1
                        --------------------------------


                       THE WASHINGTON WATER POWER COMPANY


                                       TO


                            WILMINGTON TRUST COMPANY,

                                     TRUSTEE


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


                                    INDENTURE


                           DATED AS OF JANUARY 1, 1997


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



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

   2

                       THE WASHINGTON WATER POWER COMPANY


         RECONCILIATION AND TIE BETWEEN TRUST INDENTURE ACT OF 1939 AND
                     INDENTURE, DATED AS OF JANUARY 1, 1997
         --------------------------------------------------------------


    TRUST INDENTURE ACT SECTION                         INDENTURE SECTION(S)
    ---------------------------                         --------------------

    Section 310(a)(1) . . . . . . . . . . . . . . . . .     809
               (a)(2) . . . . . . . . . . . . . . . . .     809
               (a)(3) . . . . . . . . . . . . . . . . .     Not Applicable
               (a)(4) . . . . . . . . . . . . . . . . .     Not Applicable
               (b)    . . . . . . . . . . . . . . . . .     808, 810
    Section 311(a)    . . . . . . . . . . . . . . . . .     813
               (b)    . . . . . . . . . . . . . . . . .     813
               (c)    . . . . . . . . . . . . . . . . .     813
    Section 312(a)    . . . . . . . . . . . . . . . . .     901
               (b)    . . . . . . . . . . . . . . . . .     901
               (c)    . . . . . . . . . . . . . . . . .     901
    Section 313(a)    . . . . . . . . . . . . . . . . .     902
               (b)    . . . . . . . . . . . . . . . . .     902
               (c)    . . . . . . . . . . . . . . . . .     902
               (d)    . . . . . . . . . . . . . . . . .     902
    Section 314(a)    . . . . . . . . . . . . . . . . .     902, 507
               (b)    . . . . . . . . . . . . . . . . .     Not Applicable
               (c)(1) . . . . . . . . . . . . . . . . .     102
               (c)(2) . . . . . . . . . . . . . . . . .     102
               (c)(3) . . . . . . . . . . . . . . . . .     Not Applicable
               (d)    . . . . . . . . . . . . . . . . .     Not Applicable
               (e)    . . . . . . . . . . . . . . . . .     102
    Section 315(a)    . . . . . . . . . . . . . . . . .     801, 803
               (b)    . . . . . . . . . . . . . . . . .     802
               (c)    . . . . . . . . . . . . . . . . .     801
               (d)    . . . . . . . . . . . . . . . . .     801
               (e)    . . . . . . . . . . . . . . . . .     714
    Section 316(a)    . . . . . . . . . . . . . . . . .     712, 713
               (a)(1)(A). . . . . . . . . . . . . . . .     702, 712
               (a)(1)(B). . . . . . . . . . . . . . . .     713
               (a)(2) . . . . . . . . . . . . . . . . .     Not Applicable
               (b)    . . . . . . . . . . . . . . . . .     708
    Section 317(a)(1) . . . . . . . . . . . . . . . . .     703
               (a)(2) . . . . . . . . . . . . . . . . .     705
               (b)    . . . . . . . . . . . . . . . . .     503
    Section 318(a)    . . . . . . . . . . . . . . . . .     107
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                                TABLE OF CONTENTS

                                                                         PAGE
                                                                         ----


          Recital of the Company  . . . . . . . . . . . . . . . . . . .   1


                                   ARTICLE ONE

               DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

                        SECTION 101.  General Definitions . . . . . . .   1
                          Act . . . . . . . . . . . . . . . . . . . . .   2
                          Affiliate . . . . . . . . . . . . . . . . . .   2
                          Authenticating Agent  . . . . . . . . . . . .   2
                          Authorized Officer  . . . . . . . . . . . . .   2
                          Board of Directors  . . . . . . . . . . . . .   2
                          Board Resolution  . . . . . . . . . . . . . .   2
                          Business Day  . . . . . . . . . . . . . . . .   2
                          Commission  . . . . . . . . . . . . . . . . .   3
                          Company . . . . . . . . . . . . . . . . . . .   3
                          Company Order or Company Request  . . . . . .   3
                          Corporate Trust Office  . . . . . . . . . . .   3
                          corporation . . . . . . . . . . . . . . . . .   3
                          Declaration . . . . . . . . . . . . . . . . .   3
                          Discount Security . . . . . . . . . . . . . .   3
                          Interest  . . . . . . . . . . . . . . . . . .   3
                          Dollar or $ . . . . . . . . . . . . . . . . .   3
                          Eligible Obligations  . . . . . . . . . . . .   3
                          Event of Default  . . . . . . . . . . . . . .   4
                          Fair Value  . . . . . . . . . . . . . . . . .   4
                          Governmental Authority  . . . . . . . . . . .   4
                          Government Obligations  . . . . . . . . . . .   4
                          Guarantee . . . . . . . . . . . . . . . . . .   4
                          Holder  . . . . . . . . . . . . . . . . . . .   4
                          Indenture . . . . . . . . . . . . . . . . . .   4
                          Independent Expert's Certificate  . . . . . .   4
                          Institutional Trustee . . . . . . . . . . . .   5
                          Interest Payment Date . . . . . . . . . . . .   5
                          Maturity  . . . . . . . . . . . . . . . . . .   5
                          Notice of Default . . . . . . . . . . . . . .   5
                          Officer's Certificate . . . . . . . . . . . .   5
                          Opinion of Counsel  . . . . . . . . . . . . .   5
                          Outstanding . . . . . . . . . . . . . . . . .   5
                          Paying Agent  . . . . . . . . . . . . . . . .   6
                          Periodic Offering . . . . . . . . . . . . . .   6
                          Person  . . . . . . . . . . . . . . . . . . .   7
                          Place of Payment  . . . . . . . . . . . . . .   7
                          Predecessor Security  . . . . . . . . . . . .   7
                          Redemption Date . . . . . . . . . . . . . . .   7
                          Redemption Price  . . . . . . . . . . . . . .   7
                          Regular Record Date . . . . . . . . . . . . .   7
                          Required Currency . . . . . . . . . . . . . .   7
                          Responsible Officer . . . . . . . . . . . . .   7
                          Securities  . . . . . . . . . . . . . . . . .   7
                          Security Register . . . . . . . . . . . . . .   7
                          Security Registrar  . . . . . . . . . . . . .   7
                          Senior Indebtedness . . . . . . . . . . . . .   7
                          Special Record Date . . . . . . . . . . . . .   8
                          Stated Interest Rate  . . . . . . . . . . . .   8
                          Stated Maturity . . . . . . . . . . . . . . .   8
                          Successor Corporation . . . . . . . . . . . .   8
                          Tranche . . . . . . . . . . . . . . . . . . .   8
                          Trust Indenture Act . . . . . . . . . . . . .   8
                          Trust Securities  . . . . . . . . . . . . . .   8
                          Trustee . . . . . . . . . . . . . . . . . . .   8
                          United States . . . . . . . . . . . . . . . .   9
                          Unpaid Interest . . . . . . . . . . . . . . .   9
                          Washington Water Power Trust  . . . . . . . .   9
               SECTION 102.  Compliance Certificates and Opinions . . .   9
               SECTION 103.  Content and Form of Documents Delivered
                             to Trustee . . . . . . . . . . . . . . . .  10
               SECTION 104.  Acts of Holders  . . . . . . . . . . . . .  11
               SECTION 105.  Notices, Etc. to Trustee and Company . . .  13
               SECTION 106.  Notice to Holders of Securities; Waiver  .  13

   4


               SECTION 107.  Conflict with Trust Indenture Act  . . . .  14
               SECTION 108.  Effect of Headings and Table of Contents .  14
               SECTION 109.  Successors and Assigns . . . . . . . . . .  14
               SECTION 110.  Separability Clause  . . . . . . . . . . .  14
               SECTION 111.  Benefits of Indenture  . . . . . . . . . .  14
               SECTION 112.  Governing Law  . . . . . . . . . . . . . .  15
               SECTION 113.  Legal Holidays . . . . . . . . . . . . . .  15


                                  ARTICLE TWO

                                 SECURITY FORMS

               SECTION 201.  Forms Generally  . . . . . . . . . . . . .  15
               SECTION 202.  Form of Trustee's Certificate of
                             Authentication . . . . . . . . . . . . . .  16

                                 ARTICLE THREE

                                 THE SECURITIES

               SECTION 301.  Amount Unlimited; Issuable in Series . . .  16
               SECTION 302.  Denominations  . . . . . . . . . . . . . .  20
               SECTION 303.  Execution, Dating, Certificate of
                             Authentication . . . . . . . . . . . . . .  20
               SECTION 304.  Temporary Securities . . . . . . . . . . .  23
               SECTION 305.  Registration, Registration of Transfer
                             and Exchange . . . . . . . . . . . . . . .  24
               SECTION 306.  Mutilated, Destroyed, Lost and Stolen
                             Securities . . . . . . . . . . . . . . . .  25
               SECTION 307.  Payment of Interest; Interest Rights
                             Preserved  . . . . . . . . . . . . . . . .  26
               SECTION 308.  Persons Deemed Owners  . . . . . . . . . .  27
               SECTION 309.  Cancellation by Security Registrar . . . .  27
               SECTION 310.  Computation of Interest  . . . . . . . . .  28
               SECTION 311.  Payment to Be in Proper Currency . . . . .  28

                                  ARTICLE FOUR

                            REDEMPTION OF SECURITIES

               SECTION 401.  Applicability of Article . . . . . . . . .  28
               SECTION 402.  Election to Redeem; Notice to Trustee  . .  29
               SECTION 403.  Selection of Securities to Be Redeemed . .  29
               SECTION 404.  Notice of Redemption . . . . . . . . . . .  30
               SECTION 405.  Securities Payable on Redemption Date  . .  31
               SECTION 406.  Securities Redeemed in Part  . . . . . . .  31

                                  ARTICLE FIVE

                                   COVENANTS

               SECTION 501.  Payment of Securities. . . . . . . . . . .  32
               SECTION 502.  Maintenance of Office or Agency  . . . . .  32

   5


               SECTION 107.  Conflict with Trust Indenture Act  . . . .  14
               SECTION 108.  Effect of Headings and Table of Contents .  14
               SECTION 109.  Successors and Assigns . . . . . . . . . .  14
               SECTION 110.  Separability Clause  . . . . . . . . . . .  14
               SECTION 111.  Benefits of Indenture  . . . . . . . . . .  14
               SECTION 112.  Governing Law  . . . . . . . . . . . . . .  15
               SECTION 113.  Legal Holidays . . . . . . . . . . . . . .  15


                                  ARTICLE TWO

                                 SECURITY FORMS

               SECTION 201.  Forms Generally  . . . . . . . . . . . . .  15
               SECTION 202.  Form of Trustee's Certificate of
                             Authentication . . . . . . . . . . . . . .  16

                                 ARTICLE THREE

                                 THE SECURITIES

               SECTION 301.  Amount Unlimited; Issuable in Series . . .  16
               SECTION 302.  Denominations  . . . . . . . . . . . . . .  20
               SECTION 303.  Execution, Dating, Certificate of
                             Authentication . . . . . . . . . . . . . .  20
               SECTION 304.  Temporary Securities . . . . . . . . . . .  23
               SECTION 305.  Registration, Registration of Transfer
                             and Exchange . . . . . . . . . . . . . . .  24
               SECTION 306.  Mutilated, Destroyed, Lost and Stolen
                             Securities . . . . . . . . . . . . . . . .  25
               SECTION 307.  Payment of Interest; Interest Rights
                             Preserved  . . . . . . . . . . . . . . . .  26
               SECTION 308.  Persons Deemed Owners  . . . . . . . . . .  27
               SECTION 309.  Cancellation by Security Registrar . . . .  27
               SECTION 310.  Computation of Interest  . . . . . . . . .  28
               SECTION 311.  Payment to Be in Proper Currency . . . . .  28

                                  ARTICLE FOUR

                            REDEMPTION OF SECURITIES

               SECTION 401.  Applicability of Article . . . . . . . . .  28
               SECTION 402.  Election to Redeem; Notice to Trustee  . .  29
               SECTION 403.  Selection of Securities to Be Redeemed . .  29
               SECTION 404.  Notice of Redemption . . . . . . . . . . .  30
               SECTION 405.  Securities Payable on Redemption Date  . .  31
               SECTION 406.  Securities Redeemed in Part  . . . . . . .  31

                                  ARTICLE FIVE

                                   COVENANTS

               SECTION 501.  Payment of Securities. . . . . . . . . . .  32
               SECTION 502.  Maintenance of Office or Agency  . . . . .  32
               SECTION 503.  Money for Securities Payments to Be Held
                             in Trust . . . . . . . . . . . . . . . . .  33
               SECTION 504.  Corporate Existence  . . . . . . . . . . .  34
               SECTION 505.  Maintenance of Properties  . . . . . . . .  34
               SECTION 506.  Waiver of Certain Covenants  . . . . . . .  35
               SECTION 507.  Annual Officer's Certificate as to
                             Compliance.  . . . . . . . . . . . . . . .  35
               SECTION 508.  Restriction on Payment of Dividends, Etc.   36
               SECTION 509.  Washington Water Power Trusts. . . . . . .  36

                                  ARTICLE SIX

                           SATISFACTION AND DISCHARGE

               SECTION 601.  Satisfaction and Discharge of Securities .  37
               SECTION 602.  Satisfaction and Discharge of Indenture  .  39
               SECTION 603.  Application of Trust Money . . . . . . . .  40

                                 ARTICLE SEVEN

                          EVENTS OF DEFAULT; REMEDIES

               SECTION 701.  Events of Default  . . . . . . . . . . . .  40
               SECTION 702.  Acceleration of Maturity; Rescission
                             and Annulment  . . . . . . . . . . . . . .  42
               SECTION 703.  Collection of Indebtedness and Suits
                             for Enforcement by Trustee . . . . . . . .  43
               SECTION 704.  Application of Money Collected . . . . . .  44
               SECTION 705.  Trustee May File Proofs of Claim . . . . .  44
               SECTION 706.  Trustee May Enforce Claims without
                             Possession of Securities . . . . . . . . .  45
               SECTION 707.  Limitation on Suits  . . . . . . . . . . .  46
               SECTION 708.  Unconditional Right of Holders to Receive
                             Principal, Premium and Interest  . . . . .  46
               SECTION 709.  Restoration of Rights and Remedies . . . .  47
               SECTION 710.  Rights and Remedies Cumulative . . . . . .  47
               SECTION 711.  Delay or Omission Not Waiver . . . . . . .  47
               SECTION 712.  Control by Holders of Securities . . . . .  47
               SECTION 713.  Waiver of Past Defaults  . . . . . . . . .  48
               SECTION 714.  Undertaking for Costs  . . . . . . . . . .  48
               SECTION 715.  Waiver of Stay or Extension Laws . . . . .  49
               SECTION 716.  Action by Holders of Certain Trust
                             Securities.  . . . . . . . . . . . . . . .  49

                                 ARTICLE EIGHT

                                  THE TRUSTEE

               SECTION 801.  Certain Duties and Responsibilities  . . .  50
               SECTION 802.  Notice of Defaults . . . . . . . . . . . .  51
               SECTION 803.  Certain Rights of Trustee  . . . . . . . .  51
               SECTION 804.  Not Responsible for Recitals or Issuance of
                             Securities . . . . . . . . . . . . . . . .  53
   6
               SECTION 805.  May Hold Securities  . . . . . . . . . . .  53
               SECTION 806.  Money Held in Trust  . . . . . . . . . . .  53
               SECTION 807.  Compensation and Reimbursement . . . . . .  53
               SECTION 808.  Disqualification; Conflicting Interests  .  54
               SECTION 809.  Corporate Trustee Required; Eligibility  .  54
               SECTION 810.  Resignation and Removal; Appointment of
                             Successor  . . . . . . . . . . . . . . . .  55
               SECTION 811.  Acceptance of Appointment by Successor . .  57
               SECTION 812.  Merger, Conversion, Consolidation or
                             Succession to Business . . . . . . . . . .  58
               SECTION 813.  Preferential Collection of Claims
                             against Company  . . . . . . . . . . . . .  58
               SECTION 814.  Appointment of Authenticating Agent  . . .  59

                                     ARTICLE NINE

                   LISTS OF HOLDERS; REPORTS BY TRUSTEE AND COMPANY

               SECTION 901.  Lists of Holders . . . . . . . . . . . . .  61
               SECTION 902.  Reports by Trustee and Company . . . . . .  61

