ARIZONA PUBLIC SERVICE CO
S-3, 1996-11-01
ELECTRIC & OTHER SERVICES COMBINED
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     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 1, 1996
                                                           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]
                                   ----------
                         CALCULATION OF REGISTRATION FEE

================================================================================
                                          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      
- --------------------------------------------------------------------------------
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                      $25,000,000      (2)     $25,000,000   $7,576(6)
================================================================================
(1) In no event will the  aggregate  initial  offering  price of all  securities
    issued from time to time  pursuant  to this  Registration  Statement  exceed
    $25,000,000.  If  any  such  securities  are  issued  at an  original  issue
    discount,  then the aggregate  initial offering price as so discounted shall
    not exceed $25,000,000,  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 $25,000,000  principal amount of securities  registered hereby,  $25,000,000
principal  amount of  securities  registered  on December  22, 1995  pursuant to
Registration No. 33-64455, $25,000,000 principal amount of securities registered
on October 3, 1994  pursuant to  Registration  No.  33-55473,  and  $100,000,000
principal  amount of First Mortgage Bonds  registered on April 26, 1993 pursuant
to Registration No. 33-61228.  The  previously-paid  filing fees associated with
the referenced securities registered under Registration Nos. 33-64455,  33-55473
and 33-61228 totalled $8,621, $8,621 and $34,483, respectively.

    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 NOVEMBER 1, 1996


                                  $175,000,000

                         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 $175,000,000  aggregate principal amount of its first mortgage bonds
(the "New  Bonds"),  senior  notes  (the  "Senior  Notes"),  or  unsecured  debt
securities ("Debt Securities") of the Company (collectively,  the "Securities"),
in one or more  series at prices  and on terms to be  determined  at the time of
sale.

   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 , 1996.
<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., Room 1024, 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, 1995
(the "1995 10-K Report");

   2. The Company's Form 10-Q Reports for the fiscal quarters ended March 31 and
June 30, 1996; and

   3. The  Company's  Form 8-K Report  dated  August 28,  1996 (the  "August 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 August 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.

                                  THE OFFERING


Securities Offered .....................  Up to $175,000,000 of any  combination
                                          of First Mortgage Bonds, Senior Notes,
                                          and Debt Securities.
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 temporary investment
                                          pending such application.

                                  THE COMPANY

Business ...............................  Electric        utility      servicing
                                          approximately 705,000  customers in an
                                          area that includes  all  or part of 11
                                          of Arizona's 15 counties.
Generating Fuel Mix (estimated for the
 twelve months ended September 30, 
 1996)..................................  Coal--43%;               Nuclear--33%;
                                          Purchases--22%; Other--2%.

FINANCIAL DATA (THOUSANDS OF DOLLARS):

<TABLE>
<CAPTION>
                                                   TWELVE MONTHS ENDED
                                    --------------------------------------------------
                                                              DECEMBER 31,
                                                  ------------------------------------
                                    SEPTEMBER 30,
                                       1996(1)       1995         1994         1993
                                    ------------  ----------   ----------   ----------
<S>                                  <C>          <C>          <C>          <C>       
Electric Operating Revenues ......   $1,687,542   $1,614,952   $1,626,168   $1,602,413
                                     ==========   ==========   ==========   ==========
Net Income .......................   $  264,471   $  239,570   $  243,486   $  250,386
                                     ==========   ==========   ==========   ==========
Ratio of Earnings to Fixed Charges         3.01         2.77         2.96         2.99
</TABLE>

CAPITALIZATION DATA (THOUSANDS OF DOLLARS):


                                         AS OF
                                  SEPTEMBER 30, 1996   PERCENTAGE
                                  ------------------   ----------

Total Debt (including current         $2,212,650           53.1%
 maturities)
Redeemable Preferred Stock ...            53,000            1.3
Non-Redeemable Preferred Stock           170,391            4.1
Common Stock Equity ..........         1,726,644           41.5
                                      ----------        -------
Total Capitalization .........        $4,162,685          100.0%
                                      ==========        =======

_______________

(1) Financial  information as of and for the twelve months ended  September  30,
    1996 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) It is  assumed  that the net  proceeds  from  the  issuance  of the  Offered
    Securities  will  be used  for the  redemption,  repurchase,  repayment,  or
    retirement 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.  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
- --------------------------------------------------------------------------------
 SEPTEMBER 30,                                DECEMBER 31,
                ----------------------------------------------------------------
     1996        1995         1994           1993           1992           1991
- ---------------  ----         ----           ----           ----           ----
      3.01       2.77         2.96           2.99           2.73            (1)

_______________
(1) A write-off  resulting from a December 1991 Arizona  Corporation  Commission
    ("ACC") order  settling the Company's  then-pending  rate case resulted in a
    negative coverage ratio and an earnings coverage deficiency of approximately
    $317 million for the twelve  months ended  December 31, 1991.  Excluding the
    effects of the  write-off,  the coverage  ratio would have been 2.11 for the
    same period.

   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 by New Bonds or, in the  circumstances
described under the caption  "Description  of Senior Notes -- Security;  Release
Date," as 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,
                                        4
<PAGE>
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.

   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
                                        5
<PAGE>
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 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 September  30, 1996,  the Company  estimates  that the Mortgage and the
articles  of  incorporation  would  have  allowed  the  Company  to  issue up to
approximately  $1.7 billion and $1.4 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.
                                        6
<PAGE>
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  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
1995, such requirement amounted to approximately $128 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.
                                        7
<PAGE>
   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 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 includes (i) two commitments in the aggregate  principal
amount  of  approximately  $35.7  million  by The Bank of New York  pursuant  to
reimbursement  agreements  related to letters of credit  issued on behalf of the
Company in connection with issuances 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, $0 and $6 million
of which, respectively,  were outstanding at September 30, 1996. 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;  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;  (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 --
Defeasance  and  Discharge" or  "Description  of Senior Notes -- Defeasance  and
Covenant Defeasance -- Covenant  Defeasance," or under both such captions;  (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
                                       10
<PAGE>
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).

   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
                                       11
<PAGE>
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.

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; RELEASE DATE

   Until the Release Date (as defined  below),  the Senior Notes will be secured
by one or more series of Senior Note Mortgage  Bonds issued and delivered by the
Company to the Senior Note Trustee (see  "Description  of the 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
                                       12
<PAGE>
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 Note Mortgage  Bonds will be applied by the Senior Note Trustee
to satisfy the Company's  obligations  with respect to principal of, premium and
interest on, the related  series of Senior Notes (Section 312). THE RELEASE DATE
WILL BE THE DATE THAT ALL FIRST MORTGAGE BONDS ("FIRST  MORTGAGE  BONDS") OF THE
COMPANY  ISSUED AND  OUTSTANDING  UNDER THE  MORTGAGE,  OTHER THAN  SENIOR  NOTE
MORTGAGE  BONDS,  HAVE BEEN RETIRED (AT,  BEFORE OR AFTER THE MATURITY  THEREOF)
THROUGH PAYMENT,  REDEMPTION, OR OTHERWISE. ON THE RELEASE DATE, THE SENIOR NOTE
TRUSTEE WILL DELIVER TO THE COMPANY FOR  CANCELLATION  ALL SENIOR NOTE  MORTGAGE
BONDS AND THE COMPANY  WILL CAUSE THE SENIOR NOTE  TRUSTEE TO PROVIDE  NOTICE TO
ALL HOLDERS OF SENIOR NOTES OF THE  OCCURRENCE OF THE RELEASE DATE. AS A RESULT,
ON THE RELEASE  DATE,  THE SENIOR NOTE  MORTGAGE  BONDS WILL CEASE TO SECURE THE
SENIOR NOTES, AND THE SENIOR NOTES WILL BECOME UNSECURED GENERAL  OBLIGATIONS OF
THE COMPANY.  (SECTION 407) 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.  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) While the Company will be  precluded  after the Release Date from
issuing additional First Mortgage Bonds, the Company will not be precluded under
the Senior Note  Indenture or the Senior  Notes from  issuing or assuming  other
secured debt, or incurring liens on its property,  unless otherwise indicated in
the applicable Prospectus Supplement.

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
                                       13
<PAGE>
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 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).
                                       14
<PAGE>
   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 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 THE 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
                                       15
<PAGE>
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 Company'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 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  includes  (i)  two
commitments in the aggregate  principal amount of approximately $35.7 million by
The Bank of New York pursuant to reimbursement  agreements related to letters of
credit issued on behalf of the Company in connection with issuances 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, $0 and $6 million of
                                       16
<PAGE>
which, respectively, was outstanding at September 30, 1996. 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 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.

   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; (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
                                       17
<PAGE>
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) 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:
                                       18
<PAGE>
      (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  September  30,  1996,  outstanding  Senior  Debt and
subordinated debt of the Company  aggregated  approximately $2.1 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 -- Security; 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).

   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
                                       19
<PAGE>
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  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
                                       20
<PAGE>
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 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
                                       21
<PAGE>
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).

   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).
                                       22
<PAGE>
   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 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
                                       23
<PAGE>
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).

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  includes  (i) two  commitments  in the  aggregate
principal amount of approximately $35.7 million by The Bank of New York pursuant
to reimbursement agreements related to letters of credit issued on behalf of the
Company in connection with issuances 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, $0 and $6 million
of which, respectively,  were outstanding at September 30, 1996. 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
                                       24
<PAGE>
paper  program, and (iii) has a commitment to lend the Company up to $55 million
under a revolving credit  agreement,  $14 million of which was outstanding as of
September 30, 1996. 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 $175 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.

   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  and the  related  financial  statement  schedules
incorporated in this Prospectus by reference to the Company's 1995 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.

   With respect to the unaudited interim  financial  information for the periods
ended  March 31 and June 30,  1996 and  1995,  which is  incorporated  herein by
reference,  Deloitte & Touche LLP have applied limited  procedures in accordance
with professional standards for a review of such information. However, as stated
in their reports  included in the Company's  Quarterly  Reports on Form 10-Q for
the quarters  ended March 31 and June 30, 1996,  and  incorporated  by reference
herein,  they did not audit and they do not  express an opinion on that  interim
financial information.  Accordingly,  the degree of reliance on their reports on
such  information  should be  restricted  in light of the limited  nature of the
review  procedures  applied.  Deloitte  &  Touche  LLP  are not  subject  to the
liability  provisions  of  Section  11 of the  Securities  Act of 1933 for their
reports on the unaudited interim financial information because those reports are
not "reports" or a "part" of the registration statement prepared or certified by
an accountant within the meaning of Sections 7 and 11 of the Act.

                                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
                                       25
<PAGE>
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.
                                       26
================================================================================
   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 .......................................      17
Plan of Distribution .................................................      25
Experts ..............................................................      25
Legal Opinions .......................................................      25

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


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



                                  $175,000,000


                             ARIZONA PUBLIC SERVICE
                                     COMPANY


                              FIRST MORTGAGE BONDS
                                  SENIOR NOTES
                                 DEBT SECURITIES


                                   ----------

                                   [APS LOGO]

                                   ----------




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

ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.




Securities and Exchange Commission registration fee ........           $  7,576
Printing, engraving, and postage expenses ..................             30,000*
Legal fees .................................................            125,000*
Accounting fees ............................................             40,000*
Rating Agency fees .........................................            150,000*
Trustee's fees and expenses ................................             25,000*
Blue Sky fees and expenses .................................             15,000*
Miscellaneous ..............................................              2,424*
                                                                       --------
Total ......................................................           $330,000
                                                                       ========

_______________
*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 First Mortgage Bonds.
1.2             Form of Underwriting Agreement for Debt Securities.
1.3             Form of Distribution Agreement (to be filed as an Exhibit by means of Form 8-K).
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 of Indenture relating to Senior Notes.
4.6             Form(s) of Supplemental Indenture relating to Offered Senior Notes (to be filed as
                Exhibit(s) by means of Form 8-K).
4.7             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.
15.1            Letter In Lieu of Consent of Deloitte & Touche LLP Regarding Unaudited Interim Financial
                Information.
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-5).
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>
4.8       Mortgage and Deed of Trust         4.1 to September 1992 Form 10-Q     1-4473      11-9-92
            relating to Company's First        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 February 23,
                                               1994 Form 8-K Report
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 The       Report
          Bank of New York, as Trustee,
          relating to subordinated 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      Form of Indenture relating to      4.3 to Registration Statement No.   1-4473     11-20-95
          Senior Debt Securities               33-64455

4.12      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.
</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
                                      II-3
<PAGE>
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  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.
                                      II-4
<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  1st day of
November, 1996.

                                         ARIZONA PUBLIC SERVICE COMPANY
                                         By       O. MARK DE MICHELE
                                            ------------------------------------
                                              (O. Mark De Michele, 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 O. Mark De Michele,  William J. Post,  Jaron B.  Norberg,  William J.
Hemelt, and Nancy E. Newquist 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.
<TABLE>
<CAPTION>
             SIGNATURE                           TITLE                      DATE
             ---------                           -----                      ----

<S>                                    <C>                              <C>
        O. MARK DE MICHELE             Principal Executive Officer      November 1, 1996
- ----------------------------------            and Director
  (O. Mark De Michele, President
   and Chief Executive Officer)

          WILLIAM J. POST                      Director                 November 1, 1996
- ----------------------------------
          (William J. Post,
      Senior Vice President and
      Chief Operating Officer)

          JARON B. NORBERG             Principal Accounting and         November 1, 1996
- ----------------------------------        Financial Officer
         (Jaron B. Norberg,                  and Director
    Executive Vice President and
      Chief Financial Officer)

          MARTHA O. HESSE                      Director                 November 1, 1996
- ----------------------------------
         (Martha O. Hesse)

        MARIANNE M. JENNINGS                   Director                 November 1, 1996
- ----------------------------------
       (Marianne M. Jennings)

         ROBERT G. MATLOCK                     Director                 November 1, 1996
- ----------------------------------
        (Robert G. Matlock)
</TABLE>
                                      II-5
<PAGE>
             SIGNATURE                    TITLE                  DATE
             ---------                    -----                  ----

         JOHN R. NORTON III             Director            November 1, 1996
- ----------------------------------
        (John R. Norton III)

          DONALD M. RILEY               Director            November 1, 1996
- ----------------------------------
          (Donald M. Riley)

          HENRY B. SARGENT              Director            November 1, 1996
- ----------------------------------
         (Henry B. Sargent)

          WILMA W. SCHWADA              Director            November 1, 1996
- ----------------------------------
         (Wilma W. Schwada)

           RICHARD SNELL                Director            November 1, 1996
- ----------------------------------
           (Richard Snell)

          DIANNE C. WALKER              Director            November 1, 1996
- ----------------------------------
         (Dianne C. Walker)

        BEN F. WILLIAMS, JR.            Director            November 1, 1996
- ----------------------------------
       (Ben F. Williams, Jr.)

       THOMAS G. WOODS, JR.             Director            November 1, 1996
- ----------------------------------
     (Thomas G. Woods, Jr.)
                                      II-6
<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 First Mortgage Bonds.
    1.2            Form of Underwriting Agreement for Debt Securities.
    1.3            Form of Distribution Agreement (to be filed as an Exhibit by means of Form 8-K).
    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 of Indenture Relating to Senior Notes.
    4.6            Form of Supplemental Indenture relating to Senior Notes (to be filed as Exhibit(s) by means
                     of Form 8-K.)
    4.7            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.
   15.1            Letter in Lieu of consent of Deloitte & Touche LLP Regarding Unaudited Interim Financial
                     Information.
   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-5).
   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 $175,000,000
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-three 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  represents and warrants to,
and agrees with, the several Underwriters that:
<PAGE>
                  (a)  A  registration  statement  (No.  33-61228)  relating  to
         $100,000,000  of the Bonds,  a registration  statement  (No.  33-55473)
         relating to $25,000,000 of the Bonds or unsecured debentures, notes, or
         other  evidences of  indebtedness  (the  "Securities"),  a registration
         statement  (No.  33-64455)  relating  to  $25,000,000  of the  Bonds or
         Securities ,and a registration  statement (No.  333-______) relating to
         $25,000,000 of the Bonds, Securities or the Company's senior notes (the
         "Senior  Notes")  (including  a  combined  prospectus  relating  up  to
         $175,000,000 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,"  the  "Second  Registration  Statement,"  the
         "Third   Registration   Statement,"   and  the   "Fourth   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  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
                                       
<PAGE>
         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 8 of
         Notes to Financial Statements in the Company's Form 10-K Report for the
         fiscal  year ended  December  31,  1995 (the  "1995 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 7 of Notes to Financial  Statements in the
         1995 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 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
<PAGE>
         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 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,
<PAGE>
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,
         the Third Registration Statement, the Fourth 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,  the Third Registration  Statement,  the Fourth
         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,  the Third Registration  Statement,  the Fourth 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 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
         Fourth  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.
<PAGE>
                  (d)  The  Company  will  furnish  to the  Underwriters  or the
         Representatives such copies of the Registration  Statements  (including
         one copy of the Fourth 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.

                  (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 
<PAGE>
         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 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,   
<PAGE>
         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,  the Third
         Registration Statement,  the Fourth 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 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 
<PAGE>
                  foreign  corporation to do business and is in good standing in
                  the State of New Mexico,  the only other jurisdiction 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,  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 
<PAGE>
                  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  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  
<PAGE>
                  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 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 
<PAGE>
                  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,  the Second
                  Registration Statement,  the Third Registration Statement, and
                  the Fourth 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, the Second Registration Statement, the
                  Third  Registration  Statement,  or  the  Fourth  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 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 
<PAGE>
                           (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;

                           (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 
<PAGE>
                  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  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
<PAGE>
                  respect to priority only, to liens, if any,  existing prior to
                  the time of any  necessary  recordation  and/or  filing by the
                  Company;

                           (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 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,  the Second Registration  Statement,  the
         Third Registration Statement, or the Fourth  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
<PAGE>
         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
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 
<PAGE>
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 unreasonably be 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:  (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 
<PAGE>
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  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.
<PAGE>
         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.

         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.

         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.
<PAGE>
                                                Very truly yours,

                                                ARIZONA PUBLIC SERVICE COMPANY


                                                By ___________________________
                                                   Treasurer
<PAGE>
The foregoing  Underwriting Agreement is hereby confirmed and accepted as of the
date first above written.


____________________________


                                   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
$175,000,000 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  ________________,  between the Company
and Chemical 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.  33-55473)  relating  to
         $25,000,000 of the Securities,  a registration statement (No. 33-61228)
         relating to  $100,000,000  of the Company's  first  mortgage bonds (the
         "Bonds"),   a  registration   statement  (No.   33-64455)  relating  to
         $25,000,000  of the Bonds or Securities  and a  registration  statement
         (No. 333-_______)  relating to $25,000,000 of the Securities,  Bonds or
         the Company's  senior notes (the "Senior Notes")  (including a combined
         prospectus  relating to up to $175,000,000 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,"  the
         "Second Registration Statement," the "Third Registration Statement" and
         the "Fourth 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 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
         Chemical 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  
<PAGE>
         Prospectus and the Terms Agreement referred to in Section 3 relating to
         the  Purchased  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 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  
<PAGE>
denominations and registered in such names as the Underwriters may request.

                  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,
         the Third Registration Statement, the Fourth 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,  the Third Registration  Statement,  the Fourth
         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,  the Third Registration  Statement,  the Fourth 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 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  Underwriters  or the
         Representatives such copies of the Registration  Statements  (including
         one copy of the Fourth 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,  
<PAGE>
         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 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.
<PAGE>
                  (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 Underwriters
         or the Representatives.

                  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
<PAGE>
         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,  the Third
         Registration Statement,  the Fourth 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
<PAGE>
                  business  and is in good  standing in the State of New Mexico,
                  the  only  other  jurisdiction  in  which  it owns  or  leases
                  substantial properties or in which the conduct of its business
                  requires such qualification;

                       (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
<PAGE>
                  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 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,   the  Second
                  Registration  Statement,  the Third Registration Statement and
                  the Fourth 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, the Second Registration Statement, the
                  Third  Registration   Statement  or  the  Fourth  Registration
                  Statement has been issued and no proceedings  for that purpose
                  have been instituted or are pending or contemplated
<PAGE>
                  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 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  
<PAGE>
         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; 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 
<PAGE>
         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 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, the Second  Registration Statement, the
         Third Registration  Statement or the Fourth 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 
<PAGE>
         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  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
<PAGE>
         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  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 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,  
<PAGE>
         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  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.
<PAGE>
                  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.

                  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.
<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__________________________________

                                   Exhibit 4.5







                         ARIZONA PUBLIC SERVICE COMPANY

                                       TO

                              THE BANK OF NEW YORK

                                     Trustee



                                 ______________


                                    Indenture

                      Dated as of _____________ ___, 199__


                                 ______________


                               (For Senior Notes)
<PAGE>
         ..............................................................
    Certain Sections of this Indenture relating to Sections 310 through 318,
                 inclusive, of the Trust Indenture Act of 1939:

<TABLE>
<CAPTION>
Trust Indenture
  Act Section                                                                   Indenture Section
<S>                   <C>                                                       <C>
SECTION 310(a) (1)    ........................................................  709
           (a) (2)    ........................................................  709
           (a) (3)    ........................................................  Not Applicable
           (a) (4)    ........................................................  Not Applicable
           (b)        ........................................................  708
                                                                                710
SECTION 311(a)        ........................................................  713
           (b)        ........................................................  713
SECTION 312(a)        ........................................................  801
                                                                                802
           (b)        ........................................................  802
           (c)        ........................................................  802
SECTION 313(a)        ........................................................  803
           (b)        ........................................................  803
           (c)        ........................................................  803
           (d)        ........................................................  803
SECTION 314(a)        ........................................................  804
           (a) (4)    ........................................................  101
                                                                                1104
           (b)        ........................................................  1105
           (c) (1)    ........................................................  102
           (c) (2)    ........................................................  102
           (c) (3)    ........................................................  Not Applicable
           (d)        ........................................................  102
                      ........................................................  404
           (e)        ........................................................  102
SECTION 315(a)        ........................................................  701
           (b)        ........................................................  702
           (c)        ........................................................  701
           (d)        ........................................................  701
           (e)        ........................................................  614
SECTION 316(a)        ........................................................  101
           (a) (1)(A) ........................................................  602
                                                                                612
           (a) (1)(B) ........................................................  613
           (a) (2)    ........................................................  Not Applicable
           (b)        ........................................................  608
           (c)        ........................................................  104
SECTION 317(a) (1)    ........................................................  603
           (a) (2)    ........................................................  604
           (b)        ........................................................  1103
SECTION 318(a)        ........................................................  107
</TABLE>

_________________
NOTE: This  reconciliation and tie shall not, for any purpose, be deemed to be a
part of the Indenture.
<PAGE>
                                                               TABLE OF CONTENTS

                                            ----------

<TABLE>
<CAPTION>
                                                                                                     PAGE
                                                                                                     ----

PARTIES
RECITALS OF THE COMPANY


                                            ARTICLE ONE

                      DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION
<S>                <C>                                                                               <C>
SECTION 101.       Definitions:
                   Act..............................................................................   2
                   Affiliate........................................................................   2
                   Authenticating Agent.............................................................   2
                   Board of Directors...............................................................   2
                   Board Resolution.................................................................   2
                   Business Day.....................................................................   2
                   Commission.......................................................................   2
                   Company..........................................................................   2
                   Company Request; Company Order...................................................   2
                   Corporate Trust Office...........................................................   2
                   Corporation......................................................................   2
                   Covenant Defeasance..............................................................   3
                   Defaulted Interest...............................................................   3
                   Defeasance.......................................................................   3
                   Depositary.......................................................................   3
                   Event of Default.................................................................   3
                   Exchange Act.....................................................................   3
                   Expiration Date..................................................................   3
                   Expert...........................................................................   3
                   First Mortgage...................................................................   3
                   First Mortgage Bonds.............................................................   3
                   Global Note......................................................................   3
                   Holder...........................................................................   3
                   Indenture........................................................................   3
                   Interest.........................................................................   3
                   Interest Payment Date............................................................   3
                   Investment Company Act...........................................................   4
                   Maturity.........................................................................   4
                   Mortgage Trustee.................................................................   4
                   Notes............................................................................   4
                   Note Register; Note Registrar....................................................   4
                   Notice of Default................................................................   4
                   Officers' Certificate............................................................   4
                   Opinion of Counsel...............................................................   4
                   Original Issue Discount Note.....................................................   4
                   Outstanding......................................................................   4
                   Paying Agent.....................................................................   5
                   Person...........................................................................   5
                   Place of Payment.................................................................   5
                   Predecessor Note.................................................................   5
                   Redemption Date..................................................................   5
                   Redemption Price.................................................................   6
                   Regular Record Date..............................................................   6
                   Release Date.....................................................................   6
                   Responsible Officer..............................................................   6
                   Securities Act...................................................................   6
                   Senior Note First Mortgage Bonds.................................................   6
                   Special Record Date..............................................................   6
                   Stated Maturity..................................................................   6
                   Subsidiary.......................................................................   6
                   Trust Indenture Act..............................................................   6
</TABLE>
<PAGE>
<TABLE>
<S>                                                                                                   <C>
                   Trustee..........................................................................   6

                   U.S. Government Obligation.......................................................   7
                   Vice President...................................................................   7
SECTION 102.  Compliance Certificates and Opinions..................................................   7
SECTION 103.  Form of Documents Delivered to Trustee................................................   7
SECTION 104.  Acts of Holders; Record Dates.........................................................   8
SECTION 105.  Notices, Etc., to Trustee and Company.................................................  10
SECTION 106.  Notice to Holders; Waiver.............................................................  10
SECTION 107.  Conflict with Trust Indenture Act.....................................................  11
SECTION 108.  Effect of Headings and Table of Contents..............................................  11
SECTION 109.  Successors and Assigns................................................................  11
SECTION 110.  Separability Clause...................................................................  11
SECTION 111.  Benefits of Indenture.................................................................  11
SECTION 112.  Governing Law.........................................................................  11
SECTION 113.  Legal Holidays                                                                          12


                                            ARTICLE TWO

                                            NOTE FORMS

SECTION 201.  Forms Generally.......................................................................  12
SECTION 202.  Form of Face of Note..................................................................  12
SECTION 203.  Form of Reverse of Note...............................................................  14
SECTION 204.  Form of Legend for Global Notes.......................................................  18
SECTION 205.  Form of Trustee's Certificate of Authentication.......................................  19

                                             ARTICLE THREE

                                             THE NOTES

SECTION 301.  Amount Unlimited; Issuable in Series..................................................  19
SECTION 302.  Denominations.........................................................................  22
SECTION 303.  Execution, Authentication, Delivery and Dating........................................  22
SECTION 304.  Temporary Notes.......................................................................  24
SECTION 305.  Registration, Registration of Transfer and Exchange...................................  24
SECTION 306.  Mutilated, Destroyed, Lost and Stolen Notes...........................................  26
SECTION 307.  Payment of Interest; Interest Rights Preserved........................................  26
SECTION 308.  Persons Deemed Owners.................................................................  27
SECTION 309.  Cancellation..........................................................................  28
SECTION 310.  Computation of Interest...............................................................  28
SECTION 311.  CUSIP Numbers                                                                           28
</TABLE>
<PAGE>
<TABLE>
<S>                                                                                                   <C>
SECTION 312.  Payments on Senior Note First Mortgage Bonds..........................................  28

                                              ARTICLE FOUR

                                 SENIOR NOTE FIRST MORTGAGE BONDS

SECTION 401.  Acceptance of Senior Note First Mortgage Bonds........................................  29
SECTION 402.  Terms of Senior Note First Mortgage Bonds.............................................  29
SECTION 403.  Senior Note First Mortgage bonds as Security for Notes................................  29
SECTION 404.  Fair Value Certificate................................................................  30
SECTION 405.  Senior Note First Mortgage Bonds Held by the Trustee..................................  31
SECTION 406.  No Transfer of Senior Note First Mortgage bonds; Exception............................  31
SECTION 407.  Delivery to the Company of all Senior Note First Mortgage bonds.......................  31
SECTION 408.  Further Assurances....................................................................  32
SECTION 409.  Exchange and Surrender of Senior Note First Mortgage bonds............................  32

                                              ARTICLE FIVE

                                    SATISFACTION AND DISCHARGE

SECTION 501.  Satisfaction and Discharge of Indenture...............................................  33
SECTION 502.  Application of Trust Money............................................................  34

