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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549

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                                    FORM T-1

                            STATEMENT OF ELIGIBILITY
                    UNDER THE TRUST INDENTURE ACT OF 1939 OF
                   A CORPORATION DESIGNATED TO ACT AS TRUSTEE

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               CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF
                A TRUSTEE PURSUANT TO SECTION 305(b)(2) ________

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                            THE CHASE MANHATTAN BANK
               (Exact name of trustee as specified in its charter)

NEW YORK                                                13-4994650
(State of incorporation                                 (I.R.S. employer
if not a national bank)                                 identification No.)

270 PARK AVENUE
NEW YORK, NEW YORK                                      10017
(Address of principal executive offices)                (Zip Code)

                               William H. McDavid
                                 General Counsel
                                 270 Park Avenue
                            New York, New York 10017
                               Tel: (212) 270-2611
            (Name, address and telephone number of agent for service)

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

ARIZONA                                                 86-0011170
(State or other jurisdiction of                         (I.R.S. employer
incorporation or organization)                          identification No.)

400 NORTH FIFTH STREET
PHOENIX, ARIZONA 85004                                  85005
(Address of principal executive offices)                (Zip Code)

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                                 DEBT SECURITIES
                       (Title of the indenture securities)
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                                     GENERAL

ITEM 1. GENERAL INFORMATION.

     Furnish the following information as to the trustee:

     (a) Name and address of each examining or supervising authority to which it
is subject.

     New York State Banking Department, State House, Albany, New York 12110.

     Board of Governors of the Federal Reserve System, Washington, D.C., 20551

     Federal Reserve Bank of New York,  District No. 2, 33 Liberty  Street,  New
York, N.Y.

     Federal Deposit Insurance Corporation, Washington, D.C., 20429.

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

     Yes.

ITEM 2. AFFILIATIONS WITH THE OBLIGOR.

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

     None.

                                      - 2 -

ITEM 16. LIST OF EXHIBITS

     List below all exhibits filed as a part of this Statement of Eligibility.

     1. A copy of the Articles of  Association  of the Trustee as now in effect,
including the  Organization  Certificate and the Certificates of Amendment dated
February 17,  1969,  August 31,  1977,  December  31,  1980,  September 9, 1982,
February 28, 1985, December 2, 1991 and July 10, 1996 (see Exhibit 1 to Form T-1
filed  in  connection  with  Registration  Statement  No.  333-06249,  which  is
incorporated by reference).

     2. A copy of the  Certificate  of  Authority  of the  Trustee  to  Commence
Business  (see  Exhibit  2 to Form T-1  filed in  connection  with  Registration
Statement No. 33-50010, which is incorporated by reference. On July 14, 1996, in
connection  with the  merger  of  Chemical  Bank and The  Chase  Manhattan  Bank
(National  Association),  Chemical Bank, the surviving corporation,  was renamed
The Chase Manhattan Bank).

     3. None,  authorization to exercise  corporate trust powers being contained
in the documents identified above as Exhibits 1 and 2.

     4. A copy of the existing By-Laws of the Trustee (see Exhibit 4 to Form T-1
filed  in  connection  with  Registration  Statement  No.  333-76439,  which  is
incorporated by reference).

     5. Not applicable.

     6. The  consent of the Trustee  required by Section  321(b) of the Act (see
Exhibit  6 to Form T-1  filed in  connection  with  Registration  Statement  No.
33-50010,  which is incorporated  by reference.  On July 14, 1996, in connection
with  the  merger  of  Chemical  Bank and The  Chase  Manhattan  Bank  (National
Association),  Chemical Bank, the surviving  corporation,  was renamed The Chase
Manhattan Bank).

     7. A copy of the  latest  report of  condition  of the  Trustee,  published
pursuant to law or the requirements of its supervising or examining authority.

     8. Not applicable.

     9. Not applicable.

                                   SIGNATURE

     Pursuant  to the  requirements  of the  Trust  Indenture  Act of  1939  the
Trustee,  The Chase Manhattan  Bank, a corporation  organized and existing under
the laws of the State of New York, has duly caused this statement of eligibility
to be signed on its behalf by the undersigned, thereunto duly authorized, all in
the City of New York and State of New York, on the 20TH day of DECEMBER, 1999.