                                   ARTICLE TEN

                        CONSOLIDATION, MERGER, CONVEYANCE
                                OR OTHER TRANSFER

               SECTION 1001.  Company may Consolidate, etc., Only
                              on Certain Terms  . . . . . . . . . . . .  62
               SECTION 1002.  Successor Corporation Substituted . . . .  63
               SECTION 1003.  Release of Company upon Conveyance or
                              Other Transfer  . . . . . . . . . . . . .  63
               SECTION 1004.  Merger into Company . . . . . . . . . . .  63
               SECTION 1005.  Transfer of Less than the Entirety  . . .  63

                                    ARTICLE ELEVEN

                             SUPPLEMENTAL INDENTURES

               SECTION 1101.  Supplemental Indentures without Consent
                              of Holders  . . . . . . . . . . . . . . .  66
               SECTION 1102.  Supplemental Indentures with Consent of
                              Holders . . . . . . . . . . . . . . . . .  68
               SECTION 1103.  Execution of Supplemental Indentures  . .  70
               SECTION 1104.  Effect of Supplemental Indentures . . . .  70
               SECTION 1105.  Conformity with Trust Indenture Act . . .  70
               SECTION 1106.  Reference in Securities to Supplemental
                              Indentures  . . . . . . . . . . . . . . .  70
               SECTION 1107.  Modification Without Supplemental
                              Indenture . . . . . . . . . . . . . . . .  70
   7

                                    ARTICLE TWELVE

                     MEETINGS OF HOLDERS; ACTION WITHOUT MEETING

               SECTION 1201.  Purposes for Which Meetings May Be
                              Called  . . . . . . . . . . . . . . . . .  71
               SECTION 1202.  Call, Notice and Place of Meetings  . . .  71
               SECTION 1203.  Persons Entitled to Vote at Meetings  . .  72
               SECTION 1204.  Quorum; Action  . . . . . . . . . . . . .  72
               SECTION 1205.  Attendance at Meetings; Determination
                              of Voting Rights; Conduct and Adjournment
                              of Meetings . . . . . . . . . . . . . . .  73
               SECTION 1206.  Counting Votes and Recording Action of
                              Meetings  . . . . . . . . . . . . . . . .  74
               SECTION 1207.  Action without Meeting  . . . . . . . . .  75

                                   ARTICLE THIRTEEN

                  IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS
                                  AND DIRECTORS

               SECTION 1301.  Liability Solely Corporate  . . . . . . .  75

                                   ARTICLE FOURTEEN

                           SUBORDINATION OF SECURITIES

               SECTION 1401.  Securities Subordinate to Senior
                              Indebtedness. . . . . . . . . . . . . . .  75
               SECTION 1402.  Payment Over of Proceeds of Securities. .  76
               SECTION 1403.  Disputes with Holders of Certain Senior
                              Indebtedness. . . . . . . . . . . . . . .  78
               SECTION 1404.  Subrogation.  . . . . . . . . . . . . . .  78
               SECTION 1405.  Obligation of the Company Unconditional.   78
               SECTION 1406.  Priority of Senior Indebtedness Upon
                              Maturity. . . . . . . . . . . . . . . . .  79
               SECTION 1407.  Trustee as Holder of Senior Indebtedness.  79
               SECTION 1408.  Notice to Trustee to Effectuate
                              Subordination.  . . . . . . . . . . . . .  79
               SECTION 1409.  Modification, Extension, etc. of Senior
                              Indebtedness. . . . . . . . . . . . . . .  80
               SECTION 1410.  Trustee Has No Fiduciary Duty to Holders
                              of Senior Indebtedness. . . . . . . . . .  80
               SECTION 1411.  Paying Agents Other Than the Trustee. . .  80
               SECTION 1412.  Rights of Holders of Senior Indebtedness
                              Not Impaired. . . . . . . . . . . . . . .  81
               SECTION 1413.  Effect of Subordination Provisions;
                              Termination.  . . . . . . . . . . . . . .  81

               Signatures . . . . . . . . . . . . . . . . . . . . . . .  82

   8
                    INDENTURE, dated as of January 1, 1997 between THE
          WASHINGTON WATER POWER COMPANY, a corporation organized and existing
          under the laws of the State of Washington (hereinafter sometimes
          called the "Company"), and Wilmington Trust Company, a Delaware
          banking corporation, trustee (hereinafter sometimes called the
          "Trustee").


                             RECITALS OF THE COMPANY

                    The Company has duly authorized the execution and delivery
          of this Indenture to provide for the issuance from time to time of
          unsecured subordinated debentures, notes or other evidences of
          indebtedness (herein called the "Securities"), to be issued in one or
          more series as contemplated herein; all acts necessary to make this
          Indenture a valid agreement of the Company have been performed.

                    NOW, THEREFORE, THIS INDENTURE WITNESSETH that, in
          consideration of the premises and of the purchase of the Securities by
          the Holders thereof, it is hereby covenanted and agreed by and between
          the Company and the Trustee that all the Securities are to be
          authenticated and delivered subject to the further covenants,
          conditions and trusts hereinafter set forth, and the Company hereby
          covenants and agrees to and with the Trustee, for the equal and
          ratable benefit of all Holders of the Securities or of series thereof,
          as follows:

                                   ARTICLE ONE

               DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

          SECTION 101.  GENERAL DEFINITIONS.

                    For all purposes of this Indenture, except as otherwise
          expressly provided or unless the context otherwise requires:

                         (a) the terms defined in this Article have the meanings
                    assigned to them in this Article and include the plural as
                    well as the singular;

                         (b) all terms used herein without definition which are
                    defined in the Trust Indenture Act, either directly or by
                    reference therein, have the meanings assigned to them
                    therein;

                         (c) all accounting terms not otherwise defined herein
                    have the meanings assigned to them in accordance with
                    generally accepted accounting principles in the United
                    States; and, except as otherwise herein expressly provided,
                    the term "generally accepted accounting principles" with
                    respect to any computation required or permitted hereunder
                    shall mean such accounting principles as are generally
                    accepted in the United States at the date of such
                    computation or, at the election of the Company from time to
                    time, at the 
   9
                    date of the execution and delivery of this
                    Indenture; provided, however, that in determining generally
                    accepted accounting principles applicable to the Company,
                    effect shall be given, to the extent required, to any order,
                    rule or regulation of any administrative agency, regulatory
                    authority or other governmental body having jurisdiction
                    over the Company; and

                         (d) the words "herein", "hereof" and "hereunder" and
                    other words of similar import refer to this Indenture as a
                    whole and not to any particular Article, Section or other
                    subdivision.

                    "ACT", when used with respect to any Holder of a Security,
          has the meaning specified in Section 104.

                    "AFFILIATE" of any specified Person means any other Person
          directly or indirectly controlling or controlled by or under direct or
          indirect common control with such specified Person. For the purposes
          of this definition, "CONTROL" when used with respect to any specified
          Person means the power to direct generally the management and policies
          of such Person, directly or indirectly, whether through the ownership
          of voting securities, by contract or otherwise; and the terms
          "CONTROLLING" and "CONTROLLED" have meanings correlative to the
          foregoing.

                    "AUTHENTICATING AGENT" means any Person (other than the
          Company or an Affiliate of the Company) authorized by the Trustee to
          act on behalf of the Trustee to authenticate the Securities of one or
          more series.

                    "AUTHORIZED OFFICER" means the Chairman of the Board, the
          President, any Vice President, the Treasurer or the Corporate
          Secretary or any other duly authorized officer, agent or
          attorney-in-fact of the Company named in an Officer's Certificate
          signed by any of such corporate officers.

                    "BOARD OF DIRECTORS" means either the board of directors of
          the Company or any committee thereof duly authorized to act in respect
          of matters relating to this Indenture.

                    "BOARD RESOLUTION" means a copy of a resolution certified by
          the Corporate Secretary or an Assistant Corporate Secretary of the
          Company to have been duly adopted by the Board of Directors and to be
          in full force and effect on the date of such certification, and
          delivered to the Trustee.

                    "BUSINESS DAY", when used with respect to a Place of Payment
          or any other particular location specified in the Securities or this
          Indenture, means any day, other than a Saturday or Sunday, which is
          not a day on which banking institutions or trust companies in such
          Place of Payment or other location are generally authorized or
          required by law, regulation 
   10
          or executive order to remain closed, except as may be otherwise
          specified as contemplated by Section 301.

                    "COMMISSION" means the Securities and Exchange Commission,
          as from time to time constituted, created under the Securities
          Exchange Act of 1934, as amended, or, if at any time after the date of
          the execution and delivery of this Indenture such Commission is not
          existing and performing the duties now assigned to it under the Trust
          Indenture Act, then the body, if any, performing such duties at such
          time.

                    "COMPANY" means the Person named as the "Company" in the
          first paragraph of this Indenture until a successor Person shall have
          become such pursuant to the applicable provisions of this Indenture,
          and thereafter "Company" shall mean such successor Person.

                    "COMPANY ORDER" or "COMPANY REQUEST" means a written request
          or order signed in the name of the Company by an Authorized Officer
          and delivered to the Trustee.

                    "CORPORATE TRUST OFFICE" means the office of the Trustee at
          which at any particular time its corporate trust business shall be
          principally administered, which office at the date of the execution
          and delivery of this Indenture is located at Rodney Square North, 1100
          North Market Street, Wilmington, Delaware 19890.

                    "CORPORATION" means a corporation, association, company,
          joint stock company or business trust.

                    "DECLARATION", with respect to a Washington Water Power
          Trust, means the Declaration of Trust establishing such trust, as the
          same shall be amended and restated from time to time.

                    "DISCOUNT SECURITY" means any Security which provides for an
          amount less than the principal amount thereof to be due and payable
          upon a declaration of acceleration of the Maturity thereof pursuant to
          Section 702. "INTEREST" with respect to a Discount Security means
          interest, if any, borne by such Security at a Stated Interest Rate.

                    "DOLLAR" or "$" means a dollar or other equivalent unit in
          such coin or currency of the United States as at the time shall be
          legal tender for the payment of public and private debts.

                    "ELIGIBLE OBLIGATIONS" means:

                         (a)  with respect to Securities denominated in
                       Dollars, Government Obligations; or

                         (b) with respect to Securities denominated in a
   11
                    currency other than Dollars or in a composite currency, such
                    other obligations or instruments as shall be specified with
                    respect to such Securities as contemplated by Section 301.

                    "EVENT OF DEFAULT" has the meaning specified in Section
          701.

                    "FAIR VALUE" has the meaning specified in Section 1005.

                    "GOVERNMENTAL AUTHORITY" means the government of the United
          States or of any State or Territory thereof or of the District of
          Columbia or of any county, municipality or other political subdivision
          of any thereof, or any department, agency, authority or other
          instrumentality of any of the foregoing.

                    "GOVERNMENT OBLIGATIONS" means:

                         (a) direct obligations of, or obligations the principal
                    of and interest on which are unconditionally guaranteed by,
                    the United States entitled to the benefit of the full faith
                    and credit thereof; and

                         (b) certificates, depositary receipts or other
                    instruments which evidence a direct ownership interest in
                    obligations described in clause (a) above or in any specific
                    interest or principal payments due in respect thereof;
                    provided, however, that the custodian of such obligations or
                    specific interest or principal payments shall be a bank or
                    trust company (which may include the Trustee or any Paying
                    Agent) subject to Federal or State supervision or
                    examination with a combined capital and surplus of at least
                    Fifty Million Dollars ($50,000,000); and provided, further,
                    that except as may be otherwise required by law, such
                    custodian shall be obligated to pay to the holders of such
                    certificates, depositary receipts or other instruments the
                    full amount received by such custodian in respect of such
                    obligations or specific payments and shall not be permitted
                    to make any deduction therefrom.

                    "GUARANTEE", with respect to a Washington Water Power Trust,
          means a guarantee agreement between the Company and the Institutional
          Trustee of such trust for the benefit of the holders from time to time
          of any of the Trust Securities of such trust.

                    "HOLDER" means a Person in whose name a Security is
          registered in the Security Register.

                    "INDENTURE" means the Indenture, dated as of January 1, 1997
          as originally executed and delivered and as it has been and may from
          time to time be amended and/or supplemented by one or 
   12
          more indentures or other instruments supplemental thereto or hereto
          entered into pursuant to the applicable provisions hereof and shall
          include the terms of particular series of Securities established as
          contemplated by Section 301.

                    "INDEPENDENT EXPERT'S CERTIFICATE" has the meaning
          specified in Section 1005.

                    "INSTITUTIONAL TRUSTEE", with respect to a Washington Water
          Power Trust, has the meaning set forth in the Declaration establishing
          such trust.

                    "INTEREST PAYMENT DATE", when used with respect to any
          Security, means the Stated Maturity of an installment of interest on
          such Security.

                    "MATURITY", when used with respect to any Security, means
          the date on which the principal of such Security or an installment of
          principal becomes due and payable as provided in such Security or in
          this Indenture, whether at the Stated Maturity, by declaration of
          acceleration, upon call for redemption or otherwise.

                    "NOTICE OF DEFAULT" has the meaning specified in
          Section 701.

                    "OFFICER'S CERTIFICATE" means a certificate signed by
          an Authorized Officer and delivered to the Trustee.

                    "OPINION OF COUNSEL" means a written opinion of counsel, who
          may be counsel for the Company or other counsel acceptable to the
          Trustee and who may be an employee or Affiliate of the Company.

                    "OUTSTANDING", when used with respect to Securities, means,
          as of the date of determination, all Securities theretofore
          authenticated and delivered under this Indenture, except:

                         (a)  Securities theretofore canceled or delivered
                    to the Trustee for cancellation;

                         (b) Securities deemed to have been paid for all
                    purposes of this Indenture in accordance with Section 601
                    (whether or not the Company's indebtedness in respect
                    thereof shall be satisfied and discharged for any other
                    purpose); and

                         (c) Securities which have been paid pursuant to Section
                    306 or in exchange for or in lieu of which other Securities
                    have been authenticated and delivered pursuant to this
                    Indenture, other than any such Securities in respect of
                    which there shall have been 
   13
                    presented to the Trustee proof satisfactory to it and the
                    Company that such Securities are held by a bona fide
                    purchaser or purchasers in whose hands such Securities are
                    valid obligations of the Company;

          provided, however, that in determining whether or not the Holders of
          the requisite principal amount of the Securities Outstanding under
          this Indenture, or the Outstanding Securities of any series or
          Tranche, have given any request, demand, authorization, direction,
          notice, consent or waiver hereunder or whether or not a quorum is
          present at a meeting of Holders of Securities,

                         (x) Securities owned by the Company or any other
                    obligor upon the Securities or any Affiliate of the Company
                    or of such other obligor (unless the Company, such obligor
                    or such Affiliate owns all Securities Outstanding under this
                    Indenture, or all Outstanding Securities of each such series
                    and each such Tranche, as the case may be, determined
                    without regard to this clause (x)) shall be disregarded and
                    deemed not to be Outstanding, except that, in determining
                    whether the Trustee shall be protected in relying upon any
                    such request, demand, authorization, direction, notice,
                    consent or waiver or upon any such determination as to the
                    presence of a quorum, only Securities which the Trustee
                    knows to be so owned shall be so disregarded; provided,
                    however, that Securities so owned which have been pledged in
                    good faith may be regarded as Outstanding if it is
                    established to the reasonable satisfaction of the Trustee
                    that the pledgee, and not the Company, any such other
                    obligor or Affiliate of either thereof, has the right so to
                    act with respect to such Securities and that the pledgee is
                    not the Company or any other obligor upon the Securities or
                    any Affiliate of the Company or of such other obligor; and

                         (y) the principal amount of a Discount Security that
                    shall be deemed to be Outstanding for such purposes shall be
                    the amount of the principal thereof that would be due and
                    payable as of the date of such determination upon a
                    declaration of acceleration of the Maturity thereof pursuant
                    to Section 702; and

          provided, further, that, in the case of any Security the principal of
          which is payable from time to time without presentment or surrender,
          the principal amount of such Security that shall be deemed to be
          Outstanding at any time for all purposes of this Indenture shall be
          the original principal amount thereof less the aggregate amount of
          principal thereof theretofore paid.

                    "PAYING AGENT" means any Person, including the Company,
          authorized by the Company to pay the principal of and premium, if 
   14
          any, or interest, if any, on any Securities on behalf of the Company.

