Exhibit 1.3

                                  $175,000,000

                         ARIZONA PUBLIC SERVICE COMPANY

                                Medium-Term Notes
                                -----------------



                             DISTRIBUTION AGREEMENT
                             ----------------------
                               (For Senior Notes)


                                                               November 19, 1996








Ladies and Gentlemen:

                  1.  Introduction.  Arizona Public Service Company,  an Arizona
corporation   (the   "Company"),   confirms  its  agreement  with  each  of  you
(individually,  a  "Distributor"  and  collectively,  the  "Distributors")  with
respect  to the  issue  and  sale  from  time  to  time  by the  Company  of its
medium-term  notes registered under the registration  statements  referred to in
Section  2(a)  and  described  in  the  combined  prospectus  relating  to  such
registration  statements  as "Senior  Notes" (any such  medium-term  notes being
hereinafter  referred to as the  "Securities,"  which  expression  shall, if the
context so admits,  include any permanent  global  Security).  Securities may be
offered and sold pursuant to Section 3 of this Agreement in an aggregate  amount
not to exceed the amount of  Registered  Securities  (as defined in Section 2(a)
hereof)  registered  pursuant  to such  registration  statements  reduced by the
aggregate amount of any other Registered Securities sold otherwise than pursuant
to  Section  3 of this  Agreement.  The  Securities  will  be  issued  under  an
Indenture,  dated as of November 15, 1996 (the "Basic  Indenture"),  between the
Company and The Bank of New York, as trustee (the "Trustee"), as the same may be
amended  by one or  more  additional  Supplemental  Indentures  relating  to the
Securities (each a "Supplemental Indenture," and collectively, the "Supplemental
Indentures")  (the  Basic  Indenture,   as  amended  and  supplemented  by  such
Supplemental Indentures, is hereinafter referred to as the "Indenture"). Subject
to Article 14 of the Basic  Indenture,  prior to the Release Date (as defined in
the Basic  Indenture),  the  Securities  will be secured by the Company's  first
mortgage  bonds (the  "Senior  Note  Mortgage  Bonds")  issued  pursuant  to the
Mortgage and Deed of Trust dated as of July 1, 1946, to The Bank of New York, as
successor  Trustee,  as  amended  and  supplemented  by  fifty-three  

indentures  supplemental thereto (the "Basic Mortgage"),  and as further amended
and  supplemented by one or more  additional  supplemental  indentures  relating
thereto  (each  a  "Mortgage  Supplemental  Indenture"  and  collectively,   the
"Mortgage   Supplemental   Indentures")  (the  Basic  Mortgage  as  amended  and
supplemented by such Mortgage Supplemental  Indentures,  is hereinafter referred
to as the "Mortgage").

                  The  Securities   shall  have  the  terms   described  in  the
Prospectus referred to in Section 2(a) as it may be amended or supplemented from
time to time,  including any supplement to the  Prospectus  that sets forth only
the terms of a  particular  issue of the  Securities  (a "Pricing  Supplement").
Securities will be issued, and the terms thereof established,  from time to time
by the Company in accordance  with the Indenture and the  Procedures (as defined
in Section 3(d) hereof).

                  2.  Representations and Warranties of the Company. The Company
represents and warrants to, and agrees with, each Distributor as follows:

                  (a)  A  registration  statement  (No.  33-55473)  relating  to
         $25,000,000  of the  Company's  first  mortgage  bonds (the "Bonds") or
         unsecured  debentures,  notes or other evidences of  indebtedness  (the
         "Unsecured  Securities"),   a  registration  statement  (No.  33-64455)
         relating  to   $25,000,000   of  Bonds  or  Unsecured   Securities,   a
         registration  statement  (No.  33-61228)  relating to  $100,000,000  of
         Bonds,  and  a  registration  statement  (No.  333-15379)  relating  to
         $25,000,000 of Bonds,  Unsecured  Securities,  or Securities (together,
         the "Registered  Securities") (including a combined prospectus relating
         to up to  $175,000,000 of Bonds,  Unsecured  Securities or Securities),
         were  filed  with  the   Securities   and  Exchange   Commission   (the
         "Commission") and have become effective.  Such registration statements,
         as each is amended as of the Closing  Date (as defined in Section  3(e)
         hereof),  are  hereinafter  referred  to  as  the  "First  Registration
         Statement,"   the   "Second   Registration   Statement,"   the   "Third
         Registration  Statement,"  and  the  "Fourth  Registration  Statement,"
         respectively,  and, together with any related Rule 462(b)  registration
         statement   or  amendment   thereto,   are   hereinafter   referred  to
         collectively as the "Registration  Statements," and such prospectus, as
         amended  or as  supplemented  as of the  Closing  Date,  including  all
         material  incorporated by reference therein, is hereinafter referred to
         as the  "Prospectus."  Any  reference in this  Agreement to amending or
         supplementing  the Prospectus  shall be deemed to include the filing of
         materials incorporated by reference in the Prospectus after the Closing
         Date and any reference in this Agreement to any amendment or supplement
         to the  Prospectus  shall be  deemed  to  include  any  such  materials
         incorporated by reference in the Prospectus after the Closing Date.

                  (b) Each part of the Registration  Statements,  when such part
         became   effective,   conformed  in  all   material   respects  to  the
         requirements  of the  Securities  Act of 1933  (the  "Act"),  the Trust
         Indenture Act of 1939 (the "Trust  Indenture  Act"),  and the rules and
         regulations (the "Rules and Regulations") of the Commission and did not
         include any untrue  statement  of a material  fact or omit to state any
         material  fact  required to be stated  therein or necessary to make the
         statements therein not misleading,  and on the Closing Date and at each
         of the 
                                       2

         times of acceptance and of delivery  referred to in Section 6(a) hereof
         and at each of the times of amendment or  supplementing  referred to in
         Section  6(b) hereof (the  Closing Date and each such time being herein
         sometimes  referred to as a  "Representation  Date"),  the Registration
         Statements and the Prospectus will conform in all material  respects to
         the requirements of the Act, the Trust Indenture Act, and the Rules and
         Regulations,  and at such date none of such  documents will include any
         untrue  statement of a material fact or omit to state any material fact
         required  to be stated  therein  or  necessary  to make the  statements
         therein not misleading;  provided, however, that the foregoing does not
         apply to (a) statements in or omissions  from any such documents  based
         upon written  information  furnished to the Company by any  Distributor
         specifically   for  use   therein  or  (b)  that  part  of  the  Fourth
         Registration  Statement  that consists of the Statement of  Eligibility
         and  Qualification  (Form T-1) under the Trust Indenture Act of 1939 of
         The Bank of New York, as Trustee under the Basic Indenture.

                  (c) An order of the Arizona Corporation  Commission shall have
         been  granted  authorizing  (i)  the  execution  and  delivery  of  the
         Supplemental  Indenture relating to any series of Securities issued and
         sold by the Company  hereunder,  (ii) the execution and delivery of the
         Mortgage  Supplemental  Indenture,  pursuant  to which the Senior  Note
         Mortgage Bonds securing such Securities  will be issued,  and (iii) the
         issuance and sale of such Securities on the terms and conditions herein
         and in the Prospectus or in any Terms  Agreement (as defined in Section
         3(b))  relating to such  Securities,  and the approval or consent of no
         other  public body or  authority  is  necessary  to the  execution  and
         delivery  of  such  Supplemental  Indenture  or  Mortgage  Supplemental
         Indenture or the validity of the issuance and sale of such  Securities,
         except as may be required under state securities or blue sky laws.

                  (d) The Company holds such valid  franchises,  certificates of
         convenience and necessity,  licenses, and permits as are necessary with
         respect to the  maintenance  and operation of its property and business
         as now  conducted,  except that (A) the Company from time to time makes
         minor  extensions of its system prior to the time a related  franchise,
         certificate,  license,  or  permit is  procured,  (B) from time to time
         communities already being served by the Company become incorporated and
         considerable  time may  elapse  before a  franchise  is  procured,  (C)
         certain franchises may have expired prior to the renegotiation thereof,
         (D) the  Company may not have  obtained  certain  permits or  variances
         relating to the environmental requirements described in any of its Form
         10-K  Report,  its Form  10-Q  Reports,  and/or  its  Form 8-K  Reports
         incorporated by reference in the Registration  Statements,  (E) certain
         minor defects and exceptions may exist which,  individually  and in the
         aggregate,  are not deemed material,  and (F) the Company does not make
         any  representation  regarding the geographical scope of any franchise,
         certificate,  license,  or  permit  that  is  not  specific  as to  its
         geographical scope.

                  (e) The Company has been duly  incorporated and is an existing
         corporation  in good  standing  under the laws of the State of Arizona,
         with power and authority  (corporate  and other) to own its  properties
         and  conduct its  business  as  described  in the  Prospectus;  and the
         Company is duly  qualified to do business as a foreign  corporation  in
         good  standing in all other  jurisdictions  in which its  ownership  or
         lease  of  property  or the  conduct  of  its  business  requires  such
         qualification.
                                       3

                  (f) Except for property specifically excepted from the lien of
         the  Mortgage  or  released  therefrom  in  accordance  with the  terms
         thereof,  the  Company  has good and  marketable  title in fee  simple,
         except for items  described in (A),  (B), and (C) below,  to all of the
         real property  purported in the Mortgage to be so held,  good and valid
         leasehold  interests in all properties  purported in the Mortgage to be
         held  under  lease,  and good and valid  title to all other  properties
         described  in the  Mortgage  as  subject  to the  lien  thereof  (which
         property excludes (i) the combined cycle plant referred to in Note 8 of
         Notes to Financial Statements in the Company's Form 10-K Report for the
         fiscal  year ended  December  31,  1995 (the  "1995 Form 10-K  Report")
         incorporated by reference in the  Registration  Statements but includes
         the Company's  leasehold  and related  interests in that plant and (ii)
         certain leased interests in Unit 2 of the Palo Verde Nuclear Generating
         Station  referred to in Note 7 of Notes to Financial  Statements in the
         1995 Form 10-K Report),  except that the  transmission and distribution
         lines of the Company,  other than those located on land owned in fee by
         the Company,  and the property described in Section 15 of Article IV of
         the Forty-first Mortgage Supplemental Indenture, have been installed in
         public streets or alleys and in highways  under  ordinances and permits
         granted by the various governmental bodies having jurisdiction, or have
         been  constructed on leaseholds,  easements or  rights-of-way  granted,
         with minor exceptions, by the apparent owners of record of the land and
         such leases,  easements, or rights-of-way are subject to any defects in
         or encumbrances  on the title of the respective  lessors of such leases
         or grantors of such easements or rights-of-way;  title to the aforesaid
         properties  is  subject  only  to:  (A) the lien of the  Mortgage,  (B)
         Excepted Encumbrances as defined in the Mortgage,  and (C) other liens,
         encumbrances  or  defects,  none  of  which,  individually  or  in  the
         aggregate,  materially interfere with the business or operations of the
         Company (with respect to leasehold interests on the Navajo Reservation,
         this  representation  is intended and shall be  understood to mean only
         that the  Company is the owner of the rights  conferred  upon it by the
         leases from the Navajo Tribe  relating to the sites on which the Navajo
         Plant  and the Four  Corners  Plant  are  located,  and that  while the
         Company  is not  aware of the  assertion  of any claim  contesting  the
         interest of the Navajo Tribe in the lands leased,  the Company does not
         give any  representation  with  respect to the  interest  of the Navajo
         Tribe in the lands leased or with respect to the enforceability of such
         leases against the Navajo Tribe);  the Mortgage,  subject only as above
         set forth in this  clause,  now  constitutes,  and the Mortgage and the
         Mortgage Supplemental Indentures theretofore executed,  subject only as
         above set forth in this  clause,  when the latter  shall have been duly
         recorded  and  filed,  will  constitute,   together  and  as  a  single
         instrument,   a  direct  and  valid  first   mortgage  lien  upon  said
         properties,  which include all of the  properties of the Company (other
         than the  classes  or  items  of  property  expressly  excepted  in the
         Mortgage);  and all  properties  (other  than the  classes  or items of
         property  expressly excepted in the Mortgage or expressly released from
         the  lien  thereof)  acquired  by the  Company  after  the date of this
         opinion in each county in the States of Arizona and New Mexico in which
         the Mortgage and the Mortgage  Supplemental  Indentures shall have been
         duly recorded and filed (and, as to which  properties,  with respect to
         priority  only,  any  necessary  recordation  and/or  filing  has  been
         accomplished,   including   therein  any  necessary   descriptions   of
         after-acquired   real   property   and   real   property   upon   which
         after-acquired  fixtures  are  affixed)  will,  upon such  acquisition,
         become subject to the first mortgage lien thereof, subject, however, to
         Excepted  Encumbrances and to liens, if any, existing or placed thereon
         at the time of the acquisition thereof by the Company and, with respect
         to priority only, to liens,  if any,  existing prior to the time of any
                                       4

         necessary recordation and/or filing by the Company.

                  3.  Appointment as  Distributors;  Agreement of  Distributors;
         Solicitations.

                  (a) Subject to the terms and  conditions  stated  herein,  the
         Company  hereby  appoints each of the  Distributors  as an agent of the
         Company for the purpose of soliciting  or receiving  offers to purchase
         the  Securities  from the Company by others during any Marketing  Time.
         For purposes of this  Agreement,  "Marketing  Time" shall mean any time
         when no suspension  of  solicitation  of offers to purchase  Securities
         pursuant  to Section  3(b) or  Section  4(b) shall be in effect and any
         time when  either any  Distributor  shall own any  Securities  with the
         intention  of  reselling  them or the Company has  accepted an offer to
         purchase Securities but the related settlement has not occurred.

                  So long as this Agreement  shall remain in effect with respect
         to any  Distributor,  the Company shall not, without the consent of any
         such  Distributor,  solicit or accept  offers to purchase  newly-issued
         Securities  from  the  Company   otherwise  than  through  one  of  the
         Distributors;  provided, however, that, subject to all of the terms and
         conditions of this  Agreement,  the foregoing shall not be construed to
         prevent the Company from selling at any time any Registered  Securities
         in a firm commitment underwriting pursuant to an underwriting agreement
         that does not provide  for a  continuous  offering  of such  Registered
         Securities; and provided,  further, that the Company reserves the right
         from time to time (i) to purchase or sell  Securities  directly from or
         to an  investor,  and (ii) to  accept  a  specific  offer  to  purchase
         newly-issued  Securities  from the Company  solicited by a dealer other
         than the Distributors  (each an "Other Dealer"),  without obtaining the
         prior  consent of any of  Distributors,  provided that any Other Dealer
         shall agree to be bound by and subject to the terms and  conditions  of
         this Agreement  binding on the  Distributors  (including the commission
         schedule set forth on Exhibit B). Each  Distributor  is  authorized  to
         engage the  services of any other broker or dealer in  connection  with
         the  offer  or sale of  Securities  purchased  by such  Distributor  as
         principal  for  resale to  others  and may  reallow  a  portion  of the
         commission,   but  such   Distributor  is  not  authorized  to  appoint
         sub-agents.

                  (b)  On  the  basis  of  the  representations  and  warranties
         contained  herein,  but subject to the terms and conditions  herein set
         forth,  each  Distributor  agrees,  as an agent of the Company,  to use
         reasonable best efforts when requested by the Company to solicit offers
         to purchase the  Securities  upon the terms and conditions set forth in
         the  Prospectus,  as from  time to time  amended  or  supplemented.  No
         Distributor shall have any responsibility for maintaining  records with
         respect  to the  aggregate  principal  amount of  Securities  sold,  or
         otherwise  monitoring the availability of Securities for sale under the
         Registration Statements. In connection therewith, each Distributor will
         use the  Prospectus (as amended or  supplemented  from time to time) in
         the form most recently furnished to such Distributor by the Company and
         will solicit offers to purchase the  Securities in accordance  with the
         Act, the Rules and Regulations,  and the applicable  securities laws or
         regulations  of  any  other  applicable   jurisdiction  in  which  such
         Distributor solicits offers to purchase any Securities.  In placing any
         Securities   pursuant  to  an  offer  accepted  by  the  Company,   the
         Distributor  that  solicited  or received  such offer (the  "Presenting
         Distributor")  may act as agent or 
                                       5

         purchase such Securities from the Company as principal for resale. Upon
         acceptance by the Company of an offer by the Presenting  Distributor to
         purchase  Securities  as  principal,  the  Presenting  Distributor  may
         complete  a Terms  Agreement  substantially  in the form of  Exhibit  A
         hereto (a "Terms Agreement") and transmit the completed Terms Agreement
         to the  Company  by hand or by  facsimile  or  other  similar  means of
         telecommunication.  Upon  acceptance  by the  Company  of an  offer  to
         purchase Securities,  unless the Company and the Presenting Distributor
         otherwise  agree in  writing,  any such  Terms  Agreement  or any other
         written  confirmation  or  communication  transmitted by the Presenting
         Distributor  to the Company or, in the absence of a Terms  Agreement or
         other  written   confirmation  or  communication  from  the  Presenting
         Distributor,  the  oral  agreement  with  respect  to the  terms of the
         Securities  and  of  their  offer  and  sale  evidenced  by  the  offer
         communicated by the Presenting Distributor and accepted by the Company,
         in each case together  with the  provisions  of this  Agreement,  shall
         constitute  an agreement  between the  Presenting  Distributor  and the
         Company for the sale and  purchase of such  Securities  (whether or not
         any Terms  Agreement or other  written  confirmation  or  communication
         shall have been executed by the Company or the Presenting Distributor).

                  Upon  receipt of notice  from the Company as  contemplated  by
         Section 4(b) hereof, each Distributor shall suspend its solicitation of
         offers to purchase Securities until such time as the Company shall have
         furnished  it with  an  amendment  or  supplement  to the  Registration
         Statements  or the  Prospectus,  as the  case may be,  contemplated  by
         Section  4(b)  and  shall  have  advised  such  Distributor  that  such
         solicitation may be resumed.

