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      June 30, 1998
                               -----------------------
                                       OR

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

For the transition period from                      to

Commission 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 August 14, 1998: 71,264,947

                                    GLOSSARY

ACC - Arizona Corporation Commission

ACC Staff - Staff of the Arizona Corporation Commission

Company - Arizona Public Service Company

DOE - United States Department of Energy

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

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

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

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

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

SFAS No. 133 - Statement of Financial  Accounting Standards No. 133, "Accounting
for Derivative Instruments and Hedging Activities"

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

                                       -2-

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

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

                         ARIZONA PUBLIC SERVICE COMPANY
                         CONDENSED STATEMENTS OF INCOME
                         ------------------------------
                                   (Unaudited)

                                                              Three Months
                                                             Ended June 30,
                                                         ----------------------
                                                            1998         1997
                                                         ---------    ---------
                                                         (Thousands of Dollars)

ELECTRIC OPERATING REVENUES ..........................   $ 441,715    $ 458,751
                                                         ---------    ---------

FUEL EXPENSES:
  Fuel for electric generation .......................      50,434       55,626
  Purchased power ....................................      45,151       43,684
                                                         ---------    ---------
     Total ...........................................      95,585       99,310
                                                         ---------    ---------
OPERATING REVENUES LESS FUEL EXPENSES ................     346,130      359,441
                                                         ---------    ---------

OTHER OPERATING EXPENSES:
  Operations and maintenance excluding fuel expenses .     102,713       89,162
  Depreciation and amortization ......................      92,666       91,138
  Income taxes .......................................      39,933       49,579
  Other taxes ........................................      29,519       29,856
                                                         ---------    ---------
     Total ...........................................     264,831      259,735
                                                         ---------    ---------
OPERATING INCOME .....................................      81,299       99,706
                                                         ---------    ---------

OTHER INCOME (DEDUCTIONS):
  Other - net ........................................      (2,519)        (910)
  Income taxes .......................................       7,488        6,550
                                                         ---------    ---------
     Total ...........................................       4,969        5,640
                                                         ---------    ---------
INCOME BEFORE INTEREST DEDUCTIONS ....................      86,268      105,346
                                                         ---------    ---------

INTEREST DEDUCTIONS:
  Interest on long-term debt .........................      34,160       35,262
  Interest on short-term borrowings ..................       2,376        3,095
  Debt discount, premium and expense .................       1,918        2,056
  Capitalized interest ...............................      (4,370)      (4,560)
                                                         ---------    ---------
     Total ...........................................      34,084       35,853
                                                         ---------    ---------

NET INCOME ...........................................      52,184       69,493
PREFERRED STOCK DIVIDEND REQUIREMENTS ................       2,435        3,195
                                                         ---------    ---------
EARNINGS FOR COMMON STOCK ............................   $  49,749    $  66,298
                                                         =========    =========

See Notes to Condensed Financial Statements.

                                       -3-

                         ARIZONA PUBLIC SERVICE COMPANY
                         CONDENSED STATEMENTS OF INCOME
                         ------------------------------
                                   (Unaudited)

                                                               Six Months
                                                             Ended June 30,
                                                         ----------------------
                                                            1998         1997
                                                         ---------    ---------
                                                         (Thousands of Dollars)

ELECTRIC OPERATING REVENUES ..........................   $ 822,138    $ 837,772
                                                         ---------    ---------

FUEL EXPENSES:
  Fuel for electric generation .......................     100,762      106,748
  Purchased power ....................................      68,740       78,031
                                                         ---------    ---------
     Total ...........................................     169,502      184,779
                                                         ---------    ---------
OPERATING REVENUES LESS FUEL EXPENSES ................     652,636      652,993
                                                         ---------    ---------

OTHER OPERATING EXPENSES:
  Operations and maintenance excluding fuel expenses .     199,129      177,178
  Depreciation and amortization ......................     184,813      183,153
  Income taxes .......................................      64,397       71,871
  Other taxes ........................................      59,457       59,646
                                                         ---------    ---------
     Total ...........................................     507,796      491,848
                                                         ---------    ---------
OPERATING INCOME .....................................     144,840      161,145
                                                         ---------    ---------

