SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 11-K

                        ANNUAL REPORT PURSUANT TO SECTION
                        15(d) OF THE SECURITIES EXCHANGE
                                   ACT OF 1934


(Mark One)
[X] ANNUAL REPORT  PURSUANT TO SECTION 15(d) OF THE  SECURITIES  EXCHANGE ACT OF
1934 [NO FEE REQUIRED, EFFECTIVE OCTOBER 7, 1996].
For the fiscal year ended December 31, 1997
                                       OR
[ ] TRANSITION  REPORT PURSUANT TO 15(d) OF THE SECURITIES  EXCHANGE ACT OF 1934
[NO FEE REQUIRED]. 
For the transition period from ___________ to ____________

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

                        The Savings Plan for Employees of
                         Arizona Public Service Company

                                       and

                     The Savings Plan for Union Employees of
                         Arizona Public Service Company
                           (Full titles of the plans)

                             400 North Fifth Street
                          Station 8478, P.O. Box 53999
                             Phoenix, Arizona 85004
                             (Address of the plans)

                        Pinnacle West Capital Corporation
                                (Name of issuer)

                               400 East Van Buren
                                 P.O. Box 52132
                             Phoenix, Arizona 85072
                (Address of issuer's principal executive office)

                         THE SAVINGS PLAN FOR EMPLOYEES
                       OF ARIZONA PUBLIC SERVICE COMPANY,

                     THE SAVINGS PLAN FOR UNION EMPLOYEES OF
                         ARIZONA PUBLIC SERVICE COMPANY

                                       AND

                        THE SAVINGS PLAN FOR EMPLOYEES OF
                        PINNACLE WEST CAPITAL CORPORATION

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

                                TABLE OF CONTENTS
                                -----------------


                                                                          PAGE
                                                                          ----


Independent Auditors' Report                                                1   
                                                                                
                                                                                
Combined Statements of Net Assets Available                                     
            for Benefits with Supplemental                                      
            Combining Information as of                                         
            December 31, 1997 and 1996                                    2 - 3 
                                                                                
                                                                                
Combined Statements of Changes in Net Assets                                    
            Available for Benefits with Supplemental                            
            Combining Information for Each of the Three                         
            Years in the Period Ended December 31, 1997                   4 - 6 
                                                                                
                                                                                
Notes to Combined Financial Statements                                    7 - 15
                                                                                
                                                                                
Exhibits Filed                                                             16   

INDEPENDENT AUDITORS' REPORT



Arizona Public Service Company
Phoenix, Arizona

We have audited the accompanying combined statements of net assets available for
benefits of The Savings Plan for Employees of Arizona  Public  Service  Company,
The Savings Plan for Union  Employees of Arizona Public Service  Company and The
Savings Plan for Employees of Pinnacle West Capital Corporation (the "Plans") as
of December 31, 1997 and 1996, and the related combined statements of changes in
net assets  available  for  benefits  for each of the three  years in the period
ended  December  31,  1997.   These  combined   financial   statements  are  the
responsibility  of the Plans'  management.  Our  responsibility is to express an
opinion on these financial statements based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion,  such  combined  financial  statements  present  fairly,  in all
material  respects,  the net assets  available  for  benefits of the Plans as of
December 31, 1997 and 1996, and the changes in net assets available for benefits
for each of the three years in the period ended  December 31, 1997 in conformity
with generally accepted accounting principles.

Our audits  were  conducted  for the  purpose of forming an opinion on the basic
combined  financial  statements  taken as a whole.  The  supplemental  combining
information  by fund is presented for the purpose of additional  analysis of the
basic combined financial statements rather than to present information regarding
the net assets  available  for benefits and changes in net assets  available for
benefits  of the  individual  funds,  and is not a  required  part of the  basic
financial statements. This supplemental information is the responsibility of the
Plans'  management.  Such  supplemental  combining  information by fund has been
subjected to the auditing procedures applied in our audits of the basic combined
financial  statements  and, in our  opinion,  is fairly  stated in all  material
respects when considered in relation to the basic combined financial  statements
taken as a whole.


DELOITTE & TOUCHE LLP
DELOITTE & TOUCHE LLP
Phoenix, Arizona
June 22, 1998

THE SAVINGS PLAN FOR EMPLOYEES OF ARIZONA PUBLIC SERVICE COMPANY,
THE SAVINGS PLAN FOR UNION EMPLOYEES OF ARIZONA PUBLIC SERVICE COMPANY AND
THE SAVINGS PLAN FOR EMPLOYEES OF PINNACLE WEST CAPITAL CORPORATION


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

COMBINED STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS WITH SUPPLEMENTAL COMBINING INFORMATION
DECEMBER 31, 1997
- --------------------------------------------------------------------------------------------------------------------------------
                                                                                                                                
                                                                                 SUPPLEMENTAL COMBINING INFORMATION
                                                                  --------------------------------------------------------------
                                                                                                                                
                                                                  PINNACLE WEST                        FIXED        AGGRESSIVE  
                                                    COMBINED       STOCK FUND      INDEX FUND       INCOME FUND     EQUITY FUND 
                                                  -------------   -------------   -------------    -------------   -------------

                                                                                                              
ASSETS:
      Investments at fair value except
      for Fixed Income Fund that is
      at contract value which approximates
      fair value (cost,
         Pinnacle West Stock Fund,
         $64,852,152;
         Index Fund,
         $55,556,633;
         Fixed Income Fund,
         $53,078,299;
         Aggressive Equity Fund,
         $36,416,877;
         International Equity Fund,
         $7,067,988;
         Lifestyle Conservative Fund,
         $2,184,528;
         Lifestyle Moderate Fund,
         $5,994,426;
         Lifestyle Aggressive Fund,
         $6,698,117;
         Participant Loan Feature,
         $19,767,046)                             $ 388,014,445   $ 141,053,827   $ 106,580,249    $  53,078,299   $  44,685,290   
      Temporary investments (at cost
         which approximates fair value)               7,548,392       1,906,886                        5,638,399                   
      Interest/Other receivable                         314,277           9,229                          305,048                   
                                                  -------------   -------------   -------------    -------------   -------------   
               Total assets                         395,877,114     142,969,942     106,580,249       59,021,746      44,685,290   
                                                  -------------   -------------   -------------    -------------   -------------   

LIABILITIES:
      Interfund transfers and other liabilities         612,967         585,513        (180,210)         192,865           1,480   
                                                  -------------   -------------   -------------    -------------   -------------   

               NET ASSETS AVAILABLE
                   FOR BENEFITS                   $ 395,264,147   $ 142,384,429   $ 106,760,459    $  58,828,881   $  44,683,810   
                                                  =============   =============   =============    =============   =============   


                                                                                                                                  
                                                                        SUPPLEMENTAL COMBINING INFORMATION
                                                  --------------------------------------------------------------------------------
                                                                    LIFESTYLE        LIFESTYLE        LIFESTYLE                   
                                                  INTERNATIONAL   CONSERVATIVE       MODERATE         AGGRESSIVE      PARTICIPANT 
                                                   EQUITY FUND        FUND             FUND              FUND         LOAN FEATURE
                                                  -------------   -------------    -------------    -------------    -------------
                                                                                                                                  
                                                                                                                
ASSETS:                                                                                                                           
      Investments at fair value except                                                                                            
      for Fixed Income Fund that is                                                                                               
      at contract value which approximates                                                                                        
      fair value (cost,                                                                                                           
         Pinnacle West Stock Fund,                                                                                                
         $64,852,152;                                                                                                             
         Index Fund,                                                                                                              
         $55,556,633;                                                                                                             
         Fixed Income Fund,                                                                                                       
         $53,078,299;                                                                                                             
         Aggressive Equity Fund,                                                                                                  
         $36,416,877;                                                                                                             
         International Equity Fund,                                                                                               
         $7,067,988;                                                                                                              
         Lifestyle Conservative Fund,                                                                                             
         $2,184,528;                                                                                                              
         Lifestyle Moderate Fund,                                                                                                 
         $5,994,426;                                                                                                              
         Lifestyle Aggressive Fund,                                                                                               
         $6,698,117;                                                                                                              
         Participant Loan Feature,                                                                                                
         $19,767,046)                             $   6,633,636   $   2,293,984    $   6,592,923    $   7,329,191    $  19,767,046
      Temporary investments (at cost                                                                                              
         which approximates fair value)                                                    3,107                                  
      Interest/Other receivable                                                                                                   
                                                  -------------   -------------    -------------    -------------    -------------
               Total assets                           6,633,636       2,293,984        6,596,030        7,329,191       19,767,046
                                                  -------------   -------------    -------------    -------------    -------------
                                                                                                                                  
LIABILITIES:                                                                                                                      
      Interfund transfers and other liabilities          42,145          (9,259)         (18,518)         (38,349)          37,300
                                                  -------------   -------------    -------------    -------------    -------------
                                                                                                                                  
               NET ASSETS AVAILABLE                                                                                               
                   FOR BENEFITS                   $   6,591,491   $   2,303,243    $   6,614,548    $   7,367,540    $  19,729,746
                                                  =============   =============    =============    =============    =============


See notes to combined financial statements.
                                       -2-

THE SAVINGS PLAN FOR EMPLOYEES OF ARIZONA PUBLIC SERVICE COMPANY,
THE SAVINGS PLAN FOR UNION EMPLOYEES OF ARIZONA PUBLIC SERVICE COMPANY AND
THE SAVINGS PLAN FOR EMPLOYEES OF PINNACLE WEST CAPITAL CORPORATION


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

COMBINED STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS WITH SUPPLEMENTAL COMBINING INFORMATION
DECEMBER 31, 1996                                                                              
- -----------------------------------------------------------------------------------------------
                                                                 
                                                                 
                                                                 
                                                                 
                                                                 
                                                    COMBINED     
                                                  ------------   
                                                                 
                                                           
ASSETS:                                                          
      Investments at fair value except                           
      for Fixed Income Fund that is                              
      at contract value which approximates                       
      fair value (cost,                                          
         Pinnacle West Stock Fund,                               
         $67,839,594;                                            
         Index Fund,                                             
         $43,143,965;                                            
         Fixed Income Fund,                                      
         $52,542,392;                                            
         Aggressive Equity Fund,                                 
         $33,506,467;                                            
         International Equity Fund,                              
         $3,159,997;                                             
         Lifestyle Conservative Fund,                            
         $1,297,857;                                             
         Lifestyle Moderate Fund,                                
         $3,483,624;                                             
         Lifestyle Aggressive Fund,                              
         $2,496,232;                                             
         Participant Loan Feature,                               
         $18,564,771)                             $306,635,785   
      Temporary investments (at cost                             
         which approximates fair value)             15,173,420   
      Interest receivable                              336,604   
                                                  ------------   
               Total assets                        322,145,809   
                                                  ------------   
                                                                 
LIABILITIES:                                                     
      Interfund transfers and other liabilities        543,692   
                                                  ------------   
                                                                 
               NET ASSETS AVAILABLE                              
                   FOR BENEFITS                   $321,602,117   
                                                  ============   

                                                                                                                               
                                                                       SUPPLEMENTAL COMBINING INFORMATION
                                                  --------------------------------------------------------------------------
                                                                                                                               
                                                  PINNACLE WEST                    FIXED         AGGRESSIVE       BALANCED     
                                                   STOCK FUND     INDEX FUND    INCOME FUND      EQUITY FUND        FUND       
                                                  ------------   ------------   ------------    ------------    ------------   
                                                                                                                               
                                                                                                             
ASSETS:                                                                                                                        
      Investments at fair value except                                                                                         
      for Fixed Income Fund that is                                                                                            
      at contract value which approximates                                                                                     
      fair value (cost,                                                                                                        
         Pinnacle West Stock Fund,                                                                                             
         $67,839,594;                                                                                                          
         Index Fund,                                                                                                           
         $43,143,965;                                                                                                          
         Fixed Income Fund,                                                                                                    
         $52,542,392;                                                                                                          
         Aggressive Equity Fund,                                                                                               
         $33,506,467;                                                                                                          
         International Equity Fund,                                                                                            
         $3,159,997;                                                                                                           
         Lifestyle Conservative Fund,                                                                                          
         $1,297,857;                                                                                                           
         Lifestyle Moderate Fund,                                                                                              
         $3,483,624;                                                                                                           
         Lifestyle Aggressive Fund,                                                                                            
         $2,496,232;                                                                                                           
         Participant Loan Feature,                                                                                             
         $18,564,771)                             $114,661,023   $ 73,255,751   $ 52,542,392    $ 36,879,918    $              
      Temporary investments (at cost                                                                                           
         which approximates fair value)              1,703,669                    13,469,751                                   
      Interest receivable                                6,821                       329,783                                   
                                                  ------------   ------------   ------------    ------------    ------------   
               Total assets                        116,371,513     73,255,751     66,341,926      36,879,918                   
                                                  ------------   ------------   ------------    ------------    ------------   
                                                                                                                               
LIABILITIES:                                                                                                                   
      Interfund transfers and other liabilities        534,074          9,070        (14,520)        (19,464)                  
                                                  ------------   ------------   ------------    ------------    ------------   
                                                                                                                               
               NET ASSETS AVAILABLE                                                                                            
                   FOR BENEFITS                   $115,837,439   $ 73,246,681   $ 66,356,446    $ 36,899,382    $              
                                                  ============   ============   ============    ============    ============   
                                                                                                                  
                                                                                                                           
                                                                      SUPPLEMENTAL COMBINING INFORMATION                   
                                                  --------------------------------------------------------------------------
                                                                  LIFESTYLE       LIFESTYLE      LIFESTYLE                  
                                                  INTERNATIONAL  CONSERVATIVE      MODERATE      AGGRESSIVE     PARTICIPANT 
                                                  EQUITY FUND        FUND            FUND           FUND        LOAN FEATURE
                                                  ------------   ------------    ------------   ------------    ------------
                                                                                                                            
                                                                                                          
ASSETS:                                                                                                                     
      Investments at fair value except                                                                                      
      for Fixed Income Fund that is                                                                                         
      at contract value which approximates                                                                                  
      fair value (cost,                                                                                                     
         Pinnacle West Stock Fund,                                                                                          
         $67,839,594;                                                                                                       
         Index Fund,                                                                                                        
         $43,143,965;                                                                                                       
         Fixed Income Fund,                                                                                                 
         $52,542,392;                                                                                                       
         Aggressive Equity Fund,                                                                                            
         $33,506,467;                                                                                                       
         International Equity Fund,                                                                                         
         $3,159,997;                                                                                                        
         Lifestyle Conservative Fund,                                                                                       
         $1,297,857;                                                                                                        
         Lifestyle Moderate Fund,                                                                                           
         $3,483,624;                                                                                                        
         Lifestyle Aggressive Fund,                                                                                         
         $2,496,232;                                                                                                        
         Participant Loan Feature,                                                                                          
         $18,564,771)                             $  3,269,793   $  1,284,840    $  3,574,423   $  2,602,874    $ 18,564,771
      Temporary investments (at cost                                                                                        
         which approximates fair value)                                                                                     
      Interest receivable                                                                                                   
                                                  ------------   ------------    ------------   ------------    ------------
               Total assets                          3,269,793      1,284,840       3,574,423      2,602,874      18,564,771
                                                  ------------   ------------    ------------   ------------    ------------
                                                                                                                            
LIABILITIES:                                                                                                                
      Interfund transfers and other liabilities            860                        (2,820)            943          35,549
                                                  ------------   ------------    ------------   ------------    ------------
                                                                                                                            
               NET ASSETS AVAILABLE                                                                                         
                   FOR BENEFITS                   $  3,268,933   $  1,284,840    $  3,577,243   $  2,601,931    $ 18,529,222
                                                  ============   ============    ============   ============    ============


See notes to combined financial statements.
                                       -3-

THE SAVINGS PLAN FOR EMPLOYEES OF ARIZONA PUBLIC SERVICE COMPANY,
THE SAVINGS PLAN FOR UNION EMPLOYEES OF ARIZONA PUBLIC SERVICE COMPANY AND
THE SAVINGS PLAN FOR EMPLOYEES OF PINNACLE WEST CAPITAL CORPORATION


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

COMBINED STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS WITH SUPPLEMENTAL COMBINING INFORMATION
FOR THE YEAR ENDED DECEMBER 31, 1997
- ----------------------------------------------------------------------------------------------------------------------
                                                                                                                         
                                                                      SUPPLEMENTAL COMBINING INFORMATION
                                                       ---------------------------------------------------------------
                                                                                                                         
                                                       PINNACLE WEST                        FIXED         AGGRESSIVE     
                                          COMBINED       STOCK FUND      INDEX FUND      INCOME FUND      EQUITY FUND    
                                       -------------   -------------   -------------    -------------    -------------   

                                                                                                       
ADDITIONS TO NET ASSETS
      ATTRIBUTED TO:
      Investment income (Note 1):
         Dividends                     $   7,934,514   $   3,872,745                                     $   2,630,859   
         Interest/other income             5,610,801          75,931   $      19,288    $   3,809,025            6,050   
         Realized gain on sale of
            investments                   11,404,543       5,727,161       4,166,257                         1,234,978   
         Unrealized appreciation
            (depreciation) of                       
            investments (Note 5)          55,797,490      29,380,243      20,911,830                         4,894,962   
                                       -------------   -------------   -------------    -------------    -------------   
           Total investment income        80,747,348      39,056,080      25,097,375        3,809,025        8,766,849   
                                       -------------   -------------   -------------    -------------    -------------   

      Contributions (Note 2):
         Employers                         7,068,458       7,068,458                                                     
         Participants                     22,670,941       3,063,982       7,183,166        4,170,698        5,456,080   
                                       -------------   -------------   -------------    -------------    -------------   
           Total contributions            29,739,399      10,132,440       7,183,166        4,170,698        5,456,080   
                                       -------------   -------------   -------------    -------------    -------------   
              Total additions            110,486,747      49,188,520      32,280,541        7,979,723       14,222,929   
                                       -------------   -------------   -------------    -------------    -------------   

DEDUCTIONS FROM NET ASSETS
        ATTRIBUTED TO:
        Benefit payments                  36,772,690      15,124,527       6,933,307        9,960,275        2,546,306   
        Administrative expenses               52,027           3,533          13,052           31,408            3,403   
        Interfund transfers                                7,513,470      (8,179,596)       5,515,605        3,888,792   
                                       -------------   -------------   -------------    -------------    -------------   
             Total deductions             36,824,717      22,641,530      (1,233,237)      15,507,288        6,438,501   
                                       -------------   -------------   -------------    -------------    -------------   
             Net increase (decrease)      73,662,030      26,546,990      33,513,778       (7,527,565)       7,784,428   

NET ASSETS AVAILABLE FOR
         BENEFITS:
        Beginning of year                321,602,117     115,837,439      73,246,681       66,356,446       36,899,382   
                                       -------------   -------------   -------------    -------------    -------------   
        End of year                    $ 395,264,147   $ 142,384,429   $ 106,760,459    $  58,828,881    $  44,683,810   
                                       =============   =============   =============    =============    =============   

                                                                                                                         
                                                              SUPPLEMENTAL COMBINING INFORMATION
                                       --------------------------------------------------------------------------------- 
                                                          LIFESTYLE        LIFESTYLE        LIFESTYLE                    
                                       INTERNATIONAL    CONSERVATIVE        MODERATE        AGGRESSIVE      PARTICIPANT  
                                        EQUITY FUND          FUND             FUND             FUND        LOAN FEATURE  
                                       -------------    -------------    -------------    -------------    ------------- 
                                                                                                                         
                                                                                                       
ADDITIONS TO NET ASSETS                                                                                                  
      ATTRIBUTED TO:                                                                                                     
      Investment income (Note 1):                                                                                        
         Dividends                     $     740,870    $     106,997    $     307,271    $     275,772                  
         Interest/other income                 1,538              130              434              367    $   1,698,038 
         Realized gain on sale of                                                                                        
            investments                       49,201           17,845          134,060           75,041                  
         Unrealized appreciation                                                                                         
            (depreciation) of                                                                                            
            investments (Note 5)            (544,148)         122,473          507,698          524,432                  
                                       -------------    -------------    -------------    -------------    ------------- 
           Total investment income           247,461          247,445          949,463          875,612        1,698,038 
                                       -------------    -------------    -------------    -------------    ------------- 
                                                                                                                         
      Contributions (Note 2):                                                                                            
         Employers                                                                                                       
         Participants                        868,477          154,334          776,314          997,890                  
                                       -------------    -------------    -------------    -------------    ------------- 
           Total contributions               868,477          154,334          776,314          997,890                  
                                       -------------    -------------    -------------    -------------    ------------- 
              Total additions              1,115,938          401,779        1,725,777        1,873,502        1,698,038 
                                       -------------    -------------    -------------    -------------    ------------- 
                                                                                                                         
DEDUCTIONS FROM NET ASSETS                                                                                               
        ATTRIBUTED TO:                                                                                                   
        Benefit payments                     404,798          285,061          499,308          205,874          813,234 
        Administrative expenses                  194               31              200              206                  
        Interfund transfers               (2,611,612)        (901,716)      (1,811,036)      (3,098,187)        (315,720)
                                       -------------    -------------    -------------    -------------    ------------- 
             Total deductions             (2,206,620)        (616,624)      (1,311,528)      (2,892,107)         497,514 
                                       -------------    -------------    -------------    -------------    ------------- 
             Net increase (decrease)       3,322,558        1,018,403        3,037,305        4,765,609        1,200,524 
                                                                                                                         
NET ASSETS AVAILABLE FOR                                                                                                 
         BENEFITS:                                                                                                       
        Beginning of year                  3,268,933        1,284,840        3,577,243        2,601,931       18,529,222 
                                       -------------    -------------    -------------    -------------    ------------- 
        End of year                    $   6,591,491    $   2,303,243    $   6,614,548    $   7,367,540    $  19,729,746 
                                       =============    =============    =============    =============    ============= 


See notes to combined financial statements.
                                       -4-

THE SAVINGS PLAN FOR EMPLOYEES OF ARIZONA PUBLIC SERVICE COMPANY,
THE SAVINGS PLAN FOR UNION EMPLOYEES OF ARIZONA PUBLIC SERVICE COMPANY AND
THE SAVINGS PLAN FOR EMPLOYEES OF PINNACLE WEST CAPITAL CORPORATION


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

COMBINED STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS WITH SUPPLEMENTAL COMBINING INFORMATION
FOR THE YEAR ENDED DECEMBER 31, 1996
- ----------------------------------------------------------------------------------------------------------
                                                           
                                              COMBINED     
                                            ------------   

                                                     
ADDITIONS TO NET ASSETS
      ATTRIBUTED TO:
      Investment income (Note 1):
         Dividends                          $  6,557,131   
         Interest income                       5,370,324   
         Income from settlement (Note 3)         957,427   
         Realized gain on sale of
            investments                        5,832,026   
         Unrealized appreciation
           (depreciation) of
            investments (Note 5)              19,357,421   
                                            ------------   
           Total investment income (loss)     38,074,329   
                                            ------------   

      Contributions (Note 2):
         Employers                             7,225,732   
         Participants                         22,693,280   
                                            ------------   
           Total contributions                29,919,012   
                                            ------------   
              Total additions                 67,993,341   
                                            ------------   

DEDUCTIONS FROM NET ASSETS
        ATTRIBUTED TO:
        Benefit payments                      15,425,820   
        Administrative expenses                   44,653   
        Interfund transfers                                
                                            ------------   
             Total deductions                 15,470,473   
                                            ------------   
             Net increase (decrease)          52,522,868   

NET ASSETS AVAILABLE FOR
         BENEFITS:
        Beginning of year                    269,079,249   
                                            ------------   
        End of year                         $321,602,117   
                                            ============   

                                                                                                                          
                                                                SUPPLEMENTAL COMBINING INFORMATION                     
                                            --------------------------------------------------------------------------
                                                                                                                          
                                            PINNACLE WEST                      FIXED       AGGRESSIVE       BALANCED      
                                             STOCK FUND     INDEX FUND      INCOME FUND    EQUITY FUND        FUND        
                                            ------------   ------------    ------------   ------------    ------------    
                                                                                                                          
                                                                                                        
ADDITIONS TO NET ASSETS                                                                                                   
      ATTRIBUTED TO:                                                                                                      
      Investment income (Note 1):                                                                                         
         Dividends                          $  3,761,585                                  $  2,322,589    $    158,356    
         Interest income                          59,289                   $  3,747,325                                   
         Income from settlement (Note 3)         351,831   $    154,273         324,919        101,025                    
         Realized gain on sale of                                                                                         
            investments                        3,180,929      1,977,669                        489,947          96,850    
         Unrealized appreciation                                                                                          
           (depreciation) of                                                                                              
            investments (Note 5)               7,818,099     11,146,619                        386,776        (288,293)   
                                            ------------   ------------    ------------   ------------    ------------    
           Total investment income (loss)     15,171,733     13,278,561       4,072,244      3,300,337         (33,087)   
                                            ------------   ------------    ------------   ------------    ------------    
                                                                                                                          
      Contributions (Note 2):                                                                                             
         Employers                             7,225,732                                                                  
         Participants                          3,720,945      6,509,011       5,416,753      5,809,125         627,436    
                                            ------------   ------------    ------------   ------------    ------------    
           Total contributions                10,946,677      6,509,011       5,416,753      5,809,125         627,436    
                                            ------------   ------------    ------------   ------------    ------------    
              Total additions                 26,118,410     19,787,572       9,488,997      9,109,462         594,349    
                                            ------------   ------------    ------------   ------------    ------------    
                                                                                                                          
DEDUCTIONS FROM NET ASSETS                                                                                                
        ATTRIBUTED TO:                                                                                                    
        Benefit payments                       8,533,725      1,863,410       3,741,062        669,266         128,928    
        Administrative expenses                    3,444          8,217          30,082          1,975             935    
        Interfund transfers                   11,023,622     (2,772,928)      3,225,332     (7,682,903)      6,648,209    
                                            ------------   ------------    ------------   ------------    ------------    
             Total deductions                 19,560,791       (901,301)      6,996,476     (7,011,662)      6,778,072    
                                            ------------   ------------    ------------   ------------    ------------    
             Net increase (decrease)           6,557,619     20,688,873       2,492,521     16,121,124      (6,183,723)   
                                                                                                                          
NET ASSETS AVAILABLE FOR                                                                                                  
         BENEFITS:                                                                                                        
        Beginning of year                    109,279,820     52,557,808      63,863,925     20,778,258       6,183,723    
                                            ------------   ------------    ------------   ------------    ------------    
        End of year                         $115,837,439   $ 73,246,681    $ 66,356,446   $ 36,899,382    $               
                                            ============   ============    ============   ============    ============    

                                                                                                                         
                                                                 SUPPLEMENTAL COMBINING INFORMATION                      
                                            ---------------------------------------------------------------------------- 
                                                              LIFESTYLE       LIFESTYLE      LIFESTYLE                   
                                            INTERNATIONAL   CONSERVATIVE      MODERATE       AGGRESSIVE     PARTICIPANT  
                                             EQUITY FUND        FUND            FUND            FUND        LOAN FEATURE 
                                            ------------    ------------    ------------    ------------    ------------ 
                                                                                                                         
                                                                                                       
ADDITIONS TO NET ASSETS                                                                                                  
      ATTRIBUTED TO:                                                                                                     
      Investment income (Note 1):                                                                                        
         Dividends                          $    109,897    $     42,362    $     77,063    $     85,279                 
         Interest income                                                                                    $  1,563,710 
         Income from settlement (Note 3)           6,662           1,980           8,351           8,386                 
         Realized gain on sale of                                                                                        
            investments                            1,454             552          74,490          10,135                 
         Unrealized appreciation                                                                                         
           (depreciation) of                                                                                             
            investments (Note 5)                 109,796         (13,017)         90,799         106,642                 
                                            ------------    ------------    ------------    ------------    ------------ 
           Total investment income (loss)        227,809          31,877         250,703         210,442       1,563,710 
                                            ------------    ------------    ------------    ------------    ------------ 
                                                                                                                         
      Contributions (Note 2):                                                                                            
         Employers                                                                                                       
         Participants                            163,786          32,290         199,787         214,147                 
                                            ------------    ------------    ------------    ------------    ------------ 
           Total contributions                   163,786          32,290         199,787         214,147                 
                                            ------------    ------------    ------------    ------------    ------------ 
              Total additions                    391,595          64,167         450,490         424,589       1,563,710 
                                            ------------    ------------    ------------    ------------    ------------ 
                                                                                                                         
DEDUCTIONS FROM NET ASSETS                                                                                               
        ATTRIBUTED TO:                                                                                                   
        Benefit payments                          12,741             264          83,506          15,224         377,694 
        Administrative expenses                                                                                          
        Interfund transfers                   (2,890,079)     (1,220,937)     (3,210,259)     (2,192,566)       (927,491)
                                            ------------    ------------    ------------    ------------    ------------ 
             Total deductions                 (2,877,338)     (1,220,673)     (3,126,753)     (2,177,342)       (549,797)
                                            ------------    ------------    ------------    ------------    ------------ 
             Net increase (decrease)           3,268,933       1,284,840       3,577,243       2,601,931       2,113,507 
                                                                                                                         
NET ASSETS AVAILABLE FOR                                                                                                 
         BENEFITS:                                                                                                       
        Beginning of year                                                                                     16,415,715 
                                            ------------    ------------    ------------    ------------    ------------ 
        End of year                         $  3,268,933    $  1,284,840    $  3,577,243    $  2,601,931    $ 18,529,222 
                                            ============    ============    ============    ============    ============ 


See notes to combined financial statements.
                                       -5-

THE SAVINGS PLAN FOR EMPLOYEES OF ARIZONA PUBLIC SERVICE COMPANY,
THE SAVINGS PLAN FOR UNION EMPLOYEES OF ARIZONA PUBLIC SERVICE COMPANY AND
THE SAVINGS PLAN FOR EMPLOYEES OF PINNACLE WEST CAPITAL CORPORATION


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

COMBINED STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS WITH SUPPLEMENTAL COMBINING INFORMATION
FOR THE YEAR ENDED DECEMBER 31, 1995
- ---------------------------------------------------------------------------------------------------------------
                                                                                                     
                                                            SUPPLEMENTAL COMBINING INFORMATION
                                                      -------------------------------------------
                                                      PINNACLE WEST                      FIXED       
                                         COMBINED      STOCK FUND     INDEX FUND      INCOME FUND    
                                       ------------   ------------   ------------    ------------    

                                                                                      
ADDITIONS TO NET ASSETS
      ATTRIBUTED TO:
      Investment income (Note 1):
         Dividends                     $  4,831,483   $  3,548,574                                   
         Interest income                  5,117,786         75,680                   $  3,813,463    
         Realized gain on sale of
            investments                   2,859,474      1,552,878   $  1,161,262                    
         Unrealized appreciation
            of  investments (Note 5)     47,736,651     32,727,519     11,670,607                    
                                       ------------   ------------   ------------    ------------    
           Total investment income       60,545,394     37,904,651     12,831,869       3,813,463    
                                       ------------   ------------   ------------    ------------    

      Contributions (Note 2):
         Employers                        6,747,587      6,747,587                                   
         Participants                    20,204,098      4,043,616      5,077,110       6,757,160    
                                       ------------   ------------   ------------    ------------    
           Total contributions           26,951,685     10,791,203      5,077,110       6,757,160    
                                       ------------   ------------   ------------    ------------    
              Total additions            87,497,079     48,695,854     17,908,979      10,570,623    
                                       ------------   ------------   ------------    ------------    

DEDUCTIONS FROM NET ASSETS
        ATTRIBUTED TO:
        Benefit payments                 15,932,169      9,015,731      1,727,992       4,533,469    
        Administrative expenses              43,968          4,085          3,855          33,552    
        Interfund transfers                              9,646,105     (4,799,352)      6,468,018    
                                       ------------   ------------   ------------    ------------    
             Total deductions            15,976,137     18,665,921     (3,067,505)     11,035,039    
                                       ------------   ------------   ------------    ------------    
             Net increase (decrease)     71,520,942     30,029,933     20,976,484        (464,416)   

NET ASSETS AVAILABLE FOR
         BENEFITS:
        Beginning of year               197,558,307     79,249,887     31,581,324      64,328,341    
                                       ------------   ------------   ------------    ------------    
        End of year                    $269,079,249   $109,279,820   $ 52,557,808    $ 63,863,925    
                                       ============   ============   ============    ============    

                                                                                    
                                            SUPPLEMENTAL COMBINING INFORMATION   
                                       -------------------------------------------- 
                                        AGGRESSIVE       BALANCED      PARTICIPANT  
                                        EQUITY FUND        FUND        LOAN FEATURE 
                                       ------------    ------------    ------------ 
                                                                                    
                                                                        
ADDITIONS TO NET ASSETS                                                             
      ATTRIBUTED TO:                                                                
      Investment income (Note 1):                                                   
         Dividends                     $  1,084,332    $    198,577                 
         Interest income                                               $  1,228,643 
         Realized gain on sale of                                                   
            investments                     128,349          16,985                 
         Unrealized appreciation                                                    
            of  investments (Note 5)      2,957,516         381,009                 
                                       ------------    ------------    ------------ 
           Total investment income        4,170,197         596,571       1,228,643 
                                       ------------    ------------    ------------ 
                                                                                    
      Contributions (Note 2):                                                       
         Employers                                                                  
         Participants                     3,185,022       1,141,190                 
                                       ------------    ------------    ------------ 
           Total contributions            3,185,022       1,141,190                 
                                       ------------    ------------    ------------ 
              Total additions             7,355,219       1,737,761       1,228,643 
                                       ------------    ------------    ------------ 
                                                                                    
DEDUCTIONS FROM NET ASSETS                                                          
        ATTRIBUTED TO:                                                              
        Benefit payments                    345,062         115,316         194,599 
        Administrative expenses               1,376           1,100                 
        Interfund transfers              (7,402,443)     (1,475,470)     (2,436,858)
                                       ------------    ------------    ------------ 
             Total deductions            (7,056,005)     (1,359,054)     (2,242,259)
                                       ------------    ------------    ------------ 
             Net increase (decrease)     14,411,224       3,096,815       3,470,902 
                                                                                    
NET ASSETS AVAILABLE FOR                                                            
         BENEFITS:                                                                  
        Beginning of year                 6,367,034       3,086,908      12,944,813 
                                       ------------    ------------    ------------ 
        End of year                    $ 20,778,258    $  6,183,723    $ 16,415,715 
                                       ============    ============    ============ 


See notes to combined financial statements.
                                       -6-

                         THE SAVINGS PLAN FOR EMPLOYEES
                       OF ARIZONA PUBLIC SERVICE COMPANY,

                      THE SAVINGS PLAN FOR UNION EMPLOYEES
                        OF ARIZONA PUBLIC SERVICE COMPANY

                                       AND

                        THE SAVINGS PLAN FOR EMPLOYEES OF
                        PINNACLE WEST CAPITAL CORPORATION

                     NOTES TO COMBINED FINANCIAL STATEMENTS
                     --------------------------------------


1.    SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

      Method of Accounting - The financial statements in this report reflect the
   combined  assets,  liabilities  and net assets  available for benefits of The
   Savings  Plan for  Employees  of Arizona  Public  Service  Company  (the "APS
   Savings  Plan"),  The  Savings  Plan for Union  Employees  of Arizona  Public
   Service Company (the "APS Union Plan"), and The Savings Plan for Employees of
   Pinnacle West Capital Corporation (the "Pinnacle West Plan"). The APS Savings
   Plan,  the APS  Union  Plan,  and the  Pinnacle  West  Plan are  collectively
   referred to as the  "Plans."  The  combined  financial  statements  have been
   prepared on the accrual  basis of  accounting.  Investment  transactions  are
   recorded as of the trade date.  Dividend income is recorded as of ex-dividend
   dates.  All the outstanding  shares of common stock of Arizona Public Service
   Company  ("APS") are owned by Pinnacle  West Capital  Corporation  ("Pinnacle
   West").

      Investments - The Plans consist of a salary  reduction  arrangement and an
   employer matching contribution feature. The investment programs for the Plans
   consist of:

         Pinnacle West Stock Fund -- The fund consists primarily of common stock
      of Pinnacle West. The common stock is stated at fair value based on quoted
      market prices in an active market.

         Index Fund -- The fund  consists  of common  stocks  maintained  by the
      Trustee  (defined below) as part of a commingled  fund. The fund is stated
      at fair value generally based on the last reported sales price on the last
      business day of the calendar year.

         Fixed Income Fund -- The fund consists  primarily of several guaranteed
      investment   contracts   with  varying   rates  of  interest  and  varying
      maturities.  The fund is stated at contract value which  approximates fair
      value. 
                                      -7-

         Aggressive Equity Fund -- The fund consists  primarily of common stocks
      maintained by Putnam Investments as part of the Putnam Voyager Fund, Class
      A. The fund is stated at fair value  generally  based on the last reported
      sales price on the last business day of the calendar year.

         Balanced Fund -- The fund  consists of common and preferred  stocks and
      bonds  managed by Fidelity  Investments  as part of the Fidelity  Balanced
      Fund.  The  fund is  stated  at fair  value  generally  based  on the last
      reported  sales  price  on the last  business  day of the  calendar  year.
      Effective  June 27, 1996,  the fund was no longer offered as an investment
      choice.

         International  Equity  Fund -- The fund  consists  primarily  of stocks
      outside the United States and maintained by Franklin  Templeton as part of
      the  Templeton  Foreign Fund.  The fund is stated at fair value  generally
      based on the last  reported  sales price on the last  business  day of the
      calendar year. The fund was added as an investment  choice  effective July
      1, 1996.  The APS Union  Plan does not  participate  in the  International
      Equity Fund.

         Conservative,  Moderate  and  Aggressive  Lifestyle  Funds -- The funds
      consist  primarily of cash,  domestic stocks,  international  stocks,  and
      domestic  bonds and are  maintained  by the Vanguard  Group as part of the
      Lifestrategy  Portfolios:  Conservative Growth Portfolio,  Moderate Growth
      Portfolio,  and  Growth  Portfolio.  The  funds are  stated at fair  value
      generally  based on the last reported sales price on the last business day
      of the  calendar  year.  The  funds  were  added as an  investment  choice
      effective  July 1, 1996.  The APS Union Plan does not  participate  in the
      Conservative and Aggressive Lifestyle Funds.

      Payment of Benefits - Benefits are recorded when paid.

      Realized Gain (Loss) and Unrealized Appreciation (Depreciation) - Realized
   gains  (losses)  are  determined  based  on  the  average   historical  cost.
   Unrealized appreciation  (depreciation) is determined based on the fair value
   of assets at the beginning of the Plan year.

      Use of Estimates - The  preparation of financial  statements in conformity
   with generally accepted accounting principles necessarily requires management
   to make estimates and assumptions  that affect the reported amounts of assets
   and  liabilities  and disclosure of contingent  assets and liabilities at the
   date of the  financial  statements  and the reported  amounts of revenues and
   expenses during the reporting period.  Actual results could differ from these
   estimates.
                                      -8-

2.    DESCRIPTION OF THE PLANS

      General - The APS Savings Plan and APS Union Plan (collectively,  the "APS
   Plans")  are  administered  by a  committee  appointed  by the APS  Board  of
   Directors. The Pinnacle West Plan is administered by a committee appointed by
   the Pinnacle West Board of Directors. The Plans are subject to the provisions
   of the  Employee  Retirement  Income  Security Act of 1974  ("ERISA").  State
   Street Bank and Trust  Company (the  "Trustee")  is the Trustee for the Plans
   under a master trust agreement.

      Eligibility - All employees of APS and salaried employees of Pinnacle West
   (collectively, the "Companies" or the "Employer") are eligible to participate
   in the pre-tax and after-tax  features of the Plans upon attaining age 21 and
   completing  thirty-one  days of consecutive  employment for the APS Plans and
   thirty days of  consecutive  employment  for the Pinnacle West Plan,  and are
   eligible to  participate  in the matching  feature upon  attaining age 21 and
   completing one year of service.  The Pinnacle West Plan allows  participation
   by employees of a company that becomes an affiliate of Pinnacle  West if such
   employees  were  formerly  participants  in a certain type of qualified  plan
   sponsored by their  employer,  regardless of whether they have  satisfied the
   Pinnacle West Plan's other eligibility requirements.

      Contributions  -  Participants  in the APS Union  Plan may  direct  APS to
   contribute any whole percentage from 1% to 10% of the  participants'  pre-tax
   base pay as their tax deferred contribution to the Plan. In addition to or in
   lieu of making tax deferred contributions to the APS Union Plan, participants
   may elect to make contributions of up to 10% of their after-tax base pay as a
   voluntary contribution,  provided that in no event can the total tax deferred
   and voluntary contributions made by any participant in any year exceed 16% of
   his or her base pay.  Effective January 1, 1996, the APS Savings Plan and the
   Pinnacle West Plan were changed to allow employees to contribute up to 16% of
   their pre-tax base pay and up to 16% of their  after-tax  base pay,  provided
   that in no event would the total tax  deferred  and  voluntary  contributions
   made by any  participant  in any  year  exceed  16% of his or her  base  pay.
   Previously,  the maximum  allowable  contribution for participants in the APS
   Savings Plan and the Pinnacle  West Plan were the same as the APS Union Plan.
   The maximum  allowable base pay ($160,000 in 1997,  $150,000 in 1996) and tax
   deferred  contribution  ($9,500)  are linked to the cost of living  index and
   could change on an annual basis.

      Prior to March 1, 1995,  for the APS Savings  Plan and the  Pinnacle  West
   Plan, and April 1, 1995, for the APS Union Plan, the Companies contributed to
   the  account of each  participant  in the Plans'  matching  feature a minimum
   amount  equal to 30% of such  participant's  contribution  of up to 6% of the
   participant's  pre-tax base pay (defined here as the participant's  "required
   contribution").  Employer  contributions  were increased (i) by an additional
   one percent for each one percent  increase in Pinnacle West  consolidated net
   income  from  continuing  operations  over  the  prior  year  and  (ii) by an
   additional  amount  determined at the sole discretion of each Company's Board
   of Directors, up to a total
                                      -9-

   Employer   contribution  of  not  more  than  50%  of  participant   required
   contributions.  Effective  March 1, 1995,  for the APS  Savings  Plan and the
   Pinnacle  West Plan,  and April 1,  1995,  for the APS Union  Plan,  Employer
   contributions  were  fixed at 50% of the  first 6% of an  employee's  pre-tax
   contributions.  The Employer  contributions  may be in cash,  common stock or
   other property acceptable to the Trustee.

      The Plans allow  rollover  contributions  from another  qualified  plan or
   individual retirement rollover account, subject to certain criteria.

      Investment  Programs - Participants'  contributions may be invested in one
   or more of the following  funds:  Pinnacle West Stock Fund, Index Fund, Fixed
   Income Fund,  Aggressive Equity Fund,  International  Equity Fund,  Lifestyle
   Conservative Fund,  Lifestyle  Moderate Fund, and Lifestyle  Aggressive Fund.
   Participants in the APS Union Plan may not invest in the International Equity
   Fund, Lifestyle  Conservative Fund, or Lifestyle Aggressive Fund. The balance
   of  non-participant-directed  contributions  and related earnings  represents
   approximately  $88,436,178  and  $68,028,037 of the net assets  available for
   benefits in the Pinnacle West Stock and Fixed Income Funds for 1997 and 1996,
   respectively.

      The Balanced Fund was no longer offered as an investment choice as of June
   27, 1996.  Employee  funds  invested in the Balanced Fund were  automatically
   transferred into the Fixed Income Fund on June 27, 1996. Participants had the
   opportunity to make a one-time  special  interfund  transfer  between July 1,
   1996 and July 14, 1996, to transfer the funds out of the Fixed Income Fund.

      Loan  Feature  -   Participants   may  borrow  money  from  their  pre-tax
   contributions  account,  vested Employer  contributions  account and rollover
   account (if any). Participants may not borrow against their Employer transfer
   account or their after-tax contributions accounts.

      The  minimum  participant  loan  available  is  $1,000,  and  the  maximum
   available is 50% of the participant's  vested account balance, up to $50,000,
   reduced by the participant's highest outstanding loan balance in the 12-month
   period  ending  on the day  before  the  loan is  made.  Only  one  loan  per
   participant  may be  outstanding  at any one time.  Loan terms range from six
   months to five  years,  or up to 15 years  for the  purchase  of a  principal
   residence.  An administrative fee is charged to the participant's account for
   each loan.

      The interest  rate is  determined at the time the loan is requested and is
   fixed for the life of the loan.  The  interest  rate is the State Street Bank
   and Trust  Company's  prime interest rate plus one percent,  determined as of
   the first  business  day of the month in which the loan is  issued.  Interest
   rates for loans issued during 1997 ranged from 9.25% to 9.50%.

      Loans are treated as transfers from the participant's  investment funds on
   a pro-rata basis to the Participant Loan Feature. Loan repayments are treated
   as transfers  from the 
                                      -10-

   Loan  Feature  to  the   participant's   investment   funds,   based  on  the
   participant's  current  investment  election.   Loan  repayments,   including
   interest,  are generally made through  irrevocable  semi-monthly (for the APS
   Plans) or bi-weekly (for the Pinnacle West Plan) payroll deductions.

      Vesting  - Each  participant  is  fully  vested  as to  the  participant's
   contribution  account  (consisting  of the  participant's  contributions  and
   related income and appreciation or  depreciation).  The  participants  become
   vested  in  their  Employer  contribution  account  (consisting  of  Employer
   contributions  and related income and  appreciation or  depreciation)  in the
   event of  termination  of service by death,  disability or  retirement,  upon
   attaining the age of  sixty-five,  upon  completion of five years of service,
   upon  termination of the Plans, or upon complete  discontinuance  of Employer
   contributions;  otherwise,  participants  vest in graduated  amounts with 100
   percent vesting in five years of Plan participation, beginning with the first
   Plan year of Employee participation.

      Withdrawals and  Distributions - A participant may at any time make a full
   or  partial  withdrawal  of  the  balance  in  the  participant's   after-tax
   contribution  account and rollover  contribution  account. No withdrawals are
   permitted from a participant's transfer account. No withdrawals are permitted
   from the participant's  pre-tax  contribution  account,  except under certain
   limited  circumstances   relating  to  financial  hardship.  If  an  employee
   withdraws  pre-tax  contributions,  the only earnings on those  contributions
   that  can  be  withdrawn  are  those  credited  prior  to  1989.   Generally,
   participants who are fully vested and who have  participated in the Plans for
   five  complete  Plan  years  may  withdraw  the  amount  in  their   Employer
   contribution account. When the participant's employment with the Companies is
   terminated, the participant generally can elect to receive a distribution, as
   soon  as  administratively  possible,  of the  vested  portion  of his or her
   Employer  contribution  account together with the participant's  contribution
   accounts.

      Forfeitures - Forfeitures of nonvested  Employer  contributions will occur
   upon  distribution  following  termination of employment  with the Companies.
   However,  if a former  participant again becomes an employee of the Companies
   prior to the end of the fifth  calendar  year  following the calendar year in
   which the participant's  earlier  termination of employment occurred (and, in
   the case of the APS Plans, only if the participant, upon reemployment, repays
   in full the amount previously  distributed from the APS Plans), the forfeited
   Employer  contributions  will  be  restored  to  the  participant's  Employer
   contribution  account.   Forfeitures  are  used  to  reduce  future  Employer
   contributions to the Plans.

      Termination of the Plans - It is the Companies'  present  expectation that
   these  Plans and the  payment of  Employer  contributions  will be  continued
   indefinitely. However, continuance of any feature of the Plans is not assumed
   as  a  contractual  obligation.  The  Companies,  at  their  discretion,  may
   terminate their  respective  plans and distribute net assets.  In this event,
   the  balance  credited  to  the  accounts  of  participants  at the  date  of
   termination shall be fully vested and nonforfeitable.
                                      -11-

3.    INCOME FROM SETTLEMENT

      Pursuant to the  settlement  of a class action  lawsuit,  payment was made
   during 1996 on behalf of certain  purchasers  of Pinnacle  West common stock,
   and certain  participants  in the Plans were entitled to receive a portion of
   the  settlement.  A  settlement  check of  $903,751  was  deposited  into the
   Lifestyle Moderate Fund on September 20, 1996.  Earnings within the Lifestyle
   Moderate Fund on the settlement  distribution  were $53,676.  On December 20,
   1996, the settlement  distribution  and related earnings were transferred out
   of the Lifestyle Moderate Fund and allocated into the respective  participant
   accounts,  based  on  each  participant's  current  election  option.  If  an
   individual  previously  received a full distribution from the  TRAYSOP\PAYSOP
   Plan,  which  was  previously  liquidated  and  terminated,   the  settlement
   attributable to that plan was distributed by separate check in 1997.

4.    INCOME TAX STATUS

      The Plans  have been  determined  by the  Internal  Revenue  Service to be
   qualified plans under the provisions of the Internal Revenue Code. As long as
   the Plans continue to be so qualified,  under present Federal income tax laws
   and  regulations:  (a)  participants  will not be currently taxed on Employer
   contributions,  on their  own  pre-tax  contributions  (see  Note  2),  or on
   investment earnings on any contributions at the time such investment earnings
   are received by the Trustee,  but will be subject to tax thereon at such time
   as they receive actual benefits from the Plans; and (b) the Plans will not be
   taxed on their dividend and interest  income or any capital gains realized by
   them or on any unrealized appreciation of investments.

5.    UNREALIZED APPRECIATION (DEPRECIATION) OF INVESTMENTS

      Changes in unrealized appreciation  (depreciation) of investments for each
   of the three years in the period ended December 31, 1997 were as follows:

                     Unrealized Appreciation (Depreciation)
                     --------------------------------------



                                           Beginning of Year      End of Year             Change
                                           -----------------   -----------------   -----------------
                  1997
                  ----
                                                                                      
               Pinnacle West Stock Fund      $  46,821,429       $  76,201,672       $  29,380,243
               Index Fund                       30,111,786          51,023,616          20,911,830
               Aggressive Equity Fund            3,373,451           8,268,413           4,894,962
               International Equity Fund           109,796            (434,352)           (544,148)
               Lifestyle Conservative Fund         (13,017)            109,456             122,473
               Lifestyle Moderate Fund              90,799             598,497             507,698
               Lifestyle Aggressive Fund           106,642             631,074             524,432
                                             -------------       -------------       -------------
                    Total                    $  80,600,886       $ 136,398,376       $  55,797,490
                                             =============       =============       =============
 
                                      -12-



                  1996
                  ----
                                                                                     
               Pinnacle West Stock Fund      $ 39,003,330        $ 46,821,429        $  7,818,099
               Index Fund                      18,965,167          30,111,786          11,146,619
               Aggressive Equity Fund           2,986,675           3,373,451             386,776
               Balanced Fund                      288,293                   0            (288,293)
               International Equity Fund                0             109,796             109,796
               Lifestyle Conservative Fund              0             (13,017)            (13,017)
               Lifestyle Moderate Fund                  0              90,799              90,799
               Lifestyle Aggressive Fund                0             106,642             106,642
                                             ------------        ------------        ------------
                    Total                    $ 61,243,465        $ 80,600,886        $ 19,357,421
                                             ============        ============        ============
                                                                               
                  1995
                  ----
               Pinnacle West Stock Fund      $  6,275,811        $ 39,003,330        $ 32,727,519
               Index Fund                       7,294,560          18,965,167          11,670,607
               Aggressive Equity Fund              29,159           2,986,675           2,957,516
               Balanced Fund                      (92,716)            288,293             381,009
                                             ------------        ------------        ------------
                    Total                    $ 13,506,814        $ 61,243,465        $ 47,736,651
                                             ============        ============        ============


6.    GUARANTEED INVESTMENT CONTRACTS                                      
                                                                             
      Under the  contracts,  interest rates on guaranteed  investment  contracts
   (GICs) vary  within the Fixed  Income  Fund.  The  contracts  have a weighted
   average  crediting  interest  rate at December  31, 1997,  1996,  and 1995 of
   6.82%,   6.31%,  and  6.05%,   respectively.   The  average  yield  for  1997
   approximated  the weighted  average  crediting  interest  rate. The crediting
   interest rates on the GICs may be reset on a quarterly or semi-annual  basis,
   or may be fixed, based on the terms of the contract.

      Four of the GICs are  managed  synthetic  investment  contracts.  The fair
   value of the trust  assets  related to these  contracts is  $10,553,461.  The
   contract value of the trust assets is $10,487,314.

7.    BENEFITS PAYABLE

      As of  December  31,  1997 and 1996,  net assets  available  for  benefits
   included benefits of $1,958 and $125,711,  respectively,  due to participants
   who had withdrawn from participation in the Plans.

8.    PARTICIPATING EMPLOYEES

      As of  December  31,  1997 and 1996,  the  aggregate  number of  employees
   participating in the Plans was 5,417 and 5,346, respectively.
                                      -13-

9.    NET ASSET VALUE PER UNIT

      In  accordance  with the  provisions of the Plans,  the Trustee  maintains
   separate units of  participation in the Plans and related net asset value per
   unit for the Pinnacle West Stock,  Index,  Fixed Income,  Aggressive  Equity,
   International  Equity,  and Lifestyle  Conservative,  Moderate and Aggressive
   Funds.  The number of units and  related net asset value per unit at December
   31 are:

                                         Net Asset Value
                                             Per Unit         Number of Units
                                         ----------------     ---------------
                   1997          
                   ----          
         Pinnacle West Stock Fund          $  23.231300          6,128,991
         Index Fund                           20.346475          5,247,123
         Fixed Income Fund                     5.290992         11,118,686
         Aggressive Equity Fund               84.349358            529,747
         International Equity Fund            40.307033            163,532
         Lifestyle Conservative               18.656291            123,457
         Lifestyle Moderate                   25.870800            255,676
         Lifestyle Aggressive                 33.196047            221,940
                                                             
                   1996
                   ----
         Pinnacle West Stock Fund          $  16.880499          6,862,205
         Index Fund                           15.263426          4,798,836
         Fixed Income Fund                     4.969295         13,353,292
         Aggressive Equity Fund               66.977409            550,923
         International Equity Fund            37.843382             86,381
         Lifestyle Conservative               15.979735             80,404
         Lifestyle Moderate                   21.594078            165,659
         Lifestyle Aggressive                 27.182799             95,720
                                                             
                                                          
10.   RELATED PARTY TRANSACTIONS

      Costs of Administration - Substantially all costs of administration of the
   Plans have been paid by the Companies except for loan administration fees.

                            Pinnacle West Stock Fund
                            ------------------------


                                                               1997            1996            1995
                                                               ----            ----            ----
                                                                                         
                                                                                        
Shares of Pinnacle West common stock held by the Plans       3,328,704       3,611,371       3,747,471
                                                                                         
Employer cash contributions                                $ 7,068,458     $ 7,225,732     $ 6,747,587
Investments by the Plans in Pinnacle West common stock     $ 5,675,942     $ 4,494,219     $ 3,274,433
Sales made by the Plans of Pinnacle West common stock      $14,390,546     $ 8,572,009     $ 7,459,282
Aggregate cost of Pinnacle West common stock sold          $ 8,663,385     $ 5,391,080     $ 5,906,404

                                      -14-

                                   Index Fund
                                   ----------


                                                             1997            1996            1995
                                                             ----            ----            ----
                                                                                       
                                                                                        
Investments by the Plans in Trustee's Index Fund         $17,339,038     $13,147,476     $11,841,434
Sales made by the Plans of Trustee's Index Fund          $ 9,092,627     $ 5,243,720     $ 3,804,238
Aggregate cost of Trustee's Index Fund sold              $ 4,926,370     $ 3,266,052     $ 2,642,976



              Temporary Investments in Funds Managed by the Trustee
              -----------------------------------------------------


                                                             1997            1996            1995
                                                             ----            ----            ----
                                                                                       
                                                                                        
Investments by the Plans in temporary investment funds   $50,617,593     $46,840,277     $51,411,186
Sales made by the Plans of temporary investment funds    $58,245,727     $33,293,798     $55,197,746


              The temporary investments are bought and sold at par.
                                      -15-
                                        
Exhibits Filed.
- ---------------


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


   23.1                    Independent Auditors' Consent

                                   SIGNATURES


         The Plan.  Pursuant to the requirements of the Securities  Exchange Act
of 1934,  the  Committee  has duly caused this annual report to be signed by the
undersigned hereunto duly authorized.

                                            THE SAVINGS PLAN FOR EMPLOYEES OF
                                            ARIZONA PUBLIC SERVICE COMPANY


                                            THE SAVINGS PLAN FOR UNION EMPLOYEES
                                            OF ARIZONA PUBLIC SERVICE COMPANY
                                                      (Name of Plans)



Date:    June 29, 1998                      By  Armando B. Flores
                                                --------------------------------
                                                Armando B. Flores
                                                Chairman of the Committee
                                                and Senior Vice President,
                                                Corporate Business Services,
                                                Arizona Public Service Company