwise  specified  in  the  applicable
Prospectus  Supplement,  in  denominations  of  $1,000 and any integral multiple
thereof. (Section 302).

     At  the  option  of  the  Holder,  subject  to the terms of the Senior Note
Indenture  and  the limitations applicable to Global Securities, Senior Notes of
any  series  will  be exchangeable for other Senior Notes of the same series, of
any  authorized  denomination  and of like tenor and aggregate principal amount.
(Section 305).

     Subject  to  the  terms  of  the  Senior Note Indenture and the limitations
applicable  to  Global Securities, Senior Notes may be presented for exchange as
provided  above  or for registration of transfer (duly endorsed or with the form
of  transfer endorsed thereon duly executed) at the office of the Note Registrar
or  at  the  office  of  any  transfer  agent designated by the Company for such
purpose.  No  service  charge  will  be made for any registration of transfer or
exchange  of  Senior  Notes,  but  the  Company  may  require  payment  of a sum
sufficient  to  cover any tax or other governmental charge payable in connection
therewith.  Such  transfer  or exchange will be effected upon the Note Registrar
or  such  transfer agent, as the case may be, being satisfied with the documents
of  title  and  identity  of  the  person  making  the  request. The Company has
appointed  the  Senior  Note  Trustee  as Note Registrar. Any transfer agent (in
addition  to  the  Note  Registrar)  initially designated by the Company for any
Senior  Notes  will  be  named in the applicable Prospectus Supplement. (Section
305).  The  Company  may  at  any  time  designate additional transfer agents or
rescind  the designation of any transfer agent or approve a change in the office
through  which any transfer agent acts, except that the Company will be required
to  maintain  a  transfer agent in each Place of Payment for the Senior Notes of
each series. (Section 1102).
                                       10
<PAGE>
     If  the  Senior  Notes of any series (or of any series and specified tenor)
are  to be redeemed, the Company will not be required to (i) issue, register the
transfer  of,  or exchange any Senior Note of that series (or of that series and
specified  tenor,  as  the case may be) during a period beginning at the opening
of  business  15 days before the day of mailing of a notice of redemption of any
such  Senior Note that may be selected for redemption and ending at the close of
business  on  the  day  of  such  mailing  or  (ii)  register the transfer of or
exchange  any  Senior  Note  so  selected  for  redemption, in whole or in part,
except  the  unredeemed  portion of any such Senior Note being redeemed in part.
(Section 305).

Global Notes

     Some  or all of the Senior Notes of any series may be represented, in whole
or  in  part, by one or more Global Notes which will have an aggregate principal
amount  equal  to that of the Senior Notes represented thereby. Each Global Note
will  be  registered in the name of a Depositary or a nominee thereof identified
in  the applicable Prospectus Supplement, will be deposited with such Depositary
or  nominee  or  a  custodian  therefor  and  will  bear  a legend regarding the
restrictions  on  exchanges  and  registration  of  transfer thereof referred to
below  and  any such other matters as may be provided for pursuant to the Senior
Note Indenture.

     Notwithstanding  any  provision  of the Senior Note Indenture or any Senior
Note  described  herein, no Global Note may be exchanged in whole or in part for
Senior  Notes  registered,  and no transfer of a Global Note in whole or in part
may  be registered, in the name of any Person other than the Depositary for such
Global  Note  or  any  nominee  of such Depositary unless (i) the Depositary has
notified  the  Company  that it is unwilling or unable to continue as Depositary
for  such  Global  Note or has ceased to be qualified to act as such as required
by  the  Senior Note Indenture, (ii) there shall have occurred and be continuing
an  Event of Default with respect to the Senior Notes represented by such Global
Note,  or  (iii) there shall exist such circumstances, if any, in addition to or
in  lieu  of  those  described  above  as  may  be  described  in the applicable
Prospectus  Supplement.  All  securities issued in exchange for a Global Note or
any  portion  thereof  will  be  registered  in such names as the Depositary may
direct. (Sections 204 and 305).

     As  long  as  the Depositary, or its nominee, is the registered Holder of a
Global  Note,  the  Depositary  or  such  nominee,  as  the case may be, will be
considered  the  sole  owner and Holder of such Global Note and the Senior Notes
represented  thereby for all purposes under the Senior Notes and the Senior Note
Indenture.  Except  in  the  limited  circumstances referred to above, owners of
beneficial  interests  in a Global Note will not be entitled to have such Global
Note  or  any  Senior  Notes represented thereby registered in their names, will
not  receive  or be entitled to receive physical delivery of certificated Senior
Notes  in  exchange  therefor  and  will  not  be considered to be the owners or
Holders  of  such  Global  Note  or any Senior Notes represented thereby for any
purpose  under  the  Senior  Notes or the Senior Note Indenture. All payments of
principal  of  and any premium and interest on a Global Note will be made to the
Depositary  or  its nominee, as the case may be, as the Holder thereof. The laws
of  some  jurisdictions  require  that  certain  purchasers  of  securities take
physical  delivery  of such securities in definitive form. These laws may impair
the ability to transfer beneficial interests in a Global Note.

     Ownership  of  beneficial  interests  in  a  Global Note will be limited to
institutions   that   have   accounts   with   the  Depositary  or  its  nominee
("participants")  and  to  persons  that  may  hold beneficial interests through
participants.   In  connection  with  the  issuance  of  any  Global  Note,  the
Depositary  will credit, on its book-entry registration and transfer system, the
respective  principal  amounts of Senior Notes represented by the Global Note to
the  accounts of its participants. Ownership of beneficial interests in a Global
Note  will  be shown only on, and the transfer of those ownership interests will
be  effected only through, records maintained by the Depositary (with respect to
participants'  interests)  or any such participant (with respect to interests of
persons  held  by  such  participants  on  their  behalf).  Payments, transfers,
exchanges,  and others matters relating to beneficial interests in a Global Note
may  be  subject  to  various  policies and procedures adopted by the Depositary
from  time to time. None of the Company, the Senior Note Trustee or any agent of
the  Company  or  the  Senior  Note  Trustee  will  have  any  responsibility or
liability  for  any  aspect  of  the  Depositary's  or any participant's records
relating  to,  or  for  payments  made  on account of, beneficial interests in a
Global  Note, or for maintaining, supervising, or reviewing any records relating
to such beneficial interests.
                                       11
<PAGE>
Payment and Paying Agents

     Unless   otherwise  indicated  in  the  applicable  Prospectus  Supplement,
payment  of  interest on a Senior Note on any Interest Payment Date will be made
to  the Person in whose name such Senior Note (or one or more Predecessor Senior
Notes)  is  registered  at  the close of business on the Regular Record Date for
such interest. (Section 307).

     Unless   otherwise  indicated  in  the  applicable  Prospectus  Supplement,
principal  of  and  any premium and interest on the Senior Notes of a particular
series  will  be  payable at the office of such Paying Agent or Paying Agents as
the  Company  may  designate  for such purpose from time to time, except that at
the  option  of  the Company payment of any interest may be made by check mailed
to  the  address  of  the Person entitled thereto as such address appears in the
Note   Register.   Unless  otherwise  indicated  in  the  applicable  Prospectus
Supplement,  the  corporate  trust office of the Senior Note Trustee in The City
of  New  York will be designated as the Company's sole Paying Agent for payments
with  respect  to Senior Notes of each series. Any other Paying Agents initially
designated  by  the  Company for the Senior Notes of a particular series will be
named  in  the  applicable  Prospectus  Supplement.  The Company may at any time
designate  additional  Paying  Agents  or  rescind the designation of any Paying
Agent  or  approve  a  change in the office through which any Paying Agent acts,
except  that  the  Company  will  be required to maintain a Paying Agent in each
Place of Payment for the Senior Notes of a particular series. (Section 1102).

     All  moneys  paid  by  the Company to a Paying Agent for the payment of the
principal  of  or  any  premium  or  interest  on  any Senior Notes which remain
unclaimed  at the end of two years after such principal, premium or interest has
become  due  and  payable  will be repaid to the Company, and the Holder of such
Senior  Notes  thereafter  may  look  only  to  the Company for payment thereof.
(Section 1103).

Consolidation, Merger, and Sale of Assets

     The  Company  may  not  consolidate  with or merge into any other Person or
convey,  transfer  or  lease  its  properties  and  assets  "substantially as an
entirety"  to  any  Person, and may not permit any Person to consolidate with or
merge  into  the Company or convey, transfer, or lease its properties and assets
substantially  as  an  entirety  to the Company, unless (a) the successor Person
(if  any)  is  a  corporation,  partnership, trust or other entity organized and
validly  existing  under  the  laws of any domestic jurisdiction and (i) assumes
the  Company's  obligations  on  the  Senior  Notes  and  under  the Senior Note
Indenture,  and  (ii)  if  such  consolidation, merger, conveyance, transfer, or
lease  occurs prior to the Release Date, assumes the Company's obligations under
the  Senior  Note  Mortgage  Bonds and under the Mortgage; (b) immediately after
giving  effect  to  the  transaction,  no  Event of Default, and no event which,
after  notice  or lapse of time or both, would become an Event of Default, shall
have  occurred and be continuing and (iii) certain other conditions are met. The
term  "substantially  as  an  entirety" means 50% or more of the total assets of
the  Company  as shown on the Company's consolidated balance sheet as of the end
of  the  calendar  year  immediately preceding the day of the year in which such
determination is made. (Section 901).

Security

     Until  the  Release  Date (see "Release Date" below), the Senior Notes will
be  secured  by  one  or more series of New Bonds ("Senior Note Mortgage Bonds")
issued   and   delivered  by  the  Company  to  the  Senior  Note  Trustee  (see
"Description  of  New  Bonds").  Upon  the  issuance of a series of Senior Notes
prior  to the Release Date, the Company will simultaneously issue and deliver to
the  Senior  Note Trustee, as security for such series of Senior Notes, a series
of  Senior  Note  Mortgage Bonds that will have the same stated rate or rates of
interest  (or  interest  calculated in the same manner), Interest Payment Dates,
Stated  Maturity  and  redemption  provisions, and will be in the same aggregate
principal  amount  as  the  series  of  the Senior Notes being issued. (Sections
401-403).  Payments  by  the Company to the Senior Note Trustee of principal of,
premium  and  interest  on,  a series of Senior Notes will satisfy the Company's
obligations  with  respect to principal of, premium and interest on, the related
series of Senior Note Mortgage Bonds.
                                       12
<PAGE>
     Each  series  of  Senior Note Mortgage Bonds will be a series of New Bonds,
all  of  which  are  secured by a lien on certain property owned by the Company.
See  "Description  of  New Bonds -- Security." In certain circumstances prior to
the  Release  Date,  the  Company is permitted to reduce the aggregate principal
amount  of  a  series  of  Senior  Note  Mortgage  Bonds held by the Senior Note
Trustee,  but  in  no  event  to  an amount lower than the aggregate outstanding
principal   amount   of   the   series   of   Senior   Notes   initially  issued
contemporaneously   with   such  Senior  Note  Mortgage  Bonds.  (Section  409).
Following  the  Release  Date,  the Company will cause the Mortgage to be closed
and  the  Company  will  not issue any additional first mortgage bonds under the
Mortgage. (Section 403).

Release Date

     ON  THE  RELEASE DATE, THE SENIOR NOTE MORTGAGE BONDS WILL NO LONGER SECURE
THE   SENIOR   NOTES,  AND  THE  SENIOR  NOTES  WILL  BECOME  UNSECURED  GENERAL
OBLIGATIONS  OF  THE  COMPANY.  (Section 407). The "Release Date" means the date
that  the  Company  has  repaid  all of its first mortgage bonds, other than the
first  mortgage  bonds  securing  the  senior notes.The Senior Note Trustee will
give  the  Senior Note Holders notice of the occurrence of the Release Date. See
"Description   of   Senior  Notes  --  Defeasance  and  Covenant  Defeasance  --
Defeasance  and  Discharge"  for  a  discussion  of  another  situation in which
outstanding Senior Notes would not be secured by Senior Note Mortgage Bonds.

     Unless  otherwise  specified  in the applicable Prospectus Supplement, from
and  after  the  Release Date and so long as Senior Notes of a particular series
are  outstanding,  the  Company  may  not  issue,  assume  or guarantee any debt
evidenced  by  notes,  debentures,  bonds or other securities for money borrowed
that  is  secured  by any mortgage, security interest, pledge or lien of or upon
any  operating  property  of  the Company, and will not permit to exist any such
debt  secured  by any such lien created on or prior to the Release Date, without
effectively  securing  such  Senior Notes equally and ratably therewith, subject
to  certain  exceptions  as  described below. See "Limitations on Liens and Sale
and Lease-back  Transactions."  The intention of these provisions is that before
the  Release  Date  the  Senior  Notes will have the benefit of being secured by
Senior  Note  Mortgage  Bonds,  and after the Release Date the Senior Notes will
have  the  benefit of the same security as other secured debt of the Company, if
any, subject to specified exceptions.

Limitations on Liens and Sale and Lease-Back Transactions

     Limitations  on  Liens.   Unless  otherwise  specified  in  the  applicable
Prospectus  Supplement,  from  and  after the Release Date and so long as Senior
Notes  of  a  particular  series  are  outstanding,  the  Company may not issue,
assume,  or  guarantee  any debt evidenced by notes, debentures, bonds, or other
securities  for  money  borrowed  ("Debt")  that  is  secured  by  any mortgage,
security  interest,  pledge,  or lien ("lien") of or upon any Operating Property
of  the  Company, and will not permit to exist any such Debt secured by any such
mortgage  created  on or prior to the Release Date, without effectively securing
such  Senior Notes equally and ratably with such Debt. This restriction does not
apply  to (1) liens on any property existing at the time of its acquisition; (2)
liens  on  property  of  a  corporation  existing at the time the corporation is
merged  into  or  consolidated  with,  or  disposes  of substantially all of its
properties  (or  those  of  a  division) to, the Company; (3) subject to certain
conditions,  liens  securing  Debt  incurred  to acquire, construct, develop, or
substantially  repair,  alter,  or  improve property or to reimburse the Company
for  funds  spent  for any such purpose; (4) liens in favor of the United States
of  America  or  any  State thereof, or for the benefit of holders of securities
issued  by  any  such  entity,  or any department, agency, or instrumentality or
political  subdivision  of the United States of America or any State thereof, to
secure  any  Debt  incurred  for the purpose of financing all or any part of the
purchase  price  or  the  cost  of  constructing,  developing  or  substantially
repairing,  altering,  or  improving  the property subject to such liens; or (5)
any  extension,  renewal,  or  replacement,  in  whole  or  in part, of any lien
referred  to in clauses (1) through (4). However, the foregoing restriction does
not  apply  to  the  issuance,  assumption,  or guarantee by the Company of Debt
secured   by   a  lien  which  would  otherwise  be  subject  to  the  foregoing
restrictions  up  to  an aggregate amount which, together with all other secured
Debt  of  the  Company (not including secured Debt permitted under the foregoing
exceptions) and the Value (as defined below) of
                                       13
<PAGE>
all  Sale  and  Lease-Back Transactions (as defined below) existing at such time
(other  than Sale and Lease-Back Transaction proceeds which have been applied to
the  retirement  or  certain  indebtedness,  Sale and Lease-Back Transactions in
which  the property involved would have been permitted to be mortgaged under the
foregoing  exceptions and Sale and Lease-Back Transactions that are permitted by
the  first  sentence  of  "--  Limitations  on Sale and Lease-Back Transactions"
below),  does  not  exceed the greater of 10% of Net Tangible Assets (as defined
below) or 10% of Capitalization (as defined below).

     Limitations   on   Sale   and   Lease-Back  Transactions. Unless  otherwise
specified  in  the  applicable Prospectus Supplement, after the Release Date, so
long  as  any  Senior  Notes are outstanding, the Company may not enter into any
Sale  and Lease-Back Transaction with respect to any Operating Property and will
not  permit to remain in effect any Sale and Lease-Back transaction with respect
to  any  Operating Property entered into on or prior to the Release Date (except
in  each  case,  for  transactions  involving  leases  for a term, including any
renewal  thereof,  of not more than 48 months), if the purchaser's commitment is
or  was  obtained  more  than 18 months after the later of the completion of the
acquisition,  construction  or  development  or the placing in operation of such
Operating   Property  or  of  such  Operating  Property  as  constructed,  being
developed  or substantially repaired, altered or improved. This restriction will
not  apply  if  (a)  the  Company  would  be entitled pursuant to the provisions
described  in  the  second  sentence  under  "--  Limitations on Liens" above to
issue,  assume  or  guarantee  Debt secured by a lien on such Operating Property
without  equally and ratably securing such Senior Notes, (b) after giving effect
to  such  Sale  and  Lease-Back Transaction, the Company could incur pursuant to
the  provisions  described in the third sentence under "-- Limitation on Liens,"
additional  debt secured by liens, or (c) the Company applies within 180 days an
amount  equal  to,  in the case of a sale or transfer for cash, the net proceeds
(not  exceeding the net book value), and, otherwise, an amount equal to the fair
value  (as  determined  by  its Board of Directors) of the Operating Property so
leased  to  the  retirement of Senior Notes or other Debt of the Company ranking
senior  to, or equally with, the Senior Notes, subject to reduction as set forth
in  the  Supplemental Indenture in respect of Senior Notes and such Debt retired
during  such 180-day period otherwise than pursuant to mandatory sinking fund or
prepayment provisions and payments at Stated Maturity.

     Definitions. The  term  "Capitalization"  shall  mean  the total of all the
following  items appearing on, or included in, the balance sheet of the Company:
(i)  liabilities  for indebtedness maturing more than 12 months from the date of
determination;  and  (ii)  common  stock,  preferred  stock,  premium on capital
stock,  capital  surplus, capital in excess of par value, and retained earnings,
less,  to the extent not otherwise deducted, the cost of shares of capital stock
of the Company held in its treasury.

     The  term "Net Tangible Assets" shall mean the amount shown as total assets
on  the  consolidated  balance  sheet  of  the  Company, less the following: (i)
intangible  assets  including,  but  without limitation, such items as goodwill,
trademarks,  tradenames,  patents  and unamortized debt discount and expense and
other  regulatory  assets  carried  as  an asset on said balance sheet; and (ii)
appropriate adjustments, if any, on account of minority interests.

     The  term "Operating Property" shall mean (i) any interest in real property
owned  by  the  Company  and  (ii)  any  asset  owned  by  the  Company  that is
depreciable in accordance with generally accepted accounting principles.

     The  term "Sale and Lease-Back Transaction" shall mean any arrangement with
any  person  providing  for the leasing to the Company of any Operating Property
(except  for  leases for a term, including any renewal thereof, of not more than
48  months),  which  Operating Property has been or is to be sold or transferred
by the Company to such person.

     The  term  "Value"  shall  mean,  with  respect  to  a  Sale and Lease-Back
Transaction,  as  of any particular time, the amount equal to the greater of (i)
the  net  proceeds  to  the  Company  from  the sale or transfer of the property
leased  pursuant  to  such  Sale and Lease-Back Transaction or (ii) the net book
value  of  such  property,  as  determined in accordance with generally accepted
accounting  principles by the Company at the time of entering into such Sale and
Lease-Back  Transaction, in each case multiplied by a fraction, the numerator of
which  shall  be equal to the number of full years of the term of the lease that
is  part  of  such  Sale  and  Lease-Back  Transaction  remaining at the time of
determination and the
                                       14
<PAGE>
denominator  of  which  shall be equal to the number of full years of such term,
without  regard,  in  any case, to any renewal or extension options contained in
such lease.

Events of Default

     Each  of the following will constitute an Event of Default under the Senior
Note  Indenture  with  respect to Senior Notes of any series: (a) failure to pay
principal  of  or  any  premium  on  any  Senior  Note  of that series when due,
continued  for five days; (b) failure to pay any interest on any Senior Notes of
that  series  when  due,  continued  for  sixty days; (c) failure to deposit any
sinking  fund  payment,  when due, in respect of any Senior Note of that series;
(d)  failure  to  perform  any  other covenant of the Company in the Senior Note
Indenture  (other  than  a covenant included in the Senior Note Indenture solely
for  the  benefit  of  a  series  other than that series), continued for 90 days
after  written  notice has been given by the Senior Note Trustee, or the Holders
of  a  majority  in  principal  amount  of  the Outstanding Senior Notes of that
series,  as  provided  in  the  Senior  Note Indenture; (e) prior to the Release
Date,  the  occurrence  of a Default under the Mortgage (see "Description of the
Bonds  --  Events  of  Default"),  of  which the Trustee under the Mortgage, the
Company  or  the  Holders  of  at least 25% in aggregate principal amount of the
outstanding  senior  notes  have given written notice thereof to the Senior Note
Trustee;  and  (f)  certain  events in bankruptcy, insolvency or reorganization.
(Section 601).

     If  an Event of Default (other than an Event of Default described in clause
(f)  above)  with  respect  to  the  Senior  Notes  of  any  series  at the time
Outstanding  shall  occur  and  be continuing, either the Senior Note Trustee or
the  Holders  of  a majority in principal amount of the Outstanding Senior Notes
of  that  series  by notice as provided in the Senior Note Indenture may declare
the  principal amount of the Senior Notes of that series (or, in the case of any
Senior  Note  that is an Original Issue Discount Note or the principal amount of
which  is  not  then  determinable, such portion of the principal amount of such
Senior  Note,  or  such other amount in lieu of such principal amount, as may be
specified  in  the terms of such Senior Note) to be due and payable immediately.
If  an Event of Default described in clause (f) above with respect to the Senior
Notes  of  any  series at the time Outstanding shall occur, the principal amount
of  all  the  Senior  Notes of that series (or, in the case of any such Original
Issue   Discount  Note  or  other  Senior  Note,  such  specified  amount)  will
automatically,  and without any action by the Senior Note Trustee or any Holder,
become  immediately due and payable. After any such acceleration, but before (i)
a  judgment  or  decree  based on acceleration or (ii) the Senior Note Trustee's
receipt  from  the  Trustee  under  the  Mortgage of a notice of acceleration of
Senior  Note  First  Mortgage  Bonds,  such  acceleration  will be automatically
waived  and  rescinded  if  all Events of Default, other than the non-payment of
accelerated  principal (or other specified amount), have been cured or waived as
provided  in  the  Indenture.  (Section  602).  For  information as to waiver of
defaults, see "Modification and Waiver."

     Subject  to  the  provisions  of  the Senior Note Indenture relating to the
duties  of  the  Senior Note Trustee in case an Event of Default shall occur and
be  continuing,  the Senior Note Trustee will be under no obligation to exercise
any  of  its  rights or powers under the Senior Note Indenture at the request or
direction  of  any of the Holders, unless such Holders shall have offered to the
Senior  Note  Trustee  reasonable  indemnity.  (Section  703).  Subject  to such
provisions  for the indemnification of the Senior Note Trustee, the Holders of a
majority  in principal amount of the Outstanding Senior Notes of any series will
have  the  right  to  direct  the  time,  method  and  place  of  conducting any
proceeding  for  any  remedy available to the Senior Note Trustee, or exercising
any  trust  or  power  conferred on the Senior Note Trustee, with respect to the
Senior Notes of that series. (Section 612).

     No  Holder  of a Senior Note of any series will have any right to institute
any   proceeding  with  respect  to  the  Senior  Note  Indenture,  or  for  the
appointment  of  a  receiver  or  a trustee, or for any other remedy thereunder,
unless  (i)  such Holder has previously given to the Senior Note Trustee written
notice  of  a  continuing  Event  of Default with respect to the Senior Notes of
that  series,  (ii) the Holders of at least 25% in aggregate principal amount of
the  Outstanding Senior Notes of that series have made written request, and such
Holder  or Holders have offered reasonable indemnity, to the Senior Note Trustee
to  institute  such proceeding as trustee, and (iii) the Senior Note Trustee has
failed  to institute such proceeding, and has not received from the Holders of a
majority  in  aggregate principal amount of the Outstanding Senior Notes of that
series  a  direction  inconsistent  with such request, within 60 days after such
notice, request
                                       15
<PAGE>
and  offer.  (Section  607).  However,  such  limitations do not apply to a suit
instituted  by  a  Holder of a Senior Note for the enforcement of payment of the
principal  of  or  any  premium  or interest on such Senior Note on or after the
applicable due date specified in such Senior Note. (Section 608).

     The  Company  will  be  required  to  furnish  to  the  Trustee  annually a
statement  by certain of its officers as to whether or not the Company, to their
knowledge,  is  in default in the performance or observance of any of the terms,
provisions  and  conditions  of  the  Indenture  and, if so, specifying all such
known defaults. (Section 1104).

Modification and Waiver

     Modifications  and  amendments  of the Senior Note Indenture may be made by
the  Company  and  the  Senior Note Trustee with the consent of the Holders of a
majority  in  principal  amount  of  the Outstanding Senior Notes of each series
affected  by  such  modification  or  amendment; provided, however, that no such
modification  or  amendment  may,  without  the  consent  of  the Holder of each
Outstanding  Senior Note affected thereby, (a) change the Stated Maturity of the
principal  of,  or  any  instalment  of  principal of or interest on, any Senior
Note,  (b)  reduce  the  principal amount of, or any premium or interest on, any
Senior  Note,  (c)  reduce the amount of principal of an Original Issue Discount
Note  or  any  other  Senior  Note  payable  upon  acceleration  of the Maturity
thereof,  (d)  change  the  place or currency of payment of principal of, or any
premium  or interest on, any Senior Note, (e) impair the right to institute suit
for  the  enforcement  of any payment on or with respect to any Senior Note, (f)
prior  to  the  Release Date, (i) impair the interest of the Senior Note Trustee
in  the  Senior  Note  Mortgage  Bonds,  (ii) reduce the principal amount of any
series  of  Senior  Note  Mortgage  Bonds  to  an amount less than the principal
amount  of the related Series of Notes, or (iii) alter the payment provisions of
the  Senior Note Mortgage Bonds in a manner adverse to the Holders of the Notes,
or  (g) reduce the percentage in principal amount of Outstanding Senior Notes of
any  series,  the  consent  of  whose  Holders  is  required for modification or
amendment  of  the  Senior  Note  Indenture,  reduce the percentage in principal
amount  of  Outstanding  Senior  Notes  of  any  series  necessary for waiver of
compliance  with  certain  provisions of the Senior Note Indenture or for waiver
of  certain  defaults or modify such provisions with respect to modification and
waiver. (Section 1002).

     The  Holders  of  a  majority in principal amount of the Outstanding Senior
Notes   of  any  series  may  waive  compliance  by  the  Company  with  certain
restrictive  provisions  of  the  Senior  Note  Indenture.  (Section  1108). The
Holders  of  a  majority  in principal amount of the Outstanding Senior Notes of
any  series may waive any past default under the Senior Note Indenture, except a
default  in the payment of principal, premium, or interest and certain covenants
and  provisions of the Senior Note Indenture which cannot be amended without the
consent  of  the Holder of each Outstanding Senior Note of such series affected.
(Section 613).

     The  Senior Note Indenture provides that in determining whether the Holders
of  the requisite principal amount of the Outstanding Senior Notes have given or
taken  any  direction, notice, consent, waiver, or other action under the Senior
Note  Indenture  as  of  any date, (i) the principal amount of an Original Issue
Discount  Note  that  will be deemed to be Outstanding will be the amount of the
principal  thereof  that  would  be  due  and  payable  as  of  such  date  upon
acceleration  of  the  Maturity  thereof to such date, (ii) if, as of such date,
the  principal  amount  payable  at  the Stated Maturity of a Senior Note is not
determinable  (for  example,  because  it  is  based on an index), the principal
amount  of  such Senior Note deemed to be Outstanding as of such date will be an
amount  determined  in  the manner prescribed for such Senior Note and (iii) the
principal  amount of a Senior Note denominated in one or more foreign currencies
or  currency units that will be deemed to be Outstanding will be the U.S. dollar
equivalent,  determined as of such date in the manner prescribed for such Senior
Note,  of  the principal amount of such Senior Note (or, in the case of a Senior
Note  described  in  clause  (i)  or (ii) above, of the amount described in such
clause).  Certain  Senior Notes, including those for whose payment or redemption
money  has  been  deposited or set aside in trust for the Holders and those that
have  been  fully  defeased  pursuant  to Section 1402, will not be deemed to be
Outstanding. (Section 101).

     Except  in  certain  limited circumstances, the Company will be entitled to
set  any  day  as  a  record  date for the purpose of determining the Holders of
Outstanding Senior Notes of any series entitled to give or
                                       16
<PAGE>
take  any  direction,  notice, consent, waiver, or other action under the Senior
Note  Indenture,  in  the  manner and subject to the limitations provided in the
Senior  Note  Indenture.  In  certain  limited  circumstances,  the  Senior Note
Trustee  will  be  entitled  to  set  a  record date for action by Holders. If a
record  date  is  set  for  any  action  to  be taken by Holders of a particular
series,  such action may be taken only by persons who are Holders of Outstanding
Senior  Notes  of  that  series on the record date. To be effective, such action
must  be taken by Holders of the requisite principal amount of such Senior Notes
within  a  specified period following the record date. For any particular record
date,  this  period  will  be  180  days  or such other shorter period as may be
specified  by  the  Company  (or  the  Senior Note Trustee, if it set the record
date),  and  may  be shortened or lengthened (but not beyond 180 days) from time
to time. (Section 104).

Defeasance and Covenant Defeasance

     If  and  to  the  extent indicated in the applicable Prospectus Supplement,
the  Company  may  elect,  at  its option at any time, to have the provisions of
Section  1402,  relating to defeasance and discharge of indebtedness, or Section
1403,  relating  to  defeasance  of  certain restrictive covenants in the Senior
Note  Indenture,  applied to the Senior Notes of any series, or to any specified
part of a series. (Section 1401).

     Defeasance  and  Discharge. The  Senior  Note Indenture provides that, upon
the  Company's  exercise  of its option (if any) to have Section 1402 applied to
any  Senior  Notes, the Company will be discharged from all its obligations with
respect  to  such  Senior  Notes  (except for certain obligations to exchange or
register  the  transfer  of  Senior  Notes, to replace stolen, lost or mutilated
Senior  Notes,  to  maintain  paying  agencies and to hold moneys for payment in
trust)  upon  the deposit in trust for the benefit of the Holders of such Senior
Notes  of  money  or  U.S.  Government  Obligations, or both, which, through the
payment  of  principal  and interest in respect thereof in accordance with their
terms,  will  provide  money in an amount sufficient to pay the principal of and
any  premium  and  interest  on  such  Senior  Notes  on  the  respective Stated
Maturities  in  accordance  with the terms of the Senior Note Indenture and such
Senior  Notes.  Upon such defeasance and discharge, the Senior Note Trustee will
deliver  to the Company for cancellation all Senior Note Mortgage Bonds securing
such  Senior Notes, after which time such Senior Notes will no longer be secured
by  Senior Note Mortgage Bonds. Such defeasance and discharge may occur only if,
among  other  things,  the  Company  has delivered to the Senior Note Trustee an
Opinion  of  Counsel  to the effect that the Company has received from, or there
has  been  published by, the United States Internal Revenue Service a ruling, or
there  has  been  a change in tax law, in either case to the effect that Holders
of  such  Senior  Notes  will  not recognize gain or loss for federal income tax
purposes  as  a  result  of  such deposit, defeasance, and discharge and will be
subject  to federal income tax on the same amount, in the same manner and at the
same  times  as  would  have  been  the  case  if  such  deposit, defeasance and
discharge were not to occur. (Sections 1402 and 1404).

     Defeasance  of  Certain Covenants. The Senior Note Indenture provides that,
upon the Com-pany's  exercise  of  its  option  (if  any)  to  have Section 1403
applied  to  any  Senior  Notes,  the  Company  may  omit to comply with certain
restrictive  covenants  that  may  be  described  in  the  applicable Prospectus
Supplement,  and  the  occurrence  of  certain  Events  of  Default,  which  are
described  above  in  clause  (d)  (with  respect to such restrictive covenants)
under  "Description  of  Senior  Notes -- Events of Default" and any that may be
described  in  the applicable Prospectus Supplement, will be deemed not to be or
result  in  an  Event  of  Default will cease to be effective, in each case with
respect  to  such  Senior  Notes. The Company, in order to exercise such option,
will  be  required  to  deposit, in trust for the benefit of the Holders of such
Senior  Notes, money or U.S. Government Obligations, or both, which, through the
payment  of  principal  and interest in respect thereof in accordance with their
terms,  will  provide  money in an amount sufficient to pay the principal of and
any  premium  and  interest  on  such  Senior  Notes  on  the  respective Stated
Maturities  in  accordance  with the terms of the Senior Note Indenture and such
Senior  Notes. The Company will also be required, among other things, to deliver
to  the  Trustee an Opinion of Counsel to the effect that Holders of such Senior
Notes  will  not  recognize  gain  or  loss for federal income tax purposes as a
result  of  such  deposit  and  defeasance  of  certain  obligations and will be
subject  to federal income tax on the same amount, in the same manner and at the
same times as would have been
                                       17
<PAGE>
the  case  if  such  deposit  and defeasance were not to occur. In the event the
Company  exercised  this option with respect to any Senior Notes and such Senior
Notes  were  declared  due and payable because of the occurrence of any Event of
Default,  the  amount  of  money and U.S. Government Obligations so deposited in
trust  would  be  sufficient to pay amounts due on such Senior Notes at the time
of  their  respective Stated Maturities but may not be sufficient to pay amounts
due  on  such  Senior  Notes  upon any acceleration resulting from such Event of
Default.  In  such  case,  the  Company  would  remain liable for such payments.
(Sections 1403 and 1404).

Notices

     Notices  to  Holders of Senior Notes will be given by mail to the addresses
of  such  Holders  as  they  may  appear in the Note Register. (Sections 101 and
106).

Title

     The  Company,  the Senior Note Trustee, and any agent of the Company or the
Senior  Note  Trustee  may  treat  the  Person  in  whose  name a Senior Note is
registered  as  the  absolute owner thereof (whether or not such Senior Note may
be  overdue)  for  the  purpose  of  making  payment and for all other purposes.
(Section 308).

Governing Law

     The  Senior  Note  Indenture  and the Senior Notes will be governed by, and
construed in accordance with, the law of the State of New York. (Section 112).

Regarding the Senior Note Trustee

     The  Senior  Note  Trustee  is  The Bank of New York. The Company maintains
normal  banking  arrangements  with  The Bank of New York, which include (i) one
commitment  in  the aggregate principal amount of approximately $15.7 million by
The  Bank  of New York pursuant to a reimbursement agreement related to a letter
of credit issued  on  behalf  of  the  Company in connection with an issuance of
pollution  control  bonds,  the  proceeds  of  which  were made available to the
Company,  and  (ii) a $25 million commitment by The Bank of New York pursuant to
a   revolving   credit  agreement,  approximately  $7.8  million  of  which  was
outstanding  at  March 31, 1998. The Bank of New York also serves as (i) trustee
under  the Mortgage, (ii) trustee for the holders of several issues of pollution
control  bonds  issued  on  behalf  of  the  Company,  (iii)  trustee  under the
Company's  Indenture  relating to subordinated Debt Securities (see below), (iv)
investment  manager for the Company's nonunion post-retirement medical fund, and
(v)  custodian  of  international  fixed-income assets for the Company's pension
plan.

                        DESCRIPTION OF DEBT SECURITIES
General

     The  Debt  Securities  may  be  issued  in  one or more new series under an
Indenture  between  the  Company  and  (i)  The Bank of New York, in the case of
subordinated  Debt Securities, and (ii) The Chase Manhattan Bank, in the case of
senior  Debt  Securities, or any other trustees to be named, as Trustee (each, a
"Trustee").  The  following  summary  does  not  purport  to  be complete and is
subject  in  all respects to the provisions of, and is qualified in its entirety
by  reference  to,  the Indentures pursuant to which the subordinated and senior
Debt  Securities are to be issued and to the Debt Securities, the forms of which
are  filed, or will be filed, as exhibits to the registration statement of which
this  Prospectus  forms  a part. Whenever particular provisions or defined terms
in  such  documents  are  referred to herein or in a Prospectus Supplement, such
provisions  or  terms  are  incorporated  by reference herein or therein, as the
case  may  be.  The  term "Debt Securities" does not include Senior Notes, which
are issued under the Senior Note Indenture. See "Description of Senior Notes."

     The  Debt Securities will be unsecured obligations of the Company. Separate
Indentures  will  be  used  for  senior  Debt  Securities  and subordinated Debt
Securities,  respectively,  although  the  description  of the Indenture herein,
except as specifically stated otherwise, applies to both Indentures.
                                       18
<PAGE>
     Reference  is  made to the Prospectus Supplement relating to any particular
issue  of Offered Debt Securities for the following terms: (1) the title of such
Debt  Securities;  (2)  any limit on the aggregate principal amount of such Debt
Securities  or  the  series  of  which they are a part; (3) the date or dates on
which  the  principal  of  any  of such Debt Securities will be payable; (4) the
rate  or  rates at which any of such Debt Securities will bear interest, if any,
the  date  or  dates  from  which  any  such  interest will accrue, the Interest
Payment  Dates on which any such interest will be payable and the Regular Record
Date  for  any such interest payable on any Interest Payment Date; (5) the place
or  places  where  the  principal of and any premium and interest on any of such
Debt  Securities  will be payable, if other than as described under "Description
of  Debt  Securities  --  Payment  and Paying Agents"; (6) the period or periods
within  which,  the  price  or  prices  at which and the terms and conditions on
which  any  of such Debt Securities may be redeemed, in whole or in part, at the
option  of  the Company; (7) the obligation, if any, of the Company to redeem or
purchase  any  of such Debt Securities pursuant to any sinking fund or analogous
provision  or  at  the  option  of the Holder thereof, and the period or periods
within  which,  the  price  or  prices  at which and the terms and conditions on
which  any of such Debt Securities will be redeemed or purchased, in whole or in
part,  pursuant  to  any  such obligation; (8) the denominations in which any of
such  Debt  Securities  will  be issuable, if other than denominations of $1,000
and  any  integral  multiple  thereof;  (9) if the amount of principal of or any
premium  or  interest  on  any  of  such  Debt Securities may be determined with
reference  to  an  index  or  pursuant  to  a  formula, the manner in which such
amounts  will  be  determined;  (10)  if  other  than the currency of the United
States  of  America,  the  currency,  currencies, or currency units in which the
principal  of  or any premium or interest on any of such Debt Securities will be
payable  and the manner of determining the equivalent thereof in the currency of
the  United  States  of  America  for  any  purpose,  including  for purposes of
determining  the  principal amount deemed to be Outstanding at any time; (11) if
the  principal  of  or any premium or interest on any of such Debt Securities is
to  be  payable, at the election of the Company or the Holder thereof, in one or
more  currencies,  or  currency  units  other  than  those  in  which  such Debt
Securities  are stated to be payable, the currency, currencies or currency units
in  which  payment  of any such amount as to which such election is made will be
payable,  the  periods within which and the terms and conditions upon which such
election  is  to  be made and the amount so payable (or the manner in which such
amount  is  to  be  determined);  (12) if other than the entire principal amount
thereof,  the  portion  of  the  principal amount of any of such Debt Securities
which  will be payable upon declaration of acceleration of the Maturity thereof;
(13)  if the principal amount payable at the Stated Maturity of any of such Debt
Securities  will  not  be  determinable as of any one or more dates prior to the
Stated  Maturity, the amount which will be deemed to be such principal amount as
of  any  such date for any purpose, including the principal amount thereof which
will  be  due  and  payable  upon any Maturity other than the Stated Maturity or
which  will  be  deemed  to  be Outstanding as of any such date (or, in any such
case,  the  manner  in  which such deemed principal amount is to be determined);
(14)  if  applicable, that such Debt Securities, in whole or any specified part,
are  defeasible  pursuant  to  the  provisions  of the Indenture described under
"Description  of  Debt  Securities  --  Defeasance  and  Covenant  Defeasance --
Defeasance  and  Discharge" or "Description of Debt Securities -- Defeasance and
Covenant  Defeasance  -- Covenant Defeasance," or under both such captions; (15)
whether  any of such Debt Securities will be issuable in whole or in part in the
form  of  one  or more Global Securities and, if so, the respective Depositaries
for  such  Global  Securities,  the form of any legend or legends to be borne by
any  such  Global  Security  in addition to or in lieu of the legend referred to
under  "Description  of  Debt Securities -- Global Securities" and, if different
from  those described under such caption, any circumstances under which any such
Global  Security  may  be  exchanged  in  whole  or  in part for Debt Securities
registered,  and any transfer of such Global Security in whole or in part may be
registered,  in  the  names of Persons other than the Depositary for such Global
Security  or  its  nominee;  (16)  any  addition  to  or change in the Events of
Default  applicable  to  any of such Debt Securities and any change in the right
of  the  Trustee  or  the Holders to declare the principal amount of any of such
Debt  Securities  due  and  payable;  (17)  any  addition  to  or  change in the
covenants  in  the  Indenture;  and (18) any other terms of such Debt Securities
not inconsistent with the provisions of the Indenture. (Section 301).

     Debt  Securities, including Original Issue Discount Securities, may be sold
at  a  substantial discount below their principal amount. Certain special United
States federal income tax considerations (if any)
                                       19
<PAGE>
applicable  to  Debt  Securities  sold  at  an  original  issue  discount may be
described  in the applicable Prospectus Supplement. In addition, certain special
United  States federal income tax or other considerations (if any) applicable to
any  Debt  Securities which are denominated in a currency or currency unit other
than  United  States  dollars  may  be  described  in  the applicable Prospectus
Supplement.

     Except  as  otherwise described in the Prospectus Supplement, the covenants
contained  in  the  Indenture  would  not  afford  holders  of  Debt  Securities
protection  in  the  event  of  a  highly-leveraged  transaction  involving  the
Company.

Subordination

     The  Indenture  relating to the subordinated Debt Securities provides that,
unless  otherwise  provided  in  a supplemental indenture or a Board Resolution,
the  Debt  Securities will be subordinate and subject in right of payment to the
prior  payment in full of all Senior Debt of the Company, whether outstanding as
of  the  date  of  the  Indenture  or  thereafter  incurred. (Section 1401). The
balance  of  the information under this "Subordination" heading assumes that the
relevant   supplemental   indenture   or   Board   Resolution   results  in  the
corresponding series of Debt Securities being subordinated obligations of the
Company.

     No   payment  of  principal  of  (including  redemption  and  sinking  fund
payments),  premium,  if  any,  or interest on, the subordinated Debt Securities
may  be  made  if  any  Senior  Debt  is not paid when due, any applicable grace
period  with  respect  to  such  default has ended and such default has not been
cured  or  waived,  or  if  the maturity of any Senior Debt has been accelerated
because  of  a  default.  (Section 1402). Upon any distribution of assets of the
Company   to   creditors   upon  any  dissolution,  winding-up,  liquidation  or
reorganization,  whether  voluntary or involuntary or in bankruptcy, insolvency,
receivership  or  other  proceedings, all principal of, and premium, if any, and
interest  due  or  to become due on, all Senior Debt must be paid in full before
the  holders  of  the  subordinated  Debt  Securities are entitled to receive or
retain   any  payment.  (Section  1403).  The  rights  of  the  holders  of  the
subordinated  Debt  Securities will be subordinated to the rights of the holders
of  Senior  Debt  to receive payments or distributions applicable to Senior Debt
until  all  amounts  owing  on  the  Debt  Securities are paid in full. (Section
1404).

     The  term  "Senior  Debt"  shall  mean  the  principal of, premium, if any,
interest  on and any other payment due pursuant to any of the following, whether
outstanding  at  the  date of execution of the Indenture or thereafter incurred,
created or assumed:

       (a)  all  indebtedness  of  the  Company  evidenced by notes, debentures,
   bonds,  or  other  securities  sold  by  the Company for money, including all
   first mortgage bonds of the Company outstanding from time to time;

       (b)  all  indebtedness  of others of the kinds described in the preceding
   clause (a) assumed by or guaranteed in any manner by the Company; and

       (c)  all renewals, extensions, or refundings of indebtedness of the kinds
   described in any of the preceding clauses (a) and (b);

unless,  in  the  case  of  any  particular  indebtedness, renewal, extension or
refunding,  the  instrument creating or evidencing the same or the assumption or
guarantee  of  the  same  expressly  provides  that  such indebtedness, renewal,
extension  or  refunding is not superior in right of payment to or is pari passu
with the Debt Securities. (Section 101).

     The  Indenture  does not limit the aggregate amount of Senior Debt that the
Company   may  issue.  As  of  March  31,  1998,  outstanding  Senior  Debt  and
subordinated  debt  of the Company aggregated approximately $1.9 billion and $75
million,  respectively.  Any Senior Notes issued by the Company would constitute
Senior  Debt,  whether  before  or  after  the Release Date. See "Description of
Senior Notes -- Release Date."

Form, Exchange, and Transfer

     The  Debt  Securities  of  each  series  will  be  issuable  only  in fully
registered   form  without  coupons  and,  unless  otherwise  specified  in  the
applicable  Prospectus  Supplement,  in denominations of $1,000 and any integral
multiple thereof. (Section 302).
                                       20
<PAGE>
     At  the option of the Holder, subject to the terms of the Indenture and the
limitations  applicable to Global Securities, Debt Securities of any series will
be  exchangeable for other Debt Securities of the same series, of any authorized
denomination and of like tenor and aggregate principal amount. (Section 305).