                    "PERIODIC OFFERING" means an offering of Securities of a
          series from time to time any or all of the specific terms of which
          Securities, including without limitation the rate or rates of
          interest, if any, thereon, the Stated Maturity or Maturities thereof
          and the redemption provisions, if any, with respect thereto, are to be
          determined by the Company or its agents from time to time subsequent
          to the initial request for the authentication and delivery of such
          Securities by the Trustee, all as contemplated in Section 301 and
          clause (b) of Section 303.

                    "PERSON" means any individual, corporation, partnership,
          limited liability partnership, limited liability company, joint
          venture, trust or unincorporated organization or any Governmental
          Authority.

                    "PLACE OF PAYMENT", when used with respect to the Securities
          of any series, or any Tranche thereof, means the place or places,
          specified as contemplated by Section 301, at which, subject to Section
          502, principal of and premium, if any, and interest, if any, on the
          Securities of such series or Tranche are payable.

                    "PREDECESSOR SECURITY" of any particular Security means
          every previous Security evidencing all or a portion of the same debt
          as that evidenced by such particular Security; and, for the purposes
          of this definition, any Security authenticated and delivered under
          Section 306 in exchange for or in lieu of a mutilated, destroyed, lost
          or stolen Security shall be deemed (to the extent lawful) to evidence
          the same debt as the mutilated, destroyed, lost or stolen Security.

                    "REDEMPTION DATE", when used with respect to any Security to
          be redeemed, means the date fixed for such redemption by or pursuant
          to this Indenture.

                    "REDEMPTION PRICE", when used with respect to any Security
          to be redeemed, means the price at which it is to be redeemed pursuant
          to this Indenture.

                    "REGULAR RECORD DATE" for the interest payable on any
          Interest Payment Date on the Securities of any series means the date
          specified for that purpose as contemplated by Section 301.

                    "REQUIRED CURRENCY" has the meaning specified in
          Section 311.

                    "RESPONSIBLE OFFICER", when used with respect to the
          Trustee, means any officer of the Trustee assigned by the Trustee to
          administer its corporate trust matters.
   15
                    "SECURITIES" means any bonds, notes and other evidences of
          indebtedness authenticated and delivered under this Indenture.

                    "SECURITY REGISTER" and "SECURITY REGISTRAR" have the
          respective meanings specified in Section 305.

                    "SENIOR INDEBTEDNESS" means, with respect to any Person (a)
          indebtedness (including premium, if any, and interest, if any,
          thereon) of such Person for money borrowed or for the deferred
          purchase price of property or services; (b) all other indebtedness
          (including premium, if any, and interest, if any, thereon) evidenced
          by bonds, debentures, notes or other similar instruments (other than
          Securities) issued by such Person; (c) all obligations of such Person
          under lease agreements designating such Person as lessee, irrespective
          of the treatment of any such lease agreement for accounting, tax or
          other purposes; (d) all obligations of such Person for reimbursement
          (including premium, if any, and interest, if any thereon) in respect
          of any letter of credit, banker's acceptance, security purchase
          facility or similar credit transaction; (e) all obligations of the
          character referred to in clauses (a) through (d) above of other
          Persons for the payment of which such Person is responsible or liable
          as obligor, guarantor or otherwise; and (f) all obligations of the
          character referred to in clauses (a) through (d) above of other
          Persons secured by any lien on any property or asset of such Person
          (whether or not such obligation is assumed by such Person); provided,
          however, that Senior Indebtedness shall not include (x) any such
          indebtedness that is by its terms subordinated to or pari passu with
          the Securities or (y) any indebtedness between or among such Person
          and its Affiliates, including all other debt securities and guarantees
          in respect of such debt securities, issued to (i) any Washington Water
          Power Trust or (ii) any other trust, or a trustee of such trust,
          partnership or other entity which is a financing vehicle of such
          Person in connection with the issuance by such financing vehicle of
          preferred securities.

                    "SPECIAL RECORD DATE" for the payment of any Unpaid Interest
          on the Securities of any series means a date fixed by the Trustee
          pursuant to Section 307.

                    "STATED INTEREST RATE" means a rate (whether fixed or
          variable) at which an obligation by its terms is stated to bear simple
          interest. Any calculation or other determination to be made under this
          Indenture by reference to the Stated Interest Rate on an obligation
          shall be made (a) if the Company's obligations in respect of any other
          indebtedness shall be evidenced or secured in whole or in part by such
          obligation, by reference to the lower of the Stated Interest Rate on
          such obligation and the Stated Interest Rate on such other
          indebtedness and (b) without regard to the effective interest cost to
          the Company of such obligation or of any such other indebtedness.
   16
                    "STATED MATURITY", when used with respect to any obligation
          or any installment of principal thereof or interest thereon, means the
          date on which the principal of such obligation or such installment of
          principal or interest is stated to be due and payable (without regard
          to any provisions for redemption, prepayment, acceleration, purchase
          or extension).

                    "SUCCESSOR CORPORATION" has the meaning set forth in
          Section 1001.

                    "TRANCHE" means a group of Securities which (a) are of the
          same series and (b) have identical terms except as to principal amount
          and/or date of issuance.

                    "TRUST INDENTURE ACT" means, as of any time, the Trust
          Indenture Act of 1939, or any successor statute, as in effect at such
          time.

                    "TRUST SECURITIES", with respect to a Washington Water Power
          Trust, means the securities issued by such trust, as established in
          the Declaration of such trust.

                    "TRUSTEE" means the Person named as the "Trustee" in the
          first paragraph of this Indenture until a successor trustee shall have
          become such with respect to one or more series of Securities pursuant
          to the applicable provisions of this Indenture, and thereafter
          "Trustee" shall mean or include each Person who is then a Trustee
          hereunder, and, if at any time there is more than one Person acting as
          trustee hereunder, "Trustee" shall mean each such Person so acting.

                    "UNITED STATES" means the United States of America, its
          Territories, its possessions and other areas subject to its political
          jurisdiction.

                    "UNPAID INTEREST" has the meaning specified in Section
          307.

                    "WASHINGTON WATER POWER TRUST" means each of Washington
          Water Power Capital I, Washington Water Power Capital II and
          Washington Water Power Capital III, each a business trust established
          under the laws of the State of Delaware, and any other similar trust
          established for the purpose of issuing securities upon the issuance
          and delivery to it of Securities.

          SECTION 102.  COMPLIANCE CERTIFICATES AND OPINIONS.

                    Except as otherwise expressly provided in this Indenture,
          upon any application or request by the Company to the Trustee to take
          any action under any provision of this Indenture, the Company shall
          furnish to the Trustee an Officer's Certificate stating that all
          conditions precedent, if any, provided for in 
   17
          this Indenture relating to the proposed action have been complied with
          and an Opinion of Counsel stating that in the opinion of such counsel
          all such conditions precedent, if any, have been complied with, it
          being understood that in the case of any such application or request
          as to which the furnishing of such documents is specifically required
          by any provision of this Indenture relating to such particular
          application or request, no additional certificate or opinion need be
          furnished.

                    Every certificate or opinion with respect to compliance with
          a condition or covenant provided for in this Indenture shall include:

                         (a) a statement that each individual signing such
                    certificate or opinion has read such covenant or condition
                    and the definitions herein relating thereto;

                         (b) a brief statement as to the nature and scope of the
                    examination or investigation upon which the statements or
                    opinions contained in such certificate or opinion are based;

                         (c) a statement that, in the opinion of each such
                    individual, such individual has made such examination or
                    investigation as is necessary to enable such individual to
                    express an informed opinion as to whether or not such
                    covenant or condition has been complied with; and

                         (d) a statement as to whether, in the opinion of each
                    such individual, such condition or covenant has been
                    complied with.

          SECTION 103.  CONTENT AND FORM OF DOCUMENTS DELIVERED TO TRUSTEE.

                    (a) Any Officer's Certificate may be based (without further
          examination or investigation), insofar as it relates to or is
          dependent upon legal matters, upon an opinion of, or representations
          by, counsel, unless, in any case, such officer has actual knowledge
          that the certificate or opinion or representations with respect to the
          matters upon which such Officer's Certificate may be based as
          aforesaid are erroneous.

                    Any Opinion of Counsel may be based (without further
          examination or investigation), insofar as it relates to or is
          dependent upon factual matters, information with respect to which is
          in the possession of the Company, upon a certificate of, or
          representations by, an officer or officers of the Company, unless such
          counsel has actual knowledge that the certificate or opinion or
          representations with respect to the matters upon which his opinion may
          be based as aforesaid are erroneous. In addition, any Opinion of
          Counsel may be based (without further examination or investigation),
          insofar as it relates to or is dependent upon 

   18
          matters covered in an Opinion of Counsel rendered by other counsel,
          upon such other Opinion of Counsel, unless such counsel has actual
          knowledge that the Opinion of Counsel rendered by such other counsel
          with respect to the matters upon which his Opinion of Counsel may be
          based as aforesaid are erroneous. If, in order to render any Opinion
          of Counsel provided for herein, the signer thereof shall deem it
          necessary that additional facts or matters be stated in any Officer's
          Certificate provided for herein, then such certificate may state all
          such additional facts or matters as the signer of such Opinion of
          Counsel may request.

                    (b) In any case where several matters are required to be
          certified by, or covered by an opinion of, any specified Person, it is
          not necessary that all such matters be certified by, or covered by the
          opinion of, only one such Person, or that they be so certified or
          covered by only one document, but one such Person may certify or give
          an opinion with respect to some matters and one or more other such
          Persons as to other matters, and any such Person may certify or give
          an opinion as to such matters in one or several documents. Where any
          Person is required to make, give or execute two or more applications,
          requests, consents, certificates, statements, opinions or other
          instruments under this Indenture, they may, but need not, be
          consolidated and form one instrument.

                    (c) Whenever, subsequent to the receipt by the Trustee of
          any Board Resolution, Officer's Certificate, Opinion of Counsel or
          other document or instrument, a clerical, typographical or other
          inadvertent or unintentional error or omission shall be discovered
          therein, a new document or instrument may be substituted therefor in
          corrected form with the same force and effect as if originally filed
          in the corrected form and, irrespective of the date or dates of the
          actual execution and/or delivery thereof, such substitute document or
          instrument shall be deemed to have been executed and/or delivered as
          of the date or dates required with respect to the document or
          instrument for which it is substituted. Anything in this Indenture to
          the contrary notwithstanding, if any such corrective document or
          instrument indicates that action has been taken by or at the request
          of the Company which could not have been taken had the original
          document or instrument not contained such error or omission, the
          action so taken shall not be invalidated or otherwise rendered
          ineffective but shall be and remain in full force and effect, except
          to the extent that such action was a result of willful misconduct or
          bad faith. Without limiting the generality of the foregoing, any
          Securities issued under the authority of such defective document or
          instrument shall nevertheless be the valid obligations of the Company
          entitled to the benefits provided by this Indenture equally and
          ratably with all other Outstanding Securities, except as aforesaid.

          SECTION 104.  ACTS OF HOLDERS.
   19
                    (a) Any request, demand, authorization, direction, notice,
          consent, election, waiver or other action provided by this Indenture
          to be made, given or taken by Holders may be embodied in and evidenced
          by one or more instruments of substantially similar tenor signed by
          such Holders in person or by an agent duly appointed in writing or,
          alternatively, may be embodied in and evidenced by the record of
          Holders voting in favor thereof, either in person or by proxies duly
          appointed in writing, at any meeting of Holders duly called and held
          in accordance with the provisions of Article Twelve, or a combination
          of such instruments and any such record. Except as herein otherwise
          expressly provided, such action shall become effective when such
          instrument or instruments or record or both are delivered to the
          Trustee and, where it is hereby expressly required, to the Company.
          Such instrument or instruments and any such record (and the action
          embodied therein and evidenced thereby) are herein sometimes referred
          to as the "ACT" of the Holders signing such instrument or instruments
          and so voting at any such meeting. Proof of execution of any such
          instrument or of a writing appointing any such agent, or of the
          holding by any Person of a Security, shall be sufficient for any
          purpose of this Indenture and (subject to Section 801) conclusive in
          favor of the Trustee and the Company, if made in the manner provided
          in this Section. The record of any meeting of Holders shall be proved
          in the manner provided in Section 1206.

                    (b) The fact and date of the execution by any Person of any
          such instrument or writing may be proved by the affidavit of a witness
          of such execution or by a certificate of a notary public or other
          officer authorized by law to take acknowledgments of deeds, certifying
          that the individual signing such instrument or writing acknowledged to
          him the execution thereof or may be proved in any other manner which
          the Trustee and the Company deem sufficient. Where such execution is
          by a signer acting in a capacity other than his individual capacity,
          such certificate or affidavit shall also constitute sufficient proof
          of his authority.

                    (c) The ownership, principal amount (except as otherwise
          contemplated in clause (y) of the first proviso to the definition of
          Outstanding) and serial numbers of Securities held by any Person, and
          the date of holding the same, shall be proved by the Security
          Register.

                    (d) Any request, demand, authorization, direction, notice,
          consent, election, waiver or other Act of a Holder shall bind every
          future Holder of the same Security and the Holder of every Security
          issued upon the registration of transfer thereof or in exchange
          therefor or in lieu thereof in respect of anything done, omitted or
          suffered to be done by the Trustee or the Company in reliance thereon,
          whether or not notation of such action is made upon such Security.
   20
                    (e) Until such time as written instruments shall have been
          delivered to the Trustee with respect to the requisite percentage of
          principal amount of Securities for the action contemplated by such
          instruments, any such instrument executed and delivered by or on
          behalf of a Holder may be revoked with respect to any or all of such
          Securities by written notice by such Holder or any subsequent Holder,
          proven in the manner in which such instrument was proven.

                    (f) Securities of any series, or any Tranche thereof,
          authenticated and delivered after any Act of Holders may, and shall if
          required by the Trustee, bear a notation in form approved by the
          Trustee as to any action taken by such Act of Holders. If the Company
          shall so determine, new Securities of any series, or any Tranche
          thereof, so modified as to conform, in the opinion of the Trustee and
          the Company, to such action may be prepared and executed by the
          Company and authenticated and delivered by the Trustee in exchange for
          Outstanding Securities of such series or Tranche.

                    (g) The Company may, at its option, by Company Order, fix in
          advance a record date for the determination of Holders entitled to
          give any request, demand, authorization, direction, notice, consent,
          waiver or other Act solicited by the Company, but the Company shall
          have no obligation to do so; provided, however, that the Company may
          not fix a record date for the giving or making of any notice,
          declaration, request or direction referred to in the next sentence. In
          addition, the Trustee may, at its option, fix in advance a record date
          for the determination of Holders of Securities of any series entitled
          to join in the giving or making of any Notice of Default, any
          declaration of acceleration referred to in Section 702, any request to
          institute proceedings referred to in Section 707 or any direction
          referred to in Section 712, in each case with respect to Securities of
          such series. If any such record date is fixed, such request, demand,
          authorization, direction, notice, consent, waiver or other Act, or
          such notice, declaration, request or direction, may be given before or
          after such record date, but only the Holders of record at the close of
          business on the record date shall be deemed to be Holders for the
          purposes of determining (i) whether Holders of the requisite
          proportion of the Outstanding Securities have authorized or agreed or
          consented to such Act (and for that purpose the Outstanding Securities
          shall be computed as of the record date) and/or (ii) which Holders may
          revoke any such Act (notwithstanding subsection (e) of this Section);
          and any such Act, given as aforesaid, shall be effective whether or
          not the Holders which authorized or agreed or consented to such Act
          remain Holders after such record date and whether or not the
          Securities held by such Holders remain Outstanding after such record
          date.

          SECTION 105.  NOTICES, ETC. TO TRUSTEE AND COMPANY.
   21
                    Any request, demand, authorization, direction, notice,
          consent, election, waiver or Act of Holders or other document provided
          or permitted by this Indenture to be made upon, given or furnished to,
          or filed with, the Trustee by any Holder or by the Company, or the
          Company by the Trustee or by any Holder, shall be sufficient for every
          purpose hereunder (unless otherwise expressly provided herein) if the
          same shall be in writing and delivered personally to an officer or
          other responsible employee of the addressee, or transmitted by
          facsimile transmission, telex or other direct written electronic means
          to such telephone number or other electronic communications address as
          the parties hereto shall from time to time designate, or transmitted
          by registered mail, charges prepaid, to the applicable address set
          opposite such party's name below or to such other address as either
          party hereto may from time to time designate:

                         If to the Trustee, to:

                            Wilmington Trust Company
                            Rodney Square North
                            1100 North Market Street
                            Wilmington, Delaware 19890
                            Attention: Corporate Trust Administration
                            Facsimile: (302) 651-1576

                         If to the Company, to:

                            The Washington Water Power Company
                            1411 East Mission Avenue
                            Spokane, Washington  99202
                            Attention: Treasurer
                            Facsimile: (509) 482-4879

                    Any communication contemplated herein shall be deemed to
          have been made, given, furnished and filed if personally delivered, on
          the date of delivery, if transmitted by facsimile transmission, telex
          or other direct written electronic means, on the date of transmission,
          and if transmitted by registered mail, on the date of receipt.