                  The Company  reserves the right,  in its sole  discretion,  to
         suspend solicitation of offers to purchase the Securities commencing at
         any time for any  period of time or  permanently.  Upon  receipt  of at
         least  one  Business   Day's  prior   notice  from  the  Company,   the
         Distributors will forthwith suspend  solicitation of offers to purchase
         Securities  from the Company until such time as the Company has advised
         the Distributors that such solicitation may be resumed. For the purpose
         of the foregoing  sentence,  "Business  Day" shall mean any day that is
         not a Saturday or Sunday,  and that in The City of New York or Phoenix,
         Arizona  is not a day  on  which  banking  institutions  generally  are
         authorized or obligated by law or executive order to close.

                  The  Distributors are authorized to solicit offers to purchase
         Securities as described in the Prospectus,  as amended or supplemented,
         and only in a minimum  aggregate  amount of $1,000  (or the  equivalent
         thereof in one or more  currencies  or  currency  units other than U.S.
         dollars).  Each Distributor shall communicate to the Company, orally or
         in writing, each reasonable offer to purchase Securities received by it
         as agent.  The  Company  shall have the sole right to accept  offers to
         purchase the Securities  and may reject any such offer,  in whole or in
         part.  Each  Distributor  shall  have  the  right,  in  its  discretion
         reasonably  exercised,  without  notice to the  Company,  to reject any
         offer to purchase  Securities  received by it, in whole or in part, and
         any such  rejection  shall  not be  deemed a  breach  of its  agreement
         contained herein.
                                       6

                  In  connection  with the  solicitation  of offers to  purchase
         Securities,  the  Distributors  are not  authorized  to  provide to any
         person any written  information  relating to the Company other than the
         Prospectus  and the documents  incorporated  by reference  therein.  No
         Security  which  the  Company  has  agreed  to  sell  pursuant  to this
         Agreement  shall be deemed to have been purchased and paid for, or sold
         by the Company,  until such Security  shall have been  delivered to the
         purchaser thereof against payment by such purchaser.

                  (c)  At  the  time  of  delivery  of,  and  payment  for,  any
         Securities  sold by the Company as a result of a solicitation  made by,
         or offer to purchase  received by, a  Distributor,  acting on an agency
         basis,  the Company  agrees to pay such  Distributor  a  commission  in
         accordance with the schedule set forth in Exhibit B hereto. The Company
         agrees that each Distributor that purchases Securities as principal for
         resale shall  receive such  compensation,  in the form of a discount or
         otherwise,  as shall be  agreed to  between  such  Distributor  and the
         Company  at the time the  Company  accepts  an offer to  purchase  such
         Securities,  or, if no such  compensation is agreed to, a commission in
         accordance with Exhibit B hereto. Unless otherwise specified in a Terms
         Agreement,   a  Distributor   purchasing  Securities  may  resell  such
         Securities to other dealers on the terms set forth in, or determined as
         described in, the Prospectus  (including,  if  applicable,  the Pricing
         Supplement).

                  (d)   Administrative   procedures   respecting   the  sale  of
         Securities (the "Procedures") shall be agreed upon from time to time by
         the Distributors and the Company. The initial Procedures, which are set
         forth in  Exhibit C hereto,  shall  remain in effect  until  changed by
         agreement among the Company and the Distributors.  Each Distributor and
         the Company  agree to perform  the  respective  duties and  obligations
         specifically provided to be performed by each of them herein and in the
         Procedures.  The  Company  will  furnish  to the  Trustee a copy of the
         Procedures as from time to time in effect.

                  (e) The documents required to be delivered by Section 5 hereof
         shall be  delivered  at the  office of the  Company,  400  North  Fifth
         Street,  Phoenix,  Arizona  85004,  not later than 10:00 A.M.,  Arizona
         time,  on the date of this  Agreement  or at such  later time as may be
         mutually agreed by the Company and the Distributors,  which in no event
         shall  be  later  than the  time at  which  the  Distributors  commence
         solicitation of purchases of Securities  hereunder,  such time and date
         being herein called the "Closing Date".

                  4. Covenants of the Company.  In connection with each offering
of Securities, the Company covenants and agrees with the Distributors that:

                  (a) The Company will advise the  Distributors  promptly of any
         proposed   amendment  or  supplementation  of  the  First  Registration
         Statement,  the Second Registration  Statement,  the Third Registration
         Statement, the Fourth Registration Statement or the Prospectus and will
         afford the Distributors a reasonable opportunity to comment on any such
         proposed  amendment or  supplement  (other than any Pricing  Supplement
         that  relates  to  Securities   not   purchased   through  or  by  such
         Distributors).  The Company  will also advise the  
                                       7

         Distributors  of the  institution  by the  Commission of any stop order
         proceedings in respect of the First Registration Statement,  the Second
         Registration Statement,  the Third Registration  Statement,  the Fourth
         Registration  Statement,  or of any part thereof, and will use its best
         efforts to prevent the issuance of any such stop order and to obtain as
         soon as possible its lifting, if issued.

                  (b)  If,  at  any  time  when  a  prospectus  relating  to the
         Securities is required to be delivered  under the Act, any event occurs
         as a result of which the  Prospectus  as then  amended or  supplemented
         would include an untrue  statement of a material fact, or omit to state
         any material  fact  necessary to make the  statements  therein,  in the
         light of the circumstances  under which they were made, not misleading,
         or if it is  necessary  at any time to amend or  supplement  the  First
         Registration Statement,  the Second Registration  Statement,  the Third
         Registration  Statement,  the  Fourth  Registration  Statement  or  the
         Prospectus  to comply with the Act,  the Company  promptly  will notify
         each  Distributor  to suspend  solicitation  of offers to purchase  the
         Securities  and, if the Company shall decide to amend or supplement the
         Registration Statements or Prospectus, the Company will promptly advise
         each  Distributor  by  telephone  (with  confirmation  in writing)  and
         promptly  will  prepare and file with the  Commission  an  amendment or
         supplement that will correct such statement or omission or an amendment
         that will effect such compliance; provided, however, that if during the
         period referred to above any Distributor  shall own any Securities that
         it has  purchased  from the Company as principal  with the intention of
         reselling them and the  Distributor  has held such Securities for fewer
         than  90  days  or the  Company  has  accepted  an  offer  to  purchase
         Securities  but the related  settlement  has not occurred,  the Company
         promptly  will  prepare and file with the  Commission  an  amendment or
         supplement that will correct such statement or omission or an amendment
         that will effect such compliance.

                  (c) As soon as  practicable,  but not  later  than 18  months,
         after  the  date of each  acceptance  by the  Company  of an  offer  to
         purchase  Securities   hereunder,   the  Company  will  make  generally
         available to its security  holders an earning  statement or  statements
         (which  need not be  audited)  covering  a period of at least 12 months
         beginning after the effective date of the Fourth Registration Statement
         (as  defined in Rule  158(c)  under the Act),  which will  satisfy  the
         provisions  of Section  11(a) of the Act and the rules and  regulations
         thereunder.

                  (d) The Company will furnish to the  Distributors  such copies
         of the  Registration  Statements  (including  one  copy  of the  Fourth
         Registration  Statement for the  Distributors,  and for the counsel for
         the  Distributors,  which is signed and  includes  all  exhibits),  any
         related   preliminary   prospectus   supplements  and  the  Prospectus,
         including all amendments or supplements  to such  documents,  as may be
         reasonably requested.

                  (e) The Company will arrange or cooperate in arrangements  for
         the  qualification of the Securities for sale and the  determination of
         their  eligibility for investment under the laws of such  jurisdictions
         as the Distributors  designate and will continue such qualifications in
         effect so long as  required  for the  distribution  of the  Securities,
         provided that the Company shall not be required to qualify as a foreign
         corporation in any State, to consent to service of process in any
                                       8

         State other than with respect to claims  arising out of the offering or
         sale of the Securities,  or to meet other requirements  deemed by it to
         be unduly burdensome.

                  (f) For a period  expiring  on the  earlier  of (i) five years
         after  the  applicable  Representation  Date and (ii) the last  date on
         which any Security sold pursuant to this Agreement is outstanding,  the
         Company  will  furnish to the  Distributors  thereunder  (i) as soon as
         practicable  after the end of each  fiscal  year,  a balance  sheet and
         statements of income and retained earnings of the Company as at the end
         of and for  such  year,  all in  reasonable  detail  and  certified  by
         independent  public  accountants,  and (ii) (A) as soon as  practicable
         after the end of each  quarterly  fiscal  period  (except  for the last
         quarterly  fiscal  period of each  fiscal  year),  a balance  sheet and
         statement  of  income  of the  Company  as at the end of and  for  such
         period, all in reasonable detail and certified by a principal financial
         or accounting officer of the Company, (B) as soon as available,  a copy
         of each report of the Company mailed by the Company to  stockholders or
         filed  with the  Commission,  and (C) from  time to  time,  such  other
         information  concerning the Company as may reasonably be requested.  So
         long as the Company has active subsidiaries,  such financial statements
         will be on a  consolidated  basis to the  extent  the  accounts  of the
         Company and its subsidiaries are consolidated.

                  (g)  The  Company  will  pay  all  expenses  incident  to  the
         performance of its obligations under this Agreement, and will reimburse
         the Distributors for any reasonable expenses (including reasonable fees
         and  disbursements of counsel)  incurred by them in connection with the
         qualification of the Securities for sale and the determination of their
         eligibility for investment under the laws of such  jurisdictions as the
         Distributors  may  designate,  and for any fees  charged by  investment
         rating agencies for the rating of the Securities.

                  (h)  Between  the  date of a Terms  Agreement  and the date of
         delivery of  Securities  with  respect  thereto,  the Company will not,
         without the prior written consent of each Distributor  which is a party
         to such Terms Agreement,  offer or sell, or enter into any agreement to
         sell, any of its debt securities which are substantially similar to the
         Securities other than borrowings  under the Company's  revolving credit
         agreements  and lines of credit,  the private  placement of securities,
         and the issuance of commercial paper.

                  5.  Conditions  of   Obligations.   The  obligations  of  each
Distributor,  as agent  of the  Company,  under  this  Agreement  at any time to
solicit offers to purchase the Securities  and to purchase  Securities  from the
Company as principal is subject to the accuracy,  on the date hereof and on each
Representation  Date,  of the  representations  and  warranties  of the  Company
herein,  to the accuracy,  on each such date, of the statements of the Company's
officers made pursuant to the provisions hereof, to the performance, on or prior
to each such date, by the Company of its obligations  hereunder,  and to each of
the following additional conditions precedent:

                  (a) The  Prospectus,  as  amended  or  supplemented  as of any
         Representation  Date,  shall  have been filed  with the  Commission  in
         accordance with the Rules and Regulations and no stop order  suspending
         the effectiveness of the Registration Statements or of any part thereof
         shall have been issued and no  proceedings  for that purpose shall have
         been instituted or, to the knowledge of the Company or any Distributor,
         shall be contemplated by the Commission.
                                       9

                  (b) Neither the Registration Statements nor the Prospectus, as
         amended or supplemented as of any  Representation  Date,  shall contain
         any untrue  statement of fact which, in the opinion of any Distributor,
         is  material  or omits to state a fact  which,  in the  opinion  of any
         Distributor,  is material  and is  required to be stated  therein or is
         necessary to make the statements therein not misleading.

                  (c)  There  shall not have  occurred  (i) any  change,  or any
         development   involving  a   prospective   change,   in  or   affecting
         particularly   the  business  or  properties  of  the  Company  or  its
         subsidiaries  which,  in the  judgment of the  Distributors  materially
         impairs the investment quality of the Securities,  (ii) a suspension or
         material limitation in trading in securities  generally on the New York
         Stock  Exchange,  (iii) a  general  moratorium  on  commercial  banking
         activities  in New York  declared  by either  Federal or New York State
         authorities, (iv) a lowering of the rating of any of the Company's debt
         securities or a public  announcement that any such debt securities have
         been   placed  on   CreditWatch,   Watchlist,   or  under  any  similar
         surveillance or review, in each case with negative implications, by any
         recognized  rating agency,  and (v) any outbreak or escalation of major
         hostilities in which the United States is involved,  any declaration of
         war by Congress  or any other  substantial  national  or  international
         calamity  or  emergency  if, in the  judgment of the  Distributors  the
         effect  of any such  outbreak,  escalation,  declaration,  calamity  or
         emergency   makes  it   impractical  or  inadvisable  to  proceed  with
         completion of the sale of and payment for the Securities.

                  (d) With  respect to any  Security  denominated  in a currency
         other  than the U.S.  dollar,  more than one  currency  or a  composite
         currency or any Security the  principal or interest of which is indexed
         to such  currency,  currencies or composite  currency,  there shall not
         have occurred a suspension or material  limitation in foreign  exchange
         trading in such currency,  currencies or composite  currency by a major
         international   bank,  a  general   moratorium  on  commercial  banking
         activities  in  the  country  or  countries   issuing  such   currency,
         currencies  of  composite  currency,  the  outbreak  or  escalation  of
         hostilities involving, the occurrence of any material adverse change in
         the existing  financial,  political or economic  conditions  of, or the
         declaration of war or a national emergency by, the country or countries
         issuing  such  currency,   currencies  or  composite  currency  or  the
         imposition  or  proposal  of  exchange  controls  by  any  governmental
         authority in the country or countries issuing such currency, currencies
         or composite currency;

                  (e)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in such Terms Agreement, the Distributors or the Distributor purchasing
         such Securities  (the  "Purchasing  Distributor"),  as the case may be,
         shall have received an opinion, dated the Closing Date, or such date of
         delivery, as the case may be, of Snell & Wilmer L.L.P., counsel for the
         Company, to the effect that:

                           (i) The  Company  is a  corporation  duly  organized,
                  validly  existing,  and in good standing under the laws of the
                  State of Arizona and has full corporate power and authority to
                  carry on its business as presently conducted;  and the Company
                  is duly qualified as a foreign  corporation to do business and
                                       10

                  is in good  standing  in the State of New Mexico and the State
                  of California,  the only other  jurisdictions in which it owns
                  or leases  substantial  properties  or in which the conduct of
                  its business requires such qualification;

                           (ii)  The   Indenture   has  been  duly   authorized,
                  executed,  and delivered,  has been duly  qualified  under the
                  Trust  Indenture  Act,  and  constitutes  a valid and  binding
                  instrument  enforceable in accordance with its terms except as
                  the same may be limited by (a) general principles of equity or
                  by  bankruptcy,   insolvency,   reorganization,   arrangement,
                  moratorium,  or other laws or equitable principles relating to
                  or affecting the enforcement of creditors' rights generally or
                  the enforcement of the security provided by the Indenture, (b)
                  the necessity  for  compliance  with the statutory  procedural
                  rights  governing  the  exercise  of  remedies  by  a  secured
                  creditor,  and (c) the  qualification  that  certain  waivers,
                  procedures,  remedies,  and other provisions of the Securities
                  and the Indenture may be unenforceable under or limited by the
                  law of the  State of  Arizona;  however,  such law does not in
                  such  counsel's  opinion  substantially  prevent the practical
                  realization of the benefits intended by such documents;

                           (iii) Any  series  of  Securities  established  on or
                  prior  to the  date of such  opinion  in  conformity  with the
                  Indenture, and, when the terms of a particular Security and of
                  its   issuance  and  sale  have  been  duly   authorized   and
                  established  by all necessary  corporate  action in conformity
                  with the Indenture, and such Security has been duly completed,
                  authenticated, and issued in accordance with the Indenture and
                  delivered  against  payment as contemplated by this Agreement,
                  such Security will  constitute a valid and binding  obligation
                  of the  Company  entitled  to  the  benefits  provided  by the
                  Indenture  (except as the same may be  limited by (a)  general
                  principles   of   equity   or   by   bankruptcy,   insolvency,
                  reorganization,  arrangement,  moratorium,  or  other  laws or
                  equitable  principles relating to or affecting the enforcement
                  of  creditors'  rights  generally  or the  enforcement  of the
                  security  provided by the  Indenture,  (b) the  necessity  for
                  compliance with the statutory  procedural rights governing the
                  exercise  of  remedies  by a  secured  creditor,  and  (c) the
                  qualification that certain waivers, procedures,  remedies, and
                  other  provisions  of such  Security and the  Indenture may be
                  unenforceable  under  or  limited  by the law of the  State of
                  Arizona;  however, such law does not in such counsel's opinion
                  substantially   prevent  the  practical   realization  of  the
                  benefits intended by such documents), it being understood that
                  such counsel may (A) assume that at the time of the  issuance,
                  sale and delivery of each Security the  authorization  of such
                  series will not have been modified or rescinded and there will
                  not have  occurred any change in law  affecting  the validity,
                  legally binding  character or enforceability of such Security,
                  (B) assume that neither the issuance, sale and delivery of any
                  Security,   nor  any  of  the  terms  of  such  Security,  nor
                  compliance  by the  Company  with such terms will  violate any
                  applicable  law, any agreement or instrument then binding upon
                  the  Company  or  any  restriction  imposed  by any  
                                       11

                  court  or  governmental  body  having  jurisdiction  over  the
                  Company  and (C) state  that as of the date of such  opinion a
                  judgement   for  money  in  an  action  based  on   Securities
                  denominated  in  foreign  currencies  or  currency  units in a
                  Federal or State court in the United States  ordinarily  would
                  be  enforced  in the  United  States  only  in  United  States
                  dollars,  and  that  the date  used to  determine  the rate of
                  conversion of the foreign  currency unit in which a particular
                  Security is denominated into United States dollars will depend
                  upon  various  factors,  including  which  court  renders  the
                  judgment;