OTHER INCOME (DEDUCTIONS):
  Other - net ........................................      (4,915)      (3,119)
  Income taxes .......................................      11,943       10,890
                                                         ---------    ---------
     Total ...........................................       7,028        7,771
                                                         ---------    ---------
INCOME BEFORE INTEREST DEDUCTIONS ....................     151,868      168,916
                                                         ---------    ---------

INTEREST DEDUCTIONS:
  Interest on long-term debt .........................      69,343       69,691
  Interest on short-term borrowings ..................       3,060        5,423
  Debt discount, premium and expense .................       3,867        4,058
  Capitalized interest ...............................      (8,521)      (8,394)
                                                         ---------    ---------
     Total ...........................................      67,749       70,778
                                                         ---------    ---------

NET INCOME ...........................................      84,119       98,138
PREFERRED STOCK DIVIDEND REQUIREMENTS ................       5,313        6,821
                                                         ---------    ---------
EARNINGS FOR COMMON STOCK ............................   $  78,806    $  91,317
                                                         =========    =========

See Notes to Condensed Financial Statements

                                       -4-

                         ARIZONA PUBLIC SERVICE COMPANY
                         CONDENSED STATEMENTS OF INCOME
                         ------------------------------
                                   (Unaudited)

                                                          Twelve Months
                                                          Ended June 30,
                                                    --------------------------
                                                        1998          1997
                                                    -----------    -----------
                                                      (Thousands of Dollars)

ELECTRIC OPERATING REVENUES .....................   $ 1,862,919    $ 1,784,125
                                                    -----------    -----------

FUEL EXPENSES:
  Fuel for electric generation ..................       195,355        237,518
  Purchased power ...............................       225,995        136,757
                                                    -----------    -----------
     Total ......................................       421,350        374,275
                                                    -----------    -----------
OPERATING REVENUES LESS FUEL EXPENSES ...........     1,441,569      1,409,850
                                                    -----------    -----------

OTHER OPERATING EXPENSES:
  Operations and maintenance excluding 
     fuel expenses...............................       421,385        419,853
  Depreciation and amortization .................       367,331        363,182
  Income taxes ..................................       177,263        169,361
  Other taxes ...................................       120,070        111,601
                                                    -----------    -----------
     Total ......................................     1,086,049      1,063,997
                                                    -----------    -----------
OPERATING INCOME ................................       355,520        345,853
                                                    -----------    -----------

OTHER INCOME (DEDUCTIONS):
  AFUDC - equity ................................          --            1,531
  Other - net ...................................       (11,623)       (15,621)
  Income taxes ..................................        32,466         41,253
                                                    -----------    -----------
     Total ......................................        20,843         27,163
                                                    -----------    -----------
INCOME BEFORE INTEREST DEDUCTIONS ...............       376,363        373,016
                                                    -----------    -----------

INTEREST DEDUCTIONS:
  Interest on long-term debt ....................       140,583        142,597
  Interest on short-term borrowings .............         7,041          9,245
  Debt discount, premium and expense ............         7,600          8,113
  Capitalized interest ..........................       (16,335)       (12,502)
                                                    -----------    -----------
     Total ......................................       138,889        147,453
                                                    -----------    -----------

NET INCOME ......................................       237,474        225,563
PREFERRED STOCK DIVIDEND REQUIREMENTS ...........        11,295         15,110
                                                    -----------    -----------
EARNINGS FOR COMMON STOCK .......................   $   226,179    $   210,453
                                                    ===========    ===========

See Notes to Condensed Financial Statements.

                                       -5-

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

                                     ASSETS
                                   (Unaudited)
                                                       June 30,     December 31,
                                                         1998           1997
                                                     -----------    -----------

                                                       (Thousands of Dollars)
UTILITY PLANT:
Electric plant in service and held for future use    $ 7,057,168    $ 7,009,059
Less accumulated depreciation and amortization ...     2,720,762      2,620,607
                                                     -----------    -----------
   Total .........................................     4,336,406      4,388,452
Construction work in progress ....................       294,978        237,492
Nuclear fuel, net of amortization ................        51,165         51,624
                                                     -----------    -----------
   Utility plant - net ...........................     4,682,549      4,677,568
                                                     -----------    -----------

INVESTMENTS AND OTHER ASSETS .....................       180,393        164,906
                                                     -----------    -----------