     Subject  to  the  terms  of the Indenture and the limitations applicable to
Global  Securities,  Debt  Securities  may be presented for exchange as provided
above  or  for  registration  of  transfer  (duly  endorsed  or with the form of
transfer  endorsed  thereon  duly  executed)  at  the  office  of  the  Security
Registrar  or  at the office of any transfer agent designated by the Company for
such  purpose.  No  service charge will be made for any registration of transfer
or  exchange  of  Debt  Securities, but the Company may require payment of a sum
sufficient  to  cover any tax or other governmental charge payable in connection
therewith.  Such  transfer  or  exchange  will  be  effected  upon  the Security
Registrar  or  such transfer agent, as the case may be, being satisfied with the
documents  of  title  and identity of the person making the request. The Company
has  appointed  the  Trustee  as  Security  Registrar.  Any  transfer  agent (in
addition  to the Security Registrar) initially designated by the Company for any
Debt  Securities will be named in the applicable Prospectus Supplement. (Section
305).  The  Company  may  at  any  time  designate additional transfer agents or
rescind  the designation of any transfer agent or approve a change in the office
through  which any transfer agent acts, except that the Company will be required
to  maintain  a  transfer agent in each Place of Payment for the Debt Securities
of each series. (Section 1002).

     If  the  Debt  Securities  of  any  series  (or of any series and specified
tenor)  are  to  be  redeemed,  the  Company  will not be required to (i) issue,
register  the  transfer  of, or exchange any Debt Security of that series (or of
that  series  and specified tenor, as the case may be) during a period beginning
at  the  opening  of  business  15 days before the day of mailing of a notice of
redemption  of  any  such  Debt Security that may be selected for redemption and
ending  at the close of business on the day of such mailing or (ii) register the
transfer  of  or exchange any Debt Security so selected for redemption, in whole
or  in  part,  except  the  unredeemed  portion  of any such Debt Security being
redeemed in part. (Section 305).

Global Securities

     Some  or  all  of  the Debt Securities of any series may be represented, in
whole  or in part, by one or more Global Securities which will have an aggregate
principal  amount equal to that of the Debt Securities represented thereby. Each
Global  Security  will  be  registered  in the name of a Depositary or a nominee
thereof  identified  in  the applicable Prospectus Supplement, will be deposited
with  such  Depositary or nominee or a custodian therefor and will bear a legend
regarding  the  restrictions  on  exchanges and registration of transfer thereof
referred  to below and any such other matters as may be provided for pursuant to
the Indenture.

     Notwithstanding  any  provision  of  the  Indenture  or  any  Debt Security
described  herein,  no  Global Security may be exchanged in whole or in part for
Debt  Securities registered, and no transfer of a Global Security in whole or in
part  may be registered, in the name of any Person other than the Depositary for
such  Global  Security  or  any  nominee  of  such  Depositary  unless  (i)  the
Depositary  has  notified the Company that it is unwilling or unable to continue
as  Depositary  for such Global Security or has ceased to be qualified to act as
such  as  required  by  the  Indenture,  (ii)  there  shall have occurred and be
continuing  an  Event of Default with respect to the Debt Securities represented
by  such  Global Security or (iii) there shall exist such circumstances, if any,
in  addition  to  or in lieu of those described above as may be described in the
applicable  Prospectus  Supplement.  All  securities  issued  in  exchange for a
Global  Security  or any portion thereof will be registered in such names as the
Depositary may direct. (Sections 204 and 305).

     As  long  as  the Depositary, or its nominee, is the registered Holder of a
Global  Security,  the  Depositary  or such nominee, as the case may be, will be
considered  the  sole  owner  and  Holder  of  such Global Security and the Debt
Securities  represented  thereby  for all purposes under the Debt Securities and
the  Indenture. Except in the limited circumstances referred to above, owners of
beneficial  interests  in  a  Global  Security will not be entitled to have such
Global  Security  or any Debt Securities represented thereby registered in their
names,  will  not  receive  or  be  entitled  to  receive  physical  delivery of
certificated
                                       21
<PAGE>
Debt  Securities  in  exchange  therefor  and  will  not be considered to be the
owners  or  Holders  of  such Global Security or any Debt Securities represented
thereby  for  any  purpose  under  the  Debt  Securities  or  the Indenture. All
payments  of principal of and any premium and interest on a Global Security will
be  made  to  the  Depositary  or its nominee, as the case may be, as the Holder
thereof.  The  laws  of  some  jurisdictions  require that certain purchasers of
securities  take  physical delivery of such securities in definitive form. These
laws  may  impair  the  ability  to  transfer  beneficial  interests in a Global
Security.

     Ownership  of  beneficial interests in a Global Security will be limited to
institutions   that   have   accounts   with   the  Depositary  or  its  nominee
("participants")  and  to  persons  that  may  hold beneficial interests through
participants.  In  connection  with  the  issuance  of  any Global Security, the
Depositary  will credit, on its book-entry registration and transfer system, the
respective  principal  amounts  of  Debt  Securities  represented  by the Global
Security  to the accounts of its participants. Ownership of beneficial interests
in  a Global Security will be shown only on, and the transfer of those ownership
interests  will  be  effected only through, records maintained by the Depositary
(with  respect to participants' interests) or any such participant (with respect
to  interests  of  persons held by such participants on their behalf). Payments,
transfers,  exchanges,  and others matters relating to beneficial interests in a
Global  Security  may  be  subject to various policies and procedures adopted by
the  Depositary from time to time. None of the Company, the Trustee or any agent
of  the Company or the Trustee will have any responsibility or liability for any
aspect  of  the  Depositary's  or  any participant's records relating to, or for
payments  made  on account of, beneficial interests in a Global Security, or for
maintaining,  supervising,  or reviewing any records relating to such beneficial
interests.

Payment and Paying Agents

     Unless   otherwise  indicated  in  the  applicable  Prospectus  Supplement,
payment  of  interest  on  a  Debt Security on any Interest Payment Date will be
made  to the Person in whose name such Debt Security (or one or more Predecessor
Debt  Securities)  is  registered at the close of business on the Regular Record
Date for such interest. (Section 307).

     Unless   otherwise  indicated  in  the  applicable  Prospectus  Supplement,
principal  of  and  any  premium  and  interest  on  the  Debt  Securities  of a
particular  series  will be payable at the office of such Paying Agent or Paying
Agents  as  the Company may designate for such purpose from time to time, except
that  at  the option of the Company payment of any interest may be made by check
mailed  to the address of the Person entitled thereto as such address appears in
the  Security  Register. Unless otherwise indicated in the applicable Prospectus
Supplement,  the  corporate  trust office of the Trustee in The City of New York
will  be designated as the Company's sole Paying Agent for payments with respect
to  Debt Securities of each series. Any other Paying Agents initially designated
by  the  Company for the Debt Securities of a particular series will be named in
the  applicable  Prospectus  Supplement.  The  Company may at any time designate
additional  Paying  Agents  or  rescind  the  designation of any Paying Agent or
approve  a change in the office through which any Paying Agent acts, except that
the  Company  will  be  required  to  maintain  a  Paying Agent in each Place of
Payment for the Debt Securities of a particular series. (Section 1002).

     All  moneys  paid  by  the Company to a Paying Agent for the payment of the
principal  of  or  any  premium  or  interest  on any Debt Security which remain
unclaimed  at the end of two years after such principal, premium or interest has
become  due  and  payable  will be repaid to the Company, and the Holder of such
Debt  Security  thereafter  may  look  only  to the Company for payment thereof.
(Section 1003).

Consolidation, Merger, and Sale of Assets

     Unless  otherwise  indicated  in  the applicable Prospectus Supplement, the
Company  may  not  consolidate  with  or  merge into any other Person or convey,
transfer  or lease its properties and assets substantially as an entirety to any
Person,  and  may  not  permit  any Person to consolidate with or merge into the
Company  or  convey,  transfer, or lease its properties and assets substantially
as  an  entirety  to  the Company, unless (i) the successor Person (if any) is a
corporation,  partnership,  trust or other entity organized and validly existing
under   the  laws  of  any  domestic  jurisdiction  and  assumes  the  Company's
obligations  on  the  Debt  Securities and under the Indenture, (ii) immediately
after giving effect to the
                                       22
<PAGE>
transaction,  no  Event of Default, and no event which, after notice or lapse of
time  or  both,  would  become  an  Event of Default, shall have occurred and be
continuing and (iii) certain other conditions are met. (Section 801).

Events of Default

     Each  of  the  following  will  constitute  an  Event  of Default under the
Indenture  with  respect  to  Debt  Securities of any series: (a) failure to pay
principal  of  or  any premium on any Debt Security of that series when due; (b)
failure  to  pay  any  interest  on any Debt Securities of that series when due,
continued  for  30  days;  (c) failure to deposit any sinking fund payment, when
due,  in respect of any Debt Security of that series; (d) failure to perform any
other  covenant  of the Company in the Indenture (other than a covenant included
in  the  Indenture  solely  for the benefit of a series other than that series),
continued  for  90  days  after written notice has been given by the Trustee, or
the  Holders  of  at  least  25%  in  principal  amount  of the Outstanding Debt
Securities  of that series, as provided in the Indenture; and (e) certain events
in bankruptcy, insolvency or reorganization. (Section 501).

     If  an Event of Default (other than an Event of Default described in clause
(e)  above)  with  respect  to  the  Debt  Securities  of any series at the time
Outstanding  shall occur and be continuing, either the Trustee or the Holders of
at  least  25%  in aggregate principal amount of the Outstanding Debt Securities
of  that series by notice as provided in the Indenture may declare the principal
amount  of  the  Debt  Securities  of  that  series (or, in the case of any Debt
Security  that is an Original Issue Discount Security or the principal amount of
which  is  not  then  determinable, such portion of the principal amount of such
Debt  Security, or such other amount in lieu of such principal amount, as may be
specified   in  the  terms  of  such  Debt  Security)  to  be  due  and  payable
immediately.  If  an Event of Default described in clause (e) above with respect
to  the  Debt  Securities of any series at the time Outstanding shall occur, the
principal  amount  of all the Debt Securities of that series (or, in the case of
any  such  Original  Issue  Discount  Security  or  other  Debt  Security,  such
specified  amount)  will automatically, and without any action by the Trustee or
any  Holder,  become  immediately  due and payable. After any such acceleration,
but  before  a  judgment  or  decree  based  on  acceleration,  the Holders of a
majority  in  aggregate  principal  amount of the Outstanding Debt Securities of
that   series   may,   under  certain  circumstances,  rescind  and  annul  such
acceleration   if   all  Events  of  Default,  other  than  the  non-payment  of
accelerated  principal (or other specified amount), have been cured or waived as
provided  in  the  Indenture.  (Section  502).  For  information as to waiver of
defaults, see "Modification and Waiver."

     Subject  to  the  provisions of the Indenture relating to the duties of the
Trustee  in  case an Event of Default shall occur and be continuing, the Trustee
will  be  under  no obligation to exercise any of its rights or powers under the
Indenture  at  the  request  or  direction  of  any  of the Holders, unless such
Holders  shall  have offered to the Trustee reasonable indemnity. (Section 603).
Subject  to  such provisions for the indemnification of the Trustee, the Holders
of  a  majority  in  principal  amount of the Outstanding Debt Securities of any
series  will  have  the right to direct the time, method and place of conducting
any  proceeding for any remedy available to the Trustee, or exercising any trust
or  power  conferred on the Trustee, with respect to the Debt Securities of that
series. (Section 512).

     No  Holder  of  a  Debt  Security  of  any  series  will  have any right to
institute  any  proceeding with respect to the Indenture, or for the appointment
of  a receiver or a trustee, or for any other remedy thereunder, unless (i) such
Holder  has previously given to the Trustee written notice of a continuing Event
of  Default with respect to the Debt Securities of that series, (ii) the Holders
of  at  least  25%  in  aggregate  principal  amount  of  the  Outstanding  Debt
Securities  of that series have made written request, and such Holder or Holders
have  offered  reasonable indemnity, to the Trustee to institute such proceeding
as  trustee  and  (iii) the Trustee has failed to institute such proceeding, and
has  not  received  from the Holders of a majority in aggregate principal amount
of  the Outstanding Debt Securities of that series a direction inconsistent with
such  request,  within  60  days  after such notice, request and offer. (Section
507).  However,  such  limitations do not apply to a suit instituted by a Holder
of  a  Debt  Security  for the enforcement of payment of the principal of or any
premium  or  interest  on such Debt Security on or after the applicable due date
specified in such Debt Security. (Section 508).
                                       23
<PAGE>
     The  Company  will  be  required  to  furnish  to  the  Trustee  annually a
statement  by certain of its officers as to whether or not the Company, to their
knowledge,  is  in default in the performance or observance of any of the terms,
provisions  and  conditions  of  the  Indenture  and, if so, specifying all such
known defaults. (Section 1004).

Modification and Waiver

     Modifications  and  amendments  of the Indenture may be made by the Company
and  the  Trustee  with  the  consent of the Holders of not less than 66 2/3% in
aggregate  principal  amount  of  the Outstanding Debt Securities of each series
affected  by  such  modification  or  amendment; provided, however, that no such
modification  or  amendment  may,  without  the  consent  of  the Holder of each
Outstanding  Debt  Security  affected thereby, (a) change the Stated Maturity of
the  principal  of,  or  any instalment of principal of or interest on, any Debt
Security,  (b)  reduce  the  principal amount of, or any premium or interest on,
any  Debt  Security,  (c)  reduce  the  amount of principal of an Original Issue
Discount  Security  or  any other Debt Security payable upon acceleration of the
Maturity  thereof,  (d) change the place or currency of payment of principal of,
or  any  premium  or  interest  on,  any  Debt Security, (e) impair the right to
institute  suit  for  the  enforcement  of any payment on or with respect to any
Debt  Security,  (f)  reduce  the  percentage in principal amount of Outstanding
Debt  Securities  of  any  series,  the consent of whose Holders is required for
modification  or  amendment of the Indenture, reduce the percentage in principal
amount  of  Outstanding  Debt  Securities  of any series necessary for waiver of
compliance  with  certain  provisions  of the Indenture or for waiver of certain
defaults  or  modify  such  provisions  with respect to modification and waiver.
(Section 902).

     The  Holders  of not less than 66 2/3% in aggregate principal amount of the
Outstanding  Debt  Securities  of any series may waive compliance by the Company
with  certain  restrictive  provisions  of  the  Indenture.  (Section 1008). The
Holders  of a majority in principal amount of the Outstanding Debt Securities of
any  series  may waive any past default under the Indenture, except a default in
the  payment  of  principal,  premium,  or  interest  and  certain covenants and
provisions  of  the Indenture which cannot be amended without the consent of the
Holder  of  each  Outstanding  Debt  Security  of such series affected. (Section
513).

     The  Indenture  provides  that  in  determining  whether the Holders of the
requisite  principal  amount  of  the  Outstanding Debt Securities have given or
taken  any  direction,  notice,  consent,  waiver,  or  other  action  under the
Indenture  as  of  any  date,  (i)  the  principal  amount  of an Original Issue
Discount  Security  that  will be deemed to be Outstanding will be the amount of
the  principal  thereof  that  would  be  due  and  payable as of such date upon
acceleration  of  the  Maturity  thereof to such date, (ii) if, as of such date,
the  principal  amount  payable at the Stated Maturity of a Debt Security is not
determinable  (for  example,  because  it  is  based on an index), the principal
amount  of  such  Debt Security deemed to be Outstanding as of such date will be
an  amount  determined in the manner prescribed for such Debt Security and (iii)
the  principal  amount  of  a  Debt  Security denominated in one or more foreign
currencies  or  currency units that will be deemed to be Outstanding will be the
U.S.  dollar equivalent, determined as of such date in the manner prescribed for
such  Debt  Security,  of the principal amount of such Debt Security (or, in the
case  of  a  Debt  Security described in clause (i) or (ii) above, of the amount
described  in  such  clause). Certain Debt Securities, including those for whose
payment  or  redemption  money  has been deposited or set aside in trust for the
Holders  and  those that have been fully defeased pursuant to Section 1302, will
not be deemed to be Outstanding. (Section 101).

     Except  in  certain  limited circumstances, the Company will be entitled to
set  any  day  as  a  record  date for the purpose of determining the Holders of
Outstanding  Debt  Securities  of  any  series  entitled  to  give  or  take any
direction,  notice, consent, waiver, or other action under the Indenture, in the
manner  and  subject  to  the  limitations provided in the Indenture. In certain
limited  circumstances,  the  Trustee  will be entitled to set a record date for
action  by  Holders.  If  a  record  date  is  set for any action to be taken by
Holders  of  a  particular  series, such action may be taken only by persons who
are  Holders  of  Outstanding Debt Securities of that series on the record date.
To  be  effective,  such  action  must  be  taken  by  Holders  of the requisite
principal  amount  of  such  Debt Securities within a specified period following
the  record  date.  For any particular record date, this period will be 180 days
or such other shorter period as may be
                                       24
<PAGE>
specified  by  the  Company (or the Trustee, if it set the record date), and may
be  shortened  or  lengthened  (but  not  beyond  180  days)  from time to time.
(Section 104).

Defeasance and Covenant Defeasance

     If  and  to  the  extent indicated in the applicable Prospectus Supplement,
the  Company  may  elect,  at  its option at any time, to have the provisions of
Section  1302,  relating to defeasance and discharge of indebtedness, or Section
1303,  relating to defeasance of certain restrictive covenants in the Indenture,
applied  to  the  Debt  Securities  of any series, or to any specified part of a
series. (Section 1301).

     Defeasance  and  Discharge. The Indenture provides that, upon the Company's
exercise  of  its  option  (if  any)  to  have  Section 1302 applied to any Debt
Securities,  the  Company  will  be  discharged  from  all  its obligations with
respect  to  such Debt Securities (except for certain obligations to exchange or
register  the  transfer of Debt Securities, to replace stolen, lost or mutilated
Debt  Securities,  to maintain paying agencies and to hold moneys for payment in
trust)  upon  the  deposit  in trust for the benefit of the Holders of such Debt
Securities  of money or U.S. Government Obligations, or both, which, through the
payment  of  principal  and interest in respect thereof in accordance with their
terms,  will  provide  money in an amount sufficient to pay the principal of and
any  premium  and  interest  on  such  Debt  Securities on the respective Stated
Maturities  in  accordance  with  the  terms  of  the  Indenture  and  such Debt
Securities.  Such defeasance or discharge may occur only if, among other things,
the  Company  has  delivered  to the Trustee an Opinion of Counsel to the effect
that  the  Company has received from, or there has been published by, the United
States  Internal  Revenue  Service  a  ruling, or there has been a change in tax
law,  in either case to the effect that Holders of such Debt Securities will not
recognize  gain  or  loss  for  federal  income tax purposes as a result of such
deposit,  defeasance, and discharge and will be subject to federal income tax on
the  same  amount,  in  the same manner and at the same times as would have been
the  case if such deposit, defeasance and discharge were not to occur. (Sections
1302 and 1304).

     Defeasance  of  Certain  Covenants. The  Indenture  provides that, upon the
Company's  exercise  of  its option (if any) to have Section 1303 applied to any
Debt  Securities,  the  Company  may  omit  to  comply  with certain restrictive
covenants  that  may  be  described in the applicable Prospectus Supplement, and
the  occurrence  of  certain  Events  of  Default,  which are described above in
clause  (d)  (with  respect  to  such  restrictive  covenants)  under "Events of
Default"  and any that may be described in the applicable Prospectus Supplement,
will  be deemed not to be or result in an Event of Default and the provisions of
Article  Fourteen  relating to subordination (included in the Indenture relating
to  subordinated  Debt Securities) will cease to be effective, in each case with
respect  to such Debt Securities. The Company, in order to exercise such option,
will  be  required  to  deposit, in trust for the benefit of the Holders of such
Debt  Securities,  money or U.S. Government Obligations, or both, which, through
the  payment  of  principal  and  interest in respect thereof in accordance with
their  terms, will provide money in an amount sufficient to pay the principal of
and  any  premium  and interest on such Debt Securities on the respective Stated
Maturities  in  accordance  with  the  terms  of  the  Indenture  and  such Debt
Securities.  The  Company  will also be required, among other things, to deliver
to  the  Trustee  an  Opinion of Counsel to the effect that Holders of such Debt
Securities  will not recognize gain or loss for federal income tax purposes as a
result  of  such  deposit  and  defeasance  of  certain  obligations and will be
subject  to federal income tax on the same amount, in the same manner and at the
same  times  as would have been the case if such deposit and defeasance were not
to  occur.  In  the  event the Company exercised this option with respect to any
Debt  Securities  and such Debt Securities were declared due and payable because
of  the  occurrence  of  any  Event  of  Default,  the  amount of money and U.S.
Government  Obligations so deposited in trust would be sufficient to pay amounts
due  on  such  Debt Securities at the time of their respective Stated Maturities
but  may  not  be sufficient to pay amounts due on such Debt Securities upon any
acceleration  resulting  from  such  Event of Default. In such case, the Company
would remain liable for such payments. (Sections 1303 and 1304).

Notices

     Notices  to  Holders  of  Debt  Securities  will  be  given  by mail to the
addresses  of  such  Holders  as  they  may  appear  in  the  Security Register.
(Sections 101 and 106).
                                       25
<PAGE>
Title

     The  Company,  the Trustee, and any agent of the Company or the Trustee may
treat  the  Person  in  whose name a Debt Security is registered as the absolute
owner  thereof  (whether  or  not  such  Debt  Security  may be overdue) for the
purpose of making payment and for all other purposes. (Section 308).

Governing Law

     The  Indenture  and  the Debt Securities will be governed by, and construed
in accordance with, the law of the State of New York. (Section 112).

Regarding the Trustees

     The   Trustee  under  the  Indenture  relating  to  the  subordinated  Debt
Securities  is  The  Bank  of  New  York.  The  Company maintains normal banking
arrangements  with The Bank of New York, which include (i) one commitment in the
aggregate  principal  amount  of  approximately $15.7 million by The Bank of New
York  pursuant to a reimbursement agreement related to a letter of credit issued
on behalf of  the Company  in connection  with an issuance of pollution  control
bonds,  the proceeds of which were made available to the Company, and (ii) a $25
million  commitment  by  The  Bank  of  New  York pursuant to a revolving credit
agreement,  approximately  $7.8  million  of  which was outstanding at March 31,
1998.  The  Bank  of New York also serves as (i) trustee under the Mortgage (see
"Description  of  New Bonds"), (ii) trustee for the holders of several issues of
pollution  control  bonds  issued  on behalf of the Company, (iii) trustee under
the  Senior  Note Indenture (see "Description of Senior Notes"), (iv) investment
manager  for  the  Company's  nonunion  post-retirement  medical  fund  and  (v)
custodian  of  international fixed-income assets for the Company's pension plan.
The  Trustee  under  the Indenture relating to the senior Debt Securities is The
Chase  Manhattan  Bank.  The  Company maintains normal banking arrangements with
The  Chase  Manhattan  Bank. The Chase Manhattan Bank also (i) serves as trustee
for  the  holders of several series of bonds secured by, among other things, the
Company's  payments  under  its  Palo  Verde  Nuclear  Generating Station leases
(these  bonds were issued by a party unaffiliated with the Company), (ii) serves
as  an  issuing  and paying agent with respect to the Company's commercial paper
program,  and (iii) has a commitment to lend the Company up to $55 million under
a   revolving  credit  agreement,  approximately  $17.2  million  of  which  was
outstanding  as  of  March  31,  1998.  In  addition,  an affiliate of The Chase
Manhattan  Bank  is the lessor with respect to a lease with the Company relating
to  the  sale  and  leaseback  of  a portion of Unit 2 of the Palo Verde Nuclear
Generating Station.

                              PLAN OF DISTRIBUTION

     The  Company  intends  to  sell  up  to $400 million in aggregate principal
amount  of the Offered Securities to or through underwriters or dealers, and may
also  sell  the  Offered  Securities  directly  to  other  purchasers or through
agents,  as  described  in  the  Prospectus  Supplement  relating to an issue of
Offered Securities.

     The  distribution  of  the  Offered Securities may be effected from time to
time  in  one  or  more  transactions  at  a fixed price or prices, which may be
changed,  or  at market prices prevailing at the time of sale, at prices related
to such prevailing market prices, or at negotiated prices.

     In  connection  with  the  sale of the Offered Securities, underwriters may
receive  compensation  from the Company or from purchasers of Offered Securities
for  whom  they  may  act  as  agents  in the form of discounts, concessions, or
commissions.  Underwriters  may  sell  Offered Securities to or through dealers,
and   such   dealers   may  receive  compensation  in  the  form  of  discounts,
concessions,  or  commissions  from the underwriters and/or commissions from the
purchasers  for  whom  they may act as agents. Underwriters, dealers, and agents
that  participate  in the distribution of Offered Securities may be deemed to be
underwriters,  and  any  discounts  or  commissions  received  by  them from the
Company  and  any  profit  on  the  resale  of Offered Securities by them may be
deemed  to be underwriting discounts and commissions under the Securities Act of
1933  (the  "1933  Act"). Any such person who may be deemed to be an underwriter
will  be identified, and any such compensation received from the Company will be
described, in the Prospectus Supplement.
                                       26
<PAGE>
     Under  agreements  which  may be entered into by the Company, underwriters,
dealers,  and  agents  who  participate  in  the  distribution  of  the  Offered
Securities  may  be  entitled  to indemnification by the Company against certain
liabilities, including liabilities under the 1933 Act.

                                    EXPERTS

     The  financial  statements  incorporated in this Prospectus by reference to
the  Company's  1997  Annual Report on 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.

                                LEGAL OPINIONS

     The  validity  of the Securities offered hereby will be passed upon for the
Company  by  Snell  & Wilmer L.L.P., One Arizona Center, Phoenix, Arizona 85004,
and,  it  is  currently  anticipated,  for  any  underwriters  of  Securities by
Sullivan  & Cromwell, 444 South Flower Street, Los Angeles, California 90071. In
giving  their  opinions,  Sullivan & Cromwell and Snell & Wilmer L.L.P. may rely
as  to  matters  of  New  Mexico law upon the opinion of Keleher & McLeod, P.A.,
1200  Public  Service  Building,  Albuquerque,  New  Mexico  87102,  Sullivan  &
Cromwell  may  rely as to all matters of Arizona law upon the opinion of Snell &
Wilmer  L.L.P., and Snell & Wilmer L.L.P. may rely as to all matters of New York
law upon the opinion of Sullivan & Cromwell.
                                       27
<PAGE>
================================================================================

       No  person  has  been  authorized  to give any information or to make any
representation  not  contained  in  this  Prospectus and, if given or made, such
information   or   representation  must  not  be  relied  upon  as  having  been
authorized.  This  Prospectus  does  not  constitute  an  offer  to  sell  or  a
solicitation  of  an  offer  to  buy any of the securities offered hereby in any
jurisdiction  to  any  person  to whom it is unlawful to make such offer in such
jurisdiction.  Neither  the  delivery  of  this  Prospectus  nor  any  sale made
hereunder  shall,  under  any  circumstances,  create  any  implication that the
information  herein  is  correct as of any time subsequent to the date hereof or
that there has been no change in the affairs of the Company since such date.

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

                               TABLE OF CONTENTS

                                                            Page
                                                           -----

                 Available Information ...................   2
                 Incorporation of Certain Documents by
                    Reference ............................   2
                 Selected Information ....................   3
                 The Company .............................   4
                 Application of Proceeds .................   4
                 Earnings Ratios .........................   4
                 Securities ..............................   4
                 Description of New Bonds ................   4
                 Description of Senior Notes .............   9
                 Description of Debt Securities ..........  18
                 Plan of Distribution ....................  26
                 Experts .................................  27
                 Legal Opinions ..........................  27

                                        
                                 $400,000,000



                            Arizona Public Service
                                    Company


                              First Mortgage Bonds
                                 Senior Notes
                                Debt Securities

                                      -----
                                       APS
                                      -----

================================================================================
<PAGE>
                                    PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS


Item 14.  Other Expenses of Issuance and Distribution.

Securities and Exchange Commission registration fee .........   $103,250
Printing, engraving, and postage expenses ...................     60,000
Legal fees ..................................................    250,000
Accounting fees .............................................     40,000
Rating Agency fees ..........................................    192,750
Trustee's fees and expenses .................................     30,000
Blue Sky fees and expenses ..................................     30,000
Miscellaneous ...............................................      4,000
                                                                --------
   Total ....................................................   $710,000
                                                                ========

- ------------
*Estimated.

Item 15. Indemnification of Directors and Officers.

     The  law of Arizona permits extensive indemnification of present and former
directors,  officers,  employees or agents of an Arizona corporation, whether or
not  authority  for  such  indemnification  is  contained  in  the  indemnifying
corporation's  articles  of  incorporation  or  bylaws.  Specific  authority for
indemnification  of  present  and  former  directors and officers, under certain
circumstances,  is  contained  in  Article  Fifth  of  the Company's Articles of
Incorporation.  In  addition, Section 7.01 of the Company's bylaws provides that
the  Company  will  indemnify  present  and former directors and officers to the
fullest  extent  permitted  by  Arizona  law.  Under Arizona law, in order for a
corporation   to  provide  indemnification,  a  disinterested  majority  of  the
corporation's  board  of  directors,  independent  legal counsel, a court or the
shareholders  must  find that the director, officer, employee or agent acted, or
failed  to  act,  in good faith and in a manner he reasonably believed to be in,
or  not  opposed to, the best interests of the corporation, and, with respect to
any  criminal  action  or  proceeding,  had no reason to believe his conduct was
unlawful.  Statutory  indemnification  is  permissive,  except in the event of a
successful  defense,  when  a  director,  officer,  employee  or  agent  must be
indemnified   against   expenses,   including   attorneys'  fees,  actually  and
reasonably   incurred   by  him  in  connection  therewith.  Indemnification  is
permitted  with  respect  to  expenses,  judgments,  fines,  and amounts paid in
settlement by such persons.

     On  January  1, 1996, the new Arizona Business Corporation Act (the "ABCA")
became  effective.  The  ABCA  permits  extensive indemnification of present and
former  directors,  officers,  employees,  or  agents of an Arizona corporation,
whether   or  not  authority  for  such  indemnification  is  contained  in  the
indemnifying  corporation's articles of incorporation or bylaws. Under the ABCA,
in  order  for  a  corporation  to  provide  indemnification,  a majority of the
corporation's   disinterested  directors,  independent  legal  counsel,  or  the
shareholders  must find that the conduct of the individual to be indemnified was
in  good  faith and that the individual reasonably believed that the conduct was
in  the  corporation's  best  interests  (in the case of conduct in an "official
capacity"  with the corporation) or that the conduct was at least not opposed to
the  corporation's  best  interests  (in  all  other  cases). In the case of any
criminal  proceeding,  the finding must be to the effect that the individual had
no  reasonable  cause  to  believe  the conduct was unlawful. Indemnification is
permitted  with  respect  to  expenses,  judgements,  fines, and amounts paid in
settlement by such individuals.

     Indemnification  under  the  ABCA  is  permissive, except in the event of a
successful  defense,  in which case a director, officer, employee, or agent must
be  indemnified against reasonable expenses, including attorneys' fees, incurred
in  connection  with  the  proceeding.  In  addition,  the ABCA requires Arizona
corporations  to  indemnify  any  "outside  director"  (a director who is not an
officer,  employee,  or  holder  of  five  percent  or  more of any class of the
corporation's  stock) against liability unless (i) the corporation's articles of
incorporation  limit such indemnification, (ii) the outside director is adjudged
liable  in  a  proceeding  by or in the right of the corporation or in any other
proceeding charging improper personal
                                      II-1
<PAGE>
benefit  to  the  director,  or  (iii) a court determines, before payment to the
outside  director,  that  the  director  failed to meet the standards of conduct
described  in the preceding paragraph. A court may also order that an individual
be  indemnified  if the court finds that the individual is fairly and reasonably
entitled  to  indemnification  in  light  of  all of the relevant circumstances,
whether  or  not the individual has met the standards of conduct in this and the
preceding paragraph.

     In  connection  with the offering made by the prospectus which is a part of
this  registration  statement,  as  it  may  be  amended  or  supplemented,  the
underwriters  of  the  Offered Securities, pursuant to the relevant underwriting
agreement,  will  severally  agree  to  indemnify and hold harmless the Company,
each  of  its  directors, each of its officers who have signed this registration
statement,  and each person, if any, who controls the Company within the meaning
of  the  Securities Act of 1933, as amended (the "Act"), against certain losses,
claims,  damages or liabilities, including liabilities under the Act, that arise
out  of  or are based upon written information furnished by such underwriters to
the Company for use in this registration statement or in such prospectus.

     Insurance  is  maintained  on  a  regular  basis  (and  not specifically in
connection  with  this  offering)  against  liabilities  arising  on the part of
directors  and  officers  out of their performance in such capacities or arising
on  the  part  of  the  Company out of its foregoing indemnification provisions,
subject to certain exclusions and to the policy limits.

Item 16. List of Exhibits.

<TABLE>
<CAPTION>
Exhibit No.                                            Description
- -----------                                            -----------
<S>             <C>
   1.1          Form of Underwriting Agreement for New Bonds.
   1.2          Form of Underwriting Agreement for Debt Securities.
   1.3          Form of Distribution Agreement for Senior Notes.
   4.1          Form(s) of Supplemental Indenture relating to New Bonds (to be filed as Exhibit(s) by
                  means of Form 8-K).
   4.2          Specimen(s) of New Bonds (to be filed as Exhibit(s) by means of Form 8-K).
   4.3          Form(s) of Supplemental Indenture relating to Offered Debt Securities (to be filed as
                  Exhibit(s) by means of Form 8-K).
   4.4          Specimen(s) of Offered Debt Securities (to be filed as Exhibit (s) by means of Form 8-K).
   4.5          Form(s) of Supplemental Indenture relating to Offered Senior Notes (to be filed as
                  Exhibit(s) by means of Form 8-K).
   4.6          Specimen(s) of Offered Senior Notes (to be filed as Exhibit(s) to Form 8-K).
   5.1          Opinion of Snell & Wilmer L.L.P.
  12.1          Computation of Ratio of Earnings to Fixed Charges.
  23.1          Consent of Deloitte & Touche LLP.
  23.2          Consent of Snell & Wilmer L.L.P. (included in Opinion filed as Exhibit No. 5.1).
  24.1          Power of Attorney (see II-6).
  25.1          Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 of The Bank of
                  New York, as Bond Trustee under the Mortgage.
  25.2          Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 of The Bank of
                  New York, as Trustee under the Indenture relating to the subordinated Debt
                  Securities.
  25.3          Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 of The Chase
                  Manhattan Bank, as Trustee under the Indenture relating to the senior Debt
                  Securities.
  25.4          Form T-1 Statement of Eligibility under Trust Indenture Act of 1939 of The Bank of New
                  York, as Trustee under the Indenture relating to the Senior Notes.
</TABLE>
                                      II-2
<PAGE>
     In  addition to those Exhibits shown above, the Company hereby incorporates
the  following  Exhibits  pursuant to Rule 411 of Regulation C promulgated under
the Securities Act of 1933 by reference to the filings set forth below:

<TABLE>
<CAPTION>
Exhibit                                                 Previously Filed                             Date
 No.                  Description                          as Exhibit:                File No.     Effective
 ---                  -----------                          -----------                --------     ---------
<S>         <C>                                  <C>                                   <C>          <C>
 4.7        Mortgage and Deed of Trust           4.1 to September 1992 Form            1-4473         11-9-92
              relating to Company's First          10-Q Report
              Mortgage Bonds, together with
              forty-eight indentures
              supplemental thereto.
            Forty-ninth Supplemental             4.1 to 1992 Form 10-K Report          1-4473         3-30-93
              Indenture.
            Fiftieth Supplemental Indenture.     4.2 to 1993 Form 10-K Report          1-4473         3-30-94
            Fifty-first Supplemental             4.1 to August 1, 1993 Form 8-K        1-4473         9-27-93
              Indenture.                           Report
            Fifty-second Supplemental            4.1 to September 30, 1993 Form        1-4473        11-15-93
              Indenture.                           10-Q Report
            Fifty-third Supplemental             4.5 to Registration Statement No.     1-4473         3-1-94
              Indenture.                           33-61228 by means of Febru-
                                                   ary 23, 1994 Form 8-K Report
            Fifty-fourth Supplemental            4.1 to Registration Statements        1-4473        11-22-96
              Indenture.                           Nos. 33-61228, 33-55473,
                                                   33-64455 and 333-15379 by
                                                   means of November 19, 1996
                                                   Form 8-K Report
            Fifty-fifth Supplemental             4.8 to Registration Statements        1-4473         4-9-97
              Indenture.                           Nos. 33-55473, 33-64455 and
                                                   333-15379 by means of April
                                                   7, 1997 Form 8-K Report
 4.8        Agreement of Resignation,            4.1 to September 29, 1995 Form        1-4473        10-24-95
              Appointment, Acceptance,             8-K Report
              and Assignment dated as of
              August 18, 1995 among the
              Company, Bank of America
              National Trust and Savings
              Association and The Bank of
              New York.
 4.9        Indenture dated as of January 1,     4.6 to January 1, 1995 Form 8-K       1-4473         1-11-95
              1995 among the Company and           Report
              The Bank of New York, as
              Trustee, relating to subordi-
              nated Debt Securities.
 4.10       First Supplemental Indenture         4.4 to January 1, 1995 Form 8-K       1-4473         1-11-95
              dated as of January 1, 1995,         Report
              relating to the issuance of
              $75,000,000 of 10% Junior
              Subordinated Deferrable
              Interest Debentures, Series A,
              Due 2025.
 4.11       Indenture dated as of November       4.5 to Registration Statements        1-4473        11-22-96
              15, 1996 among the Company           Nos. 33-61228, 33-55473,
              and The Bank of New York, as         33-64455 and 333-15379 by
              Trustee, relating to Senior          means of November 19, 1996
              Notes.                               Form 8-K Report
</TABLE>
                                      II-3
<PAGE>
<TABLE>
<CAPTION>
Exhibit                                                 Previously Filed                             Date
 No.                  Description                          as Exhibit:                File No.     Effective
 ---                  -----------                          -----------                --------     ---------
<S>         <C>                                  <C>                                 <C>          <C>
 4.12       First Supplemental Indenture,        4.6 to Registration Statements      1-4473        11-22-96
              dated as of November 15,             Nos. 33-61228, 33-55473,
              1996, relating to the issuance       33-64455 and 333-15379 by
              of $100,000,000 of 6 3/4% Senior     means of November 19, 1996
              Notes Due 2006.                      Form 8-K Report
 4.13       Second Supplemental Indenture,       4.10 to Registration Statements     1-4473         4-9-97
              dated as of April 1, 1997,           Nos. 33-55473, 33-64455 and
              relating to the issuance of          333-15379 by means of April
              $50,000,000 of 6.72% Senior          7, 1997 Form 8-K Report
              Notes due 1999.
 4.14       Indenture dated as of January        4.10 to Registration Statement      1-4473         1-16-98
              15, 1998 among the Company           Nos. 333-15379 and 333-
              and The Chase Manhattan              27551 by means of January
              Bank, as Trustee, relating to        13, 1998 Form 8-K Report
              Senior Debt Securities.
 4.15       First Supplemental Indenture         4.3 to Registration Statement       1-4473         1-16-98
              dated as of January 15, 1998,        Nos. 333-15379 and 333-
              relating to the issuance of          27551 by means of January
              $100,000,000 of 6 1/4% Notes         13, 1998 Form 8-K Report
              Due 2005.
</TABLE>

Item 17. Undertakings.

   The undersigned registrant hereby undertakes:

       (1) To  file,  during any period in which offers or sales are being made,
   a post-effective amendment to this registration statement:

       (i)  to  include  any  prospectus  required  by  Section  10(a)(3) of the
   Securities Act of 1933;

       (ii)  to  reflect in the prospectus any facts or events arising after the
   effective   date   of   the   registration  statement  (or  the  most  recent
   post-effective  amendment  thereof)  which, individually or in the aggregate,
   represent   a  fundamental  change  in  the  information  set  forth  in  the
   registration  statement;  notwithstanding  the  foregoing,  any  increase  or
   decrease  in  the  volume of securities offered (if the total dollar value of
   securities  offered  would  not  exceed  that  which  was registered) and any
   deviation  from  the  low or high end of the estimated maximum offering range
   may  be  reflected  in  the  form  of  prospectus  filed  with the Commission
   pursuant  to  Rule  424(b)  if,  in  the aggregate, the changes in volume and
   price  represent  no  more  than a 20 percent change in the maximum aggregate
   offering  price  set  forth in the "Calculation of Registration Fee" table in
   the effective registration statement; and

       (iii)  to  include  any  material information with respect to the plan of
   distribution  not  previously  disclosed in the registration statement or any
   material change to such information in the registration statement;

       provided  however, that paragraphs (1)(i) and (1)(ii) do not apply if the
   information  required  to  be included in a post-effective amendment by those
   paragraphs   is  contained  in  periodic  reports  filed  by  the  registrant
   pursuant  to  Section  13  or Section 15(d) of the Securities Exchange Act of
   1934 that are incorporated by reference in the registration statement.
   
       (2) That,  for the purpose of  determining  any liability  under the Act,
   each such  post-effective  amendment shall be deemed to be a new registration
   statement  relating to the securities  offered  therein,  and the offering of
   such  securities  at that time  shall be deemed to be the  initial  bona fide
   offering thereof.

       (3) To remove from  registration by means of a  post-effective  amendment
   any of the securities being registered which remain unsold at the termination
   of the offering.

       (4) That, for purposes of determining  any liability  under the Act, each
   filing of the registrant's annual report pursuant to Section 13(a) or Section
   15(d) of the Securities  Exchange Act of 1934 (and,  where  applicable,  each
   filing of an employee  benefit plan's annual report pursuant to Section 15(d)
   of the Securities  Exchange Act of 1934) that is incorporated by reference in
   the registration
                                      II-4
<PAGE>
   statement  shall  be  deemed  to  be a new registration statement relating to
   the  securities  offered  herein, and the offering of such securities at that
   time shall be deemed to be the initial bona fide offering thereof.

       (5) That,  insofar as indemnification  for liabilities  arising under the
   Securities  Act  of  1933  may  be  permitted  to  directors,  officers,  and
   controlling  persons of the registrant pursuant to the provisions referred to
   in Item 15 of this Registration Statement, or otherwise, the Company has been
   advised that, in the opinion of the Securities and Exchange Commission,  such
   indemnification  is against  public  policy as  expressed  in the Act and is,
   therefore,  unenforceable.  In the  event  that a claim  for  indemnification
   against  such  liabilities  (other  than the  payment  by the  registrant  of
   expenses incurred or paid by a director,  officer,  or controlling  person of
   the registrant in the successful defense of any action,  suit, or proceeding)
   is asserted by such director,  officer,  or controlling  person in connection
   with the securities  being  registered,  the registrant  will,  unless in the
   opinion of its counsel the matter has been settled by controlling  precedent,
   submit to a court of  appropriate  jurisdiction  the question of whether such
   indemnification  by it is against  public  policy as expressed in the Act and
   will be governed by the final adjudication of such issue.

       (6)  That, for purposes of determining any liability under the Securities
   Act  of  1933,  the  information omitted from the form of prospectus filed as
   part   of  this  registration  statement  in  reliance  upon  Rule  430A  and
   contained  in  a  form of prospectus filed by the registrant pursuant to rule
   424(b)(1)  or  (4)  or  497(h) under the Securities Act shall be deemed to be
   part  of  this  registration  statement  as  of  the  time  it  was  declared
   effective.

       (7)  That,  for  the  purpose  of  determining  any  liability  under the
   Securities  Act  of  1933, each post-effective amendment that contains a form
   of  prospectus  shall  be  deemed to be a new registration statement relating
   to  the  securities  offered  therein, and the offering of such securities at
   that time shall be deemed to be the initial bona fide offering thereof.
                                      II-5
<PAGE>
                                   SIGNATURES

     Pursuant to the  requirements of the Securities Act of 1933, the registrant
certifies  that it has  reasonable  grounds to believe  that it meets all of the
requirements  for  filing  on Form S-3 and has  duly  caused  this  registration
statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized,  in the City of Phoenix,  State of Arizona,  on the 2nd day of July,
1998.


                                    ARIZONA PUBLIC SERVICE COMPANY


                                    By            WILLIAM J. POST
                                       ----------------------------------------
                                          (William J. Post, President and
                                             Chief Executive Officer)

     Pursuant   to  the  requirements  of  the  Securities  Act  of  1933,  this
registration  statement  has  been  signed below by the following persons in the
capacities  and  on  the  dates  indicated.  Each person whose signature appears
below  hereby  authorizes  William  J.  Post, George A. Schreiber, Jr., Chris N.
Froggatt,  and  Michael  V.  Palmeri  and each of them, as attorneys-in-fact, to
sign  in  his  or  her  name  and  behalf,  individually  and  in  each capacity
designated   below,   and  to  file  any  amendments,  including  post-effective
amendments,  to  this  registration  statement,  and  any  related  Rule  462(b)
registration statement or amendment thereto.