                           (iv) The Mortgage has been duly authorized, executed,
                  and  delivered,  has  been  duly  qualified  under  the  Trust
                  Indenture Act, and constitutes a valid and binding  instrument
                  enforceable in accordance  with its terms,  except as the same
                  may be  limited  by (a)  general  principles  of  equity or by
                  bankruptcy,    insolvency,    reorganization,     arrangement,
                  moratorium,  or other laws or equitable principles relating to
                  or affecting the enforcement of creditors' rights generally or
                  the enforcement of the security provided by the Mortgage,  (b)
                  the necessity  for  compliance  with the statutory  procedural
                  rights  governing  the  exercise  of  remedies  by  a  secured
                  creditor,  and (c) the  qualification  that  certain  waivers,
                  procedures,  remedies, and other provisions of the Senior Note
                  Mortgage Bonds and the Mortgage may be unenforceable  under or
                  limited by the law of the State of Arizona;  however, such law
                  does not in such counsel's opinion  substantially  prevent the
                  practical   realization  of  the  benefits  intended  by  such
                  document;

                           (v)  Any  series  of  Senior  Note   Mortgage   Bonds
                  established  on or  prior  to the  date  of  such  opinion  in
                  conformity with the Indenture and the Mortgage,  and, when the
                  terms of a  particular  Senior Note  Mortgage  Bond and of its
                  issuance and sale have been duly authorized and established by
                  all  necessary   corporate   action  in  conformity  with  the
                  Indenture and the Mortgage, and such Senior Note Mortgage Bond
                  has  been  duly  completed,   authenticated,   and  issued  in
                  accordance  with the Mortgage and  delivered to the Trustee as
                  security for  Securities,  such Senior Note Mortgage Bond will
                  constitute  a valid  and  binding  obligation  of the  Company
                  entitled to the benefits  provided by the Mortgage  (except as
                  the same may be limited by (a) general principles of equity or
                  by  bankruptcy,   insolvency,   reorganization,   arrangement,
                  moratorium,  or other laws or equitable principles relating to
                  or affecting the enforcement of creditors' rights generally or
                  the enforcement of the security provided by the Mortgage,  (b)
                  the necessity  for  compliance  with the statutory  procedural
                  rights  governing  the  exercise  of  remedies  by  a  secured
                  creditor,  and (c) the  qualification  that  certain  waivers,
                  procedures, remedies, and other provisions of such Senior Note
                  Mortgage Bond and the Mortgage may be  unenforceable  under or
                  limited by the law of the State of Arizona;  however, such law
                  does not in such counsel's opinion  substantially  prevent the
                  practical   realization  of  the  benefits  intended  by  such
                  documents),  it being  understood  that such  counsel  may (A)
                  assume that at the time of the issuance,  sale and delivery of
                                       12

                  each  Senior  Note  Mortgage  Bond the  authorization  of such
                  series will not have been modified or rescinded and there will
                  not have  occurred any change in law  affecting  the validity,
                  legally  binding  character or  enforceability  of such Senior
                  Note Mortgage Bond, (B) assume that neither the issuance, sale
                  and delivery of any Senior Note Mortgage  Bond, nor any of the
                  terms of such Senior Note Mortgage Bond, nor compliance by the
                  Company with such terms will violate any  applicable  law, any
                  agreement or  instrument  then binding upon the Company or any
                  restriction  imposed by any court or governmental  body having
                  jurisdiction  over the  Company  and (C) state  that as of the
                  date of such opinion a judgement  for money in an action based
                  on  Senior  Note  Mortgage   Bonds   denominated   in  foreign
                  currencies  or  currency  units in a Federal or State court in
                  the United States  ordinarily  would be enforced in the United
                  States only in United States  dollars,  and that the date used
                  to determine the rate of  conversion  of the foreign  currency
                  unit in  which  a  particular  Senior  Note  Mortgage  Bond is
                  denominated  into  United  States  dollars  will  depend  upon
                  various factors, including which court renders the judgment;

                           (vi) Except for property  specifically  excepted from
                  the lien of the Mortgage or released  therefrom in  accordance
                  with the terms  thereof,  the Company has good and  marketable
                  title in fee simple,  except for items  described in (A), (B),
                  and  (C)  below,  to all of the  real  property  and  fixtures
                  thereon  purported  in the Mortgage to be so held and that are
                  both  located in the State of Arizona and  described  in those
                  title reports  covering at least the Saguaro,  Yucca,  Cholla,
                  Ocotillo,  West  Phoenix,  and Palo Verde plant sites that are
                  listed on an exhibit to such opinion  (the "Title  Documents")
                  (in giving such opinion, such counsel may rely solely upon the
                  Title Documents and may assume the accuracy thereof and of the
                  real  property  descriptions  contained  therein and may state
                  that no other  investigation  or  inquiry  has been  made with
                  respect thereto),  and in giving the opinions  described below
                  with respect to any liens,  defects,  and encumbrances on such
                  title to such personal property,  such counsel may assume that
                  the Company  has good and valid  title to all of the  personal
                  property  located in the State of Arizona and described in the
                  Mortgage as subject to the lien thereof (which  property shall
                  not include fixtures),  and such counsel may rely solely upon,
                  and assume the accuracy of, a search of the Uniform Commercial
                  Code Financing  Statements filed in the records of the Arizona
                  Secretary  of State and may assume  that there are no liens or
                  other  encumbrances  on  personal  property  (as  used  in the
                  Arizona Uniform Commercial Code) of the Company located in the
                  State of Arizona other than liens or other  encumbrances  that
                  have been  perfected  by filing with the Arizona  Secretary of
                  State  under  Arizona  Revised  Statutes   ("A.R.S.")  Section
                  47-9401.A;  such title is subject only to: (A) the lien of the
                  Mortgage,   (B)  Excepted   Encumbrances  as  defined  in  the
                  Mortgage, and (C) other liens, encumbrances,  
                                       13

                  or defects,  none of which,  individually or in the aggregate,
                  in the opinion of such counsel,  materially interfere with the
                  business or operations of the Company (in determining  whether
                  any such other  liens,  encumbrances,  or  defects  materially
                  interfere with the business or operations of the Company, such
                  counsel may rely solely  upon a  certificate  of an officer or
                  engineer  of the  Company  which  shall  be  attached  to such
                  opinion and such opinion may state that no other investigation
                  or inquiry with respect thereto has been made);  the Mortgage,
                  subject  only  as  above  set  forth  in  this   clause,   now
                  constitutes,  and the Mortgage  and the Mortgage  Supplemental
                  Indentures  theretofore  executed,  subject  only as above set
                  forth in this  clause,  when the  latter  shall have been duly
                  recorded and filed, will constitute,  together and as a single
                  instrument,  a direct and valid first  mortgage lien upon said
                  property;  and all properties (other than the classes or items
                  of property  expressly  excepted in the  Mortgage or expressly
                  released from the lien thereof)  acquired by the Company after
                  the  date of such  opinion  in each  county  in the  State  of
                  Arizona in which the Mortgage  and the  Mortgage  Supplemental
                  Indentures  shall have been duly  recorded and filed and, with
                  respect to priority  only,  any necessary  recordation  and/or
                  filing has been accomplished  (including therein any necessary
                  descriptions of after-acquired real property and real property
                  upon which  after-acquired  fixtures are affixed)  will,  upon
                  such  acquisition,  become  subject to the first mortgage lien
                  thereof,  subject,  however,  to Excepted  Encumbrances and to
                  liens,  if any,  existing or placed thereon at the time of the
                  acquisition  thereof  by the  Company  and,  with  respect  to
                  priority only, to liens, if any, existing prior to the time of
                  any necessary recordation and/or filing by the Company;

                           (vii)  The   Company  is  the  owner  of  the  rights
                  conferred upon it by the leases from the Navajo Tribe relating
                  to the site on which the  Navajo  Plant is  located  and while
                  such  counsel  is not  aware  of the  assertion  of any  claim
                  contesting  the title of the Navajo Tribe to the lands leased,
                  such counsel shall not be required to express any opinion with
                  respect  to the  interest  of the  Navajo  Tribe in the  lands
                  leased or with  respect to the  enforceability  of such leases
                  against the Navajo Tribe;

                           (viii)  With  certain  exceptions,  a public  service
                  corporation is required to obtain  certificates of convenience
                  and necessity from the Arizona  Corporation  Commission  under
                  A.R.S.  Section 40-281.A for construction of its lines, plant,
                  services,  or systems, or any extensions  thereof,  within the
                  State of Arizona, and to obtain franchises or similar consents
                  or permits from counties and incorporated municipalities under
                  A.R.S. Section 40-283.A for the construction,  operation,  and
                  maintenance of transmission lines within the State of Arizona;
                  to the best of such counsel's knowledge after due inquiry, the
                  Company   holds  such  valid   franchises,   certificates   of
                  convenience and necessity,  consents,  and permits pursuant to
                  such statutory provisions as are necessary with respect to the
                  maintenance  and operation of its property and business as now
                  conducted, except that (A) the Company from time to time makes
                  minor  extensions  of its  system  prior to the time a related
                  franchise,  certificate,  license, or permit is procured,  (B)
                  from  time to time  communities  already  being  served 
                                       14

                  by the Company become  incorporated and considerable  time may
                  elapse before a franchise is procured,  (C) certain franchises
                  may have  expired  prior  to the  renegotiation  thereof,  (D)
                  certain  minor  defects  and   exceptions   may  exist  which,
                  individually  and in the aggregate,  are not deemed  material,
                  and (E) such  counsel  need not be  required  to  express  any
                  opinion  regarding the  geographical  scope of any  franchise,
                  certificate, license, or permit that is not specific as to its
                  geographical scope;

                           (ix) No consent, approval,  authorization, or consent
                  of any public board or body is required  for the  consummation
                  of  the  transactions  contemplated  hereby  or in  any  Terms
                  Agreement,  including the issuance and sale of Securities  and
                  Senior Note Mortgage Bonds and the execution and delivery of a
                  related  Supplemental   Indenture  and  Mortgage  Supplemental
                  Indenture, except as may be required under state securities or
                  blue sky  laws,  as to which  laws such  counsel  shall not be
                  required  to express  an  opinion,  and such  other  approvals
                  (specified in such opinion) as have been obtained;

                           (x) The  First  Registration  Statement,  the  Second
                  Registration  Statement,  the Third Registration Statement and
                  the Fourth Registration  Statement have become effective under
                  the Act, and, to the best of the knowledge of such counsel, no
                  stop  order   suspending  the   effectiveness   of  the  First
                  Registration Statement, the Second Registration Statement, the
                  Third  Registration   Statement  or  the  Fourth  Registration
                  Statement has been issued and no proceedings  for that purpose
                  have been instituted or are pending or contemplated  under the
                  Act, and each part of the Registration  Statements,  when such
                  part became effective,  and the Prospectus,  as of the Closing
                  Date, and any amendment or supplement thereto, as of its date,
                  complied  as  to  form  in  all  material  respects  with  the
                  requirements  of the Act,  the Trust  Indenture  Act,  and the
                  published Rules and Regulations; such counsel has no reason to
                  believe  that any part of the  Registration  Statements,  when
                  such  part  became  effective,  or the  Prospectus,  as of the
                  Closing Date, or any  amendment or supplement  thereto,  as of
                  its date, contained any untrue statement of a material fact or
                  omitted  to state  any  material  fact  required  to be stated
                  therein  or  necessary  to make  the  statements  therein  not
                  misleading;  the descriptions in the  Registration  Statements
                  and Prospectus of statutes, legal and governmental proceedings
                  and  contracts,  and other  documents  are accurate and fairly
                  present  the  information  required  to be  shown;  and to the
                  actual   knowledge  of  those  persons  in  the  lawyer  group
                  described in such opinion,  there are no legal or governmental
                  proceedings  required to be described in the  Prospectus  that
                  are not described as required,  nor any contracts or documents
                  of a character  required to be described  in the  Registration
                  Statements  or  Prospectus  or to be filed as  exhibits to the
                  Registration  Statements  that are not  described and filed as
                  required (it being  understood  that such counsel need express
                  no opinion as to the financial  statements or other  financial
                  data   contained  in  the   Registration   Statements  or  the
                  Prospectus); and
                                       15

                           (xi)  This   Agreement  has  been  duly   authorized,
                  executed, and delivered by the Company.

                  In giving such  opinion,  (a) Snell & Wilmer  L.L.P.  may rely
         solely upon  certificates of the Company as to any factual matters upon
         which any such  opinions  are based  and may rely upon the  opinion  of
         Keleher & McLeod,  P.A.,  referred to below, as to all matters governed
         by the laws of the  State of New  Mexico,  but the  opinion  of Snell &
         Wilmer L.L.P.  shall state that, though they are members of the Arizona
         Bar and do not hold  themselves out as experts on the laws of the State
         of New Mexico, they have made a study of the laws of such State insofar
         as such laws are involved in the  conclusions  stated in their opinion,
         and from such study it is their  opinion  that such laws  support  such
         conclusions and that, in their opinion,  the  Distributors and they are
         justified  to such  extent in  relying  upon the  opinion  of Keleher &
         McLeod,  P.A.;  (b)  Snell &  Wilmer  L.L.P.  may  rely on the  opinion
         delivered  pursuant to Section  5(g) as to all matters  governed by the
         laws of the State of New York;  and (c) the lawyer group referred to in
         such opinion  will mean those  lawyers in the offices of Snell & Wilmer
         L.L.P.  who (i) have billed any time on the  particular  transaction to
         which such  opinion  relates or (ii) have billed more than ten hours to
         any Company  matter in the  twelve-month  period  preceding the date on
         which the list of such  lawyers was  compiled  for  purposes of inquiry
         pursuant to such opinion.

                  (f)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in  such  Terms   Agreement,   the   Distributors   or  the  Purchasing
         Distributor,  as the case may be, shall have received an opinion, dated
         the Closing, or such date of delivery, as the case may be, of Keleher &
         McLeod, P.A., New Mexico counsel for the Company, to the effect that:

                           (i)  The  Company  is  duly  qualified  as a  foreign
                  corporation  to do  business  and is in good  standing  in the
                  State of New Mexico and has full corporate power and authority
                  to  engage  in the State of New  Mexico  in the  business  now
                  conducted by it therein; and

                           (ii) The  activities  of the  Company in the State of
                  New Mexico to date do not constitute it a "public  utility" as
                  that term is defined in the relevant  laws of the State of New
                  Mexico,  and  accordingly,  no public  utility  franchises  or
                  certificates  of convenience and necessity are necessary under
                  New Mexico law with respect to the  maintenance  and operation
                  of the Company's property and business as now conducted in the
                  State of New Mexico and no approval, authorization, or consent
                  of the New  Mexico  Public  Utility  Commission  or any  other
                  public  board or body of the State of New  Mexico is  required
                  for the issuance and sale of the Securities or the Senior Note
                  Mortgage Bonds on the terms and  conditions  herein and in the
                  Prospectus set forth or  contemplated  or for the execution of
                  the Supplemental  Indenture  relating to the Securities or the
                  Mortgage  Supplemental  Indenture  relating to the Senior Note
                  Mortgage  Bonds,  except as may be  required  under New Mexico
                  state  securities  or blue 
                                       16

                  sky laws,  as to which laws such counsel shall not be required
                  to express an opinion.

                           (iii)  Assuming  that the  Company has good and valid
                  title to all of the personal  property located in the State of
                  New Mexico and  described  in the  Mortgage  as subject to the
                  lien  thereof  (which  property  shall not  include  fixtures)
                  ("Personal Property"),  in giving the opinions described below
                  with respect to any liens,  defects and  encumbrances  on such
                  title to such Personal Property,  such counsel may rely solely
                  upon,  and assume  the  accuracy  of, a search of the  Uniform
                  Commercial Code Financing  Statements  filed in the records of
                  the New Mexico  Secretary  of State and may assume  that there
                  are no liens or other  encumbrances  on personal  property (as
                  used in the New Mexico Uniform Commercial Code) of the Company
                  located in the State of New  Mexico  other than liens or other
                  encumbrances  that have been  perfected by filing with the New
                  Mexico Secretary of State under Section  55-9-401,  New Mexico
                  Statutes  Annotated 1978; such title to such Personal Property
                  is subject only to: (A) the lien of the Mortgage, (B) Excepted
                  Encumbrances as defined in the Mortgage,  and (C) other liens,
                  encumbrances,  or defects,  none of which,  individually or in
                  the  aggregate,  in the  opinion of such  counsel,  materially
                  interfere  with the business or  operations of the Company (in
                  determining  whether any such other  liens,  encumbrances,  or
                  defects  materially  interfere with the business or operations
                  of  the   Company,   such  counsel  may  rely  solely  upon  a
                  certificate  of an officer or engineer  of the  Company  which
                  shall be attached to such  opinion and such  opinion may state
                  that no other  investigation  or inquiry with respect  thereto
                  has been made); the Mortgage,  subject only as above set forth
                  in this  clause,  now  constitutes,  and the  Mortgage and the
                  Mortgage Supplemental Indentures theretofore executed, subject
                  only as above set forth in this clause,  when the latter shall
                  have been duly recorded and filed,  will constitute,  together
                  and as a single instrument,  a direct and valid first mortgage
                  lien upon such Personal  Property;  and all properties  (other
                  than the  classes or items of property  expressly  excepted in
                  the  Mortgage or  expressly  released  from the lien  thereof)
                  acquired by the Company after the date of this opinion in each
                  county in the State of New  Mexico in which the  Mortgage  and
                  the  Mortgage  Supplemental  Indentures  shall  have been duly
                  recorded  and filed and,  with respect to priority  only,  any
                  necessary  recordation  and/or  filing  has been  accomplished
                  (including    therein   any    necessary    descriptions    of
                  after-acquired  real  property  and real  property  upon which
                  after-acquired   fixtures   are  affixed)   will,   upon  such
                  acquisition,   become  subject  to  the  first  mortgage  lien
                  thereof,  subject,  however,  to Excepted  Encumbrances and to
                  liens,  if any,  existing or placed thereon at the time of the
                  acquisition  thereof  by the  Company  and,  with  respect  to
                  priority only, to liens, if any, existing prior to the time of
                  any necessary recordation and/or filing by the Company;
                                       17

                           (iv) The Company is the owner of the rights conferred
                  upon it by the leases  from the Navajo  Tribe  relating to the
                  site on which the Four Corners plant is located and while such
                  counsel is not aware of the assertion of any claim  contesting
                  the  interest of the Navajo  Tribe in the lands  leased,  such
                  counsel  shall not be required  to express  any  opinion  with
                  respect  to the  interest  of the  Navajo  Tribe in the  lands
                  leased or with  respect to the  enforceability  of such leases
                  against the Navajo Tribe.