                                            ARTICLE SIX

                                             REMEDIES

SECTION 601.  Events of Default.....................................................................  34
SECTION 602.  Acceleration of Maturity; Rescission and Annulment....................................  36
SECTION 603.  Collection of Indebtedness and Suits for
                       Enforcement by Trustee.......................................................  37
SECTION 604.  Trustee May File Proofs of Claim......................................................  37
SECTION 605.  Trustee May Enforce Claims Without Possession
                       of Notes.....................................................................  38
SECTION 606.  Application of Money Collected........................................................  38
SECTION 607.  Limitation on Suits...................................................................  38
SECTION 608.  Unconditional Right of Holders to Receive Principal,
                       Premium and Interest.........................................................  39
SECTION 609.  Restoration of Rights and Remedies....................................................  39
SECTION 610.  Rights and Remedies Cumulative........................................................  40
SECTION 611.  Delay or Omission Not Waiver..........................................................  40
SECTION 612.  Control by Holders....................................................................  40
SECTION 613.  Waiver of Past Defaults...............................................................  40
SECTION 614.  Undertaking for Costs.................................................................  41
SECTION 615.  Waiver of Usury, Stay or Extension Laws...............................................  41

                                           ARTICLE SEVEN

                                            THE TRUSTEE

SECTION 701.  Certain Duties and Responsibilities...................................................  41
SECTION 702.  Notice of Defaults....................................................................  42
SECTION 703.  Certain Rights of Trustee.............................................................  42
SECTION 704.  Not Responsible for Recitals or Issuance of Notes.....................................  43
SECTION 705.  May Hold Notes........................................................................  43
SECTION 706.  Money Held in Trust...................................................................  43
SECTION 707.  Compensation and Reimbursement........................................................  44
SECTION 708.  Conflicting Interests.................................................................  44
SECTION 709.  Corporate Trustee Required; Eligibility...............................................  45
SECTION 710.  Resignation and Removal; Appointment of Successor.....................................  45
SECTION 711.  Acceptance of Appointment by Successor................................................  46
SECTION 712.  Merger, Conversion, Consolidation or Succession
                        to Business.................................................................  47
SECTION 713.  Preferential Collection of Claims Against Company.....................................  48
</TABLE>
<PAGE>

<TABLE>
<S>                                                                                                   <C>
SECTION 714.  Appointment of Authenticating Agent...................................................  48

                                           ARTICLE EIGHT

                         HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

SECTION 801.  Company to Furnish Trustee Names and Addresses
                       of Holders...................................................................  50
SECTION 802.  Preservation of Information; Communications
                       to Holders...................................................................  50
SECTION 803.  Reports by Trustee....................................................................  50
SECTION 804.  Reports by Company....................................................................  51

                                           ARTICLE NINE

                       CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 901.  Company May Consolidate, Etc., Only on
                        Certain Terms...............................................................  51
SECTION 902.  Successor Substituted.................................................................  52

                                            ARTICLE TEN

                                      SUPPLEMENTAL INDENTURES

SECTION 1001.  Supplemental Indentures Without Consent of Holders...................................  53
SECTION 1002.  Supplemental Indentures With Consent of Holders......................................  54
SECTION 1003.  Execution of Supplemental Indentures.................................................  55
SECTION 1004.  Effect of Supplemental Indentures....................................................  55
SECTION 1005.  Conformity with Trust Indenture Act..................................................  55
SECTION 1006.  Reference in Securities to Supplemental Indentures...................................  55

                                          ARTICLE ELEVEN

                                             COVENANTS

SECTION 1101.  Payment of Principal, Premium and Interest...........................................  56
SECTION 1102.  Maintenance of Office or Agency......................................................  56
SECTION 1103.  Money for Notes Payments to Be Held in Trust.........................................  56
SECTION 1104.  Statement by Officers as to Default..................................................  57
SECTION 1105.  Recording, Filing, etc.; Opinions of Counsel.........................................  58
SECTION 1106.  Existence............................................................................  58
SECTION 1107.  Maintenance of Properties............................................................  59
SECTION 1108.  Payment of Taxes and Other Claims....................................................  59
SECTION 1109.  Waiver of Certain Covenants..........................................................  59
SECTION 1110.  Calculation of Original Issue Discount...............................................  59

                                          ARTICLE TWELVE

                                        REDEMPTION OF NOTES

SECTION 1201.  Applicability of Article.............................................................  60
SECTION 1202.  Election to Redeem; Notice to Trustee................................................  60
SECTION 1203.  Selection by Trustee of Notes to Be Redeemed.........................................  60
SECTION 1204.  Notice of Redemption.................................................................  61
SECTION 1205.  Deposit of Redemption Price..........................................................  62
SECTION 1206.  Notes Payable on Redemption Date.....................................................  62
SECTION 1207.  Notes Redeemed in Part...............................................................  62
</TABLE>
<PAGE>
<TABLE>
<CAPTION>

                                         ARTICLE THIRTEEN

                                           SINKING FUNDS
<S>                                                                                                   <C>
SECTION 1301.  Applicability of Article.............................................................  63
SECTION 1302.  Satisfaction of Sinking Fund Payments with Notes.....................................  63
SECTION 1303.  Redemption of Notes for Sinking Fund.................................................  63

                                         ARTICLE FOURTEEN

                                DEFEASANCE AND COVENANT DEFEASANCE

SECTION 1401.  Company's Option to Effect Defeasance or
                       Covenant Defeasance..........................................................  64
SECTION 1402.  Defeasance and Discharge.............................................................  64
SECTION 1403.  Covenant Defeasance..................................................................  65
SECTION 1404.  Conditions to Defeasance or Covenant Defeasance......................................  65
SECTION 1405.  Deposited Money and U.S. Government Obligations
                    to Be Held in Trust; Miscellaneous Provisions...................................  67
SECTION 1406.  Reinstatement........................................................................  67
</TABLE>

TESTIMONIUM
SIGNATURES AND SEALS
ACKNOWLEDGEMENTS
<PAGE>
      INDENTURE,  dated as of ____________  ____,  199_,  between Arizona Public
Service Company, a corporation duly organized and existing under the laws of the
State of Arizona (herein called  the"Company"),  having its principal  office at
400 North Fifth Street, Phoenix,  Arizona 85004, and The Bank of New York, a New
York banking corporation, as Trustee (herein called the"Trustee").


                             RECITALS OF THE COMPANY

      The  Company  has duly  authorized  the  execution  and  delivery  of this
Indenture  to provide  for the  issuance  from time to time of its Senior  Notes
(herein  called  the  "Notes"),  to be issued  in one or more  series as in this
Indenture provided.

      Subject to the provisions of Section 403 hereof, the Company may issue one
or more series of Senior Note First Mortgage Bonds (as hereinafter  defined) and
deliver  such Senior Note First  Mortgage  Bonds to the Trustee to hold in trust
for the  benefit  of the  respective  Holders  from time to time of the  related
series  of  Notes,  or  require  the  Trustee  to  deliver  to the  Company  for
cancellation any and all Senior Note First Mortgage Bonds held by the Trustee.

      All things  necessary  to make this  Indenture  a valid  agreement  of the
Company, in accordance with its terms, have been done.

      NOW, THEREFORE, THIS INDENTURE WITNESSETH:

      For and in  consideration of the premises and the purchase of the Notes by
the Holders thereof,  it is mutually  agreed,  for the benefit of all Holders of
the Notes or of series thereof, as follows:


                                   ARTICLE ONE

                        DEFINITIONS AND OTHER PROVISIONS
                             OF GENERAL APPLICATION


SECTION 101.  Definitions.

      For all purposes of this Indenture, except as otherwise expressly provided
or unless the context otherwise requires:

         (1) the terms  defined in this Article  have the  meanings  assigned to
   them in this Article and include the plural as well as the singular;

         (2) all  other  terms  used  herein  which  are  defined  in the  Trust
   Indenture Act,  either  directly or by reference  therein,  have the meanings
   assigned to them therein;

         (3) all accounting terms not otherwise defined herein have the meanings
   assigned to them in accordance with generally accepted accounting principles,
   and,  except as otherwise  herein  expressly  provided,  the term "generally
   accepted accounting  principles" with respect to any computation  required or
   permitted  hereunder shall mean such  accounting  principles as are generally
   accepted in the United States of America;

         (4)  unless  the  context  otherwise  requires,  any  reference  to  an
  "Article" or a "Section"  refers to an Article or a Section,  as the case may
   be, of this Indenture; and
<PAGE>
         (5)  the  words "herein", "hereof" and "hereunder"  and  other words of
   similar  import refer to this  Indenture as a whole and not to any particular
   Article, Section or other subdivision.

      "Act", when used with respect to any Holder,  has the meaning specified in
Section 104.

      "Affiliate"  of any  specified  Person means any other Person  directly or
indirectly  controlling  or  controlled  by or under  direct or indirect  common
control  with  such  specified  Person.  For the  purposes  of this  definition,
"control"  when used with  respect to any  specified  Person  means the power to
direct the  management  and  policies of such  Person,  directly or  indirectly,
whether  through the ownership of voting  securities,  by contract or otherwise;
and the terms  "controlling" and "controlled"  have meanings  correlative to the
foregoing.

      "Authenticating Agent" means any Person authorized by the Trustee pursuant
to Section 714 to act on behalf of the Trustee to  authenticate  Notes of one or
more series.

      "Board of Directors" means either the board of directors of the Company or
any duly authorized committee of that board.

      "Board Resolution" means a copy of a resolution certified by the Secretary
or an Assistant  Secretary of the Company to have been duly adopted by the Board
of  Directors  and  to be  in  full  force  and  effect  on  the  date  of  such
certification, and delivered to the Trustee.

      "Business Day", when used with respect to any Place of Payment, means each
Monday,  Tuesday,  Wednesday,  Thursday  and Friday  which is not a day on which
banking institutions in that Place of Payment are authorized or obligated by law
or executive order to close.

      "Commission"  means the Securities and Exchange  Commission,  from time to
time  constituted,  created under the Exchange Act, or, if at any time after the
execution of this  instrument such Commission is not existing and performing the
duties  now  assigned  to it  under  the  Trust  Indenture  Act,  then  the body
performing such duties at such time.

      "Company"  means the Person named as the "Company" in the first  paragraph
of this instrument  until a successor  Person shall have become such pursuant to
the applicable provisions of this Indenture, and thereafter "Company" shall mean
such successor Person.

      "Company  Request" or  "Company  Order"  means a written  request or order
signed  in the  name of the  Company  by its  Chairman  of the  Board,  its Vice
Chairman of the Board, its President or a Vice President,  and by its Treasurer,
an Assistant Treasurer, its Secretary,  an Assistant Secretary,  or an Associate
Secretary, and delivered to the Trustee.

      "Corporate  Trust  Office"  means the office of the Trustee in the City of
New York, New York at which at any particular  time its corporate trust business
shall be principally administered, which office at the date hereof is located at
101 Barclay Street, New York, New York 10286.

      "Corporation"  means  a  corporation,  association,  company,  joint-stock
company or business trust.

      "Covenant Defeasance" has the meaning specified in Section 1403.
<PAGE>
      "Defaulted Interest" has the meaning specified in Section 307.

      "Defeasance" has the meaning specified in Section 1402.

      "Depositary"  means, with respect to Notes of any series issuable in whole
or in part in the form of one or more Global Notes, a clearing agency registered
under the Exchange Act that is designated to act as Depositary for such Notes as
contemplated by Section 301.

      "Event of Default" has the meaning specified in Section 601.

      "Exchange Act" means the  Securities  Exchange Act of 1934 and any statute
successor thereto, in each case as amended from time to time.

      "Expiration Date" has the meaning specified in Section 104.

      "Expert"  means any officer of the Company  familiar with the terms of the
First Mortgage and this Indenture, any law firm, any investment banking firm, or
any other Person,  in each case that is appointed by Company Order, is an expert
in the applicable matter, and is satisfactory in the reasonable  judgment of the
Trustee.

      "First Mortgage" means the Mortgage and Deed of Trust, dated as of July 1,
1946, from the Company to The Bank of New York, as successor  trustee to Bank of
America National Trust and Savings Association, as supplemented and amended from
time to time.

      "First  Mortgage  Bonds"  means all  first  mortgage  bonds  issued by the
Company and outstanding  under the First Mortgage,  other than Senior Note First
Mortgage Bonds.

      "Global Note" means a Note that  evidences all or part of the Notes of any
series and bears the legend set forth in Section  204 (or such  legend as may be
specified as contemplated by Section 301 for such Notes).

      "Holder"  means a Person in whose  name a Note is  registered  in the Note
Register.

      "Indenture"  means this  instrument as  originally  executed and as it may
from  time  to  time  be  supplemented  or  amended  by one or  more  indentures
supplemental  hereto entered into pursuant to the applicable  provisions hereof,
including,  for all  purposes  of this  instrument  and  any  such  supplemental
indenture,  the  provisions  of the Trust  Indenture Act that are deemed to be a
part  of and  govern  this  instrument  and  any  such  supplemental  indenture,
respectively.  The term  "Indenture"  shall also include the terms of particular
series of Notes established as contemplated by Section 301.

      "independent," when applied to any accountant,  appraiser or other Expert,
shall mean such a Person who is in fact independent, selected by the Company and
approved by the Trustee in the exercise of reasonable care.

      "Interest",  when used with  respect to an Original  Issue  Discount  Note
which by its terms bears interest only after  Maturity,  means interest  payable
after Maturity.

      "Interest  Payment  Date",  when used with respect to any Note,  means the
Stated Maturity of an instalment of interest on such Note.

      "Investment  Company Act" means the Investment Company Act of 1940 and any
statute successor thereto, in each case as amended from time to time.
<PAGE>
      "Maturity",  when used with  respect to any Note,  means the date on which
the principal of such Note or an instalment of principal becomes due and payable
as therein or herein provided,  whether at the Stated Maturity or by declaration
of acceleration, call for redemption or otherwise.

      "Mortgage  Trustee"  means the Person serving as trustee at the time under
the First Mortgage.

      "Notes" has the meaning  stated in the first recital of this Indenture and
more  particularly  means any  Notes  authenticated  and  delivered  under  this
Indenture.

      "Note  Register"  and  "Note  Registrar"  have  the  respective   meanings
specified in Section 305.

      "Notice  of  Default"  means a  written  notice of the kind  specified  in
Section 601(4).

      "Officers'  Certificate" means a certificate signed by the Chairman of the
Board, a Vice Chairman of the Board,  the President or a Vice President,  and by
the Treasurer, an Assistant Treasurer,  the Secretary or an Assistant Secretary,
of the Company,  and  delivered to the Trustee.  One of the officers  signing an
Officers'  Certificate  given  pursuant to Section  1104 shall be the  principal
executive, financial or accounting officer of the Company.

      "Opinion  of  Counsel"  means a written  opinion  of  counsel,  who may be
counsel  for the  Company,  or other  counsel  who  shall be  acceptable  to the
Trustee.

      "Original Issue Discount Note" means any Note which provides for an amount
less than the principal  amount thereof to be due and payable upon a declaration
of acceleration of the Maturity thereof pursuant to Section 602.

      "Outstanding",  when used with respect to Notes,  means, as of the date of
determination,  all Notes  theretofore  authenticated  and delivered  under this
Indenture, except:

         (1) Notes  theretofore  cancelled  by the Trustee or  delivered  to the
   Trustee for cancellation;

         (2) Notes for whose payment or redemption money in the necessary amount
   has been  theretofore  deposited  with the Trustee or any Paying Agent (other
   than the  Company)  in  trust or set  aside  and  segregated  in trust by the
   Company (if the Company shall act as its own Paying Agent) for the Holders of
   such Notes;  provided that, if such Notes are to be redeemed,  notice of such
   redemption  has been duly  given  pursuant  to this  Indenture  or  provision
   therefor satisfactory to the Trustee has been made;

         (3) Notes as to which Defeasance has been effected  pursuant to Section
   1402; and

         (4) Notes  which have been paid  pursuant to Section 306 or in exchange
   for or in lieu of which other  Notes have been  authenticated  and  delivered
   pursuant  to this  Indenture,  other  than any such Notes in respect of which
   there shall have been presented to the Trustee proof  satisfactory to it that
   such Notes are held by a bona fide  purchaser  in whose  hands such Notes are
   valid obligations of the Company;
<PAGE>
provided,  however,  that in  determining  whether the Holders of the  requisite
principal amount of the Outstanding Notes have given, made or taken any request,
demand,  authorization,  direction,  notice,  consent,  waiver  or other  action
hereunder as of any date, (A) the principal amount of an Original Issue Discount
Note  which  shall  be  deemed  to be  Outstanding  shall be the  amount  of the
principal  thereof  which  would  be  due  and  payable  as of  such  date  upon
acceleration  of the Maturity  thereof to such date pursuant to Section 602, (B)
if, as of such date, the principal  amount  payable at the Stated  Maturity of a
Note is not  determinable,  the  principal  amount of such Note  which  shall be
deemed to be  Outstanding  shall be the amount as  specified  or  determined  as
contemplated by Section 301, (C) the principal  amount of a Note  denominated in
one or more  foreign  currencies  or currency  units which shall be deemed to be
Outstanding shall be the U.S. dollar  equivalent,  determined as of such date in
the manner provided as  contemplated by Section 301, of the principal  amount of
such Note (or, in the case of a Note  described  in Clause (A) or (B) above,  of
the amount  determined as provided in such  Clause),  and (D) Notes owned by the
Company or any other  obligor upon the Notes or any  Affiliate of the Company or
of such other obligor  shall be  disregarded  and deemed not to be  Outstanding,
except that,  in  determining  whether the Trustee shall be protected in relying
upon any such request, demand, authorization, direction, notice, consent, waiver
or other  action,  only Notes  which the Trustee  actually  knows to be so owned
shall be so  disregarded.  Notes so owned which have been  pledged in good faith
may be regarded as Outstanding if the pledgee establishes to the satisfaction of
the Trustee the  pledgee's  right so to act with  respect to such Notes and that
the  pledgee  is not the  Company  or any  other  obligor  upon the Notes or any
Affiliate of the Company or of such other obligor.

     "Paying  Agent"  means  any  Person  authorized  by the  Company to pay the
principal of or any premium or interest on any Notes on behalf of the Company.

     "Person" means any  individual,  corporation,  partnership,  joint venture,
trust,  unincorporated  organization  or  government  or any agency or political
subdivision thereof.

     "Place of  Payment",  when  used with  respect to the Notes of any  series,
means the place or places where the principal of and any premium and interest on
the Notes of that series are payable as  specified  as  contemplated  by Section
301.

     "Predecessor  Note" of  any  particular  Note  means  every  previous  Note
evidencing  all or a  portion  of the  same  debt  as  that  evidenced  by  such
particular   Note;  and,  for  the  purposes  of  this   definition,   any  Note
authenticated  and  delivered  under Section 306 in exchange for or in lieu of a
mutilated,  destroyed,  lost or stolen Note shall be deemed to evidence the same
debt as the mutilated, destroyed, lost or stolen Note.

     "Redemption  Date",  when used with  respect  to any  Note to be  redeemed,
means the date fixed for such redemption by or pursuant to this Indenture.

     "Redemption  Price",  when used with  respect to any Note  to be  redeemed,
means the price at which it is to be redeemed pursuant to this Indenture.

     "Regular  Record  Date" for the interest  payable on  any Interest  Payment
Date on the Notes of any series  means the date  specified  for that  purpose as
contemplated by Section 301.
<PAGE>
      "Release  Date" means the date as of which all First  Mortgage  Bonds have
been retired through payment,  redemption,  or otherwise at, before or after the
maturity thereof.

     "Responsible  Officer",  when used with respect to the Trustee,  means the
chairman or any  vice-chairman  of the board of  directors,  the chairman or any
vice-chairman of the executive committee of the board of directors, the chairman
of the trust committee,  the president,  any vice president,  the secretary, any
assistant secretary,  the treasurer,  any assistant treasurer,  the cashier, any
assistant  cashier,  any senior trust  officer,  any trust  officer or assistant
trust officer,  the controller or any assistant  controller or any other officer
of the Trustee  customarily  performing  functions similar to those performed by
any of  the  above  designated  officers  and  also  means,  with  respect  to a
particular  corporate  trust  matter,  any other  officer to whom such matter is
referred  because  of his  knowledge  of and  familiarity  with  the  particular
subject.

     "Securities Act" means the Securities Act of 1933 and any statute successor
thereto, in each case as amended from time to time.

     "Senior  Note First  Mortgage  Bonds"  shall  mean any bonds  issued by the
Company  under the First  Mortgage  and  delivered  to the  Trustee  pursuant to
Section 401 hereof.

     "Special  Record Date" for the payment of any  Defaulted  Interest  means a
date fixed by the Trustee pursuant to Section 307.

     "Stated Maturity",  when used with respect to any Note or any instalment of
principal thereof or interest thereon,  means the date specified in such Note as
the  fixed  date on which  the  principal  of such  Note or such  instalment  of
principal or interest is due and payable.

     "Subsidiary"  means a corporation  more than 50% of the outstanding  voting
stock of which is owned,  directly  or  indirectly,  by the Company or by one or
more other  Subsidiaries,  or by the Company and one or more other Subsidiaries.
For the purposes of this definition, "voting stock" means stock which ordinarily
has voting power for the election of directors,  whether at all times or only so
long as no  senior  class  of stock  has such  voting  power  by  reason  of any
contingency.

     "Trust  Indenture Act" means the Trust Indenture Act of 1939 as in force at
the date as of which this instrument was executed;  provided,  however,  that in
the event the Trust  Indenture  Act of 1939 is amended  after such date,  "Trust
Indenture Act" means, to the extent  required by any such  amendment,  the Trust
Indenture Act of 1939 as so amended.

     "Trustee" means the Person named as the "Trustee" in the first paragraph of
this instrument until a successor Trustee shall have become such pursuant to the
applicable provisions of this Indenture,  and thereafter "Trustee" shall mean or
include each Person who is then a Trustee hereunder, and if at any time there is
more than one such  Person,  "Trustee"  as used with respect to the Notes of any
series shall mean the Trustee with respect to Notes of that series.

     "U.S. Government Obligation" has the meaning specified in Section 1404.
<PAGE>
     "Vice  President",  when used with  respect to  the Company or the Trustee,
means any vice  president,  whether or not  designated  by a number or a word or
words added before or after the title "vice president".


SECTION 102.  Compliance Certificates and Opinions.

      Upon any  application or request by the Company to the Trustee to take any
action under any provision of this  Indenture,  the Company shall furnish to the
Trustee  such  certificates  and  opinions  as may be  required  under the Trust
Indenture Act. Each such certificate or opinion shall be given in the form of an
Officers'  Certificate,  if to be  given by an  officer  of the  Company,  or an
Opinion  of  Counsel,  if to be given by  counsel,  and  shall  comply  with the
requirements of the Trust Indenture Act and any other  requirements set forth in
this Indenture.

      Every  certificate or opinion with respect to compliance  with a condition
or covenant provided for in this Indenture shall include,

         (1) a  statement  that each  individual  signing  such  certificate  or
   opinion  has read such  covenant  or  condition  and the  definitions  herein
   relating thereto;

         (2) a brief  statement as to the nature and scope of the examination or
   investigation  upon  which  the  statements  or  opinions  contained  in such
   certificate or opinion are based;

         (3) a statement  that, in the opinion of each such  individual,  he has
   made such  examination  or  investigation  as is  necessary  to enable him to
   express an informed  opinion as to whether or not such  covenant or condition
   has been complied with; and

         (4) a statement as to whether,  in the opinion of each such individual,
   such condition or covenant has been complied with.


SECTION 103.  Form of Documents Delivered to Trustee.

      In any case where  several  matters are  required to be  certified  by, or
covered by an opinion of, any specified  Person,  it is not  necessary  that all
such  matters  be  certified  by, or covered by the  opinion  of,  only one such
Person,  or that they be so certified or covered by only one  document,  but one
such Person may certify or give an opinion  with respect to some matters and one
or more other such Persons as to other matters,  and any such Person may certify
or give an opinion as to such matters in one or several documents.

      Any  certificate  or opinion of an  officer of the  Company  may be based,
insofar as it relates to legal  matters,  upon a  certificate  or opinion of, or
representations  by,  counsel,  unless such officer knows, or in the exercise of
reasonable care should know, that the certificate or opinion or  representations
with respect to the matters upon which his  certificate  or opinion is based are
erroneous.  Any such certificate or opinion of counsel may be based,  insofar as
it  relates  to  factual   matters,   upon  a  certificate  or  opinion  of,  or
representations  by, an officer or  officers  of the  Company  stating  that the
information  with respect to such factual  matters is in the  possession  of the
Company, unless such counsel knows, or in the exercise of reasonable
<PAGE>
care  should  know,  that the  certificate  or opinion or  representations  with
respect to such matters are erroneous.

      Where  any  Person  is  required  to  make,  give or  execute  two or more
applications,  requests, consents,  certificates,  statements, opinions or other
instruments  under this Indenture,  they may, but need not, be consolidated  and
form one instrument.


SECTION 104.  Acts of Holders; Record Dates.

      Any request, demand, authorization,  direction, notice, consent, waiver or
other action provided or permitted by this Indenture to be given,  made or taken
by Holders  may be  embodied  in and  evidenced  by one or more  instruments  of
substantially  similar  tenor  signed by such Holders in person or by agent duly
appointed in writing;  and, except as herein otherwise expressly provided,  such
action shall become  effective when such instrument or instruments are delivered
to the Trustee and, where it is hereby expressly required,  to the Company. Such
instrument  or  instruments  (and the  action  embodied  therein  and  evidenced
thereby) are herein  sometimes  referred to as the "Act" of the Holders  signing
such instrument or instruments.  Proof of execution of any such instrument or of
a writing  appointing any such agent shall be sufficient for any purpose of this
Indenture  and (subject to Section 701)  conclusive  in favor of the Trustee and
the Company, if made in the manner provided in this Section.

      The fact and date of the execution by any Person of any such instrument or
writing may be proved by the  affidavit  of a witness of such  execution or by a
certificate  of a notary  public  or  other  officer  authorized  by law to take
acknowledgments of deeds, certifying that the individual signing such instrument
or writing acknowledged to him the execution thereof. Where such execution is by
a  signer  acting  in a  capacity  other  than  his  individual  capacity,  such
certificate  or  affidavit  shall  also  constitute   sufficient  proof  of  his
authority. The fact and date of the execution of any such instrument or writing,
or the  authority of the Person  executing  the same,  may also be proved in any
other manner which the Trustee deems sufficient.

      The ownership of Notes shall be proved by the Note Register.

      Any request, demand, authorization,  direction, notice, consent, waiver or
other Act of the Holder of any Note shall bind every  future  Holder of the same
Note and the Holder of every  Note  issued  upon the  registration  of  transfer
thereof or in exchange  therefor or in lieu thereof in respect of anything done,
omitted  or  suffered  to be done by the  Trustee  or the  Company  in  reliance
thereon, whether or not notation of such action is made upon such Note.

      The  Company  may  set  any  day as a  record  date  for  the  purpose  of
determining  the Holders of  Outstanding  Notes of any series  entitled to give,
make or take any request,  demand,  authorization,  direction,  notice, consent,
waiver or other action provided or permitted by this Indenture to be given, made
or taken by Holders of Notes of such series,  provided  that the Company may not
set a record date for, and the provisions of this paragraph shall not apply with
respect  to,  the  giving or  making  of any  notice,  declaration,  request  or
direction referred to in the next paragraph.  If any record date is set pursuant
to this  paragraph,  the Holders of Outstanding  Notes of the relevant series on
such record date, and no other Holders,  shall be entitled to take or revoke the
relevant  action,  whether or not such Holders  remain Holders after such record
date;  provided that no such action shall be effective 
<PAGE>
hereunder unless taken on or prior to the applicable  Expiration Date by Holders
of the requisite  principal  amount of Outstanding  Notes of such series on such
record date. Nothing in this paragraph shall be construed to prevent the Company
from  setting a new  record  date for any  action  for  which a record  date has
previously  been set  pursuant  to this  paragraph  (whereupon  the record  date
previously set shall automatically and with no action by any Person be cancelled
and of no effect),  and nothing in this  paragraph  shall be construed to render
ineffective  any action taken by Holders of the  requisite  principal  amount of
Outstanding  Notes of the  relevant  series  on the date  such  action is taken.
Promptly after any record date is set pursuant to this  paragraph,  the Company,
at its own expense,  shall cause notice of such record date, the proposed action
by Holders  and the  applicable  Expiration  Date to be given to the  Trustee in
writing  and to each  Holder of Notes of the  relevant  series in the manner set
forth in Section 106.

