ARIZONA PUBLIC SERVICE CO
10-Q, 1998-05-15
ELECTRIC & OTHER SERVICES COMBINED
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                                    FORM 10-Q
                       Securities and Exchange Commission
                             Washington, D.C. 20549

[X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
     ACT OF 1934

For the quarterly period ended      March 31, 1998
                              --------------------------

                                       OR

[ ]  TRANSITION  REPORT  PURSUANT  TO  SECTION  13 OR  15(d)  OF THE  SECURITIES
     EXCHANGE ACT OF 1934

For the transition period from                  to
                              ------------------  ------------------

Commission file number    1-4473
                      --------------

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

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

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

Registrant's telephone number, including area code:            (602) 250-1000


   --------------------------------------------------------------------------
   (Former name, former address and former fiscal year, if changed since last
                                     report)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.

                               Yes   X   No      
                                   -----    -----

Indicate the number of shares  outstanding  of each of the  issuer's  classes of
common stock, as of the latest practicable date.

               Number of shares of common stock, $2.50 par value,
               outstanding as of May 15, 1998: 71,264,947
<PAGE>
                                    Glossary
                                    --------

ACC - Arizona Corporation Commission

ACC Staff - Staff of the Arizona Corporation Commission

Cholla - Cholla Power Plant

Company - Arizona Public Service Company

EITF - Emerging Issues Task Force

EITF 97-4 - Emerging  Issues Task Force  Issue No.  97-4,  "Deregulation  of the
Pricing of Electricity --- Issues Related to the Applications of FASB Statements
No. 71, Accounting for the Effects of Certain Types of Regulation,  and No. 101,
Regulated  Enterprises --- Accounting for the  Discontinuation of Application of
FASB Statement No. 71"

EPA - United States Environmental Protection Agency

FERC - Federal Energy Regulatory Commission

Four Corners - Four Corners Power Plant

ITC - Investment tax credit

1997 10-K - Arizona  Public  Service  Company Annual Report on Form 10-K for the
fiscal year ended December 31, 1997

NGS - Navajo Generating Station

Palo Verde - Palo Verde Nuclear Generating Station

Pinnacle West - Pinnacle West Capital Corporation

Power Coordination Agreement - 1955 agreement between the Company and Salt River
Project that provides for certain electric system and power sales

Rules  - Rules  adopted  by the ACC for  the  introduction  of  retail  electric
competition in Arizona

SFAS No. 71 - Statement of Financial  Accounting  Standards No. 71,  "Accounting
for the Effects of Certain Types of Regulation"

SFAS No. 130 - Statement of Financial  Accounting  Standards No. 130, "Reporting
Comprehensive Income"

SFAS No. 131 - Statement of Financial Accounting Standards No. 131, "Disclosures
about Segments of an Enterprise and Related Information"

SFAS No. 132 - Statement of Financial  Accounting Standards No. 132, "Employers'
Disclosures about Pensions and Other Postretirement Benefits"

Salt  River  Project - Salt River  Project  Agricultural  Improvement  and Power
District

Territorial  Agreement  - 1955  agreement  between  the  Company  and Salt River
Project that has provided  exclusive  retail  service  territories in Arizona as
against each other
<PAGE>
                                       -2-

                         PART I - FINANCIAL INFORMATION
                         ------------------------------

Item 1. Financial Statements
- ----------------------------

                         ARIZONA PUBLIC SERVICE COMPANY
                         CONDENSED STATEMENTS OF INCOME
                         ------------------------------
                                   (Unaudited)
                                                              Three Months
                                                             Ended March 31,
                                                         ----------------------
                                                            1998         1997
                                                         ---------    ---------
                                                         (Thousands of Dollars)

ELECTRIC OPERATING REVENUES ..........................   $ 380,423    $ 379,021
                                                         ---------    ---------

FUEL EXPENSES:
  Fuel for electric generation .......................      50,328       51,122
  Purchased power ....................................      23,589       34,347
                                                         ---------    ---------
     Total ...........................................      73,917       85,469
                                                         ---------    ---------
OPERATING REVENUES LESS FUEL EXPENSES ................     306,506      293,552
                                                         ---------    ---------

OTHER OPERATING EXPENSES:
  Operations and maintenance excluding fuel expenses .      96,416       88,016
  Depreciation and amortization ......................      92,147       92,015
  Income taxes .......................................      24,464       22,292
  Other taxes ........................................      29,938       29,790
                                                         ---------    ---------
     Total ...........................................     242,965      232,113
                                                         ---------    ---------
OPERATING INCOME .....................................      63,541       61,439
                                                         ---------    ---------

OTHER INCOME (DEDUCTIONS):
  Other - net ........................................      (2,396)      (2,209)
  Income taxes .......................................       4,455        4,340
                                                         ---------    ---------
     Total ...........................................       2,059        2,131
                                                         ---------    ---------
INCOME BEFORE INTEREST DEDUCTIONS ....................      65,600       63,570
                                                         ---------    ---------

INTEREST DEDUCTIONS:
  Interest on long-term debt .........................      35,183       34,429
  Interest on short-term borrowings ..................         684        2,328
  Debt discount, premium and expense .................       1,949        2,002
  Capitalized interest ...............................      (4,151)      (3,834)
                                                         ---------    ---------
     Total ...........................................      33,665       34,925
                                                         ---------    ---------

NET INCOME ...........................................      31,935       28,645
PREFERRED STOCK DIVIDEND REQUIREMENTS ................       2,878        3,626
                                                         ---------    ---------
EARNINGS FOR COMMON STOCK ............................   $  29,057    $  25,019
                                                         =========    =========

See Notes to Condensed Financial Statements.
<PAGE>
                                       -3-

                         ARIZONA PUBLIC SERVICE COMPANY
                         CONDENSED STATEMENTS OF INCOME
                         ------------------------------
                                   (Unaudited)
<TABLE>
<CAPTION>
                                                              Twelve Months
                                                             Ended March 31,
                                                       --------------------------
                                                           1998           1997
                                                       -----------    -----------
                                                          (Thousands of Dollars)

<S>                                                    <C>            <C>        
ELECTRIC OPERATING REVENUES ........................   $ 1,879,955    $ 1,752,032
                                                       -----------    -----------

FUEL EXPENSES:
  Fuel for electric generation .....................       200,547        239,181
  Purchased power ..................................       224,528        115,539
                                                       -----------    -----------
     Total .........................................       425,075        354,720
                                                       -----------    -----------
OPERATING REVENUES LESS FUEL EXPENSES ..............     1,454,880      1,397,312
                                                       -----------    -----------

OTHER OPERATING EXPENSES:
  Operations and maintenance excluding fuel expenses       407,834        430,987
  Depreciation and amortization ....................       365,803        330,839
  Income taxes .....................................       186,909        169,446
  Other taxes ......................................       120,407        116,915
                                                       -----------    -----------
     Total .........................................     1,080,953      1,048,187
                                                       -----------    -----------
OPERATING INCOME ...................................       373,927        349,125
                                                       -----------    -----------

OTHER INCOME (DEDUCTIONS):
  AFUDC - equity ...................................          --            3,534
  Other - net ......................................       (10,014)       (17,462)
  Income taxes .....................................        31,528         44,242
                                                       -----------    -----------
     Total .........................................        21,514         30,314
                                                       -----------    -----------
INCOME BEFORE INTEREST DEDUCTIONS ..................       395,441        379,439
                                                       -----------    -----------

INTEREST DEDUCTIONS:
  Interest on long-term debt .......................       141,685        144,695
  Interest on short-term borrowings ................         7,760         10,279
  Debt discount, premium and expense ...............         7,738          8,061
  Capitalized interest .............................       (16,525)       (10,106)
                                                       -----------    -----------
     Total .........................................       140,658        152,929
                                                       -----------    -----------

NET INCOME .........................................       254,783        226,510
PREFERRED STOCK DIVIDEND REQUIREMENTS ..............        12,055         16,241
                                                       -----------    -----------
EARNINGS FOR COMMON STOCK ..........................   $   242,728    $   210,269
                                                       ===========    ===========
</TABLE>

See Notes to Condensed Financial Statements.
<PAGE>
                                       -4-

                         ARIZONA PUBLIC SERVICE COMPANY
                            CONDENSED BALANCE SHEETS
                            ------------------------

                                     ASSETS
                                   (Unaudited)
                                                      March 31,     December 31,
                                                         1998           1997
                                                     -----------    ------------

                                                       (Thousands of Dollars)
UTILITY PLANT:
Electric plant in service and held for future use    $ 7,024,991    $ 7,009,059
Less accumulated depreciation and amortization ...     2,685,184      2,620,607
                                                     -----------    -----------
   Net ...........................................     4,339,807      4,388,452
Construction work in progress ....................       270,147        237,492
Nuclear fuel, net of amortization ................        58,737         51,624
                                                     -----------    -----------
   Utility plant - net ...........................     4,668,691      4,677,568
                                                     -----------    -----------

INVESTMENTS AND OTHER ASSETS .....................       167,243        164,906
                                                     -----------    -----------

CURRENT ASSETS:
Cash and cash equivalents ........................         8,936         12,552
Accounts receivable:
   Service customers .............................       112,208        141,022
   Other .........................................        17,847         31,313
   Allowance for doubtful accounts ...............          (981)        (1,338)
Accrued utility revenues .........................        49,531         58,559
Materials and supplies, at average cost ..........        72,902         70,634
Fossil fuel, at average cost .....................        10,854          9,621
Deferred income taxes ............................         3,496          3,496
Other ............................................        27,013         24,529
                                                     -----------    -----------
   Total current assets ..........................       301,806        350,388
                                                     -----------    -----------

DEFERRED DEBITS:
Regulatory asset for income taxes ................       444,887        458,369
Rate synchronization cost deferral ...............       345,068        358,871
Unamortized costs of reacquired debt .............        61,592         63,501
Unamortized debt issue costs .....................        15,576         15,303
Other ............................................       236,254        242,236
                                                     -----------    -----------
   Total deferred debits .........................     1,103,377      1,138,280
                                                     -----------    -----------

   TOTAL .........................................   $ 6,241,117    $ 6,331,142
                                                     ===========    ===========

See Notes to Condensed Financial Statements.
<PAGE>
                                       -5-

                         ARIZONA PUBLIC SERVICE COMPANY
                            CONDENSED BALANCE SHEETS
                            ------------------------

                                   LIABILITIES
                                   (Unaudited)
<TABLE>
<CAPTION>
                                                                  March 31,    December 31,
                                                                    1998           1997
                                                                ------------   ------------

                                                                   (Thousands of Dollars)
<S>                                                              <C>            <C>       
CAPITALIZATION:
Common stock ...............................................     $  178,162     $  178,162
Premiums and expenses - net ................................      1,142,499      1,142,364
Retained earnings ..........................................        472,853        528,798
                                                                 ----------     ----------
   Common stock equity .....................................      1,793,514      1,849,324
Non-redeemable preferred stock .............................        141,317        142,051
Redeemable preferred stock .................................         19,110         29,110
Long-term debt less current maturities .....................      2,019,248      1,953,162
                                                                 ----------     ----------
   Total capitalization ....................................      3,973,189      3,973,647
                                                                 ----------     ----------

CURRENT LIABILITIES:
Commercial paper ...........................................         81,000        130,750
Current maturities of long-term debt .......................          4,068        104,068
Accounts payable ...........................................         72,467        107,423
Accrued taxes ..............................................        141,148         85,886
Accrued interest ...........................................         26,247         31,660
Common dividends payable ...................................         42,500           --
Customer deposits ..........................................         28,788         29,116
Other ......................................................         29,094         19,588
                                                                 ----------     ----------
   Total current liabilities ...............................        425,312        508,491
                                                                 ----------     ----------

DEFERRED CREDITS AND OTHER:
Deferred income taxes ......................................      1,337,255      1,345,177
Deferred investment tax credit .............................         56,639         60,093
Unamortized gain - sale of utility plant ...................         81,219         82,363
Customer advances for construction .........................         30,083         29,294
Other ......................................................        337,420        332,077
                                                                 ----------     ----------
   Total deferred credits and other ........................      1,842,616      1,849,004
                                                                 ----------     ----------

COMMITMENTS AND CONTINGENCIES  (Notes 5, 8, and 9)

   TOTAL ...................................................     $6,241,117     $6,331,142
                                                                 ==========     ==========
</TABLE>

See Notes to Condensed Financial Statements.
<PAGE>
                                       -6-

                         ARIZONA PUBLIC SERVICE COMPANY
                       CONDENSED STATEMENTS OF CASH FLOWS
                       ----------------------------------
                                   (Unaudited)
                                                              Three Months
                                                             Ended March 31,
                                                         ----------------------
                                                            1998         1997
                                                         ---------    ---------
                                                         (Thousands of Dollars)
Cash Flows from Operating Activities:
  Net income .........................................   $  31,935    $  28,645
  Items not requiring cash:
    Depreciation and amortization ....................      92,147       92,015
    Nuclear fuel amortization ........................       8,417        7,523
    Deferred income taxes - net ......................      (7,010)      (8,948)
    Deferred investment tax credit - net .............      (3,454)      (3,380)
  Changes in certain current assets and liabilities:
    Accounts receivable - net ........................      41,923       24,589
    Accrued utility revenues .........................       9,028        6,244
    Materials, supplies and fossil fuel ..............      (3,501)       2,196
    Other current assets .............................      (2,484)      (2,024)
    Accounts payable .................................     (33,020)     (48,355)
    Accrued taxes ....................................      55,262       47,992
    Accrued interest .................................      (5,413)     (14,482)
    Other current liabilities ........................       7,528        4,313
  Other - net ........................................      13,730       28,385
                                                         ---------    ---------
Net cash flow provided by operating activities .......     205,088      164,713
                                                         ---------    ---------
Cash Flows from Investing Activities:
  Capital expenditures ...............................     (60,848)     (77,129)
  Capitalized interest ...............................      (4,151)      (3,834)
  Other ..............................................      (2,533)      (4,046)
                                                         ---------    ---------
      Net cash flow used for investing activities ....     (67,532)     (85,009)
                                                         ---------    ---------

Cash Flows from Financing Activities:
  Long-term debt .....................................      99,375         --
  Short-term borrowings - net ........................     (49,750)     199,400
  Dividends paid on common stock .....................     (42,500)     (42,500)
  Dividends paid on preferred stock ..................      (2,964)      (3,897)
  Repayment of preferred stock .......................     (10,599)     (25,980)
  Repayment and reacquisition of long-term debt ......    (134,734)    (193,056)
                                                         ---------    ---------
      Net cash flow used for financing activities ....    (141,172)     (66,033)
                                                         ---------    ---------

Net increase (decrease) in cash and cash equivalents .      (3,616)      13,671
Cash and cash equivalents at beginning of period .....      12,552       12,521
                                                         ---------    ---------
Cash and cash equivalents at end of period ...........   $   8,936    $  26,192
                                                         =========    =========

Supplemental Disclosure of Cash Flow Information:
  Cash paid during the period for:
    Interest (excluding capitalized interest) ........   $  37,072    $  48,051
    Income taxes .....................................   $   1,250    $   9,814

See Notes to Condensed Financial Statements.
<PAGE>
                                      -7-

                         ARIZONA PUBLIC SERVICE COMPANY

                     NOTES TO CONDENSED FINANCIAL STATEMENTS

1. In the opinion of the Company, the accompanying unaudited condensed financial
statements  contain all adjustments  (consisting of normal  recurring  accruals)
necessary to present  fairly the  financial  position of the Company as of March
31, 1998, the results of operations for the three months and twelve months ended
March 31, 1998 and 1997, and the cash flows for the three months ended March 31,
1998 and 1997. It is suggested  that these  condensed  financial  statements and
notes  to  condensed  financial  statements  be read  in  conjunction  with  the
financial  statements  and notes to  financial  statements  included in the 1997
10-K.

2.  The  Company's  operations  are  subject  to  seasonal  fluctuations,   with
variations in energy usage by customers occurring from season to season and from
month to month  within a  season,  primarily  as a result  of  changing  weather
conditions.  For this and other  reasons,  the results of operations for interim
periods are not  necessarily  indicative  of the results to be expected  for the
full year.

3. All the  outstanding  shares  of  common  stock of the  Company  are owned by
Pinnacle West.

4. See  "Liquidity  and Capital  Resources" in Part I, Item 2 of this report for
changes in capitalization for the three months ended March 31, 1998.

5. Regulatory Matters --- Electric Industry Restructuring

State

ACC  Rules.  The ACC has  been  conducting  an  ongoing  investigation  into the
restructuring  of the  Arizona  electric  industry.  In December  1996,  the ACC
adopted rules that provide a framework for the  introduction  of retail electric
competition. The ACC framework rules include the following major provisions:

o    The rules are  intended to apply to virtually  all of the Arizona  electric
     utilities regulated by the ACC, including the Company.

o    Each affected  utility would be required to make  available at least 20% of
     its 1995 system retail peak demand for competitive generation supply to all
     customer  classes  not later than  January 1, 1999;  at least 50% not later
     than January 1, 2001;  and all of its retail  demand not later than January
     1, 2003.

o    Electric  service  providers that obtain  Certificates  of Convenience  and
     Necessity (CC&Ns) from the ACC would be allowed to supply,  market,  and/or
     broker specified electric services at retail.  These services would include
     electric generation, but exclude electric transmission and distribution. 
<PAGE>
                                      -8-

o    On or before December 31, 1997, each affected  utility was required to file
     with the ACC  proposed  tariffs  for bundled  service,  if  different  than
     current  tariffs,  and unbundled  service.  Bundled  service means electric
     service  elements  (i.e.,  generation,   transmission,   distribution,  and
     ancillary  services)  provided as a package to consumers within an affected
     utility's  current service area.  Unbundled  service means electric service
     elements provided and priced separately.

o    The rules indicate that the ACC will allow recovery of unmitigated stranded
     costs.  Stranded costs are the costs of generating plants, other assets and
     contract  commitments that were prudently incurred to serve power customers
     that could go unrecovered if these customers are allowed to use open access
     to move to another  supplier.  Each  affected  utility would be required to
     file with the ACC its  estimates of  unmitigated  stranded  costs.  The ACC
     would then, after hearing and  consideration of various factors,  determine
     the  magnitude of stranded  costs and  appropriate  stranded  cost recovery
     mechanisms and charges.

The ACC  ordered  in the rules  that  numerous  issues  (including  reliability;
stranded cost measurement and recovery; the phase-in process, bundled, unbundled
and metering  services;  legal issues;  and independent system operator and spot
market development) require additional  consideration prior to implementation of
retail electric competition.  During 1997, the ACC conducted workshops to gather
input from various constituencies with respect to those issues. In 1998, the ACC
has continued conducting workshops on certain of the issues.

In February 1998, the ACC completed a formal,  generic  hearing on stranded cost
determination  and  recovery.  Based  on  various  assumptions,   estimates  and
methodologies,  the Company  currently  estimates  that its stranded costs to be
recovered (excluding  regulatory assets which have already been addressed by the
ACC) will be less than $500  million.  The Company is seeking  full  recovery of
stranded costs during a transition period proposed to go through 2006. On May 6,
1998,  an ACC  Hearing  Officer  issued  a  Recommended  Decision  in the  above
proceeding that,  although  recommending an opportunity for full recovery of the
Company's  stranded costs,  would impose certain  conditions and restrictions on
stranded cost recovery.  However,  final  decisions by the ACC have not yet been
made with respect to this issue.

The Company  believes that certain  provisions  of the ACC  framework  rules are
deficient.  In February  1997, a lawsuit was filed by the Company to protect its
legal  rights  regarding  those  rules.  That lawsuit is pending but two related
cases filed by other  utilities have been partially  decided in a manner adverse
to those utilities' positions.

Legislative Initiatives. An Arizona joint legislative committee studied electric
utility industry restructuring issues in 1996 and 1997. In conjunction with that
study,  Arizona  legislative  counsel prepared memoranda in late 1997 related to
the legal authority of
<PAGE>
                                      -9-

the ACC to deregulate the Arizona electric utility industry. The memoranda raise
a  question  as  to  the  degree  to  which  the  ACC  may,  under  the  Arizona
Constitution,  deregulate any portion of the electric utility industry and allow
rates to be determined by market  forces.  This latter issue (the ability of the
ACC to set rates  based on the  competitive  market) was decided in favor of the
ACC in the related lawsuits referenced in the preceding paragraph.

In May 1998, the final version of a bill to facilitate  implementation of retail
electric  competition in the state was approved by the  House/Senate  conference
committee of the Arizona  legislature.  The bill  includes the  following  major
provisions: (a) requirements that Arizona's largest government-operated electric
utility (Salt River Project) and, at their option, smaller city electric systems
(i) open their service  territories to electric  service  providers to implement
retail  electric  generation  competition  for 20% of each utility's 1995 retail
peak demand by December  31, 1998 and for all retail  customers  by December 31,
2000;  (ii) decrease rates by at least 10% over a ten-year  period  beginning as
early as January 1,  1991;  (iii)  implement  procedures  and public  processes,
including  judicial  review at the request of either an interested  party or the
Arizona Attorney General, for establishing the terms,  conditions and pricing of
electric  services as well as certain other decisions  affecting retail electric
competition,  which  procedures  and processes  are  comparable to those already
applicable to public  service  corporations;  (b) a  description  of the factors
which  form the basis of  consideration  by Salt River  Project  in  determining
stranded costs; and (c) a requirement, both for public power entities and public
service corporations (including the Company), that billing, collection, metering
and meter reading  services be provided on a competitive  basis during the first
two years of  competition  only for  customers  having  demands in excess of one
megawatt  (and that are  eligible  for  competitive  generation  services),  and
thereafter for all customers receiving competitive electric generation.

The legislature will also review and make  recommendations  for the 1999 Arizona
legislature on certain issues, including: whether public power entities excluded
from the  current  bill  should be included;  taxation  issues  associated  with
electric competition;  regulation of public power entities outside their service
territory;  constitutional issues relating to facilitating electric competition;
system priority,  capacity,  capability and reliability;  antitrust issues;  and
public power entities  compliance with the code of conduct and affiliate  issues
between competitive and noncompetitive service electricity  providers.  The bill
now goes to the Arizona House and Senate for a final vote and, if passed, to the
Governor for consideration.

Federal

The  Energy  Policy  Act of 1992 and recent  rulemakings  by FERC have  promoted
increased  competition in the wholesale electric power markets. The Company does
not expect these rules to have a material impact on its financial statements.

Several  electric  utility  reform  bills  have been  introduced  during  recent
congressional  sessions,  which as currently  written,  would allow consumers to
choose their  electricity  suppliers by 2000 or 2003.  These bills,  other bills
that are expected to be introduced, 
<PAGE>
                                      -10-

and ongoing  discussions  at the federal  level  suggest a wide range of opinion
that  will need to be  narrowed  before  any  substantial  restructuring  of the
electric utility industry can occur.

Regulatory Accounting

The Company prepares its financial  statements in accordance with the provisions
of Statement of Financial  Accounting  Standards (SFAS) No. 71,  "Accounting for
the Effects of Certain Types of Regulation."  SFAS No. 71 requires a cost-based,
rate-regulated  enterprise to reflect the impact of regulatory  decisions in its
financial  statements.  The  Company's  existing  regulatory  orders and current
regulatory  environment  support its accounting  practices related to regulatory
assets,  which  amounted  to  approximately $0.9 billion at March 31,  1998.  In
accordance  with  the  1996  regulatory  agreement,   the  ACC  accelerated  the
amortization  of  substantially  all of the  Company's  regulatory  assets to an
eight-year period that began July 1, 1996.

During 1997, the Emerging  Issues Task Force (EITF) of the Financial  Accounting
Standards  Board (FASB)  issued EITF 97-4,  which  requires  that SFAS No. 71 be
discontinued no later than when  legislation is passed or a rate order is issued
that  contains  sufficient  detail to determine its effect on the portion of the
business being  deregulated,  which could result in write-downs or write-offs of
physical  and/or  regulatory  assets.  Additionally,  the EITF  determined  that
regulatory  assets should not be written off if they are to be recovered  from a
portion of the entity which continues to apply SFAS No. 71.

Although  the ACC has issued  rules for  transitioning  generation  services  to
competition,  there are many unresolved  issues.  The Company continues to apply
SFAS No. 71 to all of its operations.  If rate recovery of regulatory  assets is
no longer probable, whether due to competition or regulatory action, the Company
would be required to write off the remaining balance as an extraordinary  charge
to expense.

General

The Company believes that further ACC decisions,  legislation at the Arizona and
federal  levels  and  perhaps  amendments  to the  Arizona  Constitution  (which
amendments  would  require a vote of the  people)  will  ultimately  be required
before  significant  implementation of retail electric  competition can lawfully
occur in Arizona.  Until the manner of implementation of competition,  including
addressing stranded costs, is determined,  the Company cannot accurately predict
the impact of full retail competition on its financial  position,  cash flows or
results of  operation.  As  competition  in the electric  industry  continues to
evolve,  the Company will continue to evaluate  strategies and alternatives that
will position the Company to compete in the new regulatory environment.
<PAGE>
                                      -11-

6. Regulatory Matters --- 1996 Regulatory Agreement

In April 1996, the ACC approved a regulatory  agreement  between the Company and
the ACC Staff. The major provisions of this agreement are:

o    An annual rate reduction of approximately  $48.5 million ($29 million after
     income taxes), or 3.4% on average for all customers except certain contract
     customers, effective July 1, 1996.

o    Recovery of substantially  all of the Company's  present  regulatory assets
     through accelerated  amortization over an eight-year period that began July
     1, 1996,  increasing annual amortization by approximately $120 million ($72
     million after income taxes).

o    A  formula  for  sharing   future  cost  savings   between   customers  and
     shareholders  (price reduction formula)  referencing a return on equity (as
     defined) of 11.25%.

o    A moratorium  on filing for  permanent  rate changes prior to July 2, 1999,
     except under the price  reduction  formula and under  certain other limited
     circumstances.

o    Infusion  of $200  million of common  equity  into the  Company by Pinnacle
     West, in annual payments of $50 million starting in 1996.

Pursuant to the price reduction formula,  in May 1997, the ACC approved a retail
price  decrease of  approximately  $17.6  million  ($10.5  million  after income
taxes),  or 1.2%,  effective July 1, 1997. In March 1998, the Company filed with
the ACC its  calculation  of an annual  price  reduction  of  approximately  $17
million ($10 million after income taxes),  or 1.1%, to become  effective July 1,
1998. The amount and timing of the price decrease are subject to ACC approval.

7. Agreement with Salt River Project

On April 25, 1998, the Company and Salt River Project  entered into a Memorandum
of Agreement in anticipation  of, and to facilitate,  the opening of the Arizona
electric  industry.  The Agreement contains the following major components (some
of which are subject to approval of their respective Boards of Directors):

o    The Company and Salt River Project would amend the Territorial Agreement to
     remove any barriers to the provision of competitive  electricity supply and
     non-distribution services.

o    The  Company  and Salt River  Project  would  amend the Power  Coordination
     Agreement to lower the price that the Company  will pay Salt River  Project
     for purchased power by  approximately  $17 million  (pretax) in 1999 and by
     lesser annual amounts through 2006.
<PAGE>
                                      -12-

o    The Company and Salt River Project agreed on certain legislative  positions
     regarding electric utility restructuring at the state and federal level.

An ACC docket has been established so that the ACC may review certain provisions
of the Agreement.  The ACC Staff has requested the ACC Hearing Devision to issue
a procedural order to govern the proceedings  before the ACC on this matter.  In
its request,  the ACC Staff  identified  certain issues that it believes the ACC
should consider,  including whether (a) the Territorial Agreement remains in the
public  interest,  (b)  the  Agreement  is a  restraint  of  trade,  and (c) the
Agreement will materially  lessen the potential for retail electric  competition
in Arizona. The Company cannot predict what action, if any, will result from any
ACC hearings that may be held with respect to the Agreement.

The Antitrust  Unit of the Arizona  Attorney  General's  Office,  which has been
involved in the ongoing  regulatory and  legislative  proceedings  regarding the
restructuring of the Arizona electric industry,  has requested  clarification of
the operation of certain of the Agreement's provisions. The Company is currently
engaged in discussions with the Arizona Attorney General's Office regarding this
matter.

8. The Palo Verde  participants  have  insurance for public  liability  payments
resulting  from  nuclear  energy  hazards to the full limit of  liability  under
federal law. This potential  liability is covered by primary liability insurance
provided by commercial  insurance carriers in the amount of $200 million and the
balance by an industry-wide  retrospective  assessment program. If losses at any
nuclear power plant covered by the programs  exceed the accumulated  funds,  the
Company  could  be  assessed  retrospective  premium  adjustments.  The  maximum
assessment  per  reactor  under  the  program  for  each  nuclear   incident  is
approximately  $79  million,  subject  to an  annual  limit of $10  million  per
incident. Based upon the Company's 29.1% interest in the three Palo Verde units,
the Company's  maximum  potential  assessment per incident is approximately  $69
million, with an annual payment limitation of approximately $9 million.

The Palo Verde  participants  maintain "all risk"  (including  nuclear  hazards)
insurance for property damage to, and decontamination of, property at Palo Verde
in the aggregate  amount of $2.75 billion,  a substantial  portion of which must
first be applied to  stabilization  and  decontamination.  The  Company has also
secured  insurance  against  portions of any  increased  cost of  generation  or
purchased power and business interruption resulting from a sudden and unforeseen
outage of any of the three units. The insurance  coverage  discussed in this and
the previous paragraph is subject to certain policy conditions and exclusions.

9. The Company has encountered  tube cracking in the Palo Verde steam generators
and has taken, and will continue to take, remedial actions that it believes have
slowed the rate of tube  degradation.  The  projected  service life of the steam
generators is reassessed  periodically and these analyses  indicate that it will
be economically desirable for the Company to replace the Unit 2 steam generators
between 2003 and 2008. The Company  
<PAGE>
                                      -13-

estimates that its share of the replacement costs (in 1998 dollars and including
installation  and replacement  power costs) will be  approximately  $50 million,
most of which will be incurred after the year 2000. During the fourth quarter of
1997,  the Palo  Verde  participants,  including  the  Company,  entered  into a
contract for the fabrication of two replacement  steam  generators.  The cost to
the Company is estimated at approximately $26 million.  These generators will be
used as replacements if performance of existing generators  deteriorates to less
than  acceptable  levels.  The  generators  are  expected  on site in 2002.  The
Company's share of installation costs is approximately $24 million. Based on the
latest  available  data, the Company  estimates that the Unit 1 and Unit 3 steam
generators  should  operate  for the  license  periods  (until  2025  and  2027,
respectively), although the Company will continue its normal periodic assessment
of these steam generators.

10. In the first  quarter of 1998 the Company  adopted SFAS No. 130,  "Reporting
Comprehensive  Income."  This  standard  changed the  reporting of certain items
previously reported in the common stock equity section of the balance sheet. The
effects of adopting  SFAS No. 130 were not material to the  Company's  financial
statements.

The Financial  Accounting  Standards  Board issued SFAS No. 131 on  "Disclosures
about  Segments  of an  Enterprise  and Related  Information"  and SFAS No. 132,
"Employers' Disclosures about Pensions and Other Postretirement  Benefits," both
of which are effective for fiscal years  beginning after December 15, 1997. SFAS
No.  131  requires  that  public  companies  report  certain  information  about
operating segments in their financial  statements.  It also establishes  related
disclosures about products and services,  geographic areas, and major customers.
The Company is currently  evaluating  what impact this standard will have on its
disclosures.  SFAS No. 132 standardizes the disclosure requirements for pensions
and other postretirement  benefits. It is not expected to have a material effect
on the Company's financial statement disclosures.
<PAGE>
                                      -14-

                         ARIZONA PUBLIC SERVICE COMPANY

Item 2. Management's  Discussion and Analysis of Financial Condition and Results
        ------------------------------------------------------------------------
of Operations.
- --------------

Operating Results
- -----------------

        The following table  summarizes the Company's  revenues and earnings for
the three-month and twelve-month periods ended March 31, 1998 and 1997:

                                           Periods ended March 31
                                           (Thousands of Dollars)

                                  Three Months                Twelve Months
                            ------------------------    ------------------------
                               1998          1997          1998          1997
                            ------------------------    ------------------------

Operating Revenues          $  380,423    $  379,021    $1,879,955    $1,752,032

Earnings for
Common stock                $   29,057    $   25,019    $  242,728    $  210,269


         Operating  Results -  Three-month  period ended March 31, 1998 compared
         -----------------------------------------------------------------------
         with three-month period ended March 31, 1997
         --------------------------------------------

         Earnings increased $4 million in the three-month  comparison  primarily
because of strong customer growth,  partially offset by increased operations and
maintenance expenses.

         Operating revenues increased $1 million because the effects of customer
growth ($13  million)  and weather ($3  million)  offset a decrease in sales for
resale ($10 million) and a price reduction ($4 million).  See Note 6 of Notes to
Condensed Financial Statements for information on the price reduction. Sales for
resale  are  wholesale  electricity  sales  to  third  parties  who  resell  the
electricity to their customers. The decrease in sales for resale was a result of
changes  in power  marketing  activity,  which  can vary  from  period to period
without  corresponding  effects on earnings  because of related  fluctuations in
purchased power costs.

         Operation and maintenance  expenses increased $8 million as a result of
growth and increased expenses due to impending competition, increased outages at
coal  plants  and other  miscellaneous  factors,  partially  offset  by  savings
resulting from a 1996 voluntary severance program.
<PAGE>
                                      -15-

         Operating  Results - Twelve-month  period ended March 31, 1998 compared
         -----------------------------------------------------------------------
         with twelve-month period ended March 31, 1997
         ---------------------------------------------

         Earnings  increased $32 million in the  twelve-month  comparison  ended
March 31, 1998 primarily because of customer growth; a $32 million pretax charge
in 1996 for a voluntary severance program;  two fuel-related  settlements in the
third quarter of 1997; and lower financing  costs.  These positive  factors more
than offset the effects of the 1996 regulatory agreement with the ACC, which, in
the twelve-month  comparison,  resulted in $27 million of additional  regulatory
asset amortization and a $28 million revenue decrease caused by two retail price
reductions. See Note 6 of Notes to Condensed Financial Statements for additional
information about the regulatory agreement.  In the period ended March 31, 1997,
the Company also  recognized $11 million of income tax benefits  associated with
capital loss carryforwards.

         Operating   revenues   increased  $128  million  primarily  because  of
increases in sales for resale ($95 million);  customer  growth ($59 million) and
weather effects ($12 million).  As mentioned above,  these positive factors were
partially  offset by the $28 million  revenue  decrease  caused by retail  price
reductions  and by various  other  factors ($10  million).  Sales for resale are
wholesale electricity sales to third parties who resell the electricity to their
customers.  The increase in sales for resale was a result of increased  activity
in  competitive  bulk power  markets.  The  increase in sales for resale did not
significantly  affect  earnings  because it was  substantially  offset by higher
power purchases.

         The  two  fuel-related   settlements  increased  the  Company's  pretax
earnings by approximately $21 million.  The Company's income statement  reflects
these settlements as reductions in fuel expense and as other income.

         Operations  and  maintenance  expenses were lower because of the charge
for the  voluntary  severance  program  recorded in 1996 and related  savings in
1997. These savings were partially  offset by increased  expenses as a result of
growth and competition, and other miscellaneous factors.

         Financing  costs  decreased  $10  million  because of lower  amounts of
outstanding debt and preferred stock.

         Other Income
         ------------

         As part of a 1994 rate settlement with the ACC, the Company accelerated
amortization  of  substantially  all deferred ITCs over a five-year  period that
ends on December 31, 1999.  The  amortization  of ITCs is shown on the Company's
income  statement as Other Income --- Income Taxes and  decreases  annual income
tax expense by approximately $28 million.
<PAGE>
                                      -16-

Liquidity and Capital Resources
- -------------------------------

         For the  three  months  ended  March 31,  1998,  the  Company  incurred
approximately $60 million in capital expenditures, which is approximately 19% of
the most recently estimated 1998 capital  expenditures.  The Company's projected
capital  expenditures  for the next three years are: 1998,  $323 million;  1999,
$313 million; and 2000, $306 million, respectively.  These amounts include about
$30 - $35 million each year for nuclear  fuel  expenditures.  In  addition,  the
Company is considering expanding certain of its businesses over the next several
years, which may result in increased expenditures.