         In giving such  opinion,  Keleher & McLeod,  P.A.  may rely solely upon
         certificates  of the Company as to any factual  matters  upon which any
         such opinions are based.

                  (g)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in  such  Terms   Agreement,   the   Distributors   or  the  Purchasing
         Distributor,  as the case may be, shall have received an opinion, dated
         the Closing  Date,  or such date of delivery,  as the case may be, from
         counsel for the Distributors or the Purchasing Distributor, as the case
         may be, dated the Closing  Date or such date of  delivery,  as the case
         may be, with respect to the incorporation of the Company,  the validity
         of the  Securities,  the Senior Note Mortgage Bonds,  the  Registration
         Statements, the Prospectus, and other related matters as may reasonably
         be required,  and the Company shall have furnished to such counsel such
         documents as they request for the purpose of enabling them to pass upon
         such matters.  In rendering  such opinion,  such counsel may rely as to
         the  incorporation of the Company and all other matters governed by the
         laws of the States of Arizona and New Mexico upon the opinions of Snell
         & Wilmer L.L.P. and Keleher & McLeod, P.A., referred to above.

                  (h)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in  such  Terms   Agreement,   the   Distributors   or  the  Purchasing
         Distributor,  as the case may be, shall have received a certificate  of
         the  President  or any Vice  President  and a  principal  financial  or
         accounting officer of the Company,  dated the Closing Date or such date
         of delivery, as the case may be, in which such officers, to the best of
         their knowledge after  reasonable  investigation,  shall state that the
         representations  and  warranties  of the Company in this  Agreement are
         true and correct, that the Company has complied with all agreements and
         satisfied all conditions on its part to be performed or satisfied at or
         prior  to  the  Closing  Date,  that  no  stop  order   suspending  the
         effectiveness  of  the  First   Registration   Statement,   the  Second
         Registration Statement,  the Third Registration Statement or the Fourth
         Registration  Statement  has been  issued and no  proceedings  for that
         purpose have been instituted or are contemplated by the Commission, and
         that, subsequent to the date of the most recent financial statements in
         the  Prospectus,  there  has been no  material  adverse  change  in the
         financial  position  or results of  operations  of the  Company and its
         subsidiaries  except as set forth or  contemplated in the Prospectus or
         as described in such certificate.

                  (i)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in  such  Terms   Agreement,   the   Distributors   or  the  Purchasing
         Distributor,  as the case  may be,  shall  have  received  a letter  of
         Deloitte & Touche LLP, dated the Closing Date or such date of delivery,
         as the case may be,  confirming  that  they are  independent  certified
         public  accountants  within the  meaning of the Act and the  applicable
                                       18

         published Rules and Regulations thereunder,  and stating in effect that
         (i) in their  opinion the  financial  statements  and  schedules of the
         Company   audited  by  them  and   incorporated  by  reference  in  the
         Registration Statements comply as to form in all material respects with
         the applicable  accounting  requirements of the Securities Exchange Act
         of 1934 (the  "1934  Act")  and the  published  Rules  and  Regulations
         thereunder  and (ii) on the basis of a reading of the latest  available
         interim financial statements of the Company,  inquiries of officials of
         the Company responsible for financial and accounting matters, and other
         specified procedures,  nothing came to their attention that caused them
         to believe that (A) the unaudited financial statements  incorporated by
         reference,  if any, in the Registration  Statements do not comply as to
         form  in  all  material   respects  with  the   applicable   accounting
         requirements  of the 1934 Act and the published  Rules and  Regulations
         thereunder or are not stated on a basis  substantially  consistent with
         that of the audited financial  statements  incorporated by reference in
         the  Registration  Statements,  (B) at the  date  of  the  most  recent
         available  unaudited  financial  statements and at a specified date not
         more than five days prior to the date of this Agreement,  there was any
         increase in the amounts of common stock, redeemable preferred stock, or
         non-redeemable   preferred  stock  of  the  Company  or  any  increase,
         exceeding $10,000,000, in long-term debt of the Company or, at the date
         of the most recent available unaudited  financial  statements there was
         any decrease in net assets as compared  with amounts  shown in the most
         recent   financial   statements   incorporated   by  reference  in  the
         Registration  Statements,  or (C) for the twelve-month  period ended at
         the date of the most recent available  unaudited  financial  statements
         there  were  any   decreases,   exceeding  3%,  as  compared  with  the
         twelve-month  period  ended at the date of the  most  recent  financial
         statements incorporated by reference in the Registration Statements, in
         the amounts of total  revenues  or net income,  except in all cases for
         increases or decreases  which result from the declaration or payment of
         dividends, or which the Registration Statements (including any material
         incorporated by reference therein) disclose have occurred or may occur,
         or which are described in such letter.

                  The Company will furnish the Distributors  with such conformed
copies  of  such  opinions,  certificates,  letters,  and  documents  as  may be
reasonably requested.

                  6.  Additional  Covenants of the Company.  The Company  agrees
         that:

                  (a)  Each  acceptance  by the  Company  of an  offer  for  the
         purchase of Securities  shall be deemed to be an  affirmation  that its
         representations and warranties contained in this Agreement are true and
         correct  at the  time of  such  acceptance  and a  covenant  that  such
         representations  and warranties will be true and correct at the time of
         delivery to the purchaser of the Securities as though made at and as of
         each such  time,  it being  understood  that such  representations  and
         warranties  shall  relate  to  the  Registration   Statements  and  the
         Prospectus  as amended  or  supplemented  at each such time.  Each such
         acceptance by the Company of an offer to purchase  Securities  shall be
         deemed  to  constitute  an  additional  representation,   warranty  and
         agreement  by the  Company  that,  as of the date of  delivery  of such
         Securities  to  the  purchaser  thereof,  after  giving  effect  to the
         issuance of such Securities, of any other Securities to be issued on or
         prior to such delivery date and of any other  Registered  Securities to
         be issued and sold by the  Company on or prior to such  delivery  date,
         the  aggregate   amount  of  Registered   Securities   (including   
                                       19

         any Securities) which have been issued and sold by the Company will not
         exceed the amount of Registered  Securities  registered pursuant to the
         Registration Statements.

                  (b)  Each  time  that  the  Registration   Statements  or  the
         Prospectus  shall be amended or  supplemented  (other than by a Pricing
         Supplement,  an amendment or supplement which relates exclusively to an
         offering of securities  other than the  Securities,  or an amendment or
         supplement  that  occurs  through the filing an  incorporated  document
         (other than a Form 10-K or Form 10-Q) with the Commission), the Company
         shall,  (A)  concurrently  with such amendment or  supplement,  if such
         amendment  or  supplement  shall  occur  at a  Marketing  Time,  or (B)
         immediately  at the next Marketing Time if such amendment or supplement
         shall not occur at a Marketing Time,  furnish the  Distributors  with a
         certificate,  dated the date of delivery  thereof,  of the President or
         any Vice President and a principal  financial or accounting  officer of
         the Company,  in form satisfactory to the  Distributors,  to the effect
         that the statements  contained in the certificate  covering the matters
         set  forth in  Section  5(h)  hereof  which was last  furnished  to the
         Distributors  pursuant to this Section 6(b) are true and correct at the
         time of such amendment or supplement,  as though made at and as of such
         time or, in lieu of such  certificate,  a certificate of the same tenor
         as the certificate referred to in Section 5(h).

                  (c) At each  Representation  Date referred to in Section 6(b),
         the Company shall, (A) concurrently if such  Representation  Date shall
         occur at a Marketing  Time, or (B)  immediately  at the next  Marketing
         Time if such  Representation  Date shall not occur at a Marketing Time,
         furnish the Distributors with a written opinion or opinions,  dated the
         date of such  Representation  Date, of counsel for the Company, in form
         satisfactory to the  Distributors,  to the effect set forth in Sections
         5(e) and 5(f) hereof; provided, however, that to the extent appropriate
         such  opinion or opinions  may  reconfirm  matters set forth in a prior
         opinion  delivered  at the  Closing  Date or under this  Section  6(c);
         provided further, however, that any opinion or opinions furnished under
         this Section 6(c) shall relate to the  Registration  Statements and the
         Prospectus as amended or supplemented at such Representation Date.

                  (d) At each Representation Date referred to in Section 6(b) on
         which the Registration Statements or the Prospectus shall be amended or
         supplemented to include additional financial  information,  the Company
         shall  cause   Deloitte  &  Touche  LLP,  (A)   concurrently   if  such
         Representation Date shall occur at a Marketing Time, or (B) immediately
         at the next Marketing Time if such  Representation Date shall not occur
         at a  Marketing  Time,  to  furnish  the  Distributors  with a  letter,
         addressed  jointly to the  Company and the  Distributors  and dated the
         date of such  Representation  Date,  to the effect set forth in Section
         5(i) hereof;  provided,  however,  that to the extent  appropriate such
         letter may reconfirm  matters set forth in a prior letter  delivered at
         the Closing Date or pursuant to this Section  6(d);  provided  further,
         however, that any letter furnished under this Section 6(d) shall relate
         to the  Registration  Statements  and  the  Prospectus  as  amended  or
         supplemented at such  Representation  Date, with such changes as may be
         necessary  to reflect  changes in the  financial  statements  and other
         information derived from the accounting records of the Company.
                                       20

                  (e) On  each  date  for  the  delivery  of  Securities  to the
         purchaser  thereof,  the Company shall, if requested by the Distributor
         that solicited or received the offer to purchase any  Securities  being
         delivered on such  settlement  date,  furnish such  Distributor  with a
         written  opinion or opinions,  dated the date of delivery  thereof,  of
         counsel for the Company,  to the effect set forth in Sections  5(e) and
         5(f) hereof;  provided,  however,  that in lieu of each  opinion,  such
         counsel may furnish  the  Distributor  with a letter to the effect that
         the  Distributor  may rely on such prior  opinion to the same extent as
         though it was dated such delivery date (except that  statements in such
         prior opinion shall be deemed to relate to the Registration  Statements
         and  Prospectus as amended or  supplemented  to the time of delivery of
         such letter authorizing reliance).

                  (f) The Company agrees that any obligation of a person who has
         agreed to purchase  Securities,  to make payment for, and take delivery
         of such Securities shall be subject to (i) the accuracy, on the related
         settlement  date fixed  pursuant to the  Procedures,  of the  Company's
         representation  and  warranty  deemed  to be made  to the  Distributors
         pursuant to the last sentence of subsection  (a) of this Section 6, and
         (ii)  the  satisfaction,  on  such  settlement  date,  of  each  of the
         conditions set forth in Sections 5(a), (b) and (c), it being understood
         that  under no  circumstance  shall  any  Distributor  have any duty or
         obligation to exercise the judgment permitted under Section 5(b) or (c)
         on behalf of any such person.

                  7. Indemnification.

                  (a)  The  Company  will   indemnify  and  hold  harmless  each
         Distributor  and each person,  if any, who  controls  such  Distributor
         within the meaning of the Act against  any losses,  claims,  damages or
         liabilities,  joint or  several,  to  which  such  Underwriter  or such
         controlling  person may  become  subject,  under the Act or  otherwise,
         insofar as such losses, claims,  damages, or liabilities (or actions in
         respect thereof) arise out of or are based upon any untrue statement or
         alleged untrue  statement of any material fact contained in any part of
         the Registration Statements relating to the Securities,  when such part
         became effective,  any preliminary prospectus or preliminary prospectus
         supplement,  the Prospectus, or any amendment or supplement thereto, or
         arise out of or are based  upon the  omission  or alleged  omission  to
         state  therein  a  material  fact  required  to be  stated  therein  or
         necessary  to make the  statements  therein  not  misleading;  and will
         reimburse each  Distributor  and each such  controlling  person for any
         legal or other expenses reasonably incurred by such Distributor or such
         controlling  person in connection with  investigating  or defending any
         such loss, claim, damage, liability, or action; provided, however, that
         the Company  will not be liable in any such case to the extent that any
         such loss,  claim,  damage, or liability arises out of or is based upon
         an untrue  statement or alleged untrue statement or omission or alleged
         omission  made  in  any of  such  documents  in  reliance  upon  and in
         conformity  with  written  information  furnished to the Company by any
         Distributor specifically for use therein. This indemnity agreement will
         be in addition to any liability which the Company may otherwise have.
                                       21

                  (b)  Each  Distributor  will  severally   indemnify  and  hold
         harmless the Company,  each of its directors,  each of its officers who
         have signed the Registration  Statements,  and each person, if any, who
         controls the Company within the meaning of the Act, against any losses,
         claims,  damages,  or  liabilities  to which  the  Company  or any such
         director,  officer, or controlling person may become subject, under the
         Act  or  otherwise,   insofar  as  such  losses,  claims,  damages,  or
         liabilities  (or actions in respect  thereof) arise out of or are based
         upon any untrue  statement or alleged untrue  statement of any material
         fact contained in any part of the Registration  Statements  relating to
         the  Securities,  when  such part  became  effective,  any  preliminary
         prospectus or preliminary prospectus supplement, the Prospectus, or any
         amendment or supplement  thereto, or arise out of or are based upon the
         omission  or the  alleged  omission  to state  therein a material  fact
         required  to be stated  therein  or  necessary  to make the  statements
         therein not  misleading,  in each case to the  extent,  but only to the
         extent,  that such untrue  statement  or alleged  untrue  statement  or
         omission  or  alleged  omission  was  made  in  reliance  upon  and  in
         conformity  with written  information  furnished to the Company by such
         Distributor  specifically for use therein; and will reimburse any legal
         or  other  expenses  reasonably  incurred  by the  Company  or any such
         director,   officer,   or   controlling   person  in  connection   with
         investigating or defending any such loss, claim, damage,  liability, or
         action.  This indemnity  agreement will be in addition to any liability
         which such Distributor may otherwise have.

                  (c) Promptly after receipt by an indemnified  party under this
         Section of notice of the  commencement of any action,  such indemnified
         party  will,  if a claim in respect  thereof is to be made  against the
         indemnifying party under this Section, notify the indemnifying party of
         the   commencement   thereof;   but  the  omission  so  to  notify  the
         indemnifying  party will not relieve it from any liability  that it may
         have to any  indemnified  party  otherwise than under this Section.  In
         case any such action is brought against any indemnified  party,  and it
         notifies  the  indemnifying  party  of the  commencement  thereof,  the
         indemnifying party will be entitled to participate  therein and, to the
         extent  that it may wish,  jointly  with any other  indemnifying  party
         similarly  notified,  to  assume  the  defense  thereof,  with  counsel
         satisfactory  to such  indemnified  party (who shall not,  without  the
         consent  of the  indemnified  party,  be  counsel  to the  indemnifying
         party),   and  after  notice  from  the  indemnifying   party  to  such
         indemnified party of its election so to assume the defense thereof, the
         indemnifying  party will not be liable to such indemnified  party under
         this Section for any legal or other expenses  subsequently  incurred by
         such  indemnified  party in connection  with the defense  thereof other
         than reasonable costs of investigation. An indemnifying party shall not
         be liable for any settlement of a claim or action effected  without its
         written consent, which shall not be unreasonably withheld.

                  (d) If the  indemnification  provided  for in this  Section is
         unavailable or insufficient  to hold harmless an indemnified  party for
         any loss, claim, damage,  liability,  or action described in subsection
         (a) or (b) above, then each indemnifying  party shall contribute to the
         amount  paid or  payable by such  indemnified  party as a result of the
         losses, claims, damages or liabilities referred to in subsection (a) or
         (b) above on the  following  basis:  (1) if such loss,  claim,  damage,
         liability,  or action arises under  subsection  (a) above,  then (i) in
         such  proportion  as is  appropriate  to reflect the relative  benefits
         received by the Company on the one hand and the  Distributor[s]  on the
         other from the  offering of the  Securities  or (ii) if the  allocation
         provided 
                                       22

         by  clause  (i)  above is not  permitted  by  applicable  law,  in such
         proportion as is appropriate to reflect not only the relative  benefits
         referred  to in clause  (i) above  but also the  relative  fault of the
         Company on the one hand and the Distributors on the other in connection
         with the statements or omissions which resulted in such losses, claims,
         damages  or  liabilities  as  well  as  any  other  relevant  equitable
         considerations;  and (2) if such loss,  claim,  damage,  liability,  or
         action arises under subsection (b) above, then in such proportion as is
         appropriate  to reflect  the  relative  fault of the Company on the one
         hand  and  the  Distributors  on  the  other  in  connection  with  the
         statements or omissions which resulted in such losses,  claims, damages
         or liabilities as well as any other relevant equitable  considerations.
         For the purposes of clause (1) above, the relative benefits received by
         the Company on the one hand and the  Distributors on the other shall be
         deemed to be in the same  proportion as the total net proceeds from the
         offering (before  deducting  expenses)  received by the Company bear to
         the  total  underwriting  discounts  and  commissions  received  by the
         Distributors.  For the  purposes  of  clauses  (1) and (2)  above,  the
         relative fault shall be determined by reference to, among other things,
         whether the untrue or alleged  untrue  statement of a material  fact or
         the  omission or alleged  omission to state a material  fact relates to
         information  supplied  by the  Company  or  the  Distributors  and  the
         parties'  relative  intent,   knowledge,   access  to  information  and
         opportunity  to correct or prevent  such untrue  statement or omission.
         The  amount  paid by an  indemnified  party as a result of the  losses,
         claims,  damages or  liabilities  referred to in the first  sentence of
         this  subsection  (d)  shall be deemed  to  include  any legal or other
         expenses  reasonably  incurred by such indemnified  party in connection
         with  investigating  or  defending  any  action  or claim  which is the
         subject  of  this  subsection  (d).  No  person  guilty  of  fraudulent
         misrepresentation  (within  the  meaning of  Section  11(f) of the Act)
         shall be entitled to contribution from any person who was not guilty of
         such fraudulent  misrepresentation.  The  Distributors'  obligations in
         this  subsection  (d) to contribute  are several in proportion to their
         respective obligations and not joint.