         Signature                          Title                     Date
         ---------                          -----                     ----

      WILLIAM J. POST            Principal Executive Officer     July 2, 1998
- ---------------------------             and Director
(William J. Post, President
and Chief Executive Officer)

  GEORGE A. SCHREIBER, JR.        Principal Accounting and       July 2, 1998
- ---------------------------           Financial Officer
 (George A. Schreiber, Jr.,             and Director
Executive Vice President and            
  Chief Financial Officer)

     O. MARK DEMICHELE                    Director               July 2, 1998
- ---------------------------
    (O. Mark DeMichele)

    MICHAEL L. GALLAGHER                  Director               July 2, 1998
- ---------------------------
   (Michael L. Gallagher)

      MARTHA O. HESSE                     Director               July 2, 1998
- ---------------------------
     (Martha O. Hesse)

      ROBERT E. KEEVER                    Director               July 2, 1998
- ---------------------------
     (Robert E. Keever)

    MARIANNE M. JENNINGS                  Director               July 2, 1998
- ---------------------------
   (Marianne M. Jennings)

     ROBERT G. MATLOCK                    Director               July 2, 1998
- ---------------------------
    (Robert G. Matlock)

     BRUCE J. NORDSTROM                   Director               July 2, 1998
- ---------------------------
    (Bruce J. Nordstrom)

     JOHN R. NORTON III                   Director               July 2, 1998
- ---------------------------
    (John R. Norton III)

      DONALD M. RILEY                     Director               July 2, 1998
- ---------------------------
     (Donald M. Riley)
                                      II-6
<PAGE>
       Signature                    Title                        Date
       ---------                    -----                        ----

 QUENTIN P. SMITH, JR.             Director                  July 2, 1998
- -----------------------
(Quentin P. Smith, Jr.)

     RICHARD SNELL                 Director                  July 2, 1998
- -----------------------
    (Richard Snell)

   DIANNE C. WALKER                Director                  July 2, 1998
- -----------------------
  (Dianne C. Walker)

 BEN F. WILLIAMS, JR.              Director                  July 2, 1998
- -----------------------
(Ben F. Williams, Jr.)
                                      II-7
<PAGE>
                                                     Registration No. 333-
================================================================================





                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

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

                                    EXHIBITS
                                       TO

                                    FORM S-3

                             REGISTRATION STATEMENT
                                     Under
                           THE SECURITIES ACT OF 1933

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


                         Arizona Public Service Company
             (Exact name of registrant as specified in its charter)



================================================================================
<PAGE>
                                INDEX TO EXHIBITS

<TABLE>
<CAPTION>
Exhibit No.                                        Description
- -----------                                        -----------
<S>             <C>
    1.1         Form of Underwriting Agreement for New Bonds.
    1.2         Form of Underwriting Agreement for Debt Securities.
    1.3         Form of Distribution Agreement for Senior Notes.
    4.1         Form(s) of Supplemental Indenture relating to New Bonds (to be filed as Exhibit(s) by
                  means of Form 8-K).
    4.2         Specimen(s) of New Bonds (to be filed as Exhibit(s) by means of Form 8-K).
    4.3         Form(s) of Supplemental Indenture relating to Offered Debt Securites (to be filed as
                  Exhibit(s) by means of Form 8-K).
    4.4         Specimen(s) of Offered Debt Securities (to be filed as Exhibit(s) by means of Form 8-K).
    4.5         Form(s) of Supplemental Indenture relating to Offered Senior Notes (to be filed as
                  Exhibit(s) by means of Form 8-K).
    4.6         Specimen(s) of Offered Senior Notes (to be filed as Exhibit(s) to Form 8-K).
    5.1         Opinion of Snell & Wilmer L.L.P.
   12.1         Computation of Ratio of Earnings to Fixed Charges.
   23.1         Consent of Deloitte & Touche L.L.P.
   23.2         Consent of Snell & Wilmer L.L.P. (included in Opinion filed as Exhibit No. 5.1).
   24.1         Power of Attorney (see II-6).
   25.1         Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 of The Bank of New
                York, as Bond Trustee under the Mortgage.
   25.2         Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 of The Bank of New
                York, as Trustee under the Indenture relating to the subordinated Debt Securities.
   25.3         Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 of The Chase
                Manhattan Bank, as Trustee under the Indenture relating to the senior Debt Securities.
   25.4         Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939 of The Bank of New
                York, as Trustee under the Indenture relating to the Senior Notes.
</TABLE>

    For a description of the Exhibits  incorporated  in this filing by reference
see page II-3.

                                   Exhibit 1.1


                         ARIZONA PUBLIC SERVICE COMPANY

                              First Mortgage Bonds


                             UNDERWRITING AGREEMENT
                             ----------------------

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



Dear Sir or Madam:

         1. Introduction. Arizona Public Service Company, an Arizona corporation
(the "Company"), proposes to issue and sell from time to time up to $400,000,000
in  aggregate  principal  amount  of its  First  Mortgage  Bonds  (the  "Bonds")
registered  under the registration  statements  referred to in Section 2(a). The
Bonds will be issued  under its  Mortgage  and Deed of Trust dated as of July 1,
1946, to The Bank of New York, as successor Trustee, as amended and supplemented
by fifty-five indentures  supplemental thereto (the "Mortgage"),  and as further
amended  and  supplemented  by one or more  additional  Supplemental  Indentures
relating to the Bonds (the  "Supplemental  Indentures") (the Mortgage as amended
and supplemented by such  Supplemental  Indentures  being sometimes  hereinafter
referred to as the "Indenture"). The Bonds will be issued in one or more series,
which series may vary as to interest rates,  maturities,  redemption provisions,
selling prices, and other terms, with all such terms for any particular issue of
the Bonds being determined at the time of sale.  Particular  issues of the Bonds
may be sold from time to time to one or more of the firms to whom this Agreement
is addressed, and to such other purchasers as the Company shall designate and as
shall  agree  in  writing  to  comply  with the  terms  and  conditions  of this
Agreement, for resale in accordance with the terms of offering determined at the
time of sale. The Bonds involved in any such offering are  hereinafter  referred
to as the  "Purchased  Bonds," the parties  that agree to purchase  the same are
hereinafter  referred to as the  "Underwriters" of such Purchased Bonds, and the
representative or  representatives  of the Underwriters,  if any, specified in a
Terms  Agreement  referred  to in Section 3 are  hereinafter  referred to as the
"Representatives."

         2.  Representations  and Warranties of the Company.  In connection with
each offering of the Purchased Bonds, the Company
<PAGE>
represents and warrants to, and agrees with, the several Underwriters that:

                  (a) A  registration  statement  (No.  333-27551)  relating  to
         $50,000,000  of  the  Bonds,  unsecured  debentures,  notes,  or  other
         evidences of indebtedness (the  "Securities"),  or the Company's senior
         notes (the "Senior Notes") and a registration  statement (No. 333-____)
         relating  to  $350,000,000  of the Bonds,  Securities  or Senior  Notes
         (including a combined  prospectus relating to up to $400,000,000 of the
         Bonds,  Securities or Senior Notes) were filed with the  Securities and
         Exchange Commission (the "Commission") and have become effective.  Such
         registration  statements,  as each is  amended at the time of the Terms
         Agreement referred to in Section 3 relating to the Purchased Bonds, are
         hereinafter  referred to as the "First Registration  Statement" and the
         "Second Registration Statement,"  respectively,  and, together with any
         related Rule 462(b)  registration  statement or amendment thereto,  are
         hereinafter referred to collectively as the "Registration  Statements,"
         and such  prospectus,  as  supplemented as contemplated by Section 3 to
         reflect the terms of the Purchased Bonds and terms of offering thereof,
         including  all  material   incorporated   by  reference   therein,   is
         hereinafter referred to as the "Prospectus."

                  (b) Each part of the Registration  Statements  relating to the
         Bonds,  when such part  became  effective,  conformed  in all  material
         respects to the requirements of the Securities Act of 1933 (the "Act"),
         the Trust  Indenture  Act of 1939 (the "Trust  Indenture  Act") and the
         rules and regulations  (the "Rules and  Regulations") of the Commission
         and did not include any untrue  statement of a material fact or omit to
         state any material fact  required to be stated  therein or necessary to
         make the  statements  therein not  misleading,  and on the date of each
         Prospectus  Supplement  referred  to in  Section  3,  the  Registration
         Statements and the Prospectus will conform in all material  respects to
         the  requirements of the Act, the Trust Indenture Act and the Rules and
         Regulations,  and at such date none of such  documents will include any
         untrue  statement of a material fact or omit to state any material fact
         required  to be stated  therein  or  necessary  to make the  statements
         therein not misleading;  provided, however, that the foregoing does not
         apply to (a) statements in or omissions  from any such documents  based
         upon written  information  furnished to the Company by any  Underwriter
         specifically  for use  therein  or (b)  that  part of the  Registration
         Statements   that  consists  of  the  Statement  of   Eligibility   and
         Qualification  (Form T-1) under the Trust  Indenture Act of 1939 of The
         Bank of New York, as successor Trustee under the Mortgage.

                  (c) An order of the Arizona Corporation  Commission shall have
         been granted authorizing the execution and delivery of the Supplemental
         Indenture  relating to the Purchased Bonds and the issuance and sale of
         the Purchased Bonds on the terms and
                                       2
<PAGE>
         conditions  herein  and in  the  Prospectus  and  the  Terms  Agreement
         referred  to in  Section 3 relating  to the  Purchased  Bonds,  and the
         approval or consent of no other  public body or  authority is necessary
         to the  execution  and delivery of such  Supplemental  Indenture or the
         validity of the issuance and sale of the Purchased Bonds, except as may
         be required under state securities or blue sky laws.

                  (d) Except for property specifically excepted from the lien of
         the  Indenture  or  released  therefrom  in  accordance  with the terms
         thereof,  the  Company  has good and  marketable  title in fee  simple,
         except for items  described in (A),  (B), and (C) below,  to all of the
         real property  purported in the Indenture to be so held, good and valid
         leasehold interests in all properties  purported in the Indenture to be
         held  under  lease,  and good and valid  title to all other  properties
         described  in the  Indenture  as  subject  to the lien  thereof  (which
         property excludes (i) the combined cycle plant referred to in Note 9 of
         Notes to Financial Statements in the Company's Form 10-K Report for the
         fiscal  year ended  December  31,  1997 (the  "1997 Form 10-K  Report")
         incorporated by reference in the  Registration  Statements but includes
         the Company's  leasehold  and related  interests in that plant and (ii)
         certain leased interests in Unit 2 of the Palo Verde Nuclear Generating
         Station  referred to in Note 9 of Notes to Financial  Statements in the
         1997 Form 10-K Report),  except that the  transmission and distribution
         lines of the Company,  other than those located on land owned in fee by
         the Company,  and the property described in Section 15 of Article IV of
         the Forty-first  Supplemental Indenture,  have been installed in public
         streets or alleys and in highways under  ordinances and permits granted
         by the various  governmental bodies having  jurisdiction,  or have been
         constructed on leaseholds,  easements or  rights-of-way  granted,  with
         minor exceptions, by the apparent owners of record of the land and such
         leases,  easements,  or rights-of-way  are subject to any defects in or
         encumbrances  on the title of the respective  lessors of such leases or
         grantors of such  easements or  rights-of-way;  title to the  aforesaid
         properties  is  subject  only  to:  (A) the lien of the  Mortgage,  (B)
         Excepted Encumbrances as defined in the Mortgage,  and (C) other liens,
         encumbrances  or  defects,  none  of  which,  individually  or  in  the
         aggregate,  materially interfere with the business or operations of the
         Company (with respect to leasehold interests on the Navajo Reservation,
         this  representation  is intended and shall be  understood to mean only
         that the  Company is the owner of the rights  conferred  upon it by the
         leases from the Navajo Tribe  relating to the sites on which the Navajo
         Plant  and the Four  Corners  Plant  are  located,  and that  while the
         Company  is not  aware of the  assertion  of any claim  contesting  the
         interest of the Navajo Tribe in the lands leased,  the Company does not
         give any  representation  with  respect to the  interest  of the Navajo
         Tribe in the lands leased or with respect to the enforceability of such
         leases against the Navajo Tribe); the
                                       3
<PAGE>
         Mortgage,  subject  only  as  above  set  forth  in  this  clause,  now
         constitutes,   and  the  Mortgage  and  the   Supplemental   Indentures
         theretofore  executed,  subject only as above set forth in this clause,
         when  the  latter  shall  have  been  duly  recorded  and  filed,  will
         constitute,  together  and as a single  instrument,  a direct and valid
         first  mortgage  lien upon said  properties,  which  include all of the
         properties of the Company  (other than the classes or items of property
         expressly excepted in the Mortgage); and all properties (other than the
         classes or items of  property  expressly  excepted  in the  Mortgage or
         expressly released from the lien thereof) acquired by the Company after
         the date of the Supplemental  Indenture relating to the Purchased Bonds
         in each  county in the  States of  Arizona  and New Mexico in which the
         Mortgage and the  Supplemental  Indenture shall have been duly recorded
         and filed (and, as to which properties,  with respect to priority only,
         any  necessary   recordation   and/or  filing  has  been  accomplished,
         including  therein any necessary  descriptions of  after-acquired  real
         property  and real  property  upon which  after-acquired  fixtures  are
         affixed)  will,  upon such  acquisition,  become  subject  to the first
         mortgage lien thereof,  subject,  however, to Excepted Encumbrances and
         to  liens,  if any,  existing  or  placed  thereon  at the  time of the
         acquisition  thereof by the Company and, with respect to priority only,
         to  liens,  if  any,  existing  prior  to the  time  of  any  necessary
         recordation and/or filing by the Company.

                  (e) The Company holds such valid  franchises,  certificates of
         convenience and necessity,  licenses, and permits as are necessary with
         respect to the  maintenance  and operation of its property and business
         as now  conducted,  except that (A) the Company from time to time makes
         minor  extensions of its system prior to the time a related  franchise,
         certificate,  license,  or  permit is  procured,  (B) from time to time
         communities already being served by the Company become incorporated and
         considerable  time may  elapse  before a  franchise  is  procured,  (C)
         certain franchises may have expired prior to the renegotiation thereof,
         (D) the  Company may not have  obtained  certain  permits or  variances
         relating to the environmental requirements described in any of its Form
         10-K  Report,  its Form  10-Q  Reports,  and/or  its  Form 8-K  Reports
         incorporated by reference in the Registration  Statements,  (E) certain
         minor defects and exceptions may exist which,  individually  and in the
         aggregate,  are not deemed material,  and (F) the Company does not make
         any  representation  regarding the geographical scope of any franchise,
         certificate,  license,  or  permit  that  is  not  specific  as to  its
         geographical scope.

         3.  Purchase  and  Offering.  The  obligation  of the  Underwriters  to
purchase, and the obligation of the Company to sell, the Purchased Bonds will be
evidenced  by  an  exchange  of   facsimile   transmission   or  other   written
communications  (the "Terms  Agreement")  at the time the Company  determines to
sell the
                                       4
<PAGE>
Purchased  Bonds.  The  Terms  Agreement  shall  specify  (by  incorporation  by
reference or  otherwise)  the parties that will be  Underwriters,  the principal
amount  to be  purchased  by  each,  the  purchase  price  to  be  paid  by  the
Underwriters,  any compensation or commissions to be paid to  Underwriters,  the
offering price,  and the terms of the Purchased  Bonds not already  specified in
the  Indenture,  including,  but  not  limited  to,  interest  rates,  maturity,
redemption  provisions,  and  sinking  fund  requirements,  if  any.  The  Terms
Agreement  shall also specify (by  incorporation  by reference or otherwise) the
time and date of  delivery  and  payment  (the  "Closing  Date"),  the  place of
delivery  and payment,  and any details of the terms of offering  that should be
reflected in the prospectus supplement relating to the offering of the Purchased
Bonds (the "Prospectus Supplement"). It is understood that the Underwriters will
offer  the  Purchased  Bonds  for  sale  as set  forth  in the  Prospectus.  The
obligations of the Underwriters to purchase the Purchased Bonds shall be several
and not joint. Except as may otherwise be set forth in the Terms Agreement,  the
Purchased  Bonds  will  be in  definitive  form  and in such  denominations  and
registered in such names as the Underwriters may request.

         4.  Covenants  of the  Company.  In  connection  with each  offering of
Purchased Bonds, the Company covenants and agrees with the several  Underwriters
that:

                  (a)  The  Company   will  advise  the   Underwriters   or  the
         Representatives  promptly of any proposed  amendment or supplementation
         of the First Registration Statement, the Second Registration Statement,
         or the Prospectus. The Company will also advise the Underwriters or the
         Representatives  of the institution by the Commission of any stop order
         proceedings in respect of the First Registration Statement,  the Second
         Registration  Statement,  or of any part thereof, and will use its best
         efforts to prevent the issuance of any such stop order and to obtain as
         soon as possible its lifting, if issued.

                  (b)  If,  at  any  time  when  a  prospectus  relating  to the
         Purchased  Bonds is required to be  delivered  under the Act, any event
         occurs  as a  result  of  which  the  Prospectus  as  then  amended  or
         supplemented  would include an untrue  statement of a material fact, or
         omit to state  any  material  fact  necessary  to make  the  statements
         therein,  in the light of the circumstances under which they were made,
         not  misleading,  or if  it is  necessary  at  any  time  to  amend  or
         supplement the First Registration  Statement,  the Second  Registration
         Statement,  or the  Prospectus  to  comply  with the Act,  the  Company
         promptly  will  prepare and file with the  Commission  an  amendment or
         supplement that will correct such statement or omission or an amendment
         that will effect such compliance.

                  (c) As soon as  practicable,  but not  later  than 18  months,
         after the date of the Terms Agreement  relating to the Purchased Bonds,
         the Company will make generally available to
                                       5
<PAGE>
         its  securityholders an earning statement or statements (which need not
         be audited) covering a period of at least 12 months beginning after the
         effective date of the Second Registration Statement (as defined in Rule
         158(c)  under the Act),  which will satisfy the  provisions  of Section
         ll(a) of the Act and the rules and regulations thereunder.

                  (d)  The  Company  will  furnish  to the  Underwriters  or the
         Representatives such copies of the Registration  Statements  (including
         one copy of the Second Registration  Statement for each Representative,
         or for each  Underwriter if there are no  Representatives,  and for the
         counsel  for  the  Underwriters,  which  is  signed  and  includes  all
         exhibits),  any  related  preliminary  prospectus  supplements  and the
         Prospectus,  including all amendments or supplements to such documents,
         as may be reasonably requested.

                  (e) The Company will arrange or cooperate in arrangements  for
         the qualification of the Purchased Bonds for sale and the determination
         of  their   eligibility   for   investment   under  the  laws  of  such
         jurisdictions as the Underwriters or the Representatives  designate and
         will continue such qualifications in effect so long as required for the
         distribution  of the Purchased  Bonds,  provided that the Company shall
         not be required to qualify as a foreign  corporation  in any State,  to
         consent to service of process in any State  other than with  respect to
         claims arising out of the offering or sale of the Purchased  Bonds,  or
         to meet other requirements deemed by it to be unduly burdensome.

                  (f)  During  the  period of five  years  after the date of the
         Terms  Agreement  relating to the  Purchased  Bonds,  the Company  will
         furnish to the  Underwriters or the  Representatives  thereunder,  and,
         upon  request,  each  of  the  other  Underwriters,   (i)  as  soon  as
         practicable  after the end of each  fiscal  year,  a balance  sheet and
         statements of income and retained earnings of the Company as at the end
         of and for  such  year,  all in  reasonable  detail  and  certified  by
         independent  public  accountants,  and (ii) (A) as soon as  practicable
         after the end of each  quarterly  fiscal  period  (except  for the last
         quarterly  fiscal  period of each  fiscal  year),  a balance  sheet and
         statement  of  income  of the  Company  as at the end of and  for  such
         period, all in reasonable detail and certified by a principal financial
         or accounting officer of the Company, (B) as soon as available,  a copy
         of each report of the Company mailed by the Company to  stockholders or
         filed  with the  Commission,  and (C) from  time to  time,  such  other
         information  concerning the Company as may reasonably be requested.  So
         long as the Company has active subsidiaries,  such financial statements
         will be on a  consolidated  basis to the  extent  the  accounts  of the
         Company and its subsidiaries are consolidated.
                                       6
<PAGE>
                  (g)  The  Company  will  pay  all  expenses  incident  to  the
         performance of its obligations under this Agreement, and will reimburse
         the Underwriters for any reasonable expenses (including reasonable fees
         and  disbursements of counsel)  incurred by them in connection with the
         qualification  of the  Purchased  Bonds with respect to which the Terms
         Agreement  relating to the  Purchased  Bonds has been entered for sale,
         and the  determination of their  eligibility for investment,  under the
         laws of such jurisdictions as the  Representatives  or, if there are no
         Representatives,  the  Underwriters  designate,  and  the  printing  of
         memoranda  relating  thereto,  and for any fees  charged by  investment
         rating agencies for the rating of the Purchased Bonds.

                  (h) The  Company  will  not  offer  or sell  any of its  First
         Mortgage  Bonds for a period  beginning at the time of execution of the
         Terms  Agreement  relating  to the  Purchased  Bonds and  ending on the
         Closing Date relating thereto without prior consent of the Underwriters
         or the Representatives.

         5. Conditions of the Obligations of the  Underwriters.  The obligations
of the several  Underwriters to purchase and pay for the Purchased Bonds will be
subject to the accuracy of the representations and warranties on the part of the
Company  herein,  to the accuracy of the  statements  of Company  officers  made
pursuant to the  provisions  hereof,  to the  performance  by the Company of its
obligations hereunder, and to the following additional conditions precedent:

                  (a)  The  Underwriters  or  the  Representatives   shall  have
         received a letter  from  DELOITTE & TOUCHE  LLP,  dated the date of the
         Terms Agreement,  confirming that they are independent certified public
         accountants within the meaning of the Act and the applicable  published
         Rules and  Regulations  thereunder,  and  stating in effect that (i) in
         their  opinion the  financial  statements  and schedules of the Company
         examined by them and  incorporated  by  reference  in the  Registration
         Statements  comply  as to  form  in  all  material  respects  with  the
         applicable  accounting  requirements of the Securities  Exchange Act of
         1934  (the  "1934  Act")  and  the  published   Rules  and  Regulations
         thereunder  and (ii) on the basis of a reading of the latest  available
         interim financial statements of the Company,  inquiries of officials of
         the Company responsible for financial and accounting matters, and other
         specified procedures,  nothing came to their attention that caused them
         to believe that (A) the unaudited financial statements  incorporated by
         reference,  if any, in the Registration  Statements do not comply as to
         form  in  all  material   respects  with  the   applicable   accounting
         requirements  of the 1934 Act and the published  Rules and  Regulations
         thereunder or are not stated on a basis  substantially  consistent with
         that of the audited financial  statements  incorporated by reference in
         the  Registration  Statements,  (B) at the  date  of  the  most  recent
         available unaudited financial statements and at a specified
                                       7
<PAGE>
         date not more than five days prior to the date of this Agreement, there
         was any increase in the amounts of common stock,  redeemable  preferred
         stock,  or  non-redeemable  preferred  stock  of  the  Company  or  any
         increase,  exceeding $10,000,000,  in long-term debt of the Company or,
         at the date of the most recent available unaudited financial statements
         there was any decrease in net assets as compared  with amounts shown in
         the most recent financial  statements  incorporated by reference in the
         Registration  Statements,  or (C) for the twelve-month  period ended at
         the date of the most recent available  unaudited  financial  statements
         there  were  any   decreases,   exceeding  3%,  as  compared  with  the
         twelve-month  period  ended at the date of the  most  recent  financial
         statements incorporated by reference in the Registration Statements, in
         the amounts of total  revenues  or net income,  except in all cases for
         increases or decreases  which result from the declaration or payment of
         dividends, or which the Registration Statements (including any material
         incorporated by reference therein) disclose have occurred or may occur,
         or which are described in such letter.

                  (b) No stop order  suspending the  effectiveness  of the First
         Registration Statement,  the Second Registration Statement, or any part
         thereof  shall have been  issued and no  proceedings  for that  purpose
         shall have been  instituted  or, to the knowledge of the Company or the
         Underwriters, shall be contemplated by the Commission.

                  (c)  Subsequent  to  the  execution  of  the  Terms  Agreement
         relating to the Purchased  Bonds, (i) there shall not have occurred any
         change,  or any  development  involving  a  prospective  change,  in or
         affecting particularly the business or properties of the Company or its
         subsidiaries  which,  in the  judgment of a majority in interest of the
         Underwriters under such Terms Agreement, including any Representatives,
         materially  impairs the investment quality of the Purchased Bonds, (ii)
         there shall not have  occurred a suspension  or material  limitation in
         trading in securities  generally on the New York Stock Exchange,  (iii)
         there  shall not have  occurred  a  general  moratorium  on  commercial
         banking  activities in New York declared by either  Federal or New York
         State  authorities,  (iv)  no  rating  of  any of  the  Company's  debt
         securities  shall have been lowered and there shall have been no public
         announcement  that  any  such  debt  securities  have  been  placed  on
         CreditWatch, Watchlist, or under any similar surveillance or review, in
         each case with negative implications,  by any recognized rating agency,
         and (v) there shall not have  occurred  any outbreak or  escalation  of
         major  hostilities  in  which  the  United  States  is  involved,   any
         declaration  of war by  Congress or any other  substantial  national or
         international  calamity or emergency  if, in the judgment of a majority
         in interest of the Underwriters  under such Terms Agreement,  including
         any  Representatives,  the  effect  of any such  outbreak,  escalation,
         declaration, calamity or emergency makes
                                       8
<PAGE>
         it impractical or inadvisable to proceed with completion of the sale of
         and payment for the Purchased Bonds.

                  (d)  The  Underwriters  or  the  Representatives   shall  have
         received an opinion of Snell & Wilmer L.L.P.,  counsel for the Company,
         dated the relevant Closing Date, to the effect that:

                           (i) The  Company  is a  corporation  duly  organized,
                  validly  existing,  and in good standing under the laws of the
                  State of Arizona and has full corporate power and authority to
                  carry on its business as presently conducted;  and the Company
                  is duly qualified as a foreign  corporation to do business and
                  is in good  standing in the States of New Mexico,  California,
                  Oregon,  Washington,  Montana  and  Wyoming,  the  only  other
                  jurisdictions   in  which  it  owns  or   leases   substantial
                  properties  or in which the conduct of its  business  requires
                  such qualification;

                           (ii) The Purchased  Bonds have been duly  authorized,
                  executed,  authenticated,  issued,  and delivered,  constitute
                  valid and legally binding  obligations of the Company entitled
                  to the benefits and security provided by the Indenture (except
                  as the same may be limited by (a) general principles of equity
                  or by  bankruptcy,  insolvency,  reorganization,  arrangement,
                  moratorium,  or other laws or equitable principles relating to
                  or affecting the enforcement of creditors' rights generally or
                  the enforcement of the security provided by the Indenture, (b)
                  the necessity  for  compliance  with the statutory  procedural
                  requirements  governing  the exercise of remedies by a secured
                  creditor,  and (c) the  qualification  that  certain  waivers,
                  procedures,  remedies,  and other  provisions of the Purchased
                  Bonds and the Indenture may be unenforceable  under or limited
                  by the law of the State of Arizona; however, such law does not
                  in such counsel's opinion  substantially prevent the practical
                  realization  of the benefits  intended by such  documents) and
                  conform to the description thereof in the Prospectus;

                           (iii)  The  Indenture   has  been  duly   authorized,
                  executed,  and delivered,  has been duly  qualified  under the
                  Trust  Indenture  Act,  and  constitutes  a valid and  binding
                  instrument  enforceable in accordance with its terms except as
                  the same may be limited by (a) general principles of equity or
                  by  bankruptcy,   insolvency,   reorganization,   arrangement,
                  moratorium,  or other laws or equitable principles relating to
                  or affecting the enforcement of creditors' rights generally or
                  the enforcement of the security provided by the Indenture, (b)
                  the necessity  for  compliance  with the statutory  procedural
                  requirements  governing  the exercise of remedies by a secured
                  creditor,  and (c) the  qualification  that  certain  waivers,
                  procedures,
                                       9
<PAGE>
                  remedies,  and other provisions of the Purchased Bonds and the
                  Indenture may be unenforceable  under or limited by the law of
                  the  State  of  Arizona;  however,  such  law does not in such
                  counsel's   opinion   substantially   prevent  the   practical
                  realization of the benefits intended by such documents;

                           (iv) Except for property  specifically  excepted from
                  the lien of the Indenture or released  therefrom in accordance
                  with the terms  thereof,  the Company has good and  marketable
                  title in fee simple,  except for items  described in (A), (B),
                  and  (C)  below,  to all of the  real  property  and  fixtures
                  thereon  purported in the Indenture to be so held and that are
                  both  located in the State of Arizona and  described  in those
                  title reports  covering at least the Saguaro,  Yucca,  Cholla,
                  Ocotillo,  West  Phoenix,  and Palo Verde plant sites that are
                  listed on an exhibit to such opinion  (the "Title  Documents")
                  (in giving such opinion, such counsel may rely solely upon the
                  Title Documents and may assume the accuracy thereof and of the
                  real  property  descriptions  contained  therein and may state
                  that no other  investigation  or  inquiry  has been  made with
                  respect thereto),  and in giving the opinions  described below
                  with respect to any liens,  defects,  and encumbrances on such
                  title to such personal property,  such counsel may assume that
                  the Company  has good and valid  title to all of the  personal
                  property  located in the State of Arizona and described in the
                  Indenture as subject to the lien thereof (which property shall
                  not include fixtures),  and such counsel may rely solely upon,
                  and assume the accuracy of, a search of the Uniform Commercial
                  Code Financing  Statements filed in the records of the Arizona
                  Secretary  of State and may assume  that there are no liens or
                  other  encumbrances  on  personal  property  (as  used  in the
                  Arizona Uniform Commercial Code) of the Company located in the
                  State of Arizona other than liens or other  encumbrances  that
                  have been  perfected  by filing with the Arizona  Secretary of
                  State  under  Arizona  Revised  Statutes   ("A.R.S.")  Section
                  47-9401.A;  such title is subject only to: (A) the lien of the
                  Mortgage,   (B)  Excepted   Encumbrances  as  defined  in  the
                  Mortgage, and (C) other liens, encumbrances,  or defects, none
                  of which,  individually or in the aggregate, in the opinion of
                  such  counsel,  materially  interfere  with  the  business  or
                  operations  of the  Company (in  determining  whether any such
                  other liens,  encumbrances,  or defects  materially  interfere
                  with the business or operations  of the Company,  such counsel
                  may rely solely upon a  certificate  of an officer or engineer
                  of the Company  which  shall be  attached to such  opinion and
                  such opinion may state that no other  investigation or inquiry
                  with respect  thereto has been made);  the  Mortgage,  subject
                  only as above set forth in this clause,  now constitutes,  and
                  the Mortgage and the
                                       10
<PAGE>
                  Supplemental Indentures theretofore executed,  subject only as
                  above set forth in this  clause,  when the  latter  shall have
                  been duly recorded and filed, will constitute, together and as
                  a single  instrument,  a direct and valid first  mortgage lien
                  upon said property; and all properties (other than the classes
                  or items of property  expressly  excepted  in the  Mortgage or
                  expressly  released  from the lien  thereof)  acquired  by the
                  Company after the date of the Supplemental  Indenture relating
                  to the Purchased  Bonds in each county in the State of Arizona
                  in which the Mortgage  and the  Supplemental  Indenture  shall
                  have been  duly  recorded  and  filed  and,  with  respect  to
                  priority  only,  any necessary  recordation  and/or filing has
                  been   accomplished    (including    therein   any   necessary
                  descriptions of after-acquired real property and real property
                  upon which  after-acquired  fixtures are affixed)  will,  upon
                  such  acquisition,  become  subject to the first mortgage lien
                  thereof,  subject,  however,  to Excepted  Encumbrances and to
                  liens,  if any,  existing or placed thereon at the time of the
                  acquisition  thereof  by the  Company  and,  with  respect  to
                  priority only, to liens, if any, existing prior to the time of
                  any necessary recordation and/or filing by the Company;

                           (v) The Company is the owner of the rights  conferred
                  upon it by the leases  from the Navajo  Tribe  relating to the
                  site on which the  Navajo  Plant is  located  and  while  such
                  counsel is not aware of the assertion of any claim  contesting
                  the  title of the  Navajo  Tribe  to the  lands  leased,  such
                  counsel  shall not be required  to express  any  opinion  with
                  respect  to the  interest  of the  Navajo  Tribe in the  lands
                  leased or with  respect to the  enforceability  of such leases
                  against the Navajo Tribe;

                           (vi)  With  certain  exceptions,   a  public  service
                  corporation is required to obtain  certificates of convenience
                  and necessity from the Arizona  Corporation  Commission  under
                  A.R.S.  Section 40-281.A for construction of its lines, plant,
                  services,  or systems, or any extensions  thereof,  within the
                  State of Arizona, and to obtain franchises or similar consents
                  or permits from counties and incorporated municipalities under
                  A.R.S. Section 40-283.A for the construction,  operation,  and
                  maintenance of transmission lines within the State of Arizona;
                  to the best of such counsel's knowledge after due inquiry, the
                  Company   holds  such  valid   franchises,   certificates   of
                  convenience and necessity,  consents,  and permits pursuant to
                  such statutory provisions as are necessary with respect to the
                  maintenance  and operation of its property and business as now
                  conducted, except that (A) the Company from time to time makes
                  minor extensions of its system prior to
                                       11
<PAGE>
                  the time a related franchise,  certificate, license, or permit
                  is procured,  (B) from time to time communities  already being
                  served by the Company  become  incorporated  and  considerable
                  time may elapse  before a franchise is  procured,  (C) certain
                  franchises  may  have  expired  prior  to  the   renegotiation
                  thereof,  (D) certain minor defects and  exceptions  may exist
                  which,  individually  and in the  aggregate,  are  not  deemed
                  material, and (E) such counsel need not be required to express
                  any opinion regarding the geographical scope of any franchise,
                  certificate, license, or permit that is not specific as to its
                  geographical scope;

                           (vii) The issuance and sale of the Purchased Bonds on
                  the terms and conditions set forth or contemplated  herein and
                  in the  Prospectus  and the Terms  Agreement  relating  to the
                  Purchased   Bonds  and  the  execution  and  delivery  of  the
                  Supplemental  Indenture  relating to the Purchased  Bonds have
                  been duly  authorized by the Arizona  Corporation  Commission,
                  said  Commission  had  jurisdiction  in the  premises,  and no
                  further  approval,  authorization,  or  consent  of any  other
                  public  board or body is  necessary  to the  validity  of such
                  issuance and sale of such Purchased Bonds or the execution and
                  delivery  of such  Supplemental  Indenture,  except  as may be
                  required under state  securities or blue sky laws, as to which
                  laws such counsel shall not be required to express an opinion;

                           (viii)  The  First  Registration  Statement  and  the
                  Second Registration  Statement have become effective under the
                  Act,  and, to the best of the  knowledge of such  counsel,  no
                  stop  order   suspending  the   effectiveness   of  the  First
                  Registration  Statement or the Second  Registration  Statement
                  has been issued and no proceedings  for that purpose have been
                  instituted or are pending or  contemplated  under the Act, and
                  each  part  of the  Registration  Statements  relating  to the
                  Bonds, when such part became effective, and the Prospectus, as
                  of the date of the Prospectus  Supplement,  and each amendment
                  or supplement  thereto,  as of their  respective  effective or
                  issue dates, complied as to form in all material respects with
                  the  requirements of the Act, the Trust Indenture Act, and the
                  published Rules and Regulations; such counsel has no reason to
                  believe  that any part of the  Registration  Statements,  when
                  such part became effective, or the Prospectus,  as of the date
                  of the  Prospectus  Supplement,  or as of the Closing Date, or
                  any amendment or supplement  thereto,  as of their  respective
                  effective or issue dates, or as of the Closing Date, contained
                  any untrue  statement  of a material  fact or omitted to state
                  any material fact  required to be stated  therein or necessary
                  to  make  the   statements   therein   not   misleading;   the
                  descriptions in
                                       12
<PAGE>
                  the Registration Statements and Prospectus of statutes,  legal
                  and   governmental   proceedings  and  contracts,   and  other
                  documents  are  accurate  and fairly  present the  information
                  required  to be shown;  and to the actual  knowledge  of those
                  persons in the lawyer group  described in such opinion,  there
                  are  no  legal  or  governmental  proceedings  required  to be
                  described  in  the  Prospectus   that  are  not  described  as
                  required,  nor  any  contracts  or  documents  of a  character
                  required to be described  in the  Registration  Statements  or
                  Prospectus  or to be filed  as  exhibits  to the  Registration
                  Statements  that are not  described  and filed as required (it
                  being  understood that such counsel need express no opinion as
                  to the financial  statements or other financial data contained
                  in the Registration Statements or the Prospectus); and

                           (ix) This Agreement and the Terms Agreement have been
                  duly authorized, executed, and delivered by the Company.

                  In giving such  opinion,  (a) Snell & Wilmer  L.L.P.  may rely
solely upon certificates of the Company as to any factual matters upon which any
such opinions are based and may rely upon the opinion of Keleher & McLeod, P.A.,
referred to below,  as to all  matters  governed by the laws of the State of New
Mexico,  but the opinion of Snell & Wilmer L.L.P.  shall state that, though they
are members of the Arizona Bar and do not hold  themselves out as experts on the
laws of the  State of New  Mexico,  they  have  made a study of the laws of such
State  insofar  as such laws are  involved  in the  conclusions  stated in their
opinion, other than such laws as relate to matters of title, and from such study
it is their opinion that such laws support such  conclusions  and that, in their
opinion,  the Underwriters and they are justified to such extent in relying upon
the opinion of Keleher & McLeod,  P.A.;  and (b) the lawyer group referred to in
such opinion will mean those lawyers in the offices of Snell & Wilmer L.L.P. who
(i) have billed any time on the  particular  transaction  to which such  opinion
relates or (ii) have  billed  more than ten hours to any  Company  matter in the
twelve-month  period  preceding  the date on which the list of such  lawyers was
compiled for purposes of inquiry pursuant to such opinion.

                  (e)  The  Underwriters  or  the  Representatives   shall  have
         received an opinion of Keleher & McLeod,  P.A.,  New Mexico counsel for
         the Company, dated the Closing Date, to the effect that:

                           (i)  The  Company  is  duly  qualified  as a  foreign
                  corporation  to do  business  and is in good  standing  in the
                  State of New Mexico and has full corporate power and authority
                  to  engage  in the State of New  Mexico  in the  business  now
                  conducted by it therein;
                                       13
<PAGE>
                           (ii) The  activities  of the  Company in the State of
                  New Mexico to date do not constitute it a "public  utility" as
                  that term is defined in the relevant  laws of the State of New
                  Mexico,  and  accordingly,  no public  utility  franchises  or
                  certificates  of convenience and necessity are necessary under
                  New Mexico law with respect to the  maintenance  and operation
                  of the Company's property and business as now conducted in the
                  State of New Mexico and no approval, authorization, or consent
                  of the New  Mexico  Public  Utility  Commission  or any  other
                  public  board or body of the State of New  Mexico is  required
                  for the issuance and sale of the Purchased  Bonds on the terms
                  and  conditions  herein  and in the  Prospectus  set  forth or
                  contemplated   or  for  the  execution  of  the   Supplemental
                  Indenture  relating to the Purchased  Bonds,  except as may be
                  required  under New Mexico state  securities or blue sky laws,
                  as to which laws such counsel shall not be required to express
                  an opinion;

                           (iii)  Assuming  that the  Company has good and valid
                  title to all of the personal  property located in the State of
                  New Mexico and  described  in the  Indenture as subject to the
                  lien  thereof  (which  property  shall not  include  fixtures)
                  ("Personal Property"),  in giving the opinions described below
                  with respect to any liens,  defects and  encumbrances  on such
                  title to such Personal Property,  such counsel may rely solely
                  upon,  and assume  the  accuracy  of, a search of the  Uniform
                  Commercial Code Financing  Statements  filed in the records of
                  the New Mexico  Secretary  of State and may assume  that there
                  are no liens or other  encumbrances  on personal  property (as
                  used in the New Mexico Uniform Commercial Code) of the Company
                  located in the State of New  Mexico  other than liens or other
                  encumbrances  that have been  perfected by filing with the New
                  Mexico Secretary of State under Section  55-9-401,  New Mexico
                  Statutes  Annotated 1978; such title to such Personal Property
                  is subject only to: (A) the lien of the Mortgage, (B) Excepted
                  Encumbrances as defined in the Mortgage,  and (C) other liens,
                  encumbrances,  or defects,  none of which,  individually or in
                  the  aggregate,  in the  opinion of such  counsel,  materially
                  interfere  with the business or  operations of the Company (in
                  determining  whether any such other  liens,  encumbrances,  or
                  defects  materially  interfere with the business or operations
                  of  the   Company,   such  counsel  may  rely  solely  upon  a
                  certificate  of an officer or engineer  of the  Company  which
                  shall be attached to such  opinion and such  opinion may state
                  that no other  investigation  or inquiry with respect  thereto
                  has been made); the Mortgage,  subject only as above set forth
                  in this  clause,  now  constitutes,  and the  Mortgage and the
                  Supplemental Indentures theretofore executed,  subject only as
                  above set forth in this clause, when the
                                       14
<PAGE>
                  latter  shall  have  been  duly   recorded  and  filed,   will
                  constitute,  together and as a single instrument, a direct and
                  valid first mortgage lien upon such Personal Property; and all
                  properties  (other  than the  classes  or  items  of  property
                  expressly  excepted in the Mortgage or expressly released from
                  the lien  thereof)  acquired by the Company  after the date of
                  the Supplemental  Indenture relating to the Purchased Bonds in
                  each  county in the State of New Mexico in which the  Mortgage
                  and the  Supplemental  Indenture shall have been duly recorded
                  and filed and,  with respect to priority  only,  any necessary
                  recordation  and/or  filing has been  accomplished  (including
                  therein any  necessary  descriptions  of  after-acquired  real
                  property and real property upon which after-acquired  fixtures
                  are affixed) will,  upon such  acquisition,  become subject to
                  the first mortgage lien thereof, subject, however, to Excepted
                  Encumbrances and to liens, if any,  existing or placed thereon
                  at the time of the  acquisition  thereof by the  Company  and,
                  with  respect to priority  only,  to liens,  if any,  existing
                  prior to the time of any necessary  recordation  and/or filing
                  by the Company; and

                           (iv) The Company is the owner of the rights conferred
                  upon it by the leases  from the Navajo  Tribe  relating to the
                  site on which the Four Corners plant is located and while such
                  counsel is not aware of the assertion of any claim  contesting
                  the  interest of the Navajo  Tribe in the lands  leased,  such
                  counsel  shall not be required  to express  any  opinion  with
                  respect  to the  interest  of the  Navajo  Tribe in the  lands
                  leased or with  respect to the  enforceability  of such leases
                  against the Navajo Tribe.

In giving such opinion, Keleher & McLeod, P.A. may rely solely upon certificates
of the Company as to any factual matters upon which any such opinions are based.

                  (f)  The  Underwriters  or  the  Representatives   shall  have
         received  from counsel for the  Underwriters  such opinion or opinions,
         dated the  Closing  Date,  with  respect  to the  incorporation  of the
         Company,   the  validity  of  the  Purchased  Bonds,  the  Registration
         Statements, the Prospectus, and other related matters as may reasonably
         be required,  and the Company shall have furnished to such counsel such
         documents as they request for the purpose of enabling them to pass upon
         such matters.  In rendering  such opinion,  such counsel may rely as to
         the  incorporation of the Company and all other matters governed by the
         laws of the States of Arizona and New Mexico upon the opinions of Snell
         & Wilmer L.L.P. and Keleher & McLeod, P.A., referred to above.

                  (g)  The  Underwriters  or  the  Representatives   shall  have
         received a certificate of the President or any Vice President
                                       15
<PAGE>
         and a principal  financial or accounting officer of the Company,  dated
         the  Closing  Date,  in  which  such  officers,  to the  best of  their
         knowledge  after  reasonable   investigation,   shall  state  that  the
         representations  and  warranties  of the Company in this  Agreement are
         true and correct, that the Company has complied with all agreements and
         satisfied all conditions on its part to be performed or satisfied at or
         prior  to  the  Closing  Date,  that  no  stop  order   suspending  the
         effectiveness  of  the  First  Registration  Statement  or  the  Second
         Registration  Statement  has been  issued and no  proceedings  for that
         purpose have been instituted or are contemplated by the Commission, and
         that, subsequent to the date of the most recent financial statements in
         the  Prospectus,  there  has been no  material  adverse  change  in the
         financial  position  or results of  operations  of the  Company and its
         subsidiaries  except as set forth or  contemplated in the Prospectus or
         as described in such certificate.

                  (h)  The  Underwriters  or  the  Representatives   shall  have
         received a letter of  DELOITTE & TOUCHE LLP,  dated the  Closing  Date,
         which meets the requirements of subsection (a) of this Section,  except
         that the specified date referred to in such  subsection  will be a date
         not more than five days prior to the Closing  Date for the  purposes of
         this subsection.

         The Company will furnish the Underwriters or the  Representatives  with
such conformed copies of such opinions, certificates,  letters, and documents as
may be reasonably requested.