         The   Company's   long-term   debt  and  preferred   stock   redemption
requirements and payment  obligations on a capitalized  lease for the next three
years are:  1998,  $165 million;  1999,  $174 million;  and 2000,  $109 million.
During the three months ended March 31, 1998, the Company redeemed approximately
$135  million  of its  long-term  debt  and  approximately  $11  million  of its
preferred stock with cash from operations and long-term and short-term  debt. As
a result of the 1996  regulatory  agreement  (see  Note 6 of Notes to  Condensed
Financial Statements), Pinnacle West invested $50 million in the Company in 1996
and 1997 and will invest similar amounts  annually in 1998 and 1999.  During the
three  months  ended  March 31,  1998,  the Company  issued $100  million of its
unsecured debt.

         Although  provisions  in the  Company's  bond  indenture,  articles  of
incorporation,  and financing  orders from the ACC establish  maximum amounts of
additional  first mortgage bonds and preferred stock that the Company may issue,
management  does not expect  any of these  restrictions  to limit the  Company's
ability to meet its capital requirements.

Year 2000 Technology Issues
- ---------------------------

         The Company has made, and will continue to make, certain  modifications
to its computer  hardware and software  systems and  applications to ensure they
are capable of handling  dates in the year 2000 and  thereafter.  The  Company's
major  computer  systems have been updated and other systems are being  analyzed
for  potential  modifications.  The  financial  impact  on  the  Company  is not
anticipated to be material to its financial  position,  cash flows or results of
operations.  The  Company is in the  process of formal  communications  with its
significant  suppliers,  business partners, and large customers to determine the
extent to which it may be affected by these third  parties'  plans to  remediate
their own year 2000 issues in a timely manner.

Competition and Electric Industry Restructuring
- -----------------------------------------------

         See Note 5 of Notes to Condensed Financial Statements in Part I, Item 1
of this  report for  discussions  of  competitive  developments  and  regulatory
accounting.  See Note 7 of Notes to Condensed  Financial  Statements  in Part I,
Item 1 of this report for a
<PAGE>
                                      -17-

discussion of a proposed amendment to a Power  Coordination  Agreement with Salt
River  Project  that the Company  estimates  would  reduce its pretax  costs for
purchased  power by  approximately  $17  million  in 1999 and by  lesser  annual
amounts through 2006.

Rate Matters
- ------------

         See Note 6 of Notes to Condensed Financial Statements in Part I, Item 1
of this report for a discussion of a proposed price reduction.

Forward-Looking Statements
- --------------------------

         The above discussion contains  forward-looking  statements that involve
risks and uncertainties.  Words such as "estimates,"  "expects,"  "anticipates,"
"plans,"    "believes,"    "projects,"   and   similar   expressions    identify
forward-looking  statements.  These risks and uncertainties include, but are not
limited to, the ongoing  restructuring of the electric industry;  the outcome of
the regulatory  proceedings relating to the restructuring;  regulatory,  tax and
environmental  legislation;  the ability of the Company to successfully  compete
outside its traditional regulated markets;  regional economic conditions,  which
could  affect  customer  growth;  the cost of debt and equity  capital;  weather
variations  affecting  customer  usage;  and  technological  developments in the
electric industry.

         These  factors and the other matters  discussed  above may cause future
results  to differ  materially  from  historical  results,  or from  results  or
outcomes currently expected or sought by the Company.
<PAGE>
                                      -18-

                           PART II - OTHER INFORMATION
                           ---------------------------

ITEM 5.      Other Information
- ------------------------------

Purported Navajo Environmental Regulation
- -----------------------------------------

         As  previously   reported,   in  February  1998,  the  EPA  promulgated
regulations  specifying  those  provisions  of the Clean Air Act for which it is
appropriate to treat Indian tribes in the same manner as states, and the Company
reviewed the  regulations to determine what effect they may have on Four Corners
and  NGS.  See  "Environmental   Matters  ---  Purported  Navajo   Environmental
Regulation"  in Part I, Item 1 of the 1997 10-K. On April 10, 1998,  the Company
filed a  Petition  for  Review in the United  States  Court of  Appeals  for the
District  of  Columbia.   Arizona  Public  Service   Company  v.  United  States
Environmental Protection Agency, No. 98-1196.

         Palo Verde Nuclear Generating Station
         -------------------------------------

         See Note 9 of Notes to Condensed Financial Statements in Part I, Item 1
of this  report  for a  discussion  of issues  regarding  the Palo  Verde  steam
generators.

         Construction and Financing Programs
         -----------------------------------

         See "Liquidity and Capital  Resources" in Part I, Item 2 of this report
for a discussion of the Company's construction and financing programs.

         Competition and Electric Industry Restructuring
         -----------------------------------------------

         See Note 5 of Notes to Condensed Financial Statements in Part I, Item 1
of this report for a  discussion  of  competition  and the Rules  regarding  the
introduction of retail electric  competition in Arizona. On February 28, 1997, a
lawsuit was filed by the Company to protect its legal rights regarding the Rules
and in its complaint the Company asked the Court for (i) a judgment vacating the
retail electric  competition  rules, (ii) a declaratory  judgment that the Rules
are unlawful because,  among other things, they were entered into without proper
legal  authorization,  and (iii) a  permanent  injunction  barring  the ACC from
enforcing or implementing the Rules and from  promulgating any other regulations
without lawful authority.

ITEM 6.  Exhibits and Reports on Form 8-K
- -----------------------------------------

         (a)  Exhibits

Exhibit No.   Description
- -----------   -----------

10.1          Territorial Agreement

10.2          Power Coordination Agreement

10.3          Memorandum of Agreement between the Company and Salt River Project

27.1          Financial Data Schedule
<PAGE>
                                      -19-

     In addition to those Exhibits shown above, the Company hereby  incorporates
the  following  Exhibits  pursuant  to Exchange  Act Rule 12b-32 and  Regulation
ss.229.10(d) by reference to the filings set forth below:

<TABLE>
<CAPTION>
Exhibit No.     Description                        Originally Filed as Exhibit:      File No.(a)   Date Effective
- -----------     -----------                        ----------------------------      ---------     --------------

  <S>           <C>                                <C>                               <C>              <C>
  3.1           Bylaws, amended as of              3.1 to 1995 Form 10-K             1-4473            3-29-96
                February 20, 1996                  Report

  3.2           Resolution of Board of             3.2 to 1994 Form 10-K             1-4473            3-30-95
                Directors temporarily              Report
                suspending Bylaws in part

  3.3           Articles of Incorporation,         4.2 to Form S-3                   1-4473            9-29-93
                restated as of May 25, 1988        Registration Nos.
                                                   33-33910 and 33-55248 by
                                                   means of September 24,
                                                   1993 Form 8-K Report

  3.4           Certificates pursuant to           4.3 to Form S-3                   1-4473            9-29-93
                Sections 10-152.01 and             Registration Nos.
                10-016, Arizona Revised            33-33910 and 33-55248 by
                Statutes, establishing Series A    means of September 24, 
                through V of the Company's         1993 Form 8-K Report 
                Serial Preferred Stock

  3.5           Certificate pursuant to            4.4 to Form S-3                   1-4473            9-29-93
                Section 10-016, Arizona            Registration Nos.
                Revised Statutes, establishing     33-33910 and 33-55248 by
                Series W of the Company's          means of September 24,
                Serial Preferred Stock             1993 Form 8-K Report
</TABLE>
- ---------------------------
(a)Reports  filed  under  File  No.  1-4473  were  filed  in the  office  of the
Securities and Exchange Commission located in Washington, D.C.

         (b)  Reports on Form 8-K

         During the quarter  ended March 31,  1998,  and the period from April 1
through May 15, 1998, the Company filed the following reports on Form 8-K:

         Report dated  January 13, 1998  comprised of Exhibits to the  Company's
Registration Statements  (Registration Nos. 333-15379 and 333-27551) relating to
the Company's offering of $100 million of Notes.
<PAGE>
                                      -20-

                                   SIGNATURES
                                   ----------


         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  Company  has duly  caused  this  report to be  signed on its  behalf by the
undersigned thereunto duly authorized.




                                               ARIZONA PUBLIC SERVICE COMPANY
                                                       (Registrant)





Dated: May 15, 1998                         By: George A. Schreiber, Jr.
                                               ---------------------------------
                                               George A. Schreiber, Jr.
                                               Executive Vice President and
                                               Chief Financial Officer
                                               (Principal Financial Officer
                                               and Officer Duly Authorized
                                               sign this Report)














                                    AGREEMENT

                                       of

                                 AUGUST 31, 1955



                                     between



                               SALT RIVER PROJECT

                            AGRICULTURAL IMPROVEMENT

                               AND POWER DISTRICT



                                       and



                             ARIZONA PUBLIC SERVICE

                                     COMPANY
<PAGE>
                                TABLE OF CONTENTS
                                                                            Page
                    RECITALS                                                  1

ARTICLE I       -   DEFINITIONS                                               6

ARTICLE II      -   TERRITORIAL ALLOCATIONS                                   6

     Section A  -   Mutual Agreements with Respect to Territory,
                        Customers and Load                                    6

     Section B  -   District's Territory, Customers and Load                 11

     Section C  -   Company's Territory, Customers and Load                  23

     Section D  -   Exceptions and Reservations                              33

     Section E  -   Transfer of Facilities                                   38

ARTICLE III     -   POWER CONTRACTS                                          40

     Section A  -   Territory Equivalent Power Contracts                     40

     Section B  -   Additional Power Contract                                48

     Section C  -   General Terms and Conditions                             49

     Section D  -   Power Coordination Arrangements                          51

     Section E  -   Differences and Inconsistencies                          51

     Section F  -   Effect of Cancellation of Power Contracts                52

ARTICLE IV      -   CANCELLATION OF EXISTING AGREEMENTS                      52

ARTICLE V       -   THIRD PARTIES NOT TO BENEFIT                             52

ARTICLE VI      -   EXISTING CONTRACTS FOR SERVICE OF
                    ELECTRICAL ENERGY                                        53

ARTICLE VII     -   INDEMNITY AGAINST CUSTOMERS' CLAIMS AND
                    COOPERATION IN DEFENDING VALIDITY OF THIS
                    AGREEMENT AND POWER CONTRACTS                            54

ARTICLE VIII    -   STREET LIGHTING                                          54

ARTICLE IX      -   MISCELLANEOUS COVENANTS                                  55

ARTICLE X       -   TRANSFERS, MERGERS AND ASSIGNMENTS                       56

ARTICLE XI      -   RESTRICTIONS ON TERMINATION OF AGREEMENT                 58

ARTICLE XII     -   NOTICES                                                  59

ARTICLE XIII    -   CAPTIONS AND HEADINGS                                    59

ARTICLE XIV     -   WAIVERS                                                  59

ARTICLE XV      -   APPROVALS                                                60
<PAGE>













                                    AGREEMENT

                                       of

                                 AUGUST 31, 1955



                                     between



                               SALT RIVER PROJECT

                            AGRICULTURAL IMPROVEMENT

                               AND POWER DISTRICT



                                       and



                             ARIZONA PUBLIC SERVICE

                                     COMPANY
<PAGE>
                                    AGREEMENT
                                    ---------

         THIS  AGREEMENT  made and  entered  into as of the 31st day of  August,
1955, by and between the SALT RIVER PROJECT  AGRICULTURAL  IMPROVEMENT AND POWER
DISTRICT, an Agricultural Improvement District,  organized under the laws of the
State of Arizona,  hereinafter  celled the  "District",  and the ARIZONA  PUBLIC
SERVICE  COMPANY,  a  corporation,  organized and existing under the laws of the
State of Arizona, hereinafter called the "Company".

         WITNESSETH:

         That,  WHEREAS,  the  District  was  organized  in 1937 and now  exists
pursuant to the provisions of the Agricultural  Improvement  District Act of the
State of Arizona,  as amended,  and the territory included within its boundaries
is now included within the boundaries of the SALT RIVER PROJECT, as such Project
is hereinafter defined; and

         WHEREAS,   the   District  and  the  SALT  RIVER  VALLEY  WATER  USERS'
ASSOCIATION,  a  corporation  organized  and  existing  under  the  laws  of the
Territory, now the State, of Arizona, hereinafter called the "Association", made
and entered into an agreement on the 22nd day of March 1937, which agreement was
amended on the 28th day of February  1944,  and again amended on the 12th day of
September  1949, and by the terms of said agreement as amended,  the Association
transferred  to the  District  all  its  properties  and  facilities;  including
properties  and  facilities  for the  generation  and  distribution  of electric
energy; and

         WHEREAS,  by the said  agreement  of March 22,  1937,  as amended,  the
District  among  other  things  assumed the  obligations  and  covenants  of the
Association under all contracts to which the Association was a party, and agreed
to perform and carry out all of the duties,  obligations  and  covenants  of the
Association  under said  contracts,  included  among  which  contracts  were the
contracts  entered into between the  Association  and Central  Arizona Light and
Power Company, and between the Association and Arizona Edison Company, Inc., and
the predecessor of said latter corporation,  Arizona Edison Company,  certain of
which contracts are more specifically hereinafter referred to; and
                                        1
<PAGE>
         WHEREAS,  the Company is a public  service  corporation  organized  and
existing under the laws of the State of Arizona, having been organized under the
laws of this State on the 16th day of February  1920,  under the name of Central
Arizona Light and Power Company; and

         WHEREAS,  Arizona  Edison  Company and its  successor,  Arizona  Edison
Company,  Inc., were public service corporations organized under the laws of the
State of Arizona; and

         WHEREAS,  pursuant to an agreement of consolidation  effective March 1,
1952, Arizona Edison Company,  Inc., was merged and consolidated pursuant to the
laws of the State of Arizona into Central  Arizona Light and Power Company,  and
the name of Central Arizona Light and Power Company was concurrently  changed to
Arizona Public Service Company; and

         WHEREAS,  by virtue  of such  merger  and  consolidation,  the  Company
assumed all of the duties,  obligations  and  liabilities,  and acquired all the
rights, assets and properties of Arizona Edison Company, Inc.; and

         WHEREAS, the Association directly and in its own name rendered electric
service to its members and to the public in Maricopa, Gila and Pinal Counties of
Arizona,  from 1917 until 1937;  and since 1937,  the District has,  pursuant to
agreement between the District and the Association,  above referred to, rendered
such service in the said counties; and

         WHEREAS, the Company has been, since it commenced  operations,  engaged
in rendering  electric  (and other)  services in Maricopa and other  counties of
Arizona,  and has rendered electric service in Pinal, Gila and other counties of
Arizona since the merger or  consolidation  into it of Arizona  Edison  Company,
Inc., in 1952; and

         WHEREAS,  Arizona Edison Company,  Inc., and its corporate predecessor,
Arizona  Edison  Company,   from  September  5,  1925,   until  the  merger  and
consolidation  of Arizona  Edison  Company,  inc.,  into the Company on March 1,
1952,  rendered  electric service in Pinal,  Gila and other counties of Arizona;
and
                                        2
<PAGE>
         WHEREAS,  in certain portions of Pinal and Gila Counties (such portions
being  hereinafter  described  and  referred  to  as  the  "Eastern  Area"),  in
conformity with certain existing territorial agreements hereinafter referred to,
the Company now owns and  operates  distribution  systems in the towns of Globe,
Miami, Superior, Winkelman, and vicinity, and owns no transmission lines located
in such  area,  and the  District  principally  serves  large  mining,  milling,
smelting,  and related loads, and owns various  transmission  lines in such area
over which electricity is delivered at wholesale to the Company for distribution
in Superior, Globe, Miami, and vicinity; and

         WHEREAS,  in order to facilitate  the rendition of electric  service in
the areas served by the Company and its  predecessors and in the areas served by
the District and the  Association,  and to permit and foster the coordination of
the operations and the generating  facilities of the combined  electric systems,
certain agreements have heretofore been entered into between the Company and the
Association, and between Arizona Edison Company, Inc., or Arizona Edison Company
and the Association,  as hereinafter  referred to, pursuant to which the Company
is now purchasing  from the District  substantial  amounts of electric power and
energy at various delivery points in its system, and certain of these agreements
contain  various  provisions as to allocations of territory,  and other matters,
all as in said agreements provided, the said agreements including the following:

         (a)      Agreement dated October 23, 1922,  between the Association and
                  the Central  Arizona Light and Power Company,  which Agreement
                  was from time to time  thereafter  amended,  providing for the
                  purchase   and  sale  of  electric   energy  and  for  certain
                  allocations  of  territory,   such  Agreement  and  amendments
                  thereto  being  hereinafter  referred to as the  "Agreement of
                  1922"; and

         (b)      Agreement  dated June 24, 1925,  between the  Association  and
                  Central  Arizona  Light and Power  Company,  providing for the
                  construction  of a power plant at Mormon Flat Dam, and for the
                  purchase and sale of electric  energy,  such Agreement and its
                  various  amendments  being  hereinafter  referred  to  as  the
                  "Agreement of 1925"; and
                                        3
<PAGE>
         (c)      Agreement dated February 8, 1928,  between the Association and
                  Central  Arizona  Light and Power  Company  providing  for the
                  construction  of a  hydro-electric  plant on the Salt River at
                  Stewart  Mountain,  and for the  purchase and sale of electric
                  energy  from  said  hydro-electric   plant,  and  for  certain
                  allocations  of  territory,  such  Agreement  and its  various
                  amendments being hereinafter  referred to as the "Agreement of
                  1928"; and

         (d)      Agreement  dated July 5, 1930,  between Arizona Edison Company
                  and the  Association,  providing  for the purchase and sale of
                  electric energy and for certain allocations of territory; and

         (e)      Agreement  dated April 5, 1937,  between the  Association  and
                  Arizona  Edison  Company,  Inc.,  successor to Arizona  Edison
                  Company,  supplementing  and amending the Agreement of July 5,
                  1930; and

         (f)      Agreement dated May 31, 1951,  between Arizona Edison Company,
                  Inc.,  and  the  District,   supplementing  and  amending  the
                  Agreement of July 5, 1930; and

         WHEREAS,  the  District  recognizes  its  obligation  to carry  out and
perform the obligations of the Association and the District under the contracts,
agreements and the amendments thereto hereinabove referred to; and

         WHEREAS, the Company recognizes its obligation to carry out and perform
the  obligations  undertaken by Arizona  Edison  Company and and Arizona  Edison
Company,  Inc.,  and by it under its former  name of Central  Arizona  Light and
Power Company, under the aforesaid agreements and amendments thereto; and

         WHEREAS,  certain  disputes  and  differences  of opinion  have  arisen
between  the  Company  and the  District as to the intent and meaning of certain
portions  of the  above  mentioned  agreements,  particularly  with  respect  to
territorial allocations therein, the existence of which disputes and differences
would,  if uncomposed,  be detrimental to the efficient  coordination of the two
electric  systems,  and the existence of which would impede the  furtherance and
advancement of such coordination; and
                                        4
<PAGE>
         WHEREAS,  the parties hereto  recognize the  advantages,  economies and
increased  efficiencies  which  can be  realized  from the  coordination  of the
operations  and the  construction  programs of the two electric  systems and the
resulting public benefit; and

         WHEREAS, the District is willing to sell substantial additional amounts
of electric  power to the Company,  and the Company is willing to purchase  such
additional amounts of electric power only in the event the Company is assured of
having the  exclusive  right  insofar as the  District  is  concerned  to supply
electric  service in the territory and to the types of customers and load herein
allocated to it; and

         WHEREAS,  on the basis of the principles above set out, and since it is
in the public  interest  that they do so, the parties  hereto desire to compose,
compromise and settle  disputes and differences  existing  between them, to make
revised  allocations of territory,  customers and load, to restate,  clarify and
revise certain of the provisions of the contracts and agreements  above referred
to, to modify the existing  contractual rights and obligations  existing between
them  thereunder,  to enter into new  agreements  for the sale of electric power
between them, and to merge and  consolidate  into this Agreement the revised and
modified  agreements as to territorial  allocations and various other matters as
hereinafter set out; and

         WHEREAS,  the parties  hereto deem the making of the power  agreements,
hereinafter  more  fully  described,  and the  making  of this  Agreement  to be
desirable  in  the  best  interests  of  themselves,  their  members,  electors,
stockholders  or  shareholders,  and of the consumers and the public,  and to be
necessary  and  appropriate  in the public  interest  to foster and  advance the
regional  coordination of the electric  systems of the Company and the District,
and the parties further deem the making of such  agreements  necessary to enable
both the District and the Company to more  efficiently  and adequately  meet the
increasing  demands of the public for electric power and energy,  and to achieve
the maximum  efficiency of the overall  electric  operations of both the Company
and the District;

         NOW, THEREFORE,  in consideration of the mutual covenants hereof, IT IS
AGREED:
                                        5
<PAGE>
Article I
Article II  Section A


                             ARTICLE I - DEFINITIONS
                             -----------------------

         1. The "Salt River  Project" is a Federal  Reclamation  Project and, as
such term is herein used with  reference to territory,  shall mean all territory
lying  within  the  boundaries  of  the  Salt  River   Reservoir   District  now
particularly   described  in  Section  3  of  Article  IV  of  the  Articles  of
Incorporation of the Salt River Valley Water Users' Association,  filed February
9, 1903, as thereafter amended and now in effect.

         2. The words "now" and "present" as herein used shall refer to the date
of this Agreement hereinabove set forth.

         3. The  word  "person"  as  herein  used  shall  mean  any  individual,
corporation,  partnership,  association,  municipality,  governmental agency, or
political subdivision, of any type whatsoever.

         4.  "Customer"  as herein  used shall mean a person who  receives or is
expected to receive electric service from either the Company or the District.

                                   ARTICLE II
                                   ----------
                             TERRITORIAL ALLOCATIONS
                             -----------------------

         By  this  Article,  it is the  intent  of the  parties  to  permanently
establish and agree upon the  territories in which each may serve electric power
and  energy  to the  exclusion  of the  other,  and  furthermore  as to  certain
territory  hereinafter  described to  permanently  establish  and agree upon the
types of customers and load to be served by each to the exclusion of the other.

                  SECTION A - Mutual Agreements with Respect to
                              ---------------------------------
                              Territory, Customers and Load
                              -----------------------------

         1. Of  District.  Inasmuch  as the  statutes  of the  United  States of
America  prohibit any lease or sale of surplus power or power  privileges  which
would or might impair the efficiency of irrigation projects created 
                                       6
<PAGE>
                                                          Article II - Section A


under the Reclamation Act of 1902, as amended, and if the Company should sell or
distribute  power  within the  territory  allocated  to District in Paragraph 1,
Section B of this Article II, or to the  particular  type of customer or for the
particular type of load allocated to the District within that certain  territory
described  in  Paragraph  2 (b),  Section  B of this  Article  II,  such sale or
distribution  would or might impair the efficiency of the Salt River Project,  a
Federal Reclamation Project;  therefore,  it is agreed that neither the electric
power and energy  purchased  under the power  contract or contracts  hereinafter
referred to, nor any other electric  power and energy  purchased,  produced,  or
otherwise  acquired by the Company  will be sold,  donated or  delivered  except
through the District for use within any of the  territory  allocated to District
in said Paragraph 1, or to the particular type of customer or for the particular
type of load allocated to the District within that certain  territory  described
in said Paragraph 2 (b), and, therefore,  in the event the Company shall, except
through the District,  so sell, donate or deliver such electric power and energy
to any customer within the territory  allocated to District in said Paragraph 1,
or to such particular  customers or for such particular  types of load allocated
to the District in Paragraph 2, Section B of this Article II, or so sell, donate
or deliver such electric  power and energy to others which shall be  distributed
and/or ultimately consumed within such territory,  allocated to District in said
Paragraph l, or to or by such particular  customers or for such particular types
of load  allocated to the District in said  Paragraph 2, such sale,  donation or
delivery shall be in violation of this Agreement.

         2. Of Company.  Inasmuch as the minimum  payments to be provided for in
the power contract or contracts  hereinafter  referred to and the commitments of
the Company to take and/or pay for the electric power and energy to be furnished
to the Company by the District are  predicated on the Company's  expectation  of
selling or distributing  the full electric power and energy  requirements of its
customers  within the  territory  allocated  to Company in  Paragraphs  1 and 2,
Section C of this  Article II, and within that  certain  territory  described in
Paragraph 2 (b),  Section B of this Article II, of selling or  distributing  the
full power and energy requirements of the customers or for the types
                                        7
<PAGE>
Article II - Section A


of load which are  allocated  to the Company in Paragraph 3 of Section C of this
Article II, and inasmuch as the Company  could not  reasonably  commit itself to
pay such  minimum  payments nor to take and/or pay for such  electric  power and
energy from the District in the event the District should directly or indirectly
supply such electric power and energy, except through the Company; therefore, it
is agreed that except through the Company the District will not sell,  donate or
deliver any power and energy, purchased,  produced, or otherwise acquired by the
District, for use within the territory allocated to Company in said Paragraphs I
and 2,  Section C of this  Article II, nor will it sell,  donate or deliver such
power  and  energy  for  sale or use to or by  customers  or for  types  of load
allocated  to the  Company  in said  Paragraph  3;  therefore,  in the event the
District  shall,  except  through  the  Company,  sell,  donate or deliver  such
electric  power and energy to any  customer  within the  territory  allocated to
Company in  Paragraphs  1 and 2 of Section C of this  Article II, or within that
certain territory described in Paragraph 2 (b), Section B of this Article II, to
any customer or for any type of load  allocated to the Company in said Paragraph
3, or sell,  donate or deliver  such  electric  power and energy to others which
shall be distributed  and/or ultimately  consumed within such territory or to or
by such customers or types of load,  then such sale,  donation or delivery shall
be in violation of this Agreement.

         3. Liability for Liquidated Damages. In the event either the Company or
the District shall  inadvertently,  wilfully,  or from any cause,  including any
order of the Arizona Corporation Commission,  or other regulating body, or court
of competent jurisdiction,  sell, donate or deliver electric power and energy in
violation of the provisions of this  Agreement,  then such party,  so long as it
continues  so to do,  shall pay to the other party  liquidated  damages for such
sale, donation or delivery determined in the manner hereinafter provided.

         4. Amount of Liquidated  Damages.  In the event any such sale, donation
or delivery is made by either the Company or District to a customer in violation
of this  Agreement,  then,  for each such sale,  donation  or  delivery  made or
continued  after the tenth day after written notice has been given to cease such
sale, donation or delivery, the
                                        8
<PAGE>
                                                          Article II - Section A


party making such sale, donation or delivery shall pay to the other party hereto
as  liquidated  damages for all  electric  power and energy so sold,  donated or
delivered,  35% of the charges  applicable to such  delivery or like  deliveries
under the rate schedule or contract of the party making such delivery, or 35% of
the revenues  which would have resulted from like delivery  under the applicable
rate for like delivery by the party whose rights  hereunder  have been infringed
upon, if an applicable rate for like delivery has been established by such party
prior to the  initiation of such sale,  donation or delivery by the other party,
whichever  is the  greater;  provided,  however,  that in the  event  that  such
infringement  is  involuntary  (due to a final and  binding  order of a court or
commission  or  governmental  officer  or  agency  having  jurisdiction  in  the
premises)  either party, or if such  infringement  is voluntary,  then the party
whose rights hereunder have been infringed upon, may, upon written  notification
to the other party, require that the amount of the payment to be made hereunder,
in lieu of the amount of payment above provided,  shall be a different amount to
be agreed  upon by the  parties  as being  equal to the  revenue  derived by the
infringing  party from such  delivery,  minus the operating  revenue  deductions
attributable to such delivery.  The items to be considered as operating  revenue
deductions for the purposes hereof shall be those included as operating  revenue
deductions  in  the  Federal  Power  Commission's  Uniform  System  of  Accounts
applicable to electric utilities, or such other system of accounts applicable to
electric  utilities as may then be in effect pursuant to regulations or order of
the Federal Power  Commission or such other federal  commission or agency as may
then have jurisdiction to adopt or approve  accounting systems or procedures for
electric utilities.  Should the parties,  within ninety (90) days after delivery
of the  notification  above  provided  for,  fail to agree  upon the  "different
amount"  above  provided,   such  "different  amount"  shall  be  determined  by
arbitration,  to be  conducted in the manner  provided in the power  contract or
contracts hereinafter referred to.

         Payment in the amount  determined,  as hereinabove  provided,  shall be
made promptly  after its  determination  and if additional  amounts shall accrue
thereafter  from  continuance of such  violation,  such amounts shall be paid at
monthly intervals.
                                        9
<PAGE>
Article II - Section A


         5. Other  Remedies.  In the event of any sale,  donation or delivery of
power  and  energy in  violation  of this  Agreement,  the  party  whose  rights
hereunder  have  thereby  been  infringed  upon shall be entitled to the damages
provided in Paragraph 4, Section A of this Article II and to injunctive  relief,
and shall not be  entitled  to any other  remedies or relief at law or in equity
unless  such party has been  unable to obtain  either  injunctive  relief or the
damages  provided  in  the  said  Paragraph  4  after  full  utilization  of the
procedures  set out in the said  paragraph.  In no event may this  Agreement  be
terminated by one party hereto because of a voluntary sale, donation or delivery
in violation of this agreement by the other party, unless

         (a)      the existence of the violation has been established by a final
                  decision,  order or opinion of a court having  jurisdiction in
                  the premises, and

         (b)      after the existence of the violation has been so  established,
                  notice  has been  given by the party  whose  rights  have been
                  infringed upon of intent to terminate unless within 90 days;

                  (i)  the damages  provided in said  paragraph 4 have been paid
                       or a proffer of payment has been made, if the  infringing
                       party is lawfully able so to do, and

                  (ii) the violation has ceased,  if such cessation is requested
                       by the party whose rights have been infringed upon, and

         (c)      the infringing  party has failed to comply with the provisions
                  of items (i) and (ii) of subparagraph (b) above within such 90
                  day period, and

within 30 days  from the  expiration  of said 90 day  period  written  notice of
termination  has been given by the party whose rights have been infringed  upon.
In no event may this  Agreement be terminated by one party hereto  because of an
involuntary  sale,  donation or delivery in violation  of this  Agreement by the
other party.
                                       10
<PAGE>
                                                          Article II - Section B


         Section B - District's Territory, Customers and Load
                     ----------------------------------------

         1. Western Area. The District shall have the exclusive  right,  insofar
as the Company is  concerned,  to provide  electric  service for all purposes in
that territory within the following  described  boundaries,  ave and except such
territory  lying within said  boundaries  as to which such right is allocated to
the Company by Section C of this Article II:

                  Beginning  at the  Southeast  corner of Section  36,
         Township 3 South, Range 10 East, Gila and Salt River Base and
         Meridian, at the intersection of the South line of Township 3
         South with the East line of Range 10 East,  said point  being
         designated  as "A" on Exhibit 1; thence  Northerly  along the    "A"
         said East line of Range 10 East to its intersection  with the
         Maricopa-Pinal  County line,  said point being  designated as
         "B"  on   Exhibit   1;   thence   Easterly   along  the  said    "B"
         Maricopa-Pinal  County line to its intersection with the Gila
         County line, said point being designated as "C" on Exhibit 1;    "C"
         thence  Northwesterly along the Gila-Maricopa  County line to
         its  intersection  with the North  line of  Township 2 north;
         thence Easterly along the said North line of Township 2 North
         to a point,  designated as "D" on Exhibit 1, due South of the    "D"
         Southeast  corner of  Section 4,  Township 3 North,  Range 14
         East;  thence North on a straight line to the said  Southeast
         corner of Section 4; thence  Northerly along the Eastline  of
         said  Section 4 and along the East lines of  Sections  33 and
         28, Township 4 North,  Range 14 East;  thence  continuing due
         North on a  straight  line to the North  line of  Township  4
         North;  thence Easterly along the said North line of Township
         4 North to the  Southeast  corner of Section  33,  Township 5
         North, Range 14 East; thence Northerly along the East line of
         said  Section 33 and the East lines of Sections 28, 21, 16, 9
         and 4, Township 5 North,  Range 14 East, to the North line of
         Township  5 North,  said  point  being  designated  as "E" on    "E"
         Exhibit  1;  thence  Westerly  along the said  North  line of
         Township 5 North to its intersection with the Maricopa County
         line, said point being designated as "F" on Exhibit 1; thence    "F"
         in a  general  Northerly  and  Westerly  direction  along the
         Maricopa County line to its  intersection  with the East line
         of Range 5 East, said point
                                       11
<PAGE>
Article II - Section B


         being  designated as "G" on Exhibit 1; thence Southerly along    "G"
         the said East line of Range 5 East to the Southeast corner of
         Section 25, Township 3 North,  Range 5 East,  thence Westerly
         along the South line of said  Section 25 and the South  lines
         of Sections 26, 27, 28, 29 and 30, Township 3 North,  Range 5
         East, to the Southwest  corner of said Section 30, said point
         being  designated as "H" on Exhibit 1; thence Southerly along    "H"
         the West line of Section 31, Township 3 North,  Range 5 East,
         and along the West  lines of  Sections  6 and 7,  Township  2
         North,  Range 5 East,  to the  intersection  of the said West
         line of  Section  7 with the North  right-of-way  line of the
         Arizona  Canal as now located (see Note 1);  thence  Westerly
         along the said North  right-of-way  line of the Arizona canal
         to its  intersection  with  the  South  line of  Section  14,
         Township 2 North,  Range 4 East, said point being  designated
         as "J" on Exhibit 1; thence  Westerly along the South line of    "J"
         said Section 14 and the South line of Section 15,  Township 2
         North,  Range 4 East, to the Southwest corner of said Section
         15;  thence  Westerly  along the South  line of  Section  16,
         Township 2 North,  Range 4 East, to the  Southwest  corner of
         the  Southeast  quarter  of the  Southeast  quarter  of  said
         Section 16; thence Northerly and parallel to the East line of
         said Section 16 for a distance of 660 feet;  thence  Westerly
         and  parallel  to the South line of said  Section 16, more or
         less along the ridge of Camelback Mountain, for a distance of
         1,980  feet;  thence  Northwesterly,  more or less along said
         ridge,  on a  straight  line  to a  point  on  the  East-West
         mid-section  line of Section  17,  Township 2 North,  Range 4
         East,  said  point  being 660 feet East of the center of said
         Section 17; thence  Westerly along the East-West  mid-section
         line of said Section 17 and along the  East-West  mid-section
         line of Section 18,  Township 2 North,  Range 4 East,  to the
         center  of  said  Section  18;  thence  Northerly  along  the
         North-South  mid-section  line  of  said  Section  18 and the
         North-South  mid-section line of Section 7, Township 2 North,
         Range 4 East,  to the  North line of said  Section 7;  thence
         Westerly along the North line of said Section 7 and along the
         North  lines of  Sections  12, 11 and 10,  Township  2 North,
         Range 3 East, to the  intersection  of the North line of said
         Section 10 with the North  right-of-way  line of the  Arizona
         Canal as now located (see Note 1);
                                       12
<PAGE>
                                                Article II - Section B


         thence  Northwesterly  along the said North right-of-way line
         of the  Arizona  Canal to a point  660 feet  East of the West
         line of Section 1,  Township  3 North,  Range 1 East;  thence
         Northerly  and parallel to the West line of said Section 1 to
         a point more or less in the center of Skunk Creek, said point
         being 800 feet South of the North line of said Section 1, and
         designated  as "K" on  Exhibit 1;  thence in a  Southwesterly    "K"
         direction along the  approximate  center line of Skunk Creek,
         New River and the Agua Fria River to the  approximate  center
         of the Gila River,  said line being more fully  described  as
         follows:

                  Beginning at same said point "K" in the  approximate    "K"
         center  of Skunk  Creek 800 feet  South of the North  line of
         Section   1,   Township  3  North,   Range  1  East;   thence
         Southwesterly  on a straight line to a point on the West line
         of said  Section  1, said  point  being 900 feet South of the
         Northwest corner of said Section 1; thence Southwesterly on a
         straight  line to a point 660 feet West and 600 feet North of
         the East quarter corner of Section 2, Township 3 North, Range
         1 East;  thence  Southwesterly  on a straight line to a point
         660  feet  East  and 200 feet  South  of the  center  of said
         Section 2; thence Southwesterly on a straight line to a point
         800 feet West and 850 feet North of the South quarter  corner
         of said Section 2; thence  Westerly and parallel to the South
         line of said Section 2 to a point 1,000 feet East of the West
         line of said  Section 2; thence  Southwesterly  on a straight
         line to a point on the  South  line of said  Section  2, said
         point  being  800 feet East of the  Southwest  corner of said
         Section 2; thence Southwesterly on a straight line to a point
         on the West line of Section  11,  Township  3 North,  Range 1
         East, 660 feet South of the Northwest  corner of said Section
         11;  thence  Southwesterly  on a straight line to a point 660
         feet  East and 350  feet  North of the  Southwest  corner  of
         Section  10,   Township  3  North,   Range  1  East;   thence
         Southwesterly on a straight fine to a point 660 feet East and
         660 feet North of the South  quarter  corner of  Section  16,
         Township 3 North,  Range 1 East;  thence  Southwesterly  on a
         straight line to the center of Section 21,  Township 3 North,
         Range 1 East;  thence  Southwesterly  on a straight line to a
         point 660 feet East and 1,320 feet South of the Northwest
                                       13
<PAGE>
Article II - Section B


         corner of Section 28, Township 3 North,  Range 1 East; thence
         Southwesterly  on a straight line to the Southwest  corner of
         said Section 28; thence Southwesterly on a straight line to a
         point  on the  East-West  mid-section  line  of  Section  32,
         Township 3 North,  Range 1 East,  1,320 feet West of the East
         quarter  corner of said  Section 32;  thence  Southerly  on a
         straight line to a point 1,320 feet West and 1,320 feet South
         of the Northeast corner of Section 5, Township 2 North, Range
         1 East; thence Southwesterly on a straight line to the center
         of said  Section 5; thence  Southerly  along the  North-South
         mid-section  line to the South quarter corner of said Section
         5; thence  Southwesterly on a straight line to a point on the
         North line of  Section  18,  Township 2 North,  Range 1 East,
         1,320 feet West of the  Northeast  corner of said Section 18;
         thence  Southwesterly  on a  straight  line to a point on the
         East-West  mid-section  line of said  Section  18, said point
         being  1,320  feet  East of the West  quarter  corner of said
         Section 18;  thence  Southwesterly  on a straight line to the
         Southwest corner of said Section 18; thence  Southwesterly on
         a  straight  line to the  center of  Section  24,  Township 2
         North,  Range 1 West;  thence Southerly along the North-South
         mid-section  line of  said  Section  24 and  the  North-South
         mid-section  line of Section  25,  Township 2 North,  Range 1
         West, to the South quarter  corner of said Section 25; thence
         Southwesterly  on a straight  line to a point 1,320 feet East
         and 1,320 feet North of the  Southwest  corner of Section 36,
         Township 2 North,  Range 1 West;  thence  Southwesterly  on a
         straight  line to the  Southwest  corner of said  Section 36;
         thence Westerly along the North line of Section 2, Township 1
         North,  Range 1 West,  to the  North  quarter  corner of said
         Section 2; thence Southwesterly on a straight line to a point
         on the  East-West  mid-section  line of said  Section 2, said
         point  being 660 feet West of the  center of said  Section 2;
         thence  Southeasterly  on a  straight  line to the  center of
         Section 11, Township 1 North,  Range 1 West; thence Southerly
         along the North-South  mid-section line of said Section 11 to
         the to the South  quarter  corner of said Section 11;  thence
         Southwesterly  on a straight line to the Southwest  corner of
         Section 14, Township 1 North,
                                       14
<PAGE>
                                                Article II - Section B


         Range 1 West;  thence  Southwesterly  on a straight line to a
         point on the South  line of  Section  22,  Township  1 North,
         Range 1 West,  660 feet West of the South  quarter  corner of
         said Section 22; thence  Southwesterly  on a straight line to
         the West  quarter  corner of  Section  27,  Township 1 North,
         Range 1 West;  thence  Southwesterly  on a straight line to a
         point,  designated  as "L" on Exhibit  1, in the  approximate    "L"
         center of the Gila River; said point being on the North-South
         mid-section  line of Section  33,  Township 1 North,  Range 1
         West, 660 feet North of the center of said Section 33; thence
         in a general  Southeasterly  direction  along the approximate
         center of the Gila  River to the  South  line of  Township  3
         South; said line being more fully described as follows:

                  Beginning   at  the  same  said  point  "L"  on  the    "L"
         North-South mid-section line of Section 33, Township 1 North,
         Range 1 West,  660 feet North of the  center of said  Section
         33;  thence  Southeastly  on a straight line to the center of
         Section 34, Township 1 North,  Range 1 West;  thence Easterly
         along the East-West  mid-section  line of said Section 34 and
         the  East-West  mid-section  line of Section  35,  Township 1
         North, Range 1 West, to the center of said Section 35; thence
         Southeasterly  on a straight line to a point on the East line
         of said  Section 35, said point being 1,320 feet North of the
         Southeast  corner of said  Section 35;  thence  Easterly on a
         straight  line to a point on the  East  line of  Section  36,
         Township  1  North,  Range 1 West,  1,320  feet  North of the
         Southeast corner of said Section 36; thence  Southeasterly on
         a  straight  line to the East  quarter  corner of  Section 6,
         Township 1 South,  Range 1 East;  thence  Southerly along the
         East line of said  Section 6 and the West line of  Section 8,
         Township 1 South, Range 1 East, to the West quarter cornet of
         said Section 8; thence  Southeasterly  on a straight  line to
         the center of  Section  17,  Township 1 South,  Range 1 East;
         thence  Southeasterly  on a  straight  line to the  center of
         Section 21, Township 1 South,  Range 1 East;  thence Easterly
         along the East-West  mid-section  line of said Section 21 and
         the  East-West  mid-section  line of Section  22,  Township 1
         South, Range 1 East, to the center of said Section 22; thence
         Southeasterly  on a straight line to the Northwest  corner of
         Section 26, Township 1 South, Range 1 East;
                                       15
<PAGE>
Article II - Section B


         thence  Easterly  along the North line of said  Section 26 to
         the Northeast corner of said Section 26; thence Southeasterly
         on a straight  line to the  Southeast  corner of Section  25,
         Township 1 South,  Range 1 East;  thence  Southeasterly  on a
         straight line to the center of Section 31,  Township 1 South,
         Range  2  East;   thence   Southerly  along  the  North-South
         midsection  line  of said  Section  31 to the  South  quarter
         corner of said Section 31; thence Southeasterly on a straight
         line to the center of Section  6,  Township 2 South,  Range 2
         East; thence Southerly along the North-South mid-section line
         of said Section 6 and along the North-South  mid-section line
         of Section 7,  Township 2 South,  Range 2 East,  to the South
         quarter  corner of said Section 7; thence  Easterly along the
         South  line of said  Section 7 and  along  the North  line of
         Section  17,  Township  2 South,  Range 2 East,  to the North
         quarter corner of said Section 17; thence  Southeasterly on a
         straight line to the center of Section 16,  Township 2 South,
         Range 2 East; thence  Southeasterly on a straight line to the
         North quarter corner of Section 22, Township 2 South, Range 2
         East;  thence  Southeasterly  on a straight  line to the West
         quarter corner of Section 23, Township 2 South, Range 2 East;
         thence  Southeasterly on a straight line to the North quarter
         corner of Section 26, Township 2 South,  Range 2 East; thence
         Southeasterly  on a straight line to the East quarter  corner
         of  Section  25,  Township  2  South,  Range 2  East;  thence
         Southeasterly  on a straight line to the South quarter corner
         of  Section  30,  Township  2  South,  Range  3  East  thence
         Southerly along the North-South  mid-section  line of Section
         31,  Township  2 South,  Range 3 East,  to the South  quarter
         corner of said Section 31, said point being designated as "M"    "M"
         on Exhibit 1; thence  Southeasterly on a straight line to the
         center of Section 5, Township 3 South,  Range 3 East;  thence
         Southeasterly  on a straight line to the North quarter corner
         of  Section  9,  Township  3  South,  Range  3  East;  thence
         Southeasterly on a straight line to the center of Section 10,
         Township 3 South,  Range 3 East;  thence  Southeasterly  on a
         straight  line to the North  quarter  corner of  Section  14,
         Township 3 South,  Range 3 East;  thence  Southeasterly  on a
         straight line to the center of Section 13,  Township 3 South,
         Range 3 East; thence  Southeasterly on a straight line to the
         Southeast corner of said Section 13; thence
                                       16
<PAGE>
                                                Article II - Section B


         Southeasterly  on a straight line to the East quarter  corner
         of  Section  19,  Township  3  South,  Range 4  East;  thence
         Northeasterly  on a straight line to the Northeast  corner of
         Section  20,   Township  3  South,   Range  4  East;   thence
         Northeasterly  on a straight line to the East quarter  corner
         of  Section  16,  Township  3  South,  Range 4  East;  thence
         Easterly along the East-West  mid-section line of Section 15,
         Township 3 South, Range 4 East, to the East quarter corner of
         said  Section  15;  thence   Easterly   along  the  East-West
         mid-section  line of Section  14,  Township 3 South,  Range 4
         East,  to the East quarter  corner of said Section 14; thence
         Southeasterly  on a straight line to the Southeast  corner of
         Section  13,   Township  3  South,   Range  4  East;   thence
         Southeasterly  on a straight line to the East quarter  corner
         of  Section  19,  Township  3  South,  Range 5  East;  thence
         Easterly along the East-West  mid-section line of Section 20,
         Township 3 South, Range 5 East, to the East quarter corner of
         said  Section  20;  thence   Easterly   along  the  East-West
         mid-section  line of Section  21,  Township 3 South,  Range 5
         East, to the center of said Section 21; thence  Southeasterly
         on a straight line to the East quarter  corner of Section 28,
         Township 3 South,  Range 5 East;  thence  Southeasterly  on a
         straight  line to the East  quarter  corner  of  Section  34,
         Township 3 South,  Range 5 East;  thence  Southeasterly  on a
         straight line to the Southeast corner of Section 35, Township
         3 South,  Range 5 East, said point being designated as "N" on    "N"
         Exhibit 1; thence Easterly along the South line of Township 3
         South to its  intersection  with  the  East  line of Range 10
         East,   the  point  of  beginning,   same  said  point  being
         designated  as "A" on  Exhibit  1; a map or plat of  which is    "A"
         attached  hereto as Exhibit 1 and by reference made a part of
         this Agreement.

                  (Note 1. Arizona  Canal  as  now  located  is  being
                           surveyed  and  monumented,   and  upon  the
                           completion   of   such   survey   and   its
                           acceptance  by  the  parties   hereto  such
                           survey   shall  become  a  part  hereof  by
                           reference.)
                                       17
<PAGE>
Article II - Section B


         2. Eastern Area.

         (a) The District shall have the exclusive right, insofar as the Company
is concerned,  to provide the full electric power and energy requirements within
the  "Eastern  Area",  described  in  subparagraph  (b) of this  Paragraph 2, as
follows:

                  (1)     District  shall have the right to make direct sales to
                      the  customer   for  all  mining,   milling  and  smelting
                      operations and related exploring operations not now served
                      by  the  Company,  it  being  understood  that  oil or gas
                      drilling, pumping and production do not constitute mining,
                      milling and  smelting  operations  and  related  exploring
                      operations. The electric power and energy furnished by the
                      District to the customer under this subparagraph (1) shall
                      be sold for use by the  customer for such  operations  and
                      auxiliary loads pertinent to these  operations,  including
                      domestic and commercial uses by the employees,  officials,
                      tenants,  licensees  and agents of the customer and of any
                      company and/or corporation controlled by such customer, if
                      such  auxiliary  loads  are  supplied   through  the  same
                      delivery  point or  points  as such  mining,  milling  and
                      smelting operations and related exploring operations.  The
                      District may permit electric power and energy so furnished
                      to be resold by the customer only for such  operations and
                      auxiliary  loads  as  are  allocated  to the  District  by
                      subparagraphs  (1)  and  (2)  of  this  Paragraph  2  (a),
                      provided,  that in future  contracts with customers in the
                      Eastern  area,  exclusive  of  extensions  and renewals of
                      existing  contracts,  the District  will not permit resale
                      for domestic and commercial uses.
                                       18
<PAGE>
                                                          Article II - Section B


                  (2)     District  shall have the right to make direct sales to
                      the   customer   for  all  mineral  or  metal   processing
                      operations not now served by the Company, other than those
                      included in subparagraph  (1) of this Paragraph 2 (a). The
                      electric power and energy furnished by the District to the
                      customer under this subparagraph (2) shall be sold for use
                      by the customer for such  operations  and auxiliary  loads
                      pertinent  to these  operations,  including  domestic  and
                      commercial  uses  by the  employees,  officials,  tenants,
                      licensees  and agents of the  customer  and of any company
                      and/or  corporation  controlled by such customer,  if such
                      auxiliary  loads are  supplied  through the same  delivery
                      point  or  points  as such  mineral  or  metal  processing
                      operations.  The  District may permit  electric  power and
                      energy so furnished to be resold by the customer  only for
                      such  operations  and auxiliary  loads as are allocated to
                      the  District  by  subparagraphs   (1)  and  (2)  of  this
                      Paragraph 2 (a),  but will not in any case  permit  resale
                      for domestic or commercial purposes.  The District's right
                      to make the sales  provided for by this  subparagraph  (2)
                      shall be limited to the periods  during which such mineral
                      or metal processing  operations are owned or controlled by
                      the same exploring,  mining,  milling or smelting customer
                      owning or  controlling  operations  served by the District
                      under the provisions of subparagraph (1) of this Paragraph
                      2 (a) and  principally  involve the use or  processing  of
                      minerals  or metals  mined,  milled,  or  smelted  by such
                      customer.

                  (3)     The District shall have the right to make sales to the
                      Company  for  the  Company's  use and  for  resale  by the
                      Company  to all  customers  and for all  types of load not
                      allocated to the District for direct sale in the preceding
                      sub-paragraphs  (1)  and  (2)  of  this  paragraph  2 (a),
                      subject, however, to the following exceptions:
                                       19
<PAGE>
Article II - Section B


                  (i)      At Globe and Miami,  Arizona,  Company shall have the
                           right  to use  its  generating  facilities  presently
                           there located;

                  (ii)     If, in  accordance  with  Paragraph  4,  Section A of
                           Article III, the  District  shall not supply  certain
                           power to the Company in the Eastern area, the Company
                           shall  have the right to utilize  electric  power and
                           energy  from  sources  other  than the  District,  as
                           provided for in said Paragraph 4;

                  (iii)    If,  any or all of the power  contracts  agreed to be
                           entered into in Paragraphs 1, 2, 3 and 4 of Section A
                           of Article III are terminated, the Company shall have
                           the right to utilize  electric  power and energy from
                           sources   other  than  the  District  for  the  power
                           requirements   provided   for  in  any  of  the  said
                           contracts so terminated.

                  The  utilization  by the Company of power from  sources  other
                  than the District as provided for in exceptions  (i), (ii) and
                  (iii) of this  subparagraph  (3)  shall  not  alter,  amend or
                  affect the District's  exclusive  right to serve the customers
                  and the load  allocated  to it by this  Paragraph  2 (a) other
                  than as provided for in such exceptions.

         (b) The "Eastern area" as such phrase is herein used shall  include all
that territory within the following described boundaries:

                  Beginning at the  Southeast  corner of Section 36,  Township 3
         South,  Range 10 East,  Gila and Salt River Base and  Meridian,  at the
         intersection of the South line of Township 3 South with the
                                       20
<PAGE>
                                                Article II - Section B


         East line of Range 10 East,  said point being  designated  as
         "A" on Exhibit 2; thence  Easterly  along the said South line    "A"
         of Township 3 South to its intersection with the East line of
         Range 12 East,  being  the  Northwest  corner of  Section  6,
         Township 4 South,  Range 13 East;  thence Southerly along the
         West line of said  Section 6 for a  distance  of 1,980  feet;
         thence  following  more or less the course of the Gila River;
         more fully described as follows:

                  Beginning  at same  said  point on the West  line of
         Section 6, Township 4 South,  Range 13 East, 1,980 feet South
         of the  Northwest  corner of said Section 6; thence  Easterly
         and  parallel  to  the  North  line  of  said  Section  6 and
         continuing Easterly and parallel to the North line of Section
         5,  Township  4  South,  Range  13  East,  to a point  on the
         North-South  mid-section  line  of  said  Section  5;  thence
         Southeasterly  on a straight line to a point on the East line
         of said  Section 5, said point  being 1,320 feet North of the
         Southeast  corner of said  Section  5;  thence  Easterly  and
         parallel  to the South line of  Section 4,  Township 4 South,
         Range  13  East,  for  a  distance  of  1,320  feet;   thence
         Northeasterly  on a  straight  line  to the  center  of  said
         Section 4; thence Southeasterly on a straight line to a point
         on the West line of Section  10,  Township 4 South,  Range 13
         East,  1,320  feet  South  of the  Northwest  corner  of said
         Section  10;  thence  Northeasterly  on a straight  line to a
         point on the North line of said  Section 10, said point being
         1,320 feet West of the  Northeast  corner of said Section 10;
         thence  Southeasterly  on a  straight  line to a point on the
         West line of Section 11, Township 4 South, Range 13 East, 900
         feet South of the Northwest corner of said Section 11; thence
         Easterly and parallel to the North line of said Section 11 to
         the North-South  mid-section  line of said Section 11; thence
         Northeasterly  on a straight line to a point on the West line
         of Section 1, Township 4 South, Range 13 East, 330 feet North
         of  the   Southwest   corner  of  said   Section  1;   thence
         Southeasterly  on a straight  line to a point 1,320 feet West
         and 900 feet South of the  Northeast  corner of  Section  12,
         Township 4 South,  Range 13 East;  thence  Northeasterly on a
         straight  line to the  Northeast  corner of said  Section 12;
         thence Easterly along the South line of Section 6, Township 4
         South, Range 14 East, to the
                                       21
<PAGE>
Article II - Section B


         South  quarter  corner of said  Section 6;  thence  Southerly
         along the North-South mid-section line of Section 7, Township
         4 South,  Range 14 East,  to the  center of said  Section  7;
         thence  Southeasterly  on a  straight  line to a point on the
         East line of Section 18, Township 4 South, Range 14 East, 660
         feet South of the Northeast corner of said Section 18; thence
         Southeasterly on a straight line to a point on the South line
         of Section 17,  Township 4 South,  Range 14 East,  1,320 feet
         West of the  Southeast  corner  of said  Section  17;  thence
         Southeasterly  on a straight line to the South quarter corner
         of  Section  21,  Township  4 South,  Range  14 East;  thence
         Southerly along the North-South  mid-section  line of Section
         28,   Township  4  South,   Range  14  East,  and  along  the
         North-South mid-section line of Section 33, Township 4 South,
         Range 14 East, to a point 330 feet South of the North quarter
         corner of said Section 33, said point being designated as "H"    "H"
         on Exhibit 2; thence Easterly on a straight line through said
         Section 33 and Section 34,  Township 4 South,  Range 14 East,
         to a point on the West line of Section 35,  Township 4 South,
         Range 14 East, 330 feet South of the Northwest corner of said
         Section  35;  thence  Southeasterly  on a straight  line to a
         point on the South line of said  Section 35, said point being
         1,320 feet West of the  Southeast  corner of said Section 35;
         thence  Southeasterly  on a  straight  line to a point on the
         South line of Section 1, Township 5 South, Range 14 East, 330
         feet East of the South  quarter  corner  of said  Section  1;
         thence  Southeasterly  on a straight line to the East quarter
         corner of Section 12, Township 5 South, Range 14 East; thence
         Easterly along the East-West  midsection  lines of Sections 7
         and 8, Township 5 South, Range l5 East, to the center of said
         Section 8; thence Southeasterly on a straight line to a point
         on the South line of Section  9,  Township 5 South,  Range 15
         East,  660 feet East of the Southwest  corner of said Section
         9; thence  Southeasterly on a straight line to a point on the
         East line of Section 16, Township 5 South, Range 5 East, said
         point being 990 feet South of the East quarter corner of said
         Section 16; thence  Southeasterly  on a straight line through
         Sections 15 and 22,  Township 5 South,  Range 15 East, to the
         East  quarter  corner of said  Section  22,  said point being
         designated  as "G" on Exhibit 2;  thence  Easterly  along the
         East-West mid-sec                                                "G"
                                       22
<PAGE>
                                           Article II - Sections B & C


         tion line of Section 23, Township 5 South,  Range 15 East, to
         the center of said  Section 23;  thence  Northerly  along the
         North-South  mid-section  line of  said  Section  23,  to its
         intersection   with  the  Gila-Pinal   County  line;   thence
         Northeasterly   following   the  Gila   County  line  to  its
         intersection with the center of Black River, said point being
         designated  as "F" on Exhibit 2;  thence  Westerly  along the    "F" 
         center of the Black River to its intersection with the center       
         of the Salt  River,  said point being the  confluence  of the       
         Black and White Rivers; thence Westerly along the said center       
         of the Salt River to its intersection  with a point due South       
         of the Southeast corner of Section 4, Township 3 North, Range       
         14 East,  said point  being  designated  as "E" on Exhibit 2;       
         thence  due South on a  straight  line to the  North  line of    "E"
         Township  2 North,  said  point  being  designated  as "D" on       
         Exhibit 2; thence  Westerly along said North line of Township    "D"
         2 North to its  intersection  with the  Gila-Maricopa  County       
         line; thence  Southeasterly  along the  Gila-Maricopa  County       
         line to its intersection with the Maricopa-Pinal County line,       
         said point  being  designated  as "C" on  Exhibit  2;  thence       
         Westerly  along  the   Maricopa-Pinal   County  line  to  its    "C"
         intersection  with the East line of Range 10 East, said point       
         being  designated as "B" on Exhibit 2; thence Southerly along    "B"
         the said East line of Range 10 East to its intersection  with       
         the South line of Township 3 South,  the point of  beginning,       
         same said point being  designated  as "A" on Exhibit 2; a map    "A"
         or plat of which  is  attached  hereto  as  Exhibit  2 and by    
         reference made a part of this Agreement.

         SECTION C - Company's Territory, Customers and Load
                     ---------------------------------------

         1. Cities, Towns and Miscellaneous Areas Within Salt River Project. The
Company shall have the exclusive right, insofar as the District is concerned, to
provide electric service for all purposes in the following described territory:

         (a) Phoenix.  All that territory  lying within the following  described
         boundaries:
                                       23
<PAGE>
Article II - Section C


                  Beginning  at the  Northwest  corner of Section  26,
         Township 2 North,  Range 2 East, Gila and Salt River Base and
         Meridian,  said point being  designated  as "A" on Exhibit 3;    "A"
         thence  Southerly along the West lines of said Section 26 and
         Section 35, Township 2 North,  Range 2 East, to the Southwest
         corner of said Section 35;  thence  Westerly  along the North
         line of Section 3,  Township  1 North,  Range 2 East,  to the
         North  quarter  corner of said  Section 3;  thence  Southerly
         along the North-South  mid-section  line of said Section 3 to
         the North  quarter  corner of Section  10,  Township 1 North,
         Range 2 East;  thence  Westerly along the North lines of said
         Section 10 and Section 9, Township 1 North,  Range 2 East, to
         the  Northwest  corner of said  Section 9, said  point  being
         designated  as "B" on Exhibit 3; thence  Southerly  along the    "B"
         West line of said Section 9 to the  Southwest  corner of said
         Section  9;  thence  Easterly  along the South  lines of said
         Sections 9 and 10 to the North quarter  corner of Section 15,
         Township 1 North,  Range 2 East;  thence  Southerly along the
         North-South  mid-section lines of said Section 15 and Section
         22,  Township 1 North,  Range 2 East,  to a point  1,650 feet
         North of the South  quarter corner of Said  Section  22, said
         point being  designated as "C" on Exhibit 3; thence  Easterly    "C"
         and  parallel  to the  South  line of said  Section  22 for a
         distance of 1,980 feet;  thence Northerly and parallel to the
         East  line of said  Section  22 for a  distance  of 660 feet;
         thence  Easterly  on a  straight  line to a point on the East
         line of said Section 22, said point being 2,310 feet North of
         the Southeast corner of said Section 22; thence Easterly on a
         straight line to a point on the North-South  mid-section line
         of Section  23,  Township 1 North,  Range 2 East,  2,310 feet
         North of the South quarter  corner of said Section 23; thence
         Northeasterly  on a straight line to a point on the East line
         of said  Section  23,  said point being 330 feet North of the
         East quarter  corner of said Section 23; thence  Easterly and
         parallel  to the  East-West  mid-section  line of Section 24,
         Township 1 North,  Range 2 East,  for a distance of 660 feet;
         thence  Northerly  and  parallel  to the  West  line  of said
         Section  24 a  distance  of 330  feet;  thence  Easterly  and
         parallel to the East-
                                       24
<PAGE>
                                                Article II - Section C


         West mid-section line of said Section 24, a distance of 3,300
         feet;  thence Southerly and parallel to the East line of said
         Section  24, a distance  of 330 feet;  thence  Easterly  on a
         straight line to a point on the East line of said Section 24,
         330 feet North of the east quarter corner of said Section 24;
         thence  Northeasterly  on a  straight  line to a point on the
         North-South mid-section line of Section 19, Township I North,
         Range 3 East, 1,980 feet South of the North quarter corner of
         said  Section 19;  thence  Easterly and parallel to the North
         line of said  Section 19, a distance  of 1,980  feet;  thence
         Northerly  and parallel to the East line of said Section 19 a
         distance of 330 feet; thence Easterly on a straight line to a
         point on the East line of Section  19, said point being 1,650
         feet South of the  Northeast  corner of said Section 19, said
         point being  designated as "D" on Exhibit 3; thence Northerly    "D"
         along  the East line of said  Section  19 to a point 990 feet
         South of the  Northeast  corner of said  Section  19;  thence
         Northeasterly   on  a  straight   line  to  a  point  on  the
         North-South mid-section line of Section 20, Township 1 North,
         Range 3 East,  660 feet South of the North quarter  corner of
         said Section 20; thence  Northeasterly  to a straight line to
         the Northeast corner of said Section 20; thence Southeasterly
         on a straight line to a point on the East line of Section 21,
         Township  1  North,  Range  3 East,  330  feet  South  of the
         Northeast corner of said Section 21; thence Southeasterly  on
         a straight  line to a point on the East line of  Section  22,
         Township  1  North,  Range  3 East,  990  feet  South  of the
         Northeast  corner of said  Section 22;  thence  Easterly on a
         straight  line to a point on the  East  line of  Section  23,
         Township  1  North,  Range  3 East,  990  feet  South  of the
         Northeast  corner  of  said  Section  23,  said  point  being
         designated  as "E" on Exhibit 3;  thence  Northeasterly  on a    "E"
         straight  line through  Sections 24 and 13, Township 1 North,
         Range 3 East, to a point on the East line of said Section 13,
         said point being 330 feet South of the East quarter corner of
         said Section 13; thence Northeasterly on a straight line to a
         point on the  North-South  mid-section  line of  Section  18,
         Township 1 North, Range 4 East, 1,320 feet South of the North
         quarter corner of said
                                       25
<PAGE>
Article II - Section C


         Section 18; thence  Easterly on a straight line to a point on
         the East line of said Section 18, said point being 1,320 feet
         South of the  Northeast  corner of said  Section  18;  thence
         Northeasterly   on  a  straight   line  to  a  point  on  the
         North-South mid-section line of Section 17, Township 1 North,
         Range 4 East,  990 feet South of the North quarter  corner of
         said  Section  17;   thence   Northerly   along   North-South
         mid-section  lines of said  Section 17 and  Sections 8 and 5,
         Township 1 North,  Range 4 East, to center of said Section 5,
         said point  being  designated  as "F" on  Exhibit  3;  thence    "F"
         westerly  along  the  East-West  mid-section  lines  of  said
         Section 5 and Section 6, Township  North,  Range 4 East,  and
         Section  1,   Township  1  North,   Range  3  East,   to  the
         intersection  of  the  said  East-West  mid-section  line  of
         Section 1 with the South right-of-way line of the Grand Canal
         as now located (see Note 2); thence  Northwesterly  along the
         said South  right-of-way line of the Grand Canal through said
         Section 1 and Section 2, Township 1 North,  Range 3 East, and
         Sections  35 and 34,  Township  2 North,  Range 3 East,  to a
         point 660 feet West of the East line of said Section 34, said
         point being  designated as "G" on Exhibit 3; thence Northerly    "G"
         and  parallel  to  the  East  line  of  said  Section  34 and
         continuing  Northerly  and  parallel  to the  East  lines  of
         Sections  27 and 22,  Township  2 North,  Range 3 East,  to a
         point in said  Section  22 which is 660 feet West of the East
         line of said  Section  22 and 1,320  feet  North of the South
         line  of  said  Section  22;  thence  Westerly  along  a line
         parallel  to and 1,320  feet  North of the South line of said
         Section 22 to a point which is 660 feet East of the West line
         of said Section 22; thence Northerly and parallel to the West
         line of said Section 22 and continuing Northerly and parallel
         to the West lines of  Sections  15 and 10,  Township 2 North,
         Range 3 East, to a point where said line intersects the South
         right-of-way  line of the Arizona  Canal as now located  (see
         Note 1),  said point  being  designated  as "H" on Exhibit 3;    "H"
         thence  Northwesterly  along the said South right-of-way line
         of the Arizona  Canal through said Section 10, and Sections 3
         and 4, Township 2 North,  Range 3 East,  and Sections 33, 32,
         29 and 30, Town-
                                       26
<PAGE>
                                                Article II - Section C


         ship 3  North,  Range  3  East,  to a  point  on  said  South
         right-of-way line of the Arizona Canal which is 660 feet West
         of the East line of said Section 30, Township 3 North,  Range
         3 East,  said  point  being  designated  as "J" on Exhibit 3;    "J"
         thence Southerly on a line parallel to the East lines of said
         Section 30 and Section 31,  Township 3  North,  Range 3 East,
         and continuing Southerly on a line parallel to the East lines
         of Sections 6, 7, 18 and 19, Township 2 North,  Range 3 East,
         to a point on the South  right-of-way line of the Grand Canal
         as now located (see Note 2); thence  Southwesterly  along the
         said South  right-of-way line of the Grand Canal through said
         Section 19,  Township 2 North,  Range 3 East, and Sections 24
         and 25, Township 2 North,  Range 2 East, to its  intersection
         with the East line of Section 26,  Township 2 North,  Range 2
         East; thence Northerly along the East line of said Section 26
         to the Northeast  corner of said Section 26; thence  Westerly
         along  the North  line of said  Section  26 to the  Northwest
         corner of said Section 26, the point of beginning,  same said
         point being  designated as "A" on Exhibit 3; a map or plat of    "A"
         which is attached hereto as Exhibit 3 and by reference made a
         part of this Agreement.

                  (Note 1. Arizona  Canal  as  now  located  is  being
                           surveyed  and  monumented,   and  upon  the
                           completion   of   such   survey   and   its
                           acceptance  by  the  parties   hereto  such
                           survey   shall  become  a  part  hereof  by
                           reference.)

                  (Note 2. Grand   Canal  as  now   located  is  being
                           surveyed  and  monumented,   and  upon  the
                           completion   of   such   survey   and   its
                           acceptance  by  the  parties   hereto  such
                           survey   shall  become  a  part  hereof  by
                           reference.)

                  (b) Towns. Areas generally surrounding and including
         certain of the towns within the  boundaries of the Salt River
         Project, as follows:
                                       27
<PAGE>
Article II - Section C


         (1)      Chandler.  All that  territory  lying within the the following
                  described boundaries:

                           Beginning  at the  Northwest  corner of  Section  28,
                  Township 1 South,  Range 5 East,  Gila and Salt River Base and
                  Meridian;  thence  Easterly  along  the  North  lines  of said
                  Section 28 and Section 27, Township 1 South,  Range 5 East, to
                  the  Northeast  corner of said  Section 27;  thence  Southerly
                  along  the  East  lines of said  Section  27 and  Section  34,
                  Township 1 South,  Range 5 East,  to the  Southeast  corner of
                  said Section 34; thence Westerly along the South lines of said
                  Section 34 and Section 33, Township 1 South,  Range 5 East, to
                  the  Southwest  corner of said  Section 33;  thence  Northerly
                  along the West lines of said Section 33 and said Section 28 to
                  the  Northwest  corner  of  said  Section  28,  the  point  of
                  beginning;  a map or plat  of  which  is  attached  hereto  as
                  Exhibit 4 and by reference made a part of this Agreement.

         (2)      Gilbert.   All  that  territory  lying  within  the  following
                  described boundaries:

                           Beginning  at a point on the West line of  Section 1,
                  Township 1 South,  Range 5 East,  Gila and Salt River Base and
                  Meridian,  1,320  feet North of the  Southwest  corner of said
                  Section 1; thence  Easterly and parallel to the South lines of
                  said Section 1, and Section 6, Township 1 South, Range 6 East,
                  to a point on the East  line of said  Section  6,  said  point
                  being 1,320 feet North of the Southeast corner of said Section
                  6; thence  Southerly  along the East lines of said  Section 6,
                  Sections 7 and 18, Township 1 South,  Range 6 East, to a point
                  1,320 feet North of the  Southeast  corner of said Section 18;
                  thence  Westerly  and  parallel  to the  South  lines  of said
                  Section 18 and Section 13, Township 1 South,  Range 5 East, to
                  a point on the West line of
                                       28
<PAGE>
                                                          Article II - Section C


                  Section  13,  said  point   being  1,320  feet  North  of  the
                  Southwest  corner of said Section 13; thence  Northerly  along
                  the West  lines  of said  Section  13,  Section  12,  and said
                  Section 1,  Township 1 South,  Range 5 East,  to a point 1,320
                  feet  North of the  Southwest  corner of said  Section  1, the
                  point of beginning;  a map or plat of which is attached hereto
                  as Exhibit 5 and by reference made a part of this Agreement.

         (3)      Glendale.  All  that  territory  lying  within  the  following
                  described boundaries:

                      Beginning  at a point  on the  North  line of  Section  6,
                  Township 2 North,  Range 2 East,  Gila and Salt River Base and
                  Meridian,  660  feet  East  of the  Northwest  corner  of said
                  Section  6;  thence  Easterly  along the  North  lines of said
                  Section 6 and Section 5,  Township 2 North,  Range 2 East,  to
                  the Northeast corner of said Section 5; thence Southerly along
                  the East line of said Section 5 to a point 1,320 feet North of
                  the  Southeast  corner of said Section 5; thence  Easterly and
                  parallel  to the South line of  Section  4,  Township 2 North,
                  Range 2 East, for a distance of 1,320 feet;  thence  Southerly
                  and  parallel to the West lines of said  Section 4 and Section
                  9,  Township  2 North,  Range 2 East,  to a point in the South
                  line of Section 9, Township 2 North,  Range 2 East, 1,320 feet
                  East  of the  Southwest  corner  of  said  Section  9;  thence
                  Westerly along the South lines of said Section 9, and Sections
                  8 and 7,  Township 2 North,  Range 2 East, to a point 660 feet
                  East  of the  Southwest  corner  of  said  Section  7;  thence
                  Northerly and parallel to the West lines of said Section 7 and
                  said Section 6 to a point on the North line of said Section 6,
                  said point being 660 feet East of the Northwest corner of said
                  Section 6, the point of  beginning;  a map or plat of which is
                  attached  hereto as Exhibit 6 and by reference  made a part of
                  this Agreement.
                                       29
<PAGE>
Article - Section C


         (4)      Peoria.   All  that  territory   lying  within  the  following
                  described boundaries:

                           Beginning  at the  Northwest  corner of  Section  22,
                  Township 3 North,  Range 1 East,  Gila and Salt River Base and
                  Meridian;  thence  Easterly  along  the  North  lines  of said
                  Section 22 and Section 23, Township 3 North,  Range 1 East, to
                  the  Northeast  corner of said  Section 23;  thence  Southerly
                  along  the  East  lines of said  Section  23 and  Section  26,
                  Township 3 North,  Range 1 East,  to the  Southeast  corner of
                  said Section 26; thence Westerly along the South lines of said
                  Section 26 and Section 27, Township 3 North,  Range 1 East, to
                  the  Southwest  corner of said  Section 27;  thence  Northerly
                  along the West lines of said Section 27 and said Section 22 to
                  the  Northwest  corner  of  said  Section  22,  the  point  of
                  beginning;  a map or plat  of  which  is  attached  hereto  as
                  Exhibit 7 and by reference made a part of this Agreement.