CURRENT ASSETS:
Cash and cash equivalents ........................        14,192         12,552
Accounts receivable:
   Service customers .............................       130,568        141,022
   Other .........................................        31,494         31,313
   Allowance for doubtful accounts ...............        (1,012)        (1,338)
Accrued utility revenues .........................        66,922         58,559
Materials and supplies, at average cost ..........        71,207         70,634
Fossil fuel, at average cost .....................        17,960          9,621
Deferred income taxes ............................         3,496          3,496
Other ............................................        29,824         24,529
                                                     -----------    -----------
   Total current assets ..........................       364,651        350,388
                                                     -----------    -----------

DEFERRED DEBITS:
Regulatory asset for income taxes ................       430,601        458,369
Rate synchronization cost deferral ...............       331,265        358,871
Unamortized costs of reacquired debt .............        59,088         63,501
Unamortized debt issue costs .....................        15,294         15,303
Other ............................................       231,163        242,236
                                                     -----------    -----------
   Total deferred debits .........................     1,067,411      1,138,280
                                                     -----------    -----------

   TOTAL .........................................   $ 6,295,004    $ 6,331,142
                                                     ===========    ===========

See Notes to Condensed Financial Statements.

                                       -6-

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

                                   LIABILITIES
                                   (Unaudited)

                                                      June 30,     December 31,
                                                        1998           1997
                                                    ------------   ------------
                         
                                                         (Thousands of Dollars)
CAPITALIZATION:
Common stock ....................................   $    178,162   $    178,162
Additional paid-in capital ......................      1,143,586      1,142,364
Retained earnings ...............................        479,690        528,798
                                                    ------------   ------------
   Common stock equity ..........................      1,801,438      1,849,324
Non-redeemable preferred stock ..................        124,034        142,051
Redeemable preferred stock ......................         15,377         29,110
Long-term debt less current maturities ..........      1,861,783      1,953,162
                                                    ------------   ------------
   Total capitalization .........................      3,802,632      3,973,647
                                                    ------------   ------------

CURRENT LIABILITIES:
Commercial paper ................................        213,485        130,750
Current maturities of long-term debt ............        154,220        104,068
Accounts payable ................................         98,480        107,423
Accrued taxes ...................................         78,451         85,886
Accrued interest ................................         31,743         31,660
Common dividends payable ........................         42,500           --
Customer deposits ...............................         29,298         29,116
Other ...........................................         23,657         19,588
                                                    ------------   ------------
   Total current liabilities ....................        671,834        508,491
                                                    ------------   ------------

DEFERRED CREDITS AND OTHER:
Deferred income taxes ...........................      1,324,121      1,345,177
Deferred investment tax credit ..................         50,142         60,093
Unamortized gain - sale of utility plant ........         80,075         82,363
Customer advances for construction ..............         29,920         29,294
Other ...........................................        336,280        332,077
                                                    ------------   ------------
   Total deferred credits and other .............      1,820,538      1,849,004
                                                    ------------   ------------

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

   TOTAL ........................................   $  6,295,004   $  6,331,142
                                                    ============   ============

See Notes to Condensed Financial Statements.

                                       -7-

                         ARIZONA PUBLIC SERVICE COMPANY
                       CONDENSED STATEMENTS OF CASH FLOWS
                       ----------------------------------
                                   (Unaudited)
                                                                Six Months
                                                              Ended June 30,
                                                         ----------------------
                                                            1998         1997
                                                         ---------    ---------
                                                         (Thousands of Dollars)
Cash Flows from Operating Activities:
  Net income .........................................   $  84,119    $  98,138
  Items not requiring cash:
    Depreciation and amortization ....................     184,813      183,153
    Nuclear fuel amortization ........................      16,580       16,186
    Deferred income taxes - net ......................     (18,428)     (25,107)
    Deferred investment tax credit - net .............      (9,951)      (9,926)
  Changes in certain current assets and liabilities:
    Accounts receivable - net ........................       9,947       (6,092)
    Accrued utility revenues .........................      (8,363)     (14,047)
    Materials, supplies and fossil fuel ..............      (8,912)       1,153
    Other current assets .............................      (5,295)      (6,964)
    Accounts payable .................................     (10,279)     (37,099)
    Accrued taxes ....................................      (7,435)       8,163
    Accrued interest .................................          83       (6,898)
    Other current liabilities ........................       2,922        2,826
  Other - net ........................................      10,267       34,120
                                                         ---------    ---------
Net cash flow provided by operating activities .......     240,068      237,606
                                                         ---------    ---------
Cash Flows from Investing Activities:
  Capital expenditures ...............................    (144,580)    (145,203)
  Capitalized interest ...............................      (8,521)      (8,394)
  Other ..............................................      (3,347)     (12,577)
                                                         ---------    ---------
      Net cash flow used for investing activities ....    (156,448)    (166,174)
                                                         ---------    ---------