         6.  Indemnification.  (a) The Company will  indemnify and hold harmless
each Underwriter and each person,  if any, who controls such Underwriter  within
the meaning of the Act against any losses, claims, damages or liabilities, joint
or several,  to which such  Underwriter  or such  controlling  person may become
subject, under the Act or otherwise, insofar as such losses, claims, damages, or
liabilities  (or actions in respect  thereof) arise out of or are based upon any
untrue  statement or alleged untrue  statement of any material fact contained in
any part of the Registration  Statements  relating to the Bonds,  when such part
became  effective,   any  preliminary   prospectus  or  preliminary   prospectus
supplement, the Prospectus, or any amendment or supplement thereto, or arise out
of or are  based  upon the  omission  or  alleged  omission  to state  therein a
material fact required to be stated  therein or necessary to make the statements
therein  not  misleading;  and will  reimburse  each  Underwriter  and each such
controlling person for any legal or other expenses  reasonably  incurred by such
Underwriter  or such  controlling  person in connection  with  investigating  or
defending any such loss, claim, damage, liability, or action; provided, however,
that the Company will not be liable in any such case to the extent that any such
loss,  claim,  damage,  or  liability  arises  out of or is based upon an untrue
statement or alleged  untrue  statement or omission or alleged  omission made in
any of such documents in reliance upon and in conformity with written
                                       16
<PAGE>
information  furnished to the Company by any  Underwriter  specifically  for use
therein. This indemnity agreement will be in addition to any liability which the
Company may otherwise have.

         (b) Each  Underwriter  will  severally  indemnify and hold harmless the
Company,  each of its  directors,  each of its  officers  who  have  signed  the
Registration  Statements,  and each  person,  if any,  who  controls the Company
within  the  meaning  of the  Act,  against  any  losses,  claims,  damages,  or
liabilities to which the Company or any such director,  officer,  or controlling
person may become subject,  under the Act or otherwise,  insofar as such losses,
claims,  damages, or liabilities (or actions in respect thereof) arise out of or
are based upon any untrue  statement or alleged untrue statement of any material
fact contained in any part of the Registration Statements relating to the Bonds,
when such part became  effective,  any  preliminary  prospectus  or  preliminary
prospectus supplement,  the Prospectus,  or any amendment or supplement thereto,
or arise out of or are based upon the omission or the alleged  omission to state
therein a material fact  required to be stated  therein or necessary to make the
statements  therein not misleading,  in each case to the extent, but only to the
extent,  that such untrue  statement or alleged untrue  statement or omission or
alleged  omission  was made in  reliance  upon and in  conformity  with  written
information  furnished to the Company by such  Underwriter  specifically for use
therein;  and will reimburse any legal or other expenses  reasonably incurred by
the Company or any such director,  officer,  or controlling person in connection
with  investigating or defending any such loss,  claim,  damage,  liability,  or
action. This indemnity agreement will be in addition to any liability which such
Underwriter may otherwise have.

         (c) Promptly after receipt by an  indemnified  party under this Section
of notice of the commencement of any action,  such indemnified  party will, if a
claim in respect thereof is to be made against the indemnifying party under this
Section,  notify the  indemnifying  party of the commencement  thereof;  but the
omission  so to notify  the  indemnifying  party  will not  relieve  it from any
liability that it may have to any  indemnified  party  otherwise than under this
Section.  In case any such action is brought against any indemnified  party, and
it notifies the indemnifying party of the commencement thereof, the indemnifying
party will be entitled  to  participate  therein  and, to the extent that it may
wish, jointly with any other indemnifying  party similarly  notified,  to assume
the defense thereof,  with counsel  satisfactory to such indemnified  party (who
shall not,  without  the  consent of the  indemnified  party,  be counsel to the
indemnifying  party),  and  after  notice  from the  indemnifying  party to such
indemnified  party  of its  election  so to  assume  the  defense  thereof,  the
indemnifying  party  will not be liable to such  indemnified  party  under  this
Section  for  any  legal  or  other  expenses   subsequently  incurred  by  such
indemnified  party in connection  with the defense thereof other than reasonable
costs of  investigation.  An  indemnifying  party  shall not be  liable  for any
settlement  of a claim or action  effected  without its written  consent,  which
shall not be unreasonably withheld.
                                       17
<PAGE>
         (d) If the indemnification  provided for in this Section is unavailable
or  insufficient  to hold  harmless an  indemnified  party for any loss,  claim,
damage, liability, or action described in subsection (a) or (b) above, then each
indemnifying  party  shall  contribute  to the  amount  paid or  payable by such
indemnified  party as a result of the  losses,  claims,  damages or  liabilities
referred to in subsection (a) or (b) above on the following  basis:  (l) if such
loss,  claim,  damage,  liability,  or action arises under subsection (a) above,
then (i) in such  proportion as is appropriate to reflect the relative  benefits
received by the Company on the one hand and the  Underwriters  on the other from
the offering of the Bonds or (ii) if the allocation provided by clause (i) above
is not permitted by applicable  law, in such  proportion  as is  appropriate  to
reflect not only the relative  benefits referred to in clause (i) above but also
the relative  fault of the Company on the one hand and the  Underwriters  on the
other in  connection  with the  statements or omissions  which  resulted in such
losses,  claims,  damages or liabilities as well as any other relevant equitable
considerations; and (2) if such loss, claim, damage, liability, or action arises
under subsection (b) above, then in such proportion as is appropriate to reflect
the relative  fault of the Company on the one hand and the  Underwriters  on the
other in  connection  with the  statements or omissions  which  resulted in such
losses,  claims,  damages or liabilities as well as any other relevant equitable
considerations.  For the  purposes of clause (1) above,  the  relative  benefits
received by the Company on the one hand and the  Underwriters on the other shall
be  deemed to be in the same  proportion  as the  total  net  proceeds  from the
offering (before deducting  expenses)  received by the Company bear to the total
underwriting  discounts and commissions  received by the  Underwriters.  For the
purposes of clauses (1) and (2) above, the relative fault shall be determined by
reference to, among other things, whether the untrue or alleged untrue statement
of a material fact or the omission or alleged  omission to state a material fact
relates to  information  supplied  by the  Company or the  Underwriters  and the
parties'  relative intent,  knowledge,  access to information and opportunity to
correct or prevent  such untrue  statement  or  omission.  The amount paid by an
indemnified  party as a result of the  losses,  claims,  damages or  liabilities
referred  to in the first  sentence  of this  subsection  (d) shall be deemed to
include any legal or other  expenses  reasonably  incurred  by such  indemnified
party in connection with investigating or defending any action or claim which is
the  subject  of  this   subsection   (d).  No  person   guilty  of   fraudulent
misrepresentation  (within  the  meaning of  Section  ll(f) of the Act) shall be
entitled to  contribution  from any person who was not guilty of such fraudulent
misrepresentation.  The  Underwriters'  obligations  in this  subsection  (d) to
contribute   are  several  in  proportion  to  their   respective   underwriting
obligations and not joint.

         7. Default of Underwriters.  If any Underwriter or Underwriters default
in their obligations to purchase  Purchased Bonds pursuant to this Agreement and
the Terms Agreement and the
                                       18
<PAGE>
principal  amount  of  Purchased  Bonds  that  such  defaulting  Underwriter  or
Underwriters  agreed but failed to purchase is ten percent  (10%) or less of the
principal amount of Purchased Bonds to which such Terms Agreement  relates,  the
Underwriters or the  Representatives  may make arrangements  satisfactory to the
Company for the purchase of such Purchased Bonds by other persons, including any
of the  Underwriters,  but if no such  arrangements are made by the Closing Date
the nondefaulting  Underwriters shall be obligated  severally,  in proportion to
their  respective  commitments  hereunder  and under  such Terms  Agreement,  to
purchase the Purchased  Bonds that such  defaulting  Underwriter or Underwriters
agreed but failed to purchase. If any Underwriter or Underwriters so default and
the  aggregate  principal  amount of Purchased  Bonds with respect to which such
default  or  defaults  occur  is  more  than  the  above-described   amount  and
arrangements  satisfactory to the remaining Underwriters and the Company for the
purchase of such Purchased Bonds by other persons are not made within thirty-six
hours after such default,  the Terms Agreement will terminate  without liability
on the part of any non-defaulting Underwriter or the Company, except as provided
in Section 8. As used in this  Agreement,  the term  "Underwriter"  includes any
person  substituted for an Underwriter  under this Section.  Nothing herein will
relieve a defaulting Underwriter from liability for its default.

         8. Survival of Certain Representations and Obligations.  The respective
indemnities,  agreements,  representations,  warranties, and other statements of
the Company or its officers and of the several Underwriters set forth in or made
pursuant to this  Agreement  will remain in full force and effect  regardless of
any investigation,  or statement as to the results thereof, made by or on behalf
of any  Underwriter  or the Company or any of its  officers or  directors or any
controlling  person,  and will survive delivery of and payment for the Purchased
Bonds. If any Terms Agreement is terminated pursuant to Section 7, or if for any
reason a  purchase  pursuant  to any Terms  Agreement  is not  consummated,  the
Company shall remain responsible for the expenses to be paid or reimbursed by it
pursuant  to Section 4 and the  respective  obligations  of the  Company and the
Underwriters pursuant to Section 6 shall remain in effect.

         9. Notices.  All  communications  hereunder relating to any offering of
Purchased  Bonds will be in writing,  and, if sent to the  Underwriters,  may be
mailed, delivered, or telecopied and confirmed to the Representative first named
in the Terms Agreement  relating to such Purchased Bonds or the  Underwriters at
their  addresses  furnished  to the  Company  in  writing  for  the  purpose  of
communications; provided, however, that any notice to an Underwriter pursuant to
Section 6 will be mailed,  delivered,  or telecopied  and confirmed to each such
Underwriter  at its own  address.  All  communications  hereunder to the Company
shall be  mailed  to the  Company,  Attention:  Treasurer,  at P.O.  Box  53999,
Phoenix,  Arizona 85072-3999,  or delivered,  or telecopied and confirmed to the
Company at 400 North Fifth Street, Phoenix, Arizona 85004.
                                       19
<PAGE>
         10.  Successors.  This  Agreement  will inure to the  benefit of and be
binding  upon the  parties  hereto and such  Underwriters  as are named in Terms
Agreements  and their  respective  successors and the officers and directors and
controlling  persons referred to in Section 6, and no other person will have any
right or obligation hereunder.

         11.  Representation of Underwriters.  The Representatives,  if any, may
act for the several  Underwriters  in  connection  with any  offering to which a
Terms  Agreement may relate,  and any action under this  Agreement or such Terms
Agreement taken by the Representatives jointly or the Representative first named
in  such  Terms  Agreement  in  such  capacity  will  be  binding  upon  all the
Underwriters of Purchased Bonds to which such Terms Agreement relates.

         12.  Execution in  Counterpart.  This Agreement and any Terms Agreement
may be executed in one or more counterparts, each of which shall be deemed to be
an original,  but all such respective  counterparts shall together  constitute a
single instrument.
                                       20
<PAGE>
         If the  foregoing  is in  accordance  with  your  understanding  of our
agreement, kindly sign and return to us the enclosed duplicate hereof, whereupon
it will  become  a  binding  agreement  between  the  Company  and  the  several
Underwriters in accordance with its terms.

                                                  Very truly yours,

                                                  ARIZONA PUBLIC SERVICE COMPANY


                                                  By ___________________________
                                                     Treasurer


The foregoing Underwriting Agreement
is hereby confirmed and accepted as
of the date first above written.



By__________________________________
                                       21

                                   Exhibit 1.2


                         ARIZONA PUBLIC SERVICE COMPANY

                                   Securities


                             UNDERWRITING AGREEMENT
                             ----------------------


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



Dear Sir or Madam:

         1. Introduction. Arizona Public Service Company, an Arizona corporation
(the "Company"), proposes to issue and sell from time to time up to $400,000,000
in  aggregate  principal  amount  of its  unsecured  debentures,  notes or other
evidences of indebtedness (the  "Securities")  registered under the registration
statements  referred to in Section 2(a). The Securities will be issued under the
Indenture,  dated as of January  15,  1998,  between  the  Company and The Chase
Manhattan Bank, as Trustee,  (the  "Indenture"),  as amended and supplemented by
one or more Supplemental Indentures between the Company and the Trustee (each, a
"Supplemental  Indenture")  (the Indenture as amended and  supplemented  by such
Supplemental   Indentures  being  sometimes   hereinafter  referred  to  as  the
"Indenture").  The Securities will be issued in one or more series, which series
may  vary as to  interest  rates,  maturities,  redemption  provisions,  selling
prices,  and other terms,  with all such terms for any  particular  issue of the
Securities  being  determined  at the time of  sale.  Particular  issues  of the
Securities  may be sold  from  time to time to one or more of the  firms to whom
this Agreement is addressed,  and to such other  purchasers as the Company shall
designate and as shall agree in writing to comply with the terms and  conditions
of this  Agreement,  for  resale  in  accordance  with  the  terms  of  offering
determined at the time of sale. The Securities involved in any such offering are
hereinafter referred to as the "Purchased Securities," the party or parties that
agree to purchase the same are hereinafter  referred to as the "Underwriters" of
such Purchased  Securities,  and the  representative or  representatives  of the
Underwriters,  if any,  specified in a Terms Agreement  referred to in Section 3
are hereinafter referred to as the "Representatives."

         2.  Representations  and Warranties of the Company.  In connection with
each offering of the Purchased  Securities,  the Company represents and warrants
to, and agrees with, the Underwriters that:
<PAGE>
                  (a) A  registration  statement  (No.  333-27551)  relating  to
         $50,000,000 of the Securities,  the Company's first mortgage bonds (the
         "Bonds"),  or the  Company's  senior notes (the  "Senior  Notes") and a
         registration  statement (No.  333-____) relating to $350,000,000 of the
         Securities,  the  Bonds  or the  Senior  Notes  (including  a  combined
         prospectus  relating to up to $400,000,000 of the Securities,  Bonds or
         Senior Notes) were filed with the  Securities  and Exchange  Commission
         (the  "Commission")  and  have  become  effective.   Such  registration
         statements,  as each is  amended  at the  time of the  Terms  Agreement
         referred  to in Section 3 relating  to the  Purchased  Securities,  are
         hereinafter  referred to as the "First Registration  Statement" and the
         "Second Registration Statement,"  respectively,  and, together with any
         related  462(b)  registration   statement  or  amendment  thereto,  are
         hereinafter  referred to collectively as the "Registration  Statements"
         and such  prospectus,  as  supplemented as contemplated by Section 3 to
         reflect  the terms of the  Purchased  Securities  and terms of offering
         thereof,  including all material  incorporated by reference therein, is
         hereinafter referred to as the "Prospectus."

                  (b) Each part of the Registration  Statements  relating to the
         Securities, when such part became effective,  conformed in all material
         respects to the requirements of the Securities Act of 1933 (the "Act"),
         the Trust  Indenture  Act of 1939 (the "Trust  Indenture  Act") and the
         rules and regulations  (the "Rules and  Regulations") of the Commission
         and did not include any untrue  statement of a material fact or omit to
         state any material fact  required to be stated  therein or necessary to
         make the  statements  therein not  misleading,  and on the date of each
         Prospectus  Supplement  referred  to in  Section  3,  the  Registration
         Statements and the Prospectus will conform in all material  respects to
         the  requirements of the Act, the Trust Indenture Act and the Rules and
         Regulations,  and at such date none of such  documents will include any
         untrue  statement of a material fact or omit to state any material fact
         required  to be stated  therein  or  necessary  to make the  statements
         therein not misleading;  provided, however, that the foregoing does not
         apply to (a) statements in or omissions  from any such documents  based
         upon written  information  furnished to the Company by any  Underwriter
         specifically  for use  therein  or (b)  that  part of the  Registration
         Statements   that  consists  of  the  Statement  of   Eligibility   and
         Qualification  (Form T-1) under the Trust  Indenture Act of 1939 of The
         Chase Manhattan Bank, as Trustee under the Indenture.

                  (c) An order of the Arizona Corporation  Commission shall have
         been granted authorizing the execution and delivery of the Supplemental
         Indenture  relating to the  Purchased  Securities  and the issuance and
         sale of the Purchased Securities on the terms and conditions herein and
         in the  Prospectus  and the Terms  Agreement  referred  to in Section 3
         relating to the Purchased Securities, and the approval or
                                       2
<PAGE>
         consent  of no other  public  body or  authority  is  necessary  to the
         execution and delivery of such  Supplemental  Indenture or the validity
         of the issuance and sale of the Purchased Securities,  except as may be
         required under state securities or blue sky laws.

                  (d) The Company holds such valid  franchises,  certificates of
         convenience and necessity,  licenses, and permits as are necessary with
         respect to the  maintenance  and operation of its property and business
         as now  conducted,  except that (A) the Company from time to time makes
         minor  extensions of its system prior to the time a related  franchise,
         certificate,  license,  or  permit is  procured,  (B) from time to time
         communities already being served by the Company become incorporated and
         considerable  time may  elapse  before a  franchise  is  procured,  (C)
         certain franchises may have expired prior to the renegotiation thereof,
         (D) the  Company may not have  obtained  certain  permits or  variances
         relating to the environmental requirements described in any of its Form
         10-K  Report,  its Form  10-Q  Reports,  and/or  its  Form 8-K  Reports
         incorporated by reference in the Registration  Statements,  (E) certain
         minor defects and exceptions may exist which,  individually  and in the
         aggregate,  are not deemed material,  and (F) the Company does not make
         any  representation  regarding the geographical scope of any franchise,
         certificate,  license,  or  permit  that  is  not  specific  as to  its
         geographical scope.

         3.  Purchase  and  Offering.  The  obligation  of the  Underwriters  to
purchase,  and the obligation of the Company to sell,  the Purchased  Securities
will be  evidenced  by an exchange of facsimile  transmission  or other  written
communications  (the "Terms  Agreement")  at the time the Company  determines to
sell  the  Purchased   Securities.   The  Terms   Agreement  shall  specify  (by
incorporation  by  reference  or  otherwise)  the party or parties  that will be
Underwriters,  the principal  amount to be purchased by each, the purchase price
to be paid by the  Underwriters,  any  compensation or commissions to be paid to
Underwriters,  the offering price, and the terms of the Purchased Securities not
already  specified in the  Indenture,  including,  but not limited to,  interest
rates, maturity,  redemption provisions, and sinking fund requirements,  if any.
The Terms  Agreement  shall also  specify  (by  incorporation  by  reference  or
otherwise) the time and date of delivery and payment (the "Closing  Date"),  the
place of delivery  and  payment,  and any details of the terms of offering  that
should be reflected in the prospectus supplement relating to the offering of the
Purchased  Securities (the "Prospectus  Supplement").  It is understood that the
Underwriters  will offer the Purchased  Securities  for sale as set forth in the
Prospectus.  The  obligations  of the  Underwriters  to purchase  the  Purchased
Securities shall be several and not joint.  Except as may otherwise be set forth
in the Terms Agreement,  the Purchased Securities will be in definitive form and
in such  denominations  and  registered  in such names as the  Underwriters  may
request.
                                       3
<PAGE>
         4.  Covenants  of the  Company.  In  connection  with each  offering of
Purchased  Securities,  the  Company  covenants  and  agrees  with  the  several
Underwriters that:

                  (a)  The  Company   will  advise  the   Underwriters   or  the
         Representatives  promptly of any proposed  amendment or supplementation
         of the First Registration Statement, the Second Registration Statement,
         or the Prospectus. The Company will also advise the Underwriters or the
         Representatives  of the institution by the Commission of any stop order
         proceedings in respect of the First Registration Statement,  the Second
         Registration  Statement,  or of any part thereof, and will use its best
         efforts to prevent the issuance of any such stop order and to obtain as
         soon as possible its lifting, if issued.

                  (b)  If,  at  any  time  when  a  prospectus  relating  to the
         Purchased  Securities  is required to be  delivered  under the Act, any
         event  occurs as a result of which the  Prospectus  as then  amended or
         supplemented  would include an untrue  statement of a material fact, or
         omit to state  any  material  fact  necessary  to make  the  statements
         therein,  in the light of the circumstances under which they were made,
         not  misleading,  or if  it is  necessary  at  any  time  to  amend  or
         supplement the First Registration  Statement,  the Second  Registration
         Statement,  or the  Prospectus  to  comply  with the Act,  the  Company
         promptly  will  prepare and file with the  Commission  an  amendment or
         supplement that will correct such statement or omission or an amendment
         that will effect such compliance.

                  (c) As soon as  practicable,  but not  later  than 18  months,
         after  the  date  of the  Terms  Agreement  relating  to the  Purchased
         Securities,  the Company will make generally  available to its security
         holders an earning  statement or statements (which need not be audited)
         covering a period of at least 12 months  beginning  after the effective
         date of the Second  Registration  Statement  (as defined in Rule 158(c)
         under the Act),  which will satisfy the  provisions of Section 11(a) of
         the Act and the rules and regulations thereunder.

                  (d)  The  Company  will  furnish  to the  Underwriters  or the
         Representatives such copies of the Registration  Statements  (including
         one copy of the Second Registration  Statement for each Representative,
         or for each  Underwriter if there are no  Representatives,  and for the
         counsel  for  the  Underwriters,  which  is  signed  and  includes  all
         exhibits),  any  related  preliminary  prospectus  supplements  and the
         Prospectus,  including all amendments or supplements to such documents,
         as may be reasonably requested.

                  (e) The Company will arrange or cooperate in arrangements  for
         the  qualification  of  the  Purchased  Securities  for  sale  and  the
         determination of their eligibility for
                                       4
<PAGE>
         investment under the laws of such  jurisdictions as the Underwriters or
         the Representatives  designate and will continue such qualifications in
         effect  so  long as  required  for the  distribution  of the  Purchased
         Securities,  provided that the Company shall not be required to qualify
         as a foreign corporation in any State, to consent to service of process
         in any State  other  than with  respect  to claims  arising  out of the
         offering  or  sale  of  the  Purchased  Securities,  or to  meet  other
         requirements deemed by it to be unduly burdensome.

                  (f)  During  the  period of five  years  after the date of the
         Terms Agreement relating to the Purchased Securities,  the Company will
         furnish to the  Underwriters or the  Representatives  thereunder,  and,
         upon  request,  each  of  the  other  Underwriters,   (i)  as  soon  as
         practicable  after the end of each  fiscal  year,  a balance  sheet and
         statements of income and retained earnings of the Company as at the end
         of and for  such  year,  all in  reasonable  detail  and  certified  by
         independent  public  accountants,  and (ii) (A) as soon as  practicable
         after the end of each  quarterly  fiscal  period  (except  for the last
         quarterly  fiscal  period of each  fiscal  year),  a balance  sheet and
         statement  of  income  of the  Company  as at the end of and  for  such
         period, all in reasonable detail and certified by a principal financial
         or accounting officer of the Company, (B) as soon as available,  a copy
         of each report of the Company mailed by the Company to  stockholders or
         filed  with the  Commission,  and (C) from  time to  time,  such  other
         information  concerning the Company as may reasonably be requested.  So
         long as the Company has active subsidiaries,  such financial statements
         will be on a  consolidated  basis to the  extent  the  accounts  of the
         Company and its subsidiaries are consolidated.

                  (g)  The  Company  will  pay  all  expenses  incident  to  the
         performance of its obligations under this Agreement, and will reimburse
         the Underwriters for any reasonable expenses (including reasonable fees
         and  disbursements of counsel)  incurred by them in connection with the
         qualification  of the  Purchased  Securities  with respect to which the
         Terms Agreement  relating to the Purchased  Securities has been entered
         for sale, and the  determination  of their  eligibility for investment,
         under  the laws of such  jurisdictions  as the  Representatives  or, if
         there  are no  Representatives,  the  Underwriters  designate,  and the
         printing of  memoranda  relating  thereto,  and for any fees charged by
         investment rating agencies for the rating of the Purchased Securities.

                  (h) The  Company  will  not  offer  or sell  any  other of its
         Securities for a period beginning at the time of execution of the Terms
         Agreement  relating  to the  Purchased  Securities  and  ending  on the
         Closing Date relating  thereto without prior consent of the Underwriter
         or the Representatives.
                                       5
<PAGE>
         5. Conditions of the Obligations of the  Underwriters.  The obligations
of the  Underwriters  to purchase and pay for the Purchased  Securities  will be
subject to the accuracy of the representations and warranties on the part of the
Company  herein,  to the accuracy of the  statements  of Company  officers  made
pursuant to the  provisions  hereof,  to the  performance  by the Company of its
obligations hereunder, and to the following additional conditions precedent:

                  (a)  The  Underwriters  or  the  Representatives   shall  have
         received a letter  from  DELOITTE & TOUCHE  LLP,  dated the date of the
         Terms Agreement,  confirming that they are independent certified public
         accountants within the meaning of the Act and the applicable  published
         Rules and  Regulations  thereunder,  and  stating in effect that (i) in
         their  opinion the  financial  statements  and schedules of the Company
         audited  by them and  incorporated  by  reference  in the  Registration
         Statements  comply  as to  form  in  all  material  respects  with  the
         applicable  accounting  requirements of the Securities  Exchange Act of
         1934  (the  "1934  Act")  and  the  published   Rules  and  Regulations
         thereunder  and (ii) on the basis of a reading of the latest  available
         interim financial statements of the Company,  inquiries of officials of
         the Company responsible for financial and accounting matters, and other
         specified procedures,  nothing came to their attention that caused them
         to believe that (A) the unaudited financial statements  incorporated by
         reference,  if any, in the Registration  Statements do not comply as to
         form  in  all  material   respects  with  the   applicable   accounting
         requirements  of the 1934 Act and the published  Rules and  Regulations
         thereunder or are not stated on a basis  substantially  consistent with
         that of the audited financial  statements  incorporated by reference in
         the  Registration  Statements,  (B) at the  date  of  the  most  recent
         available  unaudited  financial  statements and at a specified date not
         more than five days prior to the date of this Agreement,  there was any
         increase in the amounts of common stock, redeemable preferred stock, or
         non-redeemable   preferred  stock  of  the  Company  or  any  increase,
         exceeding $10,000,000, in long-term debt of the Company or, at the date
         of the most recent available unaudited  financial  statements there was
         any decrease in net assets as compared  with amounts  shown in the most
         recent   financial   statements   incorporated   by  reference  in  the
         Registration  Statements,  or (C) for the twelve-month  period ended at
         the date of the most recent available  unaudited  financial  statements
         there  were  any   decreases,   exceeding  3%,  as  compared  with  the
         twelve-month  period  ended at the date of the  most  recent  financial
         statements incorporated by reference in the Registration Statements, in
         the amounts of total  revenues  or net income,  except in all cases for
         increases or decreases  which result from the declaration or payment of
         dividends, or which the Registration Statements (including any material
         incorporated by reference therein) disclose have occurred or may occur,
         or which are described in such letter.
                                       6
<PAGE>

                  (b) No stop order  suspending the  effectiveness  of the First
         Registration Statement,  the Second Registration Statement, or any part
         thereof  shall have been  issued and no  proceedings  for that  purpose
         shall have been  instituted  or, to the knowledge of the Company or the
         Underwriters, shall be contemplated by the Commission.

                  (c)  Subsequent  to  the  execution  of  the  Terms  Agreement
         relating to the Purchased Securities, (i) there shall not have occurred
         any change,  or any development  involving a prospective  change, in or
         affecting particularly the business or properties of the Company or its
         subsidiaries  which,  in the  judgment of a majority in interest of the
         Underwriters under such Terms Agreement, including any Representatives,
         materially impairs the investment quality of the Purchased  Securities,
         (ii) there shall not have occurred a suspension or material  limitation
         in  trading in  securities  generally  on the New York Stock  Exchange,
         (iii) there shall not have occurred a general  moratorium on commercial
         banking  activities in New York declared by either  Federal or New York
         State  authorities,  (iv)  no  rating  of  any of  the  Company's  debt
         securities  shall have been lowered and there shall have been no public
         announcement  that  any  such  debt  securities  have  been  placed  on
         CreditWatch, Watchlist, or under any similar surveillance or review, in
         each case with negative implications,  by any recognized rating agency,
         and (v) there shall not have  occurred  any outbreak or  escalation  of
         major  hostilities  in  which  the  United  States  is  involved,   any
         declaration  of war by  Congress or any other  substantial  national or
         international  calamity or emergency  if, in the judgment of a majority
         in interest of the Underwriters  under such Terms Agreement,  including
         any  Representatives,  the  effect  of any such  outbreak,  escalation,
         declaration,  calamity or emergency makes it impractical or inadvisable
         to proceed with completion of the sale of and payment for the Purchased
         Securities.

                  (d)  The  Underwriters  or  the  Representatives   shall  have
         received an opinion of Snell & Wilmer L.L.P.,  counsel for the Company,
         dated the relevant Closing Date, to the effect that:

                           (i) The  Company  is a  corporation  duly  organized,
                  validly  existing,  and in good standing under the laws of the
                  State of Arizona and has full corporate power and authority to
                  carry on its business as presently conducted;  and the Company
                  is duly qualified as a foreign  corporation to do business and
                  is in good  standing in the States of New Mexico,  California,
                  Oregon,  Washington,  Montana  and  Wyoming,  the  only  other
                  jurisdictions   in  which  it  owns  or   leases   substantial
                  properties  or in which the conduct of its  business  requires
                  such qualification; 
                                       7
<PAGE>
                           (ii)  The   Purchased   Securities   have  been  duly
                  authorized,  executed,  authenticated,  issued, and delivered,
                  constitute  valid  and  legally  binding  obligations  of  the
                  Company  entitled to the  benefits  provided by the  Indenture
                  (except as the same may be limited by (a)  general  principles
                  of  equity  or  by  bankruptcy,  insolvency,   reorganization,
                  arrangement, moratorium, or other laws or equitable principles
                  relating to or affecting the enforcement of creditors'  rights
                  generally  and (b) the  qualification  that  certain  waivers,
                  procedures,  remedies,  and other  provisions of the Purchased
                  Securities  and the  Indenture may be  unenforceable  under or
                  limited by the law of the State of Arizona;  however, such law
                  does not in such counsel's opinion  substantially  prevent the
                  practical   realization  of  the  benefits  intended  by  such
                  documents)  and  conform  to the  description  thereof  in the
                  Prospectus;

                           (iii)  The  Indenture   has  been  duly   authorized,
                  executed,  and delivered,  has been duly  qualified  under the
                  Trust  Indenture  Act,  and  constitutes  a valid and  binding
                  instrument  enforceable in accordance with its terms except as
                  the same may be limited by (a) general principles of equity or
                  by  bankruptcy,   insolvency,   reorganization,   arrangement,
                  moratorium,  or other laws or equitable principles relating to
                  or affecting the  enforcement of creditors'  rights  generally
                  and (b) the  qualification  that certain waivers,  procedures,
                  remedies, and other provisions of the Purchased Securities and
                  the Indenture may be unenforceable under or limited by the law
                  of the State of  Arizona;  however,  such law does not in such
                  counsel's   opinion   substantially   prevent  the   practical
                  realization of the benefits intended by such documents;

                           (iv)  With  certain  exceptions,   a  public  service
                  corporation is required to obtain  certificates of convenience
                  and necessity from the Arizona  Corporation  Commission  under
                  A.R.S.  Section 40-281.A for construction of its lines, plant,
                  services,  or systems, or any extensions  thereof,  within the
                  State of Arizona, and to obtain franchises or similar consents
                  or permits from counties and incorporated municipalities under
                  A.R.S. Section 40-283.A for the construction,  operation,  and
                  maintenance of transmission lines within the State of Arizona;
                  to the best of such counsel's knowledge after due inquiry, the
                  Company   holds  such  valid   franchises,   certificates   of
                  convenience and necessity, consents, and permits
                                       8
<PAGE>
                  pursuant to such  statutory  provisions as are necessary  with
                  respect to the  maintenance  and operation of its property and
                  business as now  conducted,  except that (A) the Company  from
                  time to time makes minor extensions of its system prior to the
                  time a related franchise,  certificate,  license, or permit is
                  procured,  (B) from  time to time  communities  already  being
                  served by the Company  become  incorporated  and  considerable
                  time may elapse  before a franchise is  procured,  (C) certain
                  franchises  may  have  expired  prior  to  the   renegotiation
                  thereof,  (D) certain minor defects and  exceptions  may exist
                  which,  individually  and in the  aggregate,  are  not  deemed
                  material, and (E) such counsel need not be required to express
                  any opinion regarding the geographical scope of any franchise,
                  certificate, license, or permit that is not specific as to its
                  geographical scope;

                           (v) The issuance and sale of the Purchased Securities
                  on the terms and conditions set forth or  contemplated  herein
                  and in the Prospectus and the Terms Agreement  relating to the
                  Purchased  Securities  and the  execution  and delivery of the
                  Supplemental  Indenture  relating to the Purchased  Securities
                  have  been  duly   authorized   by  the  Arizona   Corporation
                  Commission,  said Commission had jurisdiction in the premises,
                  and no  further  approval,  authorization,  or  consent of any
                  other  public  board or body is  necessary  to the validity of
                  such  issuance and sale of such  Purchased  Securities  or the
                  execution and delivery of such Supplemental Indenture,  except
                  as may be required under state securities or blue sky laws, as
                  to which laws such counsel shall not be required to express an
                  opinion;

                           (vi) The First Registration  Statement and the Second
                  Registration  Statement have become  effective  under the Act,
                  and, to the best of the  knowledge  of such  counsel,  no stop
                  order suspending the  effectiveness of the First  Registration
                  Statement or the Second Registration Statement has been issued
                  and no  proceedings  for that purpose have been  instituted or
                  are pending or  contemplated  under the Act,  and each part of
                  the Registration  Statements relating to the Securities,  when
                  such part became effective, and the Prospectus, as of the date
                  of the Prospectus Supplement, and each amendment or supplement
                  thereto,  as of their  respective  effective  or issue  dates,
                  complied  as  to  form  in  all  material  respects  with  the
                  requirements  of the Act,  the Trust  Indenture  Act,  and the
                  published Rules and Regulations; such counsel has
                                       9
<PAGE>
                  no  reason  to  believe  that  any  part  of the  Registration
                  Statements,   when  such  part   became   effective,   or  the
                  Prospectus, as of the date of the Prospectus Supplement, or as
                  of the Closing Date,  or any amendment or supplement  thereto,
                  as of their respective  effective or issue dates, or as of the
                  Closing  Date,  contained  any untrue  statement of a material
                  fact or  omitted to state any  material  fact  required  to be
                  stated therein or necessary to make the statements therein not
                  misleading;  the descriptions in the  Registration  Statements
                  and Prospectus of statutes, legal and governmental proceedings
                  and  contracts,  and other  documents  are accurate and fairly
                  present  the  information  required  to be  shown;  and to the
                  actual   knowledge  of  those  persons  in  the  lawyer  group
                  described in such opinion,  there are no legal or governmental
                  proceedings  required to be described in the  Prospectus  that
                  are not described as required,  nor any contracts or documents
                  of a character  required to be described  in the  Registration
                  Statements  or  Prospectus  or to be filed as  exhibits to the
                  Registration  Statements  that are not  described and filed as
                  required (it being  understood  that such counsel need express
                  no opinion as to the financial  statements or other  financial
                  data   contained  in  the   Registration   Statements  or  the
                  Prospectus); and

                           (vii) This  Agreement  and the Terms  Agreement  have
                  been duly authorized, executed, and delivered by the Company.

                  In giving such  opinion,  (a) Snell & Wilmer  L.L.P.  may rely
         solely upon  certificates of the Company as to any factual matters upon
         which any such  opinions  are based  and may rely upon the  opinion  of
         Keleher & McLeod,  P.A.,  referred to below, as to all matters governed
         by the laws of the  State of New  Mexico,  but the  opinion  of Snell &
         Wilmer L.L.P.  shall state that, though they are members of the Arizona
         Bar and do not hold  themselves out as experts on the laws of the State
         of New Mexico, they have made a study of the laws of such State insofar
         as such laws are involved in the  conclusions  stated in their opinion,
         and from such study it is their  opinion  that such laws  support  such
         conclusions and that, in their opinion,  the  Underwriters and they are
         justified  to such  extent in  relying  upon the  opinion  of Keleher &
         McLeod, P.A.; and (b) the lawyer group referred to in such opinion will
         mean those lawyers in the offices of Snell & Wilmer L.L.P. who (i) have
         billed any time on the  particular  transaction  to which such  opinion
         relates or (ii) have billed  more than ten hours to any Company  matter
         in the twelve-month period preceding the date on which the list of such
         lawyers was compiled for purposes of inquiry pursuant to such opinion.
                                       10
<PAGE>
                  (e)  The  Underwriters  or  the  Representatives   shall  have
         received an opinion of Keleher & McLeod,  P.A.,  New Mexico counsel for
         the Company, dated the Closing Date, to the effect that:

                           (i)  The  Company  is  duly  qualified  as a  foreign
                  corporation  to do  business  and is in good  standing  in the
                  State of New Mexico and has full corporate power and authority
                  to  engage  in the State of New  Mexico  in the  business  now
                  conducted by it therein; and

                           (ii) The  activities  of the  Company in the State of
                  New Mexico to date do not constitute it a "public  utility" as
                  that term is defined in the relevant  laws of the State of New
                  Mexico,  and  accordingly,  no public  utility  franchises  or
                  certificates  of convenience and necessity are necessary under
                  New Mexico law with respect to the  maintenance  and operation
                  of the Company's property and business as now conducted in the
                  State of New Mexico and no approval, authorization, or consent
                  of the New  Mexico  Public  Utility  Commission  or any  other
                  public  board or body of the State of New  Mexico is  required
                  for the issuance and sale of the  Purchased  Securities on the
                  terms and conditions herein and in the Prospectus set forth or
                  contemplated   or  for  the  execution  of  the   Supplemental
                  Indenture relating to the Purchased Securities,  except as may
                  be  required  under New Mexico  state  securities  or blue sky
                  laws,  as to which laws such counsel  shall not be required to
                  express an opinion.

         In giving such  opinion,  Keleher & McLeod,  P.A.  may rely solely upon
         certificates  of the Company as to any factual  matters  upon which any
         such opinions are based.

                  (f)  The  Underwriters  or  the  Representatives   shall  have
         received  from counsel for the  Underwriters  such opinion or opinions,
         dated the  Closing  Date,  with  respect  to the  incorporation  of the
         Company,  the validity of the Purchased  Securities,  the  Registration
         Statements, the Prospectus, and other related matters as may reasonably
         be required,  and the Company shall have furnished to such counsel such
         documents as they request for the purpose of enabling them to pass upon
         such matters.  In rendering  such opinion,  such counsel may rely as to
         the  incorporation of the Company and all other matters governed by the
         laws of the States of Arizona and New Mexico upon the opinions of Snell
         & Wilmer L.L.P. and Keleher & McLeod, P.A., referred to above.

                  (g)  The  Underwriters  or  the  Representatives   shall  have
         received a certificate of the President or any Vice President
                                       11
<PAGE>
         and a principal  financial or accounting officer of the Company,  dated
         the  Closing  Date,  in  which  such  officers,  to the  best of  their
         knowledge  after  reasonable   investigation,   shall  state  that  the
         representations  and  warranties  of the Company in this  Agreement are
         true and correct, that the Company has complied with all agreements and
         satisfied all conditions on its part to be performed or satisfied at or
         prior  to  the  Closing  Date,  that  no  stop  order   suspending  the
         effectiveness  of  the  First  Registration  Statement  or  the  Second
         Registration  Statement  has been  issued and no  proceedings  for that
         purpose have been instituted or are contemplated by the Commission, and
         that, subsequent to the date of the most recent financial statements in
         the  Prospectus,  there  has been no  material  adverse  change  in the
         financial  position  or results of  operations  of the  Company and its
         subsidiaries  except as set forth or  contemplated in the Prospectus or
         as described in such certificate.

                  (h)  The  Underwriters  or  the  Representatives   shall  have
         received a letter of  DELOITTE & TOUCHE LLP,  dated the  Closing  Date,
         which meets the requirements of subsection (a) of this Section,  except
         that the specified date referred to in such  subsection  will be a date
         not more than five days prior to the Closing  Date for the  purposes of
         this subsection.

         The Company will furnish the Underwriters or the  Representatives  with
such conformed copies of such opinions, certificates,  letters, and documents as
may be reasonably requested.

         6. Indemnification.

                  (a)  The  Company  will   indemnify  and  hold  harmless  each
         Underwriter  and each person,  if any, who  controls  such  Underwriter
         within the meaning of the Act against  any losses,  claims,  damages or
         liabilities,  joint or  several,  to  which  such  Underwriter  or such
         controlling  person may  become  subject,  under the Act or  otherwise,
         insofar as such losses, claims,  damages, or liabilities (or actions in
         respect thereof) arise out of or are based upon any untrue statement or
         alleged untrue  statement of any material fact contained in any part of
         the Registration Statements relating to the Securities,  when such part
         became effective,  any preliminary prospectus or preliminary prospectus
         supplement,  the Prospectus, or any amendment or supplement thereto, or
         arise out of or are based  upon the  omission  or alleged  omission  to
         state  therein  a  material  fact  required  to be  stated  therein  or
         necessary  to make the  statements  therein  not  misleading;  and will
         reimburse each  Underwriter  and each such  controlling  person for any
         legal or other expenses reasonably incurred by such Underwriter or such
         controlling  person in connection with  investigating  or defending any
         such loss, claim, damage, liability, or action; provided, however, that
         the Company  will not be liable in any such case to the extent that any
         such
                                       12
<PAGE>
         loss,  claim,  damage,  or liability  arises out of or is based upon an
         untrue  statement  or alleged  untrue  statement or omission or alleged
         omission  made  in  any of  such  documents  in  reliance  upon  and in
         conformity  with  written  information  furnished to the Company by any
         Underwriter specifically for use therein. This indemnity agreement will
         be in addition to any liability which the Company may otherwise have.

                  (b)  Each  Underwriter  will  severally   indemnify  and  hold
         harmless the Company,  each of its directors,  each of its officers who
         have signed the Registration  Statements,  and each person, if any, who
         controls the Company within the meaning of the Act, against any losses,
         claims,  damages,  or  liabilities  to which  the  Company  or any such
         director,  officer, or controlling person may become subject, under the
         Act  or  otherwise,   insofar  as  such  losses,  claims,  damages,  or
         liabilities  (or actions in respect  thereof) arise out of or are based
         upon any untrue  statement or alleged untrue  statement of any material
         fact contained in any part of the Registration  Statements  relating to
         the  Securities,  when  such part  became  effective,  any  preliminary
         prospectus or preliminary prospectus supplement, the Prospectus, or any
         amendment or supplement  thereto, or arise out of or are based upon the
         omission  or the  alleged  omission  to state  therein a material  fact
         required  to be stated  therein  or  necessary  to make the  statements
         therein not  misleading,  in each case to the  extent,  but only to the
         extent,  that such untrue  statement  or alleged  untrue  statement  or
         omission  or  alleged  omission  was  made  in  reliance  upon  and  in
         conformity  with written  information  furnished to the Company by such
         Underwriter  specifically for use therein; and will reimburse any legal
         or  other  expenses  reasonably  incurred  by the  Company  or any such
         director,   officer,   or   controlling   person  in  connection   with
         investigating or defending any such loss, claim, damage,  liability, or
         action.  This indemnity  agreement will be in addition to any liability
         which such Underwriter may otherwise have.

                  (c) Promptly after receipt by an indemnified  party under this
         Section of notice of the  commencement of any action,  such indemnified
         party  will,  if a claim in respect  thereof is to be made  against the
         indemnifying party under this Section, notify the indemnifying party of
         the   commencement   thereof;   but  the  omission  so  to  notify  the
         indemnifying  party will not relieve it from any liability  that it may
         have to any  indemnified  party  otherwise than under this Section.  In
         case any such action is brought against any indemnified  party,  and it
         notifies  the  indemnifying  party  of the  commencement  thereof,  the
         indemnifying party will be entitled to participate  therein and, to the
         extent  that it may wish,  jointly  with any other  indemnifying  party
         similarly  notified,  to  assume  the  defense  thereof,  with  counsel
         satisfactory  to such  indemnified  party (who shall not,  without  the
         consent of the indemnified party, be counsel to the
                                       13
<PAGE>
         indemnifying  party),  and after notice from the indemnifying  party to
         such  indemnified  party  of its  election  so to  assume  the  defense
         thereof,  the indemnifying party will not be liable to such indemnified
         party under this Section for any legal or other  expenses  subsequently
         incurred  by such  indemnified  party in  connection  with the  defense
         thereof other than reasonable costs of  investigation.  An indemnifying
         party  shall  not be  liable  for any  settlement  of a claim or action
         effected without its written  consent,  which shall not be unreasonably
         withheld.