         (5)      Scottsdale.  All that  territory  lying  within the  following
                  described boundaries:

                           Beginning  at the  Southwest  corner of  Section  27,
                  Township 2 North,  Range 4 East,  Gila and Salt River Base and
                  Meridian; thence Northerly along the West line of said Section
                  27 to the South  right-of-way line of the Arizona Canal as now
                  located  (see  Note 1);  thence in a  Northeasterly  direction
                  along  said  South  right-of-way  line  of the  Arizona  Canal
                  through  said  Section 27 and  Sections 22 and 23,  Township 2
                  North,  Range 4 East, to its intersection  with the North line
                  of said Section 23;  thence  Easterly  along the North line of
                  said  Section 23 to the  Northeast  corner of said Section 23;
                  thence  Southerly  along the East lines of said Section 23 and
                  Section 26,  Township 2 North,  Range 4 East, to the Southeast
                  corner of said Section
                                       30
<PAGE>
                                                          Article II - Section C


                  26; thence  Westerly  along the South lines of said Section 26
                  and said  Section 27 to the  Southwest  corner of said Section
                  27, the point of beginning; a map or plat of which is attached
                  hereto  as  Exhibit  8 and by  reference  made a part  of this
                  Agreement.

                           (Note 1. Arizona   Canal  as  now  located  is  being
                                    surveyed  and   monumented,   and  upon  the
                                    completion of such survey and its acceptance
                                    by the  parties  hereto  such  survey  shall
                                    become a part hereof by reference.)

         (6)      Tempe. All that territory lying within the following described
                  boundaries:

                           Beginning at a point on the South line of Section 21,
                  Township 1 North,  Range 4  East, Gila and Salt River Base and
                  Meridian,  1,320  feet  East of the  Southwest  corner of said
                  Section 21; thence Northerly and parallel to the West lines of
                  said  Section  21 and Sections  16  and 9,  Township  1 North,
                  Range 4 East, to a point 2,640 feet North of the South line of
                  said  Section 9;  thence  Easterly  and  parallel to the South
                  lines of said  Section 9 and  Sections  10 and 11,  Township 1
                  North,  Range 4 East,  to a point  2,640  feet  East and 2,640
                  feet  North of the Southwest corner of said Section 11; thence
                  Southerly  and  parallel to the West lines of said  Section 11
                  and Sections 14 and 23,  Township 1 North,  Range 4 East, to a
                  point on the South line of said  Section 23;  thence  Westerly
                  along the South lines of said  Section 23 and  Sections 22 and
                  21, Township 1 North, Range 4 East, to a point 1,320 feet East
                  of the  Southwest  corner  of said  Section  21,  the point of
                  beginning;  EXCEPTING  therefrom  Block  67  of  the  original
                  Townsite of Tempe a map or plat of
                                       31
<PAGE>
Article II - Section C


                  which is attached  hereto as Exhibit 9 and by reference made a
                  part of this Agreement.

         (c)      Miscellaneous. The following additional miscellaneous areas:

                  (1) That area near Tempe, Arizona (commonly referred to as the
                  Borden Plant Area), particularly described as follows:

                           Beginning  at a point on the  North-South  midsection
                  line of Section 23,  Township 1 North,  Range 4 East, Gila and
                  Salt River Base and  Meridian,  where  said  mid-section  line
                  intersects the North  right-of-way  line of the old Tempe-Mesa
                  Highway; said point being North 0(degree)43' West 1733.35 feet
                  from the center of said Section 23; thence North 0(degree) 43'
                  West 44 feet; thence South 85(degree) 19' East 75 feet; thence
                  North  88(degree) 29' East 100 feet;  thence North  80(degree)
                  17' East 100 feet;  thence North 71(degree) 47' East 100 feet;
                  thence  North  64(degree)  10' East  100  feet;  thence  North
                  57(degree) 52' East 135 feet; thence North 41(degree) 09' East
                  485 feet;  thence  South  O(degree)  31' East  552.2 feet to a
                  point on the  North  right-of-way  line of the old  Tempe-Mesa
                  Highway; thence Westerly along said North right-of-way line to
                  point of be ginning; a map or plat of which is attached hereto
                  as Exhibit 10 and by reference made a part of this Agreement.

                  (2) The following described area:

                           That part of the  Northwest  quarter of  Section  10,
                  Township 1 South,  Range 5 East,  Gila and Salt River Base and
                  Meridian, now being used for residential purposes,  more fully
                  described as follows:
                                       32
<PAGE>
                                                     Article II - Sections C & D


                           Beginning at the center of said Northwest  quarter of
                  Section  10;  thence  East 900  feet;  thence  South 185 feet;
                  thence West 900 feet;  thence  South 75 feet;  thence West 336
                  feet;  thence  North 585 feet;  thence  East 336 feet;  thence
                  South 325 feet to said center of Northwest  quarter of Section
                  10, the point of beginning; a map or plat of which is attached
                  hereto  as  Exhibit  11 and by  reference  made a part of this
                  Agreement.

         2. Other  Arizona  Areas.  The Company shall further have the exclusive
right, insofar as the District is concerned, to provide electric service for all
purposes in all other territory within the State of Arizona except the territory
described in Paragraphs 1 and 2 (b) of Section B of this Article II.

         3. Eastern Area. The Company shall have the exclusive right, insofar as
the  District is  concerned,  in the  territory  described  in  Paragraph 2 (b),
Section B of this Article II, to supply  electric  service to all  customers and
types of load not  allocated to the District in said  territory,  subject to the
provisions of subparagraph (3) of Paragraph 2 (a), Section B of this Article II,
with  respect  to the  right  of the  District  to  supply  to the  Company  its
requirements  of  electric  power  and  energy  for use and for  resale  in said
territory.

         SECTION D - Exceptions and Reservations
                     ---------------------------

         Notwithstanding  the  allocation of  territory,  customers and types of
load contained in this Agreement,  the following exceptions and reservations are
acknowledged  and agreed to and service of electric  power and energy under such
exceptions and  reservations may be made as hereinafter  particularly  provided,
and such service shall not be in violation of this Agreement:

         1. Own  Facilities and  Installations.  Each party hereto may serve its
own facilities and installations  with electric power and energy,  regardless of
the  location  of  such  facilities  and   installations.   By  "facilities  and
installations",  the parties  hereto mean all power plants,  substations,  water
pumps and pumping plants, office buildings, shops
                                       33
<PAGE>
Article II - Section D


and related  facilities  owned and/or operated by or on behalf of the Company or
the  District,  and used by the parties in  performing  their normal  functions,
except that any  facilities and  installations  leased by one party to the other
shall,  for the  purposes  of this  Section,  be  deemed  to be  facilities  and
installations of the lessee.

         2. Salt River Valley Water Users'  Association.  The District may serve
the  facilities  and  installations  of  the  Salt  River  Valley  Water  Users'
Association  with electric power and energy,  regardless of the location of such
facilities and  installations.  By "facilities and  installations",  the parties
hereto mean all substations,  water pumps and pumping plants,  office buildings,
shops  and  related  facilities  owned  and/or  operated  by or on behalf of the
Association and used by the Association in performing its normal functions.

         3. Roosevelt Irrigation District. The District may serve electric power
and energy to the Roosevelt Irrigation District for the purpose of pumping water
within  the  boundaries  of the Salt  River  Project  pursuant  to that  certain
contract  between the  Roosevelt  Irrigation  District and the Salt River Valley
Water Users' Association, dated February 12, 1927, as amended.

         4. Gila River  Reservation  Contract of 1907.  In the event  service is
lawfully  required under the terms of that certain  agreement between the United
States of America and the Salt River Valley Water Users'  Association,  executed
by the  Secretary of the  Interior on behalf of the United  States of America on
the 3rd day of June 1907,  the  District  may provide such service to the extent
required by such contract.

         5.  Kennecott  Copper   Corporation.   Notwithstanding  the  fact  that
Kennecott Copper Corporation may sell or deliver a portion of the electric power
and energy  purchased by it from District to Ray Electric and Telephone  Company
or its  successors  for resale in the towns of Ray,  Hayden,  Sonora and Kelvin,
Arizona, such sale or delivery by District to Kennecott Copper Corporation shall
not constitute a violation of this Agreement.
                                       34
<PAGE>
                                                          Article II - Section D


         6. Indian Service Standby Agreement.  In its letter dated July 2, 1954,
the District has proposed a contract  among the  District,  the Bureau of Indian
Affairs  of the United  States of  America  and  Kennecott  Copper  Corporation,
covering  mutual  standby  arrangements  pursuant to which the only  delivery of
electric power and energy from District's system into territory allocated to the
Company is to be the  furnishing  of standby  service on a mutual  basis for the
protection  of the service on the Bureau of Indian  Affairs 69  kilovolt  system
through  the  Hayden   interconnection   point,   together   with  any  wheeling
arrangements  required to effectuate such emergency  standby.  Deliveries  under
such contract shall not constitute violation of this Agreement.

         7. Existing Arrangements with Arizona Power Authority.

         (a) 30,000 kw Contract  between  Company and Arizona  Power  Authority.
under the terms of a letter of intent  dated  April 30,  1953,  the  Company has
agreed  to sell  up to  30,000  kw of  power  to the  Arizona  Power  Authority.
Deliveries of power and energy under the contract to be entered into between the
Company and the Authority pursuant to said letter of intent shall not constitute
a violation of this Agreement.

         (b) Standby  Arrangements.  Under the terms of the contract between the
Arizona  Power  Authority  and the  Company  dated April 30,  1953,  the parties
thereto agreed to provide for reciprocal  emergency assistance or standby during
outages of facilities of the parties to said  contract.  Deliveries of power and
energy for such purposes under such contract shall not constitute a violation of
this Agreement.

         8. Off-Peak Energy Sales.  Each of the parties hereto may sell off-peak
energy to the Arizona Power Authority  pursuant to the terms of the proposals of
each party to the Arizona Power Authority by letters dated October 27, 1954, and
the respective  acceptances of Arizona Power Authority to each dated November 1,
1954, or in accordance  with any formal  written  agreement,  which from time to
time may be made in
                                       35
<PAGE>
Article II - Section D


conformity with the terms of such letter proposals and  acceptances,  regardless
of where such energy is sold or ultimately consumed.

         9. Future  Sales to Public  Agencies.  Recognizing  that under  various
circumstances  it may neither be practicable  nor be in the public  interest for
Arizona  Power  Authority and United  States  Department of Interior,  Bureau of
Reclamation,  in purchasing  power and energy from either of the parties hereto,
to be subject to  restrictions  arising from this  Agreement,  it is agreed that
each party  hereto may  hereafter  enter into  contracts  with and make sales of
power and energy to Arizona Power  Authority and Bureau of  Reclamation  without
limitations,  insofar as the other party hereto is  concerned,  as to where such
power and energy may be sold or where it may ultimately be consumed.

         10.  Boundary  Customers.  In the event that any single  premises  of a
customer shall be situated partly in the territory  allocated to the Company and
partly in the territory allocated to the District, electric power and energy may
be sold to such customer by either party at the option of the customer, provided
that the delivery  point is located on such premises and within the territory of
the supplier,  and provided  further,  that there be no  consumption of any such
power and energy  other than by such  customer on such  premises.  In such case,
delivery  of any such  power and  energy  by one party  which may be used by the
customer within the territory of the other party shall not be deemed a violation
of this Agreement. For the purposes of this provision, the term "premises" shall
be defined as all buildings  and/or  grounds of a customer  which are contiguous
and which  normally  would be supplied  from one  delivery  point,  and the term
"delivery  point" shall mean the point at which the electric  facilities  of the
supplier attach to those of the customer.

         Neither party will,  upon the  relocation of a delivery  point into its
territory, undertake service theretofore rendered by the other party
                                       36
<PAGE>
                                                          Article II - Section D


under the foregoing  conditions  unless the relocation of the delivery point has
become advisable,  upon the basis of proper and usual engineering practices, due
to a change in the amount of load, the location of load, or other engineering or
operating factors relating to the electric consumption by the customer.  Whether
such relocation has so become advisable by reason of the foregoing factors shall
be determined by the party to whose  territory the delivery point is to be moved
but such party shall not make such determination arbitrarily or capriciously and
shall submit to the other party  prior to the  undertaking  of service the facts
and data upon which such determination was based.

         Whenever service is initiated by a party hereto to such a customer, and
conditions  thereafter  shall change so that any of the  requirements  above set
out, are no longer met, service to such premises and/or any new premises created
by such change  shall be  rendered in  conformity  with the  provisions  of this
Agreement  including the provisions of this  Paragraph 10 or shall  constitute a
violation of this Agreement.

         11.  Miscellaneous.  It is recognized that there may be instances where
it would be in the  interests  of the public and of the  parties  hereto to have
electric  power and energy  delivered by one party for use or consumption in the
territory or by  customers  or for a type of load  allocated to the other party.
Any such  deliveries  shall not be a violation of this  Agreement if made by one
party with the written  consent and  approval of a  representative  of the other
party  authorized by its Board of Directors to sign such consents and approvals.
Such written consent and approval shall be given in cases where such other party
is unable or  unwilling  to supply  service  but the giving of such  consent and
approval may be conditioned  upon  reasonable  terms and conditions  under which
such  other  party may at some  future  time take  over the  supply of  electric
service  to  the  customer  or  customers  involved  and  acquire  ownership  of
facilities  installed  for  such  services  at their  original  cost  less  book
depreciation.
                                       37
<PAGE>
Article II - Section E


         SECTION E - Transfer of Facilities
                     ----------------------

         It is recognized  that by virtue of the terms of this Agreement and the
reallocation of territory and customers  between the parties,  certain territory
and  customers  now served by the  District  will be served in the future by the
Company,  and certain  territory and customers now served by the Company will be
served in the future by the District.

         1. Upon written request by the District,  the Company will  discontinue
providing  electric  service in areas  presently  served by the Company that are
within the  territory  allocated  to the District in Paragraph I of Section B of
this Article II, and the District will thereupon provide the electric service so
discontinued; and concurrently therewith Company will sell and District will buy
facilities and installations within such areas that in Company's judgment are no
longer needed by it.

         The parties have  heretofore  agreed upon and  designated  those of Com
pany's facilities and installations  which were in place within such areas as of
November 30, 1954, and which are to be transferred  to District  hereunder.  The
price for the  facilities  of Company to be  transferred  to District  hereunder
shall be $67,063.15,  plus the original cost  installed of any other  facilities
finally  transferred  which  shall  have  been  installed  after the 30th day of
November,  1954, and prior to the date of transfer, and less the appraised value
of any facilities of Company which were included in the amount above set out and
which shall have been removed from said areas during such period. The amounts of
such  additions  and  subtractions  shall be  determined  by a competent  person
selected by mutual  agreement  of the parties who shall  determine  said amounts
from,  available  records and if advisable verify them by suitable field checks.
The  cost of such  determination  shall  be paid by the  Company  and  shall  be
included in the price for the facilities.

         2. Upon written request by the Company,  the District will  discontinue
providing  electric  service in areas and to customers  presently  served by the
District  that  are  hereby  allocated  to the  Company,  and the  Company  will
thereupon provide the electric service so discontinued.

         Excepting the  District's 115 KV  transmission  line extending from the
vicinity of Florence Junction,  Arizona,  to the vicinity of Coolidge,  Arizona,
and the District's  Blackwater  Substation  located in the vicinity of Coolidge,
Arizona, the District, concurrently with the discontinuance of service, will
                                       38
<PAGE>
                                                          Article II - Section E


sell and the Company will buy all District  facilities and installations  within
territory  allocated  to the Company that in  District's  judgment are no longer
needed by it.  Similarly  the  District  will sell and the Company  will buy the
facilities and  installations  in the Eastern area which in District's  judgment
are no longer  needed by it and which were  theretofore  used sorely for serving
customers to whom service is so discontinued.

         The  parties  have  heretofore  agreed  upon  and  designated  those of
District's facilities and installations which were in place within such areas as
of November 30, 1954, and which are to be transferred to Company hereunder.  The
price for the  facilities  of District to be  transferred  to Company  hereunder
shall be $1,304,926.27, plus the original cost installed of any other facilities
finally  transferred  which  shall  have  been  installed  after the 30th day of
November,  1954, and prior to the date of transfer, and less the appraised value
of any  facilities  of District  which were included in the amount above set out
and which  shall have been  removed  from said areas  during  such  period.  The
amounts of such  additions and  subtractions  shall be determined by a competent
person  selected by mutual  agreement  of the parties who shall  determine  said
amounts from  available  records and if advisable  verify them by suitable field
checks. The cost of such  determination  shall be paid by the District and shall
be included in the price for the facilities.

         3.  Upon the sales of the  facilities  hereinabove  referred  to by the
District or the Company,  the seller shall execute and deliver appropriate bills
of sale and/or deeds  transferring to the other party the facilities and/or land
so being sold,  and shall,  in  addition,  transfer by quit claim,  deed or such
other   instrument  or  instruments  as  the  parties  may  deem  proper,   such
transferable licenses, leases, permits, easements or rights of way as the seller
shall have for and in connection  with such  facilities so being sold, and shall
give purchaser any necessary  easements for such transferred  facilities located
on land owned by seller.

         4. Upon the transfer of territory, customers or facilities, the parties
will make reasonable  arrangements  covering refundable line advances,  security
deposits,   accounts   receivable,   unbilled  revenue,   transfer  of  records,
prepayments,  cut-over  schedules  and  other  matters  in  connection  with the
territory facilities and customers being transferred.
                                       39
<PAGE>
Article III - Section A


                                   ARTICLE III
                                   -----------

                                 POWER CONTRACTS
                                 ---------------

         This  Agreement  shall  not  become  effective  and  binding  until the
execution  by the parties  hereto of the  proposed  power  contract or contracts
between the  District  and the  Company  referred to in Sections A and D of this
Article III. The contracts referred to in this Article III, which may or may not
be embodied  in a single  instrument,  shall  embody  substantially  the matters
hereinafter set forth, and for the purpose of identification the power contracts
herein agreed to be entered into shall, upon becoming effective,  be attached to
this Agreement.

         SECTION A - Territory Equivalent Power Contracts
                     ------------------------------------

         1. Superior  Area. The District will agree to sell and the Company will
agree to buy the equivalent of all the electric power  necessary for the present
and future use and resale requirements of the Company in Superior,  Arizona, and
vicinity,  delivered at the District's  Superior Substation or such other point,
or points,  of delivery as may be agreed upon, with initial  delivery to be made
on the date  specified in the power  contract  embodying  these terms,  and at a
price to be mutually agreed upon and incorporated into the power contract.

         2.  Globe-Miami  Area.  The District will agree to sell and the Company
will agree to buy the equivalent of all of the electric power  necessary for the
present  and future use and resale  requirements  of the  Company in the area of
Globe and Miami,  Arizona,  and  vicinity,  in excess of any power  output  from
Company's  present  generating  units located in said area.  The electric  power
herein  referred to may  initially be delivered at 25 cycles at Company's  Miami
Diesel  Generating  Station  or such  other  delivery  point or points as may be
agreed upon,  at a price,  time and rate of delivery to be mutually  agreed upon
and  incorporated  into the power  contract.  In the event District shall in the
future find it advisable in fulfilling its  obligations in the area to reduce or
discontinue delivery of 25 cycle power at the Globe-Miami delivery point,
                                       40
<PAGE>
                                                         Article III - Section A


District  may submit to Company a proposal  under  which it will  substitute  60
cycle delivery,  in which event the parties shall proceed to effect arrangements
for such 60 cycle supply in  accordance  with the  provisions  of Paragraph 4 of
this Section A. ln the event such 60 cycle supply shall  substitute in whole for
the 25  cycle  supply  provided  for in this  Paragraph  2, the  power  contract
providing for such 25 cycle supply shall be of no further force and effect.

         3. Winkelman Area. The District will agree to sell and the Company will
agree to buy the equivalent of all the electric power  necessary for the present
and future use and resale requirements of the Company in Winkelman, Arizona, and
vicinity,  at a price,  point,  time and rate of delivery to be mutually  agreed
upon and incorporated into the power contract.

         4. Other Power  Requirements  in the Eastern  Area.  The District  will
agree to sell and the  Company  will agree to buy the  equivalent  of all of the
electric power and energy  necessary for future use and resale  requirements  of
the  Company in  portions  of the  Eastern  area other than those  described  in
Paragraphs 1, 2 and 3 of this Section A, and for  requirements of Company in the
Globe-Miami  area in addition to or in lieu of the initial 25 cycle delivery for
such area  provided  for in  Paragraph 2 of this  Section A, and in reference to
such requirements the power contract shall, among other things,  provide for the
following matters:

         (a)      Proper and  reasonable  notice of such  requirements  shall be
                  given by Company to District.

         (b)      District   shall  submit  a  proposal  to  Company   within  a
                  reasonable  time stating terms,  conditions,  method and price
                  under which it will supply such requirements.

         (c)      If such  proposal  is not  acceptable  to the  Company and the
                  method of supply shall be in dispute between the parties, such
                  dispute as to method of supply shall be sub-
                                       41
<PAGE>
Article III - Section A


                  mitted to  arbitration  and the  decision  of the  arbitration
                  board  shall  be  binding  upon  the  parties  in   subsequent
                  negotiations  relating to price,  terms and conditions for the
                  particular  additional  requirement then under  consideration,
                  subject to the provisions of paragraph (g) hereunder.

         (d)      In determining  the most  economically  sound method of supply
                  for such additional requirements,  the arbitration board shall
                  give proper  consideration,  among other things, to District's
                  responsibilities  for  supplying  the current and future power
                  requirements   of  the  Eastern  area  and  for   providing  a
                  transmission  system  for such  supply,  and  shall  also give
                  consideration  to Company's  responsibilities  in the area and
                  the adequacy and  reliability of the method to be selected and
                  the suitability of the selected method for future power supply
                  to Company at the requested  location or at other locations in
                  the Eastern area.

         (e)      A method of supply  having  been agreed upon by the parties or
                  selected by the arbitration board, the parties shall then seek
                  to agree upon a price and related conditions applicable to the
                  method of supply so agreed upon or selected.

         (f)      If the parties  shall fail to agree on the price to be charged
                  for the supply of such  additional  requirements by the agreed
                  upon or selected method,  either party may demand  arbitration
                  and the arbitration  board will be asked to determine  whether
                  District's  cost is less  than  Company's  cost,  and if so to
                  determine a price for such supply which is midway between such
                  costs of District  and Company.  As used in this  Paragraph 4,
                  "cost" shall include the elements normally used in arriving at
                  cost in the  utility  industry  which  shall  be  particularly
                  provided  in the power  contracts  here  agreed to be  entered
                  into.
                                       42
<PAGE>
                                                         Article III - Section A


         (g)      The  findings  of  the  arbitration   board  or  boards  under
                  subparagraphs  (c) and (f) above  shall be  binding  upon both
                  parties,  provided,  however, that District shall not be bound
                  to use the  identical  method  agreed  upon or selected by the
                  arbitration  board  but may  provide  such  supply by a method
                  superior to the agreed upon or selected method.

         (h)      If the  arbitration  board  determines  that  no  such  price,
                  meeting the criteria of subparagraph  (f) of this Paragraph 4,
                  is possible,  it shall state  Company's  cost found under said
                  subparagraph, and the parties shall then proceed as follows:

                  (1)      Resume negotiations in an effort to reach agreement.

                  (2)      If agreement is not reached within a reasonable time,
                           District may, at its election,  supply service by the
                           agreed upon or selected method or a superior  method,
                           at Company's cost as found by the arbitration  board,
                           or if District does not so supply such service, then

                  (3)      Company shall have the right to obtain service at the
                           requested   location  from  any  other  sources  then
                           available to Company, provided, however, that Company
                           shall  not be  released  from its  obligation  to buy
                           equivalent  power,  such equivalent  power to be sold
                           and  purchased  at  established  prices and points of
                           delivery  as  provided  for in the power  contract or
                           contracts or, if the parties should agree  otherwise,
                           at other prices, points, times and rates of delivery.

         5. Marinette Area. The District will agree to sell and the Company will
agree to buy the equivalent of all of the electric  power  necessary for present
and future use and resale  requirements of Company in an area herein referred to
as the Marinette area of Maricopa County,  Arizona,  and presently served by the
District,  such area or territory being included within the following  described
boundaries:
                                       43
<PAGE>
Article III - Section A


                  Beginning  at the  Northwest  corner of Section 6,  Township 4
         North,  Range 1 East,  Gila and Salt  River Base and  Meridian;  thence
         Easterly  along the North  line of  Township  4 North to the  Northeast
         corner of Section 1, Township 4 North,  Range 1 East;  thence Southerly
         along the East line of Range 1 East to its intersection  with the North
         right-of-way  line of the Arizona  Canal as now  located  (see Note 1);
         thence  Northwesterly  along the said  North  right-of-way  line of the
         Arizona  Canal to a point 660 feet East of the West line of  Section 1,
         Township 3 North,  Range 1 East;  thence  Northerly and parallel to the
         West line of said  Section 1 to a point  more or less in the  center of
         Skunk Creek,  said point being 800 feet South of the North line of said
         Section 1; thence  Southwesterly  on a straight  line to a point on the
         West line of said  Section  1, said  point  being 900 feet South of the
         Northwest corner of said Section l; thence  Southwesterly on a straight
         line to a point  660 feet West and 600 feet  North of the East  quarter
         corner  of  Section  2,  Township  3  North,   Range  1  East;   thence
         Southwesterly  on a straight line to a point 660 feet East and 200 feet
         South of the  center  of said  Section  2;  thence  Southwesterly  on a
         straight  line to a point 800 feet West and 850 feet North of the South
         quarter  corner of said Section 2; thence  Westerly and parallel to the
         South  line of said  Section 2 to a point  1,000  feet East of the West
         line of said Section 2; thence  Southwesterly  on a straight  line to a
         point on the South line of said  Section  2, said point  being 800 feet
         East of the Southwest corner of said Section 2; thence Southwesterly on
         a straight  line to a point on the West line of Section 11,  Township 3
         North,  Range 1 East,  660 feet South of the  Northwest  corner of said
         Section 11; thence Southwesterly on a straight line to a point 660 feet
         East and 350 feet North of the Southwest corner of Section 10, Township
         3 North,  Range 1 East;  thence  Southwesterly  on a straight line to a
         point 660 feet East and 660 feet North of the South  quarter  corner of
         Section 16, Township 3 North,  Range 1 East; thence  Southwesterly on a
         straight  line to the center of Section 21,  Township 3 North,  Range 1
         East; thence  Southwesterly on a straight line to a point 660 feet East
         and 1,320 feet South of the Northwest  corner of Section 28, Township 3
         North,
                                       44
<PAGE>
                                                         Article III - Section A


         Range 1 East; thence  Southwesterly on a straight line to the Southwest
         corner of said Section 28; thence Southwesterly on a straight line to a
         point on the  East-West  mid-section  line of  Section  32,  Township 3
         North, Range 1 East, 1,320 feet West of the East quarter corner of said
         Section 32;  thence  Southerly on a straight line to a point 1,320 feet
         West and  1,320  feet  South of the  Northeast  corner  of  Section  5,
         Township 2 North, Range 1 East; thence Southwesterly on a straight line
         to the center of said Section 5; thence Southerly along the North-South
         mid-section  line to the South quarter corner of said Section 5; thence
         Southwesterly  on a  straight  line to a  point  on the  North  line of
         Section  18,  Township  2 North,  Range 1 East,  1,320 feet West of the
         Northeast corner of said Section 18; thence Southwesterly on a straight
         line to a point on the East-West  mid-section  line of said Section 18,
         said point  being  1,320 feet East of the West  quarter  corner of said
         Section 18;  thence  Southwesterly  on a straight line to the Southwest
         corner of said  Section  18;  thence  Northerly  along the West line of
         Range 1 East to the  Northwest  corner of Section 6,  Township 2 North,
         Range 1 East;  thence Westerly along the South line of Township 3 North
         to the Southwest corner of Section 31, Township 3 North,  Range 1 West;
         thence  Northerly  along the West line of Range 1 West to the Northwest
         corner of Section 6, Township 3 North,  Range 1 West;  thence  Easterly
         along the North  line of  Township 3 North to the  Southwest  corner of
         Section 31, Township 4 North,  Range 1 East; thence Northerly along the
         West  line of Range l East,  to the  Northwest  corner  of  Section  6,
         Township 4 North,  Range 1 East, the point of beginning;  a map or plat
         of which is attached  hereto as Exhibit 12 and by reference made a part
         of this Agreement.

                  (Note 1. Arizona  Canal as now located is being  surveyed  and
                           monumented,  and upon the  completion  of such survey
                           and its  acceptance by the parties hereto such survey
                           shall become apart hereof by reference.)
                                       45
<PAGE>
Article III - Section A


         Such  electric  power shall be sold and  purchased  at prices,  points,
times and rates of delivery to be mutually agreed upon and incorporated into the
power contract.

         6.  Camelback  Area (North of Camelback  Mountain).  The District  will
agree to sell and the  Company  will agree to buy the  equivalent  of all of the
electric power necessary for the present and future use and resale  requirements
of Company in an area herein referred to as the Camelback area, located north of
Camelback Mountain, and presently served by the District, such area or territory
being included within the following boundaries:

                  Beginning at the  Northeast  corner of Section 12,  Township 2
         North,  Range 4 East,  Gila and Salt  River Base and  Meridian;  thence
         Southerly  along the East line of said  Section 12 to its  intersection
         with the North  right-of-way  line of the Arizona  Canal as now located
         (see Note 1); thence Westerly along the said North right-of-way line of
         the Arizona  Canal to its  intersection  with the South line of Section
         14,  Township 2 North,  Range 4 East;  thence  Westerly along the South
         line of said  Section 14 and the South line of Section  15,  Township 2
         North, Range 4 East, to the Southwest corner of said Section 15; thence
         Westerly along the South line of Section 16, Township 2 North,  Range 4
         East, to the Southwest corner of the Southeast quarter of the Southeast
         quarter of said Section 16;  thence  Northerly and parallel to the East
         line of said Section 16 for a distance of 660 feet; thence Westerly and
         parallel  to the South line of said  Section 16, more or less along the
         ridge of  Camelback  Mountain,  for a distance  of 1,980  feet;  thence
         Northwesterly,  more or less along said ridge,  on a straight line to a
         point on the  East-West  mid-section  line of  Section  17,  Township 2
         North,  Range 4 East,  said point  being 660 feet East of the center of
         said Section 17; thence Westerly along the East-West  mid-section  line
         of said Section 17 and along the East-West  mid-section line of Section
         18,  Township 2 North,  Range 4 East, to the center of said Section 18;
         thence Northerly along the North-South mid-section line of said section
         18 and the North-South mid-
                                       46
<PAGE>
                                                         Article III - Section A


         section line of Section 7, Township 2 North, Range 4 East, to the North
         line of said  Section 7; thence  Easterly  along the North line of said
         Section 7 and continuing  Easterly along the North lines of Sections 8,
         9, 10, 11 and 12,  Township  2 North,  Range 4 East,  to the  Northeast
         corner of said  Section  12, the point of  beginning;  a map or plat of
         which is attached  hereto as Exhibit 13 and by reference made a part of
         this Agreement.

                  (Note 1. Arizona  Canal as now located is being  surveyed  and
                           monumented,  and upon the  completion  of such survey
                           and its  acceptance by the parties hereto such survey
                           shall become a part hereof by reference.)

         Such  electric  power shall be sold and  purchased at a price,  points,
times and rates of delivery to be mutually agreed upon and incorporated into the
power contract.

         7.  Continuation  of Sale of 12,000 KW. The  parties  hereto will enter
into a contract  incorporating  therein the present sale of 12,000  kilowatts by
the District to the Company,  which said 12,000 kilowatts is sold to the Company
under and by virtue of the provisions of the Agreement of 1922, the Agreement of
1925, and the Agreement of 1928, all as amended,  and hereinbefore  referred to.
It is agreed that such power contract which will  incorporate  the provisions of
this Paragraph 7 shall have for its purpose the continuation of a sale of 12,000
kilowatts of power by the District to the Company at a price which is the sum of
(1) demand  charge of $1,000 per month,  and (2) an energy  charge  equal to the
energy  equivalent  of 100%  use of the  contract  demand  of  12,000  kilowatts
multiplied by 8 mills ($0.008) per  kilowatt-hour,  and under  substantially the
same  conditions  as are now in effect with  respect to such sale,  such sale to
continue  until June 1, 1961,  at which time the power rate to be charged was to
have been  re-determined  under provisions of the Agreement of 1928, as amended.
Upon such  expiration date of June 1, 1961,  12,000  kilowatts shall be added to
the amount of power to be sold by District to Company as provided for in Section
B
                                       47
<PAGE>
Article III - Sections A & B


of this  Article  III, at the same power rate to be charged,  and under the same
terms and  conditions  as for the sale and  purchase of the 50,000  kilowatts of
power  referred to in Section B of this  Article  III. In the event by reason of
unforeseen   circumstances   such  50,000  kilowatt  agreement  is  not  finally
consummated,  the power  contract  covering the sale and purchase of such 12,000
kilowatts  shall,  instead of expiring on June 1, 1961,  continue  until June 1,
1978, and on June 1, 1961 and at 5 year intervals  thereafter,  either party may
determine  by written  notice given to the other party not less than ninety (90)
days prior  thereto  that the rate to be charged for such 12,000  kilowatts  and
accompanying energy shall be readjusted by mutual agreement or by arbitration as
ma, be provided for in the power  contract here agreed to be entered  into,  and
the rate so  determined  shall be  charged  until and  unless  the rate is again
readjusted in accordance with the terms of this Paragraph 7.

         SECTION B - Additional Power Contract
                     -------------------------

         1. The  District  will agree to sell and the Company  will agree to buy
50,000 kilowatts of power to aid Company in supplying its resale requirements in
the territory  herein allocated to the Company within the boundaries of the Salt
River  Project,  at prices,  points and rates of delivery to be mutually  agreed
upon and incorporated into the power contract.

         2. The delivery of said 50,000  kilowatts of power to the Company shall
commence on April 1, 1957,  or on the date that the  District's  steam  electric
generating plant of a nominal capacity of 100,000 kilowatts, presently scheduled
for completion in 1957, shall be placed in commercial  operation,  but not later
than June 1, 1957,  unless  completion  of said plant be delayed  beyond June 1,
1957, due to causes beyond the District's control.  The parties shall agree that
from  time to time the said  50,000  kilowatt  contract  rate of  demand  may be
increased  at prices,  points and rates of delivery  to be mutually  agreed upon
between the parties.
                                       48
<PAGE>
                                                         Article III - Section C


         SECTION C - General Terms and Conditions
                     ----------------------------

         1. Each of the power contracts provided for in Sections A and B of this
Article III shall,  with the exception of the contract provided for in Paragraph
7 of said Section A, contain the following general provisions:

         (a)      Escalator   clauses  relating  to  labor,   materials,   fuel,
                  insurance,  purchased  power and taxes to the extent that such
                  components are or may be a part of the cost of the power to be
                  sold.  Such  escalation  shall be up or down as changes  shall
                  occur.

         (b)      Usual and ordinary  clauses  concerning  reliability  of power
                  sold by District.

         (c)      A provision  that  contracts  shall be of permanent  duration,
                  subject only to District's  right of  cancellation  upon three
                  years' notice first having been given by District to Company.

         (d)      A  provision  that any portion of the power  purchased  by the
                  Company  which is reduced or cancelled  by the District  shall
                  not be recoverable by District  except through  consent of the
                  Company.

         (e)      A provision  authorizing mutually agreeable changes in matters
                  relating to points, times and rates of delivery of power.

