Exhibit 99.1

                                     IN OUR ELEMENT

                                        [PHOTO]

                                      Pinnacle West
                                  Capital Corporation

                                  Analyst Presentations
                                        May 2003

                               Forward-Looking Statements

    This  presentation   contains   forward-looking   statements  based  on  current
    expectations,  and the Company assumes no obligation to update these  statements
    or make any further  statements  on any of these  issues,  except as required by
    applicable law. Because actual results may differ materially from  expectations,
    the Company cautions readers not to place undue reliance on these statements.  A
    number  of  factors  could  cause  future  results  to  differ  materially  from
    historical  results, or from results or outcomes currently expected or sought by
    the Company.  These factors  include the ongoing  restructuring  of the electric
    industry;  including the introduction of retail electric  competition in Arizona
    and decisions  impacting  wholesale  competition;  the outcome of regulatory and
    legislative  proceedings  relating  to  the  restructuring;  state  and  federal
    regulatory and legislative decisions and actions, including price caps and other
    market constraints imposed by the FERC; regional economic and market conditions,
    including  the  California  energy  situation and  completion of generation  and
    transmission  construction in the region, which could affect customer growth and
    the cost of power  supplies;  the cost of debt and equity  capital and access to
    capital markets;  energy usage;  weather variations affecting local and regional
    customer  energy usage;  conservation  programs;  power plant  performance;  the
    successful completion of our generation construction program;  regulatory issues
    associated with generation construction , such as permitting and licensing;  our
    ability to compete successfully outside traditional regulated markets (including
    the wholesale market);our ability to manage our marketing and trading activities
    and the use of derivative contracts in our business;  technological developments
    in the electric industry; the performance of the stock market, which affects the
    amount  of  our  required   contributions   to  our  pension  plan  and  nuclear
    decommissioning  trust funds; the strength of the real estate market in SunCor's
    market  areas,   which  include   Arizona,   New  Mexico  and  Utah;  and  other
    uncertainties,  all of which  are  difficult  to  predict  and many of which are
    beyond our control.

                                                                                   2

    In Our Element

    [PHOTO]

    Capturing the benefits of superior growth...

    Maintaining operational excellence...

    Managing market risks and commodity exposure...

    Navigating the regulatory landscape...

                                                                                   3

                       CAPTURING THE BENEFITS OF SUPERIOR GROWTH

                         LEADING 2002 POPULATION GROWTH STATES

                                         [MAP]

                                                                                   4

                        CAPTURING THE BENEFITS OF SUPERIOR GROWTH

                          LEADING 2002 POPULATION GROWTH STATES

                                          [MAP]

                                           APS
                                         2ND IN
                                        CUSTOMER
                                         GROWTH
                                       NATIONALLY

                                                                                   5

                           Maintaining Operational Excellence

                             IMPROVING CUSTOMER EFFICIENCY

                                    CUMULATIVE CHANGE
                            ---------------------------------
                             1999     2000     2001     2002
                            ------   ------   ------   ------
    Average Customers        0.00%    4.10%    7.90%   11.30%
    Employees                0.00%    1.80%    5.30%    1.80%

                                           APS
                                         1ST IN
                                        CUSTOMER
                                         SERVICE
                                       IN THE WEST

    * Source: JD Powers, March 2003

                                                                                   6

                           Maintaining Operational Excellence

    Generation                              Delivery

    *    Palo Verde remains the             *    High customer growth
         top power producer in the
         United States                      *    Strong reliability

    *    Fossil availability at             *    Transmission and
         record levels                           distribution expansion to
                                                 meet growth and sustain
    *    New plant construction on               reliability
         time and under budget