          SECTION 106.  NOTICE TO HOLDERS OF SECURITIES; WAIVER.

                    Except as otherwise expressly provided herein, where this
          Indenture provides for notice to Holders of any event, such notice
          shall be sufficiently given, and shall be deemed given, to Holders if
          in writing and mailed, first-class postage prepaid, to each Holder
          affected by such event, at the address of such Holder as it appears in
          the Security Register, not later than the latest date, and not earlier
          than the earliest date, prescribed for the giving of such notice.

                    In case by reason of the suspension of regular mail service
          or by reason of any other cause it shall be impracticable 
   22
          to give such notice to Holders by mail, then such notification as
          shall be made with the approval of the Trustee shall constitute a
          sufficient notification for every purpose hereunder. In any case where
          notice to Holders is given by mail, neither the failure to mail such
          notice, nor any defect in any notice so mailed, to any particular
          Holder shall affect the sufficiency of such notice with respect to
          other Holders.

                    Any notice required by this Indenture may be waived in
          writing by the Person entitled to receive such notice, either before
          or after the event otherwise to be specified therein, and such waiver
          shall be the equivalent of such notice. Waivers of notice by Holders
          shall be filed with the Trustee, but such filing shall not be a
          condition precedent to the validity of any action taken in reliance
          upon such waiver.

          SECTION 107.  CONFLICT WITH TRUST INDENTURE ACT.

                    If any provision of this Indenture limits, qualifies or
          conflicts with another provision hereof which is required or deemed to
          be included in this Indenture by, or is otherwise governed by, any
          provision of the Trust Indenture Act, such other provision shall
          control; and if any provision hereof otherwise conflicts with the
          Trust Indenture Act, the Trust Indenture Act shall control.

          SECTION 108.  EFFECT OF HEADINGS AND TABLE OF CONTENTS.

                    The Article and Section headings in this Indenture and the
          Table of Contents are for convenience only and shall not affect the
          construction hereof.

          SECTION 109.  SUCCESSORS AND ASSIGNS.

                    All covenants and agreements in this Indenture by the
          Company shall bind its successors and assigns, whether so expressed or
          not.

          SECTION 110.  SEPARABILITY CLAUSE.

                    In case any provision in this Indenture or the Securities
          shall be held to be invalid, illegal or unenforceable, the validity,
          legality and enforceability of the remaining provisions shall not in
          any way be affected or impaired thereby.

          SECTION 111.  BENEFITS OF INDENTURE.

                    Nothing in this Indenture or the Securities, express or
          implied, shall give to any Person, other than the parties hereto,
          their successors hereunder and the Holders and, to the extent provided
          in Sections 104(a) and 716, registered holders of Trust Securities
          (other than Trust Securities initially issued and sold to the Company)
          and, so long as the notice described in Section 
   23
          1413 shall not have been given, holders of Senior Indebtedness, any
          benefit or any legal or equitable right, remedy or claim under this
          Indenture.

          SECTION 112.  GOVERNING LAW.

                    This Indenture and the Securities shall be governed by and
          construed in accordance with the law of the State of New York
          (including without limitation Section 5-1401 of the New York General
          Obligations Law or any successor to such statute), except to the
          extent that the Trust Indenture Act shall be applicable.

          SECTION 113.  LEGAL HOLIDAYS.

                    In any case where any Interest Payment Date, Redemption Date
          or Stated Maturity of any Security shall not be a Business Day at any
          Place of Payment, then (notwithstanding any other provision of this
          Indenture or of the Securities other than a provision in Securities of
          any series, or any Tranche thereof, or in the indenture supplemental
          hereto, Board Resolution or Officer's Certificate which establishes
          the terms of the Securities of such series or Tranche, which
          specifically states that such provision shall apply in lieu of this
          Section) payment of interest or principal and premium, if any, need
          not be made at such Place of Payment on such date, but may be made on
          the next succeeding Business Day at such Place of Payment with the
          same force and effect as if made on the Interest Payment Date or
          Redemption Date, or at the Stated Maturity, and, if such payment is
          made or duly provided for on such Business Day, no interest shall
          accrue on the amount so payable for the period from and after such
          Interest Payment Date, Redemption Date or Stated Maturity, as the case
          may be, to such Business Day.


                                   ARTICLE TWO

                                    SECURITY FORMS

          SECTION 201.  FORMS GENERALLY.

                    The definitive Securities of each series shall be in
          substantially the form or forms established in the indenture
          supplemental hereto establishing such series, or in a Board Resolution
          establishing such series, or in an Officer's Certificate pursuant to
          such a supplemental indenture or Board Resolution, in any case with
          such appropriate insertions, omissions, substitutions and other
          variations as are required or permitted by this Indenture, and may
          have such letters, numbers or other marks of identification and such
          legends or endorsements placed thereon as may be required to comply
          with the rules of any securities exchange or as may, consistently
          herewith, be determined by the officers executing such Securities, as
          evidenced by their execution of the Securities. If the form or 
   24
          forms of Securities of any series are established in a Board
          Resolution or in an Officer's Certificate pursuant to a Board
          Resolution, such Board Resolution and Officer's Certificate, if any,
          shall be delivered to the Trustee at or prior to the delivery of the
          Company Order contemplated by Section 303 for the authentication and
          delivery of such Securities.

                    The Securities of each series shall be issuable in
          registered form without coupons. The definitive Securities shall be
          produced in such manner as shall be determined by the officers
          executing such Securities, as evidenced by their execution thereof.

          SECTION 202.  FORM OF TRUSTEE"S CERTIFICATE OF AUTHENTICATION.

                    The Trustee's certificate of authentication shall be in
          substantially the form set forth below:

                         This is one of the Securities of the series designated
                    therein referred to in the within-mentioned Indenture.


                                             -------------------------------
                                             as Trustee

                                             By:
                                                ----------------------------
                                                  Authorized Officer


                                  ARTICLE THREE

                                    THE SECURITIES

          SECTION 301.  AMOUNT UNLIMITED; ISSUABLE IN SERIES.

                    The aggregate principal amount of Securities which may be
          authenticated and delivered under this Indenture is unlimited.

                    The Securities may be issued in one or more series. Subject
          to the last paragraph of this Section, prior to the authentication and
          delivery of Securities of any series there shall be established by
          specification in a supplemental indenture or in a Board Resolution, or
          in an Officer's Certificate pursuant to a supplemental indenture or a
          Board Resolution:

                         (a) the title of the Securities of such series (which
                    shall distinguish the Securities of such series from
                    Securities of all other series);

                         (b) any limit upon the aggregate principal amount of
                    the Securities of such series which may be authenti-
   25
                    cated and delivered under this Indenture (except for
                    Securities authenticated and delivered upon registration of
                    transfer of, or in exchange for, or in lieu of, other
                    Securities of such series pursuant to Section 304, 305, 306,
                    406 or 1106 and except for any Securities which, pursuant to
                    Section 303, are deemed never to have been authenticated and
                    delivered hereunder);

                         (c) the Persons (without specific identification) to
                    whom interest on Securities of such series, or any Tranche
                    thereof, shall be payable, if other than the Persons in
                    whose names such Securities (or one or more Predecessor
                    Securities) are registered at the close of business on the
                    Regular Record Date for such interest;

                         (d) the date or dates on which the principal of the
                    Securities of such series, or any Tranche thereof, is
                    payable or any formulary or other method or other means by
                    which such date or dates shall be determined, by reference
                    to an index or other fact or event ascertainable outside of
                    this Indenture or otherwise (without regard to any
                    provisions for redemption, prepayment, acceleration,
                    purchase or extension); and the right, if any, to extend the
                    Maturity of the Securities of such series, or any Tranche
                    thereof, and the duration of any such extension;

                         (e) the rate or rates at which the Securities of such
                    series, or any Tranche thereof, shall bear interest, if any
                    (including the rate or rates at which overdue principal
                    shall bear interest, if different from the rate or rates at
                    which such Securities shall bear interest prior to Maturity,
                    and, if applicable, the rate or rates at which overdue
                    premium or interest shall bear interest, if any), or any
                    formulary or other method or other means by which such rate
                    or rates shall be determined, by reference to an index or
                    other fact or event ascertainable outside of this Indenture
                    or otherwise; the date or dates from which such interest
                    shall accrue; the Interest Payment Dates on which such
                    interest shall be payable and the Regular Record Date, if
                    any, for the interest payable on such Securities on any
                    Interest Payment Date; the basis of computation of interest,
                    if other than as provided in Section 310; and the right, if
                    any, to extend the interest payment periods and the duration
                    of any such extension;

                         (f) the place or places at which and/or the methods (if
                    other than as provided elsewhere in this Indenture) by which
                    (i) the principal of and premium, if any, and interest, if
                    any, on Securities of such series, or any Tranche thereof,
                    shall be payable, (ii) 
   26
                    registration of transfer of Securities of such series, or
                    any Tranche thereof, may be effected, (iii) exchanges of
                    Securities of such series, or any Tranche thereof, may be
                    effected and (iv) notices and demands to or upon the Company
                    in respect of the Securities of such series, or any Tranche
                    thereof, and this Indenture may be served; the Security
                    Registrar and any Paying Agent or Agents for such series or
                    Tranche; and, if such is the case, that the principal of
                    such Securities shall be payable without the presentment or
                    surrender thereof;

                         (g) the period or periods within which or the date or
                    dates on which, the price or prices at which and the terms
                    and conditions upon which the Securities of such series, or
                    any Tranche thereof, may be redeemed, in whole or in part,
                    at the option of the Company;

                         (h) the obligation or obligations, if any, of the
                    Company to redeem or purchase the Securities of such series,
                    or any Tranche thereof, pursuant to any sinking fund or
                    other mandatory redemption provisions or at the option of a
                    Holder thereof and the period or periods within which or the
                    date or dates on which, the price or prices at which and the
                    terms and conditions upon which such Securities shall be
                    redeemed or purchased, in whole or in part, pursuant to such
                    obligation, and applicable exceptions to the requirements of
                    Section 404 in the case of mandatory redemption or
                    redemption at the option of the Holder;

                         (i) the denominations in which Securities of such
                    series, or any Tranche thereof, shall be issuable if other
                    than denominations of One Thousand Dollars ($1,000) and any
                    integral multiple thereof (in the case of Securities issued
                    to a Washington Water Power Trust or a trustee of such trust
                    in connection with the issuance of Trust Securities by such
                    Washington Water Power Trust, the denomination in which such
                    Securities shall be issuable if other than denominations of
                    Twenty-Five Dollars ($25) and any integral multiple
                    thereof);

                         (j) the currency or currencies, including composite
                    currencies, in which payment of the principal of and
                    premium, if any, and interest, if any, on the Securities of
                    such series, or any Tranche thereof, shall be payable (if
                    other than in Dollars);

                         (k) if the principal of or premium, if any, or
                    interest, if any, on the Securities of such series, or any
                    Tranche thereof, are to be payable, at the election 
   27
                    of the Company or a Holder thereof, in a coin or currency
                    other than that in which the Securities are stated to be
                    payable, the period or periods within which, and the terms
                    and conditions upon which, such election may be made;

                         (l) if the principal of or premium, if any, or
                    interest, if any, on the Securities of such series, or any
                    Tranche thereof, are to be payable, or are to be payable at
                    the election of the Company or a Holder thereof, in
                    securities or other property, the type and amount of such
                    securities or other property, or the formulary or other
                    method or other means by which such amount shall be
                    determined, and the period or periods within which, and the
                    terms and conditions upon which, any such election may be
                    made;

                         (m) if the amount payable in respect of the principal
                    of or premium, if any, or interest, if any, on the
                    Securities of such series, or any Tranche thereof, may be
                    determined with reference to an index or other fact or event
                    ascertainable outside of this Indenture, the manner in which
                    such amounts shall be determined (to the extent not
                    established pursuant to clause (e) of this paragraph);

                         (n) if other than the principal amount thereof, the
                    portion of the principal amount of Securities of such
                    series, or any Tranche thereof, which shall be payable upon
                    declaration of acceleration of the Maturity thereof pursuant
                    to Section 702;

                         (o) the terms, if any, pursuant to which the Securities
                    of such series, or any Tranche thereof, may be converted
                    into or exchanged for shares of capital stock or other
                    securities of the Company or any other Person;

                         (p) the obligations or instruments, if any, which shall
                    be considered to be Eligible Obligations in respect of the
                    Securities of such series, or any Tranche thereof,
                    denominated in a currency other than Dollars or in a
                    composite currency, and any additional or alternative
                    provisions for the reinstatement of the Company's
                    indebtedness in respect of such Securities after the
                    satisfaction and discharge thereof as provided in Section
                    601;

                         (q) if the Securities of such series, or any Tranche
                    thereof, are to be issued in global form, (i) any
                    limitations on the rights of the Holder or Holders of such
                    Securities to transfer or exchange the same or to obtain the
                    registration of transfer thereof, (ii)
   28
                    any limitations on the rights of the Holder or Holders
                    thereof to obtain certificates therefor in definitive form
                    in lieu of temporary form and (iii) any and all other
                    matters incidental to such Securities;

                         (r) if the Securities of such series, or any Tranche
                    thereof, are to be issuable as bearer securities, any and
                    all matters incidental thereto which are not specifically
                    addressed in a supplemental indenture as contemplated by
                    clause (f) of Section 1101;

                         (s) to the extent not established pursuant to clause
                    (q) of this paragraph, any limitations on the rights of the
                    Holders of the Securities of such Series, or any Tranche
                    thereof, to transfer or exchange such Securities or to
                    obtain the registration of transfer thereof; and if a
                    service charge will be made for the registration of transfer
                    or exchange of Securities of such series, or any Tranche
                    thereof, the amount or terms thereof;

                         (t) any exceptions to Section 113, or variation in the
                    definition of Business Day, with respect to the Securities
                    of such series, or any Tranche thereof; and

                         (u)  any other terms of the Securities of such
                    series, or any Tranche thereof.

                    With respect to Securities of a series subject to a Periodic
          Offering, the indenture supplemental hereto or the Board Resolution
          which establishes such series, or the Officer's Certificate pursuant
          to such supplemental indenture or Board Resolution, as the case may
          be, may provide general terms or parameters for Securities of such
          series and provide either that the specific terms of Securities of
          such series, or any Tranche thereof, shall be specified in a Company
          Order or that such terms shall be determined by the Company or its
          agents in accordance with procedures specified in a Company Order as
          contemplated by clause (b) of Section 303.

                    Anything herein to the contrary notwithstanding, the Trustee
          shall be under no obligation to authenticate and deliver Securities of
          any series the terms of which, established as contemplated by this
          Section, would affect the rights, duties, obligations, liabilities or
          immunities of the Trustee under this Indenture or otherwise.

          SECTION 302.  DENOMINATIONS.

                    Unless otherwise provided as contemplated by Section 301
          with respect to any series of Securities, or any Tranche thereof, the
          Securities of each series shall be issuable in 
   29
          denominations of One Thousand Dollars ($1,000) and any integral
          multiple thereof (in the case of securities issued to a Washington
          Water Power Trust or a trustee of such trust in connection with the
          issuance of Trust Securities by such Washington Water Power Trust, the
          Securities of each series shall be issuable in denominations of
          Twenty-Five Dollars ($25) and any integral multiple thereof).

          SECTION 303.  EXECUTION, DATING, CERTIFICATE OF AUTHENTICATION.

                    Unless otherwise provided as contemplated by Section 301
          with respect to any series of Securities, or any Tranche thereof, the
          Securities shall be executed on behalf of the Company by an Authorized
          Officer, and may have the corporate seal of the Company affixed
          thereto or reproduced thereon and attested by any other Authorized
          Officer. The signature of any or all of these officers on the
          Securities may be manual or facsimile.