         (f)      A provision  that if this  Agreement  should be  terminated or
                  cease to be effective  due to  circumstances  or events beyond
                  the  control  of the  parties,  the  parties  hereto  agree to
                  negotiate  and  to  attempt  to  reach  agreement  as to  such
                  changes, if any, in the power contracts as are necessitated by
                  such event,  and that if this Agreement shall be terminated by
                  the Company pursuant to Paragraph 5 of Section A of Article II
                  hereof  due to a  voluntary  violation  by the  District,  the
                  Company may terminate any or all the power contracts  provided
                  for in  Paragraphs 1, 2, 3, 4, 5 and 6 of Section A of Article
                  III hereto upon five years' advance notice.
                                       49
<PAGE>
Article III - Section C


         2. Certain of the power  contracts  provided for in Sections A and B of
this Article III shall contain additional provisions as follows:

         (a)      A provision in the power contract or contracts provided for in
                  Paragraphs 5, 6, and 7 of Section A and Paragraph 1 of Section
                  B of this Article III that the  District  shall have the right
                  to reduce  the  amount of power  agreed to be sold  thereunder
                  upon three  years'  notice first having been given by District
                  to Company; provided, that reduction of amounts of power to be
                  sold to Company pursuant to the contracts provided for in said
                  Paragraphs 5 and 6 shall not affect the District's  obligation
                  to sell and the Company's  obligation to buy the total use and
                  resale  requirements  of Company in the areas  covered by such
                  contracts, less the amount of any such reduction.

         (b)      A provision  that the prices for power and energy  agreed upon
                  in the power  contract or contracts  covering  the  deliveries
                  provided for in  Paragraphs  1, 2, 3, 5 and 6 of Section A and
                  in Section B of this  Article  III,  shall be in effect  until
                  June  1,  1987,  subject  to  the  escalation  and  adjustment
                  provisions included in said contract or contracts.  On June 1,
                  1987,  and at  thirty  year  intervals  thereafter,  the power
                  contract or  contracts  referred to in this  subparagraph  (b)
                  shall  provide for  reopening  for review of prices,  with the
                  basis  for such  review  being  specifically  set  forth,  but
                  generally  limited to bringing  prices into line with changing
                  conditions,  power  resources  and power  market  prices.  The
                  parties  shall agree to  arbitration  of such prices if mutual
                  agreement cannot be reached during such review.

         (c)      A provision  that the prices for power and energy  agreed upon
                  in  the  power  contract  or  contracts  covering   deliveries
                  provided  for in Paragraph 4 of Section A of this Article III,
                  shall  continue  and be in effect as set out in the  contracts
                  covering such deliveries which are hereinafter entered into.
                                       50
<PAGE>
                                                 Article III - Sections C, D & E


         (d)      A provision in the contract or contracts  covering the Eastern
                  area that power to be  supplied  by District to Company at any
                  point of  delivery in such area shall be for use and resale by
                  the  Company  only at and in the  vicinity  of  such  delivery
                  point.  The term  "Vicinity" as here used means an area within
                  the  Eastern  area which is or can be served by the Company by
                  means of an electric  distribution  system employing  electric
                  circuits of a voltage not higher than 38 kilovolts.

         SECTION D - Power Coordination Arrangements
                     -------------------------------

         In addition to the contract or contracts provided for in Sections A and
B of this Article III, the parties will enter into contractual arrangements,  on
terms and conditions and for periods to be mutually agreed upon, with respect to
the following matters:

         1. Any needed wheeling arrangements relating to the use of transmission
and distribution  facilities of either party by the other party or for supply of
electric service to customers of the other party.

         2.   Provisions  for  mutual  standby  and  for  reciprocal   emergency
assistance.

         3.  Provisions  for  economy  energy  interchange  and  interchange  of
spinning reserve capacity.

         4.  Provisions  for  interchange  of power  received by the  respective
parties  from Parker Dam, to replace  provisions  of a similar  character  in an
agreement dated March 31, 1939,  between the parties which is to be cancelled as
provided in Article IV hereof.

         SECTION E - Differences and Inconsistencies
         -------------------------------------------

         In the event any differences or inconsistencies shall exist between the
power  contract or contracts as executed and the provisions of this Article III,
the power contract or contracts shall govern.
                                       51
<PAGE>
Article III - Section F
Article IV
Article V


         SECTION F - Effect of Cancellation of Power Contracts
                     -----------------------------------------

         This   Agreement   shall  continue  and  remain  in  force  and  effect
notwithstanding  any  reduction  of the  power  to be sold by the  District  and
purchased by the Company,  or the  cancellation or  termination,  for any reason
whatsoever,  of any or all of the power  contracts mace pursuant to this Article
III.

                                   ARTICLE IV
                                   ----------

                            CANCELLATION OF EXISTING
                            ------------------------
                                   AGREEMENTS
                                   ----------

         1. Territorial  Agreements.  This Agreement,  upon becoming  effective,
shall replace and effect a cancellation of all existing  territorial  agreements
or understandings, whether formal or informal, between the parties hereto.

         2. Power Contracts.  When this Agreement and the power contracts herein
referred  to in  Sections A and D of Article  III have  become  binding  and all
conditions  to which the  effectiveness  of this  Agreement is subject have been
satisfied,  all previously  existing power contracts  between the parties hereto
and their respective predecessors in interest shall be deemed cancelled.

                                    ARTICLE V
                                    ---------
                          THIRD PARTIES NOT TO BENEFIT
                          ----------------------------

         Nothing  contained in this Agreement  shall be construed as authorizing
or giving  rise to any right or cause of action on the part of any  person not a
party hereto against either or both of the parties hereto.
                                       52
<PAGE>
                                                                      Article VI


                                   ARTICLE VI
                                   ----------

                        EXISTING CONTRACTS FOR SERVICE OF
                        ---------------------------------
                                ELECTRICAL ENERGY
                                -----------------

         As of the date of transfer of  facilities  from one party hereto to the
other,  as provided in Section E of Article II, the  transferring  party  shall,
where lawfully possible,  cancel any existing electric service contracts between
it and customers  served by such facilities and allocated to such other party by
virtue of the provisions of this Agreement.

         In the event any of such  contracts are not lawfully  cancellable as of
such date and the customer  being served  thereunder  refuses to consent to such
cancellation,  it is agreed that such  contract  or  contracts,  where  lawfully
assignable,  shall be  deemed  assigned  to the party  having  the right by this
Agreement to provide service to the particular customer.

         Nothing  herein  contained  shall  require  the breach of any  existing
binding and irrevocable  electric  service contract between any party hereto and
any other  person or  persons,  and any such  contract  or  contracts  which are
neither  cancellable nor assignable shall continue to be performed,  and service
to the customer  thereunder shall be rendered by the party having  contracted to
serve such  customer  without  such  service  constituting  a violation  of this
Agreement, until the expiration of such contract or contracts, subject, however,
to the provisions of Paragraph 1 of Article VIII hereof;  and provided that upon
the  expiration of such contract or contracts,  or at the earliest date at which
the said party hereto may cancel, annul or terminate said contract or contracts,
the party which has been serving such  customers,  pursuant to such  contract or
contracts, shall declare such contract or contracts terminated and shall refrain
from serving such customers with electric power and energy.
                                       53
<PAGE>
Article VII
Article VIII


                                   ARTICLE VII
                                   -----------

                     INDEMNITY AGAINST CUSTOMERS' CLAIMS AND
                     ---------------------------------------
                    COOPERATION IN DEFENDING VALIDITY OF THIS
                    -----------------------------------------
                          AGREEMENT AND POWER CONTRACTS
                          -----------------------------

         The party  hereto,  which,  as a result of this  Agreement,  undertakes
rendition of electric service to any particular  customer formerly served by the
other party, shall indemnify and hold the other party harmless against any loss,
liability  or  damage  resulting  from such  transfer  of the  electric  service
tendered to such customer.

         It is further  agreed that in the event any third  person shall seek to
invalidate  this  Agreement or the power  contracts  herein agreed to be entered
into, or shall seek to compel a sale, donation or delivery of electric power and
energy by either  party  hereto  which  would  constitute  a  violation  of this
Agreement,  or if the validity of this Agreement or the power  contracts then in
effect  shall  in  any  manner  be  brought  into  issue  in any  litigation  or
proceeding,  then and in such event,  prompt notification of such event shall be
given by the party first having  knowledge of such event to the other party, and
the  parties  hereto  shall  cooperate  in  defending  against  such  action  or
proceeding  and in upholding  the validity of this  Agreement and the said power
contracts.

                                  ARTICLE VIII
                                  ------------

                                 STREET LIGHTING
                                 ---------------

         1. It is  recognized  that the Company has entered into an agreement to
provide street  lighting for the City of Phoenix,  Arizona,  and that certain of
the streets  within the City of Phoenix  which  require and will require  street
lights are within the  territory  allocated to the  District.  It is agreed that
until such time as a street  lighting  contract  is  entered  into  between  the
District  and the  City of  Phoenix  in  regard  to  streets  lying  within  the
District's territory, or until other arrange-
                                       54
<PAGE>
                                                                    Article VIII
                                                                    Article IX


ments are agreed upon by the parties  hereto in regard to lighting such streets,
such  streets  shall,  upon City's  request to the Company for  lighting of such
streets,  be lighted by the  District for the account of the Company at the same
rate and  under the same  terms  and  conditions  provided  for in that  certain
contract  dated  August 21,  1951,  between  the City of Phoenix and the Central
Arizona Light and Power Company relating to City of Phoenix street lighting.

         2.  Notwithstanding  the provisions of Paragraph 10, Section D, Article
II of this  Agreement,  relating to electric  service on or near the territorial
boundaries  herein  established,  each of the parties  hereto shall  provide all
street lighting service in their respective territories; provided, however, that
where the territorial  boundaries herein  established are coincident with public
streets or  portions of public  streets,  electric  service for street  lighting
shall be rendered by the party hereto whose  territory lies on the North or East
side of such street or portion thereof; and provided further, that if in unusual
circumstances  the foregoing  provision  does not provide a logical and economic
division  of such  service,  the  parties  shall  agree as to which of them will
render street lighting service along such street or portion thereof.

                                   ARTICLE IX
                                   ----------

                             MISCELLANEOUS COVENANTS
                             -----------------------

         1. The parties hereto represent and covenant, the Company for and as to
itself,  and the District for and as to itself,  that they are validly  existing
entities under the applicable  laws of Arizona and that they have full authority
under the laws of Arizona and of the United States to enter into this  Agreement
and the power contracts  herein referred to, subject only to the satisfaction of
the conditions set out in this Agreement and the said power contracts.

         2.  The  Company  covenants  and  represents  that it is a  corporation
validly organized and existing under the laws of the State of Arizona,  and that
it will from time to time make all such filings and take
                                       55
<PAGE>
Article IX
Article X


all such steps as may be  necessary  under said laws to continue  its  corporate
existence so long as it is obligated to fulfill the terms of this  Agreement and
the power contracts made pursuant thereto.

         3. The District  covenants and  represents  that it is an  Agricultural
Improvement  District validly organized and existing under the laws of the State
of Arizona,  and that it will take such steps as may be  necessary  from time to
time to continue  its  existence so long as it is obligated to fulfill the terms
of this Agreement and the power contracts made pursuant thereto.

         4. It is  understood  that both parties  shall be entitled from time to
time to  apply  for and  receive  any  certificates,  franchises  or  regulatory
approvals or amendments  thereof  necessary or appropriate  for the rendition of
electric service not in conflict with the terms of this Agreement.

                                    ARTICLE X
                                    ---------
                       TRANSFERS, MERGERS AND ASSIGNMENTS
                       ----------------------------------

         1. Neither party shall,  without the consent of the other party hereto,
voluntarily  donate,  sell, lease,  transfer or dispose of any operating part or
unit of its electric generation,  transmission or distribution system to a third
person  for  use  in the  production,  sale,  transmission  or  distribution  of
electricity,  except  where use of the part or unit to be sold has been or is to
be  discontinued  and it is to be removed from the  location  where it was used,
unless such third person shall be or become bound to the other party hereto:

         (a)      to observe and abide by the  restrictions  as to territory and
                  sales of electric  power and energy  imposed by the provisions
                  of  this  Agreement  upon  the  party  hereto  effecting  such
                  assignment, transfer or disposition;

         (b)      to  pay  liquidated   damages  and  be  subject  to  the  same
                  additional remedies which would be imposed by this Agreement
                                       56
<PAGE>
                                                                       Article X


                  on  the  party   effecting   such   assignment,   transfer  or
                  disposition, in the event of violation of such territorial and
                  sales provisions; and

         (c)      not to sell, lease,  donate,  transfer or dispose of such part
                  or unit except upon  compliance  with the  provisions  of this
                  Paragraph 1, and to bind its successors and assigns in turn to
                  observe the terms,  conditions and  obligations  hereof and to
                  impose on their  successors  and  assigns  the  obligation  to
                  comply with the provisions of this Paragraph 1.

         Nothing in this  Paragraph 1 shall prevent either party from selling or
transferring  to the United States or the Arizona Power Authority any facilities
which are now or may be  installed  to  connect  with the  present  transmission
system of the Parker-Davis Project United States Department of Interior,  Bureau
of Reclamation - where:

         (a)      Such facilities are of the type ordinarily owned by either the
                  Bureau or the Authority, and

         (b)      The selling party has previously  financed them in whole or in
                  part for the purpose of facilitating receipt of service, and

         (c)      Such  sale will in no way  alter  the  service  area of either
                  party.

         Nothing herein contained shell prevent either party or any successor or
assign thereof from  transferring  property to another as security pursuant to a
mortgage or deed of trust.

         2. The parties  hereto  further agree that neither the District nor the
Company  will  voluntarily   sell,   lease,   transfer  or  dispose  of  all  or
substantially  all of their electric  generating,  transmission and distribution
system  to any  third  person  or merge or  consolidate  with or into any  third
person, unless there is included in the instrument or instruments of conveyance,
assignment,  transfer or disposition, or into the the agreement or instrument of
merger or  consolidation,  a  provision  binding  such third  person to perform,
observe and carry out the coven-
                                       57
<PAGE>
Article X
Article XI


ants,  provisions,  terms  and  conditions  of this  Agreement  and of the power
contracts  hereinabove  referred  to and then to  effect,  and  binding  all the
successors  and assigns of such third  person in turn to observe the  conditions
hereof and to impose on such  successors  and assigns the  obligations to comply
with the provisions of this Paragraph 2.

         3.  If  all or  substantially  all of  the  properties,  facilities  or
business of either party hereto, its successors or assigns, shall be transferred
or assigned to or vested in another  person by  operation of law or by any other
means  beyond the control of such party,  the other party  hereto shall have the
option of cancelling and terminating this Agreement and the power contracts made
pursuant  hereto which are then in effect,  unless  within sixty (60) days after
such transfer of properties, facilities or business an assignment or transfer of
this Agreement to the transferee of such properties,  facilities or business has
been effected and such  transferee has undertaken to perform,  observe and carry
out the terms  and  conditions  of this  Agreement  and of the  power  contracts
entered into as provided in this Agreement and then in effect and has undertaken
to bind all its  successors  and  assigns,  in turn,  to observe the  conditions
hereof and to impose on such  successors  and assigns the  obligation  to comply
with the provisions of this Agreement.

         4. Subject to the foregoing provisions and restrictions, this Agreement
shall be binding upon,  and inure to the benefit of the parties hereto and their
respective successors and assigns.

                                   ARTICLE XI
                                   ----------

                    RESTRICTIONS ON TERMINATION OF AGREEMENT
                    ----------------------------------------

         Other than as provided to Paragraph 5, Section A of Article II, neither
party shall  declare or claim this  contract  terminated  because of a violation
thereof.
                                       58
<PAGE>
                                                                    Article XII
                                                                    Article XIII
                                                                    Article XIV


                                   ARTICLE XII
                                   -----------

                                     NOTICES
                                     -------

         Unless the party addressed shall otherwise  consent thereto in writing,
each notice or change of address given  pursuant to this  Agreement  shall be in
writing sent by registered mail, postage prepaid and addressed:

         (a)      if to the Company,  to "The Secretary,  Arizona Public Service
                  Company,  Post Office Box 2591, Phoenix,  Arizona", or at such
                  other  address as Company  shall  have last  furnished  to the
                  District for that purpose; or

         (b)      if  to  District,  to  "The  Secretary,   Salt  River  Project
                  Agricultural  Improvement and Power District,  Post Office Box
                  1980, Phoenix,  Arizona", or at such other address as District
                  shall have last  furnished  in  writing  to  Company  for that
                  purpose.

                                  ARTICLE XIII
                                  ------------

                              CAPTIONS AND HEADINGS
                              ---------------------

         The captions or headings set out in this  Agreement  have been inserted
merely to facilitate reference and shall have no bearing upon the interpretation
of the provisions of this Agreement.

                                   ARTICLE XIV
                                   -----------

                                     WAIVERS
                                     -------

       Any waiver by a party of its rights with  respect to a violation  of this
Agreement,  or with respect to any other matter arising in connection  with this
Agreement,  shall not be deemed to be a waiver  with  respect to any  subsequent
violation or matter. No delay, short of the statutory period of limitations,  in
asserting  or  enforcing  any right  hereunder  shall be deemed a waiver of such
right.
                                       59
<PAGE>
                                   ARTICLE XV
                                   ----------

                                    APPROVALS
                                    ---------

         This Agreement shall not become effective unless, within 180 days after
this  Agreement  and the power  contracts  referred  to in  Sections  A and D of
Article III have been executed,  the following  approvals have been obtained and
the following conditions have been fully complied with:

         1.  Secretary of Interior.  The  unqualified  written  approval of this
Agreement and said power  contracts  shall have been obtained from the Secretary
of the Interior of the United States of America.

         2. Federal Power Commission. An order shall have been obtained from the
Federal Power Commission  approving  without  qualification  any feature of this
Agreement as to which such  approval is required;  and further,  within such 180
days the power contracts  referred to in Section D of Article III have been duly
filed and have become  effective  under the rules and regulations of the Federal
Power Commission.

         3. Arizona  Corporation  Commission.  An order approving this Agreement
without  qualification  shall have been  obtained  from the Arizona  Corporation
Commission.

         IN WITNESS  WHEREOF,  the  respective  parties  hereto have caused this
instrument to be executed on their behalf by their duly authorized  officers and
their Corporate Seals to be hereunto  affixed,  all as of the day and year first
above written,

                                            SALT RIVER PROJECT AGRICULTURAL
                                            IMPROVEMENT AND POWER DISTRICT


                                            By        VICTOR I. CORBELL
                                              ----------------------------------
ATTEST:                                                   President

     A.L. MONETTE
- -----------------------------
      Secretary
                                       60
<PAGE>
A P P R O V E D :
Jennings, Strouss, Salmon & Trask


By         J.A. RIGGINS, JR.
  ---------------------------------
             Legal Counsel
Salt River Project Agricultural
Improvement and Power District



                                            ARIZONA PUBLIC SERVICE COMPANY


                                            By       WALTER T. LUCKING
                                              ----------------------------------
                                                         President
ATTEST:

            [ILLEGIBLE]
- -----------------------------------
             Secretary



A P P R O V E D :
Snell & Wilmer

By       NICHOLAS H. POWELL
  ---------------------------------
           Legal Counsel
Arizona Public Service Company
                                       61
<PAGE>
STATE OF ARIZONA                    )
                                    ) ss.
County of Maricopa                  )

         On this the 20th day of September,  1955, before me, Ina McWilliam, the
undersigned  officer,  personally  appeared Victor I. Corbell,  who acknowledged
himself to be the President of the Salt River Project  Agricultural  Improvement
and Power District,  a political  subdivision of the State of Arizona,  and that
he,  as  such  President  being  authorized  so to do,  executed  the  foregoing
instrument for the purposes therein  contained,  by signing the name of the Salt
River  Project  Agricultural  Improvement  and  Power  District  by  himself  as
President.

         IN WITNESS WHEREOF, I hereunto set my hand and official seal.


                                                     INA MCWILLIAM
                                        ---------------------------------------
                                                     Notary Public

My commission expires:
   August 21, 1959.

STATE OF ARIZONA                    )
                                    ) ss.
County of Maricopa                  )

         On this the 20th day of September,  1995,  before me, Mabel L. Spencer,
undersigned  officer,  personally  appeared Walter T. Lucking,  who acknowledged
himself to be the President of Arizona  Public Service  Company,  a corporation,
and that he as such President being  authorized so to do, executed the foregoing
instrument  for the  purposes  therein  contained,  by  signing  the name of the
corporation by himself as President.

         IN WITNESS WHEREOF, I hereunto set my hand and official seal.

                                                    MABEL L. SPENCER
                                        ---------------------------------------
                                                     Notary Public

My commission expires:
    June 29, 1959.
                                       62
<PAGE>
                                   CERTIFICATE
                                   -----------

       The  undersigned,  A. L.  Monette,  Secretary  of the Salt River  Project
Agricultural  Improvement  and Power  District  thereinafter  referred to as the
"District"), hereby certifies that the following is a true and correct copy of a
resolution  duly  adopted at a special  meeting of the Board of Directors of the
District  duly held on  September  12,  1955,  in the office of the  District at
Phoenix, Arizona:

                  WHEREAS,  copies of the proposed  Agreement,  dated August 31,
       1955, between Arizona Public Service Company (hereinafter  referred to as
       the "Company") and the Salt River Project  Agricultural  Improvement  and
       Power  District  (hereinafter  referred to as the  "District")  have been
       submitted to this meeting, and

                  WHEREAS,  the Board of Directors of the District deem it to be
       in the best  interest of the District  that it enter into and perform the
       said Agreement,

                  NOW, THEREFORE, BE IT RESOLVED, that the Board of Directors of
       the District  hereby  approves the proposed  Agreement,  dated August 31,
       1955, between the District and Arizona Public Service Company, and

                  BE IT FURTHER  RESOLVED,  that the President and the Secretary
       of the District are hereby  authorized  and directed for and on behalf of
       the District to make,  execute and deliver the said Agreement in the form
       submitted  to and  approved by the Board of  Directors of the District at
       this  meeting,  subject only to such changes  therein not  affecting  the
       substance  thereof as the  President  and  Secretary  of the District may
       approve,  their  execution of the Agreement to be conclusive  evidence of
       their approval of any such changes.

       IN WITNESS WHEREOF, the undersigned has hereunto set his hand and affixed
the seal of the District this 20th day of September, 1955.


                                                    A.L. MONETTE
                                        ----------------------------------------
                                            A. L. Monette, Secretary
                                            Salt River Project Agricultural
                                            Improvement and Power District
                                       63
<PAGE>
                             SUPPLEMENTAL AGREEMENT
                             ----------------------

         THIS SUPPLEMENTAL AGREEMENT, made by and between ARIZONA PUBLIC SERVICE
COMPANY  (APS),  and SALT  RIVER  PROJECT  AGRICULTURAL  IMPROVEMENT  AND  POWER
DISTRICT (SRP);

         W I T N E S S E T H:
         - - - - - - - - - - 

         WHEREAS,  the parties  hereto  heretofore  entered into an Agreement of
August 31, 1955,  providing certain  restrictions in regard to areas,  customers
and types of  electric  load to be served by each,  including  certain  sales at
wholesale;

         WHEREAS,  heretofore  in a  number  of  situations  involving  sales or
deliveries at wholesale of electric  power and energy,  consents have been given
by one party to the other in regard to such wholesale sales;

         WHEREAS, it is deemed advisable to adopt this SUPPLEMENTAL AGREEMENT to
eliminate any need for such consents in the future,

         NOW, THEREFORE, BE IT AGREED:

         No sale, donation or delivery of electric power and energy at wholesale
by either party shall be deemed to be a violation of the Agreement of August 31,
1955.

         IN  WITNESS   WHEREOF,   the   respective   parties  have  caused  this
Supplemental  Agreement to be executed on their behalf this 1st day of December,
1972.

                                        ARIZONA PUBLIC SERVICE COMPANY


                                        By       W. P. REILLY
                                          ----------------------------
                                                            President

ATTEST:

         WM. T. QUINSLER
- ----------------------------------
                    Secretary

                                        SALT RIVER PROJECT AGRICULTURAL
                                        IMPROVEMENT AND POWER DISTRICT


                                        By:      KARL F. ABEL
                                           ---------------------------
                                                            President

ATTEST:


- ----------------------------------
                    Secretary
<PAGE>
STATE OF ARIZONA           )
                           )  ss
County of Maricopa         )

         On this,  the 1st day of  December,  1972,  before me, the  undersigned
officer,  personally  appeared W. P. REILLY, who acknowledged  himself to be the
President of ARIZONA PUBLIC SERVICE COMPANY, a corporation,  and that he as such
President,  being authorized so to do, executed the foregoing instrument for the
purposes therein contained, by signing the name of the corporation by himself as
President.

         IN WITNESS WHEREOF, I hereunto set my hand and official seal.


                                                MARILYN K. HENDLEY
                                          ----------------------------
                                                   Notary Public

My commission expires:

My Commission Expires June 14, 1975
- -----------------------------------

STATE OF ARIZONA           )
                           )  ss
County of Maricopa         )

         On this,  the 1st day of  December,  1972,  before me, the  undersigned
officer,  personally  appeared KARL F. ABEL, who acknowledged  himself to be the
President of SALT RIVER PROJECT  AGRICULTURAL  IMPROVEMENT AND POWER DISTRICT, a
political  subdivision of the State of Arizona,  and that he, as such President,
being  authorized so to do,  executed the foregoing  instrument for the purposes
therein  contained  by signing the name of the SALT RIVER  PROJECT  AGRICULTURAL
IMPROVEMENT AND POWER DISTRICT by himself as President.

         IN WITNESS WHEREOF, I hereunto set my hand and official seal.


                                                 DON E. SMITH
                                          ----------------------------
                                                 Notary Public

My commission expires:

My Commission Expires May 3, 1975
- ---------------------------------
                                       -2-
<PAGE>
                          CERTIFIED COPY OF RESOLUTION
                          ----------------------------


         I, WM. T. QUINSLER, Secretary and Assistant Treasurer of ARIZONA PUBLIC
SERVICE COMPANY,  an Arizona  corporation,  HEREBY CERTIFY that, at a meeting of
the Board of Directors of said  Company,  duly convened and held on November 21,
1972,  at which a quorum  was  present  and  acting  throughout,  the  following
resolution was adopted and is now in full force and effect:

                  WHEREAS,  Arizona  Public Service  Company  (Company) and Salt
         River Project Agricultural  Improvement and Power District (Salt River)
         have  heretofore  entered into an  Agreement of August 31, 1955,  which
         contains  certain   restrictions  on  wholesale  sales,   donations  or
         deliveries of electric power and energy by either; and

                  WHEREAS,   it  is  deemed  advisable  at  this  time  that  an
         appropriate supplemental agreement or amendment be entered into between
         the Company and Salt River so as to remove any such restrictions;

                  NOW, THEREFORE,  BE IT RESOLVED that the Company enter into an
         appropriate Supplemental Agreement amending the Agreement of August 31,
         1955  between  the  Company  and the Sale  River  Project  Agricultural
         Improvement  and Power  District  so as to remove all  restrictions  on
         sales,  donations  or  deliveries  of  electric  power  and  energy  at
         wholesale by either; and

                  FURTHER RESOLVED,  that the President of the Company,  William
         P. Reilly,  be and he hereby is  authorized  and  directed,  for and on
         behalf of the  Company,  to sign,  execute  and  deliver  such  written
         agreement,  supplement or other document or instrument and to make such
         filings or take such steps as may be deemed by him to be appropriate to
         effectuate the purposes of this resolution.

         IN WITNESS  WHEREOF,  I have  hereunto set my hand and the seal of said
corporation this 28th day of November, 1972.

                                                 WM. T. QUINSLER
                                          --------------------------------------
                                          Secretary and Assistant Treasurer
<PAGE>
                                    AGREEMENT
                                    ---------


         IT IS HEREBY AGREED between ARIZONA PUBLIC SERVICE COMPANY and the SALT
RIVER PROJECT AGRICULTURAL  IMPROVEMENT AND POWER DISTRICT that the Agreement of
August 31, 1955 between them, and the Power Coordination  Agreement of September
15, 1955 between  them,  became  effective on March 13, 1956,  on which date the
Arizona Corporation  Commission issued an order which satisfied the requirements
of  paragraph  3 of  Article  XV of  the  Agreement  of  August  31,  1955,  the
requirements of paragraphs 1 and 2 of said Article XV, relating to the Secretary
of  the  Interior  and  the  Federal  Power  Commission,   respectively,  having
theretofore been satisfied.

         Dated:  May 15th, 1957.

                                        ARIZONA PUBLIC SERVICE COMPANY



                                        By
                                          ----------------------------
                                                  Vice President

ATTEST:



- ----------------------------
    Assistant Secretary


                                        SALT RIVER PROJECT AGRICULTURAL
                                        IMPROVEMENT AND POWER DISTRICT


                                        By
                                          ----------------------------
                                                  President

ATTEST:


- ----------------------------
          Secretary
<PAGE>
                                    Exhibit 1


         In  accordance  with  Item  304 of  Regulation  S-T  of the  Securities
Exchange  Act of 1934,  Exhibit 1 to Exhibit  10.1  contained  in the  Company's
Quarterly  Report on Form 10-Q for the fiscal  quarter ended March 31, 1998 is a
map interpreting metes and bounds description of territorial  boundary set forth
in Article II,  Section B,  Paragraph 1, in contract dated ________ 1955 between
the Salt River  Project  Agricultural  Improvement  and Power  District  and the
Arizona Public Service Company.
<PAGE>
                                    Exhibit 2


         In  accordance  with  Item  304 of  Regulation  S-T  of the  Securities
Exchange  Act of 1934,  Exhibit 2 to Exhibit  10.1  contained  in the  Company's
Quarterly  Report on Form 10-Q for the fiscal  quarter ended March 31, 1998 is a
map interpreting metes and bounds description of territorial  boundary set forth
in Article II,  Section B,  Paragraph  ____,  in contract  dated  ________  1955
between the Salt River Project  Agricultural  Improvement and Power District and
the Arizona Public Service Company.
<PAGE>
                                    Exhibit 3


         In  accordance  with  Item  304 of  Regulation  S-T  of the  Securities
Exchange  Act of 1934,  Exhibit 3 to Exhibit  10.1  contained  in the  Company's
Quarterly  Report on Form 10-Q for the fiscal  quarter ended March 31, 1998 is a
map interpreting metes and bounds description of territorial  boundary set forth
in Article II, Section C, Paragraph  1(a) (Phoenix,  Arizona area),  in contract
dated August 31, 1955 between the Salt River  Project  Agricultural  Improvement
and Power District and the Arizona Public Service Company.
<PAGE>
                                    Exhibit 4


         In  accordance  with  Item  304 of  Regulation  S-T  of the  Securities
Exchange  Act of 1934,  Exhibit 4 to Exhibit  10.1  contained  in the  Company's
Quarterly  Report on Form 10-Q for the fiscal  quarter ended March 31, 1998 is a
map interpreting metes and bounds description of territorial  boundary set forth
in Article II, Section C, Paragraph  1(b)(1)  (Chandler area), in contract dated
August 31, 1955  between the Salt River  Project  Agricultural  Improvement  and
Power District and the Arizona Public Service Company.
<PAGE>
                                    Exhibit 5


         In  accordance  with  Item  304 of  Regulation  S-T  of the  Securities
Exchange  Act of 1934,  Exhibit 5 to Exhibit  10.1  contained  in the  Company's
Quarterly  Report on Form 10-Q for the fiscal  quarter ended March 31, 1998 is a
map interpreting metes and bounds description of territorial  boundary set forth
in Article II, Section C, Paragraph  1(b)(2)  (Gilbert  area), in contract dated
August 31, 1955  between the Salt River  Project  Agricultural  Improvement  and
Power District and the Arizona Public Service Company.
<PAGE>
                                    Exhibit 6


         In  accordance  with  Item  304 of  Regulation  S-T  of the  Securities
Exchange  Act of 1934,  Exhibit 6 to Exhibit  10.1  contained  in the  Company's
Quarterly  Report on Form 10-Q for the fiscal  quarter ended March 31, 1998 is a
map interpreting metes and bounds description of territorial  boundary set forth
in Article II, Section C, Paragraph  1(b)(3)  (Glendale area), in contract dated
August 31, 1955  between the Salt River  Project  Agricultural  Improvement  and
Power District and the Arizona Public Service Company.
<PAGE>
                                    Exhibit 7


         In  accordance  with  Item  304 of  Regulation  S-T  of the  Securities
Exchange  Act of 1934,  Exhibit 7 to Exhibit  10.1  contained  in the  Company's
Quarterly  Report on Form 10-Q for the fiscal  quarter ended March 31, 1998 is a
map interpreting metes and bounds description of territorial  boundary set forth
in Article II, Section C,  Paragraph  1(b)(4)  (Peoria area),  in contract dated
August 31, 1955  between the Salt River  Project  Agricultural  Improvement  and
Power District and the Arizona Public Service Company.
<PAGE>
                                    Exhibit 8


         In  accordance  with  Item  304 of  Regulation  S-T  of the  Securities
Exchange  Act of 1934,  Exhibit 8 to Exhibit  10.1  contained  in the  Company's
Quarterly  Report on Form 10-Q for the fiscal  quarter ended March 31, 1998 is a
map interpreting metes and bounds description of territorial  boundary set forth
in Article II, Section C, Paragraph 1(b)(5) (Scottsdale area), in contract dated
August 31, 1955  between the Salt River  Project  Agricultural  Improvement  and
Power District and the Arizona Public Service Company.
<PAGE>
                                    Exhibit 9


         In  accordance  with  Item  304 of  Regulation  S-T  of the  Securities
Exchange  Act of 1934,  Exhibit 9 to Exhibit  10.1  contained  in the  Company's
Quarterly  Report on Form 10-Q for the fiscal  quarter ended March 31, 1998 is a
map interpreting metes and bounds description of territorial  boundary set forth
in Article II,  Section C,  Paragraph  1(b)(6)  (Tempe area),  in contract dated
August 31, 1955  between the Salt River  Project  Agricultural  Improvement  and
Power District and the Arizona Public Service Company.
<PAGE>
                                   Exhibit 10


         In  accordance  with  Item  304 of  Regulation  S-T  of the  Securities
Exchange  Act of 1934,  Exhibit 10 to Exhibit 10.1  contained  in the  Company's
Quarterly  Report on Form 10-Q for the fiscal  quarter ended March 31, 1998 is a
map interpreting metes and bounds description of territorial  boundary set forth
in Article II, Section C,  Paragraph  1(c)(1)  (Borden Plant area),  in contract
dated August 31, 1955 between the Salt River  Project  Agricultural  Improvement
and Power District and the Arizona Public Service Company.
<PAGE>
                                   Exhibit 11


         In  accordance  with  Item  304 of  Regulation  S-T  of the  Securities
Exchange  Act of 1934,  Exhibit 11 to Exhibit 10.1  contained  in the  Company's
Quarterly  Report on Form 10-Q for the fiscal  quarter ended March 31, 1998 is a
map interpreting metes and bounds description of territorial  boundary set forth
in Article II, Section C, Paragraph  1(c)(2),  in contract dated August 31, 1955
between the Salt River Project  Agricultural  Improvement and Power District and
the Arizona Public Service Company.
<PAGE>
                                   Exhibit 12


         In  accordance  with  Item  304 of  Regulation  S-T  of the  Securities
Exchange  Act of 1934,  Exhibit 12 to Exhibit 10.1  contained  in the  Company's
Quarterly  Report on Form 10-Q for the fiscal  quarter ended March 31, 1998 is a
map interpreting metes and bounds description of territorial  boundary set forth
in Article  III,  Section A,  Paragraph  5, in  contract  dated  August 31, 1955
between the Salt River Project  Agricultural  Improvement and Power District and
the Arizona Public Service Company.
<PAGE>
                                   Exhibit 13


         In  accordance  with  Item  304 of  Regulation  S-T  of the  Securities
Exchange  Act of 1934,  Exhibit 13 to Exhibit 10.1  contained  in the  Company's
Quarterly  Report on Form 10-Q for the fiscal  quarter ended March 31, 1998 is a
map interpreting metes and bounds description of territorial  boundary set forth
in Article  III,  Section A,  Paragraph 6  (Camelback  area,  north of Camelback
Mountain),  in contract  dated  August 31, 1955  between the Salt River  Project
Agricultural  Improvement  and Power  District  and the Arizona  Public  Service
Company.