      The  Trustee  may  set  any  day as a  record  date  for  the  purpose  of
determining  the Holders of Outstanding  Notes of any series entitled to join in
the  giving or making of (i) any  Notice of  Default,  (ii) any  declaration  of
acceleration  referred  to in  Section  602,  (iii)  any  request  to  institute
proceedings  referred to in Section 607(2) or (iv) any direction  referred to in
Section 612, in each case with  respect to Notes of such  series.  If any record
date is set pursuant to this paragraph, the Holders of Outstanding Notes of such
series on such record date, and no other  Holders,  shall be entitled to join in
such notice, declaration, request or direction or to revoke the same, whether or
not such Holders  remain  Holders after such record date;  provided that no such
action shall be effective  hereunder  unless taken on or prior to the applicable
Expiration  Date by Holders of the  requisite  principal  amount of  Outstanding
Notes of such series on such record  date.  Nothing in this  paragraph  shall be
construed  to prevent the Trustee  from setting a new record date for any action
for which a record  date has  previously  been set  pursuant  to this  paragraph
(whereupon the record date previously set shall automatically and with no action
by any Person be  cancelled  and of no effect),  and  nothing in this  paragraph
shall be  construed  to render  ineffective  any action  taken by Holders of the
requisite  principal  amount of Outstanding  Notes of the relevant series on the
date such action is taken.  Promptly  after any record  date is set  pursuant to
this paragraph,  the Trustee,  at the Company's  expense,  shall cause notice of
such record date, the proposed  action by Holders and the applicable  Expiration
Date to be given to the  Company in writing  and to each  Holder of Notes of the
relevant series in the manner set forth in Section 106.

      With  respect to any record date set pursuant to this  Section,  the party
hereto which sets such record  dates may  designate  any day as the "Expiration
Date" and from time to time may change  the  Expiration  Date to any  earlier or
later day;  provided that no such change shall be effective unless notice of the
proposed new Expiration Date is given to the other party hereto in writing,  and
to each  Holder  of Notes of the  relevant  series  in the  manner  set forth in
Section 106, on or prior to the existing  Expiration Date. If an Expiration Date
is not designated  with respect to any record date set pursuant to this Section,
the party  hereto  which set such record date shall be deemed to have  initially
designated  the 180th day after such  record  date as the  Expiration  Date with
respect thereto,  subject to its right to change the Expiration Date as provided
in this paragraph.  Notwithstanding  the foregoing,  no Expiration Date shall be
later than the 180th day after the applicable record date.

      Without  limiting the foregoing,  a Holder entitled  hereunder to take any
action hereunder with regard to any particular Note may do so with regard to all
or any  part  of the  principal  
<PAGE>
amount of such Note or by one or more duly appointed agents each of which may do
so pursuant to such appointment with regard to all or any part of such principal
amount.


SECTION 105.  Notices, Etc., to Trustee and Company.

      Any request, demand, authorization,  direction, notice, consent, waiver or
Act of Holders or other  document  provided or permitted by this Indenture to be
made upon, given or furnished to, or filed with,

         (1) the Trustee by any Holder or by the Company shall be sufficient for
   every purpose hereunder if made,  given,  furnished or filed in writing to or
   with the Trustee at its Corporate Trust Office, Attention:  Corporate Trustee
   Administration, or

         (2) the Company by the Trustee or by any Holder shall be sufficient for
   every purpose hereunder  (unless  otherwise herein expressly  provided) if in
   writing and mailed,  first-class postage prepaid, to the Company addressed to
   it at the address of its principal office specified in the first paragraph of
   this  instrument or at any other address  previously  furnished in writing to
   the Trustee by the Company.

SECTION 106.  Notice to Holders; Waiver.

      Where this  Indenture  provides  for notice to Holders of any event,  such
notice shall be sufficiently given (unless otherwise herein expressly  provided)
if in writing and mailed,  first-class  postage prepaid, to each Holder affected
by such event, at his address as it appears in the Note Register, not later than
the latest  date (if any),  and not  earlier  than the  earliest  date (if any),
prescribed for the giving of such notice. In any case where notice to Holders is
given by mail,  neither the failure to mail such  notice,  nor any defect in any
notice so mailed,  to any particular Holder shall affect the sufficiency of such
notice with respect to other Holders.  Where this Indenture  provides for notice
in any manner,  such  notice may be waived in writing by the Person  entitled to
receive such notice,  either before or after the event, and such waiver shall be
the equivalent of such notice.  Waivers of notice by Holders shall be filed with
the Trustee,  but such filing shall not be a condition precedent to the validity
of any action taken in reliance upon such waiver.

      In case by reason of the  suspension  of regular mail service or by reason
of any other cause it shall be  impracticable  to give such notice by mail, then
such  notification  as shall be made  with the  approval  of the  Trustee  shall
constitute a sufficient notification for every purpose hereunder.

SECTION 107.  Conflict with Trust Indenture Act.

      If any provision hereof limits, qualifies or conflicts with a provision of
the Trust  Indenture  Act which is  required  under such Act to be a part of and
govern this Indenture,  the latter provision shall control.  If any provision of
this  Indenture  modifies or excludes any  provision of the Trust  Indenture Act
which may be so modified or excluded,  the latter  provision  shall be deemed to
apply to this Indenture as so modified or to be excluded, as the case may be.
<PAGE>
SECTION 108.  Effect of Headings and Table of Contents.

      The Article and Section  headings herein and the Table of Contents are for
convenience only and shall not affect the construction hereof.


SECTION 109.  Successors and Assigns.

      All covenants and  agreements in this  Indenture by the Company shall bind
its successors and assigns, whether so expressed or not.


SECTION 110.  Separability Clause.

      In case any provision in this  Indenture or in the Notes shall be invalid,
illegal or  unenforceable,  the  validity,  legality and  enforceability  of the
remaining provisions shall not in any way be affected or impaired thereby.


SECTION 111.  Benefits of Indenture.

      Nothing in this Indenture or in the Notes, express or implied,  shall give
to any Person,  other than the parties hereto and their successors hereunder and
the Holders,  any benefit or any legal or equitable right, remedy or claim under
this Indenture.


SECTION 112.  Governing Law.

      This  Indenture  and the  Notes  shall be  governed  by and  construed  in
accordance with the law of the State of New York, without regard to conflicts of
laws principles thereof.


SECTION 113.  Legal Holidays.

      In any case where any Interest  Payment  Date,  Redemption  Date or Stated
Maturity of any Note shall not be a Business  Day at any Place of Payment,  then
(notwithstanding  any other  provision of this  Indenture or of the Notes (other
than a provision of any Note which specifically states that such provision shall
apply in lieu of this  Section))  payment of interest or principal (and premium,
if any) need not be made at such Place of Payment on such date,  but may be made
on the next succeeding Business Day at such Place of Payment with the same force
and effect as if made on the Interest Payment Date or Redemption Date, or at the
Stated Maturity.


                                   ARTICLE TWO

                                   NOTE FORMS
<PAGE>
SECTION 201.  Forms Generally.

      The Notes of each series shall be in  substantially  the form set forth in
this Article,  or in such other form as shall be established by or pursuant to a
Board Resolution or in one or more indentures  supplemental hereto, in each case
with such appropriate insertions, omissions,  substitutions and other variations
as are  required or  permitted  by this  Indenture,  and may have such  letters,
numbers or other marks of identification and such legends or endorsements placed
thereon as may be required to comply with the rules of any  securities  exchange
or Depositary therefor or as may,  consistently  herewith,  be determined by the
officers executing such Notes, as evidenced by their execution  thereof.  If the
form of Notes of any series is  established  by action taken pursuant to a Board
Resolution, a copy of an appropriate record of such action shall be certified by
the  Secretary  or an Assistant  Secretary  of the Company and  delivered to the
Trustee at or prior to the delivery of the Company Order contemplated by Section
303 for the authentication and delivery of such Notes.

      The definitive  Notes shall be printed,  lithographed or engraved on steel
engraved  borders or may be produced in any other  manner,  all as determined by
the officers  executing  such Notes,  as  evidenced  by their  execution of such
Notes.


SECTION 202.  Form of Face of Note.

      [Insert  any  legend  required  by  the  Internal  Revenue  Code  and  the
regulations thereunder.]

                         ARIZONA PUBLIC SERVICE COMPANY

                         ..............................

No. .........                                                         $ ........
                                                              CUSIP No._________

      Arizona Public Service Company,  a corporation duly organized and existing
under the laws of Arizona (herein called the "Company",  which term includes any
successor  Person  under  the  Indenture  hereinafter  referred  to),  for value
received, hereby promises to pay to ........................................, or
registered assigns, the principal sum of ............................ Dollars on
 .................................................   [if  the  Note  is  to  bear
interest  prior  to  Maturity,  insert__,  and  to  pay  interest  thereon  from
 .............  or from the most recent  Interest  Payment Date to which interest
has  been  paid  or  duly  provided  for,  semi-annually  on  ............   and
 ............ in each year, commencing ........., at the rate of ....% per annum,
until the principal hereof is paid or made available for payment [if applicable,
insert__, provided that any principal  and premium,  and any such  instalment of
interest, which is overdue shall bear interest at the rate of ...% per annum (to
the extent that the payment of such interest shall be legally enforceable), from
the  dates  such  amounts  are due  until  they are paid or made  available  for
payment, and such interest shall be payable on demand]. The interest so payable,
and punctually paid or duly provided for, on any Interest  Payment Date will, as
provided  in such  Indenture,  be paid to the Person in whose name this Note (or
one or more  Predecessor  Notes) is  registered  at the close of business on the
Regular  Record Date for such  interest,  which shall be the .......  or .......
(whether  or not a  Business  Day),  as the case  may be,  next  preceding  such
Interest Payment Date. Any such interest not so punctually paid or duly
<PAGE>
provided  for will  forthwith  cease to be payable to the Holder on such Regular
Record Date and may either be paid to the Person in whose name this Note (or one
or more  Predecessor  Notes) is registered at the close of business on a Special
Record  Date  for the  payment  of such  Defaulted  Interest  to be fixed by the
Trustee,  notice  whereof  shall be given to Holders of Notes of this series not
less than 10 days prior to such Special  Record Date,  or be paid at any time in
any other lawful manner not inconsistent with the requirements of any securities
exchange on which the Notes of this  series may be listed,  and upon such notice
as may be  required  by  such  exchange,  all as  more  fully  provided  in said
Indenture].

[If the Note is not to bear interest  prior to Maturity,  insert__ The principal
of this Note shall not bear interest  except in the case of a default in payment
of principal upon  acceleration,  upon  redemption or at Stated  Maturity and in
such case the overdue  principal and any overdue  premium shall bear interest at
the rate of ....% per annum (to the extent  that the  payment  of such  interest
shall be legally  enforceable),  from the dates such  amounts are due until they
are paid or made  available  for payment.  Interest on any overdue  principal or
premium shall be payable on demand.  Any such  interest on overdue  principal or
premium  which is not paid on demand shall bear  interest at the rate of ......%
per annum (to the extent that the payment of such interest on interest  shall be
legally enforceable),  from the date of such demand until the amount so demanded
is paid or made available for payment. Interest on any overdue interest shall be
payable on demand.]

      Payment of the  principal  of (and  premium,  if any) and [if  applicable,
insert__ any such] interest on this Note will be made at the office or agency of
the  Company  maintained  for that  purpose  in  ............,  in such  coin or
currency  of the  United  States of  America  as at the time of payment is legal
tender  for  payment  of  public  and  private debts [if  applicable, insert__ ;
provided,  however, that at the option of the Company payment of interest may be
made by check  mailed to the  address  of the  Person  entitled  thereto as such
address shall appear in the Note Register].

      Reference is hereby made to the further  provisions of this Note set forth
on the reverse hereof,  which further provisions shall for all purposes have the
same effect as if set forth at this place.
<PAGE>
      Unless the certificate of  authentication  hereon has been executed by the
Trustee referred to on the reverse hereof by manual  signature,  this Note shall
not be entitled to any benefit under the Indenture or be valid or obligatory for
any purpose.

      IN WITNESS  WHEREOF,  the Company has caused  this  instrument  to be duly
executed under its corporate seal.



                                                  ARIZONA PUBLIC SERVICE COMPANY

                                                       By.......................

Attest:

 ....................


SECTION 203.  Form of Reverse of Note.

      This Note is one of a duly  authorized  issue of securities of the Company
(herein called the "Notes"), issued and to be issued in one or more series under
an  Indenture,  dated  as  of  ______________  ___,  199__  (herein  called  the
"Indenture",  which  term  shall  have  the  meaning  assigned  to  it  in  such
instrument),  between the Company and The Bank of New York,  as Trustee  (herein
called the  "Trustee",  which term  includes  any  successor  trustee  under the
Indenture), and reference is hereby made to the Indenture for a statement of the
respective rights,  limitations of rights,  duties and immunities  thereunder of
the  Company,  the  Trustee  and the  Holders of the Notes and of the terms upon
which the Notes are, and are to be,  authenticated  and delivered.  This Note is
one of the  series  designated  on the face  hereof  [if  applicable,  insert__,
limited in aggregate principal amount to $...........].

   [If the Note is  issued  before  the  Release  Date,  insert  __ Prior to the
Release  Date (as  hereinafter  defined),  this  Note will be  secured  by first
mortgage bonds (the "Senior Note First Mortgage Bonds") delivered by the Company
to the  Trustee  for the  benefit of the Holders of the series of Notes of which
this Note is a part,  issued under the  Mortgage and Deed of Trust,  dated as of
July 1, 1946,  from the Company to The Bank of New York,  as  successor  trustee
(the "Mortgage  Trustee"),  as supplemented and amended (the "First  Mortgage").
Reference is made to the First Mortgage for a description of property  mortgaged
and pledged, the nature and extent of the security, the rights of the holders of
the first mortgage bonds under the First Mortgage and of the Mortgage Trustee in
respect thereof, the duties and immunities of the Mortgage Trustee and the terms
and  conditions  upon which the Senior Note First Mortgage Bonds are secured and
the circumstances under which additional first mortgage bonds may be issued.

   FROM AND AFTER SUCH TIME AS ALL FIRST  MORTGAGE BONDS (OTHER THAN SENIOR NOTE
FIRST MORTGAGE  BONDS) ISSUED UNDER THE FIRST MORTGAGE HAVE BEEN RETIRED THROUGH
PAYMENT,  REDEMPTION OR OTHERWISE AT, BEFORE OR AFTER THE MATURITY  THEREOF (THE
"RELEASE DATE"),  THE SENIOR NOTE FIRST MORTGAGE BONDS SHALL CEASE TO SECURE THE
NOTES IN ANY MANNER.]
<PAGE>
      [If  applicable,  insert__  The  Notes  of  this  series  are  subject  to
redemption upon not less than 30 days' notice by mail, [if applicable,  insert__
(1) on ...........  in any year commencing with the year ......  and ending with
the year  ......  through  operation  of the  sinking  fund for this series at a
Redemption Price equal to 100% of the principal amount, and (2)] at any time [if
applicable,  insert__ on or after  ..........,  19..], as a whole or in part, at
the election of the Company,  at the following  Redemption  Prices (expressed as
percentages of the principal amount): If redeemed [if applicable, insert__ on or
before  ...............,  ...%,  and if  redeemed]  during the  12-month  period
beginning ............. of the years indicated,

Year                                   Year     
- ----           Redemption              ----              Redemption            
                  Price                                     Price
                  -----                                     -----


and  thereafter at a Redemption  Price equal to .....% of the principal  amount,
together in the case of any such  redemption  [if  applicable, insert__ (whether
through  operation of the sinking fund or otherwise)]  with accrued  interest to
the Redemption  Date, but interest  installments  whose Stated Maturity is on or
prior to such  Redemption  Date will be payable to the Holders of such Notes, or
one or more  Predecessor  Notes,  of  record  at the  close of  business  on the
relevant  Record Dates  referred to on the face  hereof,  all as provided in the
Indenture.]

      [If  applicable,  insert__  The  Notes  of  this  series  are  subject  to
redemption  upon not less than 30 days' notice by mail, (1) on  ............  in
any year  commencing  with the year ....  and ending with the year ....  through
operation  of the  sinking  fund for this  series at the  Redemption  Prices for
redemption  through  operation of the sinking fund  (expressed as percentages of
the  principal  amount)  set forth in the table  below,  and (2) at any time [if
applicable,  insert__ on or after  ............],  as a whole or in part, at the
election of the Company, at the Redemption Prices for redemption  otherwise than
through operation of the sinking fund (expressed as percentages of the principal
amount) set forth in the table below:  If redeemed  during the  12-month  period
beginning ............ of the years indicated,



Year                      Redemption Price                 Redemption Price For
- ----                       For Redemption                  Redemption Otherwise
                         Through Operation                Than Through Operation
                               of the                       of the Sinking Fund
                            Sinking Fund                    -------------------
                            ------------
<PAGE>
and  thereafter at a Redemption  Price equal to .....% of the principal  amount,
together in the case of any such redemption  (whether  through  operation of the
sinking fund or otherwise)  with accrued  interest to the  Redemption  Date, but
interest  installments  whose Stated  Maturity is on or prior to such Redemption
Date will be payable to the  Holders of such Notes,  or one or more  Predecessor
Notes,  of record at the close of business on the relevant Record Dates referred
to on the face hereof, all as provided in the Indenture.]

      [If applicable,  insert__  Notwithstanding the foregoing,  the Company may
not, prior to .............,  redeem any Notes of this series as contemplated by
[if applicable, insert__ Clause (2) of] the preceding paragraph as a part of, or
in  anticipation  of, any refunding  operation by the  application,  directly or
indirectly,   of  moneys  borrowed  having  an  interest  cost  to  the  Company
(calculated in accordance with generally  accepted  financial  practice) of less
than .....% per annum.]

      [If applicable, insert__ The sinking fund for this series provides for the
redemption on  ............  in each year  beginning  with the year .......  and
ending  with  the  year  ......  of  [if  applicable,  insert__  not  less  than
$..........   "mandatory sinking fund") and not more than] $.........  aggregate
principal  amount of Notes of this  series.  Notes of this  series  acquired  or
redeemed  by  the  Company  otherwise  than  through  [if  applicable,  insert__
mandatory]  sinking  fund  payments  may  be  credited  against  subsequent  [if
applicable,  insert__  mandatory] sinking fund payments otherwise required to be
made [if applicable, insert__ , in the inverse order in which they become due].]

      [If the Note is subject to redemption  of any kind,  insert__ In the event
of  redemption of this Note in part only, a new Note or Notes of this series and
of like tenor for the  unredeemed  portion  hereof will be issued in the name of
the Holder hereof upon the cancellation hereof.]

      [If applicable,  insert__ The Indenture contains provisions for defeasance
at any time of [the entire indebtedness of this Note] [or] [certain  restrictive
covenants and Events of Default with respect to this Note] [, in each case] upon
compliance with certain conditions set forth in the Indenture.]

      [If the Note is not an Original Issue Discount Note,  insert__ If an Event
of Default with  respect to Notes of this series shall occur and be  continuing,
the principal of the Notes of this series may be declared due and payable in the
manner and with the effect provided in the Indenture.]

      [If the Note is an Original Issue  Discount Note,  insert__ If an Event of
Default with respect to Notes of this series shall occur and be  continuing,  an
amount of  principal of the Notes of this series may be declared due and payable
in the manner and with the effect  provided in the Indenture.  Such amount shall
be equal to insert formula for determining  the amount.  Upon payment (i) of the
amount of  principal  so  declared  due and  payable and (ii) of interest on any
overdue principal, premium and interest (in each case to the extent that the
<PAGE>
payment of such  interest  shall be legally  enforceable),  all of the Company's
obligations  in  respect of the  payment of the  principal  of and  premium  and
interest, if any, on the Notes of this series shall terminate.]

      [If the Note is issued  before the Release  Date,  insert _ If an Event of
Default  shall  occur  and be  continuing,  the  principal  of the  Notes may be
declared  due and  payable in the manner  and with the  effect  provided  in the
Indenture and, upon such declaration, the Trustee can demand the acceleration of
the payment of principal of the Senior Note First  Mortgage Bonds as provided in
the Indenture.]

      The Indenture permits,  with certain  exceptions as therein provided,  the
amendment  thereof and the  modification  of the rights and  obligations  of the
Company and the rights of the Holders of the Notes of each series to be affected
under the  Indenture at any time by the Company and the Trustee with the consent
of the  Holders  of a  majority  in  principal  amount  of the Notes at the time
Outstanding  of  each  series  to  be  affected.  The  Indenture  also  contains
provisions  permitting the Holders of specified  percentages in principal amount
of the Notes of each series at the time Outstanding, on behalf of the Holders of
all Notes of such  series,  to waive  compliance  by the  Company  with  certain
provisions of the  Indenture  and certain past defaults  under the Indenture and
their consequences.  Any such consent or waiver by the Holder of this Note shall
be conclusive  and binding upon such Holder and upon all future  Holders of this
Note and of any Note  issued  upon the  registration  of  transfer  hereof or in
exchange therefor or in lieu hereof,  whether or not notation of such consent or
waiver is made upon this Note.

      As provided in and subject to the provisions of the Indenture,  the Holder
of this Note shall not have the right to institute any  proceeding  with respect
to the  Indenture  or for the  appointment  of a receiver  or trustee or for any
other  remedy  thereunder,  unless such Holder shall have  previously  given the
Trustee  written  notice of a  continuing  Event of Default  with respect to the
Notes of this series,  the Holders of not less than 25% in  principal  amount of
the Notes of this series at the time Outstanding shall have made written request
to the Trustee to institute  proceedings  in respect of such Event of Default as
Trustee and offered the Trustee reasonable indemnity,  and the Trustee shall not
have  received  from the Holders of a majority in  principal  amount of Notes of
this series at the time Outstanding a direction  inconsistent with such request,
and shall  have  failed to  institute  any such  proceeding,  for 60 days  after
receipt of such notice, request and offer of indemnity.  The foregoing shall not
apply to any suit  instituted by the Holder of this Note for the  enforcement of
any payment of  principal  hereof or any premium or interest  hereon on or after
the respective due dates expressed herein.

      No reference  herein to the  Indenture and no provision of this Note or of
the  Indenture  shall alter or impair the  obligation  of the Company,  which is
absolute and unconditional, to pay the principal of and any premium and interest
on this Note at the times,  place and rate, and in the coin or currency,  herein
prescribed.

      As provided in the  Indenture and subject to certain  limitations  therein
set forth,  the transfer of this Note is registrable in the Note Register,  upon
surrender of this Note for  registration  of transfer at the office or agency of
the Company in any place where the  principal of and any premium and interest on
this Note are payable,  duly endorsed by, or accompanied by a written instrument
of transfer in form  satisfactory  to the  Company and the
<PAGE>
Note  Registrar  duly  executed  by,  the  Holder  hereof or his  attorney  duly
authorized in writing, and thereupon one or more new Notes of this series and of
like tenor,  of authorized  denominations  and for the same aggregate  principal
amount, will be issued to the designated transferee or transferees.

      The Notes of this series are  issuable  only in  registered  form  without
coupons in  denominations  of $.......  and any integral  multiple  thereof.  As
provided in the Indenture and subject to certain  limitations therein set forth,
Notes of this series are exchangeable  for a like aggregate  principal amount of
Notes of this series and of like tenor of a different  authorized  denomination,
as requested by the Holder surrendering the same.

      No service charge shall be made for any such  registration  of transfer or
exchange,  but the Company may require  payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

      Prior to due presentment of this Note for  registration  of transfer,  the
Company,  the  Trustee and any agent of the Company or the Trustee may treat the
Person in whose  name  this  Note is  registered  as the  owner  hereof  for all
purposes,  whether or not this Note be overdue,  and neither  the  Company,  the
Trustee nor any such agent shall be affected by notice to the contrary.

      All terms used in this Note which are defined in the Indenture  shall have
the meanings assigned to them in the Indenture.


SECTION 204.  Form of Legend for Global Notes.

      Unless  otherwise  specified as  contemplated by Section 301 for the Notes
evidenced thereby, every Global Note authenticated and delivered hereunder shall
bear a legend in substantially the following form:

THIS NOTE IS A GLOBAL  NOTE  WITHIN  THE  MEANING OF THE  INDENTURE  HEREINAFTER
REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE  THEREOF.
THIS NOTE MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A NOTE REGISTERED, AND NO
TRANSFER OF THIS NOTE IN WHOLE OR IN PART MAY BE REGISTERED,  IN THE NAME OF ANY
PERSON OTHER THAN SUCH  DEPOSITARY OR A NOMINEE  THEREOF,  EXCEPT IN THE LIMITED
CIRCUMSTANCES DESCRIBED IN THE INDENTURE.
<PAGE>
SECTION 205.  Form of Trustee's Certificate of Authentication.

      The Trustee's certificates of authentication shall be in substantially the
following form:

      This is one of the Notes of the series  designated  therein referred to in
the within-mentioned Indenture.


                                                     THE BANK OF NEW YORK,
                                                      As Trustee


                                                      By........................
                                                            Authorized Signatory


                                  ARTICLE THREE

                                    THE NOTES


SECTION 301.  Amount Unlimited; Issuable in Series.

      The aggregate  principal  amount of Notes which may be  authenticated  and
delivered under this Indenture is unlimited.

      The Notes may be issued in one or more series.  There shall be established
by or pursuant to a Board  Resolution and, subject to Section 303, set forth, or
determined in the manner provided, in an Officers'  Certificate,  or established
in one or more indentures supplemental hereto, prior to the issuance of Notes of
any series,

      (1) the title of the Notes of the  series  (which  shall  distinguish  the
Notes of the series from Notes of any other series);

      (2) any  limit  upon the  aggregate  principal  amount of the Notes of the
series which may be authenticated and delivered under this Indenture (except for
Notes  authenticated  and  delivered  upon  registration  of transfer  of, or in
exchange for, or in lieu of, other Notes of the series  pursuant to Section 304,
305, 306, 1006 or 1207 and except for any Notes which,  pursuant to Section 303,
are deemed never to have been authenticated and delivered hereunder);

      (3) the  Person  to whom any  interest  on a Note of the  series  shall be
payable,  if other  than the  Person  in whose  name  that  Note (or one or more
Predecessor  Notes) is registered at the close of business on the Regular Record
Date for such interest;

      (4) the date or dates on which the principal of any Notes of the series is
payable;

      (5) the rate or  rates  at  which  any  Notes  of the  series  shall  bear
interest, if any, the date or dates from
<PAGE>
which any such interest  shall accrue,  the Interest  Payment Dates on which any
such interest  shall be payable,  the manner (if any) of  determination  of such
Interest Payment Dates and the Regular Record Date for any such interest payable
on any Interest Payment Date;

      (6) the right,  if any,  to extend the  interest  payment  periods and the
duration of such extension;

      (7) the  place or  places  where  the  principal  of and any  premium  and
interest on any Notes of the series shall be payable;

      (8) the period or periods  within which,  the price or prices at which and
the terms and conditions upon which any Notes of the series may be redeemed,  in
whole or in part,  at the option of the  Company  and,  if other than by a Board
Resolution,  the manner in which any election by the Company to redeem the Notes
shall be evidenced;

      (9) the obligation, if any, of the Company to redeem or purchase any Notes
of the series  pursuant to any sinking  fund or analogous  provisions  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  upon  which any Notes of the
series  shall be redeemed or  purchased,  in whole or in part,  pursuant to such
obligation;

      (10) if other  than  denominations  of $1,000  and any  integral  multiple
thereof, the denominations in which any Notes of the series shall be issuable;

      (11) if the amount of principal of or any premium or interest on any Notes
of the series may be  determined  with  reference  to an index or  pursuant to a
formula, the manner in which such amounts shall be determined;

      (12) 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 Notes of the  series  shall 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  the   definition  of
"Outstanding" in Section 101;

      (13) if the  principal  of or any  premium or interest on any Notes of the
series is to be payable,  at the election of the Company or the Holder  thereof,
in one or more  currencies  or currency  units other than that or those in which
such Notes are stated to be payable, the currency,  currencies or currency units
in which the  principal  of or any premium or interest on such Notes as to which
such election is made shall 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 shall be determined);

      (14) if other than the entire principal amount thereof, the portion of the
principal  amount  of any  Notes  of the  series  which  shall be  payable  upon
declaration of acceleration of the Maturity thereof pursuant to Section 602;

      (15) if the principal  amount payable at the Stated  Maturity of any Notes
of the series will not be  determinable as of any one or more dates prior to the
Stated Maturity,  the amount which shall be deemed to be the principal amount of
such  Notes  as of any  such  
<PAGE>
date for any purpose  thereunder  or hereunder,  including the principal  amount
thereof  which shall be due and payable upon any Maturity  other than the Stated
Maturity or which shall be deemed to be  Outstanding as of any date prior to the
Stated Maturity (or, in any such case, the manner in which such amount deemed to
be the principal amount shall be determined);

      (16) if  applicable,  that  the  Notes  of the  series,  in  whole  or any
specified part, shall be defeasible  pursuant to Section 1402 or Section 1403 or
both such Sections and, if other than by a Board Resolution, the manner in which
any election by the Company to defease such Notes shall be evidenced;

      (17) if  applicable,  that any Notes of the series  shall be  issuable  in
whole or in part in the form of one or more Global Notes and, in such case,  the
respective Depositaries for such Global Notes, the form of any legend or legends
which  shall be borne by any such  Global Note in addition to or in lieu of that
set forth in Section  204 and any  circumstances  in  addition  to or in lieu of
those set forth in Clause (2) of the last  paragraph of Section 305 in which any
such Global Note may be exchanged in whole or in part for Notes registered,  and
any transfer of such Global Note in whole or in part may be  registered,  in the
name or names of Persons  other than the  Depositary  for such  Global Note or a
nominee thereof;

      (18) if any Notes of the series shall be issued prior to the Release Date,
the  designation  of the  series  of  Senior  Note  First  Mortgage  Bonds to be
delivered  to the  Trustee in  connection  with the  issuance  of such series of
Notes;

      (19) any addition to or change in the Events of Default  which  applies to
any  Notes of the  series  and any  change in the  right of the  Trustee  or the
requisite  Holders of such Notes to declare the principal amount thereof due and
payable pursuant to Section 602;

      (20) any  addition  to or change  in the  covenants  set forth in  Article
Eleven which applies to Notes of the series; and

      (21) any other terms of the series (which terms shall not be  inconsistent
with the provisions of this Indenture, except as permitted by Section 1001(5)).