                  (d) If the  indemnification  provided  for in this  Section is
         unavailable or insufficient  to hold harmless an indemnified  party for
         any loss, claim, damage,  liability,  or action described in subsection
         (a) or (b) above, then each indemnifying  party shall contribute to the
         amount  paid or  payable by such  indemnified  party as a result of the
         losses, claims, damages or liabilities referred to in subsection (a) or
         (b) above on the  following  basis:  (1) if such loss,  claim,  damage,
         liability,  or action arises under  subsection  (a) above,  then (i) in
         such  proportion  as is  appropriate  to reflect the relative  benefits
         received  by the  Company on the one hand and the  Underwriters  on the
         other from the  offering of the  Securities  or (ii) if the  allocation
         provided by clause (i) above is not  permitted  by  applicable  law, in
         such  proportion  as is  appropriate  to reflect not only the  relative
         benefits referred to in clause (i) above but also the relative fault of
         the  Company  on the one  hand  and the  Underwriters  on the  other in
         connection  with the  statements  or omissions  which  resulted in such
         losses,  claims,  damages or  liabilities as well as any other relevant
         equitable  considerations;   and  (2)  if  such  loss,  claim,  damage,
         liability,  or action arises under  subsection (b) above,  then in such
         proportion  as is  appropriate  to reflect  the  relative  fault of the
         Company on the one hand and the  Underwriter on the other in connection
         with the statements or omissions which resulted in such losses, claims,
         damages  or  liabilities  as  well  as  any  other  relevant  equitable
         considerations.  For the  purposes  of clause (1) above,  the  relative
         benefits  received by the Company on the one hand and the  Underwriters
         on the other shall be deemed to be in the same  proportion as the total
         net proceeds from the offering (before deducting  expenses) received by
         the Company bear to the total  underwriting  discounts and  commissions
         received by the  Underwriters.  For the purposes of clauses (1) and (2)
         above,  the relative  fault shall be  determined by reference to, among
         other  things,  whether  the untrue or alleged  untrue  statement  of a
         material  fact or the omission or alleged  omission to state a material
         fact relates to information supplied by the Company or the Underwriters
         and the parties' relative intent, knowledge,  access to information and
         opportunity  to correct or prevent  such untrue  statement or omission.
         The  amount  paid by an  indemnified  party as a result of the  losses,
         claims,  damages or  liabilities  referred to in the first  sentence of
         this
                                       14
<PAGE>
         subsection  (d) shall be deemed to include any legal or other  expenses
         reasonably  incurred  by such  indemnified  party  in  connection  with
         investigating  or defending any action or claim which is the subject of
         this subsection  (d). No person guilty of fraudulent  misrepresentation
         (within the  meaning of Section  11(f) of the Act) shall be entitled to
         contribution  from any  person  who was not  guilty of such  fraudulent
         misrepresentation. The Underwriters' obligations in this subsection (d)
         to  contribute   are  several  in   proportion   to  their   respective
         underwriting obligations and not joint.

         7. Default of Underwriters.  If any Underwriter or Underwriters default
in their obligations to purchase Purchased Securities pursuant to this Agreement
and the Terms  Agreement and the principal  amount of Purchased  Securities that
such defaulting Underwriter or Underwriters agreed but failed to purchase is ten
percent (10%) or less of the principal  amount of Purchased  Securities to which
such Terms Agreement relates,  the Underwriters or the  Representatives may make
arrangements  satisfactory  to the  Company for the  purchase of such  Purchased
Securities by other persons,  including any of the Underwriters,  but if no such
arrangements are made by the Closing Date the nondefaulting  Underwriters  shall
be obligated severally,  in proportion to their respective commitments hereunder
and under such Terms Agreement,  to purchase the Purchased  Securities that such
defaulting  Underwriter or  Underwriters  agreed but failed to purchase.  If any
Underwriter or  Underwriters  so default and the aggregate  principal  amount of
Purchased  Securities  with respect to which such  default or defaults  occur is
more  than the  above-described  amount  and  arrangements  satisfactory  to the
remaining  Underwriters  and the  Company  for the  purchase  of such  Purchased
Securities  by other  persons  are not made within  thirty-six  hours after such
default, the Terms Agreement will terminate without liability on the part of any
non-defaulting  Underwriter or the Company,  except as provided in Section 8. As
used in this Agreement,  the term "Underwriter"  includes any person substituted
for an Underwriter under this Section.  Nothing herein will relieve a defaulting
Underwriter from liability for its default.

         8. Survival of Certain Representations and Obligations.  The respective
indemnities,  agreements,  representations,  warranties, and other statements of
the  Company  or its  officers  and of the  Underwriters  set  forth  in or made
pursuant to this  Agreement  will remain in full force and effect  regardless of
any investigation,  or statement as to the results thereof, made by or on behalf
of the  Underwriters  or the Company or any of its  officers or directors or any
controlling  person,  and will survive delivery of and payment for the Purchased
Securities.  If any Terms  Agreement is terminated  pursuant to Section 7, or if
for any reason a purchase  pursuant to any Terms  Agreement is not  consummated,
the Company shall remain  responsible  for the expenses to be paid or reimbursed
by it pursuant to Section 4 and the  respective  obligations  of the Company and
the Underwriters pursuant to Section 6 shall remain in effect.
                                       15
<PAGE>
         9. Notices.  All  communications  hereunder relating to any offering of
Purchased Securities will be in writing,  and, if sent to the Underwriters,  may
be mailed,  delivered,  or telecopied and confirmed to the Representative  first
named in the  Terms  Agreement  relating  to such  Purchased  Securities  or the
Underwriters  at their  addresses  furnished  to the  Company in writing for the
purpose of communications;  provided, however, that any notice to an Underwriter
pursuant to Section 6 will be mailed,  delivered, or telecopied and confirmed to
each such Underwriter at its own address.  All  communications  hereunder to the
Company shall be mailed to the Company, Attention: Treasurer, at P.O. Box 53999,
Phoenix,  Arizona 85O72-3999,  or delivered,  or telecopied and confirmed to the
Company at 400 North Fifth Street, Phoenix, Arizona 85004.

         10.  Successors.  This  Agreement  will inure to the  benefit of and be
binding upon the parties hereto and the Underwriter or Underwriters as are named
in any Terms  Agreement  and their  respective  successors  and the officers and
directors and controlling  persons referred to in Section 6, and no other person
will have any right or obligation hereunder.

         11.  Representation of Underwriters.  The Representatives,  if any, may
act for the  Underwriters  in  connection  with  any  offering  to which a Terms
Agreement  may  relate,  and any  action  under  this  Agreement  or such  Terms
Agreement taken by the Representatives jointly or the Representative first named
in such Terms  Agreement in such capacity will be binding upon the  Underwriters
of Purchased Securities to which such Terms Agreement relates.

         12.  Execution in  Counterpart.  This Agreement and any Terms Agreement
may be executed in one or more counterparts, each of which shall be deemed to be
an original,  but all such respective  counterparts shall together  constitute a
single instrument.
                                       16
<PAGE>
         If the  foregoing  is in  accordance  with  your  understanding  of our
agreement, kindly sign and return to us the enclosed duplicate hereof, whereupon
it will become a binding  agreement  between the Company and the Underwriters in
accordance with its terms.


                                                  Very truly yours,

                                                  ARIZONA PUBLIC SERVICE COMPANY



                                                  By____________________________
                                                    Treasurer



The foregoing Underwriting Agreement
is hereby confirmed and accepted as
of the date first above written.



By__________________________________
                                       17

                                  $400,000,000

                         ARIZONA PUBLIC SERVICE COMPANY

                                Medium-Term Notes
                                -----------------



                             DISTRIBUTION AGREEMENT
                             ----------------------
                               (For Senior Notes)


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




Ladies and Gentlemen:

                  1.  Introduction.  Arizona Public Service Company,  an Arizona
corporation   (the   "Company"),   confirms  its  agreement  with  each  of  you
(individually,  a  "Distributor"  and  collectively,  the  "Distributors")  with
respect  to the  issue  and  sale  from  time  to  time  by the  Company  of its
medium-term  notes registered under the registration  statements  referred to in
Section  2(a)  and  described  in  the  combined  prospectus  relating  to  such
registration  statements  as "Senior  Notes" (any such  medium-term  notes being
hereinafter  referred to as the  "Securities,"  which  expression  shall, if the
context so admits,  include any permanent  global  Security).  Securities may be
offered and sold pursuant to Section 3 of this Agreement in an aggregate  amount
not to exceed the amount of  Registered  Securities  (as defined in Section 2(a)
hereof)  registered  pursuant  to such  registration  statements  reduced by the
aggregate amount of any other Registered Securities sold otherwise than pursuant
to  Section  3 of this  Agreement.  The  Securities  will  be  issued  under  an
Indenture,  dated as of November 15,  1996,  between the Company and The Bank of
New York,  as trustee  (the  "Trustee"),  as  amended  and  supplemented  by two
indentures supplemental thereto (the "Basic Indenture"),  and as further amended
and  supplemented by one or more  additional  Supplemental  Indentures  relating
thereto (each a "Supplemental  Indenture," and  collectively,  the "Supplemental
Indentures")  (the  Basic  Indenture,   as  amended  and  supplemented  by  such
Supplemental Indentures, is hereinafter referred to as the "Indenture"). Subject
to Article 14 of the Basic  Indenture,  prior to the Release Date (as defined in
the Basic  Indenture),  the  Securities  will be secured by the Company's  first
mortgage  bonds (the  "Senior  Note  Mortgage  Bonds")  issued  pursuant  to the
Mortgage and Deed of Trust dated as of July 1, 1946,
<PAGE>
to The Bank of New York, as successor  Trustee,  as amended and  supplemented by
fifty-five  indentures  supplemental  thereto  (the  "Basic  Mortgage"),  and as
further  amended  and  supplemented  by  one  or  more  additional  supplemental
indentures  relating  thereto  (each a  "Mortgage  Supplemental  Indenture"  and
collectively,  the "Mortgage  Supplemental  Indentures")  (the Basic Mortgage as
amended  and  supplemented  by  such  Mortgage   Supplemental   Indentures,   is
hereinafter referred to as the "Mortgage").

                  The  Securities   shall  have  the  terms   described  in  the
Prospectus referred to in Section 2(a) as it may be amended or supplemented from
time to time,  including any supplement to the  Prospectus  that sets forth only
the terms of a  particular  issue of the  Securities  (a "Pricing  Supplement").
Securities will be issued, and the terms thereof established,  from time to time
by the Company in accordance  with the Indenture and the  Procedures (as defined
in Section 3(d) hereof).

                  2.  Representations and Warranties of the Company. The Company
represents and warrants to, and agrees with, each Distributor as follows:

                  (a) A  registration  statement  (No.  333-27551)  relating  to
         $50,000,000 of the Company's  first  mortgage  bonds (the "Bonds"),  or
         unsecured  debentures,  notes or other evidences of  indebtedness  (the
         "Unsecured  Securities"),  or Securities and a  registration  statement
         (No.   333-________)  relating  to  $350,000,000  of  Bonds,  Unsecured
         Securities  or  Securities  (together,   the  "Registered  Securities")
         (including  a combined  prospectus  relating to up to  $400,000,000  of
         Bonds,  Unsecured  Securities  or  Securities),  were  filed  with  the
         Securities and Exchange  Commission (the  "Commission") and have become
         effective.  Such registration statements,  as each is amended as of the
         Closing  Date (as  defined in Section  3(e)  hereof),  are  hereinafter
         referred  to as the  "First  Registration  Statement"  and the  "Second
         Registration Statement,"  respectively,  and, together with any related
         Rule  462(b)   registration   statement  or  amendment   thereto,   are
         hereinafter referred to collectively as the "Registration  Statements,"
         and such  prospectus,  as amended or as  supplemented as of the Closing
         Date,  including all material  incorporated  by reference  therein,  is
         hereinafter  referred to as the  "Prospectus."  Any  reference  in this
         Agreement to amending or  supplementing  the Prospectus shall be deemed
         to include the filing of  materials  incorporated  by  reference in the
         Prospectus  after the Closing Date and any reference in this  Agreement
         to any  amendment or supplement  to the  Prospectus  shall be deemed to
         include any such materials  incorporated by reference in the Prospectus
         after the Closing Date.

                  (b) Each part of the Registration  Statements,  when such part
         became   effective,   conformed  in  all   material   respects  to  the
         requirements  of the  Securities  Act of 1933  (the  "Act"),  the Trust
         Indenture Act of 1939 (the "Trust  Indenture  Act"),  and the rules and
         regulations (the "Rules and Regulations") of the Commission and did not
         include any untrue  statement  of a material  fact or omit to state any
         material  fact  required to be stated  therein or necessary to make the
         statements therein not misleading,  and on the Closing Date and at each
         of the times of acceptance and of delivery  referred to in Section 6(a)
         hereof and at each of the times of amendment or supplementing  referred
         to in Section  6(b) hereof (the  Closing  Date and each such time being
         herein sometimes referred to as a "Representation Date"), the
                                       2
<PAGE>
         Registration Statements and the Prospectus will conform in all material
         respects to the  requirements  of the Act, the Trust Indenture Act, and
         the Rules and Regulations, and at such date none of such documents will
         include any untrue  statement  of a material  fact or omit to state any
         material  fact  required to be stated  therein or necessary to make the
         statements  therein  not  misleading;   provided,   however,  that  the
         foregoing  does not apply to (a)  statements  in or omissions  from any
         such documents based upon written information  furnished to the Company
         by any Distributor specifically for use therein or (b) that part of the
         Second  Registration  Statement  that  consists  of  the  Statement  of
         Eligibility and Qualification  (Form T-1) under the Trust Indenture Act
         of 1939 of The Bank of New York, as Trustee under the Basic Indenture.

                  (c) An order of the Arizona Corporation  Commission shall have
         been  granted  authorizing  (i)  the  execution  and  delivery  of  the
         Supplemental  Indenture relating to any series of Securities issued and
         sold by the Company  hereunder,  (ii) the execution and delivery of the
         Mortgage  Supplemental  Indenture,  pursuant  to which the Senior  Note
         Mortgage Bonds securing such Securities  will be issued,  and (iii) the
         issuance and sale of such Securities on the terms and conditions herein
         and in the Prospectus or in any Terms  Agreement (as defined in Section
         3(b))  relating to such  Securities,  and the approval or consent of no
         other  public body or  authority  is  necessary  to the  execution  and
         delivery  of  such  Supplemental  Indenture  or  Mortgage  Supplemental
         Indenture or the validity of the issuance and sale of such  Securities,
         except as may be required under state securities or blue sky laws.

                  (d) The Company holds such valid  franchises,  certificates of
         convenience and necessity,  licenses, and permits as are necessary with
         respect to the  maintenance  and operation of its property and business
         as now  conducted,  except that (A) the Company from time to time makes
         minor  extensions of its system prior to the time a related  franchise,
         certificate,  license,  or  permit is  procured,  (B) from time to time
         communities already being served by the Company become incorporated and
         considerable  time may  elapse  before a  franchise  is  procured,  (C)
         certain franchises may have expired prior to the renegotiation thereof,
         (D) the  Company may not have  obtained  certain  permits or  variances
         relating to the environmental requirements described in any of its Form
         10-K  Report,  its Form  10-Q  Reports,  and/or  its  Form 8-K  Reports
         incorporated by reference in the Registration  Statements,  (E) certain
         minor defects and exceptions may exist which,  individually  and in the
         aggregate,  are not deemed material,  and (F) the Company does not make
         any  representation  regarding the geographical scope of any franchise,
         certificate,  license,  or  permit  that  is  not  specific  as to  its
         geographical scope.

                  (e) The Company has been duly  incorporated and is an existing
         corporation  in good  standing  under the laws of the State of Arizona,
         with power and authority  (corporate  and other) to own its  properties
         and  conduct its  business  as  described  in the  Prospectus;  and the
         Company is duly  qualified to do business as a foreign  corporation  in
         good  standing in all other  jurisdictions  in which its  ownership  or
         lease  of  property  or the  conduct  of  its  business  requires  such
         qualification.

                  (f) Except for property specifically excepted from the lien of
         the  Mortgage  or  released  therefrom  in  accordance  with the  terms
         thereof,  the  Company  has good and  marketable  title in fee  simple,
         except for items described in (A), (B), and (C) below, to all of
                                       3
<PAGE>
         the real  property  purported in the  Mortgage to be so held,  good and
         valid leasehold  interests in all properties  purported in the Mortgage
         to be  held  under  lease,  and  good  and  valid  title  to all  other
         properties  described  in the  Mortgage as subject to the lien  thereof
         (which  property  excludes (i) the combined  cycle plant referred to in
         Note 9 of Notes to  Financial  Statements  in the  Company's  Form 10-K
         Report for the fiscal year ended December 31, 1997 (the "1997 Form 10-K
         Report")  incorporated by reference in the Registration  Statements but
         includes the Company's  leasehold  and related  interests in that plant
         and (ii) certain  leased  interests in Unit 2 of the Palo Verde Nuclear
         Generating  Station  referred  to  in  Note  9 of  Notes  to  Financial
         Statements in the 1997 Form 10-K Report),  except that the transmission
         and distribution lines of the Company, other than those located on land
         owned in fee by the Company,  and the property  described in Section 15
         of Article IV of the Forty-first Mortgage Supplemental Indenture,  have
         been  installed  in public  streets  or alleys  and in  highways  under
         ordinances  and  permits  granted by the  various  governmental  bodies
         having jurisdiction, or have been constructed on leaseholds,  easements
         or rights-of-way granted, with minor exceptions, by the apparent owners
         of record of the land and such leases,  easements, or rights-of-way are
         subject  to  any  defects  in or  encumbrances  on  the  title  of  the
         respective  lessors of such  leases or grantors  of such  easements  or
         rights-of-way;  title to the  aforesaid  properties is subject only to:
         (A) the lien of the Mortgage,  (B) Excepted  Encumbrances as defined in
         the Mortgage,  and (C) other liens,  encumbrances  or defects,  none of
         which, individually or in the aggregate,  materially interfere with the
         business  or  operations  of the  Company  (with  respect to  leasehold
         interests on the Navajo  Reservation,  this  representation is intended
         and shall be  understood  to mean only that the Company is the owner of
         the  rights  conferred  upon it by the  leases  from the  Navajo  Tribe
         relating  to the sites on which the Navajo  Plant and the Four  Corners
         Plant  are  located,  and that  while the  Company  is not aware of the
         assertion of any claim  contesting  the interest of the Navajo Tribe in
         the lands  leased,  the Company does not give any  representation  with
         respect to the interest of the Navajo Tribe in the lands leased or with
         respect to the enforceability of such leases against the Navajo Tribe);
         the  Mortgage,  subject  only as above  set forth in this  clause,  now
         constitutes,  and the Mortgage and the Mortgage Supplemental Indentures
         theretofore  executed,  subject only as above set forth in this clause,
         when  the  latter  shall  have  been  duly  recorded  and  filed,  will
         constitute,  together  and as a single  instrument,  a direct and valid
         first  mortgage  lien upon said  properties,  which  include all of the
         properties of the Company  (other than the classes or items of property
         expressly excepted in the Mortgage); and all properties (other than the
         classes or items of  property  expressly  excepted  in the  Mortgage or
         expressly released from the lien thereof) acquired by the Company after
         the date  hereof in each county in the States of Arizona and New Mexico
         in which the Mortgage and the Mortgage  Supplemental  Indentures  shall
         have been duly  recorded and filed (and, as to which  properties,  with
         respect to priority only, any necessary  recordation  and/or filing has
         been  accomplished,  including  therein any necessary  descriptions  of
         after-acquired   real   property   and   real   property   upon   which
         after-acquired  fixtures  are  affixed)  will,  upon such  acquisition,
         become subject to the first mortgage lien thereof, subject, however, to
         Excepted  Encumbrances and to liens, if any, existing or placed thereon
         at the time of the acquisition thereof by the Company and, with respect
         to priority only, to liens,  if any,  existing prior to the time of any
         necessary recordation and/or filing by the Company.
                                       4
<PAGE>
                  3.  Appointment as  Distributors;  Agreement of  Distributors;
Solicitations.

                  (a) Subject to the terms and  conditions  stated  herein,  the
         Company  hereby  appoints each of the  Distributors  as an agent of the
         Company for the purpose of soliciting  or receiving  offers to purchase
         the  Securities  from the Company by others during any Marketing  Time.
         For purposes of this  Agreement,  "Marketing  Time" shall mean any time
         when no suspension  of  solicitation  of offers to purchase  Securities
         pursuant  to Section  3(b) or  Section  4(b) shall be in effect and any
         time when  either any  Distributor  shall own any  Securities  with the
         intention  of  reselling  them or the Company has  accepted an offer to
         purchase Securities but the related settlement has not occurred.

                  So long as this Agreement  shall remain in effect with respect
         to any  Distributor,  the Company shall not, without the consent of any
         such  Distributor,  solicit or accept  offers to purchase  newly-issued
         Securities  from  the  Company   otherwise  than  through  one  of  the
         Distributors;  provided, however, that, subject to all of the terms and
         conditions of this  Agreement,  the foregoing shall not be construed to
         prevent the Company from selling at any time any  Securities  in a firm
         commitment underwriting pursuant to an underwriting agreement that does
         not provide for a continuous offering of such Securities; and provided,
         further,  that the Company  reserves the right from time to time (i) to
         purchase or sell Securities  directly from or to an investor,  and (ii)
         to accept a specific offer to purchase newly-issued Securities from the
         Company  solicited  by a dealer  other than the  Distributors  (each an
         "Other  Dealer"),  without  obtaining  the  prior  consent  of  any  of
         Distributors, provided that any Other Dealer shall agree to be bound by
         and subject to the terms and  conditions of this  Agreement  binding on
         the  Distributors  (including  the  commission  schedule  set  forth on
         Exhibit B). Each  Distributor  is  authorized to engage the services of
         any other  broker or  dealer  in  connection  with the offer or sale of
         Securities  purchased by such  Distributor  as principal  for resale to
         others  and  may  reallow  a  portion  of  the  commission,   but  such
         Distributor is not authorized to appoint sub-agents.

                  (b)  On  the  basis  of  the  representations  and  warranties
         contained  herein,  but subject to the terms and conditions  herein set
         forth,  each  Distributor  agrees,  as an agent of the Company,  to use
         reasonable best efforts when requested by the Company to solicit offers
         to purchase the  Securities  upon the terms and conditions set forth in
         the  Prospectus,  as from  time to time  amended  or  supplemented.  No
         Distributor shall have any responsibility for maintaining  records with
         respect  to the  aggregate  principal  amount of  Securities  sold,  or
         otherwise  monitoring the availability of Securities for sale under the
         Registration Statements. In connection therewith, each Distributor will
         use the  Prospectus (as amended or  supplemented  from time to time) in
         the form most recently furnished to such Distributor by the Company and
         will solicit offers to purchase the  Securities in accordance  with the
         Act, the Rules and Regulations,  and the applicable  securities laws or
         regulations  of  any  other  applicable   jurisdiction  in  which  such
         Distributor solicits offers to purchase any Securities.  In placing any
         Securities   pursuant  to  an  offer  accepted  by  the  Company,   the
         Distributor  that  solicited  or received  such offer (the  "Presenting
         Distributor")  may act as agent or purchase  such  Securities  from the
         Company as principal for resale.  Upon  acceptance by the Company of an
         offer  by  the  Presenting   Distributor  to  purchase   Securities  as
         principal,  
                                       5
<PAGE>
         the Presenting Distributor may complete a Terms Agreement substantially
         in the form of Exhibit A hereto (a "Terms  Agreement") and transmit the
         completed  Terms  Agreement  to the Company by hand or by  facsimile or
         other  similar  means  of  telecommunication.  Upon  acceptance  by the
         Company of an offer to purchase Securities,  unless the Company and the
         Presenting  Distributor  otherwise  agree in  writing,  any such  Terms
         Agreement  or  any  other   written   confirmation   or   communication
         transmitted  by the  Presenting  Distributor  to the Company or, in the
         absence  of  a  Terms  Agreement  or  other  written   confirmation  or
         communication from the Presenting Distributor,  the oral agreement with
         respect  to the  terms of the  Securities  and of their  offer and sale
         evidenced by the offer  communicated by the Presenting  Distributor and
         accepted by the Company,  in each case together with the  provisions of
         this Agreement,  shall  constitute an agreement  between the Presenting
         Distributor  and  the  Company  for  the  sale  and  purchase  of  such
         Securities  (whether  or not  any  Terms  Agreement  or  other  written
         confirmation or  communication  shall have been executed by the Company
         or the Presenting Distributor).

                  Upon  receipt of notice  from the Company as  contemplated  by
         Section 4(b) hereof, each Distributor shall suspend its solicitation of
         offers to purchase Securities until such time as the Company shall have
         furnished  it with  an  amendment  or  supplement  to the  Registration
         Statements  or the  Prospectus,  as the  case may be,  contemplated  by
         Section  4(b)  and  shall  have  advised  such  Distributor  that  such
         solicitation may be resumed.

                  The Company  reserves the right,  in its sole  discretion,  to
         suspend solicitation of offers to purchase the Securities commencing at
         any time for any  period of time or  permanently.  Upon  receipt  of at
         least  one  Business   Day's  prior   notice  from  the  Company,   the
         Distributors will forthwith suspend  solicitation of offers to purchase
         Securities  from the Company until such time as the Company has advised
         the Distributors that such solicitation may be resumed. For the purpose
         of the foregoing  sentence,  "Business  Day" shall mean any day that is
         not a Saturday or Sunday,  and that in The City of New York or Phoenix,
         Arizona  is not a day  on  which  banking  institutions  generally  are
         authorized or obligated by law or executive order to close.

                  The  Distributors are authorized to solicit offers to purchase
         Securities as described in the Prospectus,  as amended or supplemented,
         and only in a minimum  aggregate  amount of $1,000  (or the  equivalent
         thereof in one or more  currencies  or  currency  units other than U.S.
         dollars).  Each Distributor shall communicate to the Company, orally or
         in writing, each reasonable offer to purchase Securities received by it
         as agent.  The  Company  shall have the sole right to accept  offers to
         purchase the Securities  and may reject any such offer,  in whole or in
         part.  Each  Distributor  shall  have  the  right,  in  its  discretion
         reasonably  exercised,  without  notice to the  Company,  to reject any
         offer to purchase  Securities  received by it, in whole or in part, and
         any such  rejection  shall  not be  deemed a  breach  of its  agreement
         contained herein.

                  In  connection  with the  solicitation  of offers to  purchase
         Securities,  the  Distributors  are not  authorized  to  provide to any
         person any written  information  relating to the Company other than the
         Prospectus  and the documents  incorporated  by reference  therein.  No
         Security which
                                       6
<PAGE>
         the Company  has agreed to sell  pursuant  to this  Agreement  shall be
         deemed to have been  purchased  and paid for,  or sold by the  Company,
         until such Security shall have been delivered to the purchaser  thereof
         against payment by such purchaser.

                  (c)  At  the  time  of  delivery  of,  and  payment  for,  any
         Securities  sold by the Company as a result of a solicitation  made by,
         or offer to purchase  received by, a  Distributor,  acting on an agency
         basis,  the Company  agrees to pay such  Distributor  a  commission  in
         accordance with the schedule set forth in Exhibit B hereto. The Company
         agrees that each Distributor that purchases Securities as principal for
         resale shall  receive such  compensation,  in the form of a discount or
         otherwise,  as shall be  agreed to  between  such  Distributor  and the
         Company  at the time the  Company  accepts  an offer to  purchase  such
         Securities,  or, if no such  compensation is agreed to, a commission in
         accordance with Exhibit B hereto. Unless otherwise specified in a Terms
         Agreement,   a  Distributor   purchasing  Securities  may  resell  such
         Securities to other dealers on the terms set forth in, or determined as
         described in, the Prospectus  (including,  if  applicable,  the Pricing
         Supplement).

                  (d)   Administrative   procedures   respecting   the  sale  of
         Securities (the "Procedures") shall be agreed upon from time to time by
         the Distributors and the Company. The initial Procedures, which are set
         forth in  Exhibit C hereto,  shall  remain in effect  until  changed by
         agreement among the Company and the Distributors.  Each Distributor and
         the Company  agree to perform  the  respective  duties and  obligations
         specifically provided to be performed by each of them herein and in the
         Procedures.  The  Company  will  furnish  to the  Trustee a copy of the
         Procedures as from time to time in effect.

                  (e) The documents required to be delivered by Section 5 hereof
         shall be  delivered  at the  office of the  Company,  400  North  Fifth
         Street,  Phoenix,  Arizona  85004,  not later than 10:00 A.M.,  Arizona
         time,  on the date of this  Agreement  or at such  later time as may be
         mutually agreed by the Company and the Distributors,  which in no event
         shall  be  later  than the  time at  which  the  Distributors  commence
         solicitation of purchases of Securities  hereunder,  such time and date
         being herein called the "Closing Date".

                  4. Covenants of the Company.  In connection with each offering
of Securities, the Company covenants and agrees with the Distributors that:

                  (a) The Company will advise the  Distributors  promptly of any
         proposed   amendment  or  supplementation  of  the  First  Registration
         Statement,  the Second  Registration  Statement,  or the Prospectus and
         will afford the Distributors a reasonable opportunity to comment on any
         such  proposed   amendment  or  supplement   (other  than  any  Pricing
         Supplement that relates to Securities not purchased  through or by such
         Distributors).  The Company  will also advise the  Distributors  of the
         institution by the Commission of any stop order  proceedings in respect
         of the First Registration Statement, the Second Registration Statement,
         or of any part  thereof,  and will use its best  efforts to prevent the
         issuance of any such stop order and to obtain as soon as  possible  its
         lifting, if issued.
                                       7
<PAGE>
                  (b)  If,  at  any  time  when  a  prospectus  relating  to the
         Securities is required to be delivered  under the Act, any event occurs
         as a result of which the  Prospectus  as then  amended or  supplemented
         would include an untrue  statement of a material fact, or omit to state
         any material  fact  necessary to make the  statements  therein,  in the
         light of the circumstances  under which they were made, not misleading,
         or if it is  necessary  at any time to amend or  supplement  the  First
         Registration  Statement,  the  Second  Registration  Statement  or  the
         Prospectus  to comply with the Act,  the Company  promptly  will notify
         each  Distributor  to suspend  solicitation  of offers to purchase  the
         Securities  and, if the Company shall decide to amend or supplement the
         Registration Statements or Prospectus, the Company will promptly advise
         each  Distributor  by  telephone  (with  confirmation  in writing)  and
         promptly  will  prepare and file with the  Commission  an  amendment or
         supplement that will correct such statement or omission or an amendment
         that will effect such compliance; provided, however, that if during the
         period referred to above any Distributor  shall own any Securities that
         it has  purchased  from the Company as principal  with the intention of
         reselling them and the  Distributor  has held such Securities for fewer
         than  90  days  or the  Company  has  accepted  an  offer  to  purchase
         Securities  but the related  settlement  has not occurred,  the Company
         promptly  will  prepare and file with the  Commission  an  amendment or
         supplement that will correct such statement or omission or an amendment
         that will effect such compliance.

                  (c) As soon as  practicable,  but not  later  than 18  months,
         after  the  date of each  acceptance  by the  Company  of an  offer  to
         purchase  Securities   hereunder,   the  Company  will  make  generally
         available to its security  holders an earning  statement or  statements
         (which  need not be  audited)  covering  a period of at least 12 months
         beginning after the effective date of the Fourth Registration Statement
         (as  defined in Rule  158(c)  under the Act),  which will  satisfy  the
         provisions  of Section  11(a) of the Act and the rules and  regulations
         thereunder.

                  (d) The Company will furnish to the  Distributors  such copies
         of the  Registration  Statements  (including  one  copy  of the  Second
         Registration  Statement for the  Distributors,  and for the counsel for
         the  Distributors,  which is signed and  includes  all  exhibits),  any
         related   preliminary   prospectus   supplements  and  the  Prospectus,
         including all amendments or supplements  to such  documents,  as may be
         reasonably requested.

                  (e) The Company will arrange or cooperate in arrangements  for
         the  qualification of the Securities for sale and the  determination of
         their  eligibility for investment under the laws of such  jurisdictions
         as the Distributors  designate and will continue such qualifications in
         effect so long as  required  for the  distribution  of the  Securities,
         provided that the Company shall not be required to qualify as a foreign
         corporation in any State, to consent to service of process in any State
         other than with  respect to claims  arising out of the offering or sale
         of the  Securities,  or to meet other  requirements  deemed by it to be
         unduly burdensome.

                  (f) For a period  expiring  on the  earlier  of (i) five years
         after  the  applicable  Representation  Date and (ii) the last  date on
         which any Security sold pursuant to this Agreement is outstanding,  the
         Company  will  furnish to the  Distributors  thereunder  (i) as soon as
         practicable  after the end of each  fiscal  year,  a balance  sheet and
         statements of income and
                                       8
<PAGE>
         retained  earnings  of the  Company as at the end of and for such year,
         all  in  reasonable   detail  and  certified  by   independent   public
         accountants,  and (ii) (A) as soon as practicable after the end of each
         quarterly fiscal period (except for the last quarterly fiscal period of
         each  fiscal  year),  a balance  sheet and  statement  of income of the
         Company as at the end of and for such period,  all in reasonable detail
         and  certified by a principal  financial or  accounting  officer of the
         Company, (B) as soon as available, a copy of each report of the Company
         mailed by the Company to stockholders or filed with the Commission, and
         (C) from time to time, such other information concerning the Company as
         may  reasonably  be  requested.  So  long  as the  Company  has  active
         subsidiaries, such financial statements will be on a consolidated basis
         to the extent the  accounts  of the Company  and its  subsidiaries  are
         consolidated.

                  (g)  The  Company  will  pay  all  expenses  incident  to  the
         performance of its obligations under this Agreement, and will reimburse
         the Distributors for any reasonable expenses (including reasonable fees
         and  disbursements of counsel)  incurred by them in connection with the
         qualification of the Securities for sale and the determination of their
         eligibility for investment under the laws of such  jurisdictions as the
         Distributors  may  designate,  and for any fees  charged by  investment
         rating agencies for the rating of the Securities.

                  (h)  Between  the  date of a Terms  Agreement  and the date of
         delivery of  Securities  with  respect  thereto,  the Company will not,
         without the prior written consent of each Distributor  which is a party
         to such Terms Agreement,  offer or sell, or enter into any agreement to
         sell, any of its debt securities which are substantially similar to the
         Securities other than borrowings  under the Company's  revolving credit
         agreements  and lines of credit,  the private  placement of securities,
         and the issuance of commercial paper.

                  5.  Conditions  of   Obligations.   The  obligations  of  each
Distributor,  as agent  of the  Company,  under  this  Agreement  at any time to
solicit offers to purchase the Securities  and to purchase  Securities  from the
Company as principal is subject to the accuracy,  on the date hereof and on each
Representation  Date,  of the  representations  and  warranties  of the  Company
herein,  to the accuracy,  on each such date, of the statements of the Company's
officers made pursuant to the provisions hereof, to the performance, on or prior
to each such date, by the Company of its obligations  hereunder,  and to each of
the following additional conditions precedent:

                  (a) The  Prospectus,  as  amended  or  supplemented  as of any
         Representation  Date,  shall  have been filed  with the  Commission  in
         accordance with the Rules and Regulations and no stop order  suspending
         the effectiveness of the Registration Statements or of any part thereof
         shall have been issued and no  proceedings  for that purpose shall have
         been instituted or, to the knowledge of the Company or any Distributor,
         shall be contemplated by the Commission.

                  (b) Neither the Registration Statements nor the Prospectus, as
         amended or supplemented as of any  Representation  Date,  shall contain
         any untrue  statement of fact which, in the opinion of any Distributor,
         is  material  or omits to state a fact  which,  in the  opinion  of any
         Distributor,  is material  and is  required to be stated  therein or is
         necessary to make the statements therein not misleading.
                                       9
<PAGE>
                  (c)  There  shall not have  occurred  (i) any  change,  or any
         development   involving  a   prospective   change,   in  or   affecting
         particularly   the  business  or  properties  of  the  Company  or  its
         subsidiaries  which,  in the  judgment of the  Distributors  materially
         impairs the investment quality of the Securities,  (ii) a suspension or
         material limitation in trading in securities  generally on the New York
         Stock  Exchange,  (iii) a  general  moratorium  on  commercial  banking
         activities  in New York  declared  by either  Federal or New York State
         authorities, (iv) a lowering of the rating of any of the Company's debt
         securities or a public  announcement that any such debt securities have
         been   placed  on   CreditWatch,   Watchlist,   or  under  any  similar
         surveillance or review, in each case with negative implications, by any
         recognized  rating agency,  and (v) any outbreak or escalation of major
         hostilities in which the United States is involved,  any declaration of
         war by Congress  or any other  substantial  national  or  international
         calamity  or  emergency  if, in the  judgment of the  Distributors  the
         effect  of any such  outbreak,  escalation,  declaration,  calamity  or
         emergency   makes  it   impractical  or  inadvisable  to  proceed  with
         completion of the sale of and payment for the Securities.

                  (d) With  respect to any  Security  denominated  in a currency
         other  than the U.S.  dollar,  more than one  currency  or a  composite
         currency or any Security the  principal or interest of which is indexed
         to such  currency,  currencies or composite  currency,  there shall not
         have occurred a suspension or material  limitation in foreign  exchange
         trading in such currency,  currencies or composite  currency by a major
         international   bank,  a  general   moratorium  on  commercial  banking
         activities  in  the  country  or  countries   issuing  such   currency,
         currencies  of  composite  currency,  the  outbreak  or  escalation  of
         hostilities involving, the occurrence of any material adverse change in
         the existing  financial,  political or economic  conditions  of, or the
         declaration of war or a national emergency by, the country or countries
         issuing  such  currency,   currencies  or  composite  currency  or  the
         imposition  or  proposal  of  exchange  controls  by  any  governmental
         authority in the country or countries issuing such currency, currencies
         or composite currency;

                  (e)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in such Terms Agreement, the Distributors or the Distributor purchasing
         such Securities  (the  "Purchasing  Distributor"),  as the case may be,
         shall have received an opinion, dated the Closing Date, or such date of
         delivery, as the case may be, of Snell & Wilmer L.L.P., counsel for the
         Company, to the effect that:

                           (i) The  Company  is a  corporation  duly  organized,
                  validly  existing,  and in good standing under the laws of the
                  State of Arizona and has full corporate power and authority to
                  carry on its business as presently conducted;  and the Company
                  is duly qualified as a foreign  corporation to do business and
                  is in good  standing in the States of New Mexico,  California,
                  Wyoming,  Washington,  Oregon  and  Montana,  the  only  other
                  jurisdictions   in  which  it  owns  or   leases   substantial
                  properties  or in which the conduct of its  business  requires
                  such qualification;

                           (ii)  The   Indenture   has  been  duly   authorized,
                  executed,  and delivered,  has been duly  qualified  under the
                  Trust Indenture Act, and
                                       10
<PAGE>
                  constitutes  a valid and  binding  instrument  enforceable  in
                  accordance with its terms except as the same may be limited by
                  (a) general principles of equity or by bankruptcy, insolvency,
                  reorganization,  arrangement,  moratorium,  or  other  laws or
                  equitable  principles relating to or affecting the enforcement
                  of  creditors'  rights  generally  or the  enforcement  of the
                  security  provided by the  Indenture,  (b) the  necessity  for
                  compliance with the statutory  procedural rights governing the
                  exercise  of  remedies  by a  secured  creditor,  and  (c) the
                  qualification that certain waivers, procedures,  remedies, and
                  other  provisions of the  Securities  and the Indenture may be
                  unenforceable  under  or  limited  by the law of the  State of
                  Arizona;  however, such law does not in such counsel's opinion
                  substantially   prevent  the  practical   realization  of  the
                  benefits intended by such documents;

                           (iii) Any  series  of  Securities  established  on or
                  prior  to the  date of such  opinion  in  conformity  with the
                  Indenture, and, when the terms of a particular Security and of
                  its   issuance  and  sale  have  been  duly   authorized   and
                  established  by all necessary  corporate  action in conformity
                  with the Indenture, and such Security has been duly completed,
                  authenticated, and issued in accordance with the Indenture and
                  delivered  against  payment as contemplated by this Agreement,
                  such Security will  constitute a valid and binding  obligation
                  of the  Company  entitled  to  the  benefits  provided  by the
                  Indenture  (except as the same may be  limited by (a)  general
                  principles   of   equity   or   by   bankruptcy,   insolvency,
                  reorganization,  arrangement,  moratorium,  or  other  laws or
                  equitable  principles relating to or affecting the enforcement
                  of  creditors'  rights  generally  or the  enforcement  of the
                  security  provided by the  Indenture,  (b) the  necessity  for
                  compliance with the statutory  procedural rights governing the
                  exercise  of  remedies  by a  secured  creditor,  and  (c) the
                  qualification that certain waivers, procedures,  remedies, and
                  other  provisions  of such  Security and the  Indenture may be
                  unenforceable  under  or  limited  by the law of the  State of
                  Arizona;  however, such law does not in such counsel's opinion
                  substantially   prevent  the  practical   realization  of  the
                  benefits intended by such documents), it being understood that
                  such counsel may (A) assume that at the time of the  issuance,
                  sale and delivery of each Security the  authorization  of such
                  series will not have been modified or rescinded and there will
                  not have  occurred any change in law  affecting  the validity,
                  legally binding  character or enforceability of such Security,
                  (B) assume that neither the issuance, sale and delivery of any
                  Security,   nor  any  of  the  terms  of  such  Security,  nor
                  compliance  by the  Company  with such terms will  violate any
                  applicable  law, any agreement or instrument then binding upon
                  the  Company  or  any  restriction  imposed  by any  court  or
                  governmental body having jurisdiction over the Company and (C)
                  state that as of the date of such opinion a judgment for money
                  in an  action  based  on  Securities  denominated  in  foreign
                  currencies  or  currency  units in a Federal or State court in
                  the United States  ordinarily  would be enforced in the United
                  States only in United States  dollars,  and that the date used
                  to determine the rate of  conversion  of the foreign  currency
                  unit in which a particular
                                       11
<PAGE>
                  Security is denominated into United States dollars will depend
                  upon  various  factors,  including  which  court  renders  the
                  judgment;

                           (iv) The Mortgage has been duly authorized, executed,
                  and  delivered,  has  been  duly  qualified  under  the  Trust
                  Indenture Act, and constitutes a valid and binding  instrument
                  enforceable in accordance  with its terms,  except as the same
                  may be  limited  by (a)  general  principles  of  equity or by
                  bankruptcy,    insolvency,    reorganization,     arrangement,
                  moratorium,  or other laws or equitable principles relating to
                  or affecting the enforcement of creditors' rights generally or
                  the enforcement of the security provided by the Mortgage,  (b)
                  the necessity  for  compliance  with the statutory  procedural
                  rights  governing  the  exercise  of  remedies  by  a  secured
                  creditor,  and (c) the  qualification  that  certain  waivers,
                  procedures,  remedies, and other provisions of the Senior Note
                  Mortgage Bonds and the Mortgage may be unenforceable  under or
                  limited by the law of the State of Arizona;  however, such law
                  does not in such counsel's opinion  substantially  prevent the
                  practical   realization  of  the  benefits  intended  by  such
                  document;

                           (v)  Any  series  of  Senior  Note   Mortgage   Bonds
                  established  on or  prior  to the  date  of  such  opinion  in
                  conformity with the Indenture and the Mortgage,  and, when the
                  terms of a  particular  Senior Note  Mortgage  Bond and of its
                  issuance and sale have been duly authorized and established by
                  all  necessary   corporate   action  in  conformity  with  the
                  Indenture and the Mortgage, and such Senior Note Mortgage Bond
                  has  been  duly  completed,   authenticated,   and  issued  in
                  accordance  with the Mortgage and  delivered to the Trustee as
                  security for  Securities,  such Senior Note Mortgage Bond will
                  constitute  a valid  and  binding  obligation  of the  Company
                  entitled to the benefits  provided by the Mortgage  (except as
                  the same may be limited by (a) general principles of equity or
                  by  bankruptcy,   insolvency,   reorganization,   arrangement,
                  moratorium,  or other laws or equitable principles relating to
                  or affecting the enforcement of creditors' rights generally or
                  the enforcement of the security provided by the Mortgage,  (b)
                  the necessity  for  compliance  with the statutory  procedural
                  rights  governing  the  exercise  of  remedies  by  a  secured
                  creditor,  and (c) the  qualification  that  certain  waivers,
                  procedures, remedies, and other provisions of such Senior Note
                  Mortgage Bond and the Mortgage may be  unenforceable  under or
                  limited by the law of the State of Arizona;  however, such law
                  does not in such counsel's opinion  substantially  prevent the
                  practical   realization  of  the  benefits  intended  by  such
                  documents),  it being  understood  that such  counsel  may (A)
                  assume that at the time of the issuance,  sale and delivery of
                  each  Senior  Note  Mortgage  Bond the  authorization  of such
                  series will not have been modified or rescinded and there will
                  not have  occurred any change in law  affecting  the validity,
                  legally  binding  character or  enforceability  of such Senior
                  Note Mortgage Bond, (B) assume that neither the issuance, sale
                  and delivery of any Senior Note Mortgage  Bond, nor any of the
                  terms of such Senior Note Mortgage Bond, nor compliance by the
                  Company with such terms will violate
                                       12
<PAGE>
                  any applicable  law, any agreement or instrument  then binding
                  upon the  Company or any  restriction  imposed by any court or
                  governmental body having jurisdiction over the Company and (C)
                  state that as of the date of such opinion a judgment for money
                  in an action based on Senior Note Mortgage  Bonds  denominated
                  in foreign  currencies or currency units in a Federal or State
                  court in the United States ordinarily would be enforced in the
                  United States only in United States dollars, and that the date
                  used to  determine  the  rate  of  conversion  of the  foreign
                  currency unit in which a particular  Senior Note Mortgage Bond
                  is  denominated  into United  States  dollars will depend upon
                  various factors, including which court renders the judgment;