                    Securities bearing the manual or facsimile signatures of
          individuals who were at the time of execution Authorized Officers of
          the Company shall bind the Company, notwithstanding that such
          individuals or any of them have ceased to hold such offices prior to
          the authentication and delivery of such Securities or did not hold
          such offices at the date of such Securities.

                    The Trustee shall authenticate and deliver Securities of a
          series, for original issue, at one time or from time to time in
          accordance with the Company Order referred to below, upon receipt by
          the Trustee of:

                         (a)  the instrument or instruments establishing
                    the form or forms and terms of such series, as provided
                    in Sections 201 and 301;

                         (b) a Company Order requesting the authentication and
                    delivery of such Securities and, to the extent that the
                    terms of such Securities shall not have been established in
                    an indenture supplemental hereto or in a Board Resolution,
                    or in an Officer's Certificate pursuant to a supplemental
                    indenture or Board Resolution, all as contemplated by
                    Sections 201 and 301, either (i) establishing such terms or
                    (ii) in the case of Securities of a series subject to a
                    Periodic Offering, specifying procedures, acceptable to the
                    Trustee, by which such terms are to be established (which
                    procedures may provide for authentication and delivery
                    pursuant to oral or electronic instructions from the Company
                    or any agent or agents thereof, which oral instructions are
                    to be promptly confirmed electronically or in writing), in
                    either case in accordance with the instrument or instruments
                    delivered pursuant to clause (a) above;
   30
                         (c)  the Securities of such series, executed on
                    behalf of the Company by an Authorized Officer;

                         (d)  an Opinion of Counsel to the effect that:

                              (i) the form or forms of such Securities have been
                         duly authorized by the Company and have been
                         established in conformity with the provisions of this
                         Indenture;

                              (ii) the terms of such Securities have been duly
                         authorized by the Company and have been established in
                         conformity with the provisions of this Indenture; and

                              (iii) when such Securities shall have been
                         authenticated and delivered by the Trustee and issued
                         and delivered by the Company in the manner and subject
                         to any conditions specified in such Opinion of Counsel,
                         such Securities will constitute valid obligations of
                         the Company, entitled to the benefits provided by this
                         Indenture equally and ratably with all other Securities
                         then Outstanding;

                    provided, however, that, with respect to Securities of a
                    series subject to a Periodic Offering, the Trustee shall be
                    entitled to receive such Opinion of Counsel only once at or
                    prior to the time of the first authentication and delivery
                    of such Securities (provided that such Opinion of Counsel
                    addresses the authentication and delivery of all Securities
                    of such series) and that, in lieu of the opinions described
                    in clauses (ii) and (iii) above, Counsel may opine that:

                              (x) when the terms of such Securities shall have
                         been established pursuant to a Company Order or Orders
                         or pursuant to such procedures as may be specified from
                         time to time by a Company Order or Orders, all as
                         contemplated by and in accordance with the instrument
                         or instruments delivered pursuant to clause (a) above,
                         such terms will have been duly authorized by the
                         Company and will have been established in conformity
                         with the provisions of this Indenture; and

                              (y) when such Securities shall have been
                         authenticated and delivered by the Trustee in
                         accordance with this Indenture and the Company Order or
                         Orders or the specified procedures referred to in
                         paragraph (x) above and issued and delivered by the
                         Company in the manner and subject 
   31
                          to any conditions specified in such Opinion of
                          Counsel, such Securities will constitute valid
                          obligations of the Company, entitled to the
                          benefits provided by this Indenture equally and
                          ratably with all other Securities then
                          Outstanding.

                    With respect to Securities of a series subject to a Periodic
          Offering, the Trustee may conclusively rely, as to the authorization
          by the Company of any of such Securities, the forms and terms thereof,
          the validity thereof and the compliance of the authentication and
          delivery thereof with the terms and conditions of this Indenture, upon
          the Opinion or Opinions of Counsel and the certificates and other
          documents delivered pursuant to this Article at or prior to the time
          of the first authentication and delivery of Securities of such series
          until any of such opinions, certificates or other documents have been
          superseded or revoked or expire by their terms. In connection with the
          authentication and delivery of Securities of a series subject to a
          Periodic Offering, the Trustee shall be entitled to assume that the
          Company's instructions to authenticate and deliver such Securities do
          not violate any applicable law or any applicable rule, regulation or
          order of any Governmental Authority having jurisdiction over the
          Company.

                    If the form of terms of the Securities of any series have
          been established by or pursuant to a Board Resolution or an Officer's
          Certificate as permitted by Sections 201 or 301, the Trustee shall not
          be required to authenticate such Securities if the issuance of such
          Securities pursuant to this Indenture will affect the Trustee's own
          rights, duties or immunities under the Securities and this Indenture
          or otherwise in a manner which is not reasonably acceptable to the
          Trustee.

                    Unless otherwise specified as contemplated by Section 301
          with respect to any series of Securities, or any Tranche thereof, each
          Security shall be dated the date of its authentication.

                    Unless otherwise specified as contemplated by Section 301
          with respect to any series of Securities, or any Tranche thereof, no
          Security shall be entitled to any benefit under this Indenture or be
          valid or obligatory for any purpose unless there appears on such
          Security a certificate of authentication substantially in the form
          provided for herein executed by the Trustee or an Authenticating Agent
          by manual signature of an authorized officer thereof, and such
          certificate upon any Security shall be conclusive evidence, and the
          only evidence, that such Security has been duly authenticated and
          delivered hereunder and is entitled to the benefits of this Indenture.
          Notwithstanding the foregoing, if (a) any Security shall have been
          authenticated and delivered hereunder to the Company, or any Person
          acting on its behalf, but shall never have been issued and 
   32
          sold by the Company, (b) the Company shall deliver such Security to
          the Security Registrar for cancellation or shall cancel such Security
          and deliver evidence of such cancellation to the Trustee, in each case
          as provided in Section 309, and (c) the Company, at its election,
          shall deliver to the Trustee a written statement (which need not
          comply with Section 102 and need not be accompanied by an Officer's
          Certificate or an Opinion of Counsel) stating that such Security has
          never been issued and sold by the Company, then, for all purposes of
          this Indenture, such Security shall be deemed never to have been
          authenticated and delivered hereunder and shall never be entitled to
          the benefits hereof.

          SECTION 304.  TEMPORARY SECURITIES.

                    Pending the preparation of definitive Securities of any
          series, or any Tranche thereof, the Company may execute, and upon
          Company Order the Trustee shall authenticate and deliver, temporary
          Securities which are printed, lithographed, typewritten, mimeographed,
          photocopied or otherwise produced, in any authorized denomination,
          substantially of the tenor of the definitive Securities in lieu of
          which they are issued, with such appropriate insertions, omissions,
          substitutions and other variations as the officers executing such
          Securities may determine, as evidenced by their execution of such
          Securities; provided, however, that temporary Securities need not
          recite specific redemption, sinking fund, conversion or exchange
          provisions.

                    Except as otherwise specified as contemplated by Section 301
          with respect to the Securities of any series, or any Tranche thereof,
          after the preparation of definitive Securities of such series or
          Tranche, the temporary Securities of such series or Tranche shall be
          exchangeable, without charge to the Holder thereof, for definitive
          Securities of such series or Tranche upon surrender of such temporary
          Securities at the office or agency of the Company maintained pursuant
          to Section 502 in a Place of Payment for such Securities. Upon such
          surrender of temporary Securities, the Company shall, except as
          aforesaid, execute and the Trustee shall authenticate and deliver in
          exchange therefor definitive Securities of the same series and
          Tranche, of authorized denominations and of like tenor and aggregate
          principal amount.

                    Until exchanged in full as hereinabove provided, temporary
          Securities shall in all respects be entitled to the same benefits
          under this Indenture as definitive Securities of the same series and
          Tranche and of like tenor authenticated and delivered hereunder.

          SECTION 305.  REGISTRATION, REGISTRATION OF TRANSFER AND
                        EXCHANGE.

                    The Company shall cause to be kept in one of the 
   33
          offices designated pursuant to Section 502, with respect to the
          Securities of each series, or any Tranche thereof, a register (the
          "SECURITY REGISTER") in which, subject to such reasonable regulations
          as it may prescribe, the Company shall provide for the registration of
          Securities of such series or Tranche and the registration of transfer
          thereof. The Company shall designate one Person to maintain the
          Security Register for the Securities of each series and such Person is
          referred to herein, with respect to such series, as the "SECURITY
          REGISTRAR". Anything herein to the contrary notwithstanding, the
          Company may designate one or more of its offices as an office in which
          a register with respect to the Securities of one or more series, or
          any Tranche or Tranches thereof, shall be maintained, and the Company
          may designate itself the Security Registrar with respect to one or
          more of such series. The Security Register shall be open for
          inspection by the Trustee and the Company at all reasonable times.

                    Except as otherwise specified as contemplated by Section 301
          with respect to the Securities of any series, or any Tranche thereof,
          upon surrender for registration of transfer of any Security of such
          series or Tranche at the office or agency of the Company maintained
          pursuant to Section 502 in a Place of Payment for such series or
          Tranche, the Company shall execute, and the Trustee shall authenticate
          and deliver, in the name of the designated transferee or transferees,
          one or more new Securities of the same series and Tranche, of
          authorized denominations and of like tenor and aggregate principal
          amount.

                    Except as otherwise specified as contemplated by Section 301
          with respect to the Securities of any series, or any Tranche thereof,
          any Security of such series or Tranche may be exchanged at the option
          of the Holder, for one or more new Securities of the same series and
          Tranche, of authorized denominations and of like tenor and aggregate
          principal amount, upon surrender of the Securities to be exchanged at
          any such office or agency. Whenever any Securities are so surrendered
          for exchange, the Company shall execute, and the Trustee shall
          authenticate and deliver, the Securities which the Holder making the
          exchange is entitled to receive.

                    All Securities delivered upon any registration of transfer
          or exchange of Securities shall be valid obligations of the Company,
          evidencing the same debt, and entitled to the same benefits under this
          Indenture, as the Securities surrendered upon such registration of
          transfer or exchange.

                    Every Security presented or surrendered for registration of
          transfer or for exchange shall (if so required by the Company, the
          Trustee or the Security Registrar) be duly endorsed or shall be
          accompanied by a written instrument of transfer in form satisfactory
          to the Company, the Trustee or the Security Registrar, as the case may
          be, duly executed by the 
   34
          Holder thereof or his attorney duly authorized in writing.

                    Unless otherwise specified as contemplated by Section 301
          with respect to Securities of any series, or any Tranche thereof, no
          service charge shall be made for any registration of transfer or
          exchange of Securities, but the Company may require payment of a sum
          sufficient to cover any tax or other governmental charge that may be
          imposed in connection with any registration of transfer or exchange of
          Securities, other than exchanges pursuant to Section 304, 406 or 1106
          not involving any transfer.

                    The Company shall not be required to execute or to provide
          for the registration of transfer of or the exchange of (a) Securities
          of any series, or any Tranche thereof, during a period of fifteen (15)
          days immediately preceding the date notice is to be given identifying
          the serial numbers of the Securities of such series or Tranche called
          for redemption or (b) any Security so selected for redemption in whole
          or in part, except the unredeemed portion of any Security being
          redeemed in part.

          SECTION 306.  MUTILATED, DESTROYED, LOST AND STOLEN SECURITIES.

                    If any mutilated Security is surrendered to the Trustee, the
          Company shall execute and the Trustee shall authenticate and deliver
          in exchange therefor a new Security of the same series and Tranche,
          and of like tenor and principal amount and bearing a number not
          contemporaneously outstanding.

                    If there shall be delivered to the Company and the Trustee
          (a) evidence to their satisfaction of the ownership of and the
          destruction, loss or theft of any Security and (b) such security or
          indemnity as may be reasonably required by them to save each of them
          and any agent of either of them harmless, then, in the absence of
          notice to the Company or the Trustee that such Security is held by a
          Person purporting to be the owner of such Security, the Company shall
          execute and the Trustee shall authenticate and deliver, in lieu of any
          such destroyed, lost or stolen Security, a new Security of the same
          series and Tranche, and of like tenor and principal amount and bearing
          a number not contemporaneously outstanding.

                    Notwithstanding the foregoing, in case any such mutilated,
          destroyed, lost or stolen Security has become or is about to become
          due and payable, the Company in its discretion may, but subject to
          compliance with the foregoing conditions, instead of issuing a new
          Security, pay such Security.

                    Upon the issuance of any new Security under this Section,
          the Company may require the payment of a sum sufficient to cover any
          tax or other governmental charge that may be imposed in relation
          thereto and any other reasonable expenses (including the fees and
          expenses of the Trustee) connected therewith.
   35
                    Every new Security of any series issued pursuant to this
          Section in lieu of any destroyed, lost or stolen Security shall
          constitute an additional contractual obligation of the Company,
          whether or not the destroyed, lost or stolen Security shall be at any
          time enforceable by anyone other than the Holder of such new Security,
          and any such new Security shall be entitled to all the benefits of
          this Indenture equally and proportionately with any and all other
          Securities of such series duly issued hereunder.

                    The provisions of this Section are exclusive and shall
          preclude (to the extent lawful) all other rights and remedies with
          respect to the replacement or payment of mutilated, destroyed, lost or
          stolen Securities.

          SECTION 307.  PAYMENT OF INTEREST; INTEREST RIGHTS PRESERVED.

                    Unless otherwise specified as contemplated by Section 301
          with respect to the Securities of any series, or any Tranche thereof,
          interest on any Security which is payable, and is punctually paid or
          duly provided for, on any Interest Payment Date shall be paid to the
          Person in whose name that Security (or one or more Predecessor
          Securities) is registered at the close of business on the Regular
          Record Date for such interest.

                    Any interest on any Security of any series which is payable,
          but is not punctually paid or duly provided for, on any Interest
          Payment Date, including without limitation interest the payment period
          for which has been extended as specified with respect to such series
          as contemplated by Section 301 (herein called "UNPAID INTEREST"),
          shall forthwith cease to be payable to the Holder on the related
          Regular Record Date by virtue of having been such Holder, and such
          Unpaid Interest may be paid by the Company, at its election in each
          case, as provided in clause (a) or (b) below:

                         (a) The Company may elect to make payment of any Unpaid
                    Interest to the Persons in whose names the Securities of
                    such series (or their respective Predecessor Securities) are
                    registered at the close of business on a date (herein called
                    a "SPECIAL RECORD DATE") for the payment of such Unpaid
                    Interest, which shall be fixed in the following manner. The
                    Company shall notify the Trustee in writing of the amount of
                    Unpaid Interest proposed to be paid on each Security of such
                    series and the date of the proposed payment, and at the same
                    time the Company shall deposit with the Trustee an amount of
                    money equal to the aggregate amount proposed to be paid in
                    respect of such Unpaid Interest or shall make arrangements
                    satisfactory to the Trustee for such deposit prior to the
                    date of the proposed payment, such money when deposited to
                    be held in trust for the 
   36
                    benefit of the Persons entitled to such Unpaid Interest as
                    in this clause provided. Thereupon the Trustee shall fix a
                    Special Record Date for the payment of such Unpaid Interest
                    which shall be not more than thirty (30) days and not less
                    than ten (10) days prior to the date of the proposed payment
                    and not less than twenty-five (25) days after the receipt by
                    the Trustee of the notice of the proposed payment. The
                    Trustee shall promptly notify the Company of such Special
                    Record Date and, in the name and at the expense of the
                    Company, shall, not less than fifteen (15) days prior to
                    such Special Record Date, cause notice of the proposed
                    payment of such Unpaid Interest and the Special Record Date
                    therefor to be mailed, first-class postage prepaid, to each
                    Holder of Securities of such series at the address of such
                    Holder as it appears in the Security Register. Notice of the
                    proposed payment of such Unpaid Interest and the Special
                    Record Date therefor having been so mailed, such Unpaid
                    Interest shall be paid to the Persons in whose names the
                    Securities of such series (or their respective Predecessor
                    Securities) are registered at the close of business on such
                    Special Record Date.

                         (b) The Company may make payment of any Unpaid Interest
                    on the Securities of any series in any other lawful manner
                    not inconsistent with the requirements of any securities
                    exchange on which such Securities may be listed, and upon
                    such notice as may be required by such exchange, if, after
                    notice given by the Company to the Trustee of the proposed
                    payment pursuant to this clause, such manner of payment
                    shall be deemed practicable by the Trustee.