Cash Flows from Financing Activities:
  Long-term debt .....................................      99,375       99,875
  Short-term borrowings - net ........................      82,735      181,100
  Dividends paid on common stock .....................     (85,000)     (85,000)
  Dividends paid on preferred stock ..................      (5,631)      (7,345)
  Repayment of preferred stock .......................     (31,209)     (46,044)
  Repayment and reacquisition of long-term debt ......    (142,250)    (219,192)
                                                         ---------    ---------
      Net cash flow used for financing activities ....     (81,980)     (76,606)
                                                         ---------    ---------

Net increase (decrease) in cash and cash equivalents .       1,640       (5,174)
Cash and cash equivalents at beginning of period .....      12,552       12,521
                                                         ---------    ---------
Cash and cash equivalents at end of period ...........   $  14,192    $   7,347
                                                         =========    =========

Supplemental Disclosure of Cash Flow Information:
  Cash paid during the period for:
    Interest (excluding capitalized interest) ........   $  63,960    $  74,291
    Income taxes .....................................   $  86,397    $  84,432

See Notes to Condensed Financial Statements.

                                      -8-

                         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 June 30,
1998,  the results of  operations  for the three  months,  six months and twelve
months ended June 30, 1998 and 1997, and the cash flows for the six months ended
June  30,  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.  Certain  prior year  balances  have been  restated to conform to the
current year presentation.

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 six months ended June 30, 1998.

5. Regulatory Matters -- Electric Industry Restructuring

State

ACC Rules.  In December 1996, the ACC adopted rules that provide a framework for
the introduction of retail electric  competition in Arizona.  On August 5, 1998,
the ACC adopted amendments to the rules. The ACC rules, as amended,  include the
following major provisions:

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

     +    The rules require each  affected  utility,  including the Company,  to
          make  available at least 20% of its 1995 system retail peak demand for
          competitive  generation  supply  to  all  customer  classes  beginning
          January 1, 1999, and 100% beginning January 1, 2001.

     +    All  affected  utility  customers  with  single  premise  loads of one
          megawatt or greater will be eligible for competitive electric services
          beginning  January  1,  1999,  until  the 20% level  described  in the
          preceding  paragraph  is met.  Until  the

                                      -9-

          20% level is met, affected utility customers with single premise loads
          of  forty  kilowatts  or  greater  will be able  to  aggregate  into a
          combined   load  of  one  megawatt  or  greater  to  be  eligible  for
          competitive electric services beginning January 1, 1999.

     +    Prior to January 1, 2001,  residential  customers  will have access to
          competitive  services through a quarterly phase-in of one-half percent
          of residential customers per quarter beginning January 1, 1999.

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

     +    As required by the rules,  in February 1998 the Company filed with the
          ACC proposed tariffs for unbundled  service (electric service elements
          provided and priced separately).  The ACC has not issued a decision in
          this matter.

     +    The rules establish that the ACC shall allow a reasonable  opportunity
          for the recovery of unmitigated  stranded costs.  See "Stranded Costs"
          below.   Affected   utilities   are   expected  to  take   reasonable,
          cost-effective steps to mitigate stranded costs.

     +    Absent a waiver from the ACC,  each  affected  utility  must  separate
          itself from all  competitive  generation  assets and services prior to
          January  1, 2001.  The  separation  must be either to an  unaffiliated
          party or to a separate corporate affiliate or affiliates.

     +    Beginning  January 1, 1999,  each affected  utility will be prohibited
          from providing certain competitive electric services, except through a
          separate affiliate.