                                                                                   7

                       MANAGING MARKET RISK & COMMODITY EXPOSURE
                          WESTERN POWER MARKETS SPARK SPREADS

                                         $/MWh
             --------------------------------------------------------------
             Date      On-Peak Actual            On-Peak Forwards      Date
             ----      --------------            ----------------      ----
             Jan-01        159.76
             Feb-01        178.44
             Mar-01        187.80
             Apr-01        182.97
             May-01        230.80
             Jun-01         61.28
             Jul-01         43.65
             Aug-01         30.09
             Sep-01         15.85
             Oct-01         12.56
             Nov-01          9.64
             Dec-01         13.13
             Jan-02          8.80
             Feb-02          8.78
             Mar-02         14.99
             Apr-02          8.86
             May-02          7.25
             Jun-02         15.20
             Jul-02         23.58
             Aug-02         11.39
             Sep-02         13.80
             Oct-02          7.93
             Nov-02         12.37
             Dec-02         10.51
             Jan-03          8.97
             Feb-03         11.64
             Mar-03         14.43
             Apr-03          9.90
                                                       9.31            May-03
                                                      18.69            Jun-03
                                                      29.21            Jul-03
                                                      31.24            Aug-03
                                                      18.36            Sep-03
                                                      12.20            Oct-03
                                                      12.46            Nov-03
                                                      13.32            Dec-03
                                                      12.51            Jan-04
                                                      12.40            Feb-04
                                                      10.61            Mar-04
                                                      10.29            Apr-04
                                                      13.30            May-04
                                                      17.49            Jun-04
                                                      25.94            Jul-04
                                                      30.76            Aug-04
                                                      17.71            Sep-04
                                                      12.05            Oct-04
                                                      11.30            Nov-04
                                                      11.39            Dec-04
                                                      11.70            Jan-05
                                                      11.32            Feb-05
                                                       9.86            Mar-05
                                                       9.35            Apr-05
                                                      11.86            May-05
                                                      15.56            Jun-05
                                                      20.14            Jul-05
                                                      24.48            Aug-05
                                                      13.18            Sep-05
                                                      10.29            Oct-05
                                                       9.50            Nov-05
                                                       9.62            Dec-05

    ASSUMPTIONS: PALO VERDE ELECTRICITY, PERMIAN BASIS NATURAL GAS,
                 7000 BTU/MWH HEAT RATE

                                                                                   8

                       MANAGING MARKET RISK & COMMODITY EXPOSURE
                      LONG-TERM SOUTHWEST REGIONAL ENERGY PROFILE

                                              MWs
                               ---------------------------------
                                2003     2004     2005     2006
                               ------   ------   ------   ------
    Existing Generation        51,000   52,000   51,000   50,000
    New Generation             13,000   16,000   18,000   19,000
    Peak Load                  64,000   67,000   69,000   71,000

                                                                                   9

                        MANAGING MARKET RISK & COMMODITY EXPOSURE
                              APS RESOURCES FOR RETAIL LOAD

                                               MW
                               ---------------------------------
                                2003     2004     2005     2006
                               ------   ------   ------   ------
    APS Existing Resources      5,000    5,000    5,000    5,000
    Track B Resources           1,800    1,800    1,800    1,700
    Peak Load                   6,500    7,000    7,000    7,500

                                                                                  10

                       MANAGING MARKET RISK & COMMODITY EXPOSURE
                         APS NATURAL GAS DEMAND FOR RETAIL LOAD

                                            Millions
                                             mmbtu
                               ---------------------------------
                                           Projected
                               ---------------------------------
                                2003     2004     2005     2006
                               ------   ------   ------   ------
    Hedge                       25-30    25-30        0        0
    Gas Requirements            30-35    30-35    30-35    30-35

                                                                                  11

                           Navigating the Regulatory Landscape

                                            Beginning                      Ending
                                            ---------                      ------
    Track A Decision                       January 2002              September 10, 2002

    $125MM Financing Application         November 8, 2002            November 22, 2002

    Track B Decision                       January 2002                March 14, 2003

    $500MM Financing Application        September 16, 2002             March 27, 2003

    Track B Procurement                  February 27, 2003              July 1, 2003

    Adjustment Mechanisms Docket           February 2002      August 2003, estimated completion

    General Rate Case                        June 2003       December 2004, estimated completion

    Federal Issues                           On Going                     On Going

                                                                                  12

                           Navigating the Regulatory Landscape

                                            Beginning                      Ending
                                            ---------                      ------
    Track A Decision                       January 2002              September 10, 2002

    $125MM Financing Application         November 8, 2002            November 22, 2002

    Track B Decision                       January 2002                March 14, 2003

    $500MM Financing Application        September 16, 2002             March 27, 2003

    Track B Procurement                  February 27, 2003              July 1, 2003

    Adjustment Mechanisms Docket           February 2002      August 2003, estimated completion