                  8.  Status  of  Each  Distributor.  In  soliciting  offers  to
purchase  the  Securities  from the Company  pursuant to this  Agreement  and in
assuming its other obligations  hereunder (other than any obligation to purchase
Securities   pursuant  to  Section  3  hereof),   each   Distributor  is  acting
individually  and not jointly and is acting  solely as agent for the Company and
not as  principal.  In  connection  with the  placement of any  Securities  by a
Distributor,  acting as agent, (a) each Distributor will make reasonable efforts
to assist the Company in obtaining  performance by each purchaser whose offer to
purchase  Securities from the Company has been solicited by such Distributor and
accepted by the  Company,  but such  Distributor  shall have no liability to the
Company in the event any such purchase is not  consummated  for any reason;  and
(b) if the Company shall default on its  obligations to deliver  Securities to a
purchaser  whose  offer  it  has  accepted,  the  Company  (i)  shall  hold  the
Distributors  harmless  against any loss,  claim or damage  arising from or as a
result of such default by the Company, and (ii) in particular,  shall pay to the
Distributors  any commission to which they would be entitled in connection  with
such sale.

                  9. Survival of Certain  Representations  and Obligations.  The
respective  indemnities,  agreements,  representations,  warranties,  and  other
statements of the Company or its officers and of the  Distributors  set forth in
or made  pursuant  to this  Agreement  will  remain  in full  force  and  effect
regardless of any investigation, or statement as to the results thereof, made by
or on  behalf of the  Distributors  or the  Company  or any of its  officers  or
directors or any controlling  person,  and will 
                                       23

survive  delivery  of and  payment  for the  Securities.  If this  Agreement  is
terminated  pursuant to Section 10 or for any other  reason or if for any reason
the sale of Securities  described in a confirmation or Terms Agreement  referred
to Section 3 by the Company to a  Distributor  is not  consummated,  the Company
shall  remain  responsible  for the  expenses  to be paid  or  reimbursed  by it
pursuant to Section 4(g) and the  obligations of the Company under Sections 4(c)
and 4(f) and the  respective  obligations  of the Company  and the  Distributors
pursuant  to  Section  7 shall  remain  in  effect.  In  addition,  if any  such
termination  of  this  Agreement  shall  occur  either  (i) at a time  when  any
Distributor  shall own any Securities  that it has purchased from the Company as
principal with the intention of reselling them and the Distributor has held such
Securities  for fewer than 90 days or (ii) after the  Company  has  accepted  an
offer to purchase  Securities but the related  settlement has not occurred,  the
obligations  of the Company  under the proviso in Section 4(b),  under  Sections
4(a),  4(d),  4(e)  and 4(h)  and,  in the case of a  termination  occurring  as
described in (ii) above,  under Sections 3(c), 6(a), 6(e) and 6(f) and under the
last sentence of Section 8, shall also remain in effect.

                  10.  Termination.  This  Agreement may be  terminated  for any
reason at any time by the Company as to any  Distributor  or, in the case of any
Distributor,  by such  Distributor  insofar  as this  Agreement  relates to such
Distributor,  upon the giving of one day's written notice of such termination to
the other parties  hereto;  provided,  however,  that this  Agreement may not be
terminated with respect to a Distributor by the giving of such notice  following
receipt by the  Company of a  confirmation  or Terms  Agreement  referred  to in
Section 3 relating to the purchase of Securities by such  Distributor  and prior
to delivery of the Securities described in such confirmation or Terms Agreement,
unless the sale and purchase of Securities  contemplated  thereby is rejected by
the  Company in  accordance  with  Section  3. Any  settlement  with  respect to
Securities   placed  by  a  Distributor  on  an  agency  basis  occurring  after
termination  of this Agreement  shall be made in accordance  with the Procedures
and each  Distributor  agrees,  if requested  by the Company,  to take the steps
therein  provided  to be taken  by such  Distributor  in  connection  with  such
settlement.

                  11. Sales of Securities  Denominated  in a Currency other than
U.S. Dollars or of Indexed Securities. If at any time the Company and any of the
Distributors  shall  determine  to issue and sell  Securities  denominated  in a
currency  other than U.S.  dollars,  which other currency may include a currency
unit,  or with  respect to which an index is used to  determine  the  amounts of
payments of  principal  and any premium and  interest,  the Company and any such
Distributor  may execute  and deliver a  supplement  to this  Agreement  for the
purpose of making any appropriate additions to and modifications of the terms of
this Agreement (and the Procedures)  applicable to such Securities and the offer
and sale thereof.  The Distributors are authorized to solicit offers to purchase
Securities  with respect to which an index is used to  determine  the amounts of
payments of principal and any premium and interest,  and the Company shall agree
to any sales of such  Securities  (whether  offered  on an  agency or  principal
basis),  only in a minimum aggregate amount of $2,500,000.  The Company will not
issue Securities denominated in Yen otherwise than in compliance with applicable
Japanese  laws,  regulations  and policies.  In  particular,  the Company or its
designated  agent shall  submit such reports or  information  as may be required
from time to time by applicable law,  regulations and guidelines  promulgated by
Japanese  governmental  and regulatory  authorities in the case of the issue and
purchase of the  Securities and the Company shall ensure that each such Security
shall have a minimum  denomination of 
                                       24

(Y)1,000,000  and  a  minimum  maturity  of  one  year  or  such  other  minimum
denomination  and  maturity  as may be  allowed  from  time to time by  Japanese
governmental and regulatory authorities.

                  12.  Notices.  All  communications  hereunder  relating to any
offering of Securities will be in writing, and, if sent to the Distributors, may
be mailed,  delivered,  or telecopied and confirmed at their addresses furnished
to the Company in writing for the purpose of communications.  All communications
hereunder to the Company shall be mailed to the Company,  Attention:  Treasurer,
at P.O. Box 53999, Phoenix, Arizona 85072-3999,  or delivered, or telecopied and
confirmed to the Company at 400 North Fifth Street, Phoenix, Arizona 85004.

                  13.  Successors.  This  Agreement will inure to the benefit of
and be binding upon the parties hereto and the  Distributors as are named in any
Terms Agreement and their  respective  successors and the officers and directors
and controlling  persons referred to in Section 7 and, to the extent provided in
Section 6(f), any person who has agreed to purchase Securities from the Company,
and no other person will have any right or obligation hereunder.

                  14.  Governing  Laws;  Counterparts.  This Agreement  shall be
governed by and construed in accordance  with the laws of the State of New York.
This  Agreement  and  any  Terms  Agreement  may be  executed  in  one  or  more
counterparts,  each of which  shall be  deemed to be an  original,  but all such
respective counterparts shall together constitute a single instrument.
                                       25

                  If the foregoing is in accordance with your  understanding  of
our  agreement,  kindly  sign and return to us the  enclosed  duplicate  hereof,
whereupon  it will  become a  binding  agreement  between  the  Company  and the
Underwriters in accordance with its terms.


                                               Very truly yours,

                                               ARIZONA PUBLIC SERVICE COMPANY




                                               By: Nancy E. Newquist
                                                   -----------------------------
                                                   Treasurer


Confirmed and Accepted, as of the 
date first above written:


CS FIRST BOSTON CORPORATION


By:Thomas R. Osborne
   ----------------------------
   Vice President

SALOMON BROTHERS INC


By:Arthur H. Tildesley, Jr.
   ----------------------------
   Director
                                       26

                                                                       Exhibit A

                         Arizona Public Service Company

                                   ("Company")

                         Medium Term Notes, Series _____

                   Due Nine Months or More from Date of Issue

                                 TERMS AGREEMENT
                                 ---------------


                                                              ___________, 199__


Arizona Public Service Company
400 North 5th Street
Phoenix, AZ   85004
Attention:  Treasurer

Ladies and Gentlemen:

                  We  offer  to  purchase,  on  and  subject  to the  terms  and
conditions of the  Distribution  Agreement  filed as an exhibit to the Company's
registration statement on Form S-3 (No. 333-15379)  ("Distribution  Agreement"),
the following Securities ("Notes") on the following terms:

                  Title:

                  Currency or Currency Units:

                  Stated Maturity:

                  Principal Amount:

                  Public Offering  Price: [___%,  subject  to  change   by   the
                                            undersigned  --    The   Distributor
                                            proposes to reoffer the above  Notes
                                            from  time  to time at market prices
                                            prevailing at the time of  sale,  at
                                            prices  related  to  such prevailing
                                            market  prices  or   at   negotiated
                                            prices.]

                  Original Issue Discount Security:  Yes ____  No ____

                  Denominations:

                  Purchase  Price (to be paid in immediately  available  funds):
                  ___% [, plus accrued interest,  if any, from the Trade Date to
                  the Settlement Date]

                  Underwriting  Discount or Commission received from the Company
                  (%):

                  Proceeds to Company (If different from Public  Offering Price)
                  (%):

                  In the case of Fixed Rate  Notes,  the  interest  rate and, if
                  different   from  the  dates  set  forth  in  the   Prospectus
                  Supplement,   the   Interest   Payment   Date  or  Dates   and
                  corresponding Regular Record Date or Dates:

                  In the case of Floating Rate Notes, the interest rate formula,
                  Initial  Interest  Rate,  the Index  Maturity,  the  Spread or
                  Spread  Multiplier (if any),  the maximum or minimum  Interest
                  rate  limitations  (if any),  the Interest  Reset  Dates,  the
                  Interest  Determination  Dates,  the  Calculation  Agent,  the
                  Calculation  Dates, the Interest Payment Dates and the Regular
                  Record Dates, in each case to the extent applicable:















                  Optional Redemption (option of the Company):

                           Redemption Date(s):
                           Redemption Prices(s)(%):
                           Notice Period:

                  Optional Redemption (option of the Holder):

                           Redemption Date(s):
                           Redemption Price(s)(%):
                           Notice Period:

                  Sinking Fund:

                  Other Terms:

                  Trade Date:

                  Settlement Date (Issue Date):
                                      -2-

                        *       *        *        *        *

Details for Settlement
- ----------------------

                  (Additional   Purchase  Information  --  to  be  completed  by
Distributor, if desired, to the extent available):

                           Exact  name in  which  the  Note or  Notes  are to be
                           registered ("registered owner"):

                           Exact address of registered  owner and, if different,
                           the  address  for  delivery of notices and payment of
                           principal and any premium and interest:

                           Taxpayer identification number of registered owner:

                           Principal   amount   of  each   Note  in   authorized
                           denominations to be delivered to registered owner:

                           Exchange rate applicable to purchase Foreign Currency
                           Notes to be paid for in U.S. dollars:

                        *       *        *        *        *

                  Our  agreement to purchase  the Notes  hereunder is subject to
the conditions set forth in the Distribution Agreement, including the conditions
set forth in  paragraphs  (d), (e), (f), (g), (h), and (i) of Section 5 thereof.
If  for  any  reason  the  purchase  by the  undersigned  of  the  Notes  is not
consummated  other than because of a default by the  undersigned or a failure to
satisfy a condition  set forth in clause  (ii),  (iii) or (v) of Section 5(c) of
the Distribution Agreement,  the Company shall reimburse the undersigned for all
out-of-pocket expenses reasonably incurred by the undersigned in connection with
the offering of the Notes and not otherwise  required to be reimbursed  pursuant
to Section 4 of the Distribution Agreement.
                                      -3-

                  Unless the  undersigned  has  received  notification  from the
Company  within [one  Business Day (as defined in the  Distribution  Agreement)]
that the  Company  does not  agree to the terms set  forth  herein,  this  Terms
Agreement shall constitute an agreement  between the Company and the undersigned
for the sale and  purchase  of the Notes upon the terms set forth  herein and in
the Distribution Agreement.

                                         Very truly yours,

                                         [NAME OF DISTRIBUTOR]



                                         By ____________________________________


Accepted and agreed to 
as of the date set forth above.

ARIZONA PUBLIC SERVICE COMPANY



By _________________________________

                                                                       EXHIBIT B




                          COMMISSION SCHEDULE TO FOLLOW





                                                                       EXHIBIT C


                            ADMINISTRATIVE PROCEDURES
                            -------------------------


                  The medium-term notes due nine months or more from their issue
date (the  "Notes"),  are to be offered on a continuing  basis by Arizona Public
Service  Company  (the  "Company").  CS First  Boston  Corporation  and  Salomon
Brothers   Inc   (individually,    a   "Distributor"   and   collectively,   the
"Distributors"), have each agreed to use reasonable efforts to solicit offers to
purchase the Notes. Each Distributor may, but will not be obligated to, purchase
Notes as principal  for its own account.  The Notes are being sold pursuant to a
Distribution Agreement,  dated November 19, 1996 (the "Distribution Agreement"),
between  the  Company and the  Distributors,  and will be issued  pursuant to an
Indenture, dated as of November 15, 1996 (the "Indenture"),  between the Company
and The Bank of New York, as trustee (the  "Trustee").  Subject to Article 14 of
the Indenture,  until the Release Date, the Notes will be secured by one or more
series of the Company's first mortgage bonds issued and delivered by the Company
to the Trustee for the Notes.  On the Release  Date,  the Notes will cease to be
secured by the Company's first mortgage  bonds,  will become  unsecured  general
obligations  of the  Company,  and will rank on a parity  with  other  unsecured
senior indebtedness of the Company.  For a description of the terms of the Notes
and the offering and sale thereof,  see the sections  entitled  "Description  of
Senior Notes", "Special Provisions Relating to Foreign Currency Notes", "Plan of
Distribution  of Senior  Notes"  and  "Glossary"  in the  Prospectus  Supplement
relating to the Notes,  dated  ________,  19__,  attached hereto and hereinafter
referred  to  as  the  "Prospectus   Supplement",   and  the  sections  entitled
"Description  of Senior  Notes"  and "Plan of  Distribution"  in the  Prospectus
relating to the Notes, dated November 18, 1996,  attached hereto and hereinafter
referred  to as the  "Prospectus."  Defined  terms used  herein but not  defined
herein shall have the meanings  assigned to them in the Distribution  Agreement,
the Prospectus or the Prospectus Supplement.

                  The Notes will be represented either by Global Notes delivered
to The  Depository  Trust  Company  ("DTC") or its nominee  and  recorded in the
book-entry system maintained by DTC or such nominee  ("Book-Entry  Notes") or by
certificates  issued in  definitive  form  delivered  to the Holders  thereof or
Persons  designated  by such  Holders  ("Certificated  Notes").  Notes for which
interest is  calculated  on the basis of a fixed  interest  rate are referred to
herein as "Fixed Rate Notes".  Notes for which  interest is calculated at a rate
or rates  determined  by reference  to an interest  rate formula are referred to
herein as "Floating Rate Notes".

                  Notes may be  issued  as  Indexed  Notes,  with the  principal
amount  payable at  Maturity,  the  amount of  interest  payable on an  Interest
Payment Date, or both,  to be  determined by reference to  currencies,  currency
units, commodity prices, financial or non-financial indices or other factors, as
indicated in the  applicable  Pricing  Supplement.  Holders of Indexed Notes may
receive a  principal  amount at Maturity  that is greater  than or less than the
face amount of such Notes  depending upon the fluctuation of the relative value,
rate or price of the specified  index.  Specific  information  pertaining to the
method for  determining the principal  amount payable at Maturity,  a historical
comparison of the relative  value,  rate or price of the specified index and 

the face amount of the Indexed Note and any additional tax  considerations  will
be described in the applicable Pricing Supplement.

                  Notes  which are issued at a price  lower  than the  principal
amount  thereof and which provide that upon  redemption or  acceleration  of the
Maturity thereof an amount less than the principal  thereof shall become due and
payable are referred to herein as "Original Issue Discount  Notes".  For special
provisions relating to Original Issue Discount Notes and other Notes issued at a
discount for tax purposes,  see the section  entitled "United States Taxation --
Original Issue Discount" in the Prospectus.

                  Unless   otherwise   indicated  in  the   applicable   Pricing
Supplement,  the Notes will be  denominated  in U.S.  dollars  and  payments  of
principal  of and any  premium  and  interest  on the Notes will be made in U.S.
dollars in the manner indicated in the Prospectus and the Prospectus Supplement.
Notes  denominated  in one or more  currencies or currency units other than U.S.
dollars  are  referred  to herein  as  "Foreign  Currency  Notes".  For  special
provisions  relating  to  Foreign  Currency  Notes,  see the  sections  entitled
"Special  Provisions  Relating  to  Foreign  Currency  Notes" in the  Prospectus
Supplement . Specific  information  concerning the foreign  currency or currency
unit in which a  particular  Foreign  Currency  Note is  denominated,  including
historical  exchange  rates and a  description  of the currency and any exchange
controls,  shall  be  contained  in  a  Pricing  Supplement  to  the  Prospectus
Supplement reflecting the terms of such Note.

                  Notes which  provide  that  amounts  payable by the Company in
respect  of  principal  of or any  premium  or  interest  on the Notes  shall be
determined  by  reference to the value,  rate or price of one or more  specified
indices,  are  referred  to  herein as  "Indexed  Notes".  Specific  information
pertaining  to the method for  determining  the  principal  amounts  payable,  a
historical  comparison  of the  value,  rate or  price of the  specified  index,
indices  and the face  amount of the Indexed  Note and  certain  additional  tax
considerations will be described in the applicable Pricing Supplement.