                                        THE CHASE MANHATTAN BANK

                                         By T. J. Foley
                                            -------------------------
                                            T.J. Foley
                                            Vice President

                                      - 3 -

                              Exhibit 7 to Form T-1


                                Bank Call Notice

                             RESERVE DISTRICT NO. 2
                       CONSOLIDATED REPORT OF CONDITION OF

                            The Chase Manhattan Bank
                  of 270 Park Avenue, New York, New York 10017
                     and Foreign and Domestic Subsidiaries,
                     a member of the Federal Reserve System,

                     at the close of business September 30,
               1999, in accordance with a call made by the Federal
                  Reserve Bank of this District pursuant to the
                     provisions of the Federal Reserve Act.


                                                                  Dollar Amounts
ASSETS                                                              In Millions

Cash and balances due from depository institutions:
     Noninterest-bearing balances and currency and coin .........     $  13,497
     Interest-bearing balances ..................................         6,388
Securities:
Held to maturity securities .....................................           798
Available for sale securities ...................................        48,655
Federal funds sold and securities purchased under
     agreements to resell .......................................        30,373
Loans and lease financing receivables:
     Loans and leases, net of unearned income ......... $ 132,392
     Less: Allowance for loan and lease losses ........     2,463
     Less: Allocated transfer risk reserve ............         0
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     Loans and leases, net of unearned income,
     allowance, and reserve .....................................       129,929
Trading Assets ..................................................        47,413
Premises and fixed assets (including capitalized leases) ........         3,287
Other real estate owned .........................................            26
Investments in unconsolidated subsidiaries and
     associated companies .......................................           185
Customers' liability to this bank on acceptances
     outstanding ................................................           716
Intangible assets ...............................................         2,693
Other assets ....................................................        15,430
                                                                      ---------
TOTAL ASSETS ....................................................     $ 299,390
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                                   LIABILITIES

Deposits
     In domestic offices ........................................     $ 100,324
     Noninterest-bearing .............................. $  41,601
     Interest-bearing .................................    58,723
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     In foreign offices, Edge and Agreement
     subsidiaries and IBF's .....................................        88,064
Noninterest-bearing ................................... $   6,363
     Interest-bearing .................................    81,701

Federal funds purchased and securities sold under
  agreements to repurchase ......................................        35,773
Demand notes issued to the U.S. Treasury ........................           892
Trading liabilities .............................................        33,565
Other borrowed money (includes mortgage indebtedness
     and obligations under capitalized leases):
     With a remaining maturity of one year or less ..............         4,434
       With a remaining maturity of more than one year
            through three years .................................            14
       With a remaining maturity of more than three years .......            97
Bank's liability on acceptances executed and outstanding ........           716
Subordinated notes and debentures ...............................         5,429
Other liabilities ...............................................        11,457

TOTAL LIABILITIES ...............................................       280,765
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                                 EQUITY CAPITAL

Perpetual preferred stock and related surplus ...................             0
Common stock ....................................................         1,211
Surplus (exclude all surplus related to preferred stock) ........        11,016
Undivided profits and capital reserves ..........................         7,333
Net unrealized holding gains (losses)
on available-for-sale securities ................................          (951)
Accumulated net gains (losses) on cash flow hedges ..............             0
Cumulative foreign currency translation adjustments .............            16
TOTAL EQUITY CAPITAL ............................................        18,625
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TOTAL LIABILITIES AND EQUITY CAPITAL ............................     $ 299,390
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     I, Joseph L.  Sclafani,  E.V.P.  & Controller of the  above-named  bank, do
hereby  declare that this Report of Condition has been  prepared in  conformance
with the instructions issued by the appropriate Federal regulatory authority and
is true to the best of my knowledge and belief.

                                         JOSEPH L. SCLAFANI

     We, the undersigned directors,  attest to the correctness of this Report of
Condition  and declare  that it has been  examined by us, and to the best of our
knowledge  and belief has been  prepared in  conformance  with the  instructions
issued by the appropriate Federal regulatory authority and is true and correct.

                                         WALTER V. SHIPLEY         )
                                         WILLIAM B. HARRISON, JR.  )  DIRECTORS
                                         SUSAN V. BERRESFORD       )

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