     +    The rules contain affiliate transaction rules generally prohibiting an
          affected utility and its competitive  electric affiliates from sharing
          personnel,  office space, equipment,  services, and systems, except to
          the extent appropriate to perform certain permissible shared corporate
          support  functions.  No later than  December 31, 1998,  each  affected
          utility must file a  compliance  plan with the ACC  demonstrating  its
          compliance with the affiliate transaction rules.

     +    By  September  15,  1998,  each  affected  utility  must file a report
          detailing  possible  mechanisms  to  provide  benefits,  such  as rate
          reductions of 3% to 5%, to all standard offer customers and a proposed
          plan for residential phase-in implementation.

The amended  rules,  a copy of which has been filed as an exhibit to this Report
on Form 10-Q,  became effective on an emergency basis upon their filing with the
Secretary of State on August 10, 1998;  however,  the ACC must complete a public
process to adopt

                                      -10-

the rules on a permanent  basis  within 180 days.  The Company  anticipates  the
completion of this process by year-end 1998 or early 1999.

The Company believes that certain provisions of the ACC 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.

Stranded Costs. In February 1998, the ACC completed a formal, generic hearing on
stranded cost  determination  and recovery.  On June 22, 1998, the ACC issued an
order in this matter. The order allows an affected utility, such as the Company,
to choose between two options for the recovery of its stranded costs.  Under the
first option,  an affected utility that chooses to divest its generating  assets
to an unaffiliated  party must file a divestiture plan for ACC approval no later
than October 1, 1998, and such divestiture must be completed by January 1, 2001,
after which the  affected  utility  would be permitted to collect 100 percent of
its  stranded  costs,  including  a return on the  unamortized  balance,  over a
ten-year  period.  Under  the  second  option  (referred  to by  the  ACC as the
"Transition  Revenues  Methodology"),  an  affected  utility  would be  provided
sufficient  revenues necessary to maintain  financial  integrity for a period of
ten years or the ACC would  "otherwise  provide an  allocation  of stranded cost
responsibilities  and risks between ratepayers and shareholders as is determined
to be in the public  interest." The order also states an intent that the various
recovery  options "will provide the affected  utilities  sufficient  revenues to
enable them to recover  appropriate  regulatory assets." The order requires each
affected  utility to file with the ACC, on or before August 21, 1998, its choice
of options for stranded cost recovery as well as an implementation plan relating
to its chosen option,  including its estimated stranded costs separated out into
regulatory assets and other generation related assets.  Stranded costs estimates
vary depending on various assumptions,  estimates, methodologies and measurement
periods. Based on various assumptions,  estimates and methodologies, the Company
has  previously   estimated  that  its  recoverable  stranded  costs  (excluding
regulatory  assets  which have already  been  addressed  in the 1996  regulatory
agreement with the ACC) would be less than $500 million,  assuming a measurement
period 2001 through 2006.

The Company  intends to use the  Transition  Revenues  Methodology  and does not
intend to divest its generating  assets to an  unaffiliated  party.  The Company
cannot accurately predict the outcome of this matter.

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 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) has been
subsequently  decided  in  favor  of the ACC in one  

                                      -11-

unrelated and two related lawsuits.

In May 1998, a bill was enacted to facilitate  implementation of retail electric
competition in the state. 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  that 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.  In addition, the Arizona legislature
will  review  and make  recommendations  for the  1999  legislature  on  certain
competitive issues.

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, 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 June 30,  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.

                                      -12-

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

Changes  in  ACC  decisions,  Arizona  and  federal  legislation,  and  possible
amendments to the Arizona  Constitution may impact the  implementation of retail
electric  competition  in  Arizona.  Until  the  details  of  implementation  of
competition,  including  addressing  stranded costs, are 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.

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:

     +    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.

     +    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).

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

                                      -13-

     +    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.

     +    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:

     +    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.

     +    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.

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

An ACC  docket had  previously  been  established  and the ACC held a hearing on
August 6, 1998 so that the ACC could review certain provisions of the Memorandum
of Agreement,  as amended,  including,  whether:  (a) the Territorial  Agreement
remains in the public interest,  (b) the Agreement is a contract in restraint of
trade,  and (c) the Agreement  will  materially  lessen the potential for retail
electric competition in Arizona.