                           (vi) Except for property  specifically  excepted from
                  the lien of the Mortgage or released  therefrom in  accordance
                  with the terms  thereof,  the Company has good and  marketable
                  title in fee simple,  except for items  described in (A), (B),
                  and  (C)  below,  to all of the  real  property  and  fixtures
                  thereon  purported  in the Mortgage to be so held and that are
                  both  located in the State of Arizona and  described  in those
                  title reports  covering at least the Saguaro,  Yucca,  Cholla,
                  Ocotillo,  West  Phoenix,  and Palo Verde plant sites that are
                  listed on an exhibit to such opinion  (the "Title  Documents")
                  (in giving such opinion, such counsel may rely solely upon the
                  Title Documents and may assume the accuracy thereof and of the
                  real  property  descriptions  contained  therein and may state
                  that no other  investigation  or  inquiry  has been  made with
                  respect thereto),  and in giving the opinions  described below
                  with respect to any liens,  defects,  and encumbrances on such
                  title to such personal property,  such counsel may assume that
                  the Company  has good and valid  title to all of the  personal
                  property  located in the State of Arizona and described in the
                  Mortgage as subject to the lien thereof (which  property shall
                  not include fixtures),  and such counsel may rely solely upon,
                  and assume the accuracy of, a search of the Uniform Commercial
                  Code Financing  Statements filed in the records of the Arizona
                  Secretary  of State and may assume  that there are no liens or
                  other  encumbrances  on  personal  property  (as  used  in the
                  Arizona Uniform Commercial Code) of the Company located in the
                  State of Arizona other than liens or other  encumbrances  that
                  have been  perfected  by filing with the Arizona  Secretary of
                  State  under  Arizona  Revised  Statutes   ("A.R.S.")  Section
                  47-9401.A;  such title is subject only to: (A) the lien of the
                  Mortgage,   (B)  Excepted   Encumbrances  as  defined  in  the
                  Mortgage, and (C) other liens, encumbrances,  or defects, none
                  of which,  individually or in the aggregate, in the opinion of
                  such  counsel,  materially  interfere  with  the  business  or
                  operations  of the  Company (in  determining  whether any such
                  other liens,  encumbrances,  or defects  materially  interfere
                  with the business or operations  of the Company,  such counsel
                  may rely solely upon a  certificate  of an officer or engineer
                  of the Company  which  shall be  attached to such  opinion and
                  such opinion may state that no other  investigation or inquiry
                  with respect  thereto has been made);  the  Mortgage,  subject
                  only as above set forth in this clause,  now constitutes,  and
                  the  Mortgage  and  the   Mortgage   Supplemental   Indentures
                  theretofore
                                       13
<PAGE>
                  executed, subject only as above set forth in this clause, when
                  the latter  shall  have been duly  recorded  and  filed,  will
                  constitute,  together and as a single instrument, a direct and
                  valid  first  mortgage  lien  upon  said  property;   and  all
                  properties  (other  than the  classes  or  items  of  property
                  expressly  excepted in the Mortgage or expressly released from
                  the lien  thereof)  acquired by the Company  after the date of
                  such  opinion in each  county in the State of Arizona in which
                  the Mortgage and the Mortgage  Supplemental  Indentures  shall
                  have been  duly  recorded  and  filed  and,  with  respect  to
                  priority  only,  any necessary  recordation  and/or filing has
                  been   accomplished    (including    therein   any   necessary
                  descriptions of after-acquired real property and real property
                  upon which  after-acquired  fixtures are affixed)  will,  upon
                  such  acquisition,  become  subject to the first mortgage lien
                  thereof,  subject,  however,  to Excepted  Encumbrances and to
                  liens,  if any,  existing or placed thereon at the time of the
                  acquisition  thereof  by the  Company  and,  with  respect  to
                  priority only, to liens, if any, existing prior to the time of
                  any necessary recordation and/or filing by the Company;

                           (vii)  The   Company  is  the  owner  of  the  rights
                  conferred upon it by the leases from the Navajo Tribe relating
                  to the site on which the  Navajo  Plant is  located  and while
                  such  counsel  is not  aware  of the  assertion  of any  claim
                  contesting  the title of the Navajo Tribe to the lands leased,
                  such counsel shall not be required to express any opinion with
                  respect  to the  interest  of the  Navajo  Tribe in the  lands
                  leased or with  respect to the  enforceability  of such leases
                  against the Navajo Tribe;

                           (viii)  With  certain  exceptions,  a public  service
                  corporation is required to obtain  certificates of convenience
                  and necessity from the Arizona  Corporation  Commission  under
                  A.R.S.  Section 40-281.A for construction of its lines, plant,
                  services,  or systems, or any extensions  thereof,  within the
                  State of Arizona, and to obtain franchises or similar consents
                  or permits from counties and incorporated municipalities under
                  A.R.S. Section 40-283.A for the construction,  operation,  and
                  maintenance of transmission lines within the State of Arizona;
                  to the best of such counsel's knowledge after due inquiry, the
                  Company   holds  such  valid   franchises,   certificates   of
                  convenience and necessity,  consents,  and permits pursuant to
                  such statutory provisions as are necessary with respect to the
                  maintenance  and operation of its property and business as now
                  conducted, except that (A) the Company from time to time makes
                  minor  extensions  of its  system  prior to the time a related
                  franchise,  certificate,  license, or permit is procured,  (B)
                  from  time to time  communities  already  being  served by the
                  Company become  incorporated and considerable  time may elapse
                  before a franchise is  procured,  (C) certain  franchises  may
                  have expired prior to the renegotiation  thereof,  (D) certain
                  minor defects and exceptions may exist which, individually and
                  in the  aggregate,  are not  deemed  material,  and  (E)  such
                  counsel need not be required to express any opinion  regarding
                  the geographical
                                       14
<PAGE>
                  scope of any franchise,  certificate,  license, or permit that
                  is not specific as to its geographical scope;

                           (ix) No consent, approval,  authorization, or consent
                  of any public board or body is required  for the  consummation
                  of  the  transactions  contemplated  hereby  or in  any  Terms
                  Agreement,  including the issuance and sale of Securities  and
                  Senior Note Mortgage Bonds and the execution and delivery of a
                  related  Supplemental   Indenture  and  Mortgage  Supplemental
                  Indenture, except as may be required under state securities or
                  blue sky  laws,  as to which  laws such  counsel  shall not be
                  required  to express  an  opinion,  and such  other  approvals
                  (specified in such opinion) as have been obtained;

                           (x) The First  Registration  Statement and the Second
                  Registration  Statement have become  effective  under the Act,
                  and, to the best of the  knowledge  of such  counsel,  no stop
                  order suspending the  effectiveness of the First  Registration
                  Statement or the Second Registration Statement has been issued
                  and no  proceedings  for that purpose have been  instituted or
                  are pending or  contemplated  under the Act,  and each part of
                  the Registration Statements,  when such part became effective,
                  and the Prospectus,  as of the Closing Date, and any amendment
                  or supplement  thereto, as of its date, complied as to form in
                  all material  respects with the  requirements  of the Act, the
                  Trust Indenture Act, and the published Rules and  Regulations;
                  such  counsel  has no reason to  believe  that any part of the
                  Registration  Statements,  when such part became effective, or
                  the  Prospectus,  as of the Closing  Date, or any amendment or
                  supplement  thereto,  as of its  date,  contained  any  untrue
                  statement of a material  fact or omitted to state any material
                  fact  required to be stated  therein or  necessary to make the
                  statements  therein not  misleading;  the  descriptions in the
                  Registration Statements and Prospectus of statutes,  legal and
                  governmental  proceedings  and contracts,  and other documents
                  are accurate and fairly present the information required to be
                  shown;  and to the actual  knowledge  of those  persons in the
                  lawyer group described in such opinion,  there are no legal or
                  governmental  proceedings  required  to be  described  in  the
                  Prospectus  that  are  not  described  as  required,  nor  any
                  contracts or documents of a character required to be described
                  in the Registration Statements or Prospectus or to be filed as
                  exhibits to the Registration Statements that are not described
                  and filed as required (it being  understood  that such counsel
                  need  express  no opinion as to the  financial  statements  or
                  other financial data contained in the Registration  Statements
                  or the Prospectus); and

                           (xi)  This   Agreement  has  been  duly   authorized,
                  executed, and delivered by the Company.

                  In giving such  opinion,  (a) Snell & Wilmer  L.L.P.  may rely
         solely upon  certificates of the Company as to any factual matters upon
         which any such  opinions  are based  and may rely upon the  opinion  of
         Keleher & McLeod,  P.A.,  referred to below, as to all matters governed
         by
                                       15
<PAGE>
         the laws of the State of New Mexico,  but the opinion of Snell & Wilmer
         L.L.P. shall state that, though they are members of the Arizona Bar and
         do not hold  themselves  out as experts on the laws of the State of New
         Mexico,  they have made a study of the laws of such  State  insofar  as
         such laws are involved in the conclusions stated in their opinion,  and
         from  such  study it is their  opinion  that  such  laws  support  such
         conclusions and that, in their opinion,  the  Distributors and they are
         justified  to such  extent in  relying  upon the  opinion  of Keleher &
         McLeod,  P.A.;  (b)  Snell &  Wilmer  L.L.P.  may  rely on the  opinion
         delivered  pursuant to Section  5(g) as to all matters  governed by the
         laws of the State of New York;  and (c) the lawyer group referred to in
         such opinion  will mean those  lawyers in the offices of Snell & Wilmer
         L.L.P.  who (i) have billed any time on the  particular  transaction to
         which such  opinion  relates or (ii) have billed more than ten hours to
         any Company  matter in the  twelve-month  period  preceding the date on
         which the list of such  lawyers was  compiled  for  purposes of inquiry
         pursuant to such opinion.

                  (f)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in  such  Terms   Agreement,   the   Distributors   or  the  Purchasing
         Distributor,  as the case may be, shall have received an opinion, dated
         the Closing, or such date of delivery, as the case may be, of Keleher &
         McLeod, P.A., New Mexico counsel for the Company, to the effect that:

                           (i)  The  Company  is  duly  qualified  as a  foreign
                  corporation  to do  business  and is in good  standing  in the
                  State of New Mexico and has full corporate power and authority
                  to  engage  in the State of New  Mexico  in the  business  now
                  conducted by it therein;

                           (ii) The  activities  of the  Company in the State of
                  New Mexico to date do not constitute it a "public  utility" as
                  that term is defined in the relevant  laws of the State of New
                  Mexico,  and  accordingly,  no public  utility  franchises  or
                  certificates  of convenience and necessity are necessary under
                  New Mexico law with respect to the  maintenance  and operation
                  of the Company's property and business as now conducted in the
                  State of New Mexico and no approval, authorization, or consent
                  of the New  Mexico  Public  Utility  Commission  or any  other
                  public  board or body of the State of New  Mexico is  required
                  for the issuance and sale of the Securities or the Senior Note
                  Mortgage Bonds on the terms and  conditions  herein and in the
                  Prospectus set forth or  contemplated  or for the execution of
                  the Supplemental  Indenture  relating to the Securities or the
                  Mortgage  Supplemental  Indenture  relating to the Senior Note
                  Mortgage  Bonds,  except as may be  required  under New Mexico
                  state  securities  or blue sky  laws,  as to which  laws  such
                  counsel shall not be required to express an opinion;

                           (iii)  Assuming  that the  Company has good and valid
                  title to all of the personal  property located in the State of
                  New Mexico and  described  in the  Mortgage  as subject to the
                  lien  thereof  (which  property  shall not  include  fixtures)
                  ("Personal Property"),  in giving the opinions described below
                  with respect to any liens,  defects and  encumbrances  on such
                  title to such Personal
                                       16
<PAGE>
                  Property,  such counsel may rely solely  upon,  and assume the
                  accuracy of, a search of the Uniform Commercial Code Financing
                  Statements filed in the records of the New Mexico Secretary of
                  State  and  may  assume  that  there  are no  liens  or  other
                  encumbrances  on personal  property (as used in the New Mexico
                  Uniform  Commercial  Code) of the Company located in the State
                  of New Mexico other than liens or other encumbrances that have
                  been  perfected  by filing  with the New Mexico  Secretary  of
                  State under Section  55-9-401,  New Mexico Statutes  Annotated
                  1978; such title to such Personal Property is subject only to:
                  (A) the lien of the  Mortgage,  (B) Excepted  Encumbrances  as
                  defined in the Mortgage, and (C) other liens, encumbrances, or
                  defects, none of which,  individually or in the aggregate,  in
                  the opinion of such  counsel,  materially  interfere  with the
                  business or operations of the Company (in determining  whether
                  any such other  liens,  encumbrances,  or  defects  materially
                  interfere with the business or operations of the Company, such
                  counsel may rely solely  upon a  certificate  of an officer or
                  engineer  of the  Company  which  shall  be  attached  to such
                  opinion and such opinion may state that no other investigation
                  or inquiry with respect thereto has been made);  the Mortgage,
                  subject  only  as  above  set  forth  in  this   clause,   now
                  constitutes,  and the Mortgage  and the Mortgage  Supplemental
                  Indentures  theretofore  executed,  subject  only as above set
                  forth in this  clause,  when the  latter  shall have been duly
                  recorded and filed, will constitute,  together and as a single
                  instrument,  a direct and valid first  mortgage lien upon such
                  Personal Property;  and all properties (other than the classes
                  or items of property  expressly  excepted  in the  Mortgage or
                  expressly  released  from the lien  thereof)  acquired  by the
                  Company  after the date of this  opinion in each county in the
                  State of New  Mexico in which the  Mortgage  and the  Mortgage
                  Supplemental  Indentures  shall  have been duly  recorded  and
                  filed  and,  with  respect to  priority  only,  any  necessary
                  recordation  and/or  filing has been  accomplished  (including
                  therein any  necessary  descriptions  of  after-acquired  real
                  property and real property upon which after-acquired  fixtures
                  are affixed) will,  upon such  acquisition,  become subject to
                  the first mortgage lien thereof, subject, however, to Excepted
                  Encumbrances and to liens, if any,  existing or placed thereon
                  at the time of the  acquisition  thereof by the  Company  and,
                  with  respect to priority  only,  to liens,  if any,  existing
                  prior to the time of any necessary  recordation  and/or filing
                  by the Company; and

                           (iv) The Company is the owner of the rights conferred
                  upon it by the leases  from the Navajo  Tribe  relating to the
                  site on which the Four Corners plant is located and while such
                  counsel is not aware of the assertion of any claim  contesting
                  the  interest of the Navajo  Tribe in the lands  leased,  such
                  counsel  shall not be required  to express  any  opinion  with
                  respect  to the  interest  of the  Navajo  Tribe in the  lands
                  leased or with  respect to the  enforceability  of such leases
                  against the Navajo Tribe.
                                       17
<PAGE>
         In giving such  opinion,  Keleher & McLeod,  P.A.  may rely solely upon
         certificates  of the Company as to any factual  matters  upon which any
         such opinions are based.

                  (g)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in  such  Terms   Agreement,   the   Distributors   or  the  Purchasing
         Distributor,  as the case may be, shall have received an opinion, dated
         the Closing  Date,  or such date of delivery,  as the case may be, from
         counsel for the Distributors or the Purchasing Distributor, as the case
         may be, dated the Closing  Date or such date of  delivery,  as the case
         may be, with respect to the incorporation of the Company,  the validity
         of the  Securities,  the Senior Note Mortgage Bonds,  the  Registration
         Statements, the Prospectus, and other related matters as may reasonably
         be required,  and the Company shall have furnished to such counsel such
         documents as they request for the purpose of enabling them to pass upon
         such matters.  In rendering  such opinion,  such counsel may rely as to
         the  incorporation of the Company and all other matters governed by the
         laws of the States of Arizona and New Mexico upon the opinions of Snell
         & Wilmer L.L.P. and Keleher & McLeod, P.A., referred to above.

                  (h)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in  such  Terms   Agreement,   the   Distributors   or  the  Purchasing
         Distributor,  as the case may be, shall have received a certificate  of
         the  President  or any Vice  President  and a  principal  financial  or
         accounting officer of the Company,  dated the Closing Date or such date
         of delivery, as the case may be, in which such officers, to the best of
         their knowledge after  reasonable  investigation,  shall state that the
         representations  and  warranties  of the Company in this  Agreement are
         true and correct, that the Company has complied with all agreements and
         satisfied all conditions on its part to be performed or satisfied at or
         prior  to  the  Closing  Date,  that  no  stop  order   suspending  the
         effectiveness  of  the  First  Registration  Statement  or  the  Second
         Registration  Statement  has been  issued and no  proceedings  for that
         purpose have been instituted or are contemplated by the Commission, and
         that, subsequent to the date of the most recent financial statements in
         the  Prospectus,  there  has been no  material  adverse  change  in the
         financial  position  or results of  operations  of the  Company and its
         subsidiaries  except as set forth or  contemplated in the Prospectus or
         as described in such certificate.

                  (i)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in  such  Terms   Agreement,   the   Distributors   or  the  Purchasing
         Distributor,  as the case  may be,  shall  have  received  a letter  of
         Deloitte & Touche LLP, dated the Closing Date or such date of delivery,
         as the case may be,  confirming  that  they are  independent  certified
         public  accountants  within the  meaning of the Act and the  applicable
         published Rules and Regulations thereunder,  and stating in effect that
         (i) in their  opinion the  financial  statements  and  schedules of the
         Company   audited  by  them  and   incorporated  by  reference  in  the
         Registration Statements comply as to form in all material respects with
         the applicable  accounting  requirements of the Securities Exchange Act
         of 1934 (the  "1934  Act")  and the  published  Rules  and  Regulations
         thereunder  and (ii) on the basis of a reading of the latest  available
         interim financial statements of the Company,  inquiries of officials of
         the Company responsible for financial and accounting matters, and other
         specified procedures,  nothing came to their attention that caused them
         to believe that (A) the unaudited financial
                                       18
<PAGE>
         statements  incorporated  by  reference,  if any,  in the  Registration
         Statements  do not comply as to form in all material  respects with the
         applicable  accounting  requirements  of the 1934 Act and the published
         Rules  and  Regulations  thereunder  or  are  not  stated  on  a  basis
         substantially  consistent with that of the audited financial statements
         incorporated by reference in the  Registration  Statements,  (B) at the
         date of the most recent available unaudited financial statements and at
         a  specified  date not more than  five  days  prior to the date of this
         Agreement,  there was any  increase  in the  amounts  of common  stock,
         redeemable  preferred stock, or  non-redeemable  preferred stock of the
         Company or any increase,  exceeding  $10,000,000,  in long-term debt of
         the  Company  or, at the date of the most  recent  available  unaudited
         financial  statements  there was any decrease in net assets as compared
         with amounts shown in the most recent financial statements incorporated
         by  reference  in  the   Registration   Statements,   or  (C)  for  the
         twelve-month  period  ended at the date of the  most  recent  available
         unaudited financial statements there were any decreases,  exceeding 3%,
         as compared with the twelve-month  period ended at the date of the most
         recent   financial   statements   incorporated   by  reference  in  the
         Registration  Statements,  in the  amounts  of  total  revenues  or net
         income,  except in all cases for  increases or  decreases  which result
         from the declaration or payment of dividends, or which the Registration
         Statements  (including any material  incorporated by reference therein)
         disclose  have  occurred or may occur,  or which are  described in such
         letter.

                  The Company will furnish the Distributors  with such conformed
copies  of  such  opinions,  certificates,  letters,  and  documents  as  may be
reasonably requested.

                  6.  Additional  Covenants of the Company.  The Company  agrees
that:

                  (a)  Each  acceptance  by the  Company  of an  offer  for  the
         purchase of Securities  shall be deemed to be an  affirmation  that its
         representations and warranties contained in this Agreement are true and
         correct  at the  time of  such  acceptance  and a  covenant  that  such
         representations  and warranties will be true and correct at the time of
         delivery to the purchaser of the Securities as though made at and as of
         each such  time,  it being  understood  that such  representations  and
         warranties  shall  relate  to  the  Registration   Statements  and  the
         Prospectus  as amended  or  supplemented  at each such time.  Each such
         acceptance by the Company of an offer to purchase  Securities  shall be
         deemed  to  constitute  an  additional  representation,   warranty  and
         agreement  by the  Company  that,  as of the date of  delivery  of such
         Securities  to  the  purchaser  thereof,  after  giving  effect  to the
         issuance of such Securities, of any other Securities to be issued on or
         prior to such delivery date and of any other  Registered  Securities to
         be issued and sold by the  Company on or prior to such  delivery  date,
         the  aggregate   amount  of  Registered   Securities   (including   any
         Securities)  which have been  issued and sold by the  Company  will not
         exceed the amount of Registered  Securities  registered pursuant to the
         Registration Statements.

                  (b)  Each  time  that  the  Registration   Statements  or  the
         Prospectus  shall be amended or  supplemented  (other than by a Pricing
         Supplement,  an amendment or supplement which relates exclusively to an
         offering of securities  other than the  Securities,  or an amendment or
         supplement  that  occurs  through the filing an  incorporated  document
         (other than a Form 10-K or Form 10-Q) with the Commission), the Company
         shall, (A) concurrently  
                                       19
<PAGE>
         with such  amendment or  supplement,  if such  amendment or  supplement
         shall  occur  at a  Marketing  Time,  or (B)  immediately  at the  next
         Marketing  Time if such  amendment or  supplement  shall not occur at a
         Marketing Time, furnish the Distributors with a certificate,  dated the
         date of delivery thereof,  of the President or any Vice President and a
         principal  financial  or  accounting  officer of the  Company,  in form
         satisfactory  to the  Distributors,  to the effect that the  statements
         contained in the certificate  covering the matters set forth in Section
         5(h) hereof which was last  furnished to the  Distributors  pursuant to
         this Section 6(b) are true and correct at the time of such amendment or
         supplement,  as though  made at and as of such time or, in lieu of such
         certificate,  a  certificate  of the  same  tenor  as  the  certificate
         referred to in Section 5(h).

                  (c) At each  Representation  Date referred to in Section 6(b),
         the Company shall, (A) concurrently if such  Representation  Date shall
         occur at a Marketing  Time, or (B)  immediately  at the next  Marketing
         Time if such  Representation  Date shall not occur at a Marketing Time,
         furnish the Distributors with a written opinion or opinions,  dated the
         date of such  Representation  Date, of counsel for the Company, in form
         satisfactory to the  Distributors,  to the effect set forth in Sections
         5(e) and 5(f) hereof; provided, however, that to the extent appropriate
         such  opinion or opinions  may  reconfirm  matters set forth in a prior
         opinion  delivered  at the  Closing  Date or under this  Section  6(c);
         provided further, however, that any opinion or opinions furnished under
         this Section 6(c) shall relate to the  Registration  Statements and the
         Prospectus as amended or supplemented at such Representation Date.

                  (d) At each Representation Date referred to in Section 6(b) on
         which the Registration Statements or the Prospectus shall be amended or
         supplemented to include additional financial  information,  the Company
         shall  cause   Deloitte  &  Touche  LLP,  (A)   concurrently   if  such
         Representation Date shall occur at a Marketing Time, or (B) immediately
         at the next Marketing Time if such  Representation Date shall not occur
         at a  Marketing  Time,  to  furnish  the  Distributors  with a  letter,
         addressed  jointly to the  Company and the  Distributors  and dated the
         date of such  Representation  Date,  to the effect set forth in Section
         5(i) hereof;  provided,  however,  that to the extent  appropriate such
         letter may reconfirm  matters set forth in a prior letter  delivered at
         the Closing Date or pursuant to this Section  6(d);  provided  further,
         however, that any letter furnished under this Section 6(d) shall relate
         to the  Registration  Statements  and  the  Prospectus  as  amended  or
         supplemented at such  Representation  Date, with such changes as may be
         necessary  to reflect  changes in the  financial  statements  and other
         information derived from the accounting records of the Company.

                  (e) On  each  date  for  the  delivery  of  Securities  to the
         purchaser  thereof,  the Company shall, if requested by the Distributor
         that solicited or received the offer to purchase any  Securities  being
         delivered on such  settlement  date,  furnish such  Distributor  with a
         written  opinion or opinions,  dated the date of delivery  thereof,  of
         counsel for the Company,  to the effect set forth in Sections  5(e) and
         5(f) hereof;  provided,  however,  that in lieu of each  opinion,  such
         counsel may furnish  the  Distributor  with a letter to the effect that
         the  Distributor  may rely on such prior  opinion to the same extent as
         though it was dated such 
                                       20
<PAGE>
         delivery  date (except that  statements  in such prior opinion shall be
         deemed to relate  to the  Registration  Statements  and  Prospectus  as
         amended  or  supplemented  to the  time  of  delivery  of  such  letter
         authorizing reliance).

                  (f) The Company agrees that any obligation of a person who has
         agreed to purchase  Securities,  to make payment for, and take delivery
         of such Securities shall be subject to (i) the accuracy, on the related
         settlement  date fixed  pursuant to the  Procedures,  of the  Company's
         representation  and  warranty  deemed  to be made  to the  Distributors
         pursuant to the last sentence of subsection  (a) of this Section 6, and
         (ii)  the  satisfaction,  on  such  settlement  date,  of  each  of the
         conditions set forth in Sections 5(a), (b) and (c), it being understood
         that  under no  circumstance  shall  any  Distributor  have any duty or
         obligation to exercise the judgment permitted under Section 5(b) or (c)
         on behalf of any such person.

                  7.       Indemnification.

                  (a)  The  Company  will   indemnify  and  hold  harmless  each
         Distributor  and each person,  if any, who  controls  such  Distributor
         within the meaning of the Act against  any losses,  claims,  damages or
         liabilities,  joint or  several,  to  which  such  Underwriter  or such
         controlling  person may  become  subject,  under the Act or  otherwise,
         insofar as such losses, claims,  damages, or liabilities (or actions in
         respect thereof) arise out of or are based upon any untrue statement or
         alleged untrue  statement of any material fact contained in any part of
         the Registration Statements relating to the Securities,  when such part
         became effective,  any preliminary prospectus or preliminary prospectus
         supplement,  the Prospectus, or any amendment or supplement thereto, or
         arise out of or are based  upon the  omission  or alleged  omission  to
         state  therein  a  material  fact  required  to be  stated  therein  or
         necessary  to make the  statements  therein  not  misleading;  and will
         reimburse each  Distributor  and each such  controlling  person for any
         legal or other expenses reasonably incurred by such Distributor or such
         controlling  person in connection with  investigating  or defending any
         such loss, claim, damage, liability, or action; provided, however, that
         the Company  will not be liable in any such case to the extent that any
         such loss,  claim,  damage, or liability arises out of or is based upon
         an untrue  statement or alleged untrue statement or omission or alleged
         omission  made  in  any of  such  documents  in  reliance  upon  and in
         conformity  with  written  information  furnished to the Company by any
         Distributor specifically for use therein. This indemnity agreement will
         be in addition to any liability which the Company may otherwise have.

                  (b)  Each  Distributor  will  severally   indemnify  and  hold
         harmless the Company,  each of its directors,  each of its officers who
         have signed the Registration  Statements,  and each person, if any, who
         controls the Company within the meaning of the Act, against any losses,
         claims,  damages,  or  liabilities  to which  the  Company  or any such
         director,  officer, or controlling person may become subject, under the
         Act  or  otherwise,   insofar  as  such  losses,  claims,  damages,  or
         liabilities  (or actions in respect  thereof) arise out of or are based
         upon any untrue  statement or alleged untrue  statement of any material
         fact contained in any part of the Registration  Statements  relating to
         the  Securities,  when  such part  became  effective,  any  preliminary
         prospectus or preliminary prospectus supplement, the Prospectus, or any
                                       21
<PAGE>
         amendment or supplement  thereto, or arise out of or are based upon the
         omission  or the  alleged  omission  to state  therein a material  fact
         required  to be stated  therein  or  necessary  to make the  statements
         therein not  misleading,  in each case to the  extent,  but only to the
         extent,  that such untrue  statement  or alleged  untrue  statement  or
         omission  or  alleged  omission  was  made  in  reliance  upon  and  in
         conformity  with written  information  furnished to the Company by such
         Distributor  specifically for use therein; and will reimburse any legal
         or  other  expenses  reasonably  incurred  by the  Company  or any such
         director,   officer,   or   controlling   person  in  connection   with
         investigating or defending any such loss, claim, damage,  liability, or
         action.  This indemnity  agreement will be in addition to any liability
         which such Distributor may otherwise have.

                  (c) Promptly after receipt by an indemnified  party under this
         Section of notice of the  commencement of any action,  such indemnified
         party  will,  if a claim in respect  thereof is to be made  against the
         indemnifying party under this Section, notify the indemnifying party of
         the   commencement   thereof;   but  the  omission  so  to  notify  the
         indemnifying  party will not relieve it from any liability  that it may
         have to any  indemnified  party  otherwise than under this Section.  In
         case any such action is brought against any indemnified  party,  and it
         notifies  the  indemnifying  party  of the  commencement  thereof,  the
         indemnifying party will be entitled to participate  therein and, to the
         extent  that it may wish,  jointly  with any other  indemnifying  party
         similarly  notified,  to  assume  the  defense  thereof,  with  counsel
         satisfactory  to such  indemnified  party (who shall not,  without  the
         consent  of the  indemnified  party,  be  counsel  to the  indemnifying
         party),   and  after  notice  from  the  indemnifying   party  to  such
         indemnified party of its election so to assume the defense thereof, the
         indemnifying  party will not be liable to such indemnified  party under
         this Section for any legal or other expenses  subsequently  incurred by
         such  indemnified  party in connection  with the defense  thereof other
         than reasonable costs of investigation. An indemnifying party shall not
         be liable for any settlement of a claim or action effected  without its
         written consent, which shall not be unreasonably withheld.

                  (d) If the  indemnification  provided  for in this  Section is
         unavailable or insufficient  to hold harmless an indemnified  party for
         any loss, claim, damage,  liability,  or action described in subsection
         (a) or (b) above, then each indemnifying  party shall contribute to the
         amount  paid or  payable by such  indemnified  party as a result of the
         losses, claims, damages or liabilities referred to in subsection (a) or
         (b) above on the  following  basis:  (1) if such loss,  claim,  damage,
         liability,  or action arises under  subsection  (a) above,  then (i) in
         such  proportion  as is  appropriate  to reflect the relative  benefits
         received by the Company on the one hand and the  Distributor[s]  on the
         other from the  offering of the  Securities  or (ii) if the  allocation
         provided by clause (i) above is not  permitted  by  applicable  law, in
         such  proportion  as is  appropriate  to reflect not only the  relative
         benefits referred to in clause (i) above but also the relative fault of
         the  Company  on the one  hand  and the  Distributors  on the  other in
         connection  with the  statements  or omissions  which  resulted in such
         losses,  claims,  damages or  liabilities as well as any other relevant
         equitable  considerations;   and  (2)  if  such  loss,  claim,  damage,
         liability,  or action arises under  subsection (b) above,  then in such
         proportion  as is  appropriate  to reflect  the  relative  fault of the
         Company on the one hand and the Distributors on the other in connection
         with the statements or omissions which resulted in such losses, claims,
         damages  or  liabilities  as  well  as  any  other  relevant  equitable
         considerations. For the purposes of clause (1) above, the  
                                       22
<PAGE>
         relative  benefits  received  by the  Company  on the one  hand and the
         Distributors  on the other shall be deemed to be in the same proportion
         as the total net proceeds from the offering (before deducting expenses)
         received by the Company bear to the total  underwriting  discounts  and
         commissions  received by the Distributors.  For the purposes of clauses
         (1) and (2) above,  the relative fault shall be determined by reference
         to, among other things,  whether the untrue or alleged untrue statement
         of a  material  fact or the  omission  or alleged  omission  to state a
         material  fact  relates to  information  supplied by the Company or the
         Distributors  and the parties'  relative intent,  knowledge,  access to
         information and opportunity to correct or prevent such untrue statement
         or omission. The amount paid by an indemnified party as a result of the
         losses,  claims,  damages  or  liabilities  referred  to in  the  first
         sentence of this subsection (d) shall be deemed to include any legal or
         other  expenses  reasonably  incurred  by  such  indemnified  party  in
         connection with investigating or defending any action or claim which is
         the  subject of this  subsection  (d). No person  guilty of  fraudulent
         misrepresentation  (within  the  meaning of  Section  11(f) of the Act)
         shall be entitled to contribution from any person who was not guilty of
         such fraudulent  misrepresentation.  The  Distributors'  obligations in
         this  subsection  (d) to contribute  are several in proportion to their
         respective obligations and not joint.

                  8.  Status  of  Each  Distributor.  In  soliciting  offers  to
purchase  the  Securities  from the Company  pursuant to this  Agreement  and in
assuming its other obligations  hereunder (other than any obligation to purchase
Securities   pursuant  to  Section  3  hereof),   each   Distributor  is  acting
individually  and not jointly and is acting  solely as agent for the Company and
not as  principal.  In  connection  with the  placement of any  Securities  by a
Distributor,  acting as agent, (a) each Distributor will make reasonable efforts
to assist the Company in obtaining  performance by each purchaser whose offer to
purchase  Securities from the Company has been solicited by such Distributor and
accepted by the  Company,  but such  Distributor  shall have no liability to the
Company in the event any such purchase is not  consummated  for any reason;  and
(b) if the Company shall default on its  obligations to deliver  Securities to a
purchaser  whose  offer  it  has  accepted,  the  Company  (i)  shall  hold  the
Distributors  harmless  against any loss,  claim or damage  arising from or as a
result of such default by the Company, and (ii) in particular,  shall pay to the
Distributors  any commission to which they would be entitled in connection  with
such sale.

                  9. Survival of Certain  Representations  and Obligations.  The
respective  indemnities,  agreements,  representations,  warranties,  and  other
statements of the Company or its officers and of the  Distributors  set forth in
or made  pursuant  to this  Agreement  will  remain  in full  force  and  effect
regardless of any investigation, or statement as to the results thereof, made by
or on  behalf of the  Distributors  or the  Company  or any of its  officers  or
directors or any controlling  person,  and will survive  delivery of and payment
for the  Securities.  If this Agreement is terminated  pursuant to Section 10 or
for any other reason or if for any reason the sale of Securities  described in a
confirmation  or Terms  Agreement  referred  to  Section 3 by the  Company  to a
Distributor is not  consummated,  the Company shall remain  responsible  for the
expenses  to be paid or  reimbursed  by it  pursuant  to  Section  4(g)  and the
obligations  of the  Company  under  Sections  4(c) and 4(f) and the  respective
obligations  of the  Company  and the  Distributors  pursuant to Section 7 shall
remain in effect.  In addition,  if any such termination of this Agreement shall
occur either (i) at a time when any Distributor shall own any Securities that it
has purchased from the Company as principal with the intention of reselling them
and the  Distributor  has held such  Securities  for fewer  than 90 days or (ii)
after the Company has accepted 
                                       23
<PAGE>
an offer to purchase Securities but the related settlement has not occurred, the
obligations  of the Company  under the proviso in Section 4(b),  under  Sections
4(a),  4(d),  4(e)  and 4(h)  and,  in the case of a  termination  occurring  as
described in (ii) above,  under Sections 3(c), 6(a), 6(e) and 6(f) and under the
last sentence of Section 8, shall also remain in effect.

                  10.  Termination.  This  Agreement may be  terminated  for any
reason at any time by the Company as to any  Distributor  or, in the case of any
Distributor,  by such  Distributor  insofar  as this  Agreement  relates to such
Distributor,  upon the giving of one day's written notice of such termination to
the other parties  hereto;  provided,  however,  that this  Agreement may not be
terminated with respect to a Distributor by the giving of such notice  following
receipt by the  Company of a  confirmation  or Terms  Agreement  referred  to in
Section 3 relating to the purchase of Securities by such  Distributor  and prior
to delivery of the Securities described in such confirmation or Terms Agreement,
unless the sale and purchase of Securities  contemplated  thereby is rejected by
the  Company in  accordance  with  Section  3. Any  settlement  with  respect to
Securities   placed  by  a  Distributor  on  an  agency  basis  occurring  after
termination  of this Agreement  shall be made in accordance  with the Procedures
and each  Distributor  agrees,  if requested  by the Company,  to take the steps
therein  provided  to be taken  by such  Distributor  in  connection  with  such
settlement.

                  11. Sales of Securities  Denominated  in a Currency other than
U.S. Dollars or of Indexed Securities. If at any time the Company and any of the
Distributors  shall  determine  to issue and sell  Securities  denominated  in a
currency  other than U.S.  dollars,  which other currency may include a currency
unit,  or with  respect to which an index is used to  determine  the  amounts of
payments of  principal  and any premium and  interest,  the Company and any such
Distributor  may execute  and deliver a  supplement  to this  Agreement  for the
purpose of making any appropriate additions to and modifications of the terms of
this Agreement (and the Procedures)  applicable to such Securities and the offer
and sale thereof.  The Distributors are authorized to solicit offers to purchase
Securities  with respect to which an index is used to  determine  the amounts of
payments of principal and any premium and interest,  and the Company shall agree
to any sales of such  Securities  (whether  offered  on an  agency or  principal
basis),  only in a minimum aggregate amount of $2,500,000.  The Company will not
issue Securities denominated in Yen otherwise than in compliance with applicable
Japanese  laws,  regulations  and policies.  In  particular,  the Company or its
designated  agent shall  submit such reports or  information  as may be required
from time to time by applicable law,  regulations and guidelines  promulgated by
Japanese  governmental  and regulatory  authorities in the case of the issue and
purchase of the  Securities and the Company shall ensure that each such Security
shall have a minimum  denomination of (Y)1,000,000 and a minimum maturity of one
year or such other minimum denomination and maturity as may be allowed from time
to time by Japanese governmental and regulatory authorities.

                  12.  Notices.  All  communications  hereunder  relating to any
offering of Securities will be in writing, and, if sent to the Distributors, may
be mailed,  delivered,  or telecopied and confirmed at their addresses furnished
to the Company in writing for the purpose of communications.  All communications
hereunder to the Company shall be mailed to the Company,  Attention:  Treasurer,
at 
                                       24
<PAGE>
P.O. Box 53999,  Phoenix,  Arizona 85072-3999,  or delivered,  or telecopied and
confirmed to the Company at 400 North Fifth Street, Phoenix, Arizona 85004.

                  13.  Successors.  This  Agreement will inure to the benefit of
and be binding upon the parties hereto and the  Distributors as are named in any
Terms Agreement and their  respective  successors and the officers and directors
and controlling  persons referred to in Section 7 and, to the extent provided in
Section 6(f), any person who has agreed to purchase Securities from the Company,
and no other person will have any right or obligation hereunder.

                  14.  Governing  Laws;  Counterparts.  This Agreement  shall be
governed by and construed in accordance  with the laws of the State of New York.
This  Agreement  and  any  Terms  Agreement  may be  executed  in  one  or  more
counterparts,  each of which  shall be  deemed to be an  original,  but all such
respective counterparts shall together constitute a single instrument.
                                       25
<PAGE>
                  If the foregoing is in accordance with your  understanding  of
our  agreement,  kindly  sign and return to us the  enclosed  duplicate  hereof,
whereupon  it will  become a  binding  agreement  between  the  Company  and the
Underwriters in accordance with its terms.


                                                  Very truly yours,

                                                  ARIZONA PUBLIC SERVICE COMPANY



                                                  By:___________________________



Confirmed and Accepted, as of the
date first above written:


[NAME OF DISTRIBUTOR]


By:____________________________________


[NAME OF DISTRIBUTOR]


By:____________________________________
                                       26
<PAGE>
                                                                       Exhibit A

                         Arizona Public Service Company

                                   ("Company")

                         Medium Term Notes, Series _____

                   Due Nine Months or More from Date of Issue

                                 TERMS AGREEMENT
                                 ---------------

                                                              ___________, 199__

Arizona Public Service Company
400 North 5th Street
Phoenix, AZ   85004
Attention:  Treasurer

Ladies and Gentlemen:

                  We  offer  to  purchase,  on  and  subject  to the  terms  and
conditions of the  Distribution  Agreement  filed as an exhibit to the Company's
registration statement on Form S-3 (No. 333-_____)  ("Distribution  Agreement"),
the following Securities ("Notes") on the following terms:

                  Title:

                  Currency or Currency Units:

                  Stated Maturity:

                  Principal Amount:

                  Public Offering Price: [___%,   subject   to   change  by  the
                                            undersigned   --   The   Distributor
                                            proposes  to reoffer the above Notes
                                            from time to time at  market  prices
                                            prevailing  at the time of sale,  at
                                            prices  related  to such  prevailing
                                            market   prices  or  at   negotiated
                                            prices.]

                  Original Issue Discount Security:  Yes ____  No ____

                  Denominations:

                  Purchase  Price (to be paid in immediately  available  funds):
                  ___% [, plus accrued interest,  if any, from the Trade Date to
                  the Settlement Date]

                  Underwriting  Discount or Commission received from the Company
                  (%):

                  Proceeds to Company (If different from Public  Offering Price)
                  (%):
<PAGE>
                  In the case of Fixed Rate  Notes,  the  interest  rate and, if
                  different   from  the  dates  set  forth  in  the   Prospectus
                  Supplement,   the   Interest   Payment   Date  or  Dates   and
                  corresponding Regular Record Date or Dates:

                  In the case of Floating Rate Notes, the interest rate formula,
                  Initial  Interest  Rate,  the Index  Maturity,  the  Spread or
                  Spread  Multiplier (if any),  the maximum or minimum  Interest
                  rate  limitations  (if any),  the Interest  Reset  Dates,  the
                  Interest  Determination  Dates,  the  Calculation  Agent,  the
                  Calculation  Dates, the Interest Payment Dates and the Regular
                  Record Dates, in each case to the extent applicable:





                  Optional Redemption (option of the Company):

                           Redemption Date(s):
                           Redemption Prices(s)(%):
                           Notice Period:

                  Optional Redemption (option of the Holder):

                           Redemption Date(s):
                           Redemption Price(s)(%):
                           Notice Period:

                  Sinking Fund:

                  Other Terms:

                  Trade Date:

                  Settlement Date (Issue Date):
                                      -2-
<PAGE>
                     *        *        *        *        *

Details for Settlement
- ----------------------

                  (Additional   Purchase  Information  --  to  be  completed  by
Distributor, if desired, to the extent available):

                           Exact  name in  which  the  Note or  Notes  are to be
                           registered ("registered owner"):

                           Exact address of registered  owner and, if different,
                           the  address  for  delivery of notices and payment of
                           principal and any premium and interest:

                           Taxpayer identification number of registered owner:

                           Principal   amount   of  each   Note  in   authorized
                           denominations to be delivered to registered owner:

                           Exchange rate applicable to purchase Foreign Currency
                           Notes to be paid for in U.S. dollars:

                     *        *        *        *        *

                  Our  agreement to purchase  the Notes  hereunder is subject to
the conditions set forth in the Distribution Agreement, including the conditions
set forth in  paragraphs  (d), (e), (f), (g), (h), and (i) of Section 5 thereof.
If  for  any  reason  the  purchase  by the  undersigned  of  the  Notes  is not
consummated  other than because of a default by the  undersigned or a failure to
satisfy a condition  set forth in clause  (ii),  (iii) or (v) of Section 5(c) of
the Distribution Agreement,  the Company shall reimburse the undersigned for all
out-of-pocket expenses reasonably incurred by the undersigned in connection with
the offering of the Notes and not otherwise  required to be reimbursed  pursuant
to Section 4 of the Distribution Agreement.
                                      -3-
<PAGE>
                  Unless the  undersigned  has  received  notification  from the
Company  within [one  Business Day (as defined in the  Distribution  Agreement)]
that the  Company  does not  agree to the terms set  forth  herein,  this  Terms
Agreement shall constitute an agreement  between the Company and the undersigned
for the sale and  purchase  of the Notes upon the terms set forth  herein and in
the Distribution Agreement.

                                         Very truly yours,

                                         [NAME OF DISTRIBUTOR]



                                         By ____________________________________


Accepted and agreed to 
as of the date set forth above.

ARIZONA PUBLIC SERVICE COMPANY



By _________________________________
                                      -4-
<PAGE>
                                                                       EXHIBIT B



                          COMMISSION SCHEDULE TO FOLLOW
<PAGE>
                                                                       EXHIBIT C

                            ADMINISTRATIVE PROCEDURES
                            -------------------------

                  The medium-term notes due nine months or more from their issue
date (the  "Notes"),  are to be offered on a continuing  basis by Arizona Public
Service     Company     (the     "Company").     _______________________     and
_____________________  (individually,  a  "Distributor"  and  collectively,  the
"Distributors"), have each agreed to use reasonable efforts to solicit offers to
purchase the Notes. Each Distributor may, but will not be obligated to, purchase
Notes as principal  for its own account.  The Notes are being sold pursuant to a
Distribution   Agreement,   dated   ______________,   19__  (the   "Distribution
Agreement"),  between  the  Company  and the  Distributors,  and will be  issued
pursuant to an Indenture, dated as of November 15, 1996, as amended from time to
time (the "Indenture"), between the Company and The Bank of New York, as trustee
(the "Trustee"). Subject to Article 14 of the Indenture, until the Release Date,
the Notes will be secured by one or more series of the Company's  first mortgage
bonds issued and  delivered by the Company to the Trustee for the Notes.  On the
Release Date, the Notes will cease to be secured by the Company's first mortgage
bonds, will become unsecured general  obligations of the Company,  and will rank
on a parity with other  unsecured  senior  indebtedness  of the  Company.  For a
description of the terms of the Notes and the offering and sale thereof, see the
sections entitled "Description of Senior Notes", "Special Provisions Relating to
Foreign Currency  Notes",  "Plan of Distribution of Senior Notes" and "Glossary"
in the  Prospectus  Supplement  relating  to the Notes,  dated  ________,  19__,
attached hereto and hereinafter referred to as the "Prospectus Supplement",  and
the sections  entitled  "Description of Senior Notes" and "Plan of Distribution"
in the Prospectus relating to the Notes, dated  _______________,  19__, attached
hereto and  hereinafter  referred  to as the  "Prospectus."  Defined  terms used
herein but not defined  herein shall have the  meanings  assigned to them in the
Distribution Agreement, the Prorospectus Supplement.