      All Notes of any one series shall be substantially  identical except as to
denomination and except as may otherwise be provided in or pursuant to the Board
Resolution  referred  to above  and  (subject  to  Section  303) set  forth,  or
determined  in the manner  provided,  in the Officers'  Certificate  referred to
above or in any such indenture supplemental hereto.

      If any of the terms of the series are established by action taken pursuant
to a Board Resolution,  a copy of an appropriate  record of such action shall be
certified  by  the  Secretary  or an  Assistant  Secretary  of the  Company  and
delivered  to  the  Trustee  at or  prior  to  the  delivery  of  the  Officers'
Certificate setting forth the terms of the series.
<PAGE>
SECTION 302.  Denominations.

      The Notes of each series shall be issuable only in fully  registered  form
without  coupons  and  only in such  denominations  as  shall  be  specified  as
contemplated  by Section 301. In the absence of any such specified  denomination
with  respect  to the Notes of any  series,  the Notes of such  series  shall be
issuable in denominations of $1,000 and any integral multiple thereof.


SECTION 303.  Execution, Authentication, Delivery and Dating.

      The Notes shall be  executed  on behalf of the Company by its  Chairman of
the Board,  its Vice  Chairman of the Board,  its  President  or one of its Vice
Presidents,  under  its  corporate  seal  reproduced  thereon  attested  by  its
Secretary or one of its  Assistant  Secretaries.  The  signature of any of these
officers on the Notes may be manual or facsimile.

      Notes bearing the manual or facsimile  signatures of individuals  who were
at any  time  the  proper  officers  of the  Company  shall  bind  the  Company,
notwithstanding  that such  individuals  or any of them have ceased to hold such
offices prior to the  authentication  and delivery of such Notes or did not hold
such offices at the date of such Notes.

      At any time and from time to time after the execution and delivery of this
Indenture,  the Company may deliver Notes of any series  executed by the Company
to the  Trustee  for  authentication,  together  with a  Company  Order  for the
authentication  and  delivery of such Notes and,  if prior to the Release  Date,
Senior Note First Mortgage Bonds of a series of Senior Note First Mortgage Bonds
conforming to the  requirements of Sections 401 and 402 hereof,  and the Trustee
in accordance with the Company Order shall  authenticate and deliver such Notes.
In  authenticating  such Notes,  and accepting the  additional  responsibilities
under this Indenture in relation to such Notes, the Trustee shall be entitled to
receive,  and (subject to Section 701) shall be fully protected in relying upon,
(1) if prior to the  Release  Date,  the  certificate  of an Expert  meeting the
requirements of Section 404(a) hereof and a series of Senior Note First Mortgage
Bonds  meeting the  requirements  of Section  403 hereof,  and (2) an Opinion of
Counsel stating,

      (A) if the form of such Notes has been established by or pursuant to Board
   Resolution or in a  supplemental  indenture as permitted by Section 201, that
   such  form has  been  duly  authorized  by the  Company  and  established  in
   conformity with the provisions of this Indenture;

      (B) if the terms of such Notes have been duly  authorized  by the  Company
   and  established  by or pursuant  to Board  Resolution  or in a  supplemental
   indenture as permitted by Section 301, that such terms have been  established
   in conformity with the provisions of this Indenture;

      (C) that such Notes,  when  authenticated and delivered by the Trustee and
   issued by the Company in the manner and subject to any  conditions  specified
   in such Opinion of Counsel,  will have been duly issued  under the  Indenture
   and will  constitute  valid and legally  binding  obligations of the Company,
   entitled  to the  benefits  provided by the  Indenture,  and  enforceable  in
   accordance with their terms,  subject to bankruptcy,  insolvency,  fraudulent
   transfer,   reorganization,   moratorium   and   similar   laws  of   general
   applicability  relating  to or  affecting  creditors'  rights  and to general
   equity principles; and 
<PAGE>
      (D) if prior to the  Release  Date,  that the Senior  Note First  Mortgage
   Bonds of the  related  series of  Senior  Note  First  Mortgage  Bonds  being
   delivered  to the Trustee in  connection  with the issuance of such series of
   Notes  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 First 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 First  Mortgage,  (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 Senior Note First  Mortgage Bonds and
   the First  Mortgage may be  unenforceable  under or limited by the law of the
   State of Arizona; and that such Senior Note First Mortgage Bonds are entitled
   to the benefits provided by the First Mortgage, equally and ratably, with all
   First  Mortgage  Bonds and other  Senior Note First  Mortgage  Bonds (if any)
   outstanding thereunder, except as to sinking fund provisions; and

      (E) that the  Company's  execution  and delivery of this  Indenture,  such
   Notes,  such First  Mortgage,  and any such Senior Note First  Mortgage Bonds
   have been duly authorized by the Arizona Corporation  Commission (the "ACC"),
   the  ACC  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  execution and delivery of this  Indenture,  such Notes,
   such First Mortgage, and any such Senior Note First Mortgage Bonds, 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.

If such  form or terms  have  been so  established,  the  Trustee  shall  not be
required to authenticate  such Notes if the issue of such Notes pursuant to this
Indenture will affect the Trustee's own rights,  duties or immunities  under the
Notes  and this  Indenture  or  otherwise  in a manner  which is not  reasonably
acceptable to the Trustee.

      Notwithstanding  the  provisions  of  Section  301  and of  the  preceding
paragraph, if all Notes of a series are not to be originally issued at one time,
it shall  not be  necessary  to  deliver  the  Officers'  Certificate  otherwise
required  pursuant to Section  301 or the  Company  Order and Opinion of Counsel
otherwise  required  pursuant  to such  preceding  paragraph  at or prior to the
authentication of each Note of such series if such documents are delivered at or
prior to the  authentication  upon  original  issuance of the first Note of such
series to be issued.

      Each Note shall be dated the date of its authentication.

      No Note shall be entitled to any benefit under this  Indenture or be valid
or obligatory for any purpose unless there appears on such Note a certificate of
authentication  substantially  in the form  provided for herein  executed by the
Trustee by manual  signature of an authorized  signatory,  and such  certificate
upon any Note shall be conclusive  evidence,  and the only  evidence,  that such
Note has been duly authenticated and delivered  hereunder.  Notwithstanding  the
foregoing, if any Note shall have been authenticated and delivered hereunder but
never issued and sold by the Company, and the Company shall deliver such Note to
the Trustee for  cancellation  as provided in Section  309,  for all purposes of
this  
<PAGE>
Indenture  such  Note  shall be  deemed  never to have  been  authenticated  and
delivered  hereunder  and  shall  never  be  entitled  to the  benefits  of this
Indenture.


SECTION 304.  Temporary Notes.

      Pending the preparation of definitive Notes of any series, the Company may
execute,  and upon Company  Order the Trustee  shall  authenticate  and deliver,
temporary Notes which are printed,  lithographed,  typewritten,  mimeographed or
otherwise produced, in any authorized  denomination,  substantially of the tenor
of the  definitive  Notes  in lieu of  which  they  are  issued  and  with  such
appropriate  insertions,  omissions,  substitutions  and other variations as the
officers executing such Notes may determine,  as evidenced by their execution of
such Notes.

      If  temporary  Notes of any  series are  issued,  the  Company  will cause
definitive Notes of that series to be prepared without unreasonable delay. After
the preparation of definitive Notes of such series,  the temporary Notes of such
series shall be exchangeable  for definitive Notes of such series upon surrender
of the temporary  Notes of such series at the office or agency of the Company in
a Place of Payment for that series, without charge to the Holder. Upon surrender
for  cancellation of any one or more temporary Notes of any series,  the Company
shall  execute  and the  Trustee  shall  authenticate  and  deliver in  exchange
therefor  one or more  definitive  Notes of the same series,  of any  authorized
denominations  and of like  tenor  and  aggregate  principal  amount.  Until  so
exchanged,  the temporary  Notes of any series shall in all respects be entitled
to the same benefits under this Indenture as definitive Notes of such series and
tenor.


SECTION 305.  Registration, Registration of Transfer and Exchange.

      The Company  shall cause to be kept at the  Corporate  Trust Office of the
Trustee a  register  (the  register  maintained  in such  office or in any other
office or agency of the  Company in a Place of Payment  being  herein  sometimes
referred  to as the "Note  Register")  in  which,  subject  to such  reasonable
regulations as it may prescribe,  the Company shall provide for the registration
of Notes and of  transfers  of Notes.  The  Trustee  is hereby  appointed "Note
Registrar" for the purpose of registering Notes and transfers of Notes as herein
provided.

      Upon surrender for registration of transfer of any Note of a series at the
office or agency of the  Company  in a Place of  Payment  for that  series,  the
Company shall execute,  and the Trustee shall  authenticate and deliver,  in the
name of the designated  transferee or transferees,  one or more new Notes of the
same series,  of any  authorized  denominations  and of like tenor and aggregate
principal amount.

      At the option of the  Holder,  Notes of any series  may be  exchanged  for
other Notes of the same  series,  of any  authorized  denominations  and of like
tenor  and  aggregate  principal  amount,  upon  surrender  of the  Notes  to be
exchanged at such office or agency.  Whenever any Notes are so  surrendered  for
exchange,  the Company shall  execute,  and the Trustee shall  authenticate  and
deliver, the Notes which the Holder making the exchange is entitled to receive.
<PAGE>
      All Notes  issued upon any  registration  of transfer or exchange of Notes
shall be the valid  obligations  of the Company,  evidencing  the same debt, and
entitled to the same benefits  under this  Indenture,  as the Notes  surrendered
upon such registration of transfer or exchange.

      Every Note presented or surrendered  for  registration  of transfer or for
exchange  shall (if so required by the Company or the Trustee) be duly endorsed,
or be accompanied by a written  instrument of transfer in form  satisfactory  to
the Company and the Note Registrar  duly executed,  by the Holder thereof or his
attorney duly authorized in writing.

      No  service  charge  shall be made for any  registration  of  transfer  or
exchange of Notes,  but the Company may require  payment of a sum  sufficient to
cover any tax or other  governmental  charge  that may be imposed in  connection
with any  registration  of transfer or exchange of Notes,  other than  exchanges
pursuant to Section 304, 1006 or 1207 not involving any transfer.

      If the Notes of any series (or of any series and  specified  tenor) are to
be  redeemed,  the Company  shall not be  required  (A) to issue,  register  the
transfer  of or  exchange  any  Notes  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 the mailing of a notice of  redemption of any
such Notes  selected for  redemption  and ending at the close of business on the
day of such mailing,  or (B) to register the transfer of or exchange any Note so
selected for redemption in whole or in part,  except the  unredeemed  portion of
any Note being redeemed in part.

      The  provisions of Clauses (1), (2), (3) and (4) below shall apply only to
Global Notes:

      (1)  Each  Global  Note  authenticated   under  this  Indenture  shall  be
   registered in the name of the Depositary designated for such Global Note or a
   nominee  thereof and  delivered to such  Depositary  or a nominee  thereof or
   custodian therefor,  and each such Global Note shall constitute a single Note
   for all purposes of this Indenture.

      (2) Notwithstanding any other provision in this Indenture,  no Global Note
   may be exchanged in whole or in part for 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 a nominee  thereof
   unless (A) such  Depositary (i) has notified the Company that it is unwilling
   or unable to continue as  Depositary  for such Global Note or (ii) has ceased
   to be a clearing  agency  registered  under the Exchange Act, (B) there shall
   have  occurred  and be  continuing  an Event of Default  with respect to such
   Global Note or (C) there shall exist such circumstances,  if any, in addition
   to or in lieu of the  foregoing  as have been  specified  for this purpose as
   contemplated by Section 301.

      (3) Subject to Clause (2) above,  any  exchange of a Global Note for other
   Notes may be made in whole or in part, and all Notes issued in exchange for a
   Global Note or any portion  thereof  shall be registered in such names as the
   Depositary for such Global Note shall direct.

      (4) Every Note  authenticated  and delivered upon registration of transfer
   of, or in exchange  for or in lieu of, a Global Note or any portion  thereof,
   whether  pursuant  to  this  Section,  Section  304,  306,  1006  or  1207 or
   otherwise, shall be authenticated and delivered
<PAGE>
   in   the   form  of,  and  shall  be,  a Global  Note,  unless  such  Note is
   registered in the name of a Person other than the  Depositary for such Global
   Note or a nominee thereof.

SECTION 306.  Mutilated, Destroyed, Lost and Stolen Notes.

      If any mutilated  Note is  surrendered  to the Trustee,  the Company shall
execute and the Trustee shall  authenticate  and deliver in exchange  therefor a
new Note of the same series and of like tenor and principal amount and bearing a
number not contemporaneously outstanding.

      If there shall be delivered to the Company and the Trustee (i) evidence to
their  satisfaction of the destruction,  loss or theft of any Note and (ii) such
security  or  indemnity  as may be required by them to save each of them and any
agent of either of them harmless,  then, in the absence of notice to the Company
or the Trustee that such Note has been  acquired by a bona fide  purchaser,  the
Company shall execute and the Trustee shall authenticate and deliver, in lieu of
any such  destroyed,  lost or stolen  Note, a new Note of the same series and of
like  tenor and  principal  amount and  bearing a number  not  contemporaneously
outstanding.

      In case any such mutilated,  destroyed,  lost or stolen Note has become or
is about to become due and payable,  the Company in its discretion may,  instead
of issuing a new Note, pay such Note.

      Upon the  issuance  of any new Note under this  Section,  the  Company may
require the payment of a sum  sufficient to cover any tax or other  governmental
charge that may be imposed in relation thereto and any other expenses (including
the fees and expenses of the Trustee) connected therewith.

      Every new Note of any series  issued  pursuant to this  Section in lieu of
any  destroyed,  lost or stolen Note shall  constitute  an  original  additional
contractual  obligation of the Company,  whether or not the  destroyed,  lost or
stolen Note shall be at any time enforceable by anyone, and shall be entitled to
all the benefits of this Indenture equally and proportionately  with any and all
other Notes of that series duly issued hereunder.

      The  provisions of this Section are  exclusive and shall  preclude (to the
extent lawful) all other rights and remedies with respect to the  replacement or
payment of mutilated, destroyed, lost or stolen Notes.


SECTION 307.  Payment of Interest; Interest Rights Preserved.

      Except as otherwise  provided as  contemplated by Section 301 with respect
to any series of Notes, interest on any Note which is payable, and is punctually
paid or duly  provided  for, on any  Interest  Payment Date shall be paid to the
Person in whose name that Note (or one or more Predecessor  Notes) is registered
at the close of business on the Regular Record Date for such interest.

      Any  interest  on any  Note of any  series  which is  payable,  but is not
punctually  paid or duly  provided  for, on any  Interest  Payment  Date (herein
called "Defaulted  Interest") shall forthwith cease to be payable to the Holder
on the relevant  Regular  Record Date by virtue of
<PAGE>
having been such Holder, and such Defaulted Interest may be paid by the Company,
at its election in each case, as provided in Clause (1) or (2) below:

            (1) The Company may elect to make payment of any Defaulted  Interest
      to the  Persons  in  whose  names  the  Notes  of such  series  (or  their
      respective Predecessor Notes) are registered at the close of business on a
      Special  Record Date for the  payment of such  Defaulted  Interest,  which
      shall be fixed in the  following  manner.  The  Company  shall  notify the
      Trustee in writing of the amount of Defaulted Interest proposed to be paid
      on each Note of such series and the date of the proposed  payment,  and at
      the same time the  Company  shall  deposit  with the  Trustee an amount of
      money equal to the aggregate amount proposed to be paid in respect of such
      Defaulted Interest or shall make arrangements  satisfactory to the Trustee
      for such  deposit  prior to the date of the proposed  payment,  such money
      when deposited to be held in trust for the benefit of the Persons entitled
      to such  Defaulted  Interest as in this  Clause  provided.  Thereupon  the
      Trustee shall fix a Special  Record Date for the payment of such Defaulted
      Interest  which  shall be not more  than 15 days and not less than 10 days
      prior to the date of the proposed  payment and not less than 10 days after
      the  receipt by the  Trustee of the notice of the  proposed  payment.  The
      Trustee shall promptly notify the Company of such Special Record Date and,
      in the name and at the expense of the  Company,  shall cause notice of the
      proposed  payment of such  Defaulted  Interest and the Special Record Date
      therefor  to be given to each Holder of Notes of such series in the manner
      set forth in  Section  106,  not less than 10 days  prior to such  Special
      Record Date. Notice of the proposed payment of such Defaulted Interest and
      the Special  Record Date therefor  having been so mailed,  such  Defaulted
      Interest  shall be paid to the  Persons  in whose  names the Notes of such
      series (or their respective Predecessor Notes) are registered at the close
      of  business  on such  Special  Record Date and shall no longer be payable
      pursuant to the following Clause (2).

            (2) The Company may make  payment of any  Defaulted  Interest on the
      Notes of any series in any other lawful manner not  inconsistent  with the
      requirements of any securities exchange on which such Notes may be listed,
      and upon such notice as may be required by such exchange, if, after notice
      given by the Company to the Trustee of the  proposed  payment  pursuant to
      this Clause,  such manner of payment  shall be deemed  practicable  by the
      Trustee.

      Subject to the foregoing  provisions of this Section,  each Note delivered
under this Indenture upon  registration  of transfer of or in exchange for or in
lieu of any other Note shall  carry the rights to  interest  accrued and unpaid,
and to accrue, which were carried by such other Note.


SECTION 308.  Persons Deemed Owners.

      Prior to due  presentment  of a Note for  registration  of  transfer,  the
Company,  the  Trustee and any agent of the Company or the Trustee may treat the
Person in whose name such Note is  registered  as the owner of such Note for the
purpose of  receiving  payment of  principal  of and any premium and (subject to
Section  307) any interest on such Note and for all other  purposes  whatsoever,
whether or not such Note be overdue,  and neither the  Company,  the
<PAGE>
Trustee nor any agent of the Company or the Trustee  shall be affected by notice
to the contrary.


SECTION 309.  Cancellation.

      All Notes surrendered for payment, redemption, registration of transfer or
exchange or for credit against any sinking fund payment shall, if surrendered to
any Person  other than the  Trustee,  be  delivered  to the Trustee and shall be
promptly cancelled by it. The Company may at any time deliver to the Trustee for
cancellation any Notes previously  authenticated  and delivered  hereunder which
the Company may have acquired in any manner  whatsoever,  and may deliver to the
Trustee (or to any other Person for  delivery to the  Trustee) for  cancellation
any Notes  previously  authenticated  hereunder which the Company has not issued
and sold, and all Notes so delivered shall be promptly cancelled by the Trustee.
No  Notes  shall  be  authenticated  in lieu  of or in  exchange  for any  Notes
cancelled as provided in this  Section,  except as  expressly  permitted by this
Indenture.  All  cancelled  Notes held by the  Trustee  shall be  disposed of as
directed by a Company Order;  provided,  however,  that the Trustee shall not be
required to destroy such cancelled Notes.


SECTION 310.  Computation of Interest.

      Except as otherwise  specified as contemplated by Section 301 for Notes of
any series,  interest on the Notes of each series shall be computed on the basis
of a 360-day year of twelve 30-day months.


SECTION 311.  CUSIP Numbers.

         The  Company  in issuing  the Notes may use  "CUSIP"  numbers  (if then
generally in use),  and, if so, the Trustee shall use "CUSIP" numbers in notices
of  redemption as a  convenience  to Holders;  provided that any such notice may
state  that no  representation  is made as to the  correctness  of such  numbers
either as printed on the Notes or as contained in any notice of a redemption and
that reliance may be placed only on the other identification  numbers printed on
the Notes,  and any such  redemption  shall not be  affected by any defect in or
omission of such numbers.


SECTION 312.   Payments on Senior Note First Mortgage Bonds.

      Subject to Article  Five hereof,  all payments  made by the Company to the
Trustee on a series of Senior Note First  Mortgage Bonds shall be applied by the
Trustee to pay,  when due,  principal of,  premium,  if any, and interest on the
related  series of Notes  and,  to the  extent so  applied,  shall  satisfy  the
Company's  obligations  on such  Notes.  The  Company  shall pay to the  Trustee
principal  of,  premium,  if any,  and interest on a series of Senior Note First
Mortgage  Bonds in a manner and at a time that will  enable the  Trustee to make
payments  when due, of the principal  of,  premium,  if any, and interest on the
related series of Notes.
<PAGE>
                                  ARTICLE FOUR

                        SENIOR NOTE FIRST MORTGAGE BONDS


SECTION 401.  Acceptance of Senior Note First Mortgage Bonds.

         At or prior to the time of issuance of a series of Notes  hereunder  at
any time prior to the Release Date, the Company shall deliver to the Trustee for
the benefit of the Holders of the Notes as described in Section 403 hereof,  and
the Trustee shall accept therefor,  Senior Note First Mortgage Bonds of a series
of Senior Note First  Mortgage Bonds not  theretofore  delivered to the Trustee,
registered  in the name of the Trustee and  conforming  to the  requirements  of
Section 402 hereof.


SECTION 402.  Terms of Senior Note First Mortgage Bonds.

         Each  series of Senior  Note  First  Mortgage  bonds  delivered  to the
Trustee  pursuant to Section 401 hereof shall 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 shall be in the same aggregate
principal  amount,  as  the  related  series  of  Notes  being  issued.

SECTION 403.  Senior Note First Mortgage Bonds as Security for Notes.

         Until the Release Date and subject to Article Five and Article Fourteen
hereof,  Senior Note First  Mortgage  Bonds  delivered to the  Trustee,  for the
benefit of the  Holders of a related  series of Notes,  shall  serve as security
for any and all  obligations  of the Company under such related series of Notes,
including,  but not limited to (1) the full and prompt  payment of the principal
and  premium,  if any,  on such Notes when and as the same shall  become due and
payable in accordance  with the terms and  provisions  of this  Indenture or the
Notes either at the Stated Maturity  thereof,  upon acceleration of the maturity
thereof or upon redemption,  and (2) the full and prompt payment of any interest
on such Notes when and as the same shall  become due and  payable in  accordance
with the terms and provisions of this Indenture or the Notes.

         Notwithstanding  anything in this  Indenture to the contrary,  from and
after the Release  Date,  the  obligation  of the Company to make  payment  with
respect to the principal of and premium, if any, and interest on the Senior Note
First Mortgage Bonds shall be deemed satisfied and discharged as provided in the
supplemental  trust indenture or indentures to the First Mortgage  creating such
Senior First Mortgage Bonds and the Senior Note First Mortgage Bonds shall cease
to secure in any manner Notes theretofore or subsequently issued. From and after
the Release Date, all Notes,  whether theretofore or subsequently  issued, shall
be unsecured,  and any  conditions to the issuance of Notes that refer or relate
to Senior Note First Mortgage Bonds or the First Mortgage shall be inapplicable.
Following  the Release Date,  the Company  shall cause the First  Mortgage to be
closed and the Company shall not issue any  additional  First  Mortgage Bonds or
Senior  Note  First  Mortgage  Bonds  under  the First  Mortgage.  Notice of the
occurrence  of the Release  Date shall be given by the Trustee to the Holders of
the Notes in the manner  provided  for in  Section  106 hereof not later than 30
days after the Company  notifies  the Trustee of the  occurrence  of the Release
Date.
<PAGE>
SECTION 404.  Fair Value Certificate.

         (a) Upon the  delivery  by the  Company to the  Trustee of Senior  Note
First  Mortgage  Bonds  pursuant  to  Section  401  hereof,  the  Company  shall
simultaneously  therewith  deliver to the Trustee a certificate of an Expert (1)
stating  that it is  familiar  with the  provisions  of such  Senior  Note First
Mortgage Bonds and of this Indenture;  (2) stating the principal  amount of such
Senior Note First Mortgage Bonds delivered,  the stated interest rate (or method
of  calculation  of interest) of such Senior Note First  Mortgage and the stated
maturity date of such Senior Note First  Mortgage  Bonds;  (3)  identifying  the
Notes being issued  contemporaneously  therewith, and (4) stating the fair value
to the Company of such Senior Note First  Mortgage  Bonds.  If the fair value to
the Company of the Senior Note First Mortgage  Bonds so delivered,  as described
in the certificate to be delivered pursuant to this Section 404(a),  both (l) is
equal to or exceeds (A) $25,000 and (B) 1% of the principal  amount of the Notes
outstanding at the date of delivery of such Senior Note First Mortgage Bonds and
(2)  together  with  the  fair  value  to  the  Company,  as  described  in  the
certificates delivered pursuant to this Section 404(a), of all other Senior Note
First Mortgage Bonds delivered to the Trustee since the commencement of the then
current calendar year, is equal to or exceeds 10% of the principal amount of the
Notes  outstanding  at the date of delivery  of such Senior Note First  Mortgage
Bonds,  then the  certificate  required  by this  Section  404(a)  shall  (1) be
delivered  by  an  independent   Expert  and  (2)  shall,  in  addition  to  the
certifications  described  above,  state the fair  value to the  Company  of all
Senior Note First  Mortgage Bonds  delivered to the Trustee  pursuant to Section
401  hereof  since  the  commencement  of the  then  current  year as to which a
certificate was not delivered by an Expert independent of the Company.

         (b) If Senior Note First Mortgage Bonds are delivered or surrendered to
the  Company  pursuant  to  Section  407  or  409  hereof,   the  Company  shall
simultaneously  therewith  deliver to the Trustee a certificate of an Expert (1)
stating  that it is  familiar  with the  provisions  of such  Senior  Note First
Mortgage Bonds and of this Indenture,  (2) stating the principal  amount of such
Senior  Note  First  Mortgage  Bonds so  delivered  or  surrendered,  the stated
interest rate (the method of  calculation of interest) of such Senior Note First
Mortgage Bonds,  and the stated maturity date of such Senior Note First Mortgage
Bonds, (3) if applicable,  identifying the Notes, the payment of the interest on
and  principal  of which has been  discharged  hereunder,  (4) stating that such
delivery  or  surrender   will  not  impair  the  lien  of  this   Indenture  in
contravention  of the  provisions  of this  Indenture.  If, prior to the Release
Date,  the fair value of the Senior Note First  Mortgage  Bonds so delivered and
surrendered,  as described in the  certificate to be delivered  pursuant to this
Section  404(b),  both (l) is equal to or exceeds  (A) $25,000 and (B) 1% of the
principal  amount of the Notes  outstanding at the date of delivery or surrender
of such Senior Note First  Mortgage  Bonds and (2) together with the fair value,
as described in the certificates  delivered  pursuant to this Section 404(b), of
all other  Senior  Note  First  Mortgage  Bonds  released  from the lien of this
Indenture since the  commencement of the then current calendar year, is equal to
or exceeds 10% of the principal  amount of the Notes  outstanding at the date of
delivery  or  surrender  of such  Senior  Note First  Mortgage  Bonds,  then the
certificate required by this Section 404(b) shall be delivered by an independent
Expert.
<PAGE>
         If, in connection  with a delivery or surrender of  outstanding  Senior
Note First  Mortgage Bonds provided for in subsection (a) or (b) of this Section
404,  as the case may be,  the  Company  provides  to the  trustee an Opinion of
Counsel stating that the certificate  described by the applicable  subsection is
not  required by law,  such  certificate  shall not be required to be  delivered
hereunder in connection with such delivery or surrender.