                    Subject to the foregoing provisions of this Section and
          Section 305, each Security delivered under this Indenture upon
          registration of transfer of or in exchange for or in lieu of any other
          Security shall carry the rights to interest accrued and unpaid, and to
          accrue, which were carried by such other Security.

          SECTION 308.  PERSONS DEEMED OWNERS.

                    The Company, the Trustee and any agent of the Company or the
          Trustee may treat the Person in whose name any Security is registered
          as the absolute owner of such Security for the purpose of receiving
          payment of principal of and premium, if any, and (subject to Sections
          305 and 307) interest, if any, on such Security and for all other
          purposes whatsoever, whether or not such Security be overdue, and
          neither the Company, the Trustee nor any agent of the Company or the
          Trustee shall be affected by notice to the contrary.

          SECTION 309.  CANCELLATION BY SECURITY REGISTRAR.
   37
                    All Securities surrendered for payment, redemption,
          registration of transfer or exchange shall, if surrendered to any
          Person other than the Security Registrar, be delivered to the Security
          Registrar and, if not theretofore canceled, shall be promptly canceled
          by the Security Registrar. The Company may at any time deliver to the
          Security Registrar for cancellation any Securities previously
          authenticated and delivered hereunder which the Company may have
          acquired in any manner whatsoever or which the Company shall not have
          issued and sold, and all Securities so delivered shall be promptly
          canceled by the Security Registrar. All canceled Securities held by
          the Security Registrar shall be disposed of in accordance with a
          Company Order delivered to the Security Registrar and the Trustee, and
          the Security Registrar shall promptly deliver a certificate of
          disposition to the Trustee and the Company unless, by a Company Order,
          similarly delivered, the Company shall direct that canceled Securities
          be returned to it. The Security Registrar shall promptly deliver
          evidence of any cancellation of a Security in accordance with this
          Section 309 to the Trustee and the Company.

          SECTION 310.  COMPUTATION OF INTEREST.

                    Except as otherwise specified as contemplated by Section 301
          for Securities of any series, or any Tranche thereof, interest on the
          Securities of each series shall be computed on the basis of a three
          hundred sixty (360) day year consisting of twelve (12) thirty (30) day
          months and, with respect to any period less than a full calendar
          month, on the basis of the actual number of days elapsed during such
          period.

          SECTION 311.  PAYMENT TO BE IN PROPER CURRENCY.

                    In the case of the Securities of any series, or any Tranche
          thereof, denominated in any currency other than Dollars or in a
          composite currency (the "REQUIRED CURRENCY"), except as otherwise
          specified with respect to such Securities as contemplated by Section
          301, the obligation of the Company to make any payment of the
          principal thereof, or the premium, if any, or interest, if any,
          thereon, shall not be discharged or satisfied by any tender by the
          Company, or recovery by the Trustee, in any currency other than the
          Required Currency, except to the extent that such tender or recovery
          shall result in the Trustee timely holding the full amount of the
          Required Currency then due and payable. If any such tender or recovery
          is in a currency other than the Required Currency, the Trustee may
          take such actions as it considers appropriate to exchange such
          currency for the Required Currency. The costs and risks of any such
          exchange, including without limitation the risks of delay and exchange
          rate fluctuation, shall be borne by the Company, the Company shall
          remain fully liable for any shortfall or delinquency in the full
          amount of Required Currency then due and payable, and in no
          circumstances shall the Trustee be liable 
   38
          therefor except in the case of its negligence or willful misconduct.


                                     ARTICLE FOUR

                               REDEMPTION OF SECURITIES

          SECTION 401.  APPLICABILITY OF ARTICLE.

                    Securities of any series, or any Tranche thereof, which are
          redeemable before their Stated Maturity shall be redeemable in
          accordance with their terms and (except as otherwise specified as
          contemplated by Section 301 for Securities of such series or Tranche)
          in accordance with this Article.

          SECTION 402.  ELECTION TO REDEEM; NOTICE TO TRUSTEE.

                    The election of the Company to redeem any Securities shall
          be evidenced by a Board Resolution or an Officer's Certificate. The
          Company shall, at least forty-five (45) days prior to the Redemption
          Date fixed by the Company (unless a shorter notice shall be
          satisfactory to the Trustee), notify the Trustee in writing of such
          Redemption Date and of the principal amount of such Securities to be
          redeemed. In the case of any redemption of Securities (a) prior to the
          expiration of any restriction on such redemption provided in the terms
          of such Securities or elsewhere in this Indenture or (b) pursuant to
          an election of the Company which is subject to a condition specified
          in the terms of such Securities, the Company shall furnish the Trustee
          with an Officer's Certificate evidencing compliance with such
          restriction or condition.

          SECTION 403.  SELECTION OF SECURITIES TO BE REDEEMED.

                    If less than all the Securities of any series, or any
          Tranche thereof, are to be redeemed, the particular Securities to be
          redeemed shall be selected by the Security Registrar from the
          Outstanding Securities of such series or Tranche not previously called
          for redemption, by such method as shall be provided for any particular
          series or Tranche, or, in the absence of any such provision, by such
          method of random selection as the Security Registrar shall deem fair
          and appropriate and which may, in any case, provide for the selection
          for redemption of portions (equal to the minimum authorized
          denomination for Securities of such series or Tranche or any integral
          multiple thereof) of the principal amount of Securities of such series
          or Tranche having a denomination larger than the minimum authorized
          denomination for Securities of such series or Tranche; provided,
          however, that if, as indicated in an Officer's Certificate, the
          Company shall have offered to purchase all or any principal amount of
          the Securities then Outstanding of any series, or any Tranche thereof,
          and less than all of such Securities as to which such offer was made
          shall 
   39
          have been tendered to the Company for such purchase, the Security
          Registrar, if so directed by Company Order, shall select for
          redemption all or any principal amount of such Securities which have
          not been so tendered.

                    The Security Registrar shall promptly notify the Company and
          the Trustee in writing of the Securities selected for redemption and,
          in the case of any Securities selected to be redeemed in part, the
          principal amount thereof to be redeemed.

                    For all purposes of this Indenture, unless the context
          otherwise requires, all provisions relating to the redemption of
          Securities shall relate, in the case of any Securities redeemed or to
          be redeemed only in part, to the portion of the principal amount of
          such Securities which has been or is to be redeemed.

          SECTION 404.  NOTICE OF REDEMPTION.

                    Notice of redemption shall be given in the manner provided
          in Section 106 to the Holders of the Securities to be redeemed not
          less than thirty (30) nor more than sixty (60) days prior to the
          Redemption Date.

                    All notices of redemption shall state:

                            (a) the Redemption Date,

                            (b) the Redemption Price,

                         (c) if less than all the Securities of any series or
                    Tranche are to be redeemed, the identification of the
                    particular Securities to be redeemed and the portion of the
                    principal amount of any Security to be redeemed in part,

                         (d) that on the Redemption Date the Redemption Price,
                    together with accrued interest, if any, to the Redemption
                    Date, will become due and payable upon each such Security to
                    be redeemed and, if applicable, that interest thereon will
                    cease to accrue on and after said date,

                         (e) the place or places where such Securities are to be
                    surrendered for payment of the Redemption Price and accrued
                    interest, if any, unless it shall have been specified as
                    contemplated by Section 301 with respect to such Securities
                    that such surrender shall not be required,

                         (f)  that the redemption is for a sinking or other
                    fund, if such is the case, and

                         (g)  such other matters as the Company shall deem
   40
                    desirable or appropriate.

                    With respect to any notice of redemption of Securities at
          the election of the Company, unless, upon the giving of such notice,
          such Securities shall be deemed to have been paid in accordance with
          Section 601, such notice may state that such redemption shall be
          conditional upon the receipt by the Paying Agent or Agents for such
          Securities, on or prior to the date fixed for such redemption, of
          money sufficient to pay the principal of and premium, if any, and
          interest, if any, on such Securities and that if such money shall not
          have been so received such notice shall be of no force or effect and
          the Company shall not be required to redeem such Securities. In the
          event that such notice of redemption contains such a condition and
          such money is not so received, the redemption shall not be made and
          within a reasonable time thereafter notice shall be given, in the
          manner in which the notice of redemption was given, that such money
          was not so received and such redemption was not required to be made,
          and the Paying Agent or Agents for the Securities otherwise to have
          been redeemed shall promptly return to the Holders thereof any of such
          Securities which had been surrendered for payment upon such
          redemption.

                    Notice of redemption of Securities to be redeemed at the
          election of the Company, and any notice of non-satisfaction of a
          condition for redemption as aforesaid, shall be given by the Company
          or, at the Company's request, by the Security Registrar in the name
          and at the expense of the Company. Notice of mandatory redemption of
          Securities shall be given by the Security Registrar in the name and at
          the expense of the Company.

          SECTION 405.  SECURITIES PAYABLE ON REDEMPTION DATE.

                    Notice of redemption having been given as aforesaid, and the
          conditions, if any, set forth in such notice having been satisfied,
          the Securities or portions thereof so to be redeemed shall, on the
          Redemption Date, become due and payable at the Redemption Price
          therein specified, and from and after such date (unless, in the case
          of an unconditional notice of redemption, the Company shall default in
          the payment of the Redemption Price and accrued interest, if any) such
          Securities or portions thereof, if interest-bearing, shall cease to
          bear interest. Upon surrender of any such Security for redemption in
          accordance with such notice, such Security or portion thereof shall be
          paid by the Company at the Redemption Price, together with accrued
          interest, if any, to the Redemption Date; provided, however, that no
          such surrender shall be a condition to such payment if so specified as
          contemplated by Section 301 with respect to such Security; and
          provided, further, that, except as otherwise specified as contemplated
          by Section 301 with respect to such Security, any installment of
          interest on any Security the Stated Maturity of which installment is
          on or prior to the Redemption Date shall be payable to the Holder of
          such Security, or one or 
   41
          more Predecessor Securities, registered as such at the close of
          business on the related Regular Record Date according to the terms of
          such Security and subject to the provisions of Section 307.

          SECTION 406.  SECURITIES REDEEMED IN PART.

                    Upon the surrender of any Security which is to be redeemed
          only in part at a Place of Payment therefor (with, if the Company or
          the Trustee so requires, due endorsement by, or a written instrument
          of transfer in form satisfactory to the Company and the Trustee duly
          executed by, the Holder thereof or his attorney duly authorized in
          writing), the Company shall execute, and the Trustee shall
          authenticate and deliver to the Holder of such Security, without
          service charge, a new Security or Securities of the same series and
          Tranche, of any authorized denomination requested by such Holder and
          of like tenor and in aggregate principal amount equal to and in
          exchange for the unredeemed portion of the principal of the Security
          so surrendered.

                                     ARTICLE FIVE

                                    COVENANTS

          SECTION 501.  PAYMENT OF SECURITIES.

                    The Company shall pay the principal of and premium, if any,
          and interest, if any, on the Securities of each series in accordance
          with the terms of such Securities and this Indenture.

          SECTION 502.  MAINTENANCE OF OFFICE OR AGENCY.

                    The Company shall maintain in each Place of Payment for the
          Securities of each series, or any Tranche thereof, an office or agency
          where payment of such Securities shall be made, where the registration
          of transfer or exchange of such Securities may be effected and where
          notices and demands to or upon the Company in respect of such
          Securities and this Indenture may be served. The Company shall give
          prompt written notice to the Trustee of the location, and any change
          in the location, of each such office or agency and prompt notice to
          the Holders of any such change in the manner specified in Section 106.
          If at any time the Company shall fail to maintain any such required
          office or agency in respect of Securities of any series, or any
          Tranche thereof, or shall fail to furnish the Trustee with the address
          thereof, payment of such Securities shall be made, registration of
          transfer or exchange thereof may be effected and notices and demands
          in respect thereof may be served at the Corporate Trust Office of the
          Trustee, and the Company hereby appoints the Trustee as its agent for
          all such purposes in any such event.

                    The Company may also from time to time designate one or 
   42
          more other offices or agencies with respect to the Securities of one
          or more series, or any Tranche thereof, for any or all of the
          foregoing purposes and may from time to time rescind such
          designations; provided, however, that, unless otherwise specified as
          contemplated by Section 301 with respect to the Securities of such
          series or Tranche, no such designation or rescission shall in any
          manner relieve the Company of its obligation to maintain an office or
          agency for such purposes in each Place of Payment for such Securities
          in accordance with the requirements set forth above. The Company shall
          give prompt written notice to the Trustee, and prompt notice to the
          Holders in the manner specified in Section 106, of any such
          designation or rescission and of any change in the location of any
          such other office or agency.

                    Anything herein to the contrary notwithstanding, any office
          or agency required by this Section may be maintained at an office of
          the Company, in which event the Company shall perform all functions to
          be performed at such office or agency.

          SECTION 503.  MONEY FOR SECURITIES PAYMENTS TO BE HELD IN TRUST.

                    If the Company shall at any time act as its own Paying Agent
          with respect to the Securities of any series, or any Tranche thereof,
          it shall, on or before each due date of the principal of and premium,
          if any, and interest, if any, on any of such Securities, segregate and
          hold in trust for the benefit of the Persons entitled thereto a sum
          sufficient to pay the principal and premium or interest so becoming
          due until such sums shall be paid to such Persons or otherwise
          disposed of as herein provided. The Company shall promptly notify the
          Trustee of any failure by the Company (or any other obligor on such
          Securities) to make any payment of principal of or premium, if any, or
          interest, if any, on such Securities.

                    Whenever the Company shall have one or more Paying Agents
          for the Securities of any series, or any Tranche thereof, it shall, on
          or before each due date of the principal of and premium, if any, and
          interest, if any, on such Securities, deposit with such Paying Agents
          sums sufficient (without duplication) to pay the principal and premium
          or interest so becoming due, such sums to be held in trust for the
          benefit of the Persons entitled to such principal, premium or
          interest, and (unless such Paying Agent is the Trustee) the Company
          shall promptly notify the Trustee of any failure by it so to act.

                    The Company shall cause each Paying Agent for the Securities
          of any series, or any Tranche thereof, other than the Company or the
          Trustee, to execute and deliver to the Trustee an instrument in which
          such Paying Agent shall agree with the Trustee, subject to the
          provisions of this Section, that such Paying Agent shall:

                         (a) hold all sums held by it for the payment of 
   43
                    the principal of and premium, if any, or interest, if any,
                    on such Securities in trust for the benefit of the Persons
                    entitled thereto until such sums shall be paid to such
                    Persons or otherwise disposed of as herein provided;

                         (b) give the Trustee notice of any failure by the
                    Company (or any other obligor upon such Securities) to make
                    any payment of principal of or premium, if any, or interest,
                    if any, on such Securities; and

                         (c) at any time during the continuance of any such
                    failure, upon the written request of the Trustee, forthwith
                    pay to the Trustee all sums so held in trust by such Paying
                    Agent and furnish to the Trustee such information as it
                    possesses regarding the names and addresses of the Persons
                    entitled to such sums.

                    The Company may at any time pay, or by Company Order direct
          any Paying Agent to pay, to the Trustee all sums held in trust by the
          Company or such Paying Agent, such sums to be held by the Trustee upon
          the same trusts as those upon which such sums were held by the Company
          or such Paying Agent and, if so stated in a Company Order delivered to
          the Trustee, in accordance with the provisions of Article Six; and,
          upon such payment by any Paying Agent to the Trustee, such Paying
          Agent shall be released from all further liability with respect to
          such money.

                    Any money deposited with the Trustee or any Paying Agent, or
          then held by the Company, in trust for the payment of the principal of
          and premium, if any, or interest, if any, on any Security and
          remaining unclaimed for two years after such principal and premium, if
          any, or interest, if any, has become due and payable shall be paid to
          the Company on Company Request, or, if then held by the Company, shall
          be discharged from such trust; and, upon such payment or discharge,
          the Holder of such Security shall, as an unsecured general creditor
          and not as the Holder of an Outstanding Security, look only to the
          Company for payment of the amount so due and payable and remaining
          unpaid (subject, however, to the provisions of Article Fourteen), and
          all liability of the Trustee or such Paying Agent with respect to such
          trust money, and all liability of the Company as trustee thereof,
          shall thereupon cease; provided, however, that the Trustee or such
          Paying Agent, before being required to make any such payment to the
          Company, may at the expense of the Company cause to be mailed, on one
          occasion only, notice to such Holder that such money remains unclaimed
          and that, after a date specified therein, which shall not be less than
          thirty (30) days from the date of such mailing, any unclaimed balance
          of such money then remaining will be paid to the Company.