                  Administrative  procedures  and specific terms of the offering
are explained below. Part I indicates  procedures  applicable to all Notes; Part
II indicates specific  procedures for Certificated Notes; and Part III indicates
specific  procedures for Book-Entry  Notes.  Administrative  and  record-keeping
responsibilities will be handled for the Company by its Treasury Department. The
Company  will  advise the  Distributors  in writing  of those  persons  handling
administrative  responsibilities  with whom the  Distributors are to communicate
regarding offers to purchase Notes and the details of their delivery.


PART I:  PROCEDURES APPLICABLE TO ALL NOTES
- -------------------------------------------

Issue Date
- ----------

                  Each Note will be dated the date of its  authentication.  Each
Note will also bear an  original  issue  date (the  "Issue  Date")  which,  with
respect  to any  such  Note (or  portion  thereof),  
                                      C-2

shall mean the date of its original issuance and shall be specified therein. The
Issue Date will remain the same for all Notes subsequently issued upon transfer,
exchange or substitution of a Note, regardless of their dates of authentication.


Price to Public
- ---------------

                  Except as otherwise  specified in a Pricing  Supplement,  each
Note will be issued at 100% of principal amount.


Maturities; Minimum Purchase;
- -----------------------------

                  Each Note will mature on a date, selected by the purchaser and
agreed to by the  Company,  which  will be at least nine  months  from its Issue
Date.  The  minimum  aggregate  amount  of Notes  which  may be  offered  to any
purchaser will be $100,000.


Interest Payments
- -----------------

                  Interest on each  interest-bearing Note will be calculated and
paid in the manner  described in such Note and in the Prospectus  Supplement and
the applicable Pricing Supplement.  Unless otherwise set forth therein, interest
on Fixed Rate Notes (including  interest for partial periods) will be calculated
on the basis of a 360-day  year of twelve  30-day  months and will not accrue on
the 31st day of any month.  Interest on Floating Rate Notes, except as otherwise
set forth therein,  will be calculated on the basis of actual days elapsed and a
year of 360 days,  except that in the case of a Floating Rate Note for which the
Base Rate is the Treasury Rate,  interest will be calculated on the basis of the
actual number of days in the year.

                  On the fifth Market Day  immediately  preceding  each Interest
Payment  Date,  the Trustee  will  furnish the Company  with the total amount of
interest  payments  (whether  in U.S.  dollars or other  currencies  or currency
units) to be made on such  Interest  Payment  Date.  The  Trustee  will  provide
monthly, to the Company's Treasury  Department,  a list of the principal and any
premium and interest to be paid on Notes maturing in the next succeeding  month.
The Trustee will assume responsibility for withholding taxes on interest paid as
required by law.


Redemption/Repayment
- --------------------

                  If indicated in the applicable Pricing  Supplement,  the Notes
of a particular tenor will be subject to redemption in whole or in part (subject
to applicable minimum denominations),  at the option of the Company on and after
an initial redemption date as set forth in the applicable Pricing Supplement and
in the applicable Note. The redemption price will be set forth in the applicable
Pricing Supplement and in the applicable Note.
                                      C-3

                  If indicated in the applicable Pricing  Supplement,  the Notes
of a particular  tenor will be subject to repayment at the option of the Holders
thereof in  accordance  with the terms of the Notes on a  repayment  date as set
forth in the  applicable  Pricing  Supplement  and in the  applicable  Note. The
repayment date or dates and repayment  price will be set forth in the applicable
Pricing Supplement and in the applicable Note. The applicable Pricing Supplement
will also indicate whether a Note is subject to an optional extension beyond its
Stated  Maturity  or  whether  the term of all or any  portion  of a Note may be
extended beyond its initial Stated Maturity Date.


Procedures for Establishing the Terms of the Notes
- --------------------------------------------------

                  The Company and the  Distributors  will  discuss  from time to
time the price of and the  rates to be borne by the Notes  that may be sold as a
result of the solicitation of offers by the  Distributors.  Once any Distributor
has  recorded  any  indication  of interest  in Notes upon  certain  terms,  and
communicated  with the  Company,  if the  Company  plans to  accept  an offer to
purchase  Notes upon such terms,  it will  prepare a Pricing  Supplement  to the
Prospectus, as then amended or supplemented,  reflecting the terms of such Notes
and,  after  approval  from the  Distributors,  will arrange to have the Pricing
Supplement filed with, or transmitted by a means reasonably calculated to result
in filing with, the Securities and Exchange Commission (the "Commission")via the
Commission's Edgar System pursuant to Rule 424 under the Securities Act of 1933,
as amended  (the  "Act").*  The  Company  will  supply at least 10 copies of the
Prospectus,   as  then  amended  or  supplemented,   and  bearing  such  Pricing
Supplement,  to  the  Distributor  who  presented  the  offer  (the  "Presenting
Distributor").  No  settlements  with respect to Notes upon such terms may occur
prior to such  transmitting  or filing and the  Distributors  will not, prior to
such transmitting or filing, mail confirmations to customers who have offered to
purchase  Notes upon such  terms.  After  such  transmitting  or filing,  sales,
mailing of  confirmations  and  settlements may occur with respect to Notes upon
such terms, subject to the provisions of "Delivery of Prospectus" below.



- --------------------------
*        If clause (b)(3) of Rule 424 is  applicable,  such filing shall be made
         no later than the fifth  business day following the earlier of the date
         of determination of the settlement  information  described below or the
         date such Pricing  Supplement is first used. If clause (b)(2) or (b)(5)
         of Rule 424 is applicable,  such filing shall be made no later than the
         second business day following the earlier of the date of  determination
         of the settlement  information  or the date such Pricing  Supplement is
         first used.
                                      C-4

                  Pricing  Supplements  delivered  to the  Distributors  will be
         sent:

                  if sent to CS First Boston Corporation:

                           CS First Boston Corporation
                           Five World Trade Center, 7th Floor
                           New York, New York  10048
                           Attn:  Joan Bryan
                           Telephone:  (212) 322-5105


                  if sent to Salomon Brothers Inc:

                           Salomon Brothers Inc
                           8800 Hidden River Parkway
                           Tampa, Florida, 33637
                           Attn:  Enrique Castro
                           Telephone:  (813) 558-7165
                                       (813) 558-4123

                  If the Company  decides to post rates and a decision  has been
reached  to change  interest  rates,  the  Company  will  promptly  notify  each
Distributor.  Each Distributor will forthwith suspend solicitation of purchases.
At that time,  the  Distributors  will  recommend and the Company will establish
rates to be so "posted."  Following  establishment  of posted rates and prior to
the   transmitting  or  filing  described  in  the  preceding   paragraph,   the
Distributors may only record  indications of interest in purchasing Notes at the
posted rates.  Once any  Distributor  has recorded any indication of interest in
Notes at the posted  rates and  communicated  with the  Company,  if the Company
plans  to  accept  an  offer at the  posted  rate,  it will  prepare  a  Pricing
Supplement   reflecting   such  posted  rate  and,   after   approval  from  the
Distributors,  will arrange to have 10 copies of the Pricing  Supplement,  filed
with, or  transmitted by means  reasonably  calculated to result in filing with,
the Commission via the  Commission's  Edgar System pursuant to Rule 424(b) under
the Act and will supply at least 10 copies of the Prospectus, as then amended or
supplemented,   and  bearing  such  Pricing   Supplement,   to  the   Presenting
Distributor.  No  settlements  at the  posted  rates  may  occur  prior  to such
transmitting or filing and the Distributors will not, prior to such transmitting
or filing, mail confirmations to customers who have offered to purchase Notes at
the  posted  rates.  After  such  transmitting  or  filing,  sales,  mailing  of
confirmations and settlements may resume, subject to the provisions of "Delivery
of Prospectus" below.

                  Outdated Pricing Supplements,  and copies of the Prospectus to
which  they  are  attached  (other  than  those  retained  for  files),  will be
destroyed.
                                      C-5

Suspension of Solicitation:  Amendment or Supplement
- ----------------------------------------------------

                  As provided  in the  Distribution  Agreement,  the Company may
instruct the  Distributors to suspend  solicitation of offers to purchase at any
time,  and upon  receipt  of at least one Market  Day's  prior  notice  from the
Company,  the Distributors will each forthwith suspend  solicitation  until such
time as the Company has advised them that solicitation of offers to purchase may
be resumed.

                  If the  Distributors  receive  the  notice  from  the  Company
contemplated by Section 3(b) or 4(b) of the  Distribution  Agreement,  they will
promptly suspend  solicitation and will only resume  solicitation as provided in
the Distribution Agreement. If the Company is required, pursuant to Section 4(b)
of the Distribution  Agreement,  to prepare an amendment or supplement,  it will
promptly furnish each Distributor with the proposed amendment or supplement;  if
the Company  decides to amend or supplement  the  Registration  Statement or the
Prospectus  relating to the Notes, it will promptly advise each  Distributor and
will  furnish each  Distributor  with the proposed  amendment or  supplement  in
accordance  with the  terms of the  Distribution  Agreement.  The  Company  will
promptly file such  amendment or  supplement  with the  Commission,  provide the
Distributors  with copies of any such  amendment or  supplement,  confirm to the
Distributors  that  such  amendment  or  supplement  has  been  filed  with  the
Commission and advise the Distributors that solicitation may be resumed.

                  Any such suspension shall not affect the Company's obligations
under the Distribution Agreement;  and in the event that at the time the Company
suspends  solicitation  of offers to purchase  there shall be any offers already
accepted by the Company  outstanding for  settlement,  the Company will have the
sole  responsibility  for  fulfilling  such  obligations.  The  Company  will in
addition promptly advise the Distributors and the Trustee if such offers are not
to be settled  and if copies of the  Prospectus  as in effect at the time of the
suspension  may not be  delivered  in  connection  with the  settlement  of such
offers.


Acceptance of Offers
- --------------------

                  Each  Distributor  will  promptly  advise the Company,  at its
option orally or in writing, of each reasonable offer to purchase Notes received
by it, other than those rejected by such  Distributor.  Each Distributor may, in
its discretion reasonably exercised,  without notice to the Company,  reject any
offer  received by it, in whole or in part. The Company will have the sole right
to accept offers to purchase Notes and may reject any such offer, in whole or in
part.  If the  Company  accepts or rejects  an offer,  in whole or in part,  the
Company will promptly so notify the Presenting Distributor.


Confirmation
- ------------

                  For each accepted offer, the Presenting Distributor will issue
a  confirmation,  in writing,  to the  purchaser,  with a copy to the  Company's
Treasury Department, setting forth the 
                                      C-6

Purchase  Information  (as defined  under II below with respect to  Certificated
Notes and III below with respect to  Book-Entry  Notes) and delivery and payment
instructions; provided, however, that, in the case of the confirmation issued to
the purchaser,  no confirmation shall be delivered to the purchaser prior to the
delivery of the Prospectus referred to below.


Determination of Settlement Date
- --------------------------------

                  The receipt of immediately  available  funds by the Company in
payment for a Note and (i) in the case of Certificated Notes, the authentication
and issuance of such Note and (ii) in the case of Book-Entry Notes, entry by the
Presenting  Distributor  of an SDFS  deliver  order  through  DTC's  Participant
Terminal System to credit such Note to the account of a Participant  purchasing,
or acting for the  purchase  of, such Note,  shall,  with  respect to such Note,
constitute  "settlement."  All offers accepted by the Company will be settled on
the third Market Day next  succeeding the date of acceptance,  unless  otherwise
agreed by the purchaser and the Company.  The settlement date shall be specified
upon receipt of an offer to purchase. Prior to 3:00 p.m., New York City time, on
the Market Day prior to the  settlement  date,  the Company  will  instruct  the
Trustee to authenticate  and deliver the Notes no later than 2:15 p.m., New York
City time, on the settlement date except as to Book-entry Notes described below.


Delivery of Prospectus
- ----------------------

                  A  copy  of  the  Prospectus  as  most  recently   amended  or
supplemented on the date of delivery  thereof (except as provided below) must be
delivered to a purchaser  prior to or together  with the earlier of the delivery
of (i) the written confirmation  provided for above, and (ii) any Note purchased
by such  purchaser.  (For this  purpose,  entry of an SDFS deliver order through
DTC's  Participant  Terminal  System  to  credit  a  Note  to the  account  of a
Participant  purchasing,  or acting for the purchaser of, a Note shall be deemed
to  constitute  delivery  of such  Note.)  The  Company  shall  ensure  that the
Presenting  Distributor  receives copies of the Prospectus and each amendment or
supplement  thereto  (including   appropriate   Pricing   Supplements)  in  such
quantities and within such time limits as will enable the Presenting Distributor
to deliver such  confirmation  or Note to a purchaser as  contemplated  by these
procedures  and in compliance  with the first  sentence of this  paragraph.  If,
since the date of acceptance of a purchaser's  offer,  the Prospectus shall have
been  supplemented  solely to reflect any sale of Notes on terms  different from
those  agreed to between the Company  and such  purchaser  or a change in posted
rates not applicable to such  purchaser,  such  purchaser  shall not receive the
Prospectus  as  supplemented  by such new  supplement,  but  shall  receive  the
Prospectus as  supplemented to reflect the terms of the Notes being purchased by
such  purchaser and otherwise as most recently  amended or  supplemented  on the
date of delivery of the Prospectus.
                                      C-7

Authenticity of Signatures
- --------------------------

                  The Company will cause the Trustee to furnish the Distributors
from  time  to time  with  the  specimen  signatures  of  each of the  Trustee's
officers,  employees  or  agents  who have been  authorized  by the  Trustee  to
authenticate  Notes, but no Distributor will have any obligation or liability to
the Company or the Trustee in respect of the  authenticity  of the  signature of
any officer,  employee or agent of the Company or the Trustee on any Note or the
Global Note (as defined in Part III).

Advertising Expenses
- --------------------

                  The Company will determine with the Distributors the amount of
advertising that may be appropriate in offering the Notes.  Advertising expenses
will be paid by the Company.


Market Day
- ----------

                  "Market  Day"  means  (a) with  respect  to any  Note  (unless
otherwise  provided in this  definition),  any day that is a Business Day in The
City of New York,  (b) with respect to LIBOR Notes only, any Business Day in New
York that is also a London  Market  Day,  (c) with  respect to Foreign  Currency
Notes (other than Foreign Currency Notes  denominated in European Currency Units
("ECUs"))  only,  any day  that is a  Business  Day  both in New York and in the
principal financial center in the country of the Specified Currency and (d) with
respect  to  Foreign  Currency  Notes  denominated  in ECU,  any date  that is a
Business Day in The City of New York that is designated as an ECU settlement day
by the ECU Banking  Association in Paris or otherwise  generally regarded in the
ECU interbank market as a day in which payments in ECU are made.


Trustee Not to Risk Funds
- -------------------------

                  Nothing  herein shall be deemed to require the Trustee to risk
or expend its own funds in connection with any payment made to the Company,  the
Distributors,  DTC or any Holder of a Note,  it being  understood by all parties
that payments made by the Trustee to the Company,  the Distributors,  DTC or any
Holder of a Note shall be made only to the extent that funds are provided to the
Trustee for such purpose.


PART II:  ADMINISTRATIVE PROCEDURES FOR CERTIFICATED NOTES
- ----------------------------------------------------------

Form and Denominations
- ----------------------

                  The   Certificated   Notes  shall  be  issued  only  in  fully
registered form in denominations of $1,000 and integral multiples of $1,000, or,
in the case of Foreign  Currency Notes, in such minimum  denomination,  not less
than the equivalent of $1,000, and such greater
                                      C-8

denomination or  denominations  in excess thereof,  as shall be set forth in the
applicable Pricing Supplement.


Transfers and Exchanges
- -----------------------

                  A Certificated  Note may be presented for transfer or exchange
at the principal  corporate trust office of the Trustee in The City of New York.
Certificated  Notes will be  exchangeable  for other  Certificated  Notes of any
authorized  denominations  and of like tenor and in a like  aggregate  principal
amount,  upon  surrender  of  the  Certificated  Notes  to be  exchanged  at the
corporate  trust  office  of  the  Trustee.   Certificated  Notes  will  not  be
exchangeable for Book-Entry Notes.


Payment at Maturity
- -------------------

                  Upon presentation of each  Certificated Note at Maturity,  the
Trustee  (or a duly  authorized  Paying  Agent)  will pay the  principal  amount
thereof,  together with any premium and accrued  interest due at Maturity.  Such
payment  will  be  made  in  immediately  available  funds,  provided  that  the
Certificated  Note is  presented in time for the Paying Agent to make payment in
such funds in accordance  with its normal  procedures.  The Company will provide
the Trustee (and any Paying  Agent) with funds  available  for immediate use for
such purpose.  Certificated  Notes presented at Maturity will be canceled by the
Trustee as provided in the Indenture. For special provisions relating to Foreign
Currency Notes, see the section entitled "Special Provisions Relating to Foreign
Currency Notes" in the Prospectus Supplement.


Details for Settlement
- ----------------------

                  For each offer for Certificated Notes accepted by the Company,
the  Presenting   Distributor  shall  communicate  to  the  Company's   Treasury
Department  prior to 3:00 p.m.,  New York City time, on the Market Day preceding
the  settlement  date,  by telephone,  telex,  facsimile  transmission  or other
acceptable means, the following information (the "Purchase Information"):

                  1.       Exact  name in  which  the  Note or  Notes  are to be
                           registered ("registered owner").

                  2.       Exact address of registered  owner and, if different,
                           the  address  for  delivery,  notices  and payment of
                           principal and any premium and interest.

                  3.       Taxpayer identification number of registered owner.

                  4.       Principal   amount   of  each   Note  in   authorized
                           denominations to be delivered to registered owner.
                                      C-9

                  5.       Stated Maturity of each Note.

                  6.       In the case of Fixed Rate Notes, the interest rate of
                           each Note,  whether such Note is an  Amortizing  Note
                           and, if so, the amortization schedule; in the case of
                           Floating  Rate Notes or Indexed  Notes,  the interest
                           rate  formula,  the Spread or Spread  Multiplier  (if
                           any), the maximum or minimum interest rate limitation
                           (if any), the Calculation or Determination Agent, the
                           Calculation  Dates,  the Initial  Interest  Rate, the
                           Interest Payment Dates, the Regular Record Dates, the
                           Index Maturity,  the Interest Determination Dates and
                           the Interest Reset Dates, in each case, to the extent
                           applicable with respect to each Note.