SECTION 405.  Senior Note First Mortgage Bonds Held by the Trustee.

         The Trustee,  as a Holder of Senior Note First  Mortgage  Bonds,  shall
attend a meeting of holders of First  Mortgage Bonds under the First Mortgage as
to which it receives due notice,  or, at its option,  shall deliver its proxy in
connection  therewith.  Either at such  meeting,  or otherwise  where consent of
holders  of First  Mortgage  Bonds  issued  under the First  Mortgage  is sought
without a meeting,  the Trustee shall vote all of the Senior Note First Mortgage
Bonds held by it, or shall consent or withhold its consent with respect thereto,
as directed  by the Holders of not less than a majority  in  aggregate principal
amount of the Outstanding Notes;  provided,  however, that the Trustee shall not
vote as such Holder of a particular  series of Senior Note First  Mortgage Bonds
in favor of, or give its consent to, any action which, in the Trustee's opinion,
would  materially  adversely  affect such  series of Senior Note First  Mortgage
Bonds in a manner not shared  generally by all other Senior Note First  Mortgage
Bonds,  except  upon  notification  by the Trustee to the Holders of the related
series of Outstanding  Notes of such proposal and consent thereto of the holders
of not less than a majority in  aggregate  principal  amount of the  Outstanding
Notes of such series.


SECTION 406.  No Transfer of Senior Note First Mortgage Bonds; Exception.

         Except as required to effect an assignment to a successor trustee under
this  Indenture  or pursuant  to Section 407 or Section 409 hereof,  the Trustee
shall not sell,  assign or transfer the Senior Note First Mortgage Bonds and the
Company shall issue stop transfer  instructions to the Mortgage  Trustee and any
transfer agent under the First Mortgage to effect  compliance  with this Section
406.


SECTION 407.  Delivery to the Company of all Senior Note First Mortgage Bonds.

         When the  obligation of the Company to make payment with respect to the
principal of and premium, if any, and interest on the Senior Note First Mortgage
Bonds shall be satisfied or deemed  satisfied  pursuant to Section 403,  Section
501 or Article Fourteen hereof,  the Trustee shall,  upon written request of the
Company and receipt of the certificate of the Expert described in Section 404(b)
hereof (if such certificate is then required by Section 404(b) hereof),  deliver
to the Company  without  charge  therefor all of the Senior Note First  Mortgage
Bonds, together with such appropriate  instruments of transfer or release as may
be reasonably  requested by the Company.  All Senior Note First  Mortgage  Bonds
delivered to the Company in accordance  with this Section 407 shall be delivered
by the Company to the First Mortgage Trustee for cancellation.


SECTION 408.  Further Assurances.
<PAGE>
         The Company, at its own expense,  shall do such further lawful acts and
things,  and execute  and  deliver  such  additional  conveyances,  assignments,
assurances,   agreements,  financing  statements  and  instruments,  as  may  be
necessary in order to further assign, assure, perfect and confirm to the Trustee
its  security  interest  in  the  Senior  Note  First  Mortgage  Bonds  and  for
maintaining, protecting and preserving such security interest.


SECTION 409.  Exchange and Surrender of Senior Note First Mortgage Bonds.

         At any time at the written direction of the Company,  the Trustee shall
surrender to the Company all or part of the Senior Note First  Mortgage Bonds in
exchange  for Senior  Note First  Mortgage  bonds equal in  aggregate  principal
amounts to, in different  denominations than but of the same series and with all
other terms identical to, the Senior Note First Mortgage Bonds so surrendered to
the Company.  In addition,  at any time a Note shall cease to be entitled to any
lien,  benefit or  security  under this  Indenture  pursuant  to Section  501 or
Article Fourteen  hereof,  the Trustee shall surrender an equal principal amount
of Senior Note First  Mortgage  Bonds of the  related  series to the Company for
cancellation.  The Trustee shall,  together with such Senior Note First Mortgage
Bonds,  deliver to the  Company  such  appropriate  instruments  of  transfer or
release as the Company may reasonably  request.  Prior to the surrender required
by this paragraph, the Trustee shall receive from the Company the following, and
(subject to Section 701 hereof) shall be fully protected in relying upon, (a) an
Officer's  Certificate stating (i) the aggregate outstanding principal amount of
the Senior Note First Mortgage  bonds of the series  surrendered by the Trustee,
after giving effect to such surrender,  (ii) the aggregate Outstanding principal
amount of the related  series of Notes,  (iii) that the  surrender of the Senior
Note First Mortgage  Bonds will not result in any default under this  Indenture,
and (iv) that any Senior  Note First  Mortgage  Bonds to be received in exchange
for the Senior  Note First  Mortgage  Bonds  being  surrendered  comply with the
provisions of this Section.

         The Company  shall not be permitted to cause the  surrender or exchange
of all or any part of a series of Senior Note First Mortgage Bonds  contemplated
in this Section, if, after such surrender or exchange, the aggregate outstanding
principal  amount of the  related  series of Notes  would  exceed the  aggregate
outstanding  principal amount of such series of Senior Note First Mortgage Bonds
held by the  Trustee.  Any Senior  Note First  Mortgage  Bonds  received  by the
Company  pursuant to this Section 409 shall be delivered to the Mortgage Trustee
for cancellation.

                                  ARTICLE FIVE

                           SATISFACTION AND DISCHARGE


SECTION 501.  Satisfaction and Discharge of Indenture.

      This  Indenture  shall upon Company  Request cease to be of further effect
(except as to any surviving  rights of  registration  of transfer or exchange of
Notes herein  expressly  provided for),  and the Trustee,  at the expense of the
Company,  shall  execute  proper  instruments  acknowledging   satisfaction  and
discharge of this Indenture, when
<PAGE>
      (1)   either

            (A) all Notes  theretofore  authenticated  and delivered (other than
      (i) Notes  which have been  destroyed,  lost or stolen and which have been
      replaced  or paid as  provided  in  Section  306 and (ii)  Notes for whose
      payment money has  theretofore  been  deposited in trust or segregated and
      held in trust by the  Company  and  thereafter  repaid to the  Company  or
      discharged  from such  trust,  as  provided  in  Section  1103)  have been
      delivered to the Trustee for cancellation; or

            (B) all such Notes not  theretofore  delivered  to the  Trustee  for
      cancellation

                     (i)   have become due and payable, or

                     (ii)  will   become   due   and  payable  at  their  Stated
         Maturity within one year, or

                     (iii) are to be called for redemption within one year under
         arrangements  satisfactory  to the  Trustee for the giving of notice of
         redemption  by the  Trustee  in the name,  and at the  expense,  of the
         Company,

      and the Company, in the case of (i), (ii) or (iii) above, has deposited or
      caused to be  deposited  with the  Trustee as trust funds in trust for the
      purpose  money in an amount  sufficient  to pay and  discharge  the entire
      indebtedness  on such Notes not  theretofore  delivered to the Trustee for
      cancellation,  for  principal  and any premium and interest to the date of
      such  deposit (in the case of Notes which have become due and  payable) or
      to the Stated Maturity or Redemption Date, as the case may be;

      (2) the  Company  has paid or  caused to be paid all  other  sums  payable
   hereunder by the Company; and

      (3) the Company has delivered to the Trustee an Officers'  Certificate and
   an Opinion of Counsel,  each stating  that all  conditions  precedent  herein
   provided for relating to the  satisfaction  and  discharge of this  Indenture
   have been complied with.

      Notwithstanding  the  satisfaction  and discharge of this  Indenture,  the
obligations of the Company to the Trustee under Section 707, the  obligations of
the Company to any  Authenticating  Agent under  Section 714 and, if money shall
have been deposited with the Trustee  pursuant to subclause (B) of Clause (1) of
this  Section,  the  obligations  of the Trustee  under Section 502 and the last
paragraph of Section 1103 shall survive.

      If the Notes are deemed paid and  discharged  pursuant to this Section 501
or defeased pursuant to Article Fourteen,  the obligation of the Company to make
payment  with respect to the  principal of and premium,  if any, and interest on
the Senior Note First  Mortgage  Bonds shall be  satisfied  and  discharged,  as
provided in the supplemental trust indenture or indentures to the First Mortgage
creating  such  Senior  Note  First  Mortgage  Bonds and the  Senior  Note First
Mortgage Bonds shall cease to secure the Notes in any manner.

      If the Company  shall have paid or caused to be paid the  principal of and
premium,  if any,  and  interest  on any Note,  as and when the same  shall have
become due and payable or
<PAGE>
the Company shall have delivered to the Trustee for cancellation any outstanding
Note,  such Note shall  cease to be  entitled  to any lien,  benefit or security
under this  Indenture.  Upon a Note of any series  ceasing to be entitled to any
lien, benefit or security under this Indenture, the obligation of the Company to
make payment with respect to principal of and premium, if any, and interest on a
principal amount of the related series of Senior Note First Mortgage Bonds equal
to the principal  amount of such Note shall be satisfied and discharged and such
portion of the principal  amount of such Senior Note First  Mortgage Bonds shall
cease to secure the Notes in any manner.


SECTION 502.  Application of Trust Money.

      Subject to the provisions of the last paragraph of Section 1103, all money
deposited  with the  Trustee  pursuant to Section 501 shall be held in trust and
applied  by it,  in  accordance  with  the  provisions  of the  Notes  and  this
Indenture,  to  the  payment,  either  directly  or  through  any  Paying  Agent
(including  the  Company  acting as its own  Paying  Agent) as the  Trustee  may
determine, to the Persons entitled thereto, of the principal and any premium and
interest for whose payment such money has been deposited with the Trustee.


                                   ARTICLE SIX

                                    REMEDIES


SECTION 601.  Events of Default.

      "Event of  Default",  wherever  used herein  with  respect to Notes of any
series,  means any one of the  following  events  (whatever  the reason for such
Event of Default and whether it shall be voluntary or involuntary or be effected
by operation of law or pursuant to any judgment, decree or order of any court or
any order, rule or regulation of any administrative or governmental body):

      (1)  default in the payment of any  interest  upon any Note of that series
   when it becomes due and payable, and continuance of such default for a period
   of 60 days; or

      (2) default in the payment of the  principal of or any premium on any Note
   of that series at its Maturity and continuance of such default for 5 days; or

      (3) default in the deposit of any sinking fund payment, when and as due by
   the terms of a Note of that  series and  continuance  of such  default  for 5
   days; or

      (4) default in the performance,  or breach, of any covenant or warranty of
   the Company in this Indenture (other than a covenant or warranty a default in
   whose  performance or whose breach is elsewhere in this Section  specifically
   dealt with or which has expressly been included in this Indenture  solely for
   the benefit of series of Notes other than that series),  and  continuance  of
   such default or breach for a period of 90 days after there has been given, by
   registered or certified mail, to the Company by the Trustee or to the Company
   and the  Trustee  by the  Holders of a majority  in  principal  amount of the
<PAGE>
   Outstanding  Notes of that series a written notice specifying such default or
   breach and  requiring  it to be remedied  and  stating  that such notice is a
   "Notice of Default" hereunder; or

      (5)  prior to the  Release  Date,  a  Default  (as  defined  in the  First
   Mortgage)  has occurred and is  continuing,  and the  Mortgage  Trustee,  the
   Company  or Holders of at least 25% in  principal  amount of the  outstanding
   Notes shall have given written notice thereof to the Trustee;

      (6) the entry by a court  having  jurisdiction  in the  premises  of (A) a
   decree or order for relief in respect of the Company in an  involuntary  case
   or proceeding under any applicable  Federal or State bankruptcy,  insolvency,
   reorganization  or other  similar law or (B) a decree or order  adjudging the
   Company a bankrupt or  insolvent,  or approving as properly  filed a petition
   seeking  reorganization,  arrangement,  adjustment  or  composition  of or in
   respect  of the  Company  under  any  applicable  Federal  or State  law,  or
   appointing a custodian, receiver, liquidator, assignee, trustee, sequestrator
   or other similar  official of the Company or of any  substantial  part of its
   property,  or ordering the winding up or liquidation of its affairs,  and the
   continuance  of any such decree or order for relief or any such other  decree
   or order unstayed and in effect for a period of 90 consecutive days;

      (7) the  commencement  by the  Company of a voluntary  case or  proceeding
   under any applicable Federal or State bankruptcy, insolvency,  reorganization
   or other similar law or of any other case or  proceeding to be  adjudicated a
   bankrupt or insolvent, or the consent by it to the entry of a decree or order
   for relief in respect of the  Company in an  involuntary  case or  proceeding
   under any applicable Federal or State bankruptcy, insolvency,  reorganization
   or other similar law or to the  commencement  of any bankruptcy or insolvency
   case or proceeding against it, or the filing by it of a petition or answer or
   consent  seeking  reorganization  or relief under any  applicable  Federal or
   State law,  or the  consent by it to the  filing of such  petition  or to the
   appointment  of or taking  possession by a custodian,  receiver,  liquidator,
   assignee,  trustee,  sequestrator or other similar official of the Company or
   of any substantial part of its property, or the making by it of an assignment
   for the  benefit  of  creditors,  or the  admission  by it in  writing of its
   inability  to pay its debts  generally  as they  become due, or the taking of
   corporate action by the Company in furtherance of any such action; or

      (8) any other  Event of  Default  provided  with  respect to Notes of that
   series.

SECTION 602.  Acceleration of Maturity; Rescission and Annulment.

      If an Event of  Default  (other  than an Event  of  Default  specified  in
Section  601(6)  or  601(7))  with  respect  to Notes of any  series at the time
Outstanding occurs and is continuing, then in every such case the Trustee or the
Holders of a  majority  in  principal  amount of the  Outstanding  Notes of that
series may declare the principal  amount of all the Notes of that series (or, if
any Notes of that series are Original Issue Discount Notes,  such portion of the
principal  amount of such Notes as may be specified by the terms  thereof) to be
due and payable  immediately,  by a notice in writing to the Company (and to the
Trustee  if given by  Holders),  and upon any such  declaration  such  principal
amount (or specified  amount) shall become  immediately  due and payable.  If an
Event of Default  specified in Section 601(6) or 601(7) with respect to Notes of
any series at the time Outstanding occurs, the principal 
<PAGE>
amount of all the Notes of that  series  (or,  if any Notes of that  series  are
Original  Issue  Discount  Notes,  such portion of the principal  amount of such
Notes as may be specified by the terms thereof) shall automatically, and without
any declaration or other action on the part of the Trustee or any Holder, become
immediately  due and  payable.  Upon such  Notes  becoming  immediately  due and
payable,  by  declaration  or  otherwise,  pursuant  to  any  of  the  foregoing
provisions  of this  Section  602,  the  Trustee can  immediately  file with the
Mortgage  Trustee  a written  demand  for the  acceleration  of the  payment  of
principal  of all Senior Note First  Mortgage  Bonds  relating to such series of
outstanding  Notes  pursuant to the  applicable  provisions of the  supplemental
indenture  to the First  Mortgage  relating to such  Senior Note First  Mortgage
Bonds.

      At any time after such a declaration of acceleration with respect to Notes
of any series has been made and before a judgment  or decree for  payment of the
money due has been  obtained  by the  Trustee  as  hereinafter  in this  Article
provided,  and prior to the receipt of the Trustee from the Mortgage  Trustee of
an  irrevocable,   valid  and  unconditional   notice  to  the  Trustee  of  the
acceleration of the payment of principal, by declaration or otherwise, of all of
the Senior Note First  Mortgage  Bonds  relating  to such  series of Notes,  the
related Event of Default and its consequences (including,  if given, the written
demand for the  acceleration of the payment of principal of all such Senior Note
First Mortgage Bonds) will be  automatically  waived,  resulting in an automatic
rescission and annulment of the acceleration of the Notes if

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

            (A) all overdue interest on all Notes of that series,

            (B) the  principal  of (and  premium,  if any, on) any Notes of that
      series  which  have  become  due  otherwise  than by such  declaration  of
      acceleration  and any  interest  thereon  at the rate or rates  prescribed
      therefor in such Notes,

            (C) to the extent that payment of such interest is lawful,  interest
      upon  overdue  interest at the rate or rates  prescribed  therefor in such
      Notes, and

            (D) all sums  paid or  advanced  by the  Trustee  hereunder  and the
      reasonable  compensation,  expenses,  disbursements  and  advances  of the
      Trustee, its agents and counsel;

   and

      (2) all Events of Default with respect to Notes of that series, other than
   the  non-payment  of the  principal of Notes of that series which have become
   due solely by such  declaration of  acceleration,  have been cured (including
   any Defaults (as defined in the First Mortgage) under the First Mortgage,  as
   evidenced  by  notice  thereof  received  by the  Trustee  from the  Mortgage
   Trustee) or waived as provided in Section 613 or under the First Mortgage.

No such  rescission  shall  affect  any  subsequent  default or impair any right
consequent thereon.
<PAGE>
SECTION 603.  Collection of Indebtedness and Suits for Enforcement by Trustee.

      The Company covenants that if

      (1) default is made in the  payment of any  interest on any Note when such
   interest  becomes due and payable and such default  continues for a period of
   60 days, or

      (2) default is made in the payment of the  principal  of (or  premium,  if
   any, on) any Note at the Maturity  thereof and such default  continues  for a
   period of 5 days,

the Company will, upon demand of the Trustee,  pay to it, for the benefit of the
Holders of such Notes,  the whole  amount then due and payable on such Notes for
principal  and any premium and interest  and, to the extent that payment of such
interest  shall be legally  enforceable,  interest on any overdue  principal and
premium and on any overdue interest, at the rate or rates prescribed therefor in
such Notes, and, in addition thereto, such further amount as shall be sufficient
to cover  the  costs  and  expenses  of  collection,  including  the  reasonable
compensation,  expenses,  disbursements and advances of the Trustee,  its agents
and counsel.

      If an Event of Default with  respect to Notes of any series  occurs and is
continuing, the Trustee may in its discretion proceed to protect and enforce its
rights  (including,  prior to the Release  Date, to exercise any rights that the
Trustee may have as a holder of Senior Note First  Mortgage  Bonds of the series
relating  to the series of such Notes) and the rights of the Holders of Notes of
such series by such appropriate  judicial  proceedings as the Trustee shall deem
most effectual to protect and enforce any such rights,  whether for the specific
enforcement  of any  covenant or  agreement  in this  Indenture or in aid of the
exercise of any power granted herein, or to enforce any other proper remedy.


SECTION 604.  Trustee May File Proofs of Claim.

      In case of any judicial  proceeding  relative to the Company (or any other
obligor upon the Notes),  its property or its  creditors,  the Trustee  shall be
entitled and empowered, by intervention in such proceeding or otherwise, to take
any and all actions  authorized  under the Trust  Indenture Act in order to have
claims of the Holders and the Trustee (including, prior to the Release Date, any
claims of the Trustee as holder of Senior Note First Mortgage  Bonds) allowed in
any such proceeding.  In particular,  the Trustee shall be authorized to collect
and  receive any moneys or other  property  payable or  deliverable  on any such
claims  and to  distribute  the same;  and any  custodian,  receiver,  assignee,
trustee, liquidator, sequestrator or other similar official in any such judicial
proceeding  is hereby  authorized  by each  Holder to make such  payments to the
Trustee and, in the event that the Trustee  shall  consent to the making of such
payments  directly to the  Holders,  to pay to the Trustee any amount due it for
the  reasonable  compensation,  expenses,  disbursements  and  advances  of  the
Trustee,  its agents and counsel,  and any other  amounts due the Trustee  under
Section 707.

      No provision of this Indenture shall be deemed to authorize the Trustee to
authorize  or  consent to or accept or adopt on behalf of any Holder any plan of
reorganization,  arrangement,  adjustment or composition  affecting the Notes or
the rights of any Holder  thereof or to authorize the Trustee to vote in respect
of the claim of any Holder in any such 
<PAGE>
proceeding;  provided,  however, that the Trustee may, on behalf of the Holders,
vote for the election of a trustee in  bankruptcy  or similar  official and be a
member of a creditors' or other similar committee.


SECTION 605.  Trustee May Enforce Claims Without Possession of Notes.

      All rights of action and claims  under this  Indenture or the Notes may be
prosecuted  and  enforced by the Trustee  without the  possession  of any of the
Notes or the production thereof in any proceeding relating thereto, and any such
proceeding instituted by the Trustee shall be brought in its own name as trustee
of an express trust, and any recovery of judgment shall, after provision for the
payment of the reasonable compensation,  expenses, disbursements and advances of
the Trustee,  its agents and counsel,  be for the ratable benefit of the Holders
of the Notes in respect of which such judgment has been recovered.


SECTION 606.  Application of Money Collected.

      Any money  collected  by the  Trustee  pursuant to this  Article  shall be
applied in the following  order,  at the date or dates fixed by the Trustee and,
in case of the distribution of such money on account of principal or any premium
or interest,  upon  presentation  of the Notes and the  notation  thereon of the
payment if only partially paid and upon surrender thereof if fully paid:

   FIRST:  To the payment of all amounts due the Trustee under Section 707;

   SECOND:  To the payment of the amounts  then due and unpaid for  principal of
and any premium and interest on the Notes in respect of which or for the benefit
of which such money has been collected,  ratably, without preference or priority
of any  kind,  according  to the  amounts  due and  payable  on such  Notes  for
principal and any premium and interest, respectively; and

   THIRD:  To the payment of the  balance,  if any, to the Company  or any other
Person or Persons legally entitled thereto.


SECTION 607.  Limitation on Suits.

      No Holder of any Note of any series shall have any right to institute  any
proceeding,  judicial or otherwise,  with respect to this Indenture,  or for the
appointment of a receiver or trustee, or for any other remedy hereunder, unless

      (1) such Holder has  previously  given written  notice to the Trustee of a
   continuing Event of Default with respect to the Notes of that series;

      (2)  the  Holders  of  not  less  than  25%  in  principal  amount  of the
   Outstanding  Notes of that  series  shall  have made  written  request to the
   Trustee to institute  proceedings  in respect of such Event of Default in its
   own name as Trustee hereunder;
<PAGE>
      (3)  such  Holder  or  Holders  have  offered  to the  Trustee  reasonable
   indemnity  against  the costs,  expenses  and  liabilities  to be incurred in
   compliance with such request;

      (4) the Trustee for 60 days after its receipt of such notice,  request and
   offer of indemnity has failed to institute any such proceeding; and

      (5) no direction  inconsistent with such written request has been given to
   the  Trustee  during  such  60-day  period by the  Holders of a  majority  in
   principal amount of the Outstanding Notes of that series;

it being  understood and intended that no one or more of such Holders shall have
any right in any manner  whatever by virtue of, or by availing of, any provision
of this  Indenture to affect,  disturb or  prejudice  the rights of any other of
such Holders,  or to obtain or to seek to obtain priority or preference over any
other of such  Holders or to enforce any right under this  Indenture,  except in
the manner herein  provided and for the equal and ratable benefit of all of such
Holders.


SECTION 608.  Unconditional Right of Holders to Receive  Principal, Premium  and
              Interest.

      Notwithstanding  any other provision in this Indenture,  the Holder of any
Note shall have the  right,  which is  absolute  and  unconditional,  to receive
payment of the  principal  of and any  premium  and  (subject  to  Section  307)
interest on such Note on the respective Stated Maturities expressed in such Note
(or, in the case of redemption,  on the  Redemption  Date) and to institute suit
for the  enforcement of any such payment,  and such rights shall not be impaired
without the consent of such Holder.


SECTION 609.  Restoration of Rights and Remedies.

      If the Trustee or any Holder has  instituted any proceeding to enforce any
right or remedy under this Indenture and such  proceeding has been  discontinued
or abandoned for any reason, or has been determined  adversely to the Trustee or
to such Holder,  then and in every such case,  subject to any  determination  in
such  proceeding,  the  Company,  the Trustee and the Holders  shall be restored
severally and  respectively to their former  positions  hereunder and thereafter
all rights and remedies of the Trustee and the Holders shall  continue as though
no such proceeding had been instituted.

SECTION 610.  Rights and Remedies Cumulative.

      Except as otherwise provided with respect to the replacement or payment of
mutilated, destroyed, lost or stolen Notes in the last paragraph of Section 306,
no right or remedy  herein  conferred  upon or reserved to the Trustee or to the
Holders is intended  to be  exclusive  of any other  right or remedy,  and every
right and remedy shall,  to the extent  permitted by law, be  cumulative  and in
addition to every other right and remedy  given  hereunder  or now or  hereafter
existing at law or in equity or  otherwise.  The  assertion or employment of any
right 
<PAGE>
or remedy hereunder, or otherwise, shall not prevent the concurrent assertion or
employment of any other appropriate right or remedy.


SECTION 611.  Delay or Omission Not Waiver.

      No delay or  omission  of the  Trustee  or of any  Holder  of any Notes to
exercise any right or remedy accruing upon any Event of Default shall impair any
such right or remedy or  constitute  a waiver of any such Event of Default or an
acquiescence therein.  Every right and remedy given by this Article or by law to
the Trustee or to the Holders may be exercised  from time to time,  and as often
as may be deemed  expedient,  by the Trustee or by the Holders,  as the case may
be.


SECTION 612.  Control by Holders.

      The Holders of a majority in principal amount of the Outstanding  Notes of
any  series  shall  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 Notes of such
series, provided that

      (1) such  direction  shall not be in conflict with any rule of law or with
   this Indenture,

      (2) the Trustee  may take any other  action  deemed  proper by the Trustee
   which is not inconsistent with such direction, and

      (3) subject to the  provisions  of Section 701, the Trustee shall have the
   right to decline to follow any such  direction  if the  Trustee in good faith
   shall,  by a Responsible  Officer or Officers of the Trustee,  determine that
   the proceeding so directed would involve the Trustee in personal liability.


SECTION 613.  Waiver of Past Defaults.

      The  Holders  of not less  than a  majority  in  principal  amount  of the
Outstanding Notes of any series may on behalf of the Holders of all the Notes of
such series waive any past default hereunder with respect to such series and its
consequences, except a default

      (1) in the payment of the  principal  of or any premium or interest on any
   Note of such series, or

      (2) in respect of a covenant or provision  hereof which under  Article Ten
   cannot be  modified  or  amended  without  the  consent of the Holder of each
   Outstanding Note of such series affected.

      Upon any such waiver,  such default shall cease to exist, and any Event of
Default arising  therefrom shall be deemed to have been cured, for every purpose
of this  Indenture;  but no such waiver shall extend to any  subsequent or other
default or impair any right consequent thereon.
<PAGE>
SECTION 614.  Undertaking for Costs.

      In any  suit  for the  enforcement  of any  right  or  remedy  under  this
Indenture,  or in any suit against the Trustee for any action taken, suffered or
omitted by it as Trustee, a court may require any party litigant in such suit to
file an  undertaking to pay the costs of such suit, and may assess costs against
any such party  litigant,  in the manner and to the extent provided in the Trust
Indenture  Act;  provided that neither this Section nor the Trust  Indenture Act
shall be deemed to authorize any court to require such an undertaking or to make
such an assessment in any suit instituted by the Company or the Trustee.


SECTION 615.  Waiver of Usury, Stay or Extension Laws.

      The Company  covenants  (to the extent that it may lawfully do so) that it
will not at any time insist upon, or plead, or in any manner whatsoever claim or
take the benefit or  advantage  of, any usury,  stay or  extension  law wherever
enacted,  now or at any time hereafter in force,  which may affect the covenants
or the performance of this Indenture; and the Company (to the extent that it may
lawfully do so) hereby expressly waives all benefit or advantage of any such law
and  covenants  that it will not hinder,  delay or impede the  execution  of any
power herein granted to the Trustee, but will suffer and permit the execution of
every such power as though no such law had been enacted.


                                  ARTICLE SEVEN

                                   THE TRUSTEE


SECTION 701.  Certain Duties and Responsibilities.