          SECTION 504.  CORPORATE EXISTENCE.
   44


                    Subject to the rights of the Company under Article Ten, the
          Company shall do or cause to be done all things necessary to preserve
          and keep its corporate existence in full force and effect.

          SECTION 505.  MAINTENANCE OF PROPERTIES.

                    The Company shall cause (or, with respect to property owned
          in common with others, make reasonable effort to cause) all its
          properties used or useful in the conduct of its businesses, considered
          as a whole, to be maintained and kept in good condition, repair and
          working order and shall cause (or, with respect to property owned in
          common with others, make reasonable effort to cause) to be made such
          repairs, renewals, replacements, betterments and improvements thereof,
          as, in the judgment of the Company, may be necessary in order that the
          operation of such properties, considered as a whole, may be conducted
          in accordance with common industry practice; provided, however, that
          nothing in this Section shall prevent the Company from discontinuing,
          or causing the discontinuance of, the operation and maintenance of any
          of its properties; and provided, further, that nothing in this Section
          shall prevent the Company from selling, transferring or otherwise
          disposing of, or causing the sale, transfer or other disposition of,
          any of its properties.

          SECTION 506.  WAIVER OF CERTAIN COVENANTS.

                    The Company may omit in any particular instance to
          comply with any term, provision or condition set forth in

                         (a) any covenant or restriction specified with respect
                    to the Securities of any series, or any Tranche thereof, as
                    contemplated by Section 301 if before the time for such
                    compliance the Holders of a majority in aggregate principal
                    amount of the Outstanding Securities of all series and
                    Tranches with respect to which compliance with such covenant
                    or restriction is to be omitted, considered as one class,
                    shall, by Act of such Holders, either waive such compliance
                    in such instance or generally waive compliance with such
                    term, provision or condition; provided, however, that no
                    such waiver shall be effective as to any matters
                    contemplated in clause (a), (b) or (c) in Section 1102
                    without consent of the Holders specified in such Section;
                    and

                         (b) Section 504 or 505 or Article Ten if before the
                    time for such compliance the Holders of a majority in
                    principal amount of Securities Outstanding under this
                    Indenture shall, by Act of such Holders, either waive such
                    compliance in such instance or generally waive compliance
                    with such term, provision or condition;


   45


          but, in either case, no such waiver shall extend to or affect such
          term, provision or condition except to the extent so expressly waived,
          and, until such waiver shall become effective, the obligations of the
          Company and the duties of the Trustee in respect of any such term,
          provision or condition shall remain in full force and effect;
          provided, however, so long as a Washington Water Power Trust holds
          Securities of any series, such trust may not waive compliance or waive
          any default in compliance by the Company with any covenant or other
          term contained in this Indenture or the Securities of such series
          without the approval of the holders of a majority in aggregate
          liquidation amount of the outstanding Trust Securities issued by such
          trust (other than Trust Securities initially issued and sold to the
          Company), obtained as provided in the Declaration establishing such
          trust.

          SECTION 507.  ANNUAL OFFICER'S CERTIFICATE AS TO COMPLIANCE.

                    Not later than December 1 in each year, commencing December
          1, 1997, the Company shall deliver to the Trustee an Officer's
          Certificate which need not comply with Section 102, executed by the
          principal executive officer, the principal financial officer or the
          principal accounting officer of the Company, as to such officer's
          knowledge of the Company's compliance with all conditions and
          covenants under this Indenture, such compliance to be determined
          without regard to any period of grace or requirement of notice under
          this Indenture.

          SECTION 508.  RESTRICTION ON PAYMENT OF DIVIDENDS, ETC.

                    If, at any time (a) there shall have occurred and be
          continuing an Event of Default described in clause (a) or (b) of
          Section 701 with respect to the Securities of any series, (b) the
          Company shall have elected to extend any interest payment period as
          specified with respect to the Securities of any series, or any Tranche
          thereof, as contemplated by Section 301 and any such period, as so
          extended, shall be continuing, or (c) the Company shall be in default
          in respect of its payment or other obligations under the Guarantee
          relating to any Trust Securities (other than Trust Securities
          initially issued and sold to the Company), then the Company shall not
          (x) declare or pay any dividend on, make any distribution or
          liquidation payment with respect to, or redeem or purchase any of its
          capital stock, (y) make any payment of principal, premium, if any, or
          interest, if any, on or repay, repurchase or redeem any debt
          securities (including other Securities) that rank pari passu with or
          junior in right of payment to the Securities and (z) make any
          guarantee payments with respect to any of the foregoing (other than
          payments under the Guarantee relating to any of such Trust
          Securities); provided, however, that nothing in this Section shall be
          deemed to prohibit (i) dividends or distributions payable in shares of
          the Company's capital stock, (ii) reclassification of the Company's
          capital stock or exchange or 


   46


         conversion of shares of one class or series of the Company's capital
         stock into shares of another class or series of the Company's capital
         stock, (iii) purchases or other acquisitions of fractional interests in
         shares of the Company's capital stock and (iv) redemption, purchases or
         other acquisitions of the Company's capital stock in connection with
         the satisfaction by the Company of its obligations, under provisions of
         the Company's Restated Articles of Incorporation, as amended, under any
         direct purchase, dividend reinvestment, customer purchase or employee
         benefit plans or under any contract or security requiring the Company
         to purchase shares of its capital stock.

          SECTION 509.  WASHINGTON WATER POWER TRUSTS.

                    If Securities of any series are issued and delivered to a
          Washington Water Power Trust (or a trustee thereof) in connection with
          the issuance by such trust of Trust Securities, so long as such Trust
          Securities remain outstanding the Company shall (a) maintain 100%
          direct ownership, by the Company or any Affiliate thereof, of the
          Trust Securities initially issued and sold to the Company by such
          Washington Water Power Trust, except as otherwise provided in Section
          1005, and (b) use all reasonable efforts to cause such Washington
          Water Power Trust (i) to maintain its existence as a business trust,
          except in connection with a distribution of Securities, with the
          redemption, purchase or other acquisition and retirement of all Trust
          Securities of such trust or with certain mergers, consolidations or
          other business combinations, in each case as permitted by the
          Declaration establishing such Washington Water Power Trust, and (ii)
          to otherwise continue not to be treated as an association taxable as a
          corporation for United States federal income tax purposes.

                                   ARTICLE SIX

                           SATISFACTION AND DISCHARGE

          SECTION 601.  SATISFACTION AND DISCHARGE OF SECURITIES.

                    Any Security or Securities, or any portion of the principal
          amount thereof, shall be deemed to have been paid for all purposes of
          this Indenture, and the entire indebtedness of the Company in respect
          thereof shall be satisfied and discharged, if there shall have been
          irrevocably deposited with the Trustee or any Paying Agent (other than
          the Company), in trust:

                         (a)  money in an amount which shall be sufficient,
                    or

                         (b) in the case of a deposit made prior to the Maturity
                    of such Securities or portions thereof, Eligible
                    Obligations, which shall not contain provisions permitting
                    the redemption or other 


   47


                  prepayment thereof at the option of the issuer thereof, the
                  principal of and the interest on which when due, without any
                  regard to reinvestment thereof, will provide moneys which,
                  together with the money, if any, deposited with or held by the
                  Trustee or such Paying Agent, shall be sufficient, or

                         (c)  a combination of (a) or (b) which shall be
                    sufficient,

          to pay when due the principal of and premium, if any, and interest, if
          any, due and to become due on such Securities or portions thereof;
          provided, however, that in the case of the provision for payment or
          redemption of less than all the Securities of any series or Tranche,
          such Securities or portions thereof shall have been selected by the
          Security Registrar as provided herein and, in the case of a
          redemption, the notice requisite to the validity of such redemption
          shall have been given or irrevocable authority shall have been given
          by the Company to the Trustee to give such notice, under arrangements
          satisfactory to the Trustee; and provided, further, that the Company
          shall have delivered to the Trustee and such Paying Agent:

                         (x) if such deposit shall have been made prior to the
                    Maturity of such Securities, a Company Order stating that
                    the money and Eligible Obligations deposited in accordance
                    with this Section shall be held in trust, as provided in
                    Section 603;

                         (y) if Eligible Obligations shall have been deposited,
                    an Opinion of Counsel to the effect that such obligations
                    constitute Eligible Obligations and do not contain
                    provisions permitting the redemption or other prepayment
                    thereof at the option of the issuer thereof, and an opinion
                    of an independent public accountant of nationally recognized
                    standing, selected by the Company, to the effect that the
                    other requirements set forth in clause (b) above have been
                    satisfied; and

                         (z) if such deposit shall have been made prior to the
                    Maturity of such Securities, an Officer's Certificate
                    stating the Company's intention that, upon delivery of such
                    Officer's Certificate, its indebtedness in respect of such
                    Securities or portions thereof will have been satisfied and
                    discharged as contemplated in this Section.

                    Upon the deposit of money or Eligible Obligations, or both,
          in accordance with this Section, together with the documents required
          by clauses (x), (y) and (z) above, the Trustee shall, upon Company
          Request, acknowledge in writing that such 


   48


         Securities or portions thereof are deemed to have been paid for all
         purposes of this Indenture and that the entire indebtedness of the
         Company in respect thereof has been satisfied and discharged as
         contemplated in this Section. In the event that all of the conditions
         set forth in the preceding paragraph shall have been satisfied in
         respect of any Securities or portions thereof except that, for any
         reason, the Officer's Certificate specified in clause (z) (if otherwise
         required) shall not have been delivered, such Securities or portions
         thereof shall nevertheless be deemed to have been paid for all purposes
         of this Indenture, and the Holders of such Securities or portions
         thereof shall nevertheless be no longer entitled to the benefits
         provided by this Indenture or of any of the covenants of the Company
         under Article Five (except the covenants contained in Sections 502 and
         503) or any other covenants made in respect of such Securities or
         portions thereof as contemplated by Section 301, but the indebtedness
         of the Company in respect of such Securities or portions thereof shall
         not be deemed to have been satisfied and discharged prior to Maturity
         for any other purpose; and, upon Company Request, the Trustee shall
         acknowledge in writing that such Securities or portions thereof are
         deemed to have been paid for all purposes of this Indenture.

                    If payment at Stated Maturity of less than all of the
          Securities of any series, or any Tranche thereof, is to be provided
          for in the manner and with the effect provided in this Section, the
          Security Registrar shall select such Securities, or portions of
          principal amount thereof, in the manner specified by Section 403 for
          selection for redemption of less than all the Securities of a series
          or Tranche.

                    In the event that Securities which shall be deemed to have
          been paid for purposes of this Indenture, and, if such is the case, in
          respect of which the Company's indebtedness shall have been satisfied
          and discharged, all as provided in this Section, do not mature and are
          not to be redeemed within the sixty (60) day period commencing with
          the date of the deposit of moneys or Eligible Obligations, as
          aforesaid, the Company shall, as promptly as practicable, give a
          notice, in the same manner as a notice of redemption with respect to
          such Securities, to the Holders of such Securities to the effect that
          such deposit has been made and the effect thereof.

                    Notwithstanding that any Securities shall be deemed to have
          been paid for purposes of this Indenture, as aforesaid, the
          obligations of the Company and the Trustee in respect of such
          Securities under Sections 304, 305, 306, 404, 502, 503, 807 and 814
          and this Article shall survive.

                    The Company shall pay, and shall indemnify the Trustee or
          any Paying Agent with which Eligible Obligations shall have been
          deposited as provided in this Section against, any tax, fee or other
          charge imposed on or assessed against such Eligible 


   49


         Obligations or the principal or interest received in respect of such
         Eligible Obligations, including, but not limited to, any such tax
         payable by any entity deemed, for tax purposes, to have been created as
         a result of such deposit.

                    Anything herein to the contrary notwithstanding, (a) if, at
          any time after a Security would be deemed to have been paid for
          purposes of this Indenture, and, if such is the case, the Company's
          indebtedness in respect thereof would be deemed to have been satisfied
          and discharged, pursuant to this Section (without regard to the
          provisions of this paragraph), the Trustee or any Paying Agent, as the
          case may be, shall be required to return the money or Eligible
          Obligations, or combination thereof, deposited with it as aforesaid to
          the Company or its representative under any applicable Federal or
          State bankruptcy, insolvency or other similar law, such Security shall
          thereupon be deemed retroactively not to have been paid and any
          satisfaction and discharge of the Company's indebtedness in respect
          thereof shall retroactively be deemed not to have been effected, and
          such Security shall be deemed to remain Outstanding and (b) any
          satisfaction and discharge of the Company's indebtedness in respect of
          any Security shall be subject to the provisions of the last paragraph
          of Section 503.

          SECTION 602.  SATISFACTION AND DISCHARGE OF INDENTURE.

                    This Indenture shall upon Company Request cease to be of
          further effect (except as hereinafter expressly provided), and the
          Trustee, at the expense of the Company, shall execute such instruments
          as the Company shall reasonably request to evidence and acknowledge
          the satisfaction and discharge of this Indenture, when:

                         (a)  no Securities remain Outstanding hereunder;
                    and

                         (b)  the Company has paid or caused to be paid all
                    other sums payable hereunder by the Company;

          provided, however, that if, in accordance with the last paragraph of
          Section 601, any Security, previously deemed to have been paid for
          purposes of this Indenture, shall be deemed retroactively not to have
          been so paid, this Indenture shall thereupon be deemed retroactively
          not to have been satisfied and discharged, as aforesaid, and to remain
          in full force and effect, and the Company shall execute and deliver
          such instruments as the Trustee shall reasonably request to evidence
          and acknowledge the same.

                    Notwithstanding the satisfaction and discharge of this
          Indenture as aforesaid, the obligations of the Company and the Trustee
          under Sections 304, 305, 306, 404, 502, 503, 807 and 814 and this
          Article shall survive.


   50


                    Upon satisfaction and discharge of this Indenture as
          provided in this Section, the Trustee shall turn over to the Company
          any and all money, securities and other property then held by the
          Trustee for the benefit of the Holders of the Securities (other than
          money and Eligible Obligations held by the Trustee pursuant to Section
          603) and shall execute and deliver to the Company such instruments as,
          in the judgment of the Company, shall be necessary, desirable or
          appropriate to effect or evidence the satisfaction and discharge of
          this Indenture.

          SECTION 603.  APPLICATION OF TRUST MONEY.

                    Neither the Eligible Obligations nor the money deposited
          pursuant to Section 601, nor the principal or interest payments on any
          such Eligible Obligations, shall be withdrawn or used for any purpose
          other than, and shall be held in trust for, the payment of the
          principal of and premium, if any, and interest, if any, on the
          Securities or portions of principal amount thereof in respect of which
          such deposit was made, all subject, however, to the provisions of
          Section 503; provided, however, that any cash received from such
          principal or interest payments on such Eligible Obligations, if not
          then needed for such purpose, shall, to the extent practicable and
          upon Company Request and delivery to the Trustee of the documents
          referred to in clause (y) in the first paragraph of Section 601, be
          invested in Eligible Obligations of the type described in clause (b)
          in the first paragraph of Section 601 maturing at such times and in
          such amounts as shall be sufficient, together with any other moneys
          and the proceeds of any other Eligible Obligations then held by the
          Trustee, to pay when due the principal of and premium, if any, and
          interest, if any, due and to become due on such Securities or portions
          thereof on and prior to the Maturity thereof, and interest earned from
          such reinvestment shall be paid over to the Company as received, free
          and clear of any trust, lien or pledge under this Indenture; and
          provided, further, that any moneys held in accordance with this
          Section on the Maturity of all such Securities in excess of the amount
          required to pay the principal of and premium, if any, and interest, if
          any, then due on such Securities shall be paid over to the Company
          free and clear of any trust, lien or pledge under this Indenture; and
          provided, further, that if an Event of Default shall have occurred and
          be continuing, moneys to be paid over to the Company pursuant to this
          Section shall be held until such Event of Default shall have been
          waived or cured.


                                  ARTICLE SEVEN

                           EVENTS OF DEFAULT; REMEDIES

          SECTION 701.  EVENTS OF DEFAULT.