                  The Notes will be represented either by Global Notes delivered
to The  Depository  Trust  Company  ("DTC") or its nominee  and  recorded in the
book-entry system maintained by DTC or such nominee  ("Book-Entry  Notes") or by
certificates  issued in  definitive  form  delivered  to the Holders  thereof or
Persons  designated  by such  Holders  ("Certificated  Notes").  Notes for which
interest is  calculated  on the basis of a fixed  interest  rate are referred to
herein as "Fixed Rate Notes".  Notes for which  interest is calculated at a rate
or rates  determined  by reference  to an interest  rate formula are referred to
herein as "Floating Rate Notes".

                  Notes may be  issued  as  Indexed  Notes,  with the  principal
amount  payable at  Maturity,  the  amount of  interest  payable on an  Interest
Payment Date, or both,  to be  determined by reference to  currencies,  currency
units, commodity prices, financial or non-financial indices or other factors, as
indicated in the  applicable  Pricing  Supplement.  Holders of Indexed Notes may
receive a  principal  amount at Maturity  that is greater  than or less than the
face amount of such Notes  depending upon the fluctuation of the relative value,
rate or price of the specified  index.  Specific  information  pertaining to the
method for determining the principal amount payable at
<PAGE>
Maturity,  a historical  comparison of the relative value,  rate or price of the
specified  index and the face amount of the Indexed Note and any  additional tax
considerations will be described in the applicable Pricing Supplement.

                  Notes  which are issued at a price  lower  than the  principal
amount  thereof and which provide that upon  redemption or  acceleration  of the
Maturity thereof an amount less than the principal  thereof shall become due and
payable are referred to herein as "Original Issue Discount  Notes".  For special
provisions relating to Original Issue Discount Notes and other Notes issued at a
discount for tax purposes,  see the section  entitled "United States Taxation --
Original Issue Discount" in the Prospectus Supplement.

                  Unless   otherwise   indicated  in  the   applicable   Pricing
Supplement,  the Notes will be  denominated  in U.S.  dollars  and  payments  of
principal  of and any  premium  and  interest  on the Notes will be made in U.S.
dollars in the manner indicated in the Prospectus and the Prospectus Supplement.
Notes  denominated  in one or more  currencies or currency units other than U.S.
dollars  are  referred  to herein  as  "Foreign  Currency  Notes".  For  special
provisions  relating  to  Foreign  Currency  Notes,  see the  sections  entitled
"Special  Provisions  Relating  to  Foreign  Currency  Notes" in the  Prospectus
Supplement . Specific  information  concerning the foreign  currency or currency
unit in which a  particular  Foreign  Currency  Note is  denominated,  including
historical  exchange  rates and a  description  of the currency and any exchange
controls,  shall  be  contained  in  a  Pricing  Supplement  to  the  Prospectus
Supplement reflecting the terms of such Note.

                  Notes which  provide  that  amounts  payable by the Company in
respect  of  principal  of or any  premium  or  interest  on the Notes  shall be
determined  by  reference to the value,  rate or price of one or more  specified
indices,  are  referred  to  herein as  "Indexed  Notes".  Specific  information
pertaining  to the method for  determining  the  principal  amounts  payable,  a
historical  comparison  of the  value,  rate or  price of the  specified  index,
indices  and the face  amount of the Indexed  Note and  certain  additional  tax
considerations will be described in the applicable Pricing Supplement.

                  Administrative  procedures  and specific terms of the offering
are explained below. Part I indicates  procedures  applicable to all Notes; Part
II indicates specific  procedures for Certificated Notes; and Part III indicates
specific  procedures for Book-Entry  Notes.  Administrative  and  record-keeping
responsibilities will be handled for the Company by its Treasury Department. The
Company  will  advise the  Distributors  in writing  of those  persons  handling
administrative  responsibilities  with whom the  Distributors are to communicate
regarding offers to purchase Notes and the details of their delivery.
                                      C-2
<PAGE>
PART I: PROCEDURES APPLICABLE TO ALL NOTES
- ------------------------------------------

Issue Date
- ----------

                  Each Note will be dated the date of its  authentication.  Each
Note will also bear an  original  issue  date (the  "Issue  Date")  which,  with
respect  to any  such  Note (or  portion  thereof),  shall  mean the date of its
original issuance and shall be specified therein. The Issue Date will remain the
same for all Notes subsequently  issued upon transfer,  exchange or substitution
of a Note, regardless of their dates of authentication.

Price to Public
- ---------------

                  Except as otherwise  specified in a Pricing  Supplement,  each
Note will be issued at 100% of principal amount.


Maturities; Minimum Purchase;
- -----------------------------

                  Each Note will mature on a date, selected by the purchaser and
agreed to by the  Company,  which  will be at least nine  months  from its Issue
Date.  The  minimum  aggregate  amount  of Notes  which  may be  offered  to any
purchaser will be $100,000.

Interest Payments
- -----------------

                  Interest on each  interest-bearing Note will be calculated and
paid in the manner  described in such Note and in the Prospectus  Supplement and
the applicable Pricing Supplement.  Unless otherwise set forth therein, interest
on Fixed Rate Notes (including  interest for partial periods) will be calculated
on the basis of a 360-day  year of twelve  30-day  months and will not accrue on
the 31st day of any month.  Interest on Floating Rate Notes, except as otherwise
set forth therein,  will be calculated on the basis of actual days elapsed and a
year of 360 days,  except that in the case of a Floating Rate Note for which the
Base Rate is the Treasury Rate,  interest will be calculated on the basis of the
actual number of days in the year.

                  On the fifth Market Day  immediately  preceding  each Interest
Payment  Date,  the Trustee  will  furnish the Company  with the total amount of
interest  payments  (whether  in U.S.  dollars or other  currencies  or currency
units) to be made on such  Interest  Payment  Date.  The  Trustee  will  provide
monthly, to the Company's Treasury  Department,  a list of the principal and any
premium and interest to be paid on Notes maturing in the next succeeding  month.
The Trustee will assume responsibility for withholding taxes on interest paid as
required by law.
                                      C-3
<PAGE>
Redemption/Repayment
- --------------------

                  If indicated in the applicable Pricing  Supplement,  the Notes
of a particular tenor will be subject to redemption in whole or in part (subject
to applicable minimum denominations),  at the option of the Company on and after
an initial redemption date as set forth in the applicable Pricing Supplement and
in the applicable Note. The redemption price will be set forth in the applicable
Pricing Supplement and in the applicable Note.

                  If indicated in the applicable Pricing  Supplement,  the Notes
of a particular  tenor will be subject to repayment at the option of the Holders
thereof in  accordance  with the terms of the Notes on a  repayment  date as set
forth in the  applicable  Pricing  Supplement  and in the  applicable  Note. The
repayment date or dates and repayment  price will be set forth in the applicable
Pricing Supplement and in the applicable Note. The applicable Pricing Supplement
will also indicate whether a Note is subject to an optional extension beyond its
Stated  Maturity  or  whether  the term of all or any  portion  of a Note may be
extended beyond its initial Stated Maturity Date.

Procedures for Establishing the Terms of the Notes
- --------------------------------------------------

                  The Company and the  Distributors  will  discuss  from time to
time the price of and the  rates to be borne by the Notes  that may be sold as a
result of the solicitation of offers by the  Distributors.  Once any Distributor
has  recorded  any  indication  of interest  in Notes upon  certain  terms,  and
communicated  with the  Company,  if the  Company  plans to  accept  an offer to
purchase  Notes upon such terms,  it will  prepare a Pricing  Supplement  to the
Prospectus, as then amended or supplemented,  reflecting the terms of such Notes
and,  after  approval  from the  Distributors,  will arrange to have the Pricing
Supplement filed with, or transmitted by a means reasonably calculated to result
in filing with, the Securities and Exchange  Commission (the  "Commission")  via
the  Commission's  Edgar System pursuant to Rule 424 under the Securities Act of
1933, as amended (the "Act").* The Company will supply at least 10 copies of the
Prospectus,   as  then  amended  or  supplemented,   and  bearing  such  Pricing
Supplement,  to  the  Distributor  who  presented  the  offer  (the  "Presenting
Distributor").  No  settlements  with respect to Notes upon such terms may occur
prior to such  transmitting  or filing and the  Distributors  will not, prior to
such transmitting or filing, mail confirmations to customers who have offered to
purchase  Notes upon such  terms.  After  such  transmitting  or filing,  sales,
mailing of  confirmations  and  settlements may occur with respect to Notes upon
such terms, subject to the provisions of "Delivery of Prospectus" below.

- -------------------
*        If clause (b)(3) of Rule 424 is  applicable,  such filing shall be made
         no later than the fifth  business day following the earlier of the date
         of determination of the settlement  information  described below or the
         date such Pricing  Supplement is first used. If clause (b)(2) or (b)(5)
         of Rule 424 is applicable,  such filing shall be made no later than the
         second business day following the earlier of the date of  determination
         of the settlement  information  or the date such Pricing  Supplement is
         first used.
                                      C-4
<PAGE>
                  Pricing  Supplements  delivered  to the  Distributors  will be
sent:

                  if sent to _________________________:




                  if sent to _________________________:




                  If the Company  decides to post rates and a decision  has been
reached  to change  interest  rates,  the  Company  will  promptly  notify  each
Distributor.  Each Distributor will forthwith suspend solicitation of purchases.
At that time,  the  Distributors  will  recommend and the Company will establish
rates to be so "posted."  Following  establishment  of posted rates and prior to
the   transmitting  or  filing  described  in  the  preceding   paragraph,   the
Distributors may only record  indications of interest in purchasing Notes at the
posted rates.  Once any  Distributor  has recorded any indication of interest in
Notes at the posted  rates and  communicated  with the  Company,  if the Company
plans  to  accept  an  offer at the  posted  rate,  it will  prepare  a  Pricing
Supplement   reflecting   such  posted  rate  and,   after   approval  from  the
Distributors, will arrange to have copies of the Pricing Supplement, filed with,
or  transmitted  by means  reasonably  calculated to result in filing with,  the
Commission via the  Commission's  Edgar System pursuant to Rule 424(b) under the
Act and will  supply at least 10 copies of the  Prospectus,  as then  amended or
supplemented,   and  bearing  such  Pricing   Supplement,   to  the   Presenting
Distributor.  No  settlements  at the  posted  rates  may  occur  prior  to such
transmitting or filing and the Distributors will not, prior to such transmitting
or filing, mail confirmations to customers who have offered to purchase Notes at
the  posted  rates.  After  such  transmitting  or  filing,  sales,  mailing  of
confirmations and settlements may resume, subject to the provisions of "Delivery
of Prospectus" below.

                  Outdated Pricing Supplements,  and copies of the Prospectus to
which  they  are  attached  (other  than  those  retained  for  files),  will be
destroyed.
                                      C-5
<PAGE>
Suspension of Solicitation: Amendment or Supplement
- ---------------------------------------------------

                  As provided  in the  Distribution  Agreement,  the Company may
instruct the  Distributors to suspend  solicitation of offers to purchase at any
time,  and upon  receipt  of at least one Market  Day's  prior  notice  from the
Company,  the Distributors will each forthwith suspend  solicitation  until such
time as the Company has advised them that solicitation of offers to purchase may
be resumed.

                  If the  Distributors  receive  the  notice  from  the  Company
contemplated by Section 3(b) or 4(b) of the  Distribution  Agreement,  they will
promptly suspend  solicitation and will only resume  solicitation as provided in
the Distribution Agreement. If the Company is required, pursuant to Section 4(b)
of the Distribution  Agreement,  to prepare an amendment or supplement,  it will
promptly furnish each Distributor with the proposed amendment or supplement;  if
the Company  decides to amend or supplement  the  Registration  Statement or the
Prospectus  relating to the Notes, it will promptly advise each  Distributor and
will  furnish each  Distributor  with the proposed  amendment or  supplement  in
accordance  with the  terms of the  Distribution  Agreement.  The  Company  will
promptly file such  amendment or  supplement  with the  Commission,  provide the
Distributors  with copies of any such  amendment or  supplement,  confirm to the
Distributors  that  such  amendment  or  supplement  has  been  filed  with  the
Commission and advise the Distributors that solicitation may be resumed.

                  Any such suspension shall not affect the Company's obligations
under the Distribution Agreement;  and in the event that at the time the Company
suspends  solicitation  of offers to purchase  there shall be any offers already
accepted by the Company  outstanding for  settlement,  the Company will have the
sole  responsibility  for  fulfilling  such  obligations.  The  Company  will in
addition promptly advise the Distributors and the Trustee if such offers are not
to be settled  and if copies of the  Prospectus  as in effect at the time of the
suspension  may not be  delivered  in  connection  with the  settlement  of such
offers.

Acceptance of Offers
- --------------------

                  Each  Distributor  will  promptly  advise the Company,  at its
option orally or in writing, of each reasonable offer to purchase Notes received
by it, other than those rejected by such  Distributor.  Each Distributor may, in
its discretion reasonably exercised,  without notice to the Company,  reject any
offer  received by it, in whole or in part. The Company will have the sole right
to accept offers to purchase Notes and may reject any such offer, in whole or in
part.  If the  Company  accepts or rejects  an offer,  in whole or in part,  the
Company will promptly so notify the Presenting Distributor.

Confirmation
- ------------

                  For each accepted offer, the Presenting Distributor will issue
a  confirmation,  in writing,  to the  purchaser,  with a copy to the  Company's
Treasury Department, setting forth the 
                                      C-6
<PAGE>
Purchase  Information  (as defined  under II below with respect to  Certificated
Notes and III below with respect to  Book-Entry  Notes) and delivery and payment
instructions; provided, however, that, in the case of the confirmation issued to
the purchaser,  no confirmation shall be delivered to the purchaser prior to the
delivery of the Prospectus referred to below.

Determination of Settlement Date
- --------------------------------

                  The receipt of immediately  available  funds by the Company in
payment for a Note and (i) in the case of Certificated Notes, the authentication
and issuance of such Note and (ii) in the case of Book-Entry Notes, entry by the
Presenting  Distributor  of an SDFS  deliver  order  through  DTC's  Participant
Terminal System to credit such Note to the account of a Participant  purchasing,
or acting for the  purchaser of, such Note,  shall,  with  respect to such Note,
constitute  "settlement."  All offers accepted by the Company will be settled on
the third Market Day next  succeeding the date of acceptance,  unless  otherwise
agreed by the purchaser and the Company.  The settlement date shall be specified
upon receipt of an offer to purchase. Prior to 3:00 p.m., New York City time, on
the Market Day prior to the  settlement  date,  the Company  will  instruct  the
Trustee to authenticate  and deliver the Notes no later than 2:15 p.m., New York
City time, on the settlement date except as to Book-entry Notes described below.

Delivery of Prospectus
- ----------------------

                  A  copy  of  the  Prospectus  as  most  recently   amended  or
supplemented on the date of delivery  thereof (except as provided below) must be
delivered to a purchaser  prior to or together  with the earlier of the delivery
of (i) the written confirmation  provided for above, and (ii) any Note purchased
by such  purchaser.  (For this  purpose,  entry of an SDFS deliver order through
DTC's  Participant  Terminal  System  to  credit  a  Note  to the  account  of a
Participant  purchasing,  or acting for the purchaser of, a Note shall be deemed
to  constitute  delivery  of such  Note.)  The  Company  shall  ensure  that the
Presenting  Distributor  receives copies of the Prospectus and each amendment or
supplement  thereto  (including   appropriate   Pricing   Supplements)  in  such
quantities and within such time limits as will enable the Presenting Distributor
to deliver such  confirmation  or Note to a purchaser as  contemplated  by these
procedures  and in compliance  with the first  sentence of this  paragraph.  If,
since the date of acceptance of a purchaser's  offer,  the Prospectus shall have
been  supplemented  solely to reflect any sale of Notes on terms  different from
those  agreed to between the Company  and such  purchaser  or a change in posted
rates not applicable to such  purchaser,  such  purchaser  shall not receive the
Prospectus  as  supplemented  by such new  supplement,  but  shall  receive  the
Prospectus as  supplemented to reflect the terms of the Notes being purchased by
such  purchaser and otherwise as most recently  amended or  supplemented  on the
date of delivery of the Prospectus.
                                      C-7
<PAGE>
Authenticity of Signatures
- --------------------------

                  The Company will cause the Trustee to furnish the Distributors
from  time  to time  with  the  specimen  signatures  of  each of the  Trustee's
officers,  employees  or  agents  who have been  authorized  by the  Trustee  to
authenticate  Notes, but no Distributor will have any obligation or liability to
the Company or the Trustee in respect of the  authenticity  of the  signature of
any officer,  employee or agent of the Company or the Trustee on any Note or the
Global Note (as defined in Part III).

Advertising Expenses
- --------------------

                  The Company will determine with the Distributors the amount of
advertising that may be appropriate in offering the Notes.  Advertising expenses
will be paid by the Company.

Market Day
- ----------

                  "Market  Day"  means  (a) with  respect  to any  Note  (unless
otherwise  provided in this  definition),  any day that is a Business Day in The
City of New York,  (b) with respect to LIBOR Notes only, any Business Day in New
York that is also a London  Market  Day,  (c) with  respect to Foreign  Currency
Notes (other than Foreign Currency Notes  denominated in European Currency Units
("ECUs"))  only,  any day  that is a  Business  Day  both in New York and in the
principal financial center in the country of the Specified Currency and (d) with
respect  to  Foreign  Currency  Notes  denominated  in ECU,  any date  that is a
Business Day in The City of New York that is designated as an ECU settlement day
by the ECU Banking  Association in Paris or otherwise  generally regarded in the
ECU interbank market as a day in which payments in ECU are made.

Trustee Not to Risk Funds
- -------------------------

                  Nothing  herein shall be deemed to require the Trustee to risk
or expend its own funds in connection with any payment made to the Company,  the
Distributors,  DTC or any Holder of a Note,  it being  understood by all parties
that payments made by the Trustee to the Company,  the Distributors,  DTC or any
Holder of a Note shall be made only to the extent that funds are provided to the
Trustee for such purpose.

PART II: ADMINISTRATIVE PROCEDURES FOR CERTIFICATED NOTES
- ---------------------------------------------------------

Form and Denominations
- ----------------------

                  The   Certificated   Notes  shall  be  issued  only  in  fully
registered form in denominations of $1,000 and integral multiples of $1,000, or,
in the case of Foreign  Currency Notes, in such minimum  denomination,  not less
than the equivalent of $1,000, and such greater
                                      C-8
<PAGE>
denomination or  denominations  in excess thereof,  as shall be set forth in the
applicable Pricing Supplement.

Transfers and Exchanges
- -----------------------

                  A Certificated  Note may be presented for transfer or exchange
at the principal  corporate trust office of the Trustee in The City of New York.
Certificated  Notes will be  exchangeable  for other  Certificated  Notes of any
authorized  denominations  and of like tenor and in a like  aggregate  principal
amount,  upon  surrender  of  the  Certificated  Notes  to be  exchanged  at the
corporate  trust  office  of  the  Trustee.   Certificated  Notes  will  not  be
exchangeable for Book-Entry Notes.

Payment at Maturity
- -------------------

                  Upon presentation of each  Certificated Note at Maturity,  the
Trustee  (or a duly  authorized  Paying  Agent)  will pay the  principal  amount
thereof,  together with any premium and accrued  interest due at Maturity.  Such
payment  will  be  made  in  immediately  available  funds,  provided  that  the
Certificated  Note is  presented in time for the Paying Agent to make payment in
such funds in accordance  with its normal  procedures.  The Company will provide
the Trustee (and any Paying  Agent) with funds  available  for immediate use for
such purpose.  Certificated  Notes presented at Maturity will be canceled by the
Trustee as provided in the Indenture. For special provisions relating to Foreign
Currency Notes, see the section entitled "Special Provisions Relating to Foreign
Currency Notes" in the Prospectus Supplement.

Details for Settlement
- ----------------------

                  For each offer for Certificated Notes accepted by the Company,
the  Presenting   Distributor  shall  communicate  to  the  Company's   Treasury
Department  prior to 3:00 p.m.,  New York City time, on the Market Day preceding
the  settlement  date,  by telephone,  telex,  facsimile  transmission  or other
acceptable means, the following information (the "Purchase Information"):

                  1.       Exact  name in  which  the  Note or  Notes  are to be
                           registered ("registered owner").

                  2.       Exact address of registered  owner and, if different,
                           the  address  for  delivery,  notices  and payment of
                           principal and any premium and interest.

                  3.       Taxpayer identification number of registered owner.

                  4.       Principal   amount   of  each   Note  in   authorized
                           denominations to be delivered to registered owner.
                                      C-9
<PAGE>
                  5.       Stated Maturity of each Note.

                  6.       In the case of Fixed Rate Notes, the interest rate of
                           each Note,  whether such Note is an  Amortizing  Note
                           and, if so, the amortization schedule; in the case of
                           Floating  Rate Notes or Indexed  Notes,  the interest
                           rate  formula,  the Spread or Spread  Multiplier  (if
                           any), the maximum or minimum interest rate limitation
                           (if any), the Calculation or Determination Agent, the
                           Calculation  Dates,  the Initial  Interest  Rate, the
                           Interest Payment Dates, the Regular Record Dates, the
                           Index Maturity,  the Interest Determination Dates and
                           the Interest Reset Dates, in each case, to the extent
                           applicable with respect to each Note.

                  7.       Redemption  and/or repayment  provisions,  if any, of
                           each Note.

                  8.       Trade date of each Note.

                  9.       Settlement date (Issue Date) of each Note.

                  10.      Presenting  Distributor's  commission  (to be paid in
                           the form of a discount from the proceeds  remitted to
                           the Company upon settlement).

                  11.      Price.

                  12.      Currency or currency unit in which each Note is to be
                           denominated  and exchange rate applicable to purchase
                           Foreign  Currency  Notes  to  be  paid  for  in  U.S.
                           dollars.

                  13.      Original issue discount, if any.

                  14.      Whether  the  Company  has the  option to extend  the
                           Stated  Maturity of the Note and if so, the Extension
                           Period,  the Election Dates and the Final Maturity of
                           such Note.

                  15.      Whether the Note is a Renewable  Note, and if it is a
                           Renewable  Note,  the Initial  Maturity  Date and the
                           Final Maturity Date.

                  16.      In  the  case  of an  Indexed  Note,  any  additional
                           information  relevant to determination of the amounts
                           of  principal  (and  premium,  if  any)  or  interest
                           payable.
                                      C-10
<PAGE>
                  17.      Any additional applicable terms of each Note.

                  The Issue Date of, and the settlement  date for,  Certificated
Notes will be the same.  Before  accepting  any offer to  purchase  Certificated
Notes to be settled in less than three  Market  Days,  the Company  shall verify
that the Trustee will have adequate time to prepare and authenticate the Notes.

                  Immediately  after  receiving  the  details for each offer for
Certificated  Notes from the  Presenting  Distributor,  the Company will,  after
recording the details and any necessary  calculations,  communicate the Purchase
Information by telephone,  telex,  facsimile  transmission  or other  acceptable
means, to the Trustee. Each such instruction given by the Company to the Trustee
shall constitute a continuing  representation and warranty by the Company to the
Trustee and the  Distributors  that (i) the  issuance and delivery of such Notes
have been duly and validly  authorized by the Company and (ii) such Notes,  when
completed,  authenticated and delivered,  shall constitute the valid and legally
binding obligation of the Company.  The Trustee will assign to and enter on each
Note a transaction number.

                  The Company will deliver to the Trustee a pre-printed four-ply
packet for such  Certificated  Note,  which  packet will  contain the  following
documents in forms that have been approved by the Company,  the Distributors and
the Trustee:

         1.       Certificated Note with customer confirmation.

         2.       Stub One - For the Trustee.

         3.       Stub Two - For the Presenting Distributor.

         4.       Stub Three - For the Company.

                  Prior to 2:00  p.m.,  New York City  time,  on the  Settlement
Date,  the Trustee will complete such  Certificated  Note and will  authenticate
such  Certificated Note and deliver it (with the confirmation) and Stubs One and
Two to such  Distributor,  and such Distributor will acknowledge  receipt of the
Note by stamping or otherwise  marking Stub One and returning it to the Trustee.
The Trustee will send Stub Three to the Company by first-class mail.

Settlement; Note Deliveries and Cash Payment
- --------------------------------------------

                  The Company will deliver to the Trustee at the commencement of
the  program  and  from  time to  time  thereafter  a  supply  of duly  executed
Certificated  Notes with  pre-printed  control numbers adequate to implement the
program. Upon the receipt of appropriate documentation and instructions from the
Company in accordance with the applicable Officers' Certificate and verification
thereof,  the Trustee  will cause the  Certificated  Notes to be  completed  and
authenticated and hold the Certificated Notes for delivery against payment.
                                      C-11
<PAGE>
                  The  Trustee  will  deliver the  Certificated  Notes (with the
confirmation)  and Stubs One and Two, in accordance with  instructions  from the
Company,  to the  Presenting  Distributor.  If the  Distributor  is placing such
Certificated  Notes as agent,  such delivery will be made for the benefit of the
purchaser only against receipt and the Presenting  Distributor  will acknowledge
receipt of the Notes through a broker's receipt. Such delivery will be made only
against such acknowledgement of receipt and evidence that instructions have been
given for  payment  to the  Company  at such  account  of the  Company as it may
specify in writing,  in immediately  available  funds, of an amount equal to the
principal  amount  of  such  Notes,  less  the  applicable  commission.  If  the
Presenting Distributor in any instance advances its own funds, the Company shall
not use any of the proceeds of such sale to acquire securities.

                  If the  Distributor  is  placing  such  Certificated  Notes as
agent,  the Presenting  Distributor,  as the Company's  agent,  will deliver the
Notes  (with the  written  confirmation  provided  for  above) to the  purchaser
thereof  against  payment  therefor by such purchaser in  immediately  available
funds.

                  Delivery of any confirmation or Note to a purchaser thereof by
a  Distributor,  acting as agent or principal,  will be made in compliance  with
"Delivery of Prospectus" in Part I above.

                  Certificated Notes delivered to the Distributors will be sent:

                  If sent to _________________________







                  If sent to _________________________






Fails (Distributor Acting as Agent)
- -----------------------------------

                  In the event that a purchaser shall fail to accept delivery of
and make payment for a Certificated  Note on the settlement date, the Presenting
Distributor will notify the Trustee and the
                                      C-12
<PAGE>
Company, by telephone,  confirmed in writing. If such Certificated Note has been
delivered to the Presenting Distributor,  as the Company's agent, the Presenting
Distributor  shall return such Note to the Trustee.  If funds have been advanced
for the purchase of such Note,  the Trustee  will,  immediately  upon receipt of
such Note,  debit the account of the Company for the amount so advanced  and the
Trustee shall refund the payment  previously made by the Presenting  Distributor
in  immediately  available  funds.  Such payments will be made on the settlement
date, if possible,  and in any event not later than the Market Day following the
settlement  date.  If the fail shall have occurred for any reason other than the
failure of the Presenting Distributor to provide the Purchase Information to the
Company  or to  provide  a  confirmation  to the  purchaser,  the  Company  will
reimburse the Presenting  Distributor on an equitable  basis for its loss of the
use of funds  during the period  when the funds were  credited to the account of
the Company.

                  Immediately upon receipt of the  Certificated  Note in respect
of which the fail  occurred,  the Trustee will make  appropriate  entries in its
records to reflect the fact that the Note was never  issued and the Note will be
canceled and disposed of as provided in the Indenture.

PART III: ADMINISTRATIVE PROCEDURES FOR BOOK-ENTRY NOTES
- --------------------------------------------------------

                  In connection with the  qualification  of the Book-Entry Notes
for  eligibility  in the book-entry  system  maintained by DTC, the Trustee will
perform the custodial,  document control and administrative  functions described
below, in accordance with its obligations under a Letter of Representations (the
"Letter") from the Company and the Trustee to DTC dated as of April 9, 1997, and
a Medium-Term Note Certificate Agreement between the Trustee and DTC dated as of
August 17, 1989, and its  obligations as a participant in DTC,  including  DTC's
Same-Day Funds Settlement System ("SDFS").

Form, Denominations and Registration
- ------------------------------------

                  All  Book-Entry  Notes of the same  tenor and  having the same
Issue Date, will be represented  initially by a single note (a "Global Note") in
fully registered form without coupons. Unless otherwise stated in the applicable
Pricing  Supplement,  Book-Entry Notes will represent Notes  denominated in U.S.
dollars.  Global  Notes will be issued in  denominations  of $1,000 and integral
multiples thereof.  Global Notes will be denominated in principal amounts not in
excess of  $150,000,000.  If one or more  Book-Entry  Notes  having an aggregate
principal  amount in excess of  $150,000,000  would,  but not for the  preceding
sentence,  be represented by a single Global Note,  then one Global Note will be
issued to represent each  $150,000,000  principal amount of such Book-Entry Note
or Notes and an additional Global Note will be issued to represent any remaining
principal  amount of such  Book-Entry Note or Notes. In such a case, each of the
Global Notes  representing  such  Book-Entry note or Notes shall be assigned the
same CUSIP  number.  Each Global Note will be  registered  in the name of Cede &
Co.,  as  nominee  for  DTC,  on the  Security  Register  maintained  under  the
Indenture.  The beneficial  owner of a Book-Entry  Note (or one or more indirect
participants  in DTC  designated  by  such  owner)  will  designate  one or more
participants  in DTC (with respect to such Note, the  "Participants")  to act as
agent or  
                                      C-13
<PAGE>
agents for such owner in connection  with the  book-entry  system  maintained by
DTC, and DTC will record in book-entry  form, in  accordance  with  instructions
provided by such Participants, a credit balance with respect to such Note in the
account of such Participants. The ownership interest of such beneficial owner in
such Note will be recorded  through the records of such  Participants or through
the separate records of such Participants and one or more indirect  participants
in DTC.

CUSIP Numbers
- -------------

                  The  Company has  arranged  with the CUSIP  Service  Bureau of
Standard & Poor's  Corporation  (the "CUSIP Service Bureau") for the reservation
of a series of CUSIP numbers (including tranche numbers), such series consisting
of  approximately  900 CUSIP  numbers and relating to Global Notes  representing
Book-Entry  Notes.  The Company has  obtained  from the CUSIP  Service  Bureau a
written list of such reserved  CUSIP numbers and has delivered it to the Trustee
and DTC.  The Trustee  will assign  CUSIP  numbers  serially to Global  Notes as
described  below  under  "Details  for  Settlement."  DTC will  notify the CUSIP
Service Bureau  periodically  of the CUSIP numbers that the Trustee has assigned
to Global Notes. The Trustee will notify the Company at the time when fewer than
100 of the reserved CUSIP numbers remain unassigned to the Global Notes; and the
Company will reserve  additional  CUSIP  numbers for  assignment to Global Notes
representing Book-Entry Notes. Upon obtaining such additional CUSIP numbers, the
Company shall deliver a list of such additional CUSIP numbers to the Trustee and
DTC.

Transfers and Exchanges for the Purpose of Consolidation
- --------------------------------------------------------

                  Transfers of a Book-Entry  Note will be  accomplished  by book
entries made by DTC and, in turn, by Participants (and, in certain cases, one or
more indirect  participants  in DTC) acting on behalf of beneficial  transferors
and transferees of such Note.

                  The Trustee may upon notice to the Company  deliver to DTC and
the CUSIP Service  Bureau at any time a written notice (a copy of which shall be
attached to the Global Note  resulting  from such  exchange)  specifying (i) the
CUSIP numbers of two or more outstanding Global Notes that represent  Book-Entry
Notes of the same tenor and having the same Issue Date,  and for which  interest
(if any) has been paid to the same date,  (ii) a date  occurring at least thirty
days after such written  notice is delivered and at least thirty days before the
next Interest  Payment Date (if any) for such Notes,  on which such Global Notes
shall be exchanged  for a single  replacement  Global Note and (iii) a new CUSIP
number to be assigned to such  replacement  Global Note.  Upon receipt of such a
notice,  DTC will send to its  Participants  (including  the  Trustee) a written
reorganization  notice to the effect that such exchange will occur on such date.
Prior to the  specified  exchange  date,  the Trustee  will deliver to the CUSIP
Service  Bureau a written  notice  setting  forth such exchange date and the new
CUSIP number and stating that, as of such  exchange  date,  the CUSIP numbers of
the  Global  Notes to be  exchanged  will no longer be valid.  On the  specified
exchange  date,  the Trustee will exchange such Global Notes for a single Global
Note bearing the new CUSIP number and the CUSIP numbers of the exchanged Global
                                      C-14
<PAGE>
Notes will, in accordance with CUSIP Service Bureau procedures,  be canceled and
not immediately reassigned.

Notice of Interest Payment Dates and Regular Record Dates
- ---------------------------------------------------------

                  To the extent  then known,  on the first  Market Day of March,
June,  September,  and  December of each year,  the Trustee  will deliver to the
Company and DTC a written list of Record Dates and Interest  Payment  Dates that
will occur with respect to Floating Rate  Book-Entry  Notes during the six-month
period beginning on such first Market Day.

Payments of Principal and Interest
- ----------------------------------

                  (a)  Payments of Interest  Only.  Promptly  after each Regular
Record Date,  the Trustee  will deliver to the Company and DTC a written  notice
specifying by CUSIP number the amount of interest to be paid on each Global Note
on the  following  Interest  Payment  Date (other than an Interest  Payment Date
coinciding  with  Maturity)  and the total of such  amounts.  The  Company  will
confirm with the Trustee the amount payable on each Global Note on such Interest
Payment  Date.  DTC will confirm the amount  payable on each Global Note on such
Interest Payment Date by reference to the daily or weekly bond reports published
by Standard & Poor's Corporation.  The Company will pay to the Trustee the total
amount of interest due on such  Interest  Payment Date (other than at Maturity),
and the  Trustee  will pay such amount to DTC at the times and in the manner set
forth below under "Manner of Payment".

                  (b) Payments at Stated Maturity.  On or about the first Market
Day of each  month,  the Trustee  will  deliver to the Company and DTC a written
list of principal  and  interest to be paid on each Global Note  maturing in the
following  month.  The Company,  the Trustee and DTC will confirm the amounts of
such principal and interest payments with respect to each such Global Note on or
about the fifth Market Day  preceding  the Stated  Maturity of such Global Note.
The Company will pay to the Trustee,  as the paying agent,  the principal amount
of such Global Note,  together with interest due at such Stated  Maturity.  Upon
surrender  of a Global  Note,  the Trustee  will pay such  amounts to DTC at the
times and in the manner set forth below under "Manner of Payment". If any Stated
Maturity of a Global Note representing Book-Entry Notes is not a Market Day, the
payment due on such day shall be made on the next  succeeding  Market Day and no
interest  shall accrue on such payment for the period from and after such Stated
Maturity. Promptly after payment to DTC of the principal and any interest due at
the Stated  Maturity of such Global  Note,  the Trustee  will cancel such Global
Note and return such Global Note to the Company in accordance  with the terms of
the Indenture.

                  (c) Payment upon Redemption.  The Trustee will comply with the
terms of the Letter with regard to  redemptions  or repayments of the Book-Entry
Notes.  In the case of  Book-Entry  Notes stated by their terms to be redeemable
prior to Stated  Maturity,  [at least 60 calendar days before the date fixed for
redemption] (the "Redemption Date"), the Company shall notify the Trustee of the
Company's election to redeem such Book-Entry Notes in whole or in part and the
                                      C-15
<PAGE>
principal  amount  of such  Book-Entry  Notes  to be so  redeemed.  At  least 30
calendar days but not more than 60 calendar days prior to the  Redemption  Date,
the Trustee shall notify DTC of the Company's election to redeem such Book-Entry
Notes.  The Trustee shall notify the Company and DTC of the CUSIP numbers of the
particular  Book-Entry  Notes to be  redeemed  either  in whole or in part.  The
Company,  the Trustee and DTC will confirm the amounts of such principal and any
premium and interest  payable with  respect to each such  Book-Entry  Note on or
about the fifth Market Day  preceding  the  Redemption  Date of such  Book-Entry
Note.  The Company will pay the  Trustee,  in  accordance  with the terms of the
Indenture,  the amount  necessary  to redeem  each such  Book-Entry  Note or the
applicable  portion of each such  Book-Entry  Note.  The  Trustee  will pay such
amount to DTC at the times and in the manner set forth  herein.  Promptly  after
payment  to DTC of the  amount due on the  Redemption  Date for such  Book-Entry
Note,  the Trustee shall cancel any such  Book-Entry  Note redeemed in whole and
shall deliver it to the Company with an  appropriate  debit advice.  If a Global
Note is to be  redeemed in part,  the  Trustee  will cancel such Global Note and
issue a Global Note which shall  represent the remaining  portion of such Global
Note and shall bear the CUSIP number of the canceled Global Note.

                  (d) Manner of Payment.  The total amount of any  principal and
interest due on Global Notes on any Interest  Payment Date or at Maturity  shall
be paid by the Company to the  Trustee in  immediately  available  funds on such
date available for use as of 9:30 A.M. New York City time. The Company will make
such payment on such Global Notes by wire  transfer to the Trustee.  The Company
will confirm instructions  regarding payment in writing to the Trustee. Prior to
1:00 p.m., New York City time, on each date of Maturity of a Book-Entry  Note or
as soon as possible  thereafter,  the Trustee will pay by separate wire transfer
(using Fedwire message entry instructions in a form previously specified by DTC)
to an account at the Federal  Reserve Bank of New York  previously  specified by
DTC in funds  available  for  immediate  use by DTC,  each  payment of principal
(together with interest  thereon) due at Maturity on Book-Entry  Notes.  On each
Interest  Payment Date,  interest payment shall be made to DTC in same day funds
in  accordance  with  existing   arrangements   between  the  Trustee  and  DTC.
Thereafter,  on each  such  date,  DTC will  pay,  in  accordance  with its SDFS
operating  procedures  then in  effect,  such  amounts  in funds  available  for
immediate use to the respective Participants in whose names the Book-Entry Notes
represented  by  such  Global  Notes  are  recorded  in  the  book-entry  system
maintained  by DTC.  NEITHER THE  COMPANY NOR THE TRUSTEE  SHALL HAVE ANY DIRECT
RESPONSIBILITY  OR LIABILITY FOR THE PAYMENT BY DTC TO SUCH  PARTICIPANTS OF THE
PRINCIPAL OF AND ANY PREMIUM AND INTEREST ON THE BOOK-ENTRY NOTES.

                  (e) Withholding  Taxes. The amount of any taxes required under
applicable  law to be withheld  from any interest  payment on a Book-Entry  Note
will be determined and withheld by the Participant,  indirect participant in DTC
or other person  responsible for forwarding  payments and materials  directly to
the beneficial owner of such Note.

Details for Settlement
- ----------------------

                  For each offer for  Book-Entry  Notes accepted by the Company,
the  Presenting   Distributor  shall  communicate  to  the  Company's   Treasury
Department prior to 11:00 a.m., New
                                      C-16
<PAGE>
York City time, on the first Market Day after the sale date (or on the sale date
if such sale is to be settled  within  one Market  Day),  by  telephone,  telex,
facsimile transmission or other acceptable means, the following information (the
"Purchase Information"):

                  1.       Principal amount of the Notes.

                  2.       Stated Maturity of the Notes.

                  3.       In the case of Fixed Rate Notes, the interest rate of
                           the Notes  and  whether  such  Note is an  Amortizing
                           Note, and, if so, the amortization  schedule;  in the
                           case  of  Floating  Rate  Notes  or  Indexed   Notes,
                           interest   rate   formula,   the   Spread  or  Spread
                           Multiplier (if any), the maximum or minimum  Interest
                           rate   limitation  (if  any),   the   Calculation  or
                           Determination   Agent,  the  Calculation  Dates,  the
                           Initial  Interest Rate,  the Interest  Payment Dates,
                           the Regular  Record Dates,  the Index  Maturity,  the
                           Interest  Determination  Dates and the Interest Reset
                           Dates,  in each case, to the extent  applicable  with
                           respect to the Notes.

                  4.       Redemption  and/or repayment  provisions,  if any, of
                           the Notes.

                  5.       Trade date of the Notes.

                  6.       Settlement date (Issue Date) of the Notes.

                  7.       Presenting  Distributor's  commission  (to be paid in
                           the form of a discount from the proceeds  remitted to
                           the Company upon settlement).

                  8.       Price.

                  9.       Currency or  currency  unit in which the Notes are to
                           be  denominated   and  exchange  rate  applicable  to
                           purchase  Foreign  Currency  Notes  payable  in  U.S.
                           dollars.

                  10.      Original issue discount, if any.

                  11.      Whether  the  Company  has the  option to extend  the
                           Stated  Maturity of the Note and if so, the Extension
                           Period,  the Election Dates and the Final Maturity of
                           such Note.
                                      C-17
<PAGE>
                  12.      Whether the Note is a Renewable  Note, and if it is a
                           Renewable  Note,  the Initial  Maturity  Date and the
                           Final Maturity Date.

                  13.      In  the  case  of an  Indexed  Note,  any  additional
                           information  relevant to determination of the amounts
                           of  principal  (and  premium,  if  any)  or  interest
                           payable.

                  14.      Any additional applicable terms of the Notes.

                  The Issue Date of, a-Entry Notes will be the same.
Before  accepting any offer to purchase  Book-Entry  Notes to be settled in less
than three  Market  Days,  the Company  shall  verify that the Trustee will have
adequate time to prepare and authenticate the Global Notes.

                  If the initial  interest rate for a Floating  Rate  Book-Entry
Note has not  been  determined  at the time  that  the  foregoing  procedure  is
completed,  the procedures  described in the following two  paragraphs  shall be
completed as soon as such rate has been  determined but no later than 12:00 Noon
and 2:00 p.m.,  New York City time, as the case may be, on the Market Day before
the settlement date.

                  Immediately  after  receiving  the  details for each offer for
Book-Entry Notes from the Presenting  Distributor and in any event no later than
12:00 Noon,  New York City time, on the first Market Day after the sale date (or
on the sale date if such sale is to be  settled  within  one  Market  Day),  the
Company  will,  after  recording  the  details and any  necessary  calculations,
communicate the Purchase Information by telephone, telex, facsimile transmission
or other acceptable  means, to the Trustee.  Each such instruction  given by the
Company to the Trustee shall constitute a continuing representation and warranty
by the Company to the Trustee and the  Distributors  that (i) the  issuance  and
delivery of such Note have been duly and validly  authorized  by the Company and
(ii) such Note, when duly issued, shall constitute the valid and legally binding
obligation of the Company.

                  Immediately after receiving the Purchase  Information from the
Company  and in any event no later  than 2:00 P.M.,  New York City time,  on the
first  Market Day after the sale date (or on the sale date if such sale is to be
settled  within one Market  Day),  the Trustee will assign a CUSIP number to the
Global Note representing such Book-Entry Note and will telephone the Company and
advise the Company of such CUSIP number and, as soon  thereafter as practicable,
the Company shall notify the Presenting  Distributor  of such CUSIP number.  The
Trustee will enter a pending deposit message through DTC's Participant  Terminal
System,  providing  settlement  information  to  DTC  (which  shall  route  such
information  to Standard & Poor's  Corporation).  Standard & Poor's  Corporation
will use the information  received in the pending deposit message to include the
amount of any  interest  payable and certain  other  information  regarding  the
related Global Note in the appropriate  daily or weekly bond report published by
Standard & Poor's Corporation.
                                      C-18
<PAGE>
Settlement; Global Note Delivery and Cash Payment
- -------------------------------------------------

                  The Company will deliver to the Trustee at the commencement of
the program and from time to time  thereafter a supply of duly  executed  Global
Notes with pre-printed  control numbers adequate to implement the program.  Upon
the receipt of appropriate  documentation  and instructions  from the Company in
accordance with the applicable Officers'  Certificate and verification  thereof,
the Trustee will cause the Global Note to be  completed  and  authenticated  and
hold the Global Note for delivery against payment.