      The duties and responsibilities of the Trustee shall be as provided by the
Trust Indenture Act, and no implied  covenants or obligations shall be read into
this Indenture against the Trustee. The phrase "default (as such term is defined
in such  indenture)"  as it appears in Section  315 of the Trust  Indenture  Act
shall mean an Event of Default  with  respect to a series of Notes  which  shall
have occured and is continuing.  Notwithstanding the foregoing, no provision of
this  Indenture  shall  require  the  Trustee to expend or risk its own funds or
otherwise incur any financial  liability in the performance of any of its duties
hereunder,  or in the exercise of any of its rights or powers,  if it shall have
reasonable  grounds  for  believing  that  repayment  of such funds or  adequate
indemnity  against  such risk or  liability  is not  reasonably  assured  to it.
Whether or not therein expressly so provided,  every provision of this Indenture
relating to the conduct or affecting the liability of or affording protection to
the Trustee shall be subject to the provisions of this Section.

SECTION 702.  Notice of Defaults.

      If a default  occurs  hereunder  with respect to Notes of any series,  the
Trustee  shall give the Holders of Notes of such series  notice of such  default
known to the Trustee as and to the extent  provided by the Trust  Indenture Act;
provided, however, that in the case of any default of the character specified in
Section  601(4) with respect to Notes of such series,  no such notice to Holders
shall be given  until at least 30 days  after the  occurrence  thereof.  For the
purpose of this Section,  the term "default"  means any event which is, or after
notice or lapse of time or both would  become,  an Event of Default with respect
to Notes of such series.
<PAGE>
SECTION 703.  Certain Rights of Trustee.

      Subject to the provisions of Section 701:

      (1) the Trustee may rely and shall be  protected  in acting or  refraining
   from acting upon any resolution, certificate, statement, instrument, opinion,
   report, notice, request,  direction,  consent, order, bond, debenture,  note,
   other evidence of indebtedness  or other paper or document  believed by it to
   be  genuine  and to have been  signed or  presented  by the  proper  party or
   parties;

      (2) any request or  direction  of the Company  mentioned  herein  shall be
   sufficiently  evidenced  by a  Company  Request  or  Company  Order,  and any
   resolution  of the Board of Directors  shall be  sufficiently  evidenced by a
   Board Resolution;

      (3) whenever in the  administration  of this  Indenture  the Trustee shall
   deem it  desirable  that a matter be proved or  established  prior to taking,
   suffering  or  omitting  any action  hereunder,  the  Trustee  (unless  other
   evidence be herein specifically  prescribed) may, in the absence of bad faith
   on its part, rely upon an Officers' Certificate;

      (4) the Trustee may consult with counsel of its  selection  and the advice
   of such  counsel  or any  Opinion  of  Counsel  shall  be full  and  complete
   authorization  and  protection  in respect of any action  taken,  suffered or
   omitted by it hereunder in good faith and in reliance thereon;

      (5) the Trustee shall be under no obligation to exercise any of the rights
   or powers  vested in it by this  Indenture at the request or direction of any
   of the Holders  pursuant to this  Indenture,  unless such Holders  shall have
   offered to the Trustee  reasonable  security or indemnity  against the costs,
   expenses and  liabilities  which might be incurred by it in  compliance  with
   such request or direction;

      (6) the  Trustee  shall  not be bound to make any  investigation  into the
   facts  or  matters  stated  in  any   resolution,   certificate,   statement,
   instrument,  opinion,  report, notice,  request,  direction,  consent, order,
   bond,  debenture,  note,  other  evidence of  indebtedness  or other paper or
   document,  but the Trustee, in its discretion,  may make such further inquiry
   or  investigation  into such facts or matters as it may see fit,  and, if the
   Trustee shall  determine to make such further  inquiry or  investigation,  it
   shall be entitled to examine the books,  records and premises of the Company,
   personally or by agent or attorney;

      (7) the  Trustee  may  execute  any of the trusts or powers  hereunder  or
   perform  any duties  hereunder  either  directly  or by or through  agents or
   attorneys  and the Trustee  shall not be  responsible  for any  misconduct or
   negligence on the part of any agent or attorney appointed with due care by it
   hereunder; and

      (8) except as other provided in Section  601(4),  the Trustee shall not be
   charged with knowledge of any default or Event of Default unless either (i) a
   Responsible Officer of the Trustee assigned to the Corporate Trust Department
   of the Trustee (or any successor division or department of the Trustee) shall
   have actual  knowledge  of the default or Event of Default,  or (ii)  written
   notice of such  default  or Event of  Default  shall  have been  given
<PAGE>
   to the  Trustee  by the  Company,  any other  obligor  on the Notes or by any
   Holder  of such  Notes or, in the case of an Event of  Default  described  in
   Section  601(5)  by the  Mortgage  Trustee  or  Holders  of at  least  25% in
   principal amount of the Outstanding Notes.

SECTION 704.  Not Responsible for Recitals or Issuance of Notes.

      The  recitals  contained  herein  and in the Notes,  except the  Trustee's
certificates of authentication, shall be taken as the statements of the Company,
and neither the Trustee nor any Authenticating  Agent assumes any responsibility
for their  correctness.  The Trustee makes no representations as to the validity
or sufficiency  of this  Indenture or of the Notes or as to the value,  title or
validity of any Senior Note First Mortgage Bonds or other securities at any time
pledged or deposited  with the Trustee  hereunder or as to the security  offered
thereby or hereby.  Neither the Trustee  nor any  Authenticating  Agent shall be
accountable  for the use or  application by the Company of Notes or the proceeds
thereof or of any moneys paid to the Company  under any  provision  hereof.  The
Trustee shall not be  responsible  for recording or filing this  Indenture,  any
indenture  supplemented hereto or any financing or continuation statement in any
public office or elsewhere at any time or times.


SECTION 705.  May Hold Notes.

      The  Trustee,  any  Authenticating  Agent,  any  Paying  Agent,  any  Note
Registrar  or any other agent of the  Company,  in its  individual  or any other
capacity,  may become the owner or pledgee of Notes and, subject to Sections 608
and 613, may otherwise  deal with the Company with the same rights it would have
if it were not Trustee,  Authenticating  Agent,  Paying Agent, Note Registrar or
such other agent.


SECTION 706.  Money Held in Trust.

      Money held by the Trustee in trust  hereunder need not be segregated  from
other funds except to the extent  required by law. The Trustee shall be under no
liability for interest on any money received by it hereunder except as otherwise
agreed in writing with the Company.
<PAGE>
SECTION 707.  Compensation and Reimbursement.

      The Company agrees

      (1) to pay to the Trustee from time to time such  compensation as shall be
   agreed to in writing  between the  Company  and the Trustee for all  services
   rendered  by it  hereunder  (which  compensation  shall not be limited by any
   provision  of law in regard to the  compensation  of a trustee  of an express
   trust);

      (2) except as  otherwise  expressly  provided  herein,  to  reimburse  the
   Trustee  upon its  request for all  reasonable  expenses,  disbursements  and
   advances  incurred or made by the Trustee in accordance with any provision of
   this Indenture  (including the reasonable  compensation  and the expenses and
   disbursements   of  its  agents  and  counsel),   except  any  such  expense,
   disbursement  or  advance as may be  attributable  to its  negligence  or bad
   faith; and

      (3) to indemnify  the Trustee for,  and to hold it harmless  against,  any
   loss,  liability or expense incurred  without  negligence or bad faith on its
   part,  arising out of or in connection with the acceptance or  administration
   of the trust or  trusts  hereunder,  including  the  costs  and  expenses  of
   defending  itself  against  any claim or  liability  in  connection  with the
   exercise or performance of any of its powers or duties hereunder.

      The  Trustee  shall have a lien prior to the Notes upon all  property  and
funds held by it hereunder  for any amount owing it or any  predecessor  Trustee
pursuant to this Section 707, except with respect to funds held in trust for the
benefit of the Holders of particular Notes.

      Without limiting any rights available to the Trustee under applicable law,
when the Trustee incurs expenses or renders services in connection with an Event
of  Default  specified  in  Section  601(6)  or  Section  601(7),  the  expenses
(including  the  reasonable  charges  and  expenses  of  its  counsel)  and  the
compensation   for  the  services  are  intended  to   constitute   expenses  of
administration  under any applicable Federal or State bankruptcy,  insolvency or
other similar law.

      The  provisions  of this Section  shall  survive the  termination  of this
Indenture.


SECTION 708.  Conflicting Interests.

      If the  Trustee has or shall  acquire a  conflicting  interest  within the
meaning of the Trust  Indenture  Act, the Trustee  shall either  eliminate  such
interest or resign,  to the extent and in the manner provided by, and subject to
the provisions  of, the Trust  Indenture Act and this  Indenture.  To the extent
permitted  by such Act,  the Trustee  shall not be deemed to have a  conflicting
interest by virtue of being a trustee under this Indenture with respect to Notes
of more than one series.
<PAGE>
SECTION 709.  Corporate Trustee Required; Eligibility.

      There  shall at all  times be one (and only one)  Trustee  hereunder  with
respect to the Notes of each series, which may be Trustee hereunder for Notes of
one or more  other  series.  Each  Trustee  shall be a Person  that is  eligible
pursuant to the Trust  Indenture  Act to act as such and has a combined  capital
and surplus of at least  $50,000,000.  If any such Person  publishes  reports of
condition  at least  annually,  pursuant  to law or to the  requirements  of its
supervising or examining authority, then for the purposes of this Section and to
the extent  permitted  by the Trust  Indenture  Act,  the  combined  capital and
surplus of such Person shall be deemed to be its combined capital and surplus as
set forth in its most recent  report of condition so  published.  If at any time
the Trustee  with  respect to the Notes of any series shall cease to be eligible
in accordance with the provisions of this Section,  it shall resign  immediately
in the manner and with the effect hereinafter specified in this Article.


SECTION 710.  Resignation and Removal; Appointment of Successor.

      No resignation or removal of the Trustee and no appointment of a successor
Trustee  pursuant to this Article shall become effective until the acceptance of
appointment  by  the  successor   Trustee  in  accordance  with  the  applicable
requirements of Section 711.

      The  Trustee  may  resign at any time with  respect to the Notes of one or
more series by giving written  notice thereof to the Company.  If the instrument
of acceptance by a successor Trustee required by Section 711 shall not have been
delivered  to the  Trustee  within 30 days  after the  giving of such  notice of
resignation,   the  resigning  Trustee  may  petition  any  court  of  competent
jurisdiction  for the  appointment  of a successor  Trustee  with respect to the
Notes of such series.

      The  Trustee  may be removed at any time with  respect to the Notes of any
series  by  Act  of  the  Holders  of a  majority  in  principal  amount  of the
Outstanding Notes of such series, delivered to the Trustee and to the Company.

      If at any time:

      (1) the  Trustee  shall  fail to comply  with  Section  708 after  written
   request  therefor  by the  Company  or by any Holder who has been a bona fide
   Holder of a Note for at least six months, or

      (2) the Trustee  shall cease to be  eligible  under  Section 709 and shall
   fail to resign after written  request  therefor by the Company or by any such
   Holder, or

      (3) the Trustee  shall  become  incapable of acting or shall be adjudged a
   bankrupt or insolvent  or a receiver of the Trustee or of its property  shall
   be  appointed  or any  public  officer  shall  take  charge or control of the
   Trustee or of its  property  or affairs  for the  purpose of  rehabilitation,
   conservation or liquidation,

then,  in any such case,  (A) the Company by a Board  Resolution  may remove the
Trustee with respect to all Notes, or (B) subject to Section 614, any Holder who
has been a bona fide  Holder of a Note for at least six months may, on behalf of
himself  and all others  similarly  
<PAGE>
situated,  petition any court of competent  jurisdiction  for the removal of the
Trustee with respect to all Notes and the appointment of a successor  Trustee or
Trustees.

      If the Trustee shall resign,  be removed or become incapable of acting, or
if a vacancy shall occur in the office of Trustee for any cause, with respect to
the Notes of one or more  series,  the  Company,  by a Board  Resolution,  shall
promptly  appoint a successor  Trustee or Trustees  with respect to the Notes of
that or those series (it being understood that any such successor Trustee may be
appointed  with  respect  to the Notes of one or more or all of such  series and
that at any time there  shall be only one Trustee  with  respect to the Notes of
any  particular  series) and shall comply with the  applicable  requirements  of
Section  711.  If,   within  one  year  after  such   resignation,   removal  or
incapability,  or the  occurrence  of such  vacancy,  a successor  Trustee  with
respect to the Notes of any series shall be appointed by Act of the Holders of a
majority in principal  amount of the Outstanding  Notes of such series delivered
to the Company and the  retiring  Trustee,  the  successor  Trustee so appointed
shall,  forthwith upon its acceptance of such appointment in accordance with the
applicable  requirements  of Section  711,  become the  successor  Trustee  with
respect to the Notes of such series and to that extent  supersede  the successor
Trustee  appointed by the Company.  If no successor  Trustee with respect to the
Notes of any series  shall have been so  appointed by the Company or the Holders
and accepted  appointment in the manner  required by Section 711, any Holder who
has been a bona fide  Holder of a Note of such  series  for at least six  months
may, on behalf of himself and all others similarly situated,  petition any court
of  competent  jurisdiction  for the  appointment  of a successor  Trustee  with
respect to the Notes of such series.

      The Company shall give notice of each  resignation and each removal of the
Trustee  with  respect  to the Notes of any  series  and each  appointment  of a
successor  Trustee  with  respect to the Notes of any  series to all  Holders of
Notes of such series in the manner  provided in Section  106.  Each notice shall
include  the name of the  successor  Trustee  with  respect to the Notes of such
series and the address of its Corporate Trust Office.


SECTION 711.  Acceptance of Appointment by Successor.

      In case of the appointment  hereunder of a successor  Trustee with respect
to  all  Notes,  every  such  successor  Trustee  so  appointed  shall  execute,
acknowledge and deliver to the Company and to the retiring Trustee an instrument
accepting  such  appointment,  and thereupon the  resignation  or removal of the
retiring Trustee shall become effective and such successor Trustee,  without any
further  act,  deed or  conveyance,  shall  become  vested  with all the rights,
powers,  trusts and duties of the retiring Trustee,  including rights, title and
interest in the Senior  Note First  Mortgage  Bonds;  but, on the request of the
Company or the successor  Trustee,  such retiring Trustee shall, upon payment of
its charges,  execute and deliver an instrument  transferring  to such successor
Trustee all the rights, powers and trusts of the retiring Trustee and shall duly
assign,  transfer and deliver to such  successor  Trustee all property and money
held by such retiring Trustee hereunder.

      In case of the appointment  hereunder of a successor  Trustee with respect
to the Notes of one or more (but not all)  series,  the  Company,  the  retiring
Trustee  and each  successor  Trustee  with  respect to the Notes of one or more
series shall execute and deliver an indenture  supplemental  hereto wherein each
successor Trustee shall accept such appointment and which (1) shall contain such
provisions as shall be necessary or desirable to transfer and confirm to,
<PAGE>
and to vest in, each successor Trustee all the rights, powers, trusts and duties
of the  retiring  Trustee  with  respect to the Notes of that or those series to
which the  appointment of such successor  Trustee  relates,  (2) if the retiring
Trustee is not retiring with respect to all Notes, shall contain such provisions
as shall be deemed  necessary  or  desirable  to  confirm  that all the  rights,
powers,  trusts and duties of the retiring  Trustee with respect to the Notes of
that or those  series as to which the  retiring  Trustee is not  retiring  shall
continue to be vested in the  retiring  Trustee,  and (3) shall add to or change
any of the  provisions of this Indenture as shall be necessary to provide for or
facilitate the  administration of the trusts hereunder by more than one Trustee,
it being understood that nothing herein or in such supplemental  indenture shall
constitute  such  Trustees  co-trustees  of the same  trust  and that  each such
Trustee shall be trustee of a trust or trusts hereunder  separate and apart from
any trust or trusts hereunder  administered by any other such Trustee;  and upon
the execution and delivery of such  supplemental  indenture the  resignation  or
removal of the retiring  Trustee shall become  effective to the extent  provided
therein  and each such  successor  Trustee,  without any  further  act,  deed or
conveyance,  shall become vested with all the rights,  powers, trusts and duties
of the  retiring  Trustee  with  respect to the Notes of that or those series to
which the appointment of such successor Trustee relates;  but, on request of the
Company or any  successor  Trustee,  such  retiring  Trustee  shall duly assign,
transfer  and deliver to such  successor  Trustee all property and money held by
such  retiring  Trustee  hereunder  with  respect  to the Notes of that or those
series to which the appointment of such successor Trustee relates.

      Upon request of any such successor Trustee,  the Company shall execute any
and all  instruments  for more fully and certainly  vesting in and confirming to
such  successor  Trustee all such rights,  powers and trusts  referred to in the
first or second preceding paragraph, as the case may be.

      No successor  Trustee shall accept its  appointment  unless at the time of
such  acceptance  such  successor  Trustee shall be qualified and eligible under
this Article.


SECTION 712.  Merger, Conversion, Consolidation or Succession to Business.

      Any corporation  into which the Trustee may be merged or converted or with
which it may be  consolidated,  or any  corporation  resulting  from any merger,
conversion  or  consolidation  to which  the  Trustee  shall be a party,  or any
corporation  succeeding to all or substantially all the corporate trust business
of the Trustee,  shall be the successor of the Trustee hereunder,  provided such
corporation  shall be  otherwise  qualified  and  eligible  under this  Article,
without the  execution  or filing of any paper or any further act on the part of
any of the parties hereto. In case any Notes shall have been authenticated,  but
not  delivered,  by the  Trustee  then  in  office,  any  successor  by  merger,
conversion  or  consolidation  to such  authenticating  Trustee  may adopt  such
authentication and deliver the Notes so authenticated with the same effect as if
such successor Trustee had itself authenticated such Notes.
<PAGE>
SECTION 713.  Preferential Collection of Claims Against Company.

      If and when the  Trustee  shall be or become a creditor of the Company (or
any  other  obligor  upon  the  Notes),  the  Trustee  shall be  subject  to the
provisions of the Trust Indenture Act regarding the collection of claims against
the Company (or any such other obligor).


SECTION 714.  Appointment of Authenticating Agent.

      The Trustee may appoint an Authenticating  Agent or Agents with respect to
one or more series of Notes which  shall be  authorized  to act on behalf of the
Trustee to authenticate Notes of such series issued upon exchange,  registration
of transfer or partial  redemption thereof or pursuant to Section 306, and Notes
so  authenticated  shall be entitled to the benefits of this Indenture and shall
be valid and  obligatory  for all  purposes as if  authenticated  by the Trustee
hereunder.  Wherever  reference is made in this Indenture to the  authentication
and  delivery  of  Notes  by  the  Trustee  or  the  Trustee's   certificate  of
authentication,  such reference  shall be deemed to include  authentication  and
delivery on behalf of the Trustee by an  Authenticating  Agent and a certificate
of authentication  executed on behalf of the Trustee by an Authenticating Agent.
Each  Authenticating  Agent shall be  acceptable to the Company and shall at all
times be a corporation organized and doing business under the laws of the United
States of America,  any State  thereof or the District of  Columbia,  authorized
under such laws to act as  Authenticating  Agent,  having a combined capital and
surplus of not less than  $50,000,000  and subject to supervision or examination
by Federal or State authority. If such Authenticating Agent publishes reports of
condition  at least  annually,  pursuant to law or to the  requirements  of said
supervising or examining  authority,  then for the purposes of this Section, the
combined capital and surplus of such Authenticating  Agent shall be deemed to be
its  combined  capital  and  surplus as set forth in its most  recent  report of
condition so published. If at any time an Authenticating Agent shall cease to be
eligible in accordance with the provisions of this Section,  such Authenticating
Agent shall resign  immediately  in the manner and with the effect  specified in
this Section.

      Any  corporation  into  which an  Authenticating  Agent  may be  merged or
converted or with which it may be  consolidated,  or any  corporation  resulting
from any merger,  conversion or consolidation to which such Authenticating Agent
shall be a party,  or any  corporation  succeeding  to the  corporate  agency or
corporate  trust business of an  Authenticating  Agent,  shall continue to be an
Authenticating  Agent,  provided such  corporation  shall be otherwise  eligible
under this Section,  without the execution or filing of any paper or any further
act on the part of the Trustee or the Authenticating Agent.

      An  Authenticating  Agent may resign at any time by giving  written notice
thereof to the Trustee and to the Company. The Trustee may at any time terminate
the agency of an  Authenticating  Agent by giving written notice thereof to such
Authenticating  Agent  and to the  Company.  Upon  receiving  such a  notice  of
resignation  or  upon  such  a  termination,   or  in  case  at  any  time  such
Authenticating  Agent  shall  cease  to  be  eligible  in  accordance  with  the
provisions of this Section,  the Trustee may appoint a successor  Authenticating
Agent  which  shall be  acceptable  to the Company and shall give notice of such
appointment in the manner provided in Section 106 to all Holders of Notes of the
series with respect to which such Authenticating Agent will serve. Any successor
Authenticating  Agent upon acceptance of its 
<PAGE>
appointment hereunder shall become vested with all the rights, powers and duties
of its  predecessor  hereunder,  with like effect as if  originally  named as an
Authenticating  Agent.  No  successor  Authenticating  Agent shall be  appointed
unless eligible under the provisions of this Section.

      The Company agrees to pay to each  Authenticating  Agent from time to time
reasonable compensation for its services under this Section.

      If an  appointment  with respect to one or more series is made pursuant to
this Section, the Notes of such series may have endorsed thereon, in addition to
the Trustee's  certificate  of  authentication,  an  alternative  certificate of
authentication in the following form:

      This is one of the Notes of the series  designated  therein referred to in
the within-mentioned Indenture.


                                                           THE BANK OF NEW YORK,
                                                                      As Trustee



                                       By......................................,
                                                         As Authenticating Agent



                                       By.......................................
                                                              Authorized Officer
                                       49
<PAGE>
                                  ARTICLE EIGHT

                HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY


SECTION 801.  Company to Furnish Trustee Names and Addresses of Holders.

      The Company will furnish or cause to be furnished to the Trustee

      (1) fifteen days after each Regular  Record Date, a list,  in such form as
   the Trustee may reasonably require, of the names and addresses of the Holders
   of Notes of each series as of such Regular Record Date, and

      (2) at such other times as the  Trustee may request in writing,  within 30
   days after the receipt by the Company of any such request,  a list of similar
   form and  content  as of a date not more than 15 days  prior to the time such
   list is furnished;

excluding from any such list names and addresses  received by the Trustee in its
capacity as Note Registrar.


SECTION 802.  Preservation of Information; Communications to Holders.

      The  Trustee  shall  preserve,  in as  current  a  form  as is  reasonably
practicable,  the names and  addresses  of Holders  contained in the most recent
list  furnished  to the  Trustee as  provided  in Section  801 and the names and
addresses of Holders  received by the Trustee in its capacity as Note Registrar.
The Trustee may destroy any list furnished to it as provided in Section 801 upon
receipt of a new list so furnished.

      The rights of Holders to  communicate  with other  Holders with respect to
their rights  under this  Indenture  or under the Notes,  and the  corresponding
rights  and  privileges  of the  Trustee,  shall  be as  provided  by the  Trust
Indenture Act.

      Every Holder of Notes, by receiving and holding the same,  agrees with the
Company and the Trustee  that  neither the Company nor the Trustee nor any agent
of either of them  shall be held  accountable  by  reason of any  disclosure  of
information  as to names and  addresses  of Holders  made  pursuant to the Trust
Indenture Act.


SECTION 803.  Reports by Trustee.

      The Trustee shall transmit to Holders such reports  concerning the Trustee
and its actions  under this  Indenture as may be required  pursuant to the Trust
Indenture  Act at the times and in the  manner  provided  pursuant  thereto.  If
required by Section 313(a) of the Trust Indenture Act, the Trustee shall, within
sixty days after each May 15  following  the date of this  Indenture  deliver to
Holders  a brief  report,  dated  as of such  May 15,  which  complies  with the
provisions of such Section 313(a).
<PAGE>
      A copy of each such  report  shall,  at the time of such  transmission  to
Holders,  be filed by the Trustee with each stock  exchange upon which any Notes
are listed, with the Commission and with the Company.  The Company will promptly
notify the Trustee when any Notes are listed on any stock exchange.


SECTION 804.  Reports by Company.

      The Company shall file with the Trustee and the  Commission,  and transmit
to Holders,  such information,  documents and other reports,  and such summaries
thereof, as may be required pursuant to the Trust Indenture Act at the times and
in the manner provided pursuant to such Act; provided that any such information,
documents  or reports  required  to be filed  with the  Commission  pursuant  to
Section 13 or 15(d) of the Exchange  Act shall be filed with the Trustee  within
15 days after the same is so required to be filed with the Commission.


                                  ARTICLE NINE

              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE


SECTION 901.  Company May Consolidate, Etc., Only on Certain Terms.

      The Company shall 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 the Company shall 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:

      (1) in case the  Company  shall  consolidate  with or merge  into  another
   Person or convey,  transfer or lease its properties and assets  substantially
   as an entirety to any Person, the Person formed by such consolidation or into
   which the Company is merged or the Person  which  acquires by  conveyance  or
   transfer,  or  which  leases,  the  properties  and  assets  of  the  Company
   substantially   as  an  entirety   shall  be  a   corporation,   partnership,
   unincorporated organization or trust, shall be organized and validly existing
   under the laws of the  United  States of  America,  any State  thereof or the
   District  of  Columbia  and  (a)  shall  expressly  assume,  by an  indenture
   supplemental  hereto,   executed  and  delivered  to  the  Trustee,  in  form
   satisfactory to the Trustee, the due and punctual payment of the principal of
   and any  premium  and  interest  on all the  Notes  and  the  performance  or
   observance of every  covenant of this Indenture on the part of the Company to
   be  performed  or observed  (b) if such  consolidation,  merger,  conveyance,
   transfer,  or lease occurs prior to the Release Date, shall expressly assume,
   by an indenture supplemental to the First Mortgage, executed and delivered to
   the Trustee and the Mortgage Trustee, in form satisfactory to the Trustee and
   the Mortgage  Trustee,  the due and punctual  payment of the principal of and
   any premium and interest on all of the Senior Note First  Mortgage  Bonds and
   the  performance  of every  covenant of the First Mortgage on the part of the
   Company to be performed or observed.  For purposes of this Article Nine,  the
   phrase "assets  substantially  as an entirety"  shall mean 50% or more of the
   total assets of the Company as shown on the consolidated balance sheet of the
   Company as of the end of the calendar year immediately   
<PAGE>

   preceding  the day  of  the  year in  which  such  determination  is made and
   nothing in this Indenture shall prevent or hinder the Company from conveying,
   transferring  or leasing  during any calendar year (in one  transaction  or a
   series of  transactions)  less than 50% of the amount of its total  assets as
   shown on the  consolidated  balance sheet of the Company as of the end of the
   immediately preceding calendar year;

      (2) immediately  after giving effect to such  transaction and treating any
   indebtedness  which becomes an obligation of the Company or any Subsidiary as
   a result of such  transaction  as having been incurred by the Company or such
   Subsidiary at the time of such 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 happened and be continuing;

      (3)  if,  as a  result  of  any  such  consolidation  or  merger  or  such
   conveyance,  transfer or lease,  properties  or assets of the  Company  would
   become  subject to a  mortgage,  pledge,  lien,  security  interest  or other
   encumbrance  which would not be permitted by this  Indenture,  the Company or
   such successor  Person, as the case may be, shall take such steps as shall be
   necessary  effectively to secure the Notes equally and ratably with (or prior
   to) all indebtedness secured thereby; and

      (4) the Company has delivered to the Trustee an Officers'  Certificate and
   an  Opinion  of  Counsel,  each  stating  that  such  consolidation,  merger,
   conveyance, transfer or lease and, if a supplemental indenture is required in
   connection with such  transaction,  such  supplemental  indenture comply with
   this Article and that all conditions  precedent  herein provided for relating
   to such transaction have been complied with.


SECTION 902.  Successor Substituted.

      Upon any consolidation of the Company with, or merger of the Company into,
any other  Person or any  conveyance,  transfer or lease of the  properties  and
assets of the Company  substantially  as an entirety in accordance  with Section
901, the successor Person formed by such consolidation or into which the Company
is merged or to which such  conveyance,  transfer or lease is made shall succeed
to, and be  substituted  for,  and may  exercise  every  right and power of, the
Company under this Indenture  with the same effect as if such  successor  Person
had been named as the Company herein,  and  thereafter,  except in the case of a
lease, the predecessor Person shall be relieved of all obligations and covenants
under this Indenture and the Notes.
<PAGE>
                                   ARTICLE TEN

                             SUPPLEMENTAL INDENTURES


SECTION 1001.  Supplemental Indentures Without Consent of Holders.