                    "EVENT OF DEFAULT", wherever used herein with respect 


   51


         to the Securities of any series, means any of the following events
         which shall have occurred and be continuing:

                    (a) failure to pay interest, if any, on any Security of such
               series within sixty (60) days after the same becomes due and
               payable (whether or not payment is prohibited by the provisions
               of Article Fourteen); provided, however, that no such failure
               shall constitute an "Event of Default" if the Company shall have
               made a valid extension of the interest payment period with
               respect to the Securities of such series if so provided with
               respect to such series as contemplated by Section 301; or

                    (b) failure to pay the principal of or premium, if any, on
               any Security of such series within three (3) Business Days after
               its Maturity (whether or not payment is prohibited by the
               provisions of Article Fourteen); provided, however, that no such
               failure shall constitute an "Event of Default" if the Company
               shall have made a valid extension of the Maturity of the
               Securities of such series if so provided with respect to such
               series as contemplated by Section 301; or

                    (c) failure to perform or breach of any covenant or warranty
               of the Company in this Indenture (other than a covenant or
               warranty a default in the performance of which or breach of which
               is elsewhere in this Section specifically dealt with or which has
               expressly been included in this Indenture solely for the benefit
               of one or more series of Securities other than such series) for a
               period of ninety (90) days after there has been given, by
               registered or certified mail, to the Company by the Trustee, or
               to the Company and the Trustee by the Holders of at least
               thirty-three per centum (33%) in principal amount of the
               Outstanding Securities of such series, a written notice
               specifying such default or breach and requiring it to be remedied
               and stating that such notice is a "NOTICE OF DEFAULT" hereunder,
               unless the Trustee, or the Trustee and the Holders of a principal
               amount of Securities of such series not less than the principal
               amount of Securities the Holders of which gave such notice, as
               the case may be, shall agree in writing to an extension of such
               period prior to its expiration; provided, however, that the
               Trustee, or the Trustee and the Holders of such principal amount
               of Securities of such series, as the case may be, shall be deemed
               to have agreed to an extension of such period if corrective
               action is initiated by the Company within such period and is
               being diligently pursued; or

                    (d) the entry by a court having jurisdiction in the premises
               of (i) a decree or order for relief in respect of the Company in
               an involuntary case or proceeding under any applicable Federal or
               State bankruptcy, insolvency, 


   52


                  reorganization or other similar law or (ii) a decree or order
                  adjudging the Company a bankrupt or insolvent, or approving as
                  properly filed a petition by one or more Persons other than
                  the Company seeking reorganization, arrangement, adjustment or
                  composition of or in respect of the Company under any
                  applicable Federal or State law, or appointing a custodian,
                  receiver, liquidator, assignee, trustee, sequestrator or other
                  similar official for the Company or for any substantial part
                  of its property, or ordering the winding-up or liquidation of
                  its affairs, and any such decree or order for relief or any
                  such other decree or order shall have remained unstayed and in
                  effect for a period of ninety (90) consecutive days; or

                           (e) the commencement by the Company of a voluntary
                  case or proceeding under any applicable Federal or State
                  bankruptcy, insolvency, reorganization or other similar law or
                  of any other case or proceeding to be adjudicated a bankrupt
                  or insolvent, or the consent by it to the entry of a decree or
                  order for relief in respect of the Company in a case or
                  proceeding under any applicable Federal or State bankruptcy,
                  insolvency, reorganization or other similar law or to the
                  commencement of any bankruptcy or insolvency case or
                  proceeding against it, or the filing by it of a petition or
                  answer or consent seeking reorganization or relief under any
                  applicable Federal or State law, or the consent by it to the
                  filing of such petition or to the appointment of or taking
                  possession by a custodian, receiver, liquidator, assignee,
                  trustee, sequestrator or similar official of the Company or of
                  any substantial part of its property, or the making by it of
                  an assignment for the benefit of creditors, or the admission
                  by it in writing of its inability to pay its debts generally
                  as they become due, or the authorization of such action by the
                  Board of Directors; or

                           (f) If such Securities shall have been issued and
                  delivered to a Washington Water Power Trust (or a trustee
                  thereof) in connection with the issuance by such trust of
                  Trust Securities and so long as such Trust Securities remain
                  outstanding, such Washington Water Power Trust shall have
                  voluntarily or involuntarily dissolved, wound-up its business
                  or otherwise terminated its existence except in connection
                  with (i) the distribution of Securities to holders of Trust
                  Securities in liquidation of their interests in such trust,
                  (ii) the redemption of all or the outstanding Trust Securities
                  of such trust or (iii) certain mergers, consolidations or
                  other business combinations, each as permitted by the
                  Declaration establishing such trust.

         SECTION 702.  ACCELERATION OF MATURITY; RESCISSION AND ANNULMENT.

                  If an Event of Default shall have occurred and be continuing
         with respect to Securities of any series at the time 


   53


         Outstanding, then in every such case the Trustee or the Holders of not
         less than thirty-three per centum (33%) in principal amount of the
         Outstanding Securities of such series may declare the principal amount
         (or, if any of the Securities of such series are Discount Securities,
         such portion of the principal amount of such Securities as may be
         specified in the terms thereof as contemplated by Section 301) of all
         of the Outstanding Securities of such series to be due and payable
         immediately, by a notice in writing to the Company (and to the Trustee
         if given by Holders), and upon such declaration such principal amount
         (or specified amount), together with premium, if any, and accrued
         interest, if any, thereon, shall become immediately due and payable;
         provided, however, that if an Event of Default shall have occurred and
         be continuing with respect to more than one series of Securities, the
         Trustee or the Holders of not less than thirty-three per centum (33%)
         in aggregate principal amount of the Outstanding Securities of all such
         series, considered as one class, may make such declaration of
         acceleration, and not the Holders of the Securities of any one of such
         series.

                    At any time after such a declaration of acceleration with
          respect to Securities of any series shall have been made, but before a
          judgment or decree for payment of the money due shall have been
          obtained by the Trustee as provided in this Article, the Event or
          Events of Default giving rise to such declaration of acceleration
          shall, without further act, be deemed to have been cured, and such
          declaration and its consequences shall, without further act, be deemed
          to have been rescinded and annulled, if

                           (a) the Company shall have paid or deposited with the
                  Trustee a sum sufficient to pay

                               (i)   all overdue interest, if any, on all
                           Securities of such series then Outstanding;

                               (ii)  the principal of and premium, if any,
                           on any Securities of such series then Outstanding
                           which have become due otherwise than by such
                           declaration of acceleration and interest thereon at
                           the rate or rates prescribed therefor in such
                           Securities;

                               (iii) interest upon overdue interest at the
                           rate or rates prescribed therefor in such Securities,
                           to the extent that payment of such interest is
                           lawful; and

                               (iv)  all amounts due to the Trustee under
                           Section 807; and

                           (b) any other Event or Events of Default with respect
                  to Securities of such series, other than the 


   54


                  non-payment of the principal of Securities of such series
                  which shall have become due solely by such declaration of
                  acceleration, shall have been cured or waived as provided in
                  Section 713.

          No such rescission shall affect any subsequent Event of Default or
          impair any right consequent thereon.

          SECTION 703.  COLLECTION OF INDEBTEDNESS AND SUITS FOR
                        ENFORCEMENT BY TRUSTEE.

                    If an Event of Default described in clause (a) or (b) of
          Section 701 shall have occurred and be continuing, the Company shall,
          upon demand of the Trustee, pay to it, for the benefit of the Holders
          of the Securities of the series with respect to which such Event of
          Default shall have occurred, the whole amount then due and payable on
          such Securities for principal and premium, if any, and interest, if
          any, and, in addition thereto, such further amount as shall be
          sufficient to cover any amounts due to the Trustee under Section 807.

                    If the Company shall fail to pay such amounts forthwith upon
          such demand, the Trustee, in its own name and as trustee of an express
          trust, may institute a judicial proceeding for the collection of the
          sums so due and unpaid, may prosecute such proceeding to judgment or
          final decree and may enforce the same against the Company or any other
          obligor upon such Securities and collect the moneys adjudged or
          decreed to be payable in the manner provided by law out of the
          property of the Company or any other obligor upon such Securities,
          wherever situated.

                    If an Event of Default with respect to Securities of any
          series shall have occurred and be continuing, the Trustee may in its
          discretion proceed to protect and enforce its rights and the rights of
          the Holders of Securities of such series by such appropriate judicial
          proceedings as the Trustee shall deem most effectual to protect and
          enforce any such rights, whether for the specific enforcement of any
          covenant or agreement in this Indenture or in aid of the exercise of
          any power granted herein, or to enforce any other proper remedy.

          SECTION 704.  APPLICATION OF MONEY COLLECTED.

                    Any money collected by the Trustee pursuant to this Article
          shall be applied in the following order, to the extent permitted by
          law, at the date or dates fixed by the Trustee and, in case of the
          distribution of such money on account of principal or premium, if any,
          or interest, if any, upon presentation of the Securities and the
          notation thereon of the payment if only partially paid and upon
          surrender thereof if fully paid:

                      FIRST:  To the payment of all amounts due the Trustee
               under Section 807;


   55


                      SECOND: To the payment of the whole amount then due and
               unpaid upon the Outstanding Securities for principal and premium,
               if any, and interest, if any, in respect of which or for the
               benefit of which such money has been collected; and in case such
               proceeds shall be insufficient to pay in full the whole amount so
               due and unpaid upon such Securities, then to the payment of such
               principal and interest, if any, thereon without any preference or
               priority, ratably according to the aggregate amount so due and
               unpaid, with any balance then remaining to the payment of
               premium, if any, and, if so specified as contemplated by Section
               301 with respect to the Securities of any series, or any Tranche
               thereof, interest, if any, on overdue premium, if any, and
               overdue interest, if any, ratably as aforesaid, all to the extent
               permitted by applicable law;

                      THIRD:  To the payment of the remainder, if any, to
               the Company or to whomsoever may be lawfully entitled to
               receive the same or as a court of competent jurisdiction may
               direct.

          SECTION 705.  TRUSTEE MAY FILE PROOFS OF CLAIM.

                    In case of the pendency of any receivership, insolvency,
          liquidation, bankruptcy, reorganization, arrangement, adjustment,
          composition or other judicial proceeding relative to the Company or
          any other obligor upon the Securities or the property of the Company
          or of such other obligor or their creditors, the Trustee (irrespective
          of whether the principal of the Securities shall then be due and
          payable as therein expressed or by declaration or otherwise and
          irrespective of whether the Trustee shall have made any demand on the
          Company for the payment of overdue principal or interest) shall be
          entitled and empowered, by intervention in such proceeding or
          otherwise,

                    (a) to file and prove a claim for the whole amount of
               principal, premium, if any, and interest, if any, owing and
               unpaid in respect of the Securities and to file such other papers
               or documents as may be necessary or advisable in order to have
               the claims of the Trustee (including any claim for amounts due to
               the Trustee under Section 807) and of the Holders allowed in such
               judicial proceeding, and

                    (b)  to collect and receive any moneys or other
               property payable or deliverable on any such claims and to
               distribute the same;

          and any custodian, receiver, assignee, trustee, liquidator,
          sequestrator or other similar official in any such judicial proceeding
          is hereby authorized by each Holder to make such payments to the
          Trustee and, in the event that the Trustee shall consent to the making
          of such payments directly to the Holders, 


   56



          to pay to the Trustee any amounts due it under Section 807.

                    Nothing herein contained shall be deemed to authorize the
          Trustee to authorize or consent to or accept or adopt on behalf of any
          Holder any plan of reorganization, arrangement, adjustment or
          composition affecting the Securities or the rights of any Holder
          thereof or to authorize the Trustee to vote in respect of the claim of
          any Holder in any such proceeding.

          SECTION 706.  TRUSTEE MAY ENFORCE CLAIMS WITHOUT POSSESSION OF
                        SECURITIES.

                    All rights of action and claims under this Indenture or on
          the Securities may be prosecuted and enforced by the Trustee without
          the possession of any of the Securities or the production thereof in
          any proceeding relating thereto, and any such proceeding instituted by
          the Trustee shall be brought in its own name as trustee of an express
          trust, and any recovery of judgment shall, after provision for the
          payment of the reasonable compensation, expenses, disbursements and
          advances of the Trustee, its agents and counsel, be for the ratable
          benefit of the Holders in respect of which such judgment has been
          recovered.

          SECTION 707.  LIMITATION ON SUITS.

                    No Holder shall have any right to institute any proceeding,
          judicial or otherwise, with respect to this Indenture, or for the
          appointment of a receiver or trustee, or for any other remedy
          hereunder, unless:

                    (a) such Holder shall have previously given written notice
               to the Trustee of a continuing Event of Default with respect to
               the Securities of such series;

                    (b) the Holders of a majority in aggregate principal amount
               of the Outstanding Securities of all series in respect of which
               an Event of Default shall have occurred and be continuing,
               considered as one class, shall have made written request to the
               Trustee to institute proceedings in respect of such Event of
               Default in its own name as Trustee hereunder;

                    (c) such Holder or Holders shall have offered to the Trustee
               reasonable indemnity against the costs, expenses and liabilities
               to be incurred in compliance with such request;

                    (d) the Trustee for sixty (60) days after its receipt of
               such notice, request and offer of indemnity shall have failed to
               institute any such proceeding; and

                    (e) no direction inconsistent with such written request
               shall have been given to the Trustee during such sixty (60) day
               period by the Holders of a majority in 


   57


                  aggregate principal amount of the Outstanding Securities of
                  all series in respect of which an Event of Default shall have
                  occurred and be continuing, considered as one class.

          it being understood and intended that no one or more of such Holders
          shall have any right in any manner whatever by virtue of, or by
          availing of, any provision of this Indenture to affect, disturb or
          prejudice the rights of any other of such Holders or to obtain or to
          seek to obtain priority or preference over any other of such Holders
          or to enforce any right under this Indenture, except in the manner
          herein provided and for the equal and ratable benefit of all of such
          Holders.

          SECTION 708.   UNCONDITIONAL RIGHT OF HOLDERS TO RECEIVE
                         PRINCIPAL, PREMIUM AND INTEREST.

                    Notwithstanding any other provision in this Indenture, the
          Holder of any Security shall have the right, which is absolute and
          unconditional, to receive payment of the principal of and premium, if
          any, and (subject to Section 307) interest, if any, on such Security
          on the Stated Maturity or Maturities expressed in such Security (or,
          in the case of redemption, on the Redemption Date) and to institute
          suit for the enforcement of any such payment, and such rights shall
          not be impaired without the consent of such Holder.

          SECTION 709.  RESTORATION OF RIGHTS AND REMEDIES.

                    If the Trustee or any Holder has instituted any proceeding
          to enforce any right or remedy under this Indenture and such
          proceeding shall have been discontinued or abandoned for any reason,
          or shall have been determined adversely to the Trustee or to such
          Holder, then and in every such case, subject to any determination in
          such proceeding, the Company, the Trustee and such Holder shall be
          restored severally and respectively to their former positions
          hereunder and thereafter all rights and remedies of the Trustee and
          such Holder shall continue as though no such proceeding had been
          instituted.

          SECTION 710.  RIGHTS AND REMEDIES CUMULATIVE.

                    Except as otherwise provided in the last paragraph of
          Section 306, no right or remedy herein conferred upon or reserved to
          the Trustee or to the Holders is intended to be exclusive of any other
          right or remedy, and every right and remedy shall, to the extent
          permitted by law, be cumulative and in addition to every other right
          and remedy given hereunder or now or hereafter existing at law or in
          equity or otherwise. The assertion or employment of any right or
          remedy hereunder, or otherwise, shall not prevent the concurrent
          assertion or employment of any other appropriate right or remedy.

          SECTION 711.  DELAY OR OMISSION NOT WAIVER.


   58


                    No delay or omission of the Trustee or of any Holder to
          exercise any right or remedy accruing upon any Event of Default shall
          impair any such right or remedy or constitute a waiver of any such
          Event of Default or an acquiescence therein. Every right and remedy
          given by this Article or by law to the Trustee or to the Holders may
          be exercised from time to time, and as often as may be deemed
          expedient, by the Trustee or by the Holders, as the case may be.

          SECTION 712.  CONTROL BY HOLDERS OF SECURITIES.

                    If an Event of Default shall have occurred and be continuing
          in respect of a series of Securities, the Holders of a majority in
          principal amount of the Outstanding Securities of such series shall
          have the right to direct the time, method and place of conducting any
          proceeding for any remedy available to the Trustee, or exercising any
          trust or power conferred on the Trustee with respect to the Securities
          of such series; provided, however, that if an Event of Default shall
          have occurred and be continuing with respect to more than one series
          of Securities, the Holders of a majority in aggregate principal amount
          of the Outstanding Securities of all such series, considered as one
          class, shall have the right to make such direction, and not the
          Holders