    General Rate Case                        June 2003       December 2004, estimated completion

    Federal Issues                           On Going                     On Going

                                                                                  13

                           Navigating the Regulatory Landscape
                                Track B Procurement Needs

                             APS Retail Energy Requirement

                                                            GWHs
                                       ---------------------------------------------
                                        2003         2004         2005         2006
                                       ------       ------       ------       ------
    APS Existing Resources             22,000       23,000       23,000       24,000
    Track B Results                     1,900        3,000        2,900        2,700
    Remaining                           2,000        1,200        3,000        3,400

                                                                                  14

                          NAVIGATING THE REGULATORY LANDSCAPE
                              TRACK B PROCUREMENT CONTRACTS

                                                      MWHs
               ----------------------------------------------------------------------------------
                                                      2003
               ----------------------------------------------------------------------------------
                                                          Jul    Aug   Sept    Oct    Nov    Dec
               -----  -----  -----  -----  -----  -----  -----  -----  -----  -----  -----  -----
    PWEC                                                 1,700  1,700  1,700
    PPL                                                    112    112    112
    Panda                                                                       450    225    225

                                                      MWHs
               ----------------------------------------------------------------------------------
                                                      2004
               ----------------------------------------------------------------------------------
                Jan    Feb    Mar    Apr    May    Jun    Jul    Aug   Sept    Oct    Nov    Dec
               -----  -----  -----  -----  -----  -----  -----  -----  -----  -----  -----  -----
    PWEC                                          1,700  1,700  1,700  1,700
    PPL                                             150    150    150    150
    Panda        225    225    225    225    450                                450    225    225

                                                      MWHs
               ----------------------------------------------------------------------------------
                                                      2005
               ----------------------------------------------------------------------------------
                Jan    Feb    Mar    Apr    May    Jun    Jul    Aug   Sept    Oct    Nov    Dec
               -----  -----  -----  -----  -----  -----  -----  -----  -----  -----  -----  -----
    PWEC                                          1,700  1,700  1,700  1,700
    PPL                                             150    150    150    150
    Panda        225    225    225    225    450

                                                      MWHs
               ----------------------------------------------------------------------------------
                                                      2006
               ----------------------------------------------------------------------------------
                Jan    Feb    Mar    Apr    May    Jun    Jul    Aug   Sept    Oct    Nov    Dec
               -----  -----  -----  -----  -----  -----  -----  -----  -----  -----  -----  -----
    PWEC                                          1,700  1,700  1,700  1,700
    PPL
    Panda

                                                                                  15

                           NAVIGATING THE REGULATORY LANDSCAPE
                             PROPOSED ADJUSTMENT MECHANISMS

    Returning Customers

    Power Supply

    Competitive Rules Compliance

    System Benefit

    *    To allow timely recovery of certain costs

    *    To be implemented through rate case decision

                                                                                  16

                           NAVIGATING THE REGULATORY LANDSCAPE
                       2003 GENERAL RATE CASE OBJECTIVES & TIMING

    *    Rate recognition of Pinnacle West Energy Arizona assets

    *    "Recovery" issues

         -    $234M write off in 1999

         -    Costs for restructuring

    *    Adjustment mechanisms implementation

    *    Cost of service, cost allocation, and rate design issues

    *    Required to file by June 30, 2003

    *    Expect decision in 2004
                                                                                  17

                           NAVIGATING THE REGULATORY LANDSCAPE
                                      FERC ISSUES

    *    Gas pipeline contracts

    *    California refund process

    *    California and the Pacific Northwest bilateral power contracts

    *    California "market manipulation" investigation+ and implications

    ----------
    +    PNW/APS not named
                                                                                  18

                                   WE ARE & Will Be...

    A vertically integrated utility in a high growth market area...

    Sustaining exceptional operational performance...

    Successfully managing risk in varying market conditions...

    While remaining adept and agile in a dynamic regulatory environment.
                                                                                  19

    Focusing on the core business...

    Maximizing the value of non-utility operations...

    Maintaining financial strength and agility during regulatory transition...