                          POWER COORDINATION AGREEMENT

                                       of

                               SEPTEMBER 15, 1955


                                     between


                               SALT RIVER PROJECT

                            AGRICULTURAL IMPROVEMENT

                               AND POWER DISTRICT



                                       and



                             ARIZONA PUBLIC SERVICE

                                     COMPANY
<PAGE>












                          POWER COORDINATION AGREEMENT
<PAGE>
                                TABLE OF CONTENTS

                                                                            Page

                  Explanatory Recitals                                        1

ARTICLE I     -   Cooperation in Development and Operation                    2

ARTICLE II    -   Additions to System Facilities                              3

ARTICLE III   -   Sale of Power                                               4

ARTICLE IV    -   Reciprocal Services                                         5

ARTICLE V     -   Committees                                                  5

ARTICLE VI    -   Conditions Of Interconnected Operation                      7

ARTICLE VII   -   Metering                                                   12

ARTICLE VIII  -   Settlements                                                13

ARTICLE IX    -   Arbitration                                                13

ARTICLE X     -   Miscellaneous Provisions                                   15

ARTICLE XI    -   Term                                                       17
<PAGE>
                          POWER COORDINATION AGREEMENT
                          ----------------------------

0.1      THIS POWER COORDINATION  AGREEMENT,  entered into as of the 15th day of
         September,  1955, between SALT RIVER PROJECT  AGRICULTURAL  IMPROVEMENT
         AND POWER DISTRICT,  an Agricultural  Improvement  District,  organized
         under the laws of the State of Arizona  (here  after  in this Agreement
         and in the Schedules  attached  hereto called  "District")  and ARIZONA
         PUBLIC  SERVICE  COMPANY,  an Arizona  corporation  (hereafter  in this
         Agreement and in the Schedules attached hereto called "Company"),

                                   WITNESSETH:

0.2      WHEREAS,  District  owns and  operates  an  electric  system  supplying
         electric  service in the central  portion of the State of Arizona,  and
         Company owns and operates an electric system supplying electric service
         in the  central  portion of the State of Arizona and  elsewhere  in the
         State; and

0.3      WHEREAS,  the  electric  systems of District  and of Company in central
         Arizona have long been  interconnected at various points at which power
         has been sold and interchanged  between the systems,  and a substantial
         degree of coordination has been established and maintained  between the
         two systems for purposes of improving  the  quality,  reliability,  and
         economy of electric service in the respective territories served; and

0.4      WHEREAS,  an agreement  hereinafter  referred to as the  "Agreement  of
         August  31,  1955"  was  entered  into  between  District  and  Company
         providing,  among  other  things,  (i) for  clear  delimitation  of the
         respective  service  territories  and types of load of District  and of
         Company,  thereby facilitating  orderly and economical  development and
         expansion of the facilities of each system,  (ii) for  superseding  and
         cancelling  various existing  agreements  between District and Company,
         the terms of such  agreements  being no longer adequate and appropriate
         hr operating and economic  conditions now obtaining and foreseen in the
         development of the territories served, and (iii) for entering into a
                                        1
<PAGE>
         new  agreement to provide for sales and  interchange  of power  between
         District  and  Company  in  larger  amounts  and on the  basis  of more
         extensive  coordination  in operation and  development  of the electric
         systems of District and Company; and

0.5      WHEREAS,  the parties  believe that further  coordination on an assured
         and continuing basis will yield important  benefits to consumers and to
         the  economic  growth  of the  territories  served  and to  each of the
         systems, and that among such benefits will be the following:

         (a)      The  combined  power loads of the two systems can be supplied,
                  with adequate  reserve  capacity by less  aggregate  installed
                  generating  capacity with consequent net savings in investment
                  and expenses,

         (b)      Emergency  conditions  in either  system  can be met with less
                  likelihood of curtailment or impairment of electric service,

         (c)      New   installations   of   generating   facilities  to  supply
                  increasing power requirements can be made on a more economical
                  basis as to timing, unit sizes, location, and ownership,

         (d)      Fuller   utilization   can  be  made  of  more  efficient  and
                  economical  generating facilities and of interconnections with
                  other power systems, and

         (e)      When and as additional  hydro power may become  available from
                  new  developments on the Colorado River,  such hydro power can
                  be more widely and  economically  distributed to consumers and
                  better  utilization  can be realized for  available  secondary
                  hydro energy;

0.6      NOW,  THEREFORE,  in  consideration  of the  premises and of the mutual
         benefits from the covenants hereinafter set forth, IT IS AGREED:

             ARTICLE I -- COOPERATION IN DEVELOPMENT AND OPERATION
             -----------------------------------------------------

1.1      The provisions of this agreement,  as hereinafter set forth,  relate to
         cooperation in the development and operation of the respective electric
                                       2
<PAGE>
         systems of District and of Company and to sale and interchange of power
         and to mutual  assistance  between  the two  systems.  Each  party will
         comply with said provisions and assume and fulfill the responsibilities
         assigned to it therein.

1.2      The parties, through authorized representatives, will regularly consult
         with  each  other  and  cooperate  as to  planning  for  immediate  and
         subsequent  steps  in the  development  of  their  respective  electric
         systems and as to maintaining coordination in operation of said systems
         and realizing the benefits attainable therefrom.

                  ARTICLE II -- ADDITIONS TO SYSTEM FACILITIES
                  --------------------------------------------

2.1      As an initial stage in coordination of system development,  the parties
         will do those things set forth in Sections 2.2, 2.3, ant 2.4 following.

2.2      New  District   Generating   Station  --  District  will  proceed  with
         construction of a new steam-electric  generating  station,  hereinafter
         called "Agua Fria Generating Station," to be located between the cities
         of  Glendale  and  Peoria,  northwest  of the  city of  Phoenix,  which
         generating  station shall contain two  generating  units with a nominal
         capacity of 100,000  kilowatts  each with  provision  in its design and
         construction  for  installation of additional  generating  units.  Said
         generating  station  shall include  transformers  connecting it to a 69
         kilovolt bus which shall be adequately connected District's  electrical
         system. District will make available to Company suitable space adjacent
         to  said  69  kilovolt  bus for the  installation  by  Company  of a 69
         kilovolt  bus and  terminal  facilities  for at least five 69  kilovolt
         circuits  and  will  grant  to  Company,   without   charge   therefor,
         appropriate  easements  on its Agua Fria site for said bus and terminal
         facilities and for Company's 69 kilovolt circuits  connecting  thereto.
         District  will arrange the  construction  schedules  for said Agua Fria
         Generating  Station  on  the  basis  of  nominal  dates  for  beginning
         commercial  operation of the first generating unit on April 1, 1957, of
         the second  generating  unit on April 1, 1958, and District will in any
         event complete construction ready for commercial operation of the first
         generating  unit by June 1, 1957, and of the second  generating unit by
         June 1, 1958, 3
<PAGE>
         unless completion at such times be prevented by uncontrollable forces.

2.3      Company  Transmission  Connections  -- Company will provide 69 kilovolt
         transmission feeders and associated  facilities to connect its electric
         system to the 69  kilovolt  bus of said Agua Fria  Generating  Station,
         which  feeders  shall  be of  adequate  capacity  to  carry  from  said
         generating  station into Company's electric system all of the power, as
         set forth in Service Schedule A and Service Schedule C hereof, which is
         to be  delivered  by  District  to  Company  from  time  to time at the
         delivery  point  located  at  said  generating  station.  Company  will
         provide,  ready for service  when said  generating  units are ready for
         service, such of said 69 kilovolt feeders as are needed at those times,
         unless provisions at such times be prevented by uncontrollable forces.

2.4      Deferral  of  Company  Generating  Station  --  Company  will defer its
         arrangements  heretofore made for constructing a similar new generating
         station  at a  location  east of the  City of  Phoenix  which  had been
         scheduled for initial operation in the early part of 1957.

                          ARTICLE III -- SALE OF POWER
                          ----------------------------

3.1      District will sell  initially a substantial  amount of power to Company
         hereunder,  and it is  contemplated  by the parties that they will from
         time to time  arrange for other sales of power from one to the other in
         such  amounts and for such periods as will be  consistent  with orderly
         development of their respective systems and assurance of adequate power
         supply to the territories  served. It is contemplated that arrangements
         for such  inter-system  power  sales  will be  incorporated  in service
         schedules which, upon their execution by authorized  representatives of
         the parties,  shall be parts of this  agreement  for the periods  which
         they respectively cover.

3.2      The  following  service  schedules  providing  for sale and purchase of
         power are hereby made a part of this agreement:

         Service Schedule A -- Long-term Sale of Power by District to Company.

         Service Schedule B -- Sale of 12,000 Kilowatts by District to Com-
                                       4
<PAGE>
         pany (continuing until June 1, 1961).

         Service  Schedule C -- Sale of 40,000  Kilowatts by District to Company
         (continuing from early 1958 to early 1960).

                        ARTICLE IV - RECIPROCAL SERVICES
                        --------------------------------

4.1      It is  contemplated by the parties that they will from time to time put
         into effect  specific  arrangements  for reciprocal  services and other
         measures for coordination of the operation of their respective electric
         systems for the purpose of achieving economies in cost and improvements
         in quality and reliability of power supply to the  territories  served.
         It is  contemplated  that such  arrangements  will be  incorporated  in
         service schedules which,  upon their execution,  shall be parts of this
         agreement for the respective periods which they cover.

4.2      The following service schedules  providing for reciprocal  services are
         hereby made a part of this agreement:

         Service   Schedule  D  --  Energy   Interchange  and  Spinning  Reserve
         Interchange.

         Service Schedule E -- Capacity  Equalization  ant Reciprocal  Emergency
         Assistance.

         Service Schedule F -- Transfer of Power to Fringe-Area Customer Service

         Service Schedule G -- Parker Power Interchange.

         Service  Schedule H --  Coordination  of  Interconnecting  Transmission
         Circuits.

                             ARTICLE V -- COMMITTEES
                             -----------------------

5.1      As a means of securing effective  cooperation in the planning of system
         development  and of dealing on a prompt and orderly  basis with various
         technical and operating  problems which arise in connection with system
         coordination  under changing  conditions,  the parties will establish a
         "Coordination  Committee"  and an "Operating  Committee",  each charged
         with certain responsibilities hereunder.

5.2      Coordination  Committee-- The  Coordination  Committee shall consist of
         two  representatives,  one  designated  by each  party,  and each  such
         representative  shall  be  authorized  by  the  party  by  whom  he  is
                                        5
<PAGE>
         designated  to act on its behalf with respect to those  matters  herein
         provided to be  responsibilities  of the  Coordination  Committee.  The
         functions and  responsibilities of the Coordination  Committee shall be
         (i) to establish general policies to be followed in coordination of the
         operation of the electric  systems of the parties,  consistent with the
         provisions  of  this  agreement,   (ii)  to  review   periodically  the
         prospective aggregate power requirements of the two systems, to arrange
         for investigations with respect to time, nature, location and ownership
         of additional generating capacity and related transmission  facilities,
         and with respect to possible  power  purchases  from external  sources,
         which will provide for such aggregate  power  requirements  in a manner
         consistent  with  overall  effectiveness  and  economy,  and to present
         recommendations  as to  such  matters  to the  parties,  (iii)  to make
         recommendations concerning changes in principal network delivery points
         and to make  arrangement for any such changes  approved by the parties,
         (iv) to exercise  general  supervision  and guidance over the Operating
         Committee,  (v) to  consider  and  act  upon  matters  referred  to the
         Coordination Committee by the Operating Committee,  and (vi) to do such
         other  things as are  provided  herein and as may be provided  for from
         time to time  by the  parties  to this  agreement;  provided  that  the
         Coordination  Committee  shall have no  authority  to modify any of the
         provisions of this agreement (including any service schedules effective
         hereunder)  except as to items where  modification  is  specified to be
         within the scope of the Coordination  Committee's  responsibility.  Any
         decision or agreement by the Coordination  Committee shall be effective
         when signed by both  members of the  Committee.  Each party will notify
         the other party promptly of the  designation of its  representative  on
         the  Coordination  Committee  and  of any  subsequent  change  in  such
         designation.  Either party may  designate an alternate or substitute to
         act as its  representative  on the Coordination  Committee on specified
         occasions or with respect to specified matters.

5.3      Operating  Committee -- The Operating  Committee  shall consist of four
         representatives,   two   designated  by  each  party,   and  each  such
         representative  shall  be  authorized  by  the  party  by  whom  he  is
         designated  to act on its behalf with respect to those  matters  herein
         provided  to  be  responsibilities  of  the  Operating  Committee.  The
         functions and  responsibilities of the Operating Committee shall be (i)
         to establish  procedures and standard  practices,  consistent  with the
         provisions  hereof,  for the  guidance  of load  dispatchers  and other
         operating  employees in the respective  systems as to matters affecting
         interconnected op-
                                       6
<PAGE>
         rations of the respective  systems,  delivery of power,  interchange of
         energy and spinning reserve, reciprocal emergency assistance, and other
         similar operating  matters,  (ii) to establish  procedures and standard
         practices  as to  determinations  of costs and  expenses  and of energy
         losses in connection  with energy  interchanges  and other  intersystem
         transactions   hereunder,   (iii)  to   establish   detailed   metering
         arrangements required in connection with transactions  hereunder,  (iv)
         to bring to the attention of the Coordination Committee matters needing
         its  attention,  and (v) to do such other  things as are  provided  for
         herein;  provided that the Operating  Committee shall have no authority
         to  modify  any of the  provisions  of this  agreement  (including  any
         service  schedules  effective  hereunder)  except  as  to  items  where
         modification  is  specified  to be within  the  scope of the  Operating
         Committee's  responsibility.  The  establishment  of any  procedure  or
         practice  and  any  other  action  or  determination  by the  Operating
         Committee,    within   the   scope   of   the   Operating   Committee's
         responsibility,  shall  be  effective  when  signed  by  at  least  one
         designated  representative  of each of the  parties.  Each  party  will
         notify  the  other   party   promptly  of  the   designations   of  its
         representatives  on the  Operating  Committee  and  of  any  subsequent
         changes in such designations.

5.4      Disagreements  -- If the Operating  Committee  shall disagree as to any
         action to be taken or decision to be made, or as to the need for taking
         any  action or making  any  decision,  or as to  whether  any matter is
         within  the  scope  of  the  Operating   Committee's   responsibilities
         hereunder,  the question or questions at issue shall be referred to the
         Coordination   Committee  for  its  action  or  instructions.   If  the
         Coordination Committee be unable to reach agreement with respect to any
         matter  referred to it by the Operating  Committee,  or with respect to
         any other matter  within the scope of its  responsibilities  hereunder,
         the  Coordination  Committee  may at its  discretion  request  that the
         matter be referred to arbitration in the manner  provided in Article IX
         hereof.  Reference to arbitration shall be mandatory only in respect of
         those matters which are specifically made subject to arbitration by the
         provisions of this agreement.

               ARTICLE VI - CONDITIONS OP INTERCONNECTED OPERATION
               ---------------------------------------------------

6.1      Interconnection  Points - For purposes hereof the following terms shall
         have the meanings indicated:
                                       7
<PAGE>
         (a)      A   "major   interconnection   point"   means   a   point   of
                  interconnection between the electrical networks of the parties
                  into which the  transmission or transformer  facilities of the
                  respective  systems  are able to deliver  or to receive  large
                  amounts of power and the  location of which in relation to the
                  respective   systems  is  such  that   power   being  sold  or
                  interchanged can be effectively and  satisfactorily  delivered
                  and utilized.  The following major interconnection  points are
                  established hereunder:

                  (i)      At a location  west of the City of Phoenix  adjoining
                           Company's Phoenix  Generating Station and the Phoenix
                           Terminal  Substation  of the  Bureau of  Reclamation,
                           where  the  systems  can  be   interconnected  at  69
                           kilovolts or at 12 kilovolts or at both voltages,

                  (ii)     At  or  adjoining  District's  Agua  Fria  Generating
                           Station at 69 kilovolts,  when the first unit of said
                           generating  station  shall be completed and ready for
                           operation,

                  (iii)    At or  adjoining  Mesa  Substation  of The  Bureau of
                           Reclamation at 69 kilovolts.

                  Establishment of additional major interconnection  points from
                  time to time and the  ownership and physical  arrangements  at
                  such points shall be as recommended by the Operating Committee
                  and approved by the  Coordination  Committee.  Existing  major
                  interconnection  points,  except a principal  network delivery
                  point  under a  service  schedule,  may  from  time to time be
                  discontinued upon  recommendation  of the Operating  Committee
                  and approval of the Coordination  Committee.  Responsibilities
                  of the  parties for  operation  and  maintenance  at the major
                  interconnection   points  shall  be  as   established  by  the
                  Operating  Committee  and  shall  be  evidenced  by  operating
                  memoranda covering such matters.

         (b)      A   "minor   interconnection   point"   means   a   point   of
                  interconnection  between  the  electrical  facilities  of  the
                  parties, either at substations or at points on transmission or
                  distribution  feeders,  where power can be both  delivered and
                  received  between the systems in  relatively  small amounts as
                  compared to major interconnection  points. The location of and
                  arrangements for minor interconnection points, for regular use
                  and for emergency use,
                                       8
<PAGE>
                  shall be such as may from time to time be  recommended  by the
                  Operating   Committee   and   approved  by  the   Coordination
                  Committee.

         (c)      An   "indirect   interconnection   point"  means  a  point  of
                  interconnection  between  the  electrical  system of one party
                  hereto and the electrical system of a third party, which third
                  party's  electrical  system is also  interconnected at another
                  point to the electrical system of the other party hereto.

6.2      Parallel  Operation  -- The  electrical  systems of the  parties  shall
         normally  be  operated  in  parallel  (i) at all major  interconnection
         points,  (ii) at such  minor  interconnection  points as the  Operating
         Committee  shall from time to time  designate for normal closed circuit
         operation,  and (iii) at indirect  interconnection  points  where third
         party  arrangements  require such  parallel  operation,  or where third
         party  arrangements  permit such  parallel  operation and the Operating
         Committee shall  determine that such parallel  operation is a desirable
         practice from the aspect of coordination between the electrical systems
         of the parties hereto.  Temporary  emergency  interconnections at other
         points may be arranged from time to time by the Operating Committee, as
         circumstances  may require.  It is the intent of the parties that their
         network systems shall normally be operated as fully  interconnected  as
         may be necessary or convenient to protect  quality and  reliability  of
         service to consumers without involving undue  complications and expense
         for intersystem metering and energy accounting.  Deviations from normal
         parallel operation may be made as directed by the Operating  Committee,
         or as  provided  for in  standard  practice  adopted  by the  Operating
         Committee,  or as may under  special  temporary  conditions be arranged
         between the respective load dispatchers.

6.3      Outage  Schedules -- The parties will cooperate in scheduling the times
         and  durations of removal from  service of major  generating  units and
         important transmission circuits for inspection,  maintenance or repair,
         to the end that hazard to or  interference  with  service to  consumers
         will be minimized.  The arranging of such outage coordination schedules
         shall be a responsibility of the Operating Committee.

6.4      Electrical  Disturbances  -- Each party will insofar as  practicable to
         construct,  operate and maintain its system and  facilities as to avoid
         or minimize the likelihood of a disturbance originating from its system
         which might cause impairment of service in the system of the other
                                       9
<PAGE>
         party or in any third-party  system  interconnected  with the system of
         the other party.

6.5      Frequency -- Power  supplied by either party to the other in accordance
         with service schedules  hereunder shall be at a nominal frequency of 60
         cycles  per  second,  except as in any  service  schedule  specifically
         provided  otherwise.  Insofar as  interconnected  system  frequency  is
         within the control of the parties,  it shall be a responsibility of the
         Operating Committee to establish operating arrangements for maintaining
         frequency  within  limits  satisfactory  for the  types of power  loads
         served by the two systems.

6.6      Tie Line Load Control -- The respective responsibilities of the parties
         with respect to tie line load control at interconnection points and the
         types of  control  equipment  installed  for such  purpose  shall be in
         accordance with standard practices established from time to time by the
         Operating Committee.

6.7      Relays -- The types  and  settings  of relay  equipment  installed  for
         control of circuits  connected  to  interconnection  points shall be in
         accordance with standard practices established from time to time by the
         Operating Committee.

6.8      Voltage -- Variations and  fluctuations  in voltage at  interconnection
         points, and at other delivery points for power supplied by one party to
         the other,  shall be kept within  limits  which will  minimize  adverse
         effects upon operation of the electrical system of either party or upon
         service supplied by either system. The respective  responsibilities  of
         the parties with respect to voltage  control at such points shall be in
         accordance with standard practices established from time to time by the
         Operating Committee.

6.9      Reactive  Kilovolt-Amperes -- Except as may be specifically provided in
         a service schedule hereunder or as may be arranged in specific cases by
         the  Operating  Committee,  neither  party shall be entitled to receive
         kilovars  from the other party or obligated  to supply  kilovars to the
         other party. Each party will cooperate with the other party to minimize
         unintended flow of kilovars between the systems. It shall be within the
         responsibility of the Operating  Committee to adopt standard practices,
         including appropriate charges, if any, for
                                       10
<PAGE>
         scheduling flow of kilovars  between the systems under  conditions when
         there may be a mutual  advantage from such flow and for  controlling or
         limiting  unscheduled kilovar flow. In the event of any disagreement in
         connection  with the supply of  kilovars  either  party  shall have the
         right to have the matter submitted to arbitration.

6.10     Scheduling of Power Deliveries -- The Operating Committee shall arrange
         for all power  transactions  hereunder to be accounted for on the basis
         of  amounts   scheduled   between  the  respective  load   dispatchers.
         Arrangements  made  therefor by the Operating  Committee  shall provide
         that the  respective  load  dispatchers  will  maintain in  duplicate a
         running record of cumulative  deviations from aggregate schedules,  and
         that such  cumulative  deviations  will be compensated  for by opposite
         deviations  made  as  promptly  as  practicable,   provided  that  such
         compensatory deviations are to be made under generally similar load and
         resource  conditions  or to be  subject to  adjustment  factors to take
         account of  differences  in load and resource  conditions  between time
         when initial deviations occur and time when compensatory deviations are
         made.

6.11     Temporary  Interchange  Arrangements  -- In cases  where,  from time to
         time, there may be a mutual advantage from sale or interchange of power
         between  the  parties  upon a basis  not  provided  for in any  service
         schedule   then  in  effect  and  the   circumstances   are  such  that
         arrangements  must be made promptly in order to realize such advantage,
         or  in  cases  of  emergency  or of  temporary  and  unusual  operating
         conditions,   temporary  arrangements for  individual  transactions  or
         classes  of  transactions  may  be  made  by the  Operating  Committee;
         provided,  however,  that  no  continuing  commitment  involved  in any
         arrangement so made at any time by the Operating  Committee,  under its
         responsibilities  hereunder,  shall extend for a longer  period than 30
         days.

6.12     Operating  Data -- Each party will make  available  to the other  party
         operating data with respect to effective capacities of generating units
         and transmission circuits,  incremental costs of power sources, current
         and  estimated  future power loads of its electric  system and sections
         thereof,  and similar matters,  to the extent that such data are needed
         by the  Coordination  Committee  and  the  Operating  Committee  in the
         discharge of their responsibilities hereunder and are needed in
                                       11
<PAGE>
         connection with load dispatching and energy accounting for transactions
         hereunder.  It shall be a responsibility of the Operating  Committee to
         arrange  for  reasonable  opportunity  for  each  party to  review  the
         supporting data for the information so supplied by the other party.

                             ARTICLE VII -- METERING
                             -----------------------

7.1      Metering Facilities -- Arrangements with respect to location,  type and
         ownership of metering facilities required for purposes of control of or
         settlements  for power  transactions  hereunder  shall be in accordance
         with the  provisions  of the  service  schedules  covering  such  power
         transactions.  The owner of a metering installation,  the registrations
         of which are important in connection with  settlements for transactions
         hereunder,  upon  request  of the  other  party,  will  make  available
         suitable space and facilities for installation of check metering.

7.2      Testing and Reading of Meters -- Metering equipment,  the registrations
         of which are involved in settlements for transactions hereunder,  shall
         be  inspected  and tested by the owner at annual  intervals  or at such
         shorter  intervals as may be directed by the Operating  Committee,  and
         any inaccuracy  disclosed by such tests shall be promptly  corrected by
         the owner. Additional inspections and tests at particular installations
         shall  be  made  by  the  owner  upon   request  of  the  other  party.
         Representatives of the other party shall be afforded  opportunity to be
         present at all such inspections and tests. If at any test a meter shall
         be found to be  inaccurate by more than 1%, fast or slow, an adjustment
         shall  be  made  in  settlements   hereunder  between  the  parties  to
         compensate for the effect of such  inaccuracy  over a preceding  period
         extending to the second  preceding  meter  reading or over such shorter
         period as the inaccuracy  may be determined to have existed.  If at any
         time a meter should fail to register or its  registration  should be so
         erratic as to be meaningless,  the estimated  correct  registration for
         billing  purposes  shall be based  upon  records  of check  meters,  if
         available,  or otherwise upon the best  obtainable  data.  Kilowatthour
         meters  involved in settlements  hereunder shall be read monthly by the
         owner,  and  representative  of  the  other  party  shall  be  afforded
         opportunity to be present at such readings.  Arrangements  with respect
         to reading of meters belonging to third parties, the registrations
                                       12
<PAGE>
         of which are involved in settlements for transactions hereunder,  shall
         be a responsibility of the Operating Committee.

                           ARTICLE VIII -- SETTLEMENTS
                           ---------------------------

8.1      Accounting Period -- Accounting period for transactions hereunder shall
         be one month.  Such  one-month  period shall be a calendar month unless
         the  Coordination  Committee shall specify a one-month  period ending a
         designated number of days before the end of each calendar month.

8.2      Billing and Payment -- Bills for amounts  payable for any month by each
         party to the other  hereunder  shall be  rendered on or before the 14th
         day of the  succeeding  month  and shall be due on the 19th day of such
         succeeding month or on the 5th day after receipt of bill,  whichever be
         later,  provided,  however, that in the event that any amount which has
         become due District for power and energy transactions  hereunder is not
         received by District prior to the due date of District's fuel bills for
         such month and any such bill for fuel owed to  Company  shall have been
         paid on or before the due date,  then the energy charge  portion of the
         amount so due  District  for such month shall be  increased  by 0.635%.
         Payment  shall be made at such office of the party to which  payment is
         due as that party shall designate by written  notice.  Amounts not paid
         on or before the due date shall be payable with interest accrued at the
         rate of 1/2 percent  compounded  monthly  computed from the due date to
         the date of payment.

8.3      Disputed  Bills -- In case any portion of any bill be in  dispute,  the
         undisputed  amount shall be paid when due, and the  remainder,  if any,
         upon determination of the correct amount,  shall be paid promptly after
         such  determination  with  interest  accrued at the rate of 1/2 percent
         compounded monthly computed from the original due date.

                            ARTICLE IX -- ARBITRATION
                            -------------------------

9.l      In the event the parties be unable to reach agreement with respect to a
         matter herein  specified to be subject to arbitration,  or in the event
         the  Coordination  Committee  shall  request  that an  issue  shall  be
         submitted  to   arbitration,   the  procedure   with  respect  to  such
         arbitration
                                       13
<PAGE>
         shall be as set forth in Sections 9.2 through 9.6 hereof.

9.2      Either  party  by  written  notice  to the  other  party  may  call for
         appointment of a three-person board of arbitration, designating in such
         notice  one  person  appointed  by it to  serve  as a  member  of  such
         three-person   arbitration  board.  The  other  party  thereupon  shall
         similarly  appoint a second  person and the two  persons  so  appointed
         shall  endeavor to agree upon and secure the services of a third person
         to complete such three-person arbitration board.

9.3      If,  within  twenty days after the  appointment  of the first member of
         said arbitration  board by one party, the other party shall have failed
         to  appoint  a second  member,  or if  within  fifteen  days  after the
         appointment of a second member,  no third member shall have been agreed
         upon and secured, either party, with written notice to the other party,
         may call upon the person who is the senior  Judge of the United  States
         District  Court in and for the  District of Arizona to appoint a second
         and a third  member,  or a third  member,  as the case  may be.  If the
         person so called upon shall fail for ten (10) days to act,  then either
         party with written notice to the other party may call successively upon
         (i) any other person who is a Judge of the United States District Court
         in and for the  District  of  Arizona,  or (ii)  persons  who are  then
         members of the Supreme Court of Arizona in the order of their seniority
         in office, to make such appointment.

9.4      The board of  arbitration  appointed as provided in Section 9.2 or 9.3,
         shall hear the  evidence  submitted  by the  parties,  and may call for
         additional  information.  The  decision,  submitted  in  writing,  by a
         majority  of the  arbitration  board,  shall  be  conclusive  as to the
         disagreement  submitted for  arbitration  and shall be binding upon the
         parties.

9.5      Each party  shall bear the fee and  personal  expenses of the member of
         the  arbitration  board appointed by or for it, and all other costs and
         expenses  of the  arbitration  shall be  borne  in  equal  parts by the
         parties,  unless the  decision of a majority of the  arbitration  board
         shall specify a different apportionment of such costs and expenses.

9.6      Except as otherwise provided in this Article and in cases where the
                                       14
<PAGE>
         parties  may  otherwise  agree,  the  procedure  for  hearings  in  any
         arbitration  proceeding  conducted hereunder shall follow to the extent
         practical the  procedure set forth in Rules V and Vl of the  Commercial
         Arbitration Rules of the American Arbitration  Association,  as amended
         and in effect January 1, 1952.

9.7      The foregoing provisions set out in Sections 9.2 through 9.6 hereof are
         agreed to by the parties as the arbitration  procedures to be followed,
         rather than the  procedures  set out in Article 3, Chapter 27,  Arizona
         Code  Annotated,  1939. In the event the  following of such  procedures
         should for any reason be or become invalid under Arizona law, or if the
         decision of the arbitration  board  thereunder  should be unenforceable
         under the Arizona law, then the parties agree, as an alternative to the
         said  procedures  set out in Sections  9.2  through  9.6, to follow the
         procedures  for  arbitration  then  provided for by or permitted  under
         Arizona  law,  and to take such steps as are  necessary  to follow such
         procedures.

                      ARTICLE X -- MISCELLANEOUS PROVISIONS
                      -------------------------------------

10.1     Uncontrollable  Forces -- Neither  party shall be  considered  to be in
         default in performance of any obligation hereunder or under the service
         schedules  attached  hereto if failure of  performance  shall be due to
         uncontrollable  forces,  the term  "uncontrollable  forces" meaning any
         cause  beyond the  control of the party  affected,  including,  but not
         limited to,  failure of facilities,  flood,  earthquake,  storm,  fire,
         lightning,  epidemic, war, riot, civil disturbance,  labor disturbance,
         sabotage, and restraint by court or public authority, which by exercise
         of due foresight such party could not reasonably  have been expected to
         avoid,  and which by  exercise of due  diligence  it shall be unable to
         overcome.  Neither party shall,  however,  be relieved of liability for
         failure of  performance if such failure be due to causes arising out of
         its own negligence or to removable or remediable  causes which it fails
         to remove or remedy with reasonable dispatch. Nothing contained herein,
         however,  shall be  construed  to  require  either  party to prevent or
         settle a strike against its will.

10.2     Restriction  on  Use  of  Irrigation  Water  --  Without  limiting  the
         obligation  of  District  to supply  and/or  deliver  power to Company,
         nothing in this agreement nor in any service schedules now or hereafter
         attached shall require the District in furnishing power to Company to
                                       15
<PAGE>
         waste water required for  irrigation  within the boundaries of the Salt
         River Reservoir District, as such boundaries are particularly described
         in Section 3 of Article IV of the Articles of Incorporation of the Salt
         River Valley Water Users' Association, filed February 9, 1903.

10.3     Waiver -- Any waiver by a parry of its rights with respect to a default
         under this  agreement,  or with respect to any other matter  arising in
         connection with this agreement, shall not be deemed to be a waiver with
         respect to any  subsequent  default or matter.  No delay,  short of the
         statutory  period of  limitations,  in asserting or enforcing any right
         hereunder shall be deemed a waiver to such right.

10.4     Amendments -- Neither this  agreement nor any of the service  schedules
         attached, or to be attached,  shall be deemed to be amended unless such
         amendments  shall be formally  executed on behalf of each party and the
         execution  thereof  be  authorized,   ratified,   or  approved  by  the
         respective Boards of Directors of the parties.

10.5     Notices -- (a) Any  notice,  demand,  or request  provided  for in this
         agreement or given or made in connection with this agreement to or upon
         District  shall be deemed to be properly  given or made if delivered or
         sent  by  registered   mail  to  the  Secretary,   Salt  River  Project
         Agricultural  Improvement and Power District,  P. O. Box 1980, Phoenix,
         Arizona.

                  (b)  Any  notice,  demand,  or  request  provided  for in this
         agreement  to or upon Company  shall be deemed to be properly  given or
         made if delivered or sent by registered mail to the Secretary,  Arizona
         Public Service Company, P. O. Box 2591, Phoenix, Arizona.

                  (c) The designation or the address of any person  specified in
         this paragraph 10.5 may be changed at any time by written notice.

                  (d) Notices and requests of a routine  character in connection
         with  delivery or receipt of power or in connection  with  operation of
         facilities  shall be given in such  manner as the  Operating  Committee
         from time to time shall arrange.

10.6     Regulatory  Authorities -- This agreement is subject to valid laws, and
         to valid orders, rules, and regulations of duly constituted  regulatory
         authorities having jurisdiction.
                                       16
<PAGE>
10.7     Successors  and Assigns -- Neither party,  without the written  consent
         and approval of the other party hereto,  shall assign this agreement or
         any of the service schedules now or hereafter attached hereto except as
         a part of any transaction or  transactions  effected in compliance with
         Article X of the Agreement of August 31, 1955,  relating to "TRANSFERS,
         MERGERS  AND  ASSIGNMENTS."  Subject to the  foregoing  provisions  and
         restrictions  herein set forth and referred to, this  agreement and the
         attached  service  schedules  shall be binding  upon,  and inure to the
         benefits  of the parties  hereto and their  respective  successors  and
         assigns.

10.8     Captions and  Headings -- The  captions and headings  appearing in this
         agreement and in service  schedules  hereunder  are inserted  merely to
         facilitate  reference and shall have no bearing upon the interpretation
         of the provisions.

10.9     Article,  Section and  Paragraph  References -- References by number to
         articles,  sections and  paragraphs  in this  agreement  and in service
         schedules  attached or to be attached  are to  articles,  sections  and
         paragraphs of the particular  document in which the references  appear,
         except as such references are specifically to other documents,  and any
         reference  to  service  schedules  shall  refer  to  service  schedules
         attached to this Power Coordination Agreement.

10.10    Conditions  and  Provisions  of  Agreement  of August 31,  1955 -- This
         agreement and attached  service  schedules  fulfill all  conditions and
         provisions of Article III of the "Agreement of August 31, 1955."

                               ARTICLE XI -- TERM
                               ------------------

11.1     Effective Date -- This agreement shall become  effective as of the time
         when  the  conditions  and  approvals  required  by  Article  XV of the
         Agreement of August 31, 1955, shall have been fulfilled and obtained.

11.2     Duration -- This agreement shall continue in effect indefinitely unless
         and until  terminated  as  provided  in  paragraphs  (a) or (b) of this
         section.

         (a)      District may terminate this agreement by giving written notice
                  to  Company  three  (3)  years  in  advance  of  the  date  of
                  termination  designated in such notice,  and such  termination
                  shall concurrently terminate all service schedules.
                                       17
<PAGE>
         (b)      In the  event,  at any time,  (i) that all  service  schedules
                  theretofore  in  effect   hereunder  have  been  cancelled  or
                  terminated in accordance with the provisions  thereof or valid
                  written notices have been given  cancelling or terminating all
                  such  service  schedules  in  accordance  with the  provisions
                  thereof,  and (ii)  that no new  service  schedules  have been
                  approved by the parties to become  effective at a future date,
                  and (iii) that no new service  schedules  shall be the subject
                  of bona fide  negotiation  between the  parties,  then in such
                  event this  agreement  may be  terminated as of any date later
                  than the expiration of all service schedules by written notice
                  given by either  party to the other  party one year in advance
                  of the date of termination designated in such notice.

                  IN WITNESS WHEREOF,  the respective parties hereto have caused
         this instrument to be executed on their behalf by their duly authorized
         officers and their  corporate seals to be hereunto  affixed,  all as of
         the date and year first above written.