                  7.       Redemption  and/or repayment  provisions,  if any, of
                           each Note.

                  8.       Trade date of each Note.

                  9.       Settlement date (Issue Date) of each Note.

                  10.      Presenting  Distributor's  commission  (to be paid in
                           the form of a discount from the proceeds  remitted to
                           the Company upon settlement).

                  11.      Price.

                  12.      Currency or currency unit in which each Note is to be
                           denominated  and exchange rate applicable to purchase
                           Foreign  Currency  Notes  to  be  paid  for  in  U.S.
                           dollars.

                  13.      Original issue discount, if any.

                  14.      Whether  the  Company  has the  option to extend  the
                           Stated  Maturity of the Note and if so, the Extension
                           Period,  the Election Dates and the Final Maturity of
                           such Note.

                  15.      Whether the Note is a Renewable  Note, and if it is a
                           Renewable  Note,  the Initial  Maturity  Date and the
                           Final Maturity Date.

                  16.      In  the  case  of an  Indexed  Note,  any  additional
                           information  relevant to determination of the amounts
                           of  principal  (and  premium,  if  any)  or  interest
                           payable.
                                      C-10

                  17.      Any additional applicable terms of each Note.

                  The Issue Date of, and the settlement  date for,  Certificated
Notes will be the same.  Before  accepting  any offer to  purchase  Certificated
Notes to be settled in less than three  Market  Days,  the Company  shall verify
that the Trustee will have adequate time to prepare and authenticate the Notes.

                  Immediately  after  receiving  the  details for each offer for
Certificated  Notes from the  Presenting  Distributor,  the Company will,  after
recording the details and any necessary  calculations,  communicate the Purchase
Information by telephone,  telex,  facsimile  transmission  or other  acceptable
means, to the Trustee. Each such instruction given by the Company to the Trustee
shall constitute a continuing  representation and warranty by the Company to the
Trustee and the  Distributors  that (i) the  issuance and delivery of such Notes
have been duly and validly  authorized by the Company and (ii) such Notes,  when
completed,  authenticated and delivered,  shall constitute the valid and legally
binding obligation of the Company.  The Trustee will assign to and enter on each
Note a transaction number.

                  The Company will deliver to the Trustee a pre-printed four-ply
packet for such  Certificated  Note,  which  packet will  contain the  following
documents in forms that have been approved by the Company,  the Distributors and
the Trustee:

         1.       Certificated Note with customer confirmation.

         2.       Stub One - For the Trustee.

         3.       Stub Two - For the Presenting Distributor.

         4.       Stub Three - For the Company.

                  Prior to 2:00  p.m.,  New York City  time,  on the  Settlement
Date,  the Trustee will complete such  Certificated  Note and will  authenticate
such  Certificated Note and deliver it (with the confirmation) and Stubs One and
Two to such  Distributor,  and such Distributor will acknowledge  receipt of the
Note by stamping or otherwise  marking Stub One and returning it to the Trustee.
The Trustee will send Stub Three to the Company by first-class mail.


Settlement; Note Deliveries and Cash Payment
- --------------------------------------------

                  The Company will deliver to the Trustee at the commencement of
the  program  and  from  time to  time  thereafter  a  supply  of duly  executed
Certificated  Notes with  pre-printed  control numbers adequate to implement the
program. Upon the receipt of appropriate documentation and instructions from the
Company in accordance with the applicable Officers' Certificate and verification
thereof,  the Trustee  will cause the  Certificated  Notes to be  completed  and
authenticated and hold the Certificated Notes for delivery against payment.
                                      C-11

                  The  Trustee  will  deliver the  Certificated  Notes (with the
confirmation)  and Stubs One and Two, in accordance with  instructions  from the
Company,  to the  Presenting  Distributor.  If the  Distributor  is placing such
Certificated  Notes as agent,  such delivery will be made for the benefit of the
purchaser only against receipt and the Presenting  Distributor  will acknowledge
receipt of the Notes through a broker's receipt. Such delivery will be made only
against such acknowledgement of receipt and evidence that instructions have been
given for  payment  to the  Company  at such  account  of the  Company as it may
specify in writing,  in immediately  available  funds, of an amount equal to the
principal  amount  of  such  Notes,  less  the  applicable  commission.  If  the
Presenting Distributor in any instance advances its own funds, the Company shall
not use any of the proceeds of such sale to acquire securities.

                  If the  Distributor  is  placing  such  Certificated  Notes as
agent,  the Presenting  Distributor,  as the Company's  agent,  will deliver the
Notes  (with the  written  confirmation  provided  for  above) to the  purchaser
thereof  against  payment  therefor by such purchaser in  immediately  available
funds.

                  Delivery of any confirmation or Note to a purchaser thereof by
a  Distributor,  acting as agent or principal,  will be made in compliance  with
"Delivery of Prospectus" in Part I above.

                  Certificated Notes delivered to the Distributors will be sent:

                  If sent to CS First Boston Corporation

                           CS First Boston Corporation
                           Five World Trade Center
                           7th Floor
                           New York, New York  10048
                           Attn:  Paul Riley


                  If sent to Salomon Brothers Inc

                           Salomon Brothers Inc
                           c/o The Bank of New York
                           Dealer Clearance Department
                           1 Wall Street, 3rd Floor
                           New York, New York   10005
                           Attn:  For the account of Salomon Brothers Inc


Fails (Distributor Acting as Agent)
- -----------------------------------

                  In the event that a purchaser shall fail to accept delivery of
and make payment for a Certificated  Note on the settlement date, the Presenting
Distributor will notify the Trustee and the 
                                      C-12

Company, by telephone,  confirmed in writing. If such Certificated Note has been
delivered to the Presenting Distributor,  as the Company's agent, the Presenting
Distributor  shall return such Note to the Trustee.  If funds have been advanced
for the purchase of such Note,  the Trustee  will,  immediately  upon receipt of
such Note,  debit the account of the Company for the amount so advanced  and the
Trustee shall refund the payment  previously made by the Presenting  Distributor
in  immediately  available  funds.  Such payments will be made on the settlement
date, if possible,  and in any event not later than the Market Day following the
settlement  date.  If the fail shall have occurred for any reason other than the
failure of the Presenting Distributor to provide the Purchase Information to the
Company  or to  provide  a  confirmation  to the  purchaser,  the  Company  will
reimburse the Presenting  Distributor on an equitable  basis for its loss of the
use of funds  during the period  when the funds were  credited to the account of
the Company.

                  Immediately upon receipt of the  Certificated  Note in respect
of which the fail  occurred,  the Trustee will make  appropriate  entries in its
records to reflect the fact that the Note was never  issued and the Note will be
canceled and disposed of as provided in the Indenture.


PART III:  ADMINISTRATIVE PROCEDURES FOR BOOK-ENTRY NOTES
- ---------------------------------------------------------

                  In connection with the  qualification  of the Book-Entry Notes
for  eligibility  in the book-entry  system  maintained by DTC, the Trustee will
perform the custodial,  document control and administrative  functions described
below, in accordance with its obligations under a Letter of Representations (the
"Letter")  from the Company and the Trustee to DTC dated as of  _______________,
and a Medium-Term Note Certificate  Agreement  between the Trustee and DTC dated
as of ____________, and its obligations as a participant in DTC, including DTC's
Same-Day Funds Settlement System ("SDFS").


Form, Denominations and Registration
- ------------------------------------

                  All  Book-Entry  Notes of the same  tenor and  having the same
Issue Date, will be represented  initially by a single note (a "Global Note") in
fully registered form without coupons. Unless otherwise stated in the applicable
Pricing  Supplement,  Book-Entry Notes will represent Notes  denominated in U.S.
dollars.  Global  Notes will be issued in  denominations  of $1,000 and integral
multiples thereof.  Global Notes will be denominated in principal amounts not in
excess of  $150,000,000.  If one or more  Book-Entry  Notes  having an aggregate
principal  amount in excess of  $150,000,000  would,  but not for the  preceding
sentence,  be represented by a single Global Note,  then one Global Note will be
issued to represent each  $150,000,000  principal amount of such Book-Entry Note
or Notes and an additional Global Note will be issued to represent any remaining
principal  amount of such  Book-Entry Note or Notes. In such a case, each of the
Global Notes  representing  such  Book-Entry note or Notes shall be assigned the
same CUSIP  number.  Each Global Note will be  registered  in the name of Cede &
Co.,  as  nominee  for  DTC,  on the  Security  Register  maintained  under  the
Indenture.  The beneficial  owner of a Book-Entry  Note (or one or more indirect
participants  in DTC  designated  by  such  owner)  will  designate  one or more
participants  in DTC (with respect to such Note, the  "Participants")  to act as
agent  or  
                                      C-13

agents for such owner in connection  with the  book-entry  system  maintained by
DTC, and DTC will record in book-entry  form, in  accordance  with  instructions
provided by such Participants, a credit balance with respect to such Note in the
account of such Participants. The ownership interest of such beneficial owner in
such Note will be recorded  through the records of such  Participants or through
the separate records of such Participants and one or more indirect  participants
in DTC.


CUSIP Numbers
- -------------

                  The  Company has  arranged  with the CUSIP  Service  Bureau of
Standard & Poor's  Corporation  (the "CUSIP Service Bureau") for the reservation
of a series of CUSIP numbers (including tranche numbers), such series consisting
of  approximately  900 CUSIP  numbers and relating to Global Notes  representing
Book-Entry  Notes.  The Company has  obtained  from the CUSIP  Service  Bureau a
written list of such reserved  CUSIP numbers and has delivered it to the Trustee
and DTC.  The Trustee  will assign  CUSIP  numbers  serially to Global  Notes as
described  below  under  "Details  for  Settlement."  DTC will  notify the CUSIP
Service Bureau  periodically  of the CUSIP numbers that the Trustee has assigned
to Global Notes. The Trustee will notify the Company at the time when fewer than
100 of the reserved CUSIP numbers remain unassigned to the Global Notes; and the
Company will reserve  additional  CUSIP  numbers for  assignment to Global Notes
representing Book-Entry Notes. Upon obtaining such additional CUSIP numbers, the
Company shall deliver a list of such additional CUSIP numbers to the Trustee and
DTC.


Transfers and Exchanges for the Purpose of Consolidation
- --------------------------------------------------------

                  Transfers of a Book-Entry  Note will be  accomplished  by book
entries made by DTC and, in turn, by Participants (and, in certain cases, one or
more indirect  participants  in DTC) acting on behalf of beneficial  transferors
and transferees of such Note.

                  The Trustee may upon notice to the Company  deliver to DTC and
the CUSIP Service  Bureau at any time a written notice (a copy of which shall be
attached to the Global Note  resulting  from such  exchange)  specifying (i) the
CUSIP numbers of two or more outstanding Global Notes that represent  Book-Entry
Notes of the same tenor and having the same Issue Date,  and for which  interest
(if any) has been paid to the same date,  (ii) a date  occurring at least thirty
days after such written  notice is delivered and at least thirty days before the
next Interest  Payment Date (if any) for such Notes,  on which such Global Notes
shall be exchanged  for a single  replacement  Global Note and (iii) a new CUSIP
number to be assigned to such  replacement  Global Note.  Upon receipt of such a
notice,  DTC will send to its  Participants  (including  the  Trustee) a written
reorganization  notice to the effect that such exchange will occur on such date.
Prior to the  specified  exchange  date,  the Trustee  will deliver to the CUSIP
Service  Bureau a written  notice  setting  forth such exchange date and the new
CUSIP number and stating that, as of such  exchange  date,  the CUSIP numbers of
the  Global  Notes to be  exchanged  will no longer be valid.  On the  specified
exchange  date,  the Trustee will exchange such Global Notes for a single Global
Note bearing the new CUSIP number and the CUSIP numbers of the exchanged  Global
                                      C-14

Notes will, in accordance with CUSIP Service Bureau procedures,  be canceled and
not immediately reassigned.


Notice of Interest Payment Dates and Regular Record Dates
- ---------------------------------------------------------

                  To the extent  then known,  on the first  Market Day of March,
June,  September,  and  December of each year,  the Trustee  will deliver to the
Company and DTC a written list of Record Dates and Interest  Payment  Dates that
will occur with respect to Floating Rate  Book-Entry  Notes during the six-month
period beginning on such first Market Day.


Payments of Principal and Interest
- ----------------------------------

                  (a)  Payments of Interest  Only.  Promptly  after each Regular
Record Date,  the Trustee  will deliver to the Company and DTC a written  notice
specifying by CUSIP number the amount of interest to be paid on each Global Note
on the  following  Interest  Payment  Date (other than an Interest  Payment Date
coinciding  with  Maturity)  and the total of such  amounts.  The  Company  will
confirm with the Trustee the amount payable on each Global Note on such Interest
Payment  Date.  DTC will confirm the amount  payable on each Global Note on such
Interest Payment Date by reference to the daily or weekly bond reports published
by Standard & Poor's Corporation.  The Company will pay to the Trustee the total
amount of interest due on such  Interest  Payment Date (other than at Maturity),
and the  Trustee  will pay such amount to DTC at the times and in the manner set
forth below under "Manner of Payment".

                  (b) Payments at Stated Maturity.  On or about the first Market
Day of each  month,  the Trustee  will  deliver to the Company and DTC a written
list of principal  and  interest to be paid on each Global Note  maturing in the
following  month.  The Company,  the Trustee and DTC will confirm the amounts of
such principal and interest payments with respect to each such Global Note on or
about the fifth Market Day  preceding  the Stated  Maturity of such Global Note.
The Company will pay to the Trustee,  as the paying agent,  the principal amount
of such Global Note,  together with interest due at such Stated  Maturity.  Upon
surrender  of a Global  Note,  the Trustee  will pay such  amounts to DTC at the
times and in the manner set forth below under "Manner of Payment". If any Stated
Maturity of a Global Note representing Book-Entry Notes is not a Market Day, the
payment due on such day shall be made on the next  succeeding  Market Day and no
interest  shall accrue on such payment for the period from and after such Stated
Maturity. Promptly after payment to DTC of the principal and any interest due at
the Stated  Maturity of such Global  Note,  the Trustee  will cancel such Global
Note and return such Global Note to the Company in accordance  with the terms of
the Indenture.

                  (c) Payment upon Redemption.  The Trustee will comply with the
terms of the Letter with regard to  redemptions  or repayments of the Book-Entry
Notes.  In the case of  Book-Entry  Notes stated by their terms to be redeemable
prior to Stated  Maturity,  [at least 60 calendar days before the date fixed for
redemption] (the "Redemption Date"), the Company shall notify the Trustee of the
Company's  election to redeem such Book-Entry  Notes in whole or in part and the
                                      C-15

principal  amount  of such  Book-Entry  Notes  to be so  redeemed.  At  least 30
calendar days but not more than 60 calendar days prior to the  Redemption  Date,
the Trustee shall notify DTC of the Company's election to redeem such Book-Entry
Notes.  The Trustee shall notify the Company and DTC of the CUSIP numbers of the
particular  Book-Entry  Notes to be  redeemed  either  in whole or in part.  The
Company,  the Trustee and DTC will confirm the amounts of such principal and any
premium and interest  payable with  respect to each such  Book-Entry  Note on or
about the fifth Market Day  preceding  the  Redemption  Date of such  Book-Entry
Note.  The Company will pay the  Trustee,  in  accordance  with the terms of the
Indenture,  the amount  necessary  to redeem  each such  Book-Entry  Note or the
applicable  portion of each such  Book-Entry  Note.  The  Trustee  will pay such
amount to DTC at the times and in the manner set forth  herein.  Promptly  after
payment  to DTC of the  amount due on the  Redemption  Date for such  Book-Entry
Note,  the Trustee shall cancel any such  Book-Entry  Note redeemed in whole and
shall deliver it to the Company with an  appropriate  debit advice.  If a Global
Note is to be  redeemed in part,  the  Trustee  will cancel such Global Note and
issue a Global Note which shall  represent the remaining  portion of such Global
Note and shall bear the CUSIP number of the canceled Global Note.

                  (d) Manner of Payment.  The total amount of any  principal and
interest due on Global Notes on any Interest  Payment Date or at Maturity  shall
be paid by the Company to the  Trustee in  immediately  available  funds on such
date available for use as of 9:30 A.M. New York City time. The Company will make
such payment on such Global Notes by wire  transfer to the Trustee.  The Company
will confirm instructions  regarding payment in writing to the Trustee. Prior to
1:00 p.m., New York City time, on each date of Maturity of a Book-Entry  Note or
as soon as possible  thereafter,  the Trustee will pay by separate wire transfer
(using Fedwire message entry instructions in a form previously specified by DTC)
to an account at the Federal  Reserve Bank of New York  previously  specified by
DTC in funds  available  for  immediate  use by DTC,  each  payment of principal
(together with interest  thereon) due at Maturity on Book-Entry  Notes.  On each
Interest  Payment Date,  interest payment shall be made to DTC in same day funds
in  accordance  with  existing   arrangements   between  the  Trustee  and  DTC.
Thereafter,  on each  such  date,  DTC will  pay,  in  accordance  with its SDFS
operating  procedures  then in  effect,  such  amounts  in funds  available  for
immediate use to the respective Participants in whose names the Book-Entry Notes
represented  by  such  Global  Notes  are  recorded  in  the  book-entry  system
maintained  by DTC.  NEITHER THE  COMPANY NOR THE TRUSTEE  SHALL HAVE ANY DIRECT
RESPONSIBILITY  OR LIABILITY FOR THE PAYMENT BY DTC TO SUCH  PARTICIPANTS OF THE
PRINCIPAL OF AND ANY PREMIUM AND INTEREST ON THE BOOK-ENTRY NOTES.