    Building long-term value for shareholders and customers...
                                                                                  20

                              FOCUSING ON THE CORE BUSINESS
                       CONSOLIDATED EARNINGS DRIVERS 2003 VS. 2002

    *    Retail customer sales growth (RNF)           $40 - 45M

    *    SunCor                                             20M

    *    Cost reductions                                    18M

    *    Regulatory asset amortization                      17M

    *    EITF 02-3 accrual effects                          10M

    *    Higher gas and power costs                   (50 - 60M)

    *    Pension & other related costs                     (17M)

    *    Rate decrease                                     (16M)

    *    Depreciation on regulated assets                   (8M)

    * Estimated (after-tax effects)

                                                                                  21

                              FOCUSING ON THE CORE BUSINESS
                       CONSOLIDATED EARNINGS DRIVERS 2003 VS. 2002

    *    Surplus generation                                   +

    *    New generation plant fixed costs                     -

    *    APS Energy Services                                  -

    *    Marketing & trading                                +/-

    *    Weather, inflation, and all other                  +/-

    2002 Non-recurring items

    *    Accounting change                                  65M

    *    NAC                                                35M

    *    Cancellation of Redhawk 3 & 4                      30M

    *    Voluntary severance                                22M

    * Estimated (after-tax effects)

                                                                                  22

                        MAINTAINING FINANCIAL STRENGTH & AGILITY
                           PARENT COMPANY DEBT REPAYMENT PLANS

                                       Sources
    2003

    *    $500M inter-company loan to APS

    *    $80-$100M SunCor asset sales

    2004

    *    $80 - $100M SunCor asset sales

    *    $100M Southern Nevada Water Authority

    *    Short-term borrowings and $390M shelf capacity, as needed

                                          Uses
    2003

    *    $225M bridge debt, 7/30

    *    $250M floating rate notes, 8/1

    *    $25M private placement, 12/17

    2004

    *    $215M senior notes, 2/9

                                                                                  23

                         BALANCING FINANCIAL STRENGTH & GROWTH

                                CONSOLIDATED DEBT RATIO*

                                   2005 Target of 50%

                                  2001   2002   2005
                                  ----   ----   ----
                                   59%   57.7%    50%

    * Includes Palo Verde sale/leaseback

                                  CAPITAL EXPENDITURES
    $ millions

                             2001     2002     2003     2004    2005
                             ----     ----     ----     ----    ----
    Delivery                 354      369      273      275     329
    APS Generation           117      132      123       99     164
    PWEC Generation          533      374      268       31      20
    Other                     45      109       86       41      39

                                                                                  24

                             MAINTAINING CASH FLOW STRENGTH
                                 CASH INTEREST COVERAGE

                                      PINNACLE WEST

                                1999   2000   2001   2002
                                ----   ----   ----   ----
                                5.01   5.16   5.02   5.31

                                          APS

                                1999   2000   2001   2002
                                ----   ----   ----   ----
                                5.23   5.68   5.96   6.92

                                                                                  25

                          CREATING LONG-TERM SHAREHOLDER VALUE
                             TOP DIVIDEND GROWTH 1998 - 2002

                                                                     5 yr CAGR
                                                                     ---------
    Pinnacle West Capital                                              7.20%
    Energy East Corporation                                            6.50%
    PP&L Resources, Inc.                                               5.30%
    Vectren Corporation                                                4.40%
    FPL Group, Inc.                                                    3.90%
    NiSource Inc.                                                      3.90%
    TECO Energy, Inc.                                                  3.80%
    Pub. Svc. Enterprise Group                                         2.90%
    NSTAR                                                              2.80%
    Cleco Corporation                                                  2.60%
    WPS Resources Corp.                                                2.00%
    Allete                                                             1.50%
    Consolidated Edison Co of NY                                       1.10%
    Southern Company                                                   1.10%
    DPL Incorporated                                                   0.70%
    Great Plains Energy                                                0.50%
    Hawaiian Electric Indus                                            0.30%
    CH Energy Group                                                    0.20%
    Ameren Corporation                                                 0.00%
    American Electric Power                                            0.00%
    Cinergy Corporation                                                0.00%
    Dominion Resources                                                 0.00%
    DTE Energy                                                         0.00%
    Duke Energy                                                        0.00%
    FirstEnergy Corporation                                            0.00%
    Idacorp                                                            0.00%
    KeySpan Energy                                                     0.00%
    OGE Energy                                                         0.00%
    Public Svc. Of New Mexico                                          0.00%
    Unisource                                                          0.00%
    Exelon Corp.                                                      -0.40%
    Progress Energy, Inc.                                             -2.90%
    SCANA Corporation                                                 -3.00%
    Entergy Corporation                                               -4.90%
    DQE Incorporated                                                  -7.00%
    Sempra Energy                                                     -8.50%
    Pepco Holdings, Inc.                                              -9.60%
    CMS Energy                                                        -9.70%
    Constellation Energy Group                                       -10.20%
    Westar Energy                                                    -10.60%
    Puget Sound Power & Light                                        -11.50%
    Xcel Energy                                                      -11.90%
    Wisconsin Energy Corp.                                           -12.30%
    Alliant Energy                                                   -12.90%
    Centerpoint Energy                                               -16.00%
    Avista Corporation                                               -17.30%
    TXU Corp.                                                        -25.60%