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,  requested  clarification of the
operation of certain of the Agreement's  provisions.  Pursuant to an Addendum to
Memorandum of Agreement, dated as of May 19, 1998 (the "Addendum"),  the Company
and  Salt  River  Project  amended  and  clarified  certain  provisions  of  the
Memorandum  of Agreement in response to certain  issues  raised by the Antitrust
Unit. By letter dated May 19, 1998,  the Antitrust  Unit advised the Company and
Salt River Project that, upon their execution of the Addendum,  it would take no
action  regarding  the  language of the

                                      -14-

Memorandum  of  Agreement,  although it reserved the right to take action in the
future if new information justified doing so.

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  $88  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  $77
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  estimates that its share of the  replacement
costs (in 1998 dollars) 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. The Financial Accounting Standards Board issued SFAS No. 131 on "Disclosures
about Segments of an Enterprise and Related  Information" which is 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

                                      -15-

major customers.  The Company is currently  evaluating what impact this standard
will have on its disclosures.

In June 1998 the  Financial  Accounting  Standards  Board  issued  SFAS No.  133
"Accounting  for  Derivative  Instruments  and  Hedging  Activities,"  which  is
effective  for the  Company  in  2000.  SFAS No.  133  requires  that an  entity
recognize all  derivatives  as either assets or liabilities in the balance sheet
and measure those instruments at fair value. The standard also provides specific
guidance for accounting for derivatives  designated as hedging instruments.  The
Company is  currently  evaluating  what  impact this  standard  will have on its
financial statements.


                                      -16-

                         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,  six-month  and  twelve-month  periods ended June 30, 1998 and
1997:
                              Periods ended June 30
                                   (Unaudited)
                             (Thousands of Dollars)


                       Three Months            Six Months             Twelve Months
                    -------------------    ------------------    -----------------------
                      1998       1997        1998      1997         1998         1997
                                                                   
Operating Revenues  $441,715   $458,751    $822,138  $837,772    $1,862,919   $1,784,125

Earnings for
Common Stock        $ 49,749   $ 66,298    $ 78,806  $ 91,317    $  226,179   $  210,453


         Operating  Results -  Three-month  period ended June 30, 1998 compared
         with three-month period ended June 30, 1997

         Earnings decreased $17 million in the three-month  comparison primarily
because  of  the  effects  of  weather,  increased  operations  and  maintenance
expenses, and a retail price reduction,  partially offset by customer growth and
lower fuel expenses.  See Note 6 of Notes to Condensed Financial  Statements for
information on the price reduction.

         Operating  revenues  decreased $17 million  because of weather  effects
($41  million) and the price  reduction ($4  million),  partially  offset by the
effects  of  customer  growth  ($17  million),  increased  sales for  resale ($8
million)  and other ($3  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  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.

         Operations and maintenance  expenses  increased $14 million as a result
of the  timing of  scheduled  outages at power  plants  and other  miscellaneous
expenses.

         Fuel  expenses  decreased  $4 million  primarily  because of lower fuel
prices and lower retail sales, partially offset by higher sales for resale.

                                      -17-

         Operating Results - Six-month period ended June 30, 1998 compared with
         six-month period ended June 30, 1997

         Earnings  decreased $13 million in the six-month  comparison  primarily
because  of  the  effects  of  weather,  increased  operations  and  maintenance
expenses, and a retail price reduction,  partially offset by customer growth and
lower fuel expenses.  See Note 6 of Notes to Condensed Financial  Statements for
additional information about the price reduction.

         Operating  revenues  decreased $16 million  because of weather  effects
($38  million) and the price  reduction ($8  million),  partially  offset by the
effects of customer  growth ($29 million).  Operations and  maintenance expenses
increased  $22  million  as a result of growth  and  increased  expenses  due to
impending competition, the timing of scheduled outages at power plants and other
miscellaneous factors.

         Fuel expenses  decreased $15 million  primarily because of lower prices
and a more favorable mix.

          Operating  Results - Twelve-month  period ended June 30, 1998 compared
          with twelve-month period ended June 30, 1997

         Earnings increased $16 million in the twelve-month comparison primarily
because of customer growth; two fuel-related settlements in the third quarter of
1997; and lower fuel prices. These positive factors more than offset the effects
of  weather  and a retail  price  reduction.  See  Note 6 of Notes to  Condensed
Financial  Statements for additional  information about the price reduction.  In
the period ended June 30, 1997, the Company also recognized $8 million of income
tax benefits associated with capital loss carryforwards.