                  (e) Withholding  Taxes. The amount of any taxes required under
applicable  law to be withheld  from any interest  payment on a Book-Entry  Note
will be determined and withheld by the Participant,  indirect participant in DTC
or other person  responsible for forwarding  payments and materials  directly to
the beneficial owner of such Note.

Details for Settlement
- ----------------------

                  For each offer for  Book-Entry  Notes accepted by the Company,
the  Presenting   Distributor  shall  communicate  to  the  Company's   Treasury
Department  prior to 11:00  a.m.,  New 
                                      C-16

York City time, on the first Market Day after the sale date (or on the sale date
if such sale is to be settled  within  one Market  Day),  by  telephone,  telex,
facsimile transmission or other acceptable means, the following information (the
"Purchase Information"):

                  1.       Principal amount of the Notes.

                  2.       Stated Maturity of the Notes.

                  3.       In the case of Fixed Rate Notes, the interest rate of
                           the Notes  and  whether  such  Note is an  Amortizing
                           Note, and, if so, the amortization  schedule;  in the
                           case  of  Floating  Rate  Notes  or  Indexed   Notes,
                           interest   rate   formula,   the   Spread  or  Spread
                           Multiplier (if any), the maximum or minimum  Interest
                           rate   limitation  (if  any),   the   Calculation  or
                           Determination   Agent,  the  Calculation  Dates,  the
                           Initial  Interest Rate,  the Interest  Payment Dates,
                           the Regular  Record Dates,  the Index  Maturity,  the
                           Interest  Determination  Dates and the Interest Reset
                           Dates,  in each case, to the extent  applicable  with
                           respect to the Notes.

                  4.       Redemption  and/or repayment  provisions,  if any, of
                           the Notes.

                  5.       Trade date of the Notes.

                  6.       Settlement date (Issue Date) of the Notes.

                  7.       Presenting  Distributor's  commission  (to be paid in
                           the form of a discount from the proceeds  remitted to
                           the Company upon settlement).

                  8.       Price.

                  9.       Currency or  currency  unit in which the Notes are to
                           be  denominated   and  exchange  rate  applicable  to
                           purchase  Foreign  Currency  Notes  payable  in  U.S.
                           dollars.

                  10.      Original issue discount, if any.

                  11.      Whether  the  Company  has the  option to extend  the
                           Stated  Maturity of the Note and if so, the Extension
                           Period,  the Election Dates and the Final Maturity of
                           such Note.
                                      C-17

                  12.      Whether the Note is a Renewable  Note, and if it is a
                           Renewable  Note,  the Initial  Maturity  Date and the
                           Final Maturity Date.

                  13.      In  the  case  of an  Indexed  Note,  any  additional
                           information  relevant to determination of the amounts
                           of  principal  (and  premium,  if  any)  or  interest
                           payable.

                  14.      Any additional applicable terms of the Notes.

                  The Issue Date of,  and the  settlement  date for,  Book-Entry
Notes will be the same. Before accepting any offer to purchase  Book-Entry Notes
to be settled in less than three Market Days,  the Company shall verify that the
Trustee will have adequate time to prepare and authenticate the Global Notes.

                  If the initial  interest rate for a Floating  Rate  Book-Entry
Note has not  been  determined  at the time  that  the  foregoing  procedure  is
completed,  the procedures  described in the following two  paragraphs  shall be
completed as soon as such rate has been  determined but no later than 12:00 Noon
and 2:00 p.m.,  New York City time, as the case may be, on the Market Day before
the settlement date.

                  Immediately  after  receiving  the  details for each offer for
Book-Entry Notes from the Presenting  Distributor and in any event no later than
12:00 Noon,  New York City time, on the first Market Day after the sale date (or
on the sale date if such sale is to be  settled  within  one  Market  Day),  the
Company  will,  after  recording  the  details and any  necessary  calculations,
communicate the Purchase Information by telephone, telex, facsimile transmission
or other acceptable  means, to the Trustee.  Each such instruction  given by the
Company to the Trustee shall constitute a continuing representation and warranty
by the Company to the Trustee and the  Distributors  that (i) the  issuance  and
delivery of such Note have been duly and validly  authorized  by the Company and
(ii) such Note, when duly issued, shall constitute the valid and legally binding
obligation of the Company.

                  Immediately after receiving the Purchase  Information from the
Company  and in any event no later  than 2:00 P.M.,  New York City time,  on the
first  Market Day after the sale date (or on the sale date if such sale is to be
settled  within one Market  Day),  the Trustee will assign a CUSIP number to the
Global Note representing such Book-Entry Note and will telephone the Company and
advise the Company of such CUSIP number and, as soon  thereafter as practicable,
the Company shall notify the Presenting  Distributor  of such CUSIP number.  The
Trustee will enter a pending deposit message through DTC's Participant  Terminal
System,  providing  settlement  information  to  DTC  (which  shall  route  such
information  to Standard & Poor's  Corporation).  Standard & Poor's  Corporation
will use the information  received in the pending deposit message to include the
amount of any  interest  payable and certain  other  information  regarding  the
related Global Note in the appropriate  daily or weekly bond report published by
Standard & Poor's Corporation.
                                      C-18

Settlement; Global Note Delivery and Cash Payment
- -------------------------------------------------

                  The Company will deliver to the Trustee at the commencement of
the program and from time to time  thereafter a supply of duly  executed  Global
Notes with pre-printed  control numbers adequate to implement the program.  Upon
the receipt of appropriate  documentation  and instructions  from the Company in
accordance with the applicable Officers'  Certificate and verification  thereof,
the Trustee will cause the Global Note to be  completed  and  authenticated  and
hold the Global Note for delivery against payment.

                  Prior to 10:00  a.m.,  New York City time,  on the  Settlement
Date, the Trustee will enter  instructions  through DTC's  Participant  Terminal
System, using the function MT II, and DTC will credit such Note to the Trustee's
participant  account  at DTC.  Prior to 2:00 p.m.,  New York City  time,  on the
Settlement  Date,  the Trustee will enter an SDFD deliver  order  through  DTC's
Participant  Terminal  System  instructing  DTC to (i)  debit  such  Note to the
Trustee's   participant   account  and  credit  such  Note  to  the   Presenting
Distributor's  participant  account and (ii) debit the Presenting  Distributor's
settlement  account and credit the  Trustee's  settlement  account for an amount
equal  to the  price  of  such  Note  less  such  Distributor's  commission  (in
accordance with SDFS operating procedures in effect on the Settlement Date). The
entry of such a deliver order shall constitute a representation  and warranty by
the Trustee to DTC that (i) the Global Note  representing  such  Book-Entry Note
has been executed,  delivered and  authenticated and (ii) the Trustee is holding
such Global Note pursuant to the relevant Medium-Term Note Certificate Agreement
between the Trustee and DTC.

                  Prior to 2:00 p.m., New York City time, on the Settlement Date
unless  the  Presenting  Distributor  is the end  purchaser  of such  Note,  the
Presenting   Distributor   will  enter  an  SDFS  deliver  order  through  DTC's
Participant  Terminal  System  instructing  DTC (i) to debit  such  Note to such
Distributor's  participant  account  and  credit  such  Note to the  Participant
accounts  of the  Participants  with  respect to such Note and (ii) to debit the
settlement  accounts of such  Participants and credit the settlement  account of
such  Distributor  for an amount equal to the price of such Note (in  accordance
with SDFS operating procedures in effect on the settlement date).

                  Transfers of funds are subject to extension in accordance with
any extension of Fedwire closing  deadlines and in the other events specified in
the SDFS operating procedures in effect on the settlement date.

                  The Trustee,  upon confirming receipt of such funds, will wire
transfer the amount transferred to the Trustee, in funds available for immediate
use,  for the  account of the  Company,  to account no.  __________  at [name of
bank], [location of bank] (ABA No. __________).

                  Unless the Presenting Distributor is the end purchaser of such
Note, such  Distributor  will confirm the purchase of such Note to the purchaser
either  by  transmitting  to  the  Participants  with  respect  to  such  Note a
confirmation order or orders through DTC's  institutional  delivery system or by
mailing a written confirmation to such purchaser.
                                      C-19

Fails
- -----

                  If  settlement  of  a  Book-Entry   Note  is   rescheduled  or
cancelled,  the  Company  shall  notify the  Trustee,  and upon  receipt of such
notice,  the Trustee will deliver to DTC,  through  DTC's  Participant  Terminal
System,  a  cancellation  message to such effect by no later than 2:00 p.m., New
York City time, on the Market Day immediately preceding the scheduled settlement
date.

                  If the Agent or Trustee has not entered an SDFS deliver  order
with  respect to a Book-Entry  Note,  then upon  written  request  (which may be
evidenced by telecopy transmission) of the Company, the Trustee shall deliver to
DTC, through DTC's Participant  Terminal System, as soon as practicable,  but no
later  than 2:00  p.m.,  New York City time,  on any  Market  Day, a  withdrawal
message instructing DTC to debit such Note to the Trustee's participant account.
DTC will process the withdrawal message, provided that the Trustee's participant
account  contains a principal amount of the Global Note  representing  such Note
that is at least  equal to the  principal  amount to be debited.  If  withdrawal
messages are processed with respect to all the Book-Entry Notes represented by a
Global  Note,  the  Trustee  will  mark  such  Global  Note  "cancelled",   make
appropriate entries in the Trustee's records and send such cancelled Global Note
to the  Company.  The CUSIP  number  assigned  to such  Global  Note  shall,  in
accordance  with  CUSIP  Service  Bureau   procedures,   be  cancelled  and  not
immediately reassigned. If withdrawal messages are processed with respect to one
or more, but not all, of the Book-Entry Notes  represented by a Global Note, the
Trustee will exchange such Global Note for two Global Notes,  one of which shall
represent such Book-Entry Note or Notes and shall be cancelled immediately after
issuance and the other of which shall represent the remaining  Book-Entry  Notes
previously  represented by the surrendered  Global Note and shall bear the CUSIP
number of the surrendered Global Note.

                  If the purchase  price for any  Book-Entry  Note is not timely
paid to the Participants  with respect to such Note by the beneficial  purchaser
thereof (or a person, including an indirect participant in DTC, acting on behalf
of such purchaser),  such Participants and, in turn, the Presenting  Distributor
may enter an SDFS  deliver  order  through  DTC's  Participant  Terminal  System
debiting such Note to such Distributor's  participant account and crediting such
Note  [free] to the  participant  account of the  Trustee  and shall  notify the
Trustee and the Company thereof.  Thereafter,  the Trustee, (i) will immediately
notify the  Company,  once the  Trustee  has  confirmed  that such Note has been
credited to its participant  account, and the Company shall immediately transfer
by Fedwire (in  immediately  available  funds) to the Presenting  Distributor an
amount  equal to the  price  of such  Note  which  was  previously  sent by wire
transfer to the account of the Company maintained at  _______________,  and (ii)
the Trustee will  deliver the  withdrawal  message and take the related  actions
described in the  preceding  paragraph.  Such debits and credits will be made on
the  settlement  date,  if  possible,  and in any event not later than 5:00 p.m.
__________ time on the following Market Day. If the fail shall have occurred for
any reason  other than  failure of the  Presenting  Distributor  to provide  the
Purchase  Information  to  the  Company  or to  provide  a  confirmation  to the
purchaser, the Company will reimburse the 
                                      C-20

Presenting  Distributor  on an equitable  basis for its loss of the use of funds
during the period when the funds were credited to the account of the Company.

                  Notwithstanding the foregoing, upon any failure to settle with
respect to a Book-Entry  Note,  DTC may take any actions in accordance  with its
SDFS operating  procedures  then in effect.  In the event of a failure to settle
with respect to one or more, but not all, of the  Book-Entry  Notes to have been
represented  by a Global Note,  the Trustee will provide for the  authentication
and issuance of a Global Note  representing  the other  Book-Entry Notes to have
been  represented by such Global Note and will make  appropriate  entries in its
records.

                         Arizona Public Service Company

                                   ("Company")

                           Medium-Term Notes, Series A

                   Due Nine Months or More from Date of Issue

                                 TERMS AGREEMENT
                                 ---------------


                                                               November 19, 1996


Arizona Public Service Company
400 North 5th Street
Phoenix, AZ   85004
Attention:  Treasurer

Ladies and Gentlemen:

                  We  offer  to  purchase,  on  and  subject  to the  terms  and
conditions of the  Distribution  Agreement  filed as an exhibit to the Company's
registration statement on Form S-3 (No. 333-15379)  ("Distribution  Agreement"),
the following Securities ("Notes") on the following terms:

                  Title:  6-3/4% Senior Notes Due 2006

                  Currency or Currency Units:  United States dollars

                  Stated Maturity:  November 15, 2006

                  Principal Amount:  $100,000,000

                  Public Offering Price:  99.639%

                  Original Issue Discount Security:  Yes ____  No    X

                  Denominations:  $1,000 and integral multiples thereof.

                  Purchase  Price (to be paid in immediately  available  funds):
                  98.989%, plus accrued interest, if any, from November 15, 1996
                  to the Settlement Date

                  Underwriting  Discount or Commission received from the Company
                  (%): .650%

                  Proceeds to Company (If different from Public  Offering Price)
                  (%): 98.989%

                  Optional  Redemption (option of the Company):  As described in
                  the Prospectus Supplement, dated November 19, 1996 (the "First
                  Prospectus Supplement")

                  Optional Redemption (option of the Holder):  None

                  Sinking Fund:  None

                  Other Terms:  None

                  Trade Date:  November 19, 1996

                  Settlement Date (Issue Date):  November 22, 1996

                        *       *        *        *        *

Details for Settlement
- ----------------------

                           Exact  name in  which  the  Note or  Notes  are to be
                           registered ("registered owner"): Cede & Co.

                           Principal   amount   of  each   Note  in   authorized
                           denominations  to be delivered to  registered  owner:
                           $100,000,000

                        *       *        *        *        *

                  Our  agreement to purchase  the Notes  hereunder is subject to
the  conditions  set  forth  in  the  Distribution   Agreement,   including  the
conditions,  and the delivery of the documents,  set forth in Section 5 thereof.
If  for  any  reason  the  purchase  by the  undersigned  of  the  Notes  is not
consummated  other than because of a default by the  undersigned or a failure to
satisfy a condition  set forth in clause  (ii),  (iii) or (v) of Section 5(c) of
the Distribution Agreement,  the Company shall reimburse the undersigned for all
out-of-pocket expenses reasonably incurred by the undersigned in connection with
the offering of the Notes and not otherwise  required to be reimbursed  pursuant
to Section 4 of the Distribution Agreement.

                  The Notes will have the terms described in the Prospectus,  as
amended  on  November  19,  1996  and   supplemented  by  the  First  Prospectus
Supplement,  referred  to in  Section  2(a) of the  Distribution  Agreement.  No
Pricing Supplement will be prepared for the Notes.

                  The  principal  amount  of  Notes  to  be  purchased  by  each
Distributor is as specified in the First Prospectus Supplement.  The obligations
of the Distributors to purchase the Notes shall be several and not joint.

                  Notwithstanding the terms of the Distribution  Agreement,  the
Company and the Distributors agree that the Company shall prepare the Prospectus
Supplement  within a reasonable  time following the Settlement Date (Issue Date)
for the Senior Notes and, on the date of the filing thereof with the Commission,
to hold the Closing Date specified in Section 3(e) of the Distribution Agreement
at 8:00 A.M., Phoenix time, on such date. On such date,  Exhibits A and C to the
Distribution  Agreement  will be  completed  and  attached  to the  Distribution
Agreement.

                  If  any   Distributor   or   Distributors   default  in  their
obligations to purchase Notes pursuant to this Terms Agreement and the principal
amount of the Notes that such defaulting  Distributor or Distributors agreed but
failed to purchase is ten percent (10%) or less of the  principal  amount of the
Notes, the Distributors  may make  arrangements  satisfactory to the Company for
the purchase of the Notes by other persons,  including any of the  Distributors,
but if no such  arrangements  are made by the  Settlement  Date (Issue Date) the
nondefaulting  Distributors shall be obligated severally, in proportion to their
respective  commitments  hereunder,  to purchase the Notes that such  defaulting
Distributor or Distributors agreed but failed to purchase. If any Distributor or
Distributors so default and the aggregate principal amount of Notes with respect
to which such default or defaults 
                                      -2-

occur is more than the above described amount and  arrangements  satisfactory to
the remaining  Distributors  and the Company for purchase of such Notes by other
persons are not made within  thirty-six  hours  after such  default,  this Terms
Agreement will  terminate  without  liability on the part of any  non-defaulting
Distributor,  except as provided in Section 9 of the Distribution  Agreement. As
used in this  Terms  Agreement,  the  term  "Distributor"  includes  any  person
substituted for a Distributor under this paragraph.  Nothing herein will relieve
a defaulting Distributor from liability for its default.

                  CS First Boston  Corporation is acting as  representative  for
the Distributors specified in the First Prospectus Supplement in connection with
the offering to which this Terms  Agreement  relates,  and any action under this
Terms  Agreement  taken by CS First Boston  Corporation in such capacity will be
binding upon the Distributors to which this Terms Agreement relates.

                  This Terms Agreement shall constitute an agreement between the
Company  and the  undersigned  for the sale and  purchase  of the Notes upon the
terms set forth herein and in the Distribution Agreement.

                                        Very truly yours,

                                        CS FIRST BOSTON CORPORATION
                                        SALOMON BROTHERS INC
                                        PAINEWEBBER INCORPORATED

                                        By:  CS FIRST BOSTON CORPORATION



                                        By Thomas R. Osborne
                                           ----------------------------
                                           Vice President

Accepted and agreed to 
as of the date set forth above.

ARIZONA PUBLIC SERVICE COMPANY


By Nancy E. Newquist
   -----------------------
   Treasurer
                                      -3-