                                    SALT RIVER PROJECT AGRICULTURAL
                                    IMPROVEMENT AND POWER DISTRICT


                                    By   VICTOR I. CORBELL
                                      -----------------------
                                             President


ATTEST:


         A. L. MONETTE
- -------------------------------
           Secretary
                                       18
<PAGE>
APPROVED:

Jennings, Strouss, Salmon & Trask



By:      J. A. RIGGINS, JR.
   -----------------------------
Legal Counsel
Salt River Project Agricultural
Improvement and Power District



                                            ARIZONA PUBLIC SERVICE COMPANY



                                            By:      WALTER T. LUCKING
                                               ----------------------------
                                                         President


ATTEST:


          [Illegible]
- ---------------------------------
           Secretary



APPROVED:

Snell & Wilmer



By       NICHOLAS H. POWELL
  -------------------------------
Legal Counsel
Arizona Public Service Company
                                       19
<PAGE>
                                    APPROVAL
                                    --------

         The  foregoing  "Power  Coordination  Agreement of September  15,1955",
between  Salt River  Project  Agricultural  Improvement  and Power  District and
Arizona Public Service Company,  and the following designated service schedules,
to-wit:

                  Service Schedule A -- Long-Term  Sale of Power by  District to
                                        Company, and Supplement No. 1 to Service
                                        Schedule A.

                  Service Schedule B -- Sale of 12,000  Kilowatts by District to
                                        Company.

                  Service Schedule C -- Sale of 40,000  Kilowatts by District to
                                        Company.

                  Service Schedule D -- Energy  Interchange and Spinning Reserve
                                        Interchange.

                  Service Schedule E -- Capacity   Equalization  and  Reciprocal
                                        Emergency Assistance.

                  Service Schedule F -- Transfer   of   Power   to   Fringe-Area
                                        Customers.

                  Service Schedule G -- Parker Power Interchange.

                  Service Schedule H -- Coordination     of      Interconnecting
                                        Transmission Circuits.

are approved this 29th day of February, 1956.


                                                       [Illegible]
                                              ----------------------------------
                                                Secretary of the Interior
                                                of the United States of America

                             Memorandum of Agreement

This  Memorandum of Agreement is made with an Effective  Date of April 25, 1998,
between Arizona Public Service Company (hereinafter referred to as APS) and Salt
River Project Agricultural  Improvement and Power District (hereinafter referred
to as SRP). By signing this  Memorandum  of  Agreement,  it is the intent of the
parties to bind themselves to certain obligations and to recommend certain items
to their respective governing boards for approval.

The  parties  further  understand  that  apart  from  those  provisions  of this
Memorandum of Agreement which impose bilateral  obligations that can be uniquely
addressed by contract,  the remaining  provisions  relating to  legislation  and
regulatory policies only affect the positions that each party will assert before
these legislative and regulatory  bodies.  They do not and can not prescribe any
particular  outcome to be reached  by said  bodies;  indeed,  in  reaching  this
Memorandum  of  Agreement,  each  party  acknowledges  the  risk  that  any such
legislative and/or regulatory decision may differ significantly from one or more
of the positions outlined herein.

                                    RECITALS

These facts form the basis of this Memorandum of Agreement:

1.      APS is an Arizona  corporation  engaged in the electric utility business
        in the State of Arizona.  One hundred percent of the common stock of APS
        is owned by Pinnacle  West Capital  Corporation  (hereinafter  "Pinnacle
        West").

2.      SRP is an  agricultural  improvement  and power district of the State of
        Arizona and is engaged in the electric  utility business in the State of
        Arizona.

3.      APS and SRP have  characteristics  in common but have also differed on a
        number of issues outlined below.

4.      In 1955 APS and SRP entered into two agreements known as the Territorial
        Agreement (dated August 31, 1955) and the Power  Coordination  Agreement
        (dated  September  15,  1955).   Among  other  things,  the  Territorial
        Agreement provides for exclusive retail electric service  territories as
        between  SRP and APS under the policy of the State of Arizona  regarding
        the provision of electricity.  The Power Coordination Agreement provides
        for certain electric system coordination and power sales.

5.      APS and SRP also are  participants  in  several  jointly-owned  electric
        generating  facilities,  some of which are  operated  by APS and some of
        which are operated by SRP.
<PAGE>
6.      Many states in the United States,  including Arizona, are enacting rules
        and  legislation  which will  require  electric  utilities to open their
        service  territories to competition in the retail sale of electric power
        supply and other non-distribution services.

7.      The parties wish to amend the Territorial Agreement to eliminate it as a
        barrier  to   competition   in  order  to  permit  full  and  unfettered
        competition between APS and SRP in the sale of electric power supply and
        other  non-distribution  services as  authorized  or  permitted  by law,
        according to such time  schedules and terms that are applicable to other
        electricity suppliers.

8.      Disputes   have  arisen   between  the  parties   regarding  the  future
        enforceability   of  the  power   purchase   obligations  of  the  Power
        Coordination  Agreement,  which  the  parties  wish  to  resolve  by  an
        amendment  to the  Power  Coordination  Agreement.  The price set by the
        agreement is currently above market price.  APS has argued,  inter alia,
        that it may terminate  the power  purchase  obligations  on the start of
        retail competition arguing that the power purchase  obligations are tied
        to the  exclusive  right to serve certain  territories.  SRP has argued,
        inter alia,  that the wording  and intent of the  agreement  is that the
        power purchase  obligation  will  continue.  The parties wish to resolve
        this dispute by adjusting the terms of the Power Coordination Agreement.

9.      The parties have  identified  certain  operational  opportunities  which
        would give a net benefit to both parties,  and that they wish to address
        through the framework of this Memorandum of Agreement.

10.     Other  disputes  have arisen  between the parties  which result from the
        transition to a competitive  electricity  market,  and which the parties
        wish to settle by this Memorandum of Agreement.

11.     The parties wish to permit  vigorous and full  competition  between them
        under the terms and conditions of applicable laws.

12.     The parties wish to resolve the other issues  identified herein so as to
        permit such competition to take place in a fair and equitable manner and
        at the earliest practical date.
                                                                          Page 2
<PAGE>
                                    AGREEMENT

Now, therefore, the parties agree as follows:

1. Amendment of Territorial Agreement

SRP and APS agree to present to their governing  boards at the first  reasonable
opportunity,  and to recommend that their  governing  boards  approve,  a second
amendment to the  Territorial  Agreement in the form attached  hereto as Exhibit
One. It is the intent of this  amendment to change the terms of the  territorial
agreement only to the extent necessary to permit full and unfettered competition
between  APS and SRP,  on the same terms as may be  applicable  to other  retail
electricity  suppliers who sell into the  distribution  territory of APS or SRP.
With this  amendment,  the parties  reaffirm the Territorial  Agreement.  In the
event that the  amendment set forth as Exhibit One is not approved by the SRP or
APS governing board,  then the parties shall renegotiate in good faith the terms
of this  entire  Memorandum  of  Agreement,  with the  objective  of  reaching a
substitute  agreement  acceptable to the governing  boards of each party. If the
parties are unable to reach an  agreement  in such  event,  this  Memorandum  of
Agreement may be terminated by either party by written notice to the other.

2. Amendment of the Power Coordination Agreement

SRP and APS agree to present to their governing  boards at the first  reasonable
opportunity,  and to recommend that their governing boards approve, an amendment
to Service Schedule A of the Power  Coordination  Agreement in the form attached
hereto as Exhibit  Two.  With this  amendment,  the parties  reaffirm  the Power
Coordination Agreement. In the event that the amendment set forth as Exhibit Two
is not  approved  by the SRP or APS  governing  board,  then the  parties  shall
renegotiate in good faith the terms of this entire Memorandum of Agreement, with
the  objective of reaching a substitute  agreement  acceptable  to the governing
boards of each party.  If the parties are unable to reach an  agreement  in such
event, this Memorandum of Agreement may be terminated by either party by written
notice to the other.

3. Identification of Future Savings

The  parties  agree to use  their  best  efforts  to  execute  an  agreement  or
agreements  by October 15, 1998,  providing  for the  implementation  of various
measures  that will  provide APS and SRP each with net cost  savings of at least
$15 million in net present value  (calculated  at an 8.7% discount rate) between
January 1, 1999 and December 31, 2006. Such measures may include,  but shall not
be limited to , joint generation operation, fuel procurement activity,  spinning
reserves,  scheduling of the APA load/Hoover  generation,  the use of additional
delivery  points  for  transmission,  future  joint  ventures,  trenching  cable
replacement  programs,  and  other  beneficial  generation,   distribution,  and
transmission  activities.  The  appropriate  senior  executives from APS and SRP
shall personally
                                                                          Page 3
<PAGE>
participate  in the  efforts  to reach  such an  agreement,  shall meet at least
weekly,  and  shall  devote  such  resources  as are  necessary  for  successful
completion of the task.

4. Dispute Resolution

With respect to all future  substantive  disputes which reasonably relate to the
subject matter of this Memorandum of Agreement, and which are not covered by any
other  agreement  between  APS and SRP,  the  parties  will,  where  lawful  and
reasonably  feasible,  meet and confer and  attempt in good faith to resolve any
such matters, before taking a public position on the matter.

5. State Political Issues

With respect to state issues  relating to  competition  between public power and
investor owned  utilities,  at this time the parties have reached these specific
agreements:

         a. The parties  will  jointly  support an  amendment  of HB 2663 on the
         Senate  floor or  otherwise,  as has been  previously  agreed to by the
         parties  and  will  support  passage  of HB  2663  as so  amended.  The
         amendment is attached as Exhibit Three. The parties agree to reasonably
         cooperate  with each  other in the  event of  political  difficulty  in
         advancing part or all of the amendment. If HB 2663 as so amended is not
         enacted into law, the parties agree to jointly  support passage of such
         legislation in the future.

         b. SRP will not take a position  on  additional  amendments  to HB 2663
         which may be proposed by APS, as have been previously disclosed to SRP,
         relating to Title 40 waivers and electric and irrigation districts.

         c. APS will support the development of an  intergovernmental  agreement
         between  the  Corporation  Commission  and  SRP  which  will  primarily
         coordinate  the  activities of the  Commission and SRP in opening SRP's
         service  territory  and the service  territory  of APS and other public
         service corporations to electricity competition.

         d. Upon request APS shall provide SRP with an estimated amount of APS's
         remaining  total stranded cost compiled using  assumptions  and methods
         both  parties  find  reasonably  acceptable,  the  amount of APS's then
         unrecovered  regulatory  assets  pursuant to ACC decision number 59601,
         and  information  regarding  the  implementation  of any stranded  cost
         recovery  mechanism  approved by the ACC. APS further agrees that while
         such  regulatory  assets are being  recovered as part of its customers'
         bills,  said bills shall  disclose that  regulatory  asset  recovery is
         contained therein.
                                                                          Page 4
<PAGE>
         e. APS and SRP will support  constitutional and legislative  amendments
         that eliminate unnecessary regulation of competitive electric services,
         but  still  provide  for  effective  state   certification   of  retail
         electricity suppliers.

         f. SRP will  propose  and  continue  to  support  before  its  Board of
         Directors,  and APS will  continue to propose  and  support  before the
         Arizona Corporation Commission, the stranded cost methodology described
         in Exhibit 4. The parties  understand that the ultimate  decisions will
         be  made  by the  SRP  governing  board  and  the  Arizona  Corporation
         Commission.

         g Neither APS nor Pinnacle West will knowingly participate, financially
         or otherwise, with any splinter group or organization which is designed
         for  the  overriding  purpose  of  taking  a  position  adverse  to the
         generally  known or  understood  interests of SRP at the state or local
         level.  SRP will not knowingly  participate,  financially or otherwise,
         with any  splinter  group or  organization  which is  designed  for the
         overriding  purpose of taking a position adverse to the generally known
         or  understood  interests  of APS at the  state  or  local  level.  The
         requirements  of this Section 5(g) shall begin on the Effective Date of
         this Memorandum of Agreement and shall end on December 31, 2006.

         h.  APS  will  not  take a  position  before  the  Arizona  Corporation
         Commission  on  efforts  by SRP or its  affiliate  New West  Energy  to
         compete in the current markets of public service corporations, nor will
         APS  challenge  the right of SRP and New West  Energy to compete in the
         current  markets  of  public  service   corporations  or  public  power
         entities.  SRP will not challenge the right of APS (or its  affiliates)
         to compete in the current  markets of public  service  corporations  or
         public power entities.  However, nothing in this section shall preclude
         either party from raising issues  regarding the terms and conditions of
         competitive  entry  which  are  generally   applicable  to  electricity
         suppliers,   or  the  other  party's  compliance  with  laws  generally
         applicable to electricity suppliers.

         i.  Neither APS nor SRP shall take any public  position on state issues
         contrary  to  the  specific  terms  or  the  manifest  spirit  of  this
         Memorandum of Agreement, or attempt to change the fundamental structure
         or  powers  of the  other,  as  existing  on the  Effective  Date.  The
         requirements  of this Section 5(i) shall begin on the Effective Date of
         this Memorandum of Agreement and shall end on December 31, 2006.

6. Federal Political Issues

With respect to federal issues relating to competition  between public power and
investor owned  utilities,  at this time the parties have reached these specific
agreements:
                                                                          Page 5
<PAGE>
         a. In a timely manner upon  execution of this  Memorandum of Agreement,
         APS will  prepare a letter to Senator  Frank  Murkowski  satisfactorily
         indicating  that  SRP and APS  have  resolved  differences  related  to
         capital  cost  issues,  and  indicating  that APS will not oppose those
         private use regulations currently pending before IRS.

         b. In a timely manner upon  execution of this  Memorandum of Agreement,
         APS and SRP will jointly  communicate,  and make joint personal  visits
         where appropriate,  with trade association(s) and federal policy makers
         to be  reasonably  identified  by SRP. APS will convey the messages set
         forth in point (a) above.

         c. Beginning on the Effective Date of this Memorandum of Agreement, APS
         and SRP will  affirmatively  support  the  right of  public  power  and
         investor-owned  utilities to seek tax-exempt pollution control bonds to
         the same degree in the  future,  as that issue may arise at the federal
         level during deliberations on electric industry deregulation.

         d. APS and SRP will work  together to  facilitate  the  formation of an
         interim  organization  for purposes of auditing  system  operations and
         resolving system  constraints on the Arizona  transmission  system. The
         employees  of  this  organization  would  report  to a  subset  of  the
         Southwest Regional  Transmission  Association until Desert Star or some
         other independent system operator  mechanism is satisfactorily  defined
         and in operation. The parties will financially support the formation of
         said  organization  and will propose that the costs of  organizing  and
         operating  the  transition  organization  will be shared by all Arizona
         market participants.

         e.  Neither  APS  nor  Pinnacle   West  will   knowingly   participate,
         financially or otherwise, with any splinter group or organization which
         is designed for the overriding  purpose of taking a position adverse to
         the  generally  known or  understood  interests  of SRP at the  federal
         level.  SRP will not knowingly  participate,  financially or otherwise,
         with any  splinter  group or  organization  which is  designed  for the
         overriding  purpose of taking a position adverse to the generally known
         or understood  interests of APS at the federal level.  The requirements
         of  this  Section  6(e)  shall  begin  on the  Effective  Date  of this
         Memorandum of Agreement and shall end on December 31, 2006.

         f. APS  will  limit  its  comments  to the  Federal  Energy  Regulatory
         Commission in regard to SRP's safe harbor filing to concerns related to
         code of conduct  issues,  and will otherwise  indicate that it takes no
         exception in that proceeding to the economic issues therein.

         g. Neither APS nor SRP shall take any public position on federal issues
         contrary  to  the  specific  terms  or  the  manifest  spirit  of  this
         Memorandum of 
                                                                          Page 6
<PAGE>
         Agreement,  or attempt to change the fundamental structure or powers of
         the other, as existing on the Effective Date. The  requirements of this
         Section 6(g) shall begin on the  Effective  Date of this  Memorandum of
         Agreement and shall end on December 31, 2006.

7. Transmission and Distribution Prices and Terms

To the extent not  contrary to future state or federal  regulatory  requirements
(1)  SRP  and  APS  shall  allow  access  to  their  respective  electric  power
transmission and distribution facilities under rates and terms and conditions of
service  that  are  nondiscriminatory,  cost  based,  just and  reasonable,  and
comparable to those charged by themselves  respectively for their own use of the
same  facilities,  (2) in  determining  rates  and  terms  of  transmission  and
distribution  service,  SRP shall  follow  the  procedures  set forth in Exhibit
Three, and (3) SRP shall propose and advocate pricing for transmission  services
that utilizes pricing  procedures and methodologies  that conform to the Federal
Power Act and the Federal Energy Regulatory  Commission's  applicable  published
decisions,  policies and  regulations,  to the extent  legally  possible.  SRP's
proposed  rates and terms  and  conditions  for  distribution  and  transmission
service shall be filed in sufficient time for their adoption by January 1, 1999,
or by the  start of  competition  in both the APS and SRP  service  territories,
whichever is later.  APS shall not object to the  inclusion in  transmission  or
distribution rates of costs necessary to support SRP's water delivery operations
in amounts consistent with historic  practices.  APS shall propose  distribution
and transmission  rates and terms and conditions of service  consistent with the
above principles.  However, both parties recognize that such rates and terms and
conditions are subject to regulation by the Arizona  Corporation  Commission and
the Federal Energy Regulatory Commission.

8. Obligation to Meet and Confer

In the event of a claimed  breach of the  provisions  of  Sections 3, 5, or 6 of
this  Memorandum of  Agreement,  the parties,  on demand of either party,  shall
timely meet and attempt, in good faith to resolve the dispute in a timely manner
before instituting litigation.

9. Remedies Upon Breach of This Memorandum of Agreement

         a.  Remedies  for breach of the  obligations  set forth in Section 1 of
         this Memorandum of Agreement:  The only  obligation  under Section 1 of
         this  Memorandum  of Agreement is for the  management of APS and SRP to
         present the  amendment to their  respective  governing  boards.  In the
         event that the amendment is not approved by both governing boards,  the
         parties  shall  attempt  to  renegotiate  this  entire   Memorandum  of
         Agreement, as provided in Section 1.

         b.  Remedies  for breach of the  obligations  set forth in Section 2 of
         this Memorandum of Agreement:  The only  obligation  under Section 2 of
         this
                                                                          Page 7
<PAGE>
         Memorandum of Agreement is for the management of APS and SRP to present
         the amendment to their respective  governing  boards. In the event that
         the  amendment is not approved by both  governing  boards,  the parties
         shall attempt to renegotiate  this entire  Memorandum of Agreement,  as
         provided in Section 2.

         c.  Remedies for breach of the  obligations  set forth in Sections 3, 4
         and 8 of this  Memorandum  of Agreement:  Remedies  shall be limited to
         specific enforcement of the obligation or injunctive relief.

         d. Remedies for breach of the obligations set forth in Sections 5 and 6
         of this Memorandum of Agreement:

                  i. Breach by APS - In the case of a material  breach by APS or
                  any action by Pinnacle  West which,  if performed by APS would
                  constitute a material  breach of the  obligations set forth in
                  Sections 5 and 6 of this Memorandum of Agreement,  the changes
                  to  Schedule  A of the Power  Coordination  Agreement,  as set
                  forth in Exhibit Two, shall terminate after APS has been given
                  notice  and has  failed to cure the  material  breach  after a
                  reasonable  opportunity  to do  so.  In  the  event  that  APS
                  disputes  the breach,  then SRP shall  continue to comply with
                  the  changes  to Service  Section A of the Power  Coordination
                  Agreement as set forth in Exhibit Two.  until a final judgment
                  or  resolution  determining  a  material  breach.  Upon  final
                  judgment or resolution determining a material breach, SRP will
                  be owed  damages  from  APS in the  amount  of the  difference
                  between  the  Exhibit Two  prices,  and the  contract  without
                  Exhibit Two, from the date of material  breach until the final
                  judgment or determination.  SRP shall otherwise have no remedy
                  at law or equity for such breach.

                  ii. Breach by SRP - In the case of a material breach by SRP of
                  the  obligations  set  forth  in  Section  5  and  6  of  this
                  Memorandum of Agreement, APS shall have a thirty day option to
                  terminate  Schedule  A of the  Power  Coordination  Agreement,
                  after SRP has been  given  notice  and has  failed to cure the
                  material  breach after a reasonable  opportunity  to do so. In
                  the  event  that SRP  disputes  the  breach,  then  APS  shall
                  continue to comply with  Schedule A until a final  judgment or
                  resolution  determining a material breach. Upon final judgment
                  or resolution  determining a material breach, APS will be owed
                  damages from SRP in the amount of the  difference  between the
                  market prices, and the contract price, from the date of breach
                  until the final judgment or determination. APS shall otherwise
                  have no remedy at law or equity for such material breach.

         e. SRP or APS may bring a judicial  action to enforce Section 7 of this
         Memorandum of Agreement and shall have such remedies as provided by law
         and equity.
                                                                          Page 8
<PAGE>
10. Miscellaneous Provisions

         a. The  provisions  hereof shall extend to and bind the  successors and
         assigns  of  the  parties  hereto,   and  those  subsidiaries  of  each
         substantially engaged in the generation, transmission,  distribution or
         sale of electricity.

         b. The failure by SRP or APS at any time or times  hereafter to require
         strict performance by the other of any of the undertakings,  agreements
         or covenants contained in this Memorandum of Agreement shall not waive,
         affect or diminish any right of SRP or APS  hereunder to demand  strict
         compliance  and  performance  therewith.   None  of  the  undertakings,
         agreements  or  covenants  of SRP  and APS  under  this  Memorandum  of
         Agreement  shall be deemed to have been  waived  unless  such waiver is
         evidenced by an instrument in writing signed by the party to be charged
         specifying such waiver.

         c. All notices  shall be in writing and deemed  properly  given or made
         upon receipt if  delivered by  registered  or certified  mail,  postage
         prepaid to the following addresses:

                  If to APS to:

                           Arizona Public Service Company
                           400 North Fifth Street
                           Phoenix, Arizona 85004
                           Attn.  Corporate Counsel
                           Telecopy Number  (602) 250-3002
                           Telephone Number  (602) 250-3252

                  If to SRP to:

                           Salt River Project Agricultural Improvement and
                              Power District
                           P.O. Box 52025
                           Phoenix, Arizona 85072
                           Attn:  Corporate Secretary
                           Telecopy Number  (602) 236-2188
                           Telephone Number (602) 236-5005
                                                                          Page 9
<PAGE>
AGREED TO AS OF THE EFFECTIVE DATE:

APS

ARIZONA PUBLIC SERVICE COMPANY


         By       RICHARD SNELL
           ------------------------------
         Richard Snell
         Chairman of the Board

         Date     4/25/98
             ----------------------------


         By       WILLIAM J. POST
           ------------------------------
         William J. Post
         Chief Executive Officer

         Date     4/25/98
             ----------------------------

SRP

SALT RIVER PROJECT AGRICULTURAL
IMPROVEMENT AND POWER DISTRICT


         By       RICHARD H. SILVERMAN
           ------------------------------
         Richard H. Silverman
         General Manager

         Date     April 25, 1998
             ----------------------------
                                                                         Page 10
<PAGE>
                                   Exhibit One

                          SECOND SUPPLEMENTAL AGREEMENT
                          -----------------------------

         THIS SECOND SUPPLEMENTAL AGREEMENT,  made by and between ARIZONA PUBLIC
SERVICE COMPANY  ("APS"),  and SALT RIVER PROJECT  AGRICULTURAL  IMPROVEMENT AND
POWER DISTRICT ("SRP");

                                   WITNESSETH:

         WHEREAS,  the parties  hereto  heretofore  entered into an Agreement of
August 31, 1955, providing, inter alia, certain restrictions in regard to areas,
customers and types of electric load to be served by each;

         WHEREAS, the parties executed a Supplemental Agreement,  dated December
1, 1972,  removing any  restrictions  regarding  sales,  donation or delivery of
electric power and energy at wholesale;

         WHEREAS,  the parties  desire to further  amend the Agreement of August
31,  1955,  and  the  December  1,  1972  Supplemental   Agreement  (hereinafter
collectively referred to as the "Agreement");

         NOW,  THEREFORE,  in  consideration  of the  premises,  and  for  other
valuable consideration,  the sufficiency of which is hereby acknowledged by each
party hereto, the parties hereby agree as follows:

                                   AGREEMENT:

         1.  Notwithstanding  any  other  provision  of  the  Agreement  to  the
contrary,  nothing in the Agreement  shall prohibit  either party from providing
any electric supply or other  non-distribution  service to the extent authorized
or  permitted by law. For  purposes of this  Amendment,  the term  "distribution
services"  shall have the  definition  given the term "local  distribution"  and
"local   distribution   ancillary  services"  under  Federal  Energy  Regulatory
Commission order number 888 [Order No. 888, 61 Fed. Reg.
21,540 (May 10, 1996)].

         2. The provisions of Article X of the Agreement  shall not apply to any
electric generation,  transmission or other non-distribution systems, facilities
or assets.

         3. The  provisions of this Second  Supplemental  Agreement  will become
effective as of January 1, 1999.

         4. Except as expressly provided in this Second Supplemental  Agreement,
the Agreement will remain unchanged and in full force and effect.
                                                                         Page 11
<PAGE>
         IN WITNESS  WHEREOF,  the  respective  Parties  have caused this Second
Supplemental   Agreement  to  be  executed  on  their  behalf  this  ____day  of
____________, 1998.


                                    ARIZONA PUBLIC SERVICE COMPANY



                                    By _________________________________
                                                  President


ATTEST:

- ----------------------------------
Secretary



                                    SALT RIVER PROJECT AGRICULTURAL 
                                    IMPROVEMENT AND POWER DISTRICT



                                    By _________________________________
                                                  President


ATTEST AND COUNTERSIGN:


- -----------------------------------
Secretary
                                                                         Page 12
<PAGE>
                                   Exhibit Two

                                Supplement No. 4
                              to Service Schedule A
                       of the Power Coordination Agreement
                              of September 15, 1955

This Supplement  Number 4 is agreed upon as a part of Service  Schedule A of the
Power Coordination Agreement between Salt River Project Agricultural Improvement
and Power District and Arizona Public Service Company, dated September 15, 1955,
as previously supplemented.

In  consideration  of the  resolution of disputes  between the parties as to the
effect  of the  institution  of  competition  in the  electric  industry  on the
territory and contingent power purchase obligations under the Power Coordination
Agreement  pursuant to the  Memorandum  of Agreement  dated April 25, 1998,  the
parties agree as follows:

1. The Effective Date of this  Supplement No. 4 shall be the later of January 1,
1999,  or the first day of the next month  following  the Start of  Competition,
which is defined as the date upon which both APS and SRP have opened any part of
their retail load to competition in the sale of electricity.

2. The parties confirm the power purchase  obligations and pricing  formulas set
forth in Service  Schedule A, subject only to the demand charges and the revised
methodology of calculating  territorial  equivalent  power capacity set forth in
Attachment One to this  Supplement  No. 4. Beginning on the Effective  Date, and
ending on December 31, 2006,  demand  charges shall be calculated as provided in
Attachment One to this Supplement No. 4. The parties further agree, beginning on
the  Effective  Date,  to calculate  territorial  equivalent  power  capacity as
provided in Attachment One to this Supplement No. 4.

3. If control of APS or Pinnacle West, or any successor to such control pursuant
to this section, changes by merger,  purchase,  acquisition of voting securities
by one or more  affiliated  persons  or  entities,  or other  event or series of
coordinated events, the successor or affiliated successors to such control will,
within  ten  days  after  acquiring  such  control,  deliver  to  SRP a  written
agreement,  reasonably satisfactory to SRP, to be bound by all of the provisions
of the  Memorandum  of  Agreement,  failing which the demand prices agreed to in
this Supplement No. 4 shall thereafter  revert back to the level that would have
been in effect absent this  Supplement No. 4 to Service  Schedule A of the Power
Coordination  Agreement.  For this purpose,  "control"  means  possession of the
power, however exercised and without regard to shareholder meeting requirements,
staggered  terms  of  director  office  or  similar  considerations,  to elect a
majority of the directors of the corporation in question (APS,  Pinnacle West or
successor).
                                                                         Page 13
<PAGE>
4.  Beginning on December 31,  2006,  APS shall have an option to terminate  the
territory and  contingent  power  purchase  obligations  upon five years written
notice.

5. SRP may not  exercise  its  existing  three  year  option  to  terminate  the
territory and contingent power purchase  agreement until after December 31, 2003
(which would result in the earliest  possible  termination  date of December 31,
2006).

6. Except as provided herein,  Service  Schedule A, as previously  supplemented,
shall remain in full force and effect.

7. This  Supplement  No. 4 and Schedule A are subject to termination as provided
in the Memorandum of Agreement between APS and SRP dated April 25, 1998.

                                    ARIZONA PUBLIC SERVICE COMPANY



                                    By _________________________________
                                                 President

ATTEST:

- ----------------------------------
Secretary


                                    SALT RIVER PROJECT AGRICULTURAL
                                    IMPROVEMENT AND POWER DISTRICT



                                    By _________________________________
                                                 President


ATTEST AND COUNTERSIGN:

- -----------------------------------
Secretary
                                                                         Page 14
<PAGE>
 Attachment One
                                       to
                               Supplement Number 4
                               Service Schedule A
                          Power Coordination Agreement

            Future Capacity Requirements and Estimated Demand Charges
            ---------------------------------------------------------

- --------------------------------------------------------------------------------
  Calendar      Jan-May          Jan-May          June-Dec         June-Dec
    Year       Demand MWs     Demand $/kW-Mo     Demand MWs     Demand $/kW-Mo
- --------------------------------------------------------------------------------
    1999          316              0.79              322             0.87
    2000          322              1.46              329             1.54
    2001          329              2.13              336             2.21
    2002          336              2.81              343             2.87
    2003          343              3.45              350             3.50
    2004          350              4.10              357             4.14
    2005          357              4.48              364             4.52
    2006          364              4.84              372             4.88
- --------------------------------------------------------------------------------

1. This chart is an estimate of future demand  prices.  The estimate is based on
an assumed $5.23 base on January 1, 1999, and an assumed 4.1% annual  escalation
rate thereafter.

2. Actual prices will be adjusted based on the actual  escalation rates pursuant
to Schedule A, Section 8 of the Power Coordination Agreement.

3. The territorial  equivalent  power capacity will be 254 MW beginning with the
6/1/98 - 5/31/99 contract year and will escalate at 2.5%  thereafter,  including
during the periods after December 31, 2006.

4. Until the first of the next month following the Start of Competition,  demand
rates  will be  calculated  according  to  Schedule  A,  Section  8 of the Power
Coordination  Agreement.  The APS demand charge for the revised  billing  period
will be paid monthly. The demand payment will be equal to the territorial demand
plus  the  contingent  demand,  multiplied  by a per  kW  -month  demand  charge
calculated as specified above.

5. The demand  charges after  December 31, 2006 will be calculated  according to
Schedule A, Section 8 of the Power Coordination Agreement.

6. Energy charges are not changed by this Supplement No. 4.
                                                                         Page 15
<PAGE>
                                  Exhibit Three



             APS/SRP AMENDMENT TO HB 2663 ELECTRIC POWER COMPETITION

Page 4

     Line 5 after the period insert "NOTWITHSTANDING SECTION 30-803(A), A PUBLIC
          POWER ENTITY MAY  COORDINATE  THE OPENING OF ITS SERVICE  TERRITORY TO
          COMPETITION WITH THE SCHEDULE SET BY THE COMMISSION FOR PUBLIC SERVICE
          CORPORATIONS."

     Between lines 5 and 6 insert "B. WHEN DETERMINING  TERMS AND CONDITIONS FOR
          CUSTOMER  SELECTION,   COMPLAINT   RESOLUTION,   CONSUMER  PROTECTION,
          STRANDED COST,  DISTRIBUTION SERVICE RATES AND CHARGES, SYSTEM BENEFIT
          CHARGES,  AND OTHER RELATED  MATTERS AS  DETERMINED IN THE  REASONABLE
          DISCRETION  OF THE  GOVERNING  BODY OF THE PUBLIC  POWER  ENTITY,  THE
          GOVERNING BODY OF THE PUBLIC POWER ENTITY SHALL, AT A MINIMUM:

          1.   PROVIDE PUBLIC NOTICE OF PROPOSED TERMS AND CONDITIONS STATING:

               a.   THAT THE POWER ENTITY IS ADOPTING  TERMS AND  CONDITIONS FOR
                    COMPETITION  IN  THE  RETAIL  SALE  OF  ELECTRIC  GENERATION
                    SERVICE.

               b.   THAT THE  INFORMATION  IN  SUBSECTION  2 OF THIS  SECTION IS
                    AVAILABLE FOR INSPECTION.

               c.   THAT THE GOVERNING BODY OF THE PUBLIC POWER ENTITY WILL HOLD
                    A  SPECIAL  MEETING  AS  REQUIRED  BY  SUBSECTION  3 OF THIS
                    SECTION AND STATING THE DATE, TIME AND PLACE OF THE MEETING.

          2.   PROVIDE THAT FOR A PERIOD  BEGINNING  WITH THE PUBLIC  NOTICE AND
               UNTIL  TEN DAYS  AFTER  THE CLOSE OF THE  MEETING  PRESCRIBED  IN
               SUBSECTION 3 OF THIS SECTION,  THE PUBLIC POWER ENTITY SHALL MAKE
               AVAILABLE TO INTERESTED  PERSONS,  AT ITS MAIN OFFICE,  PERTINENT
               INFORMATION, INCLUDING:

               a.   MANAGEMENT'S   RECOMMENDATION   FOR   PROPOSED   TERMS   AND
                    CONDITIONS.

               b.   RELEVANT FINANCIAL AND OTHER INFORMATION AS MAY BE PERTINENT
                    AND UPON WHICH THE MANAGEMENT  PROPOSAL IS BASED. THE PUBLIC
                    POWER ENTITY SHALL TIMELY SUPPLEMENT SUCH INFORMATION AS MAY
                    BE REASONABLY REQUESTED BY ANY INTERESTED PERSON AND
                                                                         Page 16
<PAGE>
                    WILL ANSWER  REASONABLE  QUESTIONS  POSED BY ANY  INTERESTED
                    PERSON.

               c.   CURRENT TERMS AND CONDITIONS, IF ANY.

               d.   REPORTS OF CONSULTANTS, IF ANY.

          3.   PROVIDE THAT  INTERESTED  PERSONS MAY FILE WRITTEN  COMMENTS WITH
               THE PUBLIC POWER ENTITY AT ANY TIME DURING THE PERIOD  PRESCRIBED
               IN SUBSECTION 2 OF THIS SECTION.  A MEETING OF THE GOVERNING BODY
               OF THE PUBLIC  POWER  ENTITY  SHALL BE HELD NO SOONER THAN THIRTY
               DAYS AND NO LATER  THAN  NINETY  DAYS  AFTER  THE  PUBLIC  NOTICE
               REFERRED TO IN SUBSECTION 1 OF THIS SECTION. AT THE MEETING,  THE
               GOVERNING BODY OF THE PUBLIC POWER ENTITY SHALL:

               a.   AFFORD  REPRESENTATIVES  OF  MANAGEMENT  OF THE PUBLIC POWER
                    ENTITY AN  OPPORTUNITY  TO EXPLAIN  THE  PROPOSED  TERMS AND
                    CONDITIONS,  THE CRITERIA FOR SUCH TERMS AND  CONDITIONS AND
                    ANSWER QUESTIONS.

               b.   AFFORD ANY  CONSULTANTS  RETAINED BY THE PUBLIC POWER ENTITY
                    AN  OPPORTUNITY  TO  COMMENT  UPON THE  PROPOSED  TERMS  AND
                    CONDITIONS.

               c.   AFFORD INTERESTED PERSONS A REASONABLE OPPORTUNITY TO SUBMIT
                    WRITTEN COMMENTS AND QUESTIONS OR MAKE ORAL  PRESENTATION OF
                    VIEWS, QUESTIONS AND COMMENTS.

          4.   FOLLOWING REVIEW OF THE INFORMATION AND COMMENTS  GATHERED IN THE
               COURSE  OF THE  PROCEDURES  DESCRIBED  IN  SUBSECTION  3 OF  THIS
               SECTION THE GOVERNING  BODY OF THE PUBLIC POWER ENTITY SHALL MAKE
               ITS DECISION ON THE PROPOSED TERMS AND CONDITIONS.