         Operating revenues increased $79 million primarily because of increases
in sales for resale ($80 million) and customer  growth ($57 million),  partially
offset by the effects of weather  ($37  million)  and the price  reduction  ($18
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 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.

         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 increased $2 million because higher
expenses  related to growth and impending  competition,  the timing of scheduled

                                      -18-

outages at power  plants and other  miscellaneous  factors  more than offset the
effects of a charge  for a  voluntary  severance  program  recorded  in 1996 and
related savings in 1997.

         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.

Liquidity and Capital Resources

         For  the  six  months  ended  June  30,  1998,  the  Company   incurred
approximately $145 million in capital  expenditures,  which is approximately 45%
of  the  most  recently  estimated  1998  capital  expenditures.  The  Company's
projected capital expenditures for the next three years are: 1998, $323 million;
1999, $322 million; and 2000, $317 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,  $176 million;  1999,  $174 million;  and 2000,  $109 million.
During the six months ended June 30, 1998,  the Company  redeemed  approximately
$142  million  of its  long-term  debt  and  approximately  $31  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.

         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 Issue

         As the year 2000 approaches  many companies face problems  because many
software  application  and  operational  programs  will not  properly  recognize
calendar  dates   beginning  with  the  year  2000.  The  Company   initiated  a
comprehensive  

                                      -19-

Company-wide  Year 2000  program  over a year ago to review and resolve all Year
2000 issues in critical systems and equipment in a timely manner in an effort to
ensure the  reliability of electric  service to its  customers.  This included a
Company-wide awareness program of the Year 2000 issue.

         The Company believes that  substantially  all of its major  information
technology (IT) systems are Year 2000 compliant.  The Company has made, and will
continue to make,  certain  modifications to its computer  hardware and software
systems  and  applications  in an effort to ensure  they are capable of handling
changing  business needs,  including  dates in the year 2000 and thereafter.  In
addition, other IT systems and non-IT systems, including embedded technology and
real-time   process   control   systems,   are  being   analyzed  for  potential
modifications.  To date, the Company has inventoried essentially all critical IT
and non-IT systems and the assessment of these systems is ongoing.  The analysis
of the IT and non-IT systems should be complete in late 1998 and any renovation,
validation,  and implementation to be made will be completed by mid-1999 for all
critical systems that affect operations, except for those items that can only be
completed  during  maintenance  outages at Palo Verde,  which will be  completed
during  the last half of 1999.  The  Company  has also  designated  an  internal
audit/quality  review team that is reviewing the  individual  Year 2000 projects
and their Year 2000 readiness on a quarterly  basis.  The cost to the Company of
Year 2000  remediation  has not had,  and is not  expected  to have,  a material
adverse effect on the Company's  financial  position,  cash flows, or results of
operations.

         The Company is in the  process of  communicating  with its  significant
suppliers,  business partners, other utilities, 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.  The Company has been
interfacing  with  suppliers  for systems,  services,  and materials in order to
assess whether their  schedules for analysis and remediation of Year 2000 issues
are timely  and to assess  their  ability to  continue  to supply  services  and
materials required by the Company. However, the Company cannot currently predict
the effect on the Company if the systems of these other  companies  are not Year
2000 compliant.

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  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.

                                      -20-

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;  technological developments in the electric
industry; and Year 2000 issues.

         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.

                                      -21-

                           PART II - OTHER INFORMATION

ITEM 4. Submission Of Matters to a Vote of Security Holders

        At the  Annual  Meeting  of  Shareholders  held  on May  19,  1998,  the
shareholders  elected all of the  directors  of the  Company,  each of whom will
serve  for  the  ensuing  year or  until  his or her  successor  is  elected  or
qualified, as follows:
                                         Votes Against                  Broker
    Director               Votes For      and Withheld   Abstentions   Non-votes
    --------               ---------      ------------   -----------   ---------