                  Prior to 10:00  a.m.,  New York City time,  on the  Settlement
Date, the Trustee will enter  instructions  through DTC's  Participant  Terminal
System, using the function MT II, and DTC will credit such Note to the Trustee's
participant  account  at DTC.  Prior to 2:00 p.m.,  New York City  time,  on the
Settlement  Date,  the Trustee will enter an SDFD deliver  order  through  DTC's
Participant  Terminal  System  instructing  DTC to (i)  debit  such  Note to the
Trustee's   participant   account  and  credit  such  Note  to  the   Presenting
Distributor's  participant  account and (ii) debit the Presenting  Distributor's
settlement  account and credit the  Trustee's  settlement  account for an amount
equal  to the  price  of  such  Note  less  such  Distributor's  commission  (in
accordance with SDFS operating procedures in effect on the Settlement Date). The
entry of such a deliver order shall constitute a representation  and warranty by
the Trustee to DTC that (i) the Global Note  representing  such  Book-Entry Note
has been executed,  delivered and  authenticated and (ii) the Trustee is holding
such Global Note pursuant to the relevant Medium-Term Note Certificate Agreement
between the Trustee and DTC.

                  Prior to 2:00 p.m., New York City time, on the Settlement Date
unless  the  Presenting  Distributor  is the end  purchaser  of such  Note,  the
Presenting   Distributor   will  enter  an  SDFS  deliver  order  through  DTC's
Participant  Terminal  System  instructing  DTC (i) to debit  such  Note to such
Distributor's  participant  account  and  credit  such  Note to the  Participant
accounts  of the  Participants  with  respect to such Note and (ii) to debit the
settlement  accounts of such  Participants and credit the settlement  account of
such  Distributor  for an amount equal to the price of such Note (in  accordance
with SDFS operating procedures in effect on the settlement date).

                  Transfers of funds are subject to extension in accordance with
any extension of Fedwire closing  deadlines and in the other events specified in
the SDFS operating procedures in effect on the settlement date.

                  The Trustee,  upon confirming receipt of such funds, will wire
transfer the amount transferred to the Trustee, in funds available for immediate
use,  for the  account of the  Company,  to account no.  __________  at [name of
bank], [location of bank] (ABA No. __________).

                  Unless the Presenting Distributor is the end purchaser of such
Note, such  Distributor  will confirm the purchase of such Note to the purchaser
either  by  transmitting  to  the  Participants  with  respect  to  such  Note a
confirmation order or orders through DTC's  institutional  delivery system or by
mailing a written confirmation to such purchaser.
                                      C-19
<PAGE>
Fails
- -----

                  If  settlement  of  a  Book-Entry   Note  is   rescheduled  or
cancelled,  the  Company  shall  notify the  Trustee,  and upon  receipt of such
notice,  the Trustee will deliver to DTC,  through  DTC's  Participant  Terminal
System,  a  cancellation  message to such effect by no later than 2:00 p.m., New
York City time, on the Market Day immediately preceding the scheduled settlement
date.

                  If the Agent or Trustee has not entered an SDFS deliver  order
with  respect to a Book-Entry  Note,  then upon  written  request  (which may be
evidenced by telecopy transmission) of the Company, the Trustee shall deliver to
DTC, through DTC's Participant  Terminal System, as soon as practicable,  but no
later  than 2:00  p.m.,  New York City time,  on any  Market  Day, a  withdrawal
message instructing DTC to debit such Note to the Trustee's participant account.
DTC will process the withdrawal message, provided that the Trustee's participant
account  contains a principal amount of the Global Note  representing  such Note
that is at least  equal to the  principal  amount to be debited.  If  withdrawal
messages are processed with respect to all the Book-Entry Notes represented by a
Global  Note,  the  Trustee  will  mark  such  Global  Note  "cancelled",   make
appropriate entries in the Trustee's records and send such cancelled Global Note
to the  Company.  The CUSIP  number  assigned  to such  Global  Note  shall,  in
accordance  with  CUSIP  Service  Bureau   procedures,   be  cancelled  and  not
immediately reassigned. If withdrawal messages are processed with respect to one
or more, but not all, of the Book-Entry Notes  represented by a Global Note, the
Trustee will exchange such Global Note for two Global Notes,  one of which shall
represent such Book-Entry Note or Notes and shall be cancelled immediately after
issuance and the other of which shall represent the remaining  Book-Entry  Notes
previously  represented by the surrendered  Global Note and shall bear the CUSIP
number of the surrendered Global Note.

                  If the purchase  price for any  Book-Entry  Note is not timely
paid to the Participants  with respect to such Note by the beneficial  purchaser
thereof (or a person, including an indirect participant in DTC, acting on behalf
of such purchaser),  such Participants and, in turn, the Presenting  Distributor
may enter an SDFS  deliver  order  through  DTC's  Participant  Terminal  System
debiting such Note to such Distributor's  participant account and crediting such
Note free to the participant account of the Trustee and shall notify the Trustee
and the Company thereof.  Thereafter,  the Trustee,  (i) will immediately notify
the Company,  once the Trustee has confirmed that such Note has been credited to
its participant  account,  and the Company shall immediately transfer by Fedwire
(in immediately  available funds) to the Presenting  Distributor an amount equal
to the price of such Note  which was  previously  sent by wire  transfer  to the
account of the Company maintained at _______________,  and (ii) the Trustee will
deliver the  withdrawal  message and take the related  actions  described in the
preceding  paragraph.  Such  debits and credits  will be made on the  settlement
date, if possible,  and in any event not later than 5:00 p.m. __________ time on
the  following  Market Day. If the fail shall have occurred for any reason other
than failure of the Presenting  Distributor to provide the Purchase  Information
to the Company or to provide a confirmation  to the purchaser,  the Company will
reimburse the
                                      C-20
<PAGE>
Presenting  Distributor  on an equitable  basis for its loss of the use of funds
during the period when the funds were credited to the account of the Company.

                  Notwithstanding the foregoing, upon any failure to settle with
respect to a Book- Entry Note,  DTC may take any actions in accordance  with its
SDFS operating  procedures  then in effect.  In the event of a failure to settle
with respect to one or more, but not all, of the  Book-Entry  Notes to have been
represented  by a Global Note,  the Trustee will provide for the  authentication
and issuance of a Global Note  representing  the other  Book-Entry Notes to have
been  represented by such Global Note and will make  appropriate  entries in its
records.
                                      C-21

                                  July 2, 1998



Arizona Public Service Company
400 North Fifth Street
Phoenix, Arizona  85004

Ladies and Gentlemen:

         Reference is made to (a) your proposed  offering of up to  $400,000,000
of  your  Securities  (the  "Securities"),   as  contemplated  by  the  combined
prospectus   contained  in  the   Registration   Statement  (the   "Registration
Statement") on Form S-3 to be filed by you on July 2, 1998,  with the Securities
and  Exchange  Commission  under the  Securities  Act of 1933,  as amended  (the
"Act"), which Securities include (i) $350,000,000 of New Bonds, Senior Notes, or
Debt Securities (as such terms are defined in the  Registration  Statement),  or
any  combination   thereof,  to  be  registered  pursuant  to  the  Registration
Statement,  (ii) $50,000,000 of New Bonds, Senior Notes, or Debt Securities,  or
any combination thereof, previously registered under Registration No. 333-27551;
and (b) any registration statement registering additional Securities pursuant to
Rule 462(b) of the Act that  relates to the  Registration  Statement  (the "Rule
462(b) Registration Statement").

         We have examined originals or copies, certified or otherwise identified
to  our  satisfaction,   of  such  corporate  records,   agreements,  and  other
instruments,   certificates,   orders,  opinions,   correspondence  with  public
officials, certificates provided by your officers and representatives, and other
documents as we have deemed necessary or advisable for the purposes of rendering
the opinions set forth herein.

         Based  on  the  foregoing,  it  is  our  opinion  that  after  (i)  the
Registration   Statement,   and  the  Rule  462(b)  Registration  Statement,  if
applicable,  shall have become effective, (ii) all required regulatory approvals
have  been  obtained,  and  (iii)  you  shall  have  entered  into  one or  more
underwriting or  distribution  agreements with respect to the Securities then to
be offered and the initial public offering price for each of such Securities and
the discounts  therefrom and commission  therefor shall have been  determined in
accordance with such  underwriting or distribution  agreements,  pursuant to the
authorization of your Board of Directors and the applicable order of the Arizona
Corporation  Commission,  then, when (i) the Securities have been issued,  sold,
executed, authenticated, and delivered, and (ii) the purchase price therefor has
been paid to you as  contemplated  in the  Registration  Statement  and the Rule
462(b) Registration Statement, if applicable
<PAGE>
Arizona Public Service Company
July 2, 1998
Page 2



(including the Exhibits  thereto),  and in any relevant  amendment thereto or in
any  Rule  424  supplement  to the  prospectus  contained  in  the  Registration
Statement,  the  Securities  will be validly issued and will  constitute  legal,
valid,  and binding  obligations of you except as the same may be limited by (a)
general  principles  of equity  or by  bankruptcy,  insolvency,  reorganization,
arrangement,  moratorium,  or other laws or equitable  principles relating to or
affecting  the  enforcement  of  creditors'  rights  generally,  or by equitable
principles  that limit the right to  specific  performance  or  otherwise  limit
remedial action or the enforcement of the security  provided for the Securities,
(b) the necessity for  compliance  with the  statutory  procedural  requirements
governing  the  exercise  of  remedies  by  a  secured  creditor,  and  (c)  the
qualification that certain waivers,  procedures,  remedies, and other provisions
of the Securities may be unenforceable  under or limited by the law of the State
of Arizona;  however, such law does not in our opinion substantially prevent the
practical  realization of the benefits thereof.  In giving the above opinion, we
have assumed that the law of the jurisdiction or  jurisdictions  that govern the
Securities is substantially the same as the law of the State of Arizona.

         Consent  is  hereby  given  to the use of this  opinion  as part of the
Registration   Statement,   and  the  Rule  462(b)  Registration  Statement,  if
applicable,  and to the use of our name wherever it appears in said Registration
Statement,  the related prospectus,  and the Rule 462(b) Registration Statement,
if applicable.

                                           Very truly yours,


                                           Snell & Wilmer L.L.P.
                                           Snell & Wilmer L.L.P.

                                  Exhibit 12.1


                         ARIZONA PUBLIC SERVICE COMPANY
                    COMPUTATION OF EARNINGS TO FIXED CHARGES
                             (Thousands of Dollars)


<TABLE>
<CAPTION>
                                                                         Twelve Months Ended
                                       -------------------------------------------------------------------------
                                       March 31,                             December 31,
                                       ---------    ------------------------------------------------------------

                                          1998         1997         1996         1995         1994        1993
                                          ----         ----         ----         ----         ----        ----
<S>                                    <C>          <C>          <C>          <C>          <C>         <C>      
Earnings:
    Net Income .....................   $ 254,784    $ 251,493    $ 243,471    $ 239,570    $ 243,486   $ 250,386
    Income taxes (1) ...............     155,381      153,324      132,961      141,267      177,244     188,907
    Fixed Charges ..................     193,856      195,055      203,855      214,768      213,581     220,590
                                       ---------    ---------    ---------    ---------    ---------   ---------
       Total .......................   $ 604,021    $ 599,872    $ 580,287    $ 595,605    $ 634,311   $ 659,883
                                       =========    =========    =========    =========    =========   =========

Fixed Charges:
    Interest expense ...............   $ 149,445    $ 150,335    $ 158,287    $ 168,175    $ 166,045   $ 171,272
    Amortization of debt discount,
       premium and expense .........       7,738        7,791        8,176        8,622        8,854       9,203
    Estimated interest portion of
       annual rents (2) ............      36,673       36,929       37,392       37,971       38,682      40,115
                                       ---------    ---------    ---------    ---------    ---------   ---------
       Total .......................   $ 193,856    $ 195,055    $ 203,855    $ 214,768    $ 213,581   $ 220,590
                                       =========    =========    =========    =========    =========   =========

Ratio of Earnings to Fixed Charges
    (rounded down) .................        3.11         3.07         2.84         2.77         2.96        2.99
                                       =========    =========    =========    =========    =========   =========

(1) Income Taxes:
    Charged to operations ..........   $ 186,909    $ 184,737    $ 178,513    $ 178,865    $ 168,202   $ 168,056
    Charged (credited) to other
       accounts ....................     (31,528)     (31,413)     (45,552)     (37,598)       9,042      20,851
                                       ---------    ---------    ---------    ---------    ---------   ---------
       Total .......................   $ 155,381    $ 153,324    $ 132,961    $ 141,267    $ 177,244   $ 188,907
                                       =========    =========    =========    =========    =========   =========

(2) Estimated interest portion of
    Unit 2 lease payments included
    in estimated interest portion of
    annual rentals .................   $  34,621    $  34,720    $  35,083    $  35,422    $  35,710   $  37,407
                                       =========    =========    =========    =========    =========   =========
</TABLE>

                                  Exhibit 23.1






INDEPENDENT AUDITORS' CONSENT

We consent to the incorporation by reference in this  Registration  Statement of
Arizona  Public  Service  Company on Form S-3 of our report dated March 4, 1998,
appearing in the Annual Report on Form 10-K of Arizona  Public  Service  Company
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.


DELOITTE & TOUCHE LLP
DELOITTE & TOUCHE LLP
Phoenix, Arizona

July 2, 1998

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


                                    FORM T-1

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                            STATEMENT OF ELIGIBILITY
                   UNDER THE TRUST INDENTURE ACT OF 1939 OF A
                    CORPORATION DESIGNATED TO ACT AS TRUSTEE

                      CHECK IF AN APPLICATION TO DETERMINE
                      ELIGIBILITY OF A TRUSTEE PURSUANT TO
                       SECTION 305(b)(2)             |__|

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

                              THE BANK OF NEW YORK
               (Exact name of trustee as specified in its charter)


New York                                                     13-5160382
(State of incorporation                                      (I.R.S. employer
if not a U.S. national bank)                                 identification no.)

48 Wall Street, New York, N.Y.                               10286
(Address of principal executive offices)                     (Zip code)

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


                         ARIZONA PUBLIC SERVICE COMPANY
               (Exact name of obligor as specified in its charter)


Arizona                                                      86-0011170
(State or other jurisdiction of                              (I.R.S. employer
incorporation or organization)                               identification no.)


400 North Fifth Street, P.O. Box 53999
Phoenix, Arizona                                             85072-3999
(Address of principal executive offices)                     (Zip code)

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

                              First Mortgage Bonds
                       (Title of the indenture securities)

================================================================================
<PAGE>
1.   General information. Furnish the following information as to the Trustee:

     (a)  Name and address of each examining or  supervising  authority to which
          it is subject.

- --------------------------------------------------------------------------------
                  Name                                        Address
- --------------------------------------------------------------------------------

     Superintendent of Banks of the State of        2 Rector Street, New York,
     New York                                       N.Y. 10006, and Albany, N.Y.
                                                    12203

     Federal Reserve Bank of New York               33 Liberty Plaza, New York,
                                                    N.Y. 10045

     Federal Deposit Insurance Corporation          Washington, D.C. 20429

     New York Clearing House Association            New York, New York 10005

     (b) Whether it is authorized to exercise corporate trust powers.

     Yes.

2.   Affiliations with Obligor.

     If  the  obligor  is an  affiliate  of  the  trustee,  describe  each  such
     affiliation.

     None.

16.  List of Exhibits.

     Exhibits identified in parentheses below, on file with the Commission,  are
     incorporated  herein by  reference as an exhibit  hereto,  pursuant to Rule
     7a-29  under the Trust  Indenture  Act of 1939  (the  "Act")  and 17 C.F.R.
     229.10(d).

     1.   A copy  of  the  Organization  Certificate  of The  Bank  of New  York
          (formerly  Irving Trust Company) as now in effect,  which contains the
          authority  to  commence  business  and a grant of powers  to  exercise
          corporate  trust  powers.  (Exhibit 1 to  Amendment  No. 1 to Form T-1
          filed with Registration  Statement No. 33-6215,  Exhibits 1a and 1b to
          Form T-1 filed with Registration  Statement No. 33-21672 and Exhibit 1
          to Form T-1 filed with Registration Statement No. 33-29637.)

     4.   A copy of the existing By-laws of the Trustee.  (Exhibit 4 to Form T-1
          filed with Registration Statement No. 33-31019.)
                                      -2-
<PAGE>
     6.   The  consent of the  Trustee  required  by Section  321(b) of the Act.
          (Exhibit  6  to  Form  T-1  filed  with  Registration   Statement  No.
          33-44051.)

     7.   A copy of the latest  report of  condition  of the  Trustee  published
          pursuant to law or to the requirements of its supervising or examining
          authority.
                                      -3-
<PAGE>
                                    SIGNATURE



         Pursuant to the  requirements of the Act, the Trustee,  The Bank of New
York, a corporation  organized  and existing  under the laws of the State of New
York,  has duly caused this  statement of eligibility to be signed on its behalf
by the undersigned,  thereunto duly authorized, all in The City of New York, and
State of New York, on the 29th day of June, 1998.


                                          THE BANK OF NEW YORK



                                          By:     VAN K. BROWN
                                              --------------------------------
                                              Name:  VAN K. BROWN
                                              Title: ASSISTANT VICE PRESIDENT
                                      -4-
<PAGE>
                                                                       Exhibit 7
                                                                       ---------

                       -----------------------------------
                       Consolidated Report of Condition of

                              THE BANK OF NEW YORK

                     of 48 Wall Street, New York, N.Y. 10286
                     And Foreign and Domestic Subsidiaries,
a member of the Federal  Reserve System,  at the close of business  December 31,
1997,  published in accordance  with a call made by the Federal  Reserve Bank of
this District pursuant to the provisions of the Federal Reserve Act.

                                                                  Dollar Amounts
ASSETS                                                             in Thousands
Cash and balances due from depos-
  itory institutions:
  Noninterest-bearing balances and
   currency and coin .....................................        $  5,742,986
  Interest-bearing balances ..............................           1,342,769
Securities:
  Held-to-maturity securities ............................           1,099,736
  Available-for-sale securities ..........................           3,882,686
Federal funds sold and Securities pur-
  chased under agreements to resell ......................           2,568,530
Loans and lease financing
  receivables:
  Loans and leases, net of unearned
    income ...............................................          35,019,608
  LESS: Allowance for loan and
    lease losses .........................................             627,350
  LESS: Allocated transfer risk
    reserve ..............................................                   0
  Loans and leases, net of unearned
    income, allowance, and reserve .......................          34,392,258
Assets held in trading accounts ..........................           2,521,451
Premises and fixed assets (including
  capitalized leases) ....................................             659,209
Other real estate owned ..................................              11,992
Investments in unconsolidated
  subsidiaries and associated
  companies ..............................................             226,263
Customers' liability to this bank on
  acceptances outstanding ................................           1,187,449
Intangible assets ........................................             781,684
Other assets .............................................           1,736,574
                                                                  ------------
Total assets .............................................        $ 56,153,587
                                                                  ============

LIABILITIES
Deposits:
  In domestic offices ....................................        $ 27,031,362
  Noninterest-bearing ....................................          11,899,507
  Interest-bearing .......................................          15,131,855
  In foreign offices, Edge and
  Agreement subsidiaries, and IBFs .......................          13,794,449
  Noninterest-bearing ....................................             590,999
  Interest-bearing .......................................          13,203,450
Federal funds purchased and Securities
  sold under agreements to repurchase ....................           2,338,881
Demand notes issued to the U.S. ..........................
  Treasury ...............................................             173,851
Trading liabilities ......................................           1,695,216
Other borrowed money:
  With remaining maturity of one year
    or less ..............................................           1,905,330
  With remaining maturity of more than
    one year through three years .........................                   0
  With remaining maturity of more than
    three years ..........................................              25,664
Bank's liability on acceptances exe-
  cuted and outstanding ..................................           1,195,923
Subordinated notes and debentures ........................           1,012,940
Other liabilities ........................................           2,018,960
                                                                  ------------
Total liabilities ........................................          51,192,576
                                                                  ------------

EQUITY CAPITAL
Common stock .............................................           1,135,284
Surplus ..................................................             731,319
Undivided profits and capital
  reserves ...............................................           3,093,726
Net unrealized holding gains
  (losses) on available-for-sale
  securities .............................................              36,866
Cumulative foreign currency transla-
  tion adjustments .......................................             (36,184)
                                                                  ------------
Total equity capital .....................................           4,961,011
                                                                  ------------
Total liabilities and equity
  capital ................................................        $ 56,153,587
                                                                  ============


      I,  Robert E.  Keilman,  Senior  Vice  President  and  Comptroller  of the
above-named  bank do hereby  declare  that this  Report  of  Condition  has been
prepared in conformance with the  instructions  issued by the Board of Governors
of the  Federal  Reserve  System  and is true to the  best of my  knowledge  and
belief.

                                                               Robert E. Keilman

      We, the undersigned directors, attest to the correctness of this Report of
Condition  and  declare  that it has been  examined by us and to the best of our
knowledge  and belief has been  prepared in  conformance  with the  instructions
issued by the Board of Governors of the Federal  Reserve  System and is true and
correct.

      Thomas A. Renyi     )
      Alan R. Griffith    )   Directors
      J. Carter Bacot     )
                          

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


                                    FORM T-1

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                            STATEMENT OF ELIGIBILITY
                   UNDER THE TRUST INDENTURE ACT OF 1939 OF A
                    CORPORATION DESIGNATED TO ACT AS TRUSTEE

                      CHECK IF AN APPLICATION TO DETERMINE
                      ELIGIBILITY OF A TRUSTEE PURSUANT TO
                         SECTION 305(b)(2)         |__|

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

                              THE BANK OF NEW YORK
               (Exact name of trustee as specified in its charter)

New York                                                     13-5160382
(State of incorporation                                      (I.R.S. employer
if not a U.S. national bank)                                 identification no.)

48 Wall Street, New York, N.Y.                               10286
(Address of principal executive offices)                     (Zip code)


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



                         ARIZONA PUBLIC SERVICE COMPANY
               (Exact name of obligor as specified in its charter)


Arizona                                                      86-0011170
(State or other jurisdiction of                              (I.R.S. employer
incorporation or organization)                               identification no.)


400 North Fifth Street, P.O. Box 53999
Phoenix, Arizona                                             85072-3999
(Address of principal executive offices)                     (Zip code)

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

                                 Debt Securities
                       (Title of the indenture securities)


================================================================================
<PAGE>
1.   General information. Furnish the following information as to the Trustee:

     (a)  Name and address of each examining or  supervising  authority to which
          it is subject.

- --------------------------------------------------------------------------------
                  Name                                        Address
- --------------------------------------------------------------------------------

     Superintendent of Banks of the State of        2 Rector Street, New York,
     New York                                       N.Y. 10006, and Albany, N.Y.
                                                    12203

     Federal Reserve Bank of New York               33 Liberty Plaza, New York,
                                                    N.Y. 10045

     Federal Deposit Insurance Corporation          Washington, D.C. 20429

     New York Clearing House Association            New York, New York 10005

     (b)  Whether it is authorized to exercise corporate trust powers.

     Yes.

2.   Affiliations with Obligor.

     If  the  obligor  is an  affiliate  of  the  trustee,  describe  each  such
     affiliation.

     None.

16.  List of Exhibits.

     Exhibits identified in parentheses below, on file with the Commission,  are
     incorporated  herein by  reference as an exhibit  hereto,  pursuant to Rule
     7a-29  under the Trust  Indenture  Act of 1939  (the  "Act")  and 17 C.F.R.
     229.10(d).

     1.   A copy  of  the  Organization  Certificate  of The  Bank  of New  York
          (formerly  Irving Trust Company) as now in effect,  which contains the
          authority  to  commence  business  and a grant of powers  to  exercise
          corporate  trust  powers.  (Exhibit 1 to  Amendment  No. 1 to Form T-1
          filed with Registration  Statement No. 33-6215,  Exhibits 1a and 1b to
          Form T-1 filed with Registration  Statement No. 33-21672 and Exhibit 1
          to Form T-1 filed with Registration Statement No. 33-29637.)

     4.   A copy of the existing By-laws of the Trustee.  (Exhibit 4 to Form T-1
          filed with Registration Statement No. 33-31019.)
                                       -2-
<PAGE>
     6.   The  consent of the  Trustee  required  by Section  321(b) of the Act.
          (Exhibit  6  to  Form  T-1  filed  with  Registration   Statement  No.
          33-44051.)

     7.   A copy of the latest  report of  condition  of the  Trustee  published
          pursuant to law or to the requirements of its supervising or examining
          authority.
                                       -3-
<PAGE>
                                    SIGNATURE


         Pursuant to the  requirements of the Act, the Trustee,  The Bank of New
York, a corporation  organized  and existing  under the laws of the State of New
York,  has duly caused this  statement of eligibility to be signed on its behalf
by the undersigned,  thereunto duly authorized, all in The City of New York, and
State of New York, on the 29th day of June, 1998.


                                        THE BANK OF NEW YORK



                                        By:     VAN K. BROWN
                                            ------------------------------------
                                            Name:  VAN K. BROWN
                                            Title: ASSISTANT VICE PRESIDENT
                                      -4-
<PAGE>
                                                                       Exhibit 7
                                                                       ---------

                       -----------------------------------
                       Consolidated Report of Condition of

                              THE BANK OF NEW YORK

                     of 48 Wall Street, New York, N.Y. 10286
                     And Foreign and Domestic Subsidiaries,
a member of the Federal  Reserve System,  at the close of business  December 31,
1997,  published in accordance  with a call made by the Federal  Reserve Bank of
this District pursuant to the provisions of the Federal Reserve Act.

                                                                  Dollar Amounts
ASSETS                                                             in Thousands
Cash and balances due from depos-
  itory institutions:
  Noninterest-bearing balances and
   currency and coin .....................................        $  5,742,986
  Interest-bearing balances ..............................           1,342,769
Securities:
  Held-to-maturity securities ............................           1,099,736
  Available-for-sale securities ..........................           3,882,686
Federal funds sold and Securities pur-
  chased under agreements to resell ......................           2,568,530
Loans and lease financing
  receivables:
  Loans and leases, net of unearned
    income ...............................................          35,019,608
  LESS: Allowance for loan and
    lease losses .........................................             627,350
  LESS: Allocated transfer risk
    reserve ..............................................                   0
  Loans and leases, net of unearned
    income, allowance, and reserve .......................          34,392,258
Assets held in trading accounts ..........................           2,521,451
Premises and fixed assets (including
  capitalized leases) ....................................             659,209
Other real estate owned ..................................              11,992
Investments in unconsolidated
  subsidiaries and associated
  companies ..............................................             226,263
Customers' liability to this bank on
  acceptances outstanding ................................           1,187,449
Intangible assets ........................................             781,684
Other assets .............................................           1,736,574
                                                                  ------------
Total assets .............................................        $ 56,153,587
                                                                  ============

LIABILITIES
Deposits:
  In domestic offices ....................................        $ 27,031,362
  Noninterest-bearing ....................................          11,899,507
  Interest-bearing .......................................          15,131,855
  In foreign offices, Edge and
  Agreement subsidiaries, and IBFs .......................          13,794,449
  Noninterest-bearing ....................................             590,999
  Interest-bearing .......................................          13,203,450
Federal funds purchased and Securities
  sold under agreements to repurchase ....................           2,338,881
Demand notes issued to the U.S. ..........................
  Treasury ...............................................             173,851
Trading liabilities ......................................           1,695,216
Other borrowed money:
  With remaining maturity of one year
    or less ..............................................           1,905,330
  With remaining maturity of more than
    one year through three years .........................                   0
  With remaining maturity of more than
    three years ..........................................              25,664
Bank's liability on acceptances exe-
  cuted and outstanding ..................................           1,195,923
Subordinated notes and debentures ........................           1,012,940
Other liabilities ........................................           2,018,960
                                                                  ------------
Total liabilities ........................................          51,192,576
                                                                  ------------

EQUITY CAPITAL
Common stock .............................................           1,135,284
Surplus ..................................................             731,319
Undivided profits and capital
  reserves ...............................................           3,093,726
Net unrealized holding gains
  (losses) on available-for-sale
  securities .............................................              36,866
Cumulative foreign currency transla-
  tion adjustments .......................................             (36,184)
                                                                  ------------
Total equity capital .....................................           4,961,011
                                                                  ------------
Total liabilities and equity
  capital ................................................        $ 56,153,587
                                                                  ============


      I,  Robert E.  Keilman,  Senior  Vice  President  and  Comptroller  of the
above-named  bank do hereby  declare  that this  Report  of  Condition  has been
prepared in conformance with the  instructions  issued by the Board of Governors
of the  Federal  Reserve  System  and is true to the  best of my  knowledge  and
belief.

                                                               Robert E. Keilman

      We, the undersigned directors, attest to the correctness of this Report of
Condition  and  declare  that it has been  examined by us and to the best of our
knowledge  and belief has been  prepared in  conformance  with the  instructions
issued by the Board of Governors of the Federal  Reserve  System and is true and
correct.

      Thomas A. Renyi     )
      Alan R. Griffith    )   Directors
      J. Carter Bacot     )
                          

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549

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

                                    FORM T-1

                            STATEMENT OF ELIGIBILITY
                    UNDER THE TRUST INDENTURE ACT OF 1939 OF
                   A CORPORATION DESIGNATED TO ACT AS TRUSTEE

                   -------------------------------------------
               CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF
                A TRUSTEE PURSUANT TO SECTION 305(b)(2) ________

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

                            THE CHASE MANHATTAN BANK
               (Exact name of trustee as specified in its charter)


New York                                                              13-4994650
(State of incorporation                                         (I.R.S. employer
if not a national bank)                                      identification No.)

270 Park Avenue
New York, New York                                                         10017
(Address of principal executive offices)                              (Zip Code)

                               William H. McDavid
                                 General Counsel
                                 270 Park Avenue
                            New York, New York 10017
                               Tel: (212) 270-2611
            (Name, address and telephone number of agent for service)

                  --------------------------------------------
                         Arizona Public Service Company
               (Exact name of obligor as specified in its charter)

Arizona                                                               86-0011170
(State or other jurisdiction of                                 (I.R.S. employer
incorporation or organization)                               identification No.)

400 North Fifth Street
Phoenix, Arizona                                                           85004
(Address of principal executive offices)                              (Zip Code)

                  --------------------------------------------
                                 Debt Securities
                       (Title of the indenture securities)

            ---------------------------------------------------------
<PAGE>
                                     GENERAL

Item 1.  General Information.

         Furnish the following information as to the trustee:

         (a)   Name and address of each  examining or  supervising  authority to
which it is subject.

               New York State Banking Department,  State House, Albany, New York
               12110.

               Board of Governors  of the Federal  Reserve  System,  Washington,
               D.C., 20551

               Federal  Reserve  Bank of New York,  District  No. 2, 33  Liberty
               Street, New York, N.Y.

               Federal Deposit Insurance Corporation, Washington, D.C., 20429.


         (b)   Whether it is authorized to exercise corporate trust powers.

               Yes.


Item 2.  Affiliations with the Obligor.

         If the  obligor is an  affiliate  of the  trustee,  describe  each such
affiliation.

         None.
<PAGE>
Item 16.   List of Exhibits

           List  below  all  exhibits  filed  as a part  of  this  Statement  of
Eligibility.

           1. A copy of the  Articles  of  Association  of the Trustee as now in
effect, including the Organization Certificate and the Certificates of Amendment
dated February 17, 1969, August 31, 1977, December 31, 1980,  September 9, 1982,
February 28, 1985, December 2, 1991 and July 10, 1996 (see Exhibit 1 to Form T-1
filed  in  connection  with  Registration  Statement  No.  333-06249,  which  is
incorporated by reference).

           2. A copy of the  Certificate of Authority of the Trustee to Commence
Business  (see  Exhibit  2 to Form T-1  filed in  connection  with  Registration
Statement No. 33-50010, which is incorporated by reference. On July 14, 1996, in
connection  with the  merger  of  Chemical  Bank and The  Chase  Manhattan  Bank
(National  Association),  Chemical Bank, the surviving corporation,  was renamed
The Chase Manhattan Bank).

           3. None,  authorization  to exercise  corporate  trust  powers  being
contained in the documents identified above as Exhibits 1 and 2.

           4. A copy of the  existing  By-Laws of the Trustee  (see Exhibit 4 to
Form T-1 filed in connection with Registration Statement No. 333-06249, which is
incorporated by reference).

           5. Not applicable.

           6. The consent of the Trustee  required by Section  321(b) of the Act
(see Exhibit 6 to Form T-1 filed in connection with  Registration  Statement No.
33-50010,  which is incorporated  by reference.  On July 14, 1996, in connection
with  the  merger  of  Chemical  Bank and The  Chase  Manhattan  Bank  (National
Association),  Chemical Bank, the surviving  corporation,  was renamed The Chase
Manhattan Bank).

           7. A copy of the latest report of condition of the Trustee, published
pursuant to law or the requirements of its supervising or examining authority.

           8. Not applicable.

           9. Not applicable.

                                    SIGNATURE

           Pursuant to the  requirements  of the Trust Indenture Act of 1939 the
Trustee,  The Chase Manhattan  Bank, a corporation  organized and existing under
the laws of the State of New York, has duly caused this statement of eligibility
to be signed on its behalf by the undersigned, thereunto duly authorized, all in
the City of New York and State of New York, on the 26th day of June, 1998.

                                      THE CHASE MANHATTAN BANK

                                           By T.J. Foley
                                             ----------------------------
                                              T.J. Foley
                                              Vice President
                                      - 3 -
<PAGE>
                              Exhibit 7 to Form T-1


                                Bank Call Notice

                             RESERVE DISTRICT NO. 2
                       CONSOLIDATED REPORT OF CONDITION OF

                            The Chase Manhattan Bank
                  of 270 Park Avenue, New York, New York 10017
                     and Foreign and Domestic Subsidiaries,
                     a member of the Federal Reserve System,

                   at the close of business March 31, 1998, in
        accordance with a call made by the Federal Reserve Bank of this
        District pursuant to the provisions of the Federal Reserve Act.


                                                                  Dollar Amounts
                     ASSETS                                        in Millions


Cash and balances due from depository institutions:
     Noninterest-bearing balances and
     currency and coin ......................................        $ 12,037
     Interest-bearing balances ..............................           4,054
Securities:                                                    
Held to maturity
securities ..................................................           2,340
Available for sale securities ...............................          50,134
Federal funds sold and securities purchased under                    
     agreements to resell ...................................          24,982
Loans and lease financing receivables:                               
     Loans and leases, net of unearned income ....   $127,958        
     Less: Allowance for loan and lease losses ...      2,797        
     Less: Allocated transfer risk reserve .......          0        
                                                     --------        
     Loans and leases, net of unearned income,                       
     allowance, and reserve .................................         125,161
Trading Assets ..............................................          61,820
Premises and fixed assets (including capitalized                     
                                                                     
leases) .....................................................           2,961
Other real estate owned .....................................             347
Investments in unconsolidated subsidiaries and                       
     associated companies ...................................             242
Customers' liability to this bank on acceptances                     
     outstanding ............................................           1,380
Intangible assets............................................           1,549
Other assets ................................................          11,727
                                                                     --------
                                                                     
TOTAL ASSETS ................................................        $298,734
                                                                     ========
                                      - 4 -
<PAGE>


                        LIABILITIES

Deposits
     In domestic offices ....................................       $  96,682
     Noninterest-bearing .........................  $  38,074       
     Interest-bearing ............................     58,608       
                                                    ---------       
     In foreign offices, Edge and Agreement,                        
     subsidiaries and IBF's                                         
 . ...........................................................          72,630
Noninterest-bearing ..............................  $   3,289       
     Interest-bearing ............................     69,341       
                                                                    
Federal funds purchased and securities sold under agree-            
ments to repurchase .........................................          42,735
Demand notes issued to the U.S. Treasury ....................             872
Trading liabilities .........................................          45,545
                                                                    
Other borrowed money (includes mortgage indebtedness                
     and obligations under capitalized leases):                     
     With a remaining maturity of one year or less ..........           4,454
     With a remaining maturity of more than one year                
            through three years .............................             231
      With a remaining maturity of more than three years ....             106
Bank's liability on acceptances executed and outstanding ....           1,380
Subordinated notes and debentures ...........................           5,708
Other liabilities ...........................................          11,295
                                                                    
TOTAL LIABILITIES ...........................................         281,638
                                                                    ---------

                        EQUITY CAPITAL                                  
                                                                    
Perpetual preferred stock and related surplus ...............               0
Common stock ................................................           1,211
Surplus  (exclude all surplus related to preferred stock) ...          10,291
Undivided profits and capital reserves ......................           5,579
Net unrealized holding gains (losses)                               
on available-for-sale securities ............................              (1)
Cumulative foreign currency translation adjustments .........              16
                                                                    
TOTAL EQUITY CAPITAL ........................................          17,096
                                                                    ---------
TOTAL LIABILITIES AND EQUITY CAPITAL ........................       $ 298,734
                                                                    =========
                                                                 
I, Joseph L. Sclafani, E.V.P. & Controller of the above-named
bank,  do hereby  declare that this Report of  Condition  has
been prepared in conformance with the instructions  issued by
the appropriate  Federal regulatory  authority and is true to
the best of my knowledge and belief.

                                           JOSEPH L. SCLAFANI

We, the undersigned  directors,  attest to the correctness of
this  Report  of  Condition  and  declare  that  it has  been
examined by us, and to the best of our  knowledge  and belief
has been prepared in conformance with the instructions issued
by the appropriate  Federal regulatory  authority and is true
and correct.

                                           WALTER V. SHIPLEY       )
                                           THOMAS G. LABRECQUE     ) DIRECTORS
                                           WILLIAM B. HARRISON, JR.)
                                       -5-

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


                                    FORM T-1

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                            STATEMENT OF ELIGIBILITY
                   UNDER THE TRUST INDENTURE ACT OF 1939 OF A
                    CORPORATION DESIGNATED TO ACT AS TRUSTEE

                      CHECK IF AN APPLICATION TO DETERMINE
                      ELIGIBILITY OF A TRUSTEE PURSUANT TO
                          SECTION 305(b)(2)        |__|

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

                              THE BANK OF NEW YORK
               (Exact name of trustee as specified in its charter)


New York                                                     13-5160382
(State of incorporation                                      (I.R.S. employer
if not a U.S. national bank)                                 identification no.)

48 Wall Street, New York, N.Y.                               10286
(Address of principal executive offices)                     (Zip code)


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


                         ARIZONA PUBLIC SERVICE COMPANY
               (Exact name of obligor as specified in its charter)


Arizona                                                      86-0011170
(State or other jurisdiction of                              (I.R.S. employer
incorporation or organization)                               identification no.)


400 North Fifth Street, P.O. Box 53999
Phoenix, Arizona                                             85072-3999
(Address of principal executive offices)                     (Zip code)

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

                                  Senior Notes
                       (Title of the indenture securities)


================================================================================
<PAGE>
1.   General information. Furnish the following information as to the Trustee:

     (a)  Name and address of each examining or  supervising  authority to which
          it is subject.

- --------------------------------------------------------------------------------
                  Name                                        Address
- --------------------------------------------------------------------------------

     Superintendent of Banks of the State of        2 Rector Street, New York,
     New York                                       N.Y. 10006, and Albany, N.Y.
                                                    12203

     Federal Reserve Bank of New York               33 Liberty Plaza, New York,
                                                    N.Y. 10045

     Federal Deposit Insurance Corporation          Washington, D.C. 20429

     New York Clearing House Association            New York, New York 10005

     (b)  Whether it is authorized to exercise corporate trust powers.

     Yes.

2.   Affiliations with Obligor.

     If  the  obligor  is an  affiliate  of  the  trustee,  describe  each  such
     affiliation.

     None.

16.  List of Exhibits.

     Exhibits identified in parentheses below, on file with the Commission,  are
     incorporated  herein by  reference as an exhibit  hereto,  pursuant to Rule
     7a-29  under the Trust  Indenture  Act of 1939  (the  "Act")  and 17 C.F.R.
     229.10(d).

     1.   A copy  of  the  Organization  Certificate  of The  Bank  of New  York
          (formerly  Irving Trust Company) as now in effect,  which contains the
          authority  to  commence  business  and a grant of powers  to  exercise
          corporate  trust  powers.  (Exhibit 1 to  Amendment  No. 1 to Form T-1
          filed with Registration  Statement No. 33-6215,  Exhibits 1a and 1b to
          Form T-1 filed with Registration  Statement No. 33-21672 and Exhibit 1
          to Form T-1 filed with Registration Statement No. 33-29637.)

     4.   A copy of the existing By-laws of the Trustee.  (Exhibit 4 to Form T-1
          filed with Registration Statement No. 33-31019.)
                                      -2-
<PAGE>
     6.   The  consent of the  Trustee  required  by Section  321(b) of the Act.
          (Exhibit  6  to  Form  T-1  filed  with  Registration   Statement  No.
          33-44051.)

     7.   A copy of the latest  report of  condition  of the  Trustee  published
          pursuant to law or to the requirements of its supervising or examining
          authority.
                                      -3-
<PAGE>
                                    SIGNATURE



         Pursuant to the  requirements of the Act, the Trustee,  The Bank of New
York, a corporation  organized  and existing  under the laws of the State of New
York,  has duly caused this  statement of eligibility to be signed on its behalf
by the undersigned,  thereunto duly authorized, all in The City of New York, and
State of New York, on the 29th day of June, 1998.


                                         THE BANK OF NEW YORK



                                         By:     VAN K. BROWN
                                             -----------------------------------
                                             Name:  VAN K. BROWN
                                             Title: ASSISTANT VICE PRESIDENT
                                      -4-
<PAGE>
                                                                       Exhibit 7
                                                                       ---------

                       -----------------------------------
                       Consolidated Report of Condition of

                              THE BANK OF NEW YORK

                     of 48 Wall Street, New York, N.Y. 10286
                     And Foreign and Domestic Subsidiaries,
a member of the Federal  Reserve System,  at the close of business  December 31,
1997,  published in accordance  with a call made by the Federal  Reserve Bank of
this District pursuant to the provisions of the Federal Reserve Act.

                                                                  Dollar Amounts
ASSETS                                                             in Thousands
Cash and balances due from depos-
  itory institutions:
  Noninterest-bearing balances and
   currency and coin .....................................        $  5,742,986
  Interest-bearing balances ..............................           1,342,769
Securities:
  Held-to-maturity securities ............................           1,099,736
  Available-for-sale securities ..........................           3,882,686
Federal funds sold and Securities pur-
  chased under agreements to resell ......................           2,568,530
Loans and lease financing
  receivables:
  Loans and leases, net of unearned
    income ...............................................          35,019,608
  LESS: Allowance for loan and
    lease losses .........................................             627,350
  LESS: Allocated transfer risk
    reserve ..............................................                   0
  Loans and leases, net of unearned
    income, allowance, and reserve .......................          34,392,258
Assets held in trading accounts ..........................           2,521,451
Premises and fixed assets (including
  capitalized leases) ....................................             659,209
Other real estate owned ..................................              11,992
Investments in unconsolidated
  subsidiaries and associated
  companies ..............................................             226,263
Customers' liability to this bank on
  acceptances outstanding ................................           1,187,449
Intangible assets ........................................             781,684
Other assets .............................................           1,736,574
                                                                  ------------
Total assets .............................................        $ 56,153,587
                                                                  ============

LIABILITIES
Deposits:
  In domestic offices ....................................        $ 27,031,362
  Noninterest-bearing ....................................          11,899,507
  Interest-bearing .......................................          15,131,855
  In foreign offices, Edge and
  Agreement subsidiaries, and IBFs .......................          13,794,449
  Noninterest-bearing ....................................             590,999
  Interest-bearing .......................................          13,203,450
Federal funds purchased and Securities
  sold under agreements to repurchase ....................           2,338,881
Demand notes issued to the U.S. ..........................
  Treasury ...............................................             173,851
Trading liabilities ......................................           1,695,216
Other borrowed money:
  With remaining maturity of one year
    or less ..............................................           1,905,330
  With remaining maturity of more than
    one year through three years .........................                   0
  With remaining maturity of more than
    three years ..........................................              25,664
Bank's liability on acceptances exe-
  cuted and outstanding ..................................           1,195,923
Subordinated notes and debentures ........................           1,012,940
Other liabilities ........................................           2,018,960
                                                                  ------------
Total liabilities ........................................          51,192,576
                                                                  ------------

EQUITY CAPITAL
Common stock .............................................           1,135,284
Surplus ..................................................             731,319
Undivided profits and capital
  reserves ...............................................           3,093,726
Net unrealized holding gains
  (losses) on available-for-sale
  securities .............................................              36,866
Cumulative foreign currency transla-
  tion adjustments .......................................             (36,184)
                                                                  ------------
Total equity capital .....................................           4,961,011
                                                                  ------------
Total liabilities and equity
  capital ................................................        $ 56,153,587
                                                                  ============


      I,  Robert E.  Keilman,  Senior  Vice  President  and  Comptroller  of the
above-named  bank do hereby  declare  that this  Report  of  Condition  has been
prepared in conformance with the  instructions  issued by the Board of Governors
of the  Federal  Reserve  System  and is true to the  best of my  knowledge  and
belief.

                                                               Robert E. Keilman

      We, the undersigned directors, attest to the correctness of this Report of
Condition  and  declare  that it has been  examined by us and to the best of our
knowledge  and belief has been  prepared in  conformance  with the  instructions
issued by the Board of Governors of the Federal  Reserve  System and is true and
correct.

      Thomas A. Renyi     )
      Alan R. Griffith    )   Directors
      J. Carter Bacot     )
                          


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