     C.   ALL FINAL  DECISIONS OF THE GOVERNING  BODY OF THE PUBLIC POWER ENTITY
          REGARDING  TERMS AND  CONDITIONS  FOR  CUSTOMER  SELECTION,  COMPLAINT
          RESOLUTION,  CONSUMER PROTECTION,  STRANDED COST, DISTRIBUTION SERVICE
          RATES AND CHARGES,  SYSTEM BENEFIT CHARGES,  AND OTHER RELATED MATTERS
          AS DETERMINED IN THE  REASONABLE  DISCRETION OF THE GOVERNING  BODY OF
          THE PUBLIC POWER ENTITY SHALL:

          1. BE IN WRITING
          2. STATE THE FACTUAL AND LEGAL BASIS FOR THE DECISION, AND
          3. STATE THE EFFECTIVE DATE OF THE DECISION, IF ANY.

     Line 12 before the period insert ", TO ELECTRICITY  SUPPLIERS  CERTIFICATED
          BY THE COMMISSION PURSUANT TO SECTION 40-207"

     Line 13 strike "EXISTING", before "SERVICE" insert "EXCLUSIVE DISTRIBUTION"

     Line 17 after "CONTINUE" insert "TO HAVE THE EXCLUSIVE RIGHT"
                                                                         Page 17
<PAGE>

     After line 19 insert "D. PUBLIC POWER ENTITIES SHALL PERMIT THE AGGREGATION
          OF LOADS OF MULTIPLE CUSTOMERS."

     Strike lines 20 through 22

Page 5

     Line 11 strike "A PEAK DEMAND OF TWENTY KILOWATTS"; after "WITH" insert "AN
          ANNUAL USAGE OF ONE HUNDRED THOUSAND KILOWATT HOURS"

     Line 20 after "PRACTICES" insert "OF PUBLIC POWER ENTITIES"

Page 6

     Line 21 strike "PEAK DEMAND IS TWENTY"

     Line 22 strike "KILOWATTS" and insert "ANNUAL USAGE IS ONE HUNDRED THOUSAND
          KILOWATT HOURS"

     Line 28  strike  "AGGREGATED  PEAK  LOAD IS TWENTY  KILOWATTS"  and  insert
          "ANNUAL USAGE IS ONE HUNDRED THOUSAND KILOWATT HOURS"

     Line 37 after "FAILURE" insert "OF A PUBLIC POWER ENTITY"

Page 7

     Line 40 strike "AN"; after "GIVE" insert "A MATERIAL"

Page 8

     Line 2  after  the  period  insert  "DETERMINATIONS  MADE BY  PUBLIC  POWER
          ENTITIES  UNDER THIS SECTION MAY BE CHALLENGED  THROUGH THE PROCEDURES
          PROVIDED IN SECTION 39-121.02."

     Between lines 2 and 3 insert three new sections:

     Section ___. Section 30-810, Arizona Revised Statutes is inserted:

     30-810 Application for rehearing; effect; decision

     A.   AFTER ANY FINAL  DECISION IS MADE BY THE GOVERNING  BODY OF THE PUBLIC
          POWER ENTITY  REGARDING  TERMS AND CONDITIONS FOR CUSTOMER  SELECTION,
          COMPLAINT RESOLUTION, CONSUMER PROTECTION STRANDED COSTS, DISTRIBUTION
          SERVICE RATES AND CHARGES,  SYSTEM BENEFIT CHARGES,  AND OTHER RELATED
          MATTERS AS  DETERMINED IN THE  REASONABLE  DISCRETION OF THE GOVERNING
          BODY OF THE PUBLIC  POWER  ENTITY,  OR  REGARDING  COMPLIANCE  WITH AN
          INTERGOVERNMENTAL  AGREEMENT MADE UNDER THE PROVISION OF THIS CHAPTER,
          ANY PARTY TO THE  ACTION OR  PROCEEDING  OR THE  ATTORNEY  GENERAL  ON
          BEHALF OF THE STATE MAY APPLY FOR A REHEARING OF ANY MATTER DETERMINED
          IN THE ACTION OR  PROCEEDING  AND  SPECIFIED  IN THE  APPLICATION  FOR
          REHEARING  WITHIN  TWENTY  DAYS  OF  ENTRY  OF  THE  DECISION.  UNLESS
          OTHERWISE ORDERED, THE FILING OF SUCH AN APPLICATION DOES NOT STAY THE
                                                                         Page 18
<PAGE>
          DECISION OF THE  GOVERNING  BODY OF THE PUBLIC  POWER  ENTITY.  IF THE
          GOVERNING  BODY  OF  THE  PUBLIC  POWER  ENTITY  DOES  NOT  GRANT  THE
          APPLICATION  WITHIN TWENTY DAYS, IT IS DEEMED DENIED. IF THE GOVERNING
          BODY OF THE PUBLIC POWER ENTITY GRANTS THE APPLICATION,  THE GOVERNING
          BODY OF THE PUBLIC  POWER ENTITY  SHALL  PROMPTLY  HEAR THE MATTER AND
          DETERMINE IT WITHIN TWENTY DAYS AFTER THE FINAL SUBMISSION.

     B.   NO CLAIM ARISING FROM ANY DECISION OF THE GOVERNING BODY OF THE PUBLIC
          POWER ENTITY  REGARDING  TERMS AND CONDITIONS FOR CUSTOMER  SELECTION,
          COMPLAINT   RESOLUTION,    CONSUMER   PROTECTION,    STRANDED   COSTS,
          DISTRIBUTION  SERVICE RATES AND CHARGES,  SYSTEM BENEFIT CHARGES,  AND
          OTHER RELATED  MATTERS AS DETERMINED IN THE  REASONABLE  DISCRETION OF
          THE GOVERNING BODY OF THE PUBLIC POWER ENTITY, OR REGARDING COMPLIANCE
          WITH AN  INTERGOVERNMENTAL  AGREEMENT MADE UNDER THE PROVISION OF THIS
          CHAPTER SHALL ACCRUE IN ANY COURT TO ANY PARTY,  OR THE STATE,  UNLESS
          THE PARTY,  OR THE STATE,  MAKES,  BEFORE  THE  EFFECTIVE  DATE OF THE
          DECISION, APPLICATION TO THE GOVERNING BODY OF THE PUBLIC POWER ENTITY
          FOR REHEARING.

     C.   THE APPLICATION  SHALL SET FORTH  SPECIFICALLY THE GROUNDS ON WHICH IT
          IS BASED,  AND NO PERSON,  NOR THE  STATE,  SHALL IN ANY COURT URGE OR
          RELY ON ANY GROUND NOT SET FORTH IN THE APPLICATION.

     D.   AN  APPLICATION  FOR  REHEARING  SHALL  NOT  EXCUSE  ANY  PERSON  FROM
          COMPLYING WITH AND OBEYING ANY DECISION,  OR ANY  REQUIREMENTS  OF ANY
          DECISION OF THE GOVERNING  BODY OF THE PUBLIC POWER ENTITY  THERTOFORE
          MADE,  OR OPERATE IN ANY MANNER TO STAY OR  POSTPONE  THE  ENFORCEMENT
          THEREOF,  EXCEPT IN SUCH  CASES AND UPON SUCH  TERMS AS THE  GOVERNING
          BODY OF THE PUBLIC POWER ENTITY DIRECTS.

     E.   IF, AFTER A REHEARING AND A CONSIDERATION OF ALL THE FACTS,  INCLUDING
          THOSE ARISING SINCE THE MAKING OF THE DECISION,  THE GOVERNING BODY OF
          THE PUBLIC POWER  ENTITY FINDS THAT THE ORIGINAL  DECISION OR ANY PART
          THEREOF IS IN ANY RESPECT UNJUST OR UNWARRANTED, OR SHOULD BE CHANGED,
          THE GOVERNING BODY OF THE PUBLIC POWER ENTITY MAY ABROGATE, CHANGE, OR
          MODIFY THE  DECISION,  AND SUCH DECISION HAS THE SAME FORCE AND EFFECT
          AS AN  ORIGINAL  DECISION,  BUT  SHALL  NOT  AFFECT  ANY  RIGHT OR THE
          ENFORCEMENT  OF ANY RIGHT  ARISING  FROM OR BY VIRTUE OF THE  ORIGINAL
          DECISION,  UNLESS SO DECIDED BY THE GOVERNING BODY OF THE PUBLIC POWER
          ENTITY.
                                                                         Page 19
<PAGE>
     Section ___. Section 30-811, Arizona Revised Statutes is inserted:

     30-811 Action to set  aside or modify  certain  decisions  of public  power
          entities; filing; limitation; superior court

     A.   ANY PARTY IN INTEREST, OR THE ATTORNEY GENERAL ON BEHALF OF THE STATE,
          BEING  DISSATISFIED WITH A FINAL DECISION BY THE GOVERNING BODY OF THE
          PUBLIC  POWER  ENTITY  REGARDING  TERMS AND  CONDITIONS  FOR  CUSTOMER
          SELECTION, COMPLAINT RESOLUTION,  CONSUMER PROTECTION, STRANDED COSTS,
          DISTRIBUTION  SERVICE RATES AND CHARGES,  SYSTEM BENEFIT CHARGES,  AND
          OTHER RELATED  MATTERS AS DETERMINED IN THE  REASONABLE  DISCRETION OF
          THE GOVERNING BODY OF THE PUBLIC POWER ENTITY, OR REGARDING COMPLIANCE
          WITH AN INTERGOVERNMENTAL  AGREEMENT MADE UNDER THE PROVISIONS OF THIS
          CHAPTER,  MAY  WITHIN  THIRTY  DAYS  AFTER A  REHEARING  IS  DENIED OR
          GRANTED, AND NOT AFTERWARDS,  COMMENCE AN ACTION IN THE SUPERIOR COURT
          IN THE COUNTY IN WHICH THE  GOVERNING  BODY OF THE PUBLIC POWER ENTITY
          HAS ITS OFFICE,  AGAINST THE GOVERNING BODY OF THE PUBLIC POWER ENTITY
          AS A DEFENDANT,  TO VACATE, SET ASIDE, AFFIRM IN PART, REVERSE IN PART
          OR REMAND WITH  INSTRUCTIONS TO THE GOVERNING BODY OF THE PUBLIC POWER
          ENTITY SUCH  DECISION ON THE GROUND THAT THE  VALUATION,  RATE,  JOINT
          RATE, TOLL, FARE, CHARGE OR FINDING, RULE, CLASSIFICATION OR SCHEDULE,
          PRACTICE, DEMAND, REQUIREMENT, ACT OR SERVICE PROVIDED IN THE DECISION
          IS UNLAWFUL,  OR THAT ANY RULE,  PRACTICE,  ACT OR SERVICE PROVIDED IN
          THE DECISION IS UNREASONABLE.  THE ANSWER OF THE GOVERNING BODY OF THE
          PUBLIC POWER ENTITY SHALL BE SERVED AND FILED WITHIN TWENTY DAYS AFTER
          SERVICE OF THE  COMPLAINT,  WHEREUPON THE ACTION SHALL BE AT ISSUE AND
          READY FOR TRIAL  UPON TEN DAYS'  NOTICE TO EITHER  PARTY.  THE  ACTION
          SHALL  BE TRIED  AND  DETERMINED  AS OTHER  CIVIL  ACTIONS  EXCEPT  AS
          PROVIDED IN THIS SECTION.

     B.   IF THE GOVERNING BODY OF THE PUBLIC POWER ENTITY RESCINDS THE DECISION
          COMPLAINED  OF, THE ACTION SHALL BE  DISMISSED,  AND IF THE  GOVERNING
          BODY OF THE  PUBLIC  POWER  ENTITY  ALTERS,  MODIFIES  OR  AMENDS  THE
          DECISION, THE ALTERED,  MODIFIED OR AMENDED DECISION SHALL REPLACE THE
          ORIGINAL  DECISION  COMPLAINED OF, AND JUDGMENT SHALL BE GIVEN THEREON
          AS THOUGH MADE BY THE GOVERNING BODY OF THE PUBLIC POWER ENTITY IN THE
          FIRST INSTANCE.

     C.   THE  TRIAL  SHALL  CONFORM,  AS  NEARLY  AS  POSSIBLE,  AND  EXCEPT AS
          OTHERWISE  PRESCRIBED  BY THIS  SECTION,  TO  OTHER  TRIALS  IN  CIVIL
          ACTIONS. JUDGMENT SHALL BE GIVEN AFFIRMING,
                                                                         Page 20
<PAGE>
          MODIFYING OR SETTING ASIDE THE ORIGINAL OR AMENDED DECISION.

     D.   EITHER  PARTY TO THE ACTION  WITHIN  THIRTY DAYS AFTER THE JUDGMENT OF
          THE SUPERIOR COURT IS GIVEN, MAY APPEAL TO THE COURT OF APPEALS.

     E.   IN ALL TRIALS,  ACTIONS AND  PROCEEDINGS  THE BURDEN OF PROOF SHALL BE
          UPON THE PARTY  ADVERSE  TO THE  GOVERNING  BODY OF THE  PUBLIC  POWER
          ENTITY OR  SEEKING  TO VACATE  OR SET ASIDE ANY  DETERMINATION  OF THE
          GOVERNING BODY OF THE PUBLIC POWER ENTITY TO SHOW THAT IT IS UNLAWFUL,
          THAT IS NOT  SUPPORTED BY  SUBSTANTIAL  EVIDENCE OR THAT THE GOVERNING
          BODY OF THE PUBLIC POWER ENTITY ABUSED ITS DISCRETION.

     F.   EXCEPT AS PROVIDED  BY THIS  SECTION NO COURT OF THIS STATE SHALL HAVE
          JURISDICTION  TO  ENJOIN,  RESTRAIN,  SUSPEND,  DELAY  OR  REVIEW  ANY
          DECISION  OF THE  GOVERNING  BODY OF THE PUBLIC  POWER  ENTITY,  OR TO
          ENJOIN  RESTRAIN OR INTERFERE  WITH THE  GOVERNING  BODY OF THE PUBLIC
          POWER ENTITY IN THE PERFORMANCE OF ITS OFFICIAL DUTIES,  AND THE RULES
          OR DECREES  FIXED BY THE  GOVERNING  BODY OF THE PUBLIC  POWER  ENTITY
          SHALL REMAIN IN FORCE  PENDING THE DECISION OF THE COURTS,  BUT A WRIT
          OF MANDAMUS  SHALL LIE FROM THE SUPREME COURT TO THE GOVERNING BODY OF
          THE PUBLIC POWER ENTITY IN CASES AUTHORIZED BY LAW.

     Section ___. Section 30-812, Arizona Revised Statutes is inserted:

     30-812 Application of antitrust statutes

     NOTWITHSTANDING  ANY OTHER  PROVISIONS OF LAW, THE  PROVISIONS OF TITLE 44,
          CHAPTER 10,  ARTICLE 1 SHALL  APPLY TO THE  PROVISION  OF  COMPETITIVE
          ELECTRIC GENERATION SERVICE BY PUBLIC POWER ENTITIES.

Page 11

     Line 31 strike "CURRENT SERVICE";  before  "TERRITORIES"  insert "EXCLUSIVE
          DISTRIBUTION SERVICE"

     Line 38 after "PROVIDE" insert ", ON AN EXCLUSIVE BASIS,"

Page 12

     Line 12 strike "PEAK DEMAND IS TWENTY  KILOWATTS"  and insert "ANNUAL USAGE
          IS ONE HUNDRED THOUSAND KILOWATT HOURS"

     Line 20 strike "PEAK DEMAND IS TWENTY"

     Line 21 strike "KILOWATTS" and insert "ANNUAL USAGE IS ONE HUNDRED THOUSAND
          KILOWATT HOURS"

     Line 36 strike "MAILINGS FOR"

     Strike lines 37 through 41
                                                                         Page 21
<PAGE>
Page 13

     Afterline 24  insert  "6.  PERMIT  THE  AGGREGATION  OF LOADS  OF  MULTIPLE
          CUSTOMERS."

     Strike lines 25 through 28.

     Line 35 strike "AGGREGATED PEAK"

     Line 36 strike "LOAD OF TWENTY KILOWATTS";  and insert "ANNUAL USAGE OF ONE
          HUNDRED THOUSAND KILOWATT HOURS"

Page 15

     Line 39 strike "EXCEPT"

     Line 40 strike "TO THE EXTENT  THAT THE  CONDUCT OR  ACTIVITY IS SUBJECT TO
          COMPETITION,"

     Line 43 after  the  period  insert  "THIS  SECTION  SHALL  NOT APPLY TO THE
          PROVISION OF COMPETITIVE ELECTRIC GENERATION SERVICE."

Page 16

     Between lines 32 and 33 insert five new sections:

     Section ___. Section 41-2531,  Arizona Revised Statutes is amended to read:

     41-2531 Definitions

     In this article, unless the context otherwise requires:

     1.   "Bidder  prequalification"  means determining in accordance with rules
          adopted pursuant to this chapter that a prospective  bidder or offeror
          satisfies the criteria for being included on the bidder's list.

     2.   "CONFIDENTIAL  INFORMATION"  MEANS TRADE SECRETS OR OTHER  PROPRIETARY
          INFORMATION  BELONGING TO A COMPETING  BIDDER OR OFFEROR  WHICH IS NOT
          PUBLICLY  KNOWN,  THE DISCLOSURE OF WHICH IS IN THE SOLE DISCRETION OF
          THE  COMPETING  BIDDER OR OFFEROR  AND WHICH IS  INCLUDED  IN A BID OR
          PROPOSAL FOR THE LIMITED  PURPOSE OF  RESPONDING TO THE BID OR REQUEST
          FOR PROPOSAL WITH AN  EXPECTATION OF CONTINUED  PRIVACY.  CONFIDENTIAL
          INFORMATION MAY NOT BE DISCLOSED WITHOUT THE EXPRESS PERMISSION OF THE
          COMPETING BIDDER OR OFFEROR TO WHOM IT BELONGS.

     3.   "Cost-reimbursement   contract"   means  a  contract   under  which  a
          contractor is reimbursed for costs which are reasonable, allowable and
          allocable in accordance  with the contract terms and the provisions of
          this chapter, and a fee, if provided for in the contract.

     4.   "Demonstration  project" means a project in which a vendor  supplies a
          service or material to this state for which the state does not pay but
          for which this state may be obligated to provide  routine support such
          as utility cost and operating personnel.

     5.   "ESSENTIAL  GOODS  AND  SERVICES"  MEANS  THOSE  GOODS  AND  SERVICES,
          INCLUDING THE PROVISION OF ELECTRIC  SERVICE,  WHICH ARE NECESSARY FOR
          THE OPERATION OF GOVERNMENT  
                                                                         Page 22
<PAGE>
          AND/OR FOR THE PUBLIC HEALTH,  SAFETY AND WELFARE, AND FOR WHICH IT IS
          PRESUMPTIVE  THAT THE COMPETITIVE  BIDDING PROCESS IS NOT PRACTICAL OR
          ADVANTAGEOUS  TO THE  STATE  AND  FOR  WHICH  THE  COMPETITIVE  SEALED
          PROPOSAL PROCESS SHALL BE USED IN PLACE OF THE COMPETITIVE  SEALED BID
          PROCESS.

     6.   "Established catalogue price" means the price included in a catalogue,
          price list, schedule or other form that:

          (a)  Is  regularly  maintained  by  a  manufacturer,   distributor  or
               contractor.

          (b)  Is either  published or otherwise  available  for  inspection  by
               customers.

          (c)  States prices at which sales are currently or were last made to a
               significant   number  of  any   category   of  buyers  or  buyers
               constituting  the  general  buying  public for the  materials  or
               services involved.

     7.   "Invitation  for  bids"  means  all  documents,  whether  attached  or
          incorporated  by  reference,  which  are used for  soliciting  bids in
          accordance with the procedures prescribed in section 41-2533.

     8.   "Multistep  sealed bidding" means a two phase process  consisting of a
          technical  first phase  composed of one or more steps in which bidders
          submit unpriced  technical  offers to be evaluated by this state and a
          second  phase  in which  those  bidders  whose  technical  offers  are
          determined  to be  acceptable  during the first phase have their price
          bids considered.

     9.   "Paper" means  newspaper,  high grade office paper,  fine paper,  bond
          paper, offset paper,  xerographic paper,  duplicator paper and related
          types of cellulosic  material containing not more than ten per cent by
          weight or volume of noncellulosic material such as laminates, binders,
          coatings or saturants.

     10.  "Paper  product"  means paper items or  commodities,  including  paper
          napkins,  towels,  corrugated  paper and related  types of  cellulosic
          products  containing not more than ten per cent by weight or volume of
          noncellulosic  material  such  as  laminates,   binders,  coatings  or
          saturates.

     11.  "Post-consumer  material"  means a discard  generated by a business or
          residence that has fulfilled its useful life.  Post-consumer  material
          does not include discards from industrial or manufacturing processes.

     12.  "Purchase  description"  means the  words  used in a  solicitation  to
          describe  the  materials,  services or  construction  for purchase and
          includes   specifications   attached  to,  or  made  a  part  of,  the
          solicitation.

     13.  "Recycled  paper" means paper  products  which have been  manufactured
          from  materials  otherwise  destined  for the waste  stream  and which
          contain at least forty per cent recovered wastepaper with ten per cent
          of that being post-consumer material.

     14.  "Request for  information"  means all documents  issued to vendors for
          the sole purpose of seeking  information about the availability in the
          commercial marketplace of materials or services.
                                                                         Page 23
<PAGE>
     15.  "Request  for  proposals"  means all  documents,  whether  attached or
          incorporated by reference,  which are used for soliciting proposals in
          accordance with procedures prescribed in section 41-2534.

     16.  "Responsible  bidder or offeror" means a person who has the capability
          to perform the contract requirements and the integrity and reliability
          which will assure  good faith  performance.  IN THE CASE OF  ESSENTIAL
          GOODS AND SERVICES,  RESPONSIBLE BIDDER OR OFFEROR SHALL, IN ADDITION,
          MEAN A PERSON  WHOSE  OFFER  MEETS  MINIMAL  SPECIFIED  STANDARDS  FOR
          QUALITY OF THE GOOD OR SERVICE,  WHO DEMONSTRATES  PROVEN  RELIABILITY
          FOR DELIVERY, WHO OFFERS APPROPRIATE WARRANTIES, GUARANTIES AND RETURN
          POLICIES,  AS APPLICABLE,  WHO POSSESSES RELEVANT INDUSTRY AND PROGRAM
          EXPERIENCE.  IN THE CASE OF ELECTRIC CONTRACTS,  RESPONSIBLE BIDDER OR
          OFFEROR MEANS AN ENTERPRISE WHICH CAN DEMONSTRATE THAT IT POSSESSES OR
          CONTROLS THE REQUIRED  RESOURCES  TO PERFORM ITS  OBLIGATIONS  FOR THE
          TERM OF THE COMMITMENT.

     17.  "Responsive  bidder or offeror" means a person who submits a bid which
          conforms  in all  material  respects  to the  invitation  for  bids or
          request for proposals.

     18.  "Unsolicited  proposal" means a written  proposal that is submitted on
          the initiative of the offeror for the purposes of obtaining a contract
          with this state and which is not in  response  to a formal or informal
          request from this state.

     19.  "Wastepaper"  means  recyclable  paper and paperboard,  including high
          grade office paper,  computer paper,  fine paper,  bond paper,  offset
          paper, xerographic paper, duplicator paper and corrugated paper.

     Section ___. Section 41-2534, Arizona Revised Statutes is amended to read:

     41-2534 Competitive sealed proposals

     A.   If,  under  regulations  promulgated  pursuant  to this  chapter,  the
          director  determines  in writing  that the use of  competitive  sealed
          bidding is either not practicable or not advantageous to this state, a
          contract  may be entered into by  competitive  sealed  proposals.  The
          director may provide by regulation  that it is either not  practicable
          or not  advantageous  to this  state  to  procure  specified  types of
          materials or services by competitive  sealed bidding,  except that the
          competitive  sealed proposal  method may not be used for  construction
          contracts.  COMPETITIVE SEALED PROPOSALS SHALL NOT BE REQUIRED FOR THE
          PURCHASE OF ESSENTIAL GOODS AND SERVICES.

     B.   Proposals shall be solicited through a request for proposals.

     C.   Adequate  public notice of the request for proposals shall be given in
          the same manner as provided in section 41-2533.

     D.   Proposals shall be opened publicly at the time and place designated in
          the   request   for   proposals.   The  name  of  each   offeror   and
          NONCONFIDENTIAL  relevant  information  as is specified by  regulation
          shall be publicly  read and recorded in  accordance  with  regulations
          promulgated by the director.  All other  information  contained in the
          proposals shall be confidential so as to avoid  disclosure of contents
          prejudicial  to competing  offerors  during the process of negotiation
          AND 
                                                                          Page24
<PAGE>
          SO AS TO PREVENT  DISCLOSURE  OF TRADE  SECRETS  OR OTHER  PROPRIETARY
          INFORMATION.  The proposals shall be open for public  inspection after
          contract  award.  Except to the extent the bidder  designates  and the
          state concurs,  trade secrets or other  proprietary  data contained in
          the  bid  documents  shall  remain  confidential  in  accordance  with
          regulations  promulgated  by the director.  ANY PERSON WHO  IMPROPERLY
          DISCLOSES  CONFIDENTIAL  INFORMATION  PROVIDED BY  COMPETING  OFFERORS
          SHALL BE SUBJECT TO A CIVIL  FINE OF UP TO $10,000  FOR EACH  IMPROPER
          DISCLOSURE.

     E.   The request for proposals shall state the relative importance of price
          and other  evaluation  factors.  Specific  numerical  weighting is not
          required.

     F.   As  provided  in the  request  for  proposals,  and under  regulations
          promulgated  by  the  director,  discussions  may  be  conducted  with
          responsible  offerors who submit proposals determined to be reasonably
          susceptible   to  being   selected   for  award  for  the  purpose  of
          clarification to assure full  understanding of, and responsiveness to,
          the  solicitation  requirements.   Offerors  shall  be  accorded  fair
          treatment with respect to any  opportunity for discussion and revision
          of proposals,  and such revisions may be permitted  after  submissions
          and before award for the purpose of obtaining  best and final  offers.
          In  conducting  discussions,  there  shall  be no  disclosure  of  any
          information derived from proposals submitted by competing offerors.

     G.   The award shall be made to the  responsible  offeror whose proposal is
          determined in writing to be the most advantageous to this state taking
          into consideration the evaluation factors set forth in the request for
          proposals,  WHICH MAY INCLUDE PRICE OR OTHER  VALUE-RELATED  TERMS AND
          CONDITIONS WHICH, IN THE DIRECTOR'S  DISCRETION,  PROVIDE AN ADVANTAGE
          TO THE  STATE.  No  other  factors  or  criteria  may be  used  in the
          evaluation.  The amount of any applicable transaction privilege or use
          tax of a  political  subdivision  of this  state  is not a  factor  in
          determining  the most  advantageous  proposal if a  competing  offeror
          located  outside this state is not subject to a transaction  privilege
          or use tax of a political subdivision of this state. The contract file
          shall contain the basis on which the award is made.

     Section ___. Section 41-2537, Arizona Revised Statutes is amended to read:

     41-2537 Emergency procurements

     Notwithstanding any other provision of this chapter,  the director may make
          or authorize  others to make emergency  procurements if there exists a
          threat to public health,  welfare,  or safety or if a situation exists
          which makes compliance with section 41-2533 or 41-2534  impracticable,
          unnecessary  or  contrary  to  the  public   interest  as  defined  in
          regulations  promulgated  by the director,  except that such emergency
          procurements  shall be made with such  competition  as is  practicable
          under the  circumstances.  AN  IMMINENT  LOSS OR  SHORTAGE OF ELECTRIC
          POWER SHALL CONSTITUTE AN EMERGENCY  PERMITTING  PURCHASES  OUTSIDE OF
          THE REQUEST FOR PROPOSALS  PROCESS.  PREFERENCE  SHALL BE GIVEN TO THE
          CURRENT  ELECTRIC  POWER  SUPPLIER TO PROVIDE SUCH  ELECTRIC  POWER AS
          SHALL  BE  
                                                                         Page 25
<PAGE>
          NECESSARY TO SATISFY THE EMERGENCY  NEED. A written  determination  of
          the basis for the emergency  and for the  selection of the  particular
          contractor shall be included in the contract file.

     Section ___. Section 41-2541, Arizona Revised Statutes is amended to read:

     41-2541 Prequalification of contractors

     Prospective  contractors  may  be  prequalified  for  particular  types  of
          materials,  services  and  construction.  Prospective  contractors  of
          essential goods and services shall be  prequalified  and must be so in
          order to participate  in requests for proposals for electric  service.
          In the case of electric service,  prequalification shall include, at a
          minimum,  a demonstration of the  contractor's  resources that support
          its   commitment   to   serve   electricity,   including   plant   and
          transmission/distribution  rights and proof that it holds all licenses
          and  authorizations  to  serve  the  state  or the  agency  concerned.
          Prospective contractors have a continuing duty to provide the director
          with  information  on any  material  change  affecting  the  basis  of
          prequalification.  Solicitation mailing lists of potential contractors
          shall include the  prequalified  contractors.  Only those  prospective
          contractors of essential goods and services who are prequalified  will
          be included on the  solicitation  mailing list for essential goods and
          services.

     Section ___. Section 41-2546, Arizona Revised Statutes is amended to read:

     41-2546 Multi-term contracts

     A.   Unless otherwise provided by law, a contract for materials or services
          may be entered  into for a period of time up to five years,  as deemed
          to be in the best interest of this state,  if the term of the contract
          and  conditions of renewal or  extension,  if any, are included in the
          solicitation  and monies are  available for the first fiscal period at
          the time of  contracting.  A contract may be entered into for a period
          of  time  exceeding  five  years  if,  under  regulations  promulgated
          pursuant to this chapter, the director determines in writing that such
          a  contract  would  be  advantageous  to this  state.  IN THE  CASE OF
          ESSENTIAL GOODS AND SERVICES, IT IS PRESUMPTIVELY  ADVANTAGEOUS TO THE
          STATE TO ENTER INTO  CONTRACTS  EXCEEDING  FIVE YEARS IN ORDER TO TAKE
          ADVANTAGE OF ECONOMIES  OFFERED UNDER SUCH LONG-TERM  CONTRACTS AND TO
          ENSURE  UNINTERRUPTED  AVAILABILITY  OF ESSENTIAL  GOODS AND SERVICES.
          Payment and performance  obligations for succeeding fiscal periods are
          subject to the  availability and  appropriation  of monies,  EXCEPT AS
          OTHERWISE AGREED IN CONTRACTS FOR ESSENTIAL GOODS AND SERVICES.

     B.   Before the use of a multi-term  contract,  it shall be  determined  in
          writing  that:  1.  Estimated  requirements  cover  the  period of the
          contract and are  reasonable and  continuing.  2. Such a contract will
          serve  the  best  interests  of this  state by  encouraging  effective
          competition or otherwise promoting economies in state procurement.

     C.   If monies are not  appropriated or otherwise made available to support
          continuation  of  performance  in  a  subsequent  fiscal  period,  the
          contract  shall be canceled and the  contractor may only be reimbursed
          for the reasonable  value of any  nonrecurring  
                                                                         Page 26
<PAGE>
          costs  incurred  but not  amortized  in the price of the  materials or
          services  delivered  under the  contract  or which are  otherwise  not
          recoverable.   The  cost  of   cancellation   may  be  paid  from  any
          appropriations available for such purposes.

Reference: Senate Commerce and Economic Development Committee Amendment

Page 15

     Strike lines 27 through 28

     Line 15 strike "JUNE 30", replace with "DECEMBER 31"

Page 16

     Strike lines 5 and 6

Page 17

     Line 27 strike "JUNE 30", replace with "DECEMBER 31"

     Strike line 29

     Strike line 33
                                                                         Page 27
<PAGE>
                                  Exhibit Four

Stranded costs would be measured during  concurrent  applicable  periods,  in no
event  ending  later  than  December  31,  2006,  for the  respective  utilities
("Transition   Period")  by  comparing  the  respective  utilities'  actual  and
reasonable  generation and  generation-related  costs including purchased power,
cost of capital,  and all mitigation costs during this period, and actual market
prices for the preceding year using a four-step process.

         STEP 1
         ------
         Market  prices will be  determined  by reference to the  California  PX
         market (or some comparable market index). If the California PX price is
         used it will be adjusted for transmission wheeling,  administrative and
         other  applicable  charges,  and  transmission  losses in an attempt to
         determine  the  hourly  market  price  at Palo  Verde.  The  respective
         utilities  will  apply  the  same  market  index  in  determining   any
         applicable stranded cost charges.

         STEP 2
         ------
         Actual  hourly  system loads will be multiplied by hourly market prices
         from Step 1 to determine hourly revenues which could have been produced
         if the  utilities  were to sell their power  supply in the  competitive
         market.  Summation of these hourly  dollar  values will produce  annual
         revenues.

         STEP 3
         ------
         The utilities will determine their actual and reasonable generation and
         generation-related costs including purchased power, cost of capital and
         all mitigation costs, from relevant financial and accounting data.

         STEP 4
         ------
         If the amount of the  utilities'  costs  (Step 3) is  greater  than the
         utilities'  calculated  retail market revenues (Step 2), the difference
         will then be allocated  among the respective  utilities'  rate classes,
         using traditional cost allocation and rate design principles,  and will
         be charged to all customers on a demand and/or energy basis,  depending
         upon the customer's  class.  Such recovery will occur over a concurrent
         period  for the  respective  utilities,  in no event to end later  than
         2006.

For  purposes of this  calculation,  "stranded  costs" will  include  only those
prudent, verifiable and unmitigated costs as defined by each party.

SRP will  propose and support  before its Board of Directors  the stranded  cost
methodology as set forth in this Exhibit.
                                                                         Page 28
<PAGE>
APS will  propose and  support  before the Arizona  Corporation  Commission  the
stranded cost methodology as set forth in this Exhibit, except that APS will not
count regulatory assets recovered under existing ACC orders.
                                                                         Page 29

<TABLE> <S> <C>


<ARTICLE>                     UT
<MULTIPLIER>                  1,000
<CURRENCY>                    U.S. Dollars
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                                                    DEC-31-1998
<PERIOD-START>                                                       JAN-01-1998
<PERIOD-END>                                                         MAR-31-1998
<EXCHANGE-RATE>                                                                1
<BOOK-VALUE>                                                            PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                                              4,668,691
<OTHER-PROPERTY-AND-INVEST>                                              167,243
<TOTAL-CURRENT-ASSETS>                                                   301,806
<TOTAL-DEFERRED-CHARGES>                                               1,103,377
<OTHER-ASSETS>                                                                 0
<TOTAL-ASSETS>                                                         6,241,117
<COMMON>                                                                 178,162
<CAPITAL-SURPLUS-PAID-IN>                                              1,142,499
<RETAINED-EARNINGS>                                                      472,853
<TOTAL-COMMON-STOCKHOLDERS-EQ>                                         1,793,514
                                                     19,110
                                                              141,317
<LONG-TERM-DEBT-NET>                                                   2,019,248
<SHORT-TERM-NOTES>                                                             0
<LONG-TERM-NOTES-PAYABLE>                                                      0
<COMMERCIAL-PAPER-OBLIGATIONS>                                            81,000
<LONG-TERM-DEBT-CURRENT-PORT>                                              4,068
                                                      0
<CAPITAL-LEASE-OBLIGATIONS>                                                    0
<LEASES-CURRENT>                                                               0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                                         2,182,860
<TOT-CAPITALIZATION-AND-LIAB>                                          6,241,117
<GROSS-OPERATING-REVENUE>                                                380,423
<INCOME-TAX-EXPENSE>                                                      24,464
<OTHER-OPERATING-EXPENSES>                                               292,418
<TOTAL-OPERATING-EXPENSES>                                               316,882
<OPERATING-INCOME-LOSS>                                                   63,541
<OTHER-INCOME-NET>                                                         2,059
<INCOME-BEFORE-INTEREST-EXPEN>                                            65,600
<TOTAL-INTEREST-EXPENSE>                                                  33,665
<NET-INCOME>                                                              31,935
                                                2,878
<EARNINGS-AVAILABLE-FOR-COMM>                                             29,057
<COMMON-STOCK-DIVIDENDS>                                                  85,000
<TOTAL-INTEREST-ON-BONDS>                                                 30,028
<CASH-FLOW-OPERATIONS>                                                   205,088
<EPS-PRIMARY>                                                                  0
<EPS-DILUTED>                                                                  0
        

</TABLE>


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