O. Mark De Michele        74,335,487        12,620          N/A          N/A
Michael L. Gallagher      74,334,952        13,120          N/A          N/A
Martha O. Hesse           74,335,702        12,420          N/A          N/A
Marianne M. Jennings      74,332,821        15,109          N/A          N/A
Robert E. Keever          74,334,952        13,120          N/A          N/A
Robert G. Matlock         74,335,702        12,420          N/A          N/A
Bruce J. Nordstrom        74,335,702        12,420          N/A          N/A
John R. Norton III        74,335,103        12,979          N/A          N/A
William J. Post           74,335,166        12,920          N/A          N/A
Donald M. Riley           74,334,952        13,120          N/A          N/A
George A. Schreiber, Jr.  74,335,166        12,920          N/A          N/A
Quentin P. Smith, Jr.     74,334,952        13,120          N/A          N/A
Richard Snell             74,333,387        14,580          N/A          N/A
Dianne C. Walker          74,334,952        13,120          N/A          N/A
Ben F. Williams, Jr.      74,335,434        12,670          N/A          N/A

ITEM 5. Other Information

        EPA Environmental Regulation

        As previously  reported,  the EPA has been  considering the Grand Canyon
Visability Transport  Commission's  recommendations  prior to promulgating final
regulations on a regional haze  regulatory  program and final  regulations  were
expected  by  June  1998.  See   "Environmental   Matters  -  EPA  Environmental
Regulation" in Part I, Item 1 of the 1997 10-K.  These final regulations are now
expected by December  1998. The Company  cannot  currently  estimate the capital
expenditures,  if any,  which may be required as a result of the EPA studies and
the Commission's recommendations.

        As previously reported, in July 1997, the EPA promulgated final National
Ambient  Air  Quality   Standards  for  ozone  and   particulate   matter.   See
"Environmental Matters - EPA Environmental  Regulation" in Part I, Item 1 of the
1997  10-K.   Congress  recently

                                      -22-

enacted  legislation  that could delay the  implementation  of the regional haze
requirements and particulate matter ambient standard.

        Spent Nuclear Fuel and Waste Disposal

         As previously  reported,  in November 1997,  the D.C.  Circuit issued a
Writ of Mandamus  precluding  DOE from  excusing  its delay in  accepting  spent
nuclear fuel by January 31, 1998.  See  "Generating  Fuel and Purchased  Power -
Nuclear Fuel Supply - Spent  Nuclear Fuel and Waste  Disposal" in Part I, Item 1
of the 1997 10-K. On May 5, 1998, the D.C.  Circuit issued a ruling  refusing to
order DOE to begin  moving spent  nuclear  fuel.  On July 24, 1998,  the Company
filed a Petition for Review with the D.C. Circuit  regarding DOE's obligation to
begin accepting spent nuclear fuel. Arizona Public Service Company v. Department
                                    --------------------------------------------
of Energy and United States of America, No. 98-1346 (D.C. Cir.).
- ---------------------------------------
         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              Retail Electric Competition Rules

27.1              Financial Data Schedule

                                      -23-

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


Exhibit No.  Description                     Originally Filed as Exhibit:  File No.a    Date Effective
- -----------  -----------                     ----------------------------  ---------    --------------
                                                                               
  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          means of September 24,
             Series A through V of the       1993 Form 8-K Report 
             Company's 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

 10.2        Arizona Corporation             99.1 to 1996 Form 10-K         1-4473          3-28-97
             Commission Order, Decision      Report
             No. 59943, dated December
             26, 1996, including the
             rules regarding the
             introduction of retail
             competition in Arizona


         (b)  Reports on Form 8-K

         During the  quarter  ended June 30,  1998,  and the period  from July 1
through August 14, 1998, the Company filed the following reports on Form 8-K:

         Report dated May 19, 1998  regarding  the stranded  cost hearing at the
ACC, ACC Staff's  Statement of Position  related to retail  competition  and the
Company's agreement with Salt River Project.

         Report dated August 5, 1998  regarding  the ACC rules related to retail
competition.


- ----------
a Reports filed under File No. 1-4473 were filed in the office of the Securities
and Exchange Commission located in Washington, D.C.

                                      -24-


                                   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: August 14, 1998                  By:  George A. Schreiber
                                           --------------------------------
                                           George A. Schreiber, Jr.
                                           Executive Vice President and
                                           Chief Financial Officer
                                           (Principal Financial Officer
                                           and Officer Duly Authorized to
                                           sign this Report)