      Without the consent of any Holders,  the  Company,  when  authorized  by a
Board Resolution,  and the Trustee, at any time and from time to time, may enter
into one or more indentures  supplemental  hereto,  in form  satisfactory to the
Trustee, for any of the following purposes:

      (1) to evidence the  succession  of another  Person to the Company and the
   assumption by any such  successor of the covenants of the Company  herein and
   in the Notes; or

      (2) to add to the  covenants of the Company for the benefit of the Holders
   of all or any  series  of  Notes  (and  if such  covenants  are to be for the
   benefit of less than all series of Notes,  stating  that such  covenants  are
   expressly  being  included  solely  for the  benefit  of such  series)  or to
   surrender any right or power herein conferred upon the Company; or

      (3) to add any additional Events of Default for the benefit of the Holders
   of all or any series of Notes (and if such  additional  Events of Default are
   to be for the  benefit  of less than all series of Notes,  stating  that such
   additional  Events of Default are  expressly  being  included  solely for the
   benefit of such series); or

      (4) to add to or change any of the  provisions  of this  Indenture to such
   extent as shall be necessary to permit or facilitate the issuance of Notes in
   bearer form,  registrable  or not  registrable  as to principal,  and with or
   without interest coupons, or to permit or facilitate the issuance of Notes in
   uncertificated form; or

      (5) to add to, change or eliminate any of the provisions of this Indenture
   in respect of one or more series of Notes,  provided that any such  addition,
   change or  elimination  (A) shall neither (i) apply to any Note of any series
   created prior to the execution of such supplemental indenture and entitled to
   the benefit of such provision nor (ii) modify the rights of the Holder of any
   such Note with respect to such  provision or (B) shall become  effective only
   when there is no such Note Outstanding; or

      (6) to secure the Notes; or

      (7) to establish  the form or terms of Notes of any series as permitted by
   Sections 201 and 301; or

      (8) to evidence and provide for the acceptance of appointment hereunder by
   a successor  Trustee  with  respect to the Notes of one or more series and to
   add to or  change  any of the  provisions  of  this  Indenture  as  shall  be
   necessary  to provide  for or  facilitate  the  administration  of the trusts
   hereunder by more than one Trustee,  pursuant to the  requirements of Section
   711; or
<PAGE>
      (9) to cure any ambiguity,  to correct or supplement any provision  herein
   which may be defective or inconsistent with any other provision herein, or to
   make any other provisions with respect to matters or questions  arising under
   this  Indenture,  provided that such action pursuant to this Clause (9) shall
   not  adversely  affect the interests of the Holders of Notes of any series in
   any material respect.


SECTION 1002.  Supplemental Indentures With Consent of Holders.

      With the consent of the Holders of a majority in  principal  amount of the
Outstanding Notes of each series affected by such supplemental indenture, by Act
of said  Holders  delivered to the Company and the  Trustee,  the Company,  when
authorized by a Board Resolution, and the Trustee may enter into an indenture or
indentures  supplemental  hereto for the purpose of adding any  provisions to or
changing in any manner or eliminating any of the provisions of this Indenture or
of  modifying  in any manner the rights of the  Holders of Notes of such  series
under this Indenture;  provided,  however,  that no such supplemental  indenture
shall,  without  the  consent of the Holder of each  Outstanding  Note  affected
thereby,

      (1) change the Stated  Maturity of the principal of, or any  instalment of
   principal of or interest on, any Note, or reduce the principal amount thereof
   or the rate of interest  thereon or any premium  payable upon the  redemption
   thereof,  or reduce the amount of the principal of an Original Issue Discount
   Note or any other Note which would be due and payable upon a  declaration  of
   acceleration of the Maturity  thereof  pursuant to Section 602, or change any
   Place of Payment  where,  or the coin or currency  in which,  any Note or any
   premium or interest thereon is payable,  or impair the interest  hereunder of
   the Trustee in the Senior Note First Mortgage  Bonds,  or impair the right to
   institute suit for the enforcement of any such payment on or after the Stated
   Maturity  thereof (or, in the case of redemption,  on or after the Redemption
   Date),  or prior to the Release  Date,  impair the interest  hereunder of the
   Trustee in the Senior Note First Mortgage Bonds,  reduce the principal amount
   of any series of Senior Note First  Mortgage Bonds to an amount less than the
   principal  amount  of the  related  series  of  Notes or  alter  the  payment
   provisions of such Senior Note First  Mortgage  Bonds in a manner  adverse to
   the Holders of the Notes, or

      (2) reduce the percentage in principal amount of the Outstanding  Notes of
   any  series,   the  consent  of  whose  Holders  is  required  for  any  such
   supplemental  indenture,  or the consent of whose Holders is required for any
   waiver (of  compliance  with certain  provisions of this Indenture or certain
   defaults hereunder and their consequences) provided for in this Indenture, or

      (3) modify any of the  provisions of this Section,  Section 613 or Section
   1108, except to increase any such percentage or to provide that certain other
   provisions of this Indenture cannot be modified or waived without the consent
   of the Holder of each Outstanding Note affected thereby;  provided,  however,
   that this  clause  shall not be deemed to require  the  consent of any Holder
   with respect to changes in the  references to "the  Trustee" and  concomitant
   changes in this Section and Section 1108, or the deletion of this proviso, in
   accordance with the requirements of Sections 711 and 1001(8).

A  supplemental  indenture  which  changes or  eliminates  any covenant or other
provision of this  Indenture  which has expressly  been included  solely for the
benefit of one or more 
<PAGE>
particular series of Notes, or which modifies the rights of the Holders of Notes
of such series with respect to such covenant or other provision, shall be deemed
not to affect the rights  under this  Indenture  of the  Holders of Notes of any
other series.

      It shall not be  necessary  for any Act of Holders  under this  Section to
approve the particular form of any proposed supplemental indenture, but it shall
be sufficient if such Act shall approve the substance thereof.


SECTION 1003.  Execution of Supplemental Indentures.

      In  executing,   or  accepting  the  additional  trusts  created  by,  any
supplemental indenture permitted by this Article or the modifications thereby of
the trusts created by this Indenture,  the Trustee shall be entitled to receive,
and  (subject  to Section  701) shall be fully  protected  in relying  upon,  an
Opinion of Counsel stating that the execution of such supplemental  indenture is
authorized  or  permitted by this  Indenture.  The Trustee may, but shall not be
obligated  to,  enter into any such  supplemental  indenture  which  affects the
Trustee's own rights, duties or immunities under this Indenture or otherwise.


SECTION 1004.  Effect of Supplemental Indentures.

      Upon the execution of any supplemental  indenture under this Article, this
Indenture  shall be  modified in  accordance  therewith,  and such  supplemental
indenture shall form a part of this Indenture for all purposes; and every Holder
of Notes theretofore or thereafter  authenticated and delivered  hereunder shall
be bound thereby.


SECTION 1005.  Conformity with Trust Indenture Act.

      Every  supplemental  indenture  executed  pursuant to this  Article  shall
conform to the requirements of the Trust Indenture Act.


SECTION 1006.  Reference in Notes to Supplemental Indentures.

      Notes of any series authenticated and delivered after the execution of any
supplemental  indenture  pursuant to this  Article may, and shall if required by
the  Trustee,  bear a notation in form  approved by the Trustee as to any matter
provided for in such supplemental  indenture. If the Company shall so determine,
new Notes of any series so modified as to conform, in the opinion of the Trustee
and the Company, to any such supplemental indenture may be prepared and executed
by the Company and  authenticated  and  delivered by the Trustee in exchange for
Outstanding Notes of such series.
<PAGE>
                                 ARTICLE ELEVEN

                                    COVENANTS


SECTION 1101.  Payment of Principal, Premium and Interest.

      The Company  covenants  and agrees for the benefit of each series of Notes
that it will  duly and  punctually  pay the  principal  of and any  premium  and
interest on the Notes of that series in  accordance  with the terms of the Notes
and this Indenture.


SECTION 1102.  Maintenance of Office or Agency.

      The Company will maintain in each Place of Payment for any series of Notes
an office or agency where Notes of that series may be  presented or  surrendered
for payment,  where Notes of that series may be surrendered for  registration of
transfer  or  exchange  and where  notices and demands to or upon the Company in
respect  of the Notes of that  series  and this  Indenture  may be  served.  The
Company will give prompt written notice to the Trustee of the location,  and any
change in the  location,  of such  office or agency.  If at any time the Company
shall  fail to  maintain  any such  required  office or agency or shall  fail to
furnish the Trustee with the address thereof,  such  presentations,  surrenders,
notices and demands may be made or served at the  Corporate  Trust Office of the
Trustee, and the Company hereby appoints the Trustee as its agent to receive all
such presentations, surrenders, notices and demands.

      The Company may also from time to time designate one or more other offices
or  agencies  where  the  Notes  of one or  more  series  may  be  presented  or
surrendered  for any or all such purposes and may from time to time rescind such
designations; provided, however, that no such designation or rescission shall in
any manner relieve the Company of its obligation to maintain an office or agency
in each Place of Payment for Notes of any series for such purposes.  The Company
will give  prompt  written  notice to the  Trustee  of any such  designation  or
rescission and of any change in the location of any such other office or agency.


SECTION 1103.  Money for Notes Payments to Be Held in Trust.

      If the Company  shall at any time act as its own Paying Agent with respect
to any series of Notes,  it will, on or before each due date of the principal of
or any  premium or interest on any of the Notes of that  series,  segregate  and
hold in trust for the benefit of the Persons  entitled  thereto a sum sufficient
to pay the  principal  and any premium and  interest so becoming  due until such
sums shall be paid to such Persons or otherwise  disposed of as herein  provided
and will promptly notify the Trustee of its action or failure so to act.

      Whenever the Company  shall have one or more Paying  Agents for any series
of Notes, it will,  prior to each due date of the principal of or any premium or
interest  on any  Notes  of  that  series,  deposit  with a  Paying  Agent a sum
sufficient  to pay such  amount,  such sum to be held as  provided  by the Trust
Indenture  Act,  and (unless  such Paying Agent is the Trustee) the Company will
promptly notify the Trustee of its action or failure so to act.
<PAGE>
      The  Company  will cause each  Paying  Agent for any series of Notes other
than the Trustee to execute and  deliver to the Trustee an  instrument  in which
such Paying Agent shall agree with the  Trustee,  subject to the  provisions  of
this Section,  that such Paying Agent will (1) comply with the provisions of the
Trust  Indenture  Act  applicable  to it as a Paying  Agent and (2)  during  the
continuance  of any default by the Company (or any other  obligor upon the Notes
of that  series)  in the  making of any  payment in respect of the Notes of that
series,  upon the written  request of the Trustee,  forthwith pay to the Trustee
all sums held in trust by such Paying  Agent for payment in respect of the Notes
of that series.

      The Company may at any time, for the purpose of obtaining the satisfaction
and  discharge of this  Indenture or for any other  purpose,  pay, or by Company
Order  direct any Paying  Agent to pay, to the Trustee all sums held in trust by
the Company or such Paying  Agent,  such sums to be held by the Trustee upon the
same  trusts as those  upon  which  such sums were held by the  Company  or such
Paying Agent;  and,  upon such payment by any Paying Agent to the Trustee,  such
Paying Agent shall be released from all further  liability  with respect to such
money.

      Any money  deposited with the Trustee or any Paying Agent, or then held by
the  Company,  in trust for the  payment of the  principal  of or any premium or
interest on any Note of any series and  remaining  unclaimed for two years after
such principal,  premium or interest has become due and payable shall be paid to
the  Company  on  Company  Request,  or (if then held by the  Company)  shall be
discharged from such trust; and the Holder of such Note shall thereafter,  as an
unsecured  general creditor,  look only to the Company for payment thereof,  and
all  liability  of the Trustee or such Paying  Agent with  respect to such trust
money,  and all  liability of the Company as trustee  thereof,  shall  thereupon
cease;  provided,  however,  that the Trustee or such Paying Agent, before being
required to make any such repayment,  may at the expense of the Company cause to
be published once, in a newspaper published in the English language, customarily
published  on each  Business  Day and of general  circulation  in the Borough of
Manhattan,  The City of New York,  New York,  notice  that  such  money  remains
unclaimed and that, after a date specified therein, which shall not be less than
30 days from the date of such  publication,  any unclaimed balance of such money
then remaining will be repaid to the Company.


SECTION 1104.  Statement by Officers as to Default.

      The Company will deliver to the Trustee,  within 120 days after the end of
each fiscal year of the  Company  ending  after the date  hereof,  an  Officers'
Certificate, stating whether or not to the best knowledge of the signers thereof
the Company is in default in the performance and observance of any of the terms,
provisions  and conditions of this  Indenture  (without  regard to any period of
grace or requirement of notice provided  hereunder) and, if the Company shall be
in default,  specifying  all such defaults and the nature and status  thereof of
which they may have knowledge.

SECTION 1105.  Recording, Filing, etc.; Opinions of Counsel.

      The Company will cause this Indenture, any indentures supplemental to this
Indenture,  and any financing or continuation statements to be promptly recorded
and filed and rerecorded and refiled in such a manner and in such places, as may
be required by law in 
<PAGE>
order fully to preserve, protect and perfect the security of the Holders and all
rights of the Trustee, and shall deliver to the Trustee:

      (a) promptly after the execution and delivery of this Indenture and of any
indenture  supplemental  to this  Indenture  but prior to the Release  Date,  an
Opinion of Counsel  either  stating that,  in the opinion of such counsel,  this
Indenture or such  supplemental  indenture  and any  financing  or  continuation
statements have been properly  recorded and filed so as to make effective and to
perfect the  security  interest  of the  Trustee  intended to be created by this
Indenture  for the benefit of the  Holders  from time to time in the Senior Note
First Mortgage Bonds, and reciting the details of such action,  or stating that,
in the opinion of such  counsel,  no such action is necessary to perfect or make
such  security  interest  effective  and  stating  what,  if any,  action of the
foregoing  character may reasonably be expected to become necessary prior to the
next succeeding  ______ 1 to maintain,  perfect and make such security  interest
effective; and

      (b) on or before _____ 1 of each year,  beginning  in 199__,  and prior to
the Release  Date, an Opinion of Counsel  either  stating that in the opinion of
such  counsel  such  action has been  taken,  since the date of the most  recent
Opinion of  Counsel  furnished  pursuant  to this  Section  1105(b) or the first
Opinion of Counsel  furnished  pursuant to Section 1105(a),  with respect to the
recording, filing, rerecording, or refiling of this Indenture, each supplemental
indenture  and any  financing  or  continuation  statements,  as is necessary to
maintain and perfect the security interest of the Trustee intended to be created
by this  Indenture for the benefit of the Holders from time to time of the Notes
in the Senior  Note First  Mortgage  Bonds,  and  reciting  the  details of such
action,  or  stating  that in the  opinion  of such  counsel  no such  action is
necessary to maintain and perfect such  security  interest and stating  what, if
any,  action of the  foregoing  character  may  reasonably be expected to become
necessary  prior to the next  succeeding  _____ 1 to maintain,  perfect and make
such security interest effective.


SECTION 1106.  Existence.

      Subject  to  Article  Nine,  the  Company  will do or cause to be done all
things  necessary to preserve  and keep in full force and effect its  existence,
rights (charter and statutory) and corporate franchises; provided, however, that
the Company shall not be required to preserve any such right or franchise if the
Board of Directors  shall determine that the  preservation  thereof is no longer
desirable  in the  conduct  of the  business  of the  Company  and that the loss
thereof is not disadvantageous in any material respect to the Holders.
<PAGE>
SECTION 1107.  Maintenance of Properties.

      Subject to Article  Nine,  the Company will cause all  properties  used or
useful in the conduct of its  business or the business of any  Subsidiary  to be
maintained  and kept in good  condition,  repair and working  order and supplied
with all necessary  equipment  and will cause to be made all necessary  repairs,
renewals,  replacements,  betterments and  improvements  thereof,  all as in the
judgment of the  Company may be  necessary  so that the  business  carried on in
connection therewith may be properly and advantageously  conducted at all times;
provided,  however,  that nothing in this Section shall prevent the Company from
discontinuing  the operation or  maintenance  of any of such  properties if such
discontinuance  is, in the judgment of the Company,  desirable in the conduct of
its business or the business of any  Subsidiary and not  disadvantageous  in any
material respect to the Holders.


SECTION 1108.  Payment of Taxes and Other Claims.

      The  Company  will pay or  discharge  or  cause to be paid or  discharged,
before  the  same  shall  become  delinquent,  (1) all  taxes,  assessments  and
governmental  charges  levied or imposed upon the Company or any  Subsidiary  or
upon the income,  profits or property of the Company or any Subsidiary,  and (2)
all lawful claims for labor,  materials and supplies which, if unpaid,  might by
law become a lien upon the property of the Company or any Subsidiary;  provided,
however,  that the Company shall not be required to pay or discharge or cause to
be paid or discharged  any such tax,  assessment,  charge or claim whose amount,
applicability  or  validity  is being  contested  in good  faith by  appropriate
proceedings.


SECTION 1109.  Waiver of Certain Covenants.

      Except as otherwise  specified as contemplated by Section 301 for Notes of
such series,  the Company may, with respect to the Notes of any series,  omit in
any  particular  instance to comply with any term,  provision or  condition  set
forth in any covenant provided  pursuant to Section 301(20),  1001(2) or 1001(7)
for the benefit of the Holders of such series or in any of Sections 1107 through
1108 if  before  the time for such  compliance  the  Holders  of a  majority  in
principal  amount of the Outstanding  Notes of such series shall, by Act of such
Holders,  either  waive such  compliance  in such  instance or  generally  waive
compliance  with such term,  provision  or  condition,  but no such waiver shall
extend to or affect such term,  provision or  condition  except to the extent so
expressly waived, and, until such waiver shall become effective, the obligations
of the  Company  and the  duties of the  Trustee  in  respect  of any such term,
provision or condition shall remain in full force and effect.


SECTION 1110.  Calculation of Original Issue Discount.

   The Company shall file with the Trustee  promptly at the end of each calendar
year  a  written  notice  specifying  the  amount  of  original  issue  discount
(including daily rates and accrual  periods) accrued on Outstanding  Notes as of
the end of such year.
<PAGE>
                                 ARTICLE TWELVE

                               REDEMPTION OF NOTES


SECTION 1201.  Applicability of Article.

      Notes of any series which are  redeemable  before  their  Stated  Maturity
shall be  redeemable  in  accordance  with their terms and (except as  otherwise
specified as contemplated by Section 301 for such Notes) in accordance with this
Article.


SECTION 1202.  Election to Redeem; Notice to Trustee.

      The  election of the Company to redeem any Notes shall be  evidenced  by a
Board  Resolution or in another manner  specified as contemplated by Section 301
for such Notes.  In case of any  redemption at the election of the Company,  the
Company  shall,  at least  60 days  prior to the  Redemption  Date  fixed by the
Company (unless a shorter notice shall be  satisfactory to the Trustee),  notify
the Trustee of such  Redemption  Date, of the principal  amount of Notes of such
series  to be  redeemed  and,  if  applicable,  of the  tenor of the Notes to be
redeemed.  In the case of any redemption of Notes (a) prior to the expiration of
any  restriction  on such  redemption  provided  in the  terms of such  Notes or
elsewhere in this Indenture, or (b) pursuant to an election of the Company which
is subject to a condition  specified  in the terms of such Notes or elsewhere in
this  Indenture,  the  Company  shall  furnish  the  Trustee  with an  Officers'
Certificate evidencing compliance with such restriction or condition.


SECTION 1203.  Selection by Trustee of Notes to Be Redeemed.

      If less than all the Notes of any series are to be  redeemed  (unless  all
the Notes of such series and of a  specified  tenor are to be redeemed or unless
such redemption affects only a single Note), the particular Notes to be redeemed
shall be  selected  not more than 60 days  prior to the  Redemption  Date by the
Trustee,  from the  Outstanding  Notes of such series not previously  called for
redemption,  by such method as the Trustee shall deem fair and  appropriate  and
which may provide for the selection for redemption of a portion of the principal
amount of any Note of such series,  provided that the unredeemed  portion of the
principal amount of any Note shall be in an authorized denomination (which shall
not be less than the minimum  authorized  denomination)  for such Note.  If less
than all the Notes of such  series and of a  specified  tenor are to be redeemed
(unless such redemption  affects only a single Note), the particular Notes to be
redeemed shall be selected not more than 60 days prior to the Redemption Date by
the Trustee,  from the Outstanding  Notes of such series and specified tenor not
previously called for redemption in accordance with the preceding sentence.

      The  Trustee  shall  promptly  notify the  Company in writing of the Notes
selected  for  redemption  as aforesaid  and, in case of any Notes  selected for
partial redemption as aforesaid, the principal amount thereof to be redeemed.
<PAGE>
      The  provisions  of the two  preceding  paragraphs  shall not  apply  with
respect to any redemption  affecting only a single Note, whether such Note is to
be redeemed in whole or in part. In the case of any such redemption in part, the
unredeemed portion of the principal amount of the Note shall be in an authorized
denomination (which shall not be less than the minimum authorized  denomination)
for such Note.

      For all purposes of this Indenture, unless the context otherwise requires,
all provisions  relating to the redemption of Notes shall relate, in the case of
any  Notes  redeemed  or to be  redeemed  only in part,  to the  portion  of the
principal amount of such Notes which has been or is to be redeemed.


SECTION 1204.  Notice of Redemption.

      Notice of redemption shall be given by first-class mail,  postage prepaid,
mailed not less than 30 nor more than 60 days prior to the  Redemption  Date, to
each  Holder  of Notes to be  redeemed,  at his  address  appearing  in the Note
Register.

      All  notices  of  redemption  shall  identify  the  Notes  to be  redeemed
(including CUSIP number) and shall state:

      (1) the Redemption Date,

      (2) the Redemption Price,

      (3) if  less  than  all  the  Outstanding  Notes  of any  series  and of a
   specified tenor consisting of more than a single Note are to be redeemed, the
   identification (and, in the case of partial redemption of any such Notes, the
   principal  amounts) of the particular  Notes to be redeemed and, if less than
   all the Outstanding  Notes of any series and of a specified tenor  consisting
   of a single Note are to be redeemed,  the principal  amount of the particular
   Note to be redeemed,

      (4) that on the Redemption  Date the Redemption  Price will become due and
   payable upon each such Note to be redeemed and, if applicable,  that interest
   thereon will cease to accrue on and after said date,

      (5) the place or places  where  each  such Note is to be  surrendered  for
   payment of the Redemption Price, and

      (6) that the redemption is for a sinking fund, if such is the case.

      Notice  of  redemption  of Notes to be  redeemed  at the  election  of the
Company  shall be given by the  Company  or, at the  Company's  request,  by the
Trustee in the name and at the expense of the Company and shall be irrevocable.
<PAGE>
SECTION 1205.  Deposit of Redemption Price.

      Prior to any  Redemption  Date, the Company shall deposit with the Trustee
or with a Paying  Agent (or, if the  Company is acting as its own Paying  Agent,
segregate  and hold in trust as  provided  in  Section  1103) an amount of money
sufficient to pay the Redemption  Price of, and (except if the  Redemption  Date
shall be an Interest  Payment Date) accrued interest on, all the Notes which are
to be redeemed on that date.


SECTION 1206.  Notes Payable on Redemption Date.

      Notice of redemption  having been given as  aforesaid,  the Notes so to be
redeemed shall, on the Redemption Date, become due and payable at the Redemption
Price therein specified,  and from and after such date (unless the Company shall
default in the payment of the Redemption Price and accrued  interest) such Notes
shall cease to bear interest.  Upon surrender of any such Note for redemption in
accordance  with said  notice,  such Note  shall be paid by the  Company  at the
Redemption  Price,  together  with  accrued  interest  to the  Redemption  Date;
provided,  however,  that, unless otherwise specified as contemplated by Section
301,  installments  of  interest  whose  Stated  Maturity  is on or prior to the
Redemption  Date will be payable to the  Holders of such  Notes,  or one or more
Predecessor  Notes,  registered as such at the close of business on the relevant
Record Dates according to their terms and the provisions of Section 307.

      If any Note  called  for  redemption  shall not be so paid upon  surrender
thereof for  redemption,  the principal and any premium shall,  until paid, bear
interest from the Redemption Date at the rate prescribed therefor in the Note.


SECTION 1207.  Notes Redeemed in Part.

      Any Note which is to be redeemed  only in part shall be  surrendered  at a
Place of Payment therefor (with, if the Company or the Trustee so requires,  due
endorsement by, or a written  instrument of transfer in form satisfactory to the
Company and the Trustee  duly  executed  by, the Holder  thereof or his attorney
duly  authorized  in writing),  and the Company shall  execute,  and the Trustee
shall  authenticate  and  deliver  to the  Holder of such Note  without  service
charge,  a new  Note or  Notes  of the same  series  and of like  tenor,  of any
authorized  denomination  as requested by such  Holder,  in aggregate  principal
amount equal to and in exchange for the  unredeemed  portion of the principal of
the Note so surrendered.
<PAGE>
                                ARTICLE THIRTEEN

                                  SINKING FUNDS


SECTION 1301.  Applicability of Article.

      The provisions of this Article shall be applicable to any sinking fund for
the  retirement  of  Notes  of any  series  except  as  otherwise  specified  as
contemplated by Section 301 for such Notes.

      The minimum  amount of any sinking fund payment  provided for by the terms
of any Notes is herein  referred to as a "mandatory  sinking fund payment",  and
any payment in excess of such minimum  amount  provided for by the terms of such
Notes is herein referred to as an "optional  sinking fund payment".  If provided
for by the terms of any Notes,  the cash amount of any sinking  fund payment may
be subject to reduction as provided in Section  1302.  Each sinking fund payment
shall be applied to the redemption of Notes as provided for by the terms of such
Notes.


SECTION 1302.  Satisfaction of Sinking Fund Payments with Notes.

      The Company (1) may deliver  Outstanding Notes of a series (other than any
previously  called  for  redemption)  and (2) may  apply as a credit  Notes of a
series which have been redeemed  either at the election of the Company  pursuant
to the terms of such Notes or through  the  application  of  permitted  optional
sinking  fund  payments  pursuant  to the terms of such  Notes,  in each case in
satisfaction  of all or any part of any sinking fund payment with respect to any
Notes of such series  required to be made pursuant to the terms of such Notes as
and to the extent  provided  for by the terms of such Notes;  provided  that the
Notes to be so credited have not been previously so credited. The Notes to be so
credited  shall be received  and credited for such purpose by the Trustee at the
Redemption  Price,  as specified in the Notes so to be redeemed,  for redemption
through  operation  of the  sinking  fund and the  amount of such  sinking  fund
payment shall be reduced accordingly.


SECTION 1303.  Redemption of Notes for Sinking Fund.

      Not less than 60 days  prior to each  sinking  fund  payment  date for any
Notes,  the  Company  will  deliver  to the  Trustee  an  Officers'  Certificate
specifying  the amount of the next  ensuing  sinking fund payment for such Notes
pursuant to the terms of such Notes, the portion thereof, if any, which is to be
satisfied  by payment of cash and the portion  thereof,  if any,  which is to be
satisfied by delivering and crediting Notes pursuant to Section 1302 and stating
the basis  for such  credit  and that such  Notes  have not been  previously  so
credited and will also deliver to the Trustee any Notes to be so delivered.  Not
less than 30 days prior to each such  sinking  fund  payment  date,  the Trustee
shall select the Notes to be redeemed upon such sinking fund payment date in the
manner  specified in Section 1203 and cause notice of the redemption  thereof to
be given in the name of and at the expense of the Company in the manner provided
in Section  1204.  Such notice  having been duly given,  the  redemption of such
Notes shall be made upon the terms and in the manner stated in Sections 1206 and
1207.
<PAGE>
                                ARTICLE FOURTEEN

                       DEFEASANCE AND COVENANT DEFEASANCE


SECTION 1401.  Company's Option to Effect Defeasance or Covenant Defeasance.

      The Company may elect,  at its option at any time, to have Section 1402 or
Section  1403  applied to any Notes or any series of Notes,  as the case may be,
designated  pursuant to Section 301 as being defeasible pursuant to such Section
1402 or 1403, in accordance with any applicable  requirements  provided pursuant
to Section 301 and upon  compliance  with the conditions set forth below in this
Article.  Any such  election  shall be  evidenced  by a Board  Resolution  or in
another manner specified as contemplated by Section 301 for such Notes.


SECTION 1402.  Defeasance and Discharge.

      Upon the  Company's  exercise of its option (if any) to have this  Section
applied  to any Notes or any series of Notes,  as the case may be,  the  Company
shall be deemed to have been  discharged  from its  obligations  with respect to
such Notes as provided in this Section on and after the date the  conditions set
forth in Section 1404 are satisfied (hereinafter called "Defeasance").  For this
purpose, such Defeasance means that the Company shall be deemed to have paid and
discharged  the  entire  indebtedness  represented  by  such  Notes  and to have
satisfied all its other  obligations under such Notes and this Indenture insofar
as such Notes are  concerned  (and the  Trustee,  at the expense of the Company,
shall  execute  proper  instruments  acknowledging  the  same),  subject  to the
following  which  shall  survive  until   otherwise   terminated  or  discharged
hereunder:  (1) the rights of Holders of such Notes to receive,  solely from the
trust  fund  described  in  Section  1404 and as more  fully  set  forth in such
Section, payments in respect of the principal of and any premium and interest on
such Notes when payments are due, (2) the Company's  obligations with respect to
such Notes under  Sections  304, 305, 306, 1102 and 1103 and with respect to the
Trustee under Section 707, (3) the rights, powers, trusts, duties and immunities
of the Trustee  hereunder and (4) this Article.  Subject to compliance with this
Article,  the  Company  may  exercise  its option (if any) to have this  Section
applied to any Notes  notwithstanding  the prior exercise of its option (if any)
to have Section 1403 applied to such Notes.
<PAGE>

SECTION 1403.  Covenant Defeasance.

      Upon the  Company's  exercise of its option (if any) to have this  Section
applied to any Notes or any series of Notes, as the case may be, (1) the Company
shall be released  from its  obligations  under  Section  901(3),  Sections 1107
through 1108, inclusive, and any covenants provided pursuant to Section 301(20),
1001(2),  1001(6) or 1001(7)  and 501(8) for the  benefit of the Holders of such
Notes and (2) the  occurrence  of any event  specified in Sections  601(4) (with
respect to any of Section 901(3), Sections 1107 through 1108, inclusive, and any
such  covenants  provided  pursuant  to  Section  301(20),  1001(2),  1001(6) or
1001(7))  and 601(8)  shall be deemed not to be or result in an Event of Default
with respect to such Notes as provided in this Section on and after the date the
conditions set forth in Section 1404 are satisfied (hereinafter called "Covenant
Defeasance").  For this  purpose,  such  Covenant  Defeasance  means that,  with
respect to such  Notes,  the  Company  may omit to comply with and shall have no
liability in respect of any term,  condition or limitation set forth in any such
specified  Section (to the extent so specified  in the case of Section  601(4)),
whether  directly or indirectly by reason of any reference  elsewhere  herein to
any such Section or by reason of any  reference in any such Section to any other
provision  herein or in any other document,  but the remainder of this Indenture
and such Notes shall be unaffected thereby.


SECTION 1404.  Conditions to Defeasance or Covenant Defeasance.

      The following  shall be the conditions to the  application of Section 1402
or Section 1403 to any Notes or any series of Notes, as the case may be:

      (1) The Company shall irrevocably have deposited or caused to be deposited
   with the  Trustee  as trust  funds in trust for the  purpose  of  making  the
   following  payments,  specifically  pledged as security  for,  and  dedicated
   solely to, the benefit of the Holders of such Notes,  (A) money in an amount,
   or (B) U.S.  Government  Obligations  which through the scheduled  payment of
   principal and interest in respect thereof in accordance with their terms will
   provide, not later than one day before the due date of any payment,  money in
   an amount,  or (C) a combination  thereof,  in each case  sufficient,  in the
   opinion of a nationally  recognized  firm of independent  public  accountants
   expressed in a written certification thereof delivered to the Trustee, to pay
   and  discharge,  and  which  shall  be  applied  by the  Trustee  to pay  and
   discharge, the principal of and any premium and interest on such Notes on the
   respective Stated  Maturities or on any Redemption Date established  pursuant
   to clause (9) below,  in accordance with the terms of this Indenture and such
   Notes. As used herein,  "U.S.  Government  Obligation" means (x) any security
   which is (i) a direct  obligation  of the United  States of  America  for the
   payment of which the full faith and credit of the United States of America is
   pledged or (ii) an  obligation  of a Person  controlled  or supervised by and
   acting as an agency or  instrumentality  of the United  States of America the
   payment  of which is  unconditionally  guaranteed  as a full faith and credit
   obligation  by the United  States of  America,  which,  in either case (i) or
   (ii), is not callable or redeemable at the option of the issuer thereof,  and
   (y) any depositary receipt issued by a bank (as defined in Section 3(a)(2) of
   the Notes Act) as custodian  with respect to any U.S.  Government  Obligation
   which is  specified in Clause (x) above and held by such bank for the account
   of the holder of such  depositary  receipt,  or with  respect to any specific
   payment of principal of or interest on any U.S.  Government  Obligation which
   is so  specified  and held,  provided  that  (except as required by law) such
   custodian is not  
<PAGE>
   authorized  to make any  deduction  from the amount  payable to the holder of
   such depositary  receipt from any amount received by the custodian in respect
   of the U.S.  Government  Obligation  or the specific  payment of principal or
   interest evidenced by such depositary receipt.

      (2) In the event of an election to have Section 1402 apply to any Notes or
   any series of Notes,  as the case may be, the Company shall have delivered to
   the Trustee an Opinion of Counsel  stating  that (A) the Company has received
   from, or there has been published by, the Internal  Revenue  Service a ruling
   or (B)  since  the date of this  instrument,  there  has been a change in the
   applicable  Federal  income tax law,  in either case (A) or (B) to the effect
   that,  and based thereon such opinion shall confirm that, the Holders of such
   Notes will not  recognize  gain or loss for Federal  income tax purposes as a
   result of the deposit,  Defeasance  and discharge to be effected with respect
   to such Notes and will be subject to Federal  income tax on the same  amount,
   in the  same  manner  and at the  same  times  as  would  be the case if such
   deposit, Defeasance and discharge were not to occur.

      (3) In the event of an election to have Section 1403 apply to any Notes or
   any series of Notes,  as the case may be, the Company shall have delivered to
   the  Trustee an Opinion  of  Counsel to the effect  that the  Holders of such
   Notes will not  recognize  gain or loss for Federal  income tax purposes as a
   result of the deposit and Covenant  Defeasance to be effected with respect to
   such Notes and will be subject to Federal  income tax on the same amount,  in
   the same  manner and at the same  times as would be the case if such  deposit
   and Covenant Defeasance were not to occur.

      (4)  The  Company  shall  have  delivered  to  the  Trustee  an  Officers=
   Certificate  to the effect that neither such Notes nor any other Notes of the
   same series, if then listed on any securities exchange, will be delisted as a
   result of such deposit.

      (5) No event  which  is, or after  notice  or lapse of time or both  would
   become,  an Event of Default  with  respect to such Notes or any other  Notes
   shall have  occurred and be  continuing  at the time of such deposit or, with
   regard to any such event specified in Sections 601(6) and (7), at any time on
   or prior to the 90th day after the date of such deposit (it being  understood
   that this condition shall not be deemed satisfied until after such 90th day).

      (6) Such Defeasance or Covenant  Defeasance shall not cause the Trustee to
   have a  conflicting  interest  within the meaning of the Trust  Indenture Act
   (assuming all Notes are in default within the meaning of such Act).

      (7) Such Defeasance or Covenant Defeasance shall not result in a breach or
   violation  of,  or  constitute  a  default  under,  any  other  agreement  or
   instrument to which the Company is a party or by which it is bound.

      (8) Such Defeasance or Covenant  Defeasance  shall not result in the trust
   arising from such  deposit  constituting  an  investment  company  within the
   meaning of the  Investment  Company Act unless such trust shall be registered
   under such Act or exempt from registration thereunder.
<PAGE>
      (9) If the Notes are to be redeemed prior to Stated  Maturity  (other than
   from mandatory sinking fund payments or analogous  payments),  notice of such
   redemption shall have been duly given pursuant to this Indenture or provision
   therefor satisfactory to the Trustee shall have been made.

      (10)  The  Company  shall  have  delivered  to the  Trustee  an  Officers=
   Certificate  and an Opinion of  Counsel,  each  stating  that all  conditions
   precedent with respect to such  Defeasance or Covenant  Defeasance  have been
   complied with.


SECTION 1405.  Deposited  Money and U.S.  Government  Obligations  to Be Held in
  Trust; Miscellaneous Provisions.

      Subject to the provisions of the last paragraph of Section 1103, all money
and U.S. Government  Obligations (including the proceeds thereof) deposited with
the Trustee  pursuant  to Section  1404 in respect of any Notes shall be held in
trust and applied by the Trustee,  in  accordance  with the  provisions  of such
Notes and this  Indenture,  to the payment,  either directly or through any such
Paying  Agent  (including  the  Company  acting as its own Paying  Agent) as the
Trustee may  determine,  to the  Holders of such  Notes,  of all sums due and to
become due thereon in respect of  principal  and any premium and  interest,  but
money so held in trust need not be  segregated  from other  funds  except to the
extent required by law.

      The Company shall pay and  indemnify  the Trustee  against any tax, fee or
other  charge  imposed on or assessed  against the U.S.  Government  Obligations
deposited  pursuant to Section 1404 or the  principal  and interest  received in
respect thereof other than any such tax, fee or other charge which by law is for
the account of the Holders of Outstanding Notes.

      Anything  in this  Article to the  contrary  notwithstanding,  the Trustee
shall  deliver or pay to the Company from time to time upon Company  Request any
money or U.S. Government Obligations held by it as provided in Section 1404 with
respect to any Notes which,  in the opinion of a nationally  recognized  firm of
independent  public  accountants  expressed in a written  certification  thereof
delivered to the Trustee,  are in excess of the amount  thereof which would then
be required to be deposited to effect the Defeasance or Covenant Defeasance,  as
the case may be, with respect to such Notes.


SECTION 1406.  Reinstatement.

      If the  Trustee  or the  Paying  Agent is  unable  to apply  any  money in
accordance with this Article with respect to any Notes by reason of any order or
judgment  of any  court or  governmental  authority  enjoining,  restraining  or
otherwise  prohibiting  such  application,   then  the  obligations  under  this
Indenture and such Notes from which the Company has been  discharged or released
pursuant to Section  1402 or 1403 shall be revived and  reinstated  as though no
deposit had occurred pursuant to this Article with respect to such Notes,  until
such time as the Trustee or Paying Agent is permitted to apply all money held in
trust  pursuant to Section  1405 with respect to such Notes in  accordance  with
this  Article;  provided,  however,  that if the  Company  makes any  payment of
principal  of or any  premium  or  interest  on any  such  Note  following  such
reinstatement of its obligations,  the Company shall be subrogated 
<PAGE>
to the rights (if any) of the Holders of such Notes to receive such payment from
the money so held in trust.



                          _____________________________


      This  instrument  may be executed in any number of  counterparts,  each of
which so executed shall be deemed to be an original,  but all such  counterparts
shall together constitute but one and the same instrument.

      IN WITNESS  WHEREOF,  the parties  hereto have caused this Indenture to be
duly executed,  and their respective  corporate seals to be hereunto affixed and
attested, all as of the day and year first above written.


                                                ARIZONA PUBLIC SERVICE COMPANY


                                                By..............................
                                                Treasurer

Attest:


 .....................


                                                THE BANK OF NEW YORK, as Trustee


                                                By..............................
                                                Vice President

Attest:


 .....................
<PAGE>

STATE OF ARIZONA        )
                        )  ss.:
COUNTY OF MARICOPA      )


      On the ....  day of        before me  personally  came Nancy E.  Newquist,
to me  known,  who,  being  by me duly  sworn,  did  depose  and say that she is
Treasurer of Arizona Public Service Company,  one of the corporations  described
in and which executed the foregoing instrument;  that she knows the seal of said
corporation;  that the seal affixed to said  instrument is such corporate  seal;
that  it was so  affixed  by  authority  of  the  Board  of  Directors  of  said
corporation; and that she signed her name thereto by like authority.



                                                     ...........................



STATE OF NEW YORK    )
                     )  ss.:
COUNTY OF NEW YORK   )


      On the .... day of           , before me personally came ____________,  to
me  known,  who,  being by me duly  sworn,  did  depose  and say that he is Vice
President  of The Bank of New York,  one of the  corporations  described  in and
which  executed  the  foregoing  instrument;  that  he  knows  the  seal of said
corporation;  that the seal affixed to said  instrument is such corporate  seal;
that  it was so  affixed  by  authority  of  the  Board  of  Directors  of  said
corporation; and that he signed his name thereto by like authority.



                                                    ...........................


                                  Exhibit 5.1

                                November 1, 1996



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  $175,000,000
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  November  1,  1996,  with the
Securities and Exchange  Commission under the Securities Act of 1933, as amended
(the  "Act"),  which  Securities  include (i)  $25,000,000  of either 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) $25,000,000 of either New Bonds or Debt Securities
previously  registered under  Registration No.  33-64455,  (iii)  $25,000,000 of
either New Bonds or Debt Securities previously registered under Registration No.
33-55473,  and (iv)  $100,000,000 of First Mortgage Bonds previously  registered
under Registration No. 33-61228;  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 rending
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,  and (ii) 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
<PAGE>
Arizona Public Service Company
November 1, 1996
Page 2


to you as  contemplated  in the  Registration  Statement,  and the  Rule  462(b)
Registration  Statement,  if applicable,  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  foregoing  opinion,  we are relying  upon the opinion of
Keleher &  McLeod,  P.A.,  your New  Mexico  counsel,  to the  effect  that your
activities  to date do not  constitute  you a "public  utility"  as that term is
defined  in  the  laws  of New  Mexico,  and  that,  accordingly,  no  approval,
authorization,  or consent of the New Mexico  Public  Service  Commission or any
other  public  board or body of the  State of New  Mexico  is  required  for the
issuance and sale of the Securities.

         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
                                        ---------------------------------------------------------------------------------------
                                        September 30,                           December 31,
                                        ---------------------------------------------------------------------------------------
                                                                                                                       1991
                                           1996        1995        1994        1993        1992        1991 (a)    Adjusted (a)
                                           ----        ----        ----        ----        ----        --------    ------------
<S>                                       <C>         <C>         <C>         <C>         <C>          <C>           <C>     
Earnings:
     Net Income......................     $264,471    $239,570    $243,486    $250,386    $246,805     $(222,649)    $184,380
     Income taxes (1)................      152,186     141,267     177,244     188,907     181,355       (94,750)     128,801
     Fixed Charges...................      206,724     214,768     213,581     220,590     246,246       281,959      281,959
                                          --------    --------    --------    --------    --------     ---------     --------
       Total.........................     $623,381    $595,605    $634,311    $659,883    $674,406     $ (35,440)    $595,140
                                          ========    ========    ========    ========    ========     =========     ========

Fixed Charges:
     Interest expense................     $160,513    $168,175    $166,045    $171,272    $190,746      $227,624     $227,624
     Amortization of debt discount,
       premium and expense...........        8,684       8,622       8,854       9,203       8,000         5,995        5,995
     Estimated interest portion of
       annual rents (2)..............       37,527      37,971      38,682      40,115      47,500        48,340       48,340
                                          --------    --------    --------    --------    --------     ---------     --------
       Total.........................     $206,724    $214,768    $213,581    $220,590    $246,246     $ 281,959     $281,959
                                          ========    ========    ========    ========    ========     =========     ========

Ratio of Earnings to Fixed Charges
     (rounded down)..................         3.01        2.77        2.96        2.99        2.73         -0.13         2.11
                                          ========    ========    ========    ========    ========     =========     ========

(1)  Income Taxes:
     Charged to operations...........     $190,065    $178,865    $168,202    $168,056    $164,620     $  96,273     $117,408
     Charged (credited) to other
       accounts......................      (37,879)    (37,598)       9,042     20,851      16,735      (191,023)      11,393
                                          --------    --------    ---------   --------    --------     ----------    --------
       Total.........................     $152,186    $141,267    $177,244    $188,907    $181,355     $ (94,750)    $128,801
                                          ========    ========    ========    ========    ========     =========-    ========

(2)  Estimated interest portion of
     Unit 2 lease payments included
     in estimated interest portion of
     annual rentals..................     $ 35,166    $ 35,422    $ 35,710    $ 37,407    $ 43,581     $  43,625     $ 43,625
                                          ========    ========    ========    ========    ========     =========     ========

_______________________
(a)  The write-off resulting from a December 1991 Arizona Corporation Commission
     order settling the Company's  then-pending rate case resulted in a negative
     coverage ratio and an earnings  coverage  deficiency of approximately  $317
     million for the twelve  months  ended  December  31,  1991.  Excluding  the
     effects of the  write-off,  the coverage ratio would have been 2.11 for the
     same period.
</TABLE>

                                  Exhibit 15.1






October 30, 1996



Arizona Public Service Company
Post Office Box 53999
Phoenix, Arizona  85072-3999

We have made a review, in accordance with standards  established by the American
Institute of Certified Public  Accountants,  of the unaudited  interim financial
information of Arizona Public Service Company for the periods ended March 31 and
June 30, 1996 and 1995,  as indicated  in our reports  dated May 2 and August 1,
1996, respectively; because we did not perform an audit, we expressed no opinion
on that information.

We are aware that our  reports  referred  to above,  which are  included in your
Quarterly  Reports on Form 10-Q for the  quarters  ended March 31, 1996 and June
30, 1996 are incorporated by reference in this Registration Statement.

We are also aware that the aforementioned  reports pursuant to Rule 436(c) under
the  Securities  Act of  1933,  are not  considered  a part of the  Registration
Statement  prepared  or  certified  by an  accountant  or a report  prepared  or
certified by an accountant within the meaning of Sections 7 and 11 of the Act.


DELOITTE & TOUCHE LLP

DELOITTE & TOUCHE LLP
Phoenix, Arizona

                                  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 1, 1996,
appearing in the Annual Report on Form 10-K of Arizona  Public  Service  Company
for the year  ended  December  31,  1995 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

October 30, 1996

                                  Exhibit 25.1

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


                  New York                                13-5160382
     (Jurisdiction of incorporation                    (I.R.S. Employer
      if not a U.S. national bank)                    Identification No.)

    48 Wall Street, New York, New York                       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                   (I.R.S. Employer
    of incorporation or organization)                 Identification No.)

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

                                _________________

                              First Mortgage Bonds*
                       (Title of the indenture securities)

___________________
        *Specific title(s) to be determined in connection with sale(s) of
                             First Mortgage Bonds.
<PAGE>
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.

<TABLE>
<S>                                    <C>
Superintendent of Banks of the         2 Rector Street, New York, N.Y. 10006
   State of New York                     and Albany, N.Y. 12203
Federal Reserve Bank of New York       33 Liberty Plaza, New York, N.Y. 10045
Federal Deposit Insurance Corporation  550 17th Street, N.W., Washington, D.C. 20429
New York Clearing House Association    New York, N.Y.
</TABLE>

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

            Yes.

Item 2.     Affiliations with Obligor.

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

              None. (See Note on page 2.)

Item 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 Rule 24 of
the Commission's Rules of Practice.

            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.)

             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  the  requirements  of its
                       supervising or examining authority. (Exhibit 7 of Exhibit
                       25(a) filed with  Registration  Statement Nos.  333-14369
                       and 333-14369-01).

__________________________
     *Pursuant to General Instruction B, the Trustee has responded only to Items
1, 2 and 16 of this form since to the best of the  knowledge  of the Trustee the
obligor is not in  default  under any  indenture  under  which the  Trustee is a
trustee.
<PAGE>
                                      NOTE

                  Inasmuch  as  this  Form  T-1  is  being  filed  prior  to the
ascertainment  by the Trustee of all facts on which to base a responsive  answer
to Item 2, the answer to said Item is based on incomplete information.

                  Item 2 may,  however,  be considered as correct unless amended
by an amendment to this Form T-1.


                                    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 28th day of October, 1996.


                                                 THE BANK OF NEW YORK


                                                 By:      WALTER N. GITLIN
                                                     ---------------------------
                                                           Walter N. Gitlin
                                                           Vice President
                                     - 2 -

                                  Exhibit 25.2

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


                  New York                                   13-5160382
     (Jurisdiction of incorporation                       (I.R.S. Employer
      if not a U.S. national bank)                       Identification No.)

   48 Wall Street, New York, New York                           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                       (I.R.S. Employer
    of 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)

__________________
         *Specific title(s) to be determined in connection with sale(s)
                              of Debt Securities.
<PAGE>
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.
<TABLE>
<S>                                    <C>   
Superintendent of Banks of the         2 Rector Street, New York, N.Y. 10006
  State of New York                      and Albany, N.Y. 12203
Federal Reserve Bank of New York       33 Liberty Plaza, New York, N.Y. 10045
Federal Deposit Insurance Corporation  550 17th Street, N.W., Washington, D.C. 20429
New York Clearing House Association    New York, N.Y.
</TABLE>

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

            Yes.

Item 2.     Affiliations with Obligor.

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

            None. (See Note on page 2.)

Item 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 Rule 24 of
the Commission's Rules of Practice.

            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.)

             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  the  requirements  of its
                       supervising or examining authority. (Exhibit 7 of Exhibit
                       25(a) filed with  Registration  Statement Nos.  333-14369
                       and 333-14369-01).

___________________
      *Pursuant  to General  Instruction  B, the Trustee has  responded  only to
Items 1, 2 and 16 of this form since to the best of the knowledge of the Trustee
the obligor is not in default under any  indenture  under which the Trustee is a
trustee.
<PAGE>
                                      NOTE

                  Inasmuch  as  this  Form  T-1  is  being  filed  prior  to the
ascertainment  by the Trustee of all facts on which to base a responsive  answer
to Item 2, the answer to said Item is based on incomplete information.

                  Item 2 may,  however,  be considered as correct unless amended
by an amendment to this Form T-1.



                                    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 28th day of October, 1996.


                                                  THE BANK OF NEW YORK


                                                  By:     WALTER N. GITLIN
                                                      --------------------------
                                                          Walter N. Gitlin
                                                          Vice President
                                     - 2 -

       -------------------------------------------------------------------
                                  Exhibit 25.3

                       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.
                                      - 2 -
<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.
(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.)

           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 25th day of October, 1996.

                                    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

                                  Chemical 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 June 30, 1996, in accordance
          with a call made by the Federal Reserve Bank of this District
             pursuant to the provisions of the Federal Reserve Act.

<TABLE>
<CAPTION>
                                                                                       Dollar Amounts
                        ASSETS                                                           in Millions

<S>                                                                                         <C>     
Cash and balances due from depository institutions:
     Noninterest-bearing balances and
     currency and coin .........................................................            $  4,167
     Interest-bearing balances .................................................               5,094
Securities:.....................................................................
Held to maturity securities ....................................................               3,367
Available for sale securities...................................................              27,786
Federal Funds sold and securities purchased under
     agreements to resell in domestic offices of the
     bank and of its Edge and Agreement subsidiaries,
     and in IBF's:
     Federal funds sold ........................................................               7,204
     Securities purchased under agreements to resell ...........................                 136
Loans and lease financing receivables:
     Loans and leases, net of unearned income ......................$ 67,215
     Less: Allowance for loan and lease losses .....................   1,768
     Less: Allocated transfer risk reserve .........................      75
                                                                    --------
     Loans and leases, net of unearned income,
     allowance, and reserve ....................................................              65,372
Trading Assets..................................................................              28,610
Premises and fixed assets (including capitalized
     leases)....................................................................               1,326
Other real estate owned ........................................................                  26
Investments in unconsolidated subsidiaries and
     associated companies ......................................................                  68
Customer's liability to this bank on acceptances
     outstanding................................................................                 995
Intangible assets...............................................................                 309
Other assets....................................................................               6,993
                                                                                            --------
TOTAL ASSETS                                                                                $151,453
                                                                                            ========
</TABLE>
                                      - 4 -
<PAGE>
<TABLE>
<CAPTION>
                                             LIABILITIES
<S>                                                                                         <C>     
Deposits
     In domestic offices .......................................................            $ 46,917
     Noninterest-bearing ...........................................$ 16,711
     Interest-bearing ..............................................  30,206 
                                                                    --------
     In foreign offices, Edge and Agreement subsidiaries,                                            
     and IBF's .................................................................              31,577 
Noninterest-bearing ................................................$  2,197 
     Interest-bearing ..............................................  29,380 
                                                                    --------
                                                                                                     
Federal funds  purchased and securities  sold under  agreements 
to repurchase in domestic offices of the bank and                                
     of its Edge and Agreement subsidiaries, and in IBF's                                            
     Federal funds purchased ...................................................              12,155 
     Securities sold under agreements to repurchase ............................               8,536 
Demand notes issued to the U.S. Treasury .......................................               1,000 
Trading liabilities ............................................................              20,914 
Other Borrowed money:                                                                                
     With a remaining maturity of one year or less .............................              10,018 
With a remaining maturity of more than one year ................................                 192 
Mortgage indebtedness and obligations under capitalized                                              
     leases.....................................................................                  12 
Bank's liability on acceptances executed and outstanding .......................               1,001 
Subordinated notes and debentures ..............................................               3,411 
Other liabilities...............................................................               8,091 
                                                                                                     
TOTAL LIABILITIES ..............................................................             143,824 
                                                                                            -------- 
                                                                                                     
                                                                                                     
                                           EQUITY CAPITAL
                                                                                                     
Common stock ...................................................................                 620 
Surplus.........................................................................               4,664 
Undivided profits and capital reserves .........................................               2,970 
Net unrealized holding gains (Losses)                                                                
on available-for-sale securities ...............................................                (633)
Cumulative foreign currency translation adjustments ............................                   8 
                                                                                                     
TOTAL EQUITY CAPITAL ...........................................................               7,629 
                                                                                            -------- 
TOTAL LIABILITIES, LIMITED-LIFE PREFERRED                                                            
     STOCK AND EQUITY CAPITAL ..................................................            $151,453 
                                                                                            ======== 
</TABLE>
I, Joseph L. Sclafani,  S.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       )
                                    EDWARD D. MILLER        )DIRECTORS
                                    THOMAS G. LABRECQUE     )
                                      - 5 -

                                  Exhibit 25.4

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


              New York                                   13-5160382
  (Jurisdiction of incorporation                     (I.R.S. Employer
    if not a U.S. national bank)                    Identification No.)

 48 Wall Street, New York, New York                        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                  (I.R.S. Employer
    of incorporation or organization)               Identification No.)

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

                                _________________

                                  Senior Notes*
                       (Title of the indenture securities)

__________________
 *Specific title(s) to be determined in connection with sale(s) of Senior Notes
<PAGE>
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.

<TABLE>
<S>                                     <C>
Superintendent of Banks of the          2 Rector Street, New York, N.Y. 10006
   State of New York                      and Albany, N.Y. 12203
Federal Reserve Bank of New York        33 Liberty Plaza, New York, N.Y. 10045
Federal Deposit Insurance Corporation   550 17th Street, N.W., Washington, D.C. 20429
New York Clearing House Association     New York, N.Y.
</TABLE>

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

            Yes.

Item 2.     Affiliations with Obligor.

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

            None. (See Note on page 2.)

Item 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 Rule 24 of
the Commission's Rules of Practice.

            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.)

             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  the  requirements  of its
                       supervising or examining authority. (Exhibit 7 of Exhibit
                       25(a) filed with  Registration  Statement Nos.  333-14369
                       and 333-14369-01).

_________________
     *Pursuant to General Instruction B, the Trustee has responded only to Items
1, 2 and 16 of this form since to the best of the  knowledge  of the Trustee the
obligor is not in  default  under any  indenture  under  which the  Trustee is a
trustee.
<PAGE>
                                     NOTE

                  Inasmuch  as  this  Form  T-1  is  being  filed  prior  to the
ascertainment  by the Trustee of all facts on which to base a responsive  answer
to Item 2, the answer to said Item is based on incomplete information.

                  Item 2 may,  however,  be considered as correct unless amended
by an amendment to this Form T-1.



                                    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 28th day of October, 1996.


                                                THE BANK OF NEW YORK


                                                By:        WALTER N. GITLIN
                                                    ----------------------------
                                                           Walter N. Gitlin
                                                           Vice President
                                     - 2 -


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