                                                                                  26

                          CREATING LONG-TERM SHAREHOLDER VALUE
                    TOP QUARTILE EPS AND DIVIDEND GROWTH 1998 - 2002

    Dividend Growth     EPS Growth
    ---------------     ----------
          7.20%           6.10%       Pinnacle West Capital
          1.50%          -7.40%       Allete
        -12.90%          -7.60%       Alliant Energy
          0.00%           1.30%       Ameren Corporation
          0.00%          -1.60%       American Electric Power
        -17.30%         -14.50%       Avista Corporation
        -16.00%          -6.80%       Centerpoint Energy
          0.20%          -2.60%       CH Energy Group
          0.00%           3.10%       Cinergy Corporation
          2.60%          -8.10%       Cleco Corporation
          1.10%           1.20%       Consolidated Edison Co of NY
        -10.20%           2.00%       Constellation Energy Group
          0.00%          10.00%       Dominion Resources
          0.70%          -9.70%       DPL Incorporated
         -7.00%         -13.10%       DQE Incorporated
          0.00%           6.40%       DTE Energy
          0.00%          -7.60%       Duke Energy
          6.50%          -9.10%       Energy East Corporation
         -4.90%          11.50%       Entergy Corporation
         -0.40%          21.60%       Exelon Corp.
          0.00%           6.40%       FirstEnergy Corporation
          3.90%           6.10%       FPL Group, Inc.
          0.50%           4.60%       Great Plains Energy
          0.30%           1.50%       Hawaiian Electric Indus.
          0.00%          -6.80%       Idacorp
          0.00%           3.50%       KeySpan Energy
          3.90%           5.90%       NiSource Inc.
          2.80%           4.00%       NSTAR
          0.00%          -0.90%       OGE Energy
         -9.60%           0.90%       Pepco Holdings, Inc.
          5.30%          12.10%       PP&L Resources, Inc.
         -2.90%           7.60%       Progress Energy, Inc.
          2.90%           7.00%       Pub. Svc. Enterprise Group
          0.00%          -3.00%       Public Svc. Of New Mexico
        -11.50%          -4.40%       Puget Sound Power & Light
         -3.00%           4.60%       SCANA Corporation
         -8.50%           7.90%       Sempra Energy
          1.10%           2.30%       Southern Company
          3.80%           3.30%       TECO Energy, Inc.
        -25.60%          -6.50%       TXU Corp.
          0.00%          -0.10%       UIL Holdings
          4.40%          -2.80%       Vectren Corporation
        -12.30%          17.60%       Wisconsin Energy Corp.
          2.00%           5.90%       WPS Resources Corp.
        -11.90%          -4.10%       Xcel Energy

    Source: Regulatory Research Associates

                                                                                  27

                          SHAPING ISSUES AFFECTING OUR INDUSTRY

    *    Industry risk

    *    Cyclical nature of the industry

    *    Public power

    *    Distinct, independent markets

    *    Customer responsibility and community relations

    *    Arizona regulatory and political perspectives

    *    Federal legislative and regulatory issues

    *    Governance and investor confidence
                                                                                  28

    "We'll continue to concentrate primarily on our core business in an area our
    employees know well -- Arizona and the western U.S. power markets -- with a
    combination of customer focus, exceptional operational performance and financial
    strength."

                                                 -- Pinnacle West 2002 Annual Report
                                                    Letter to Shareholders

                                                                                  29

    [PHOTO]

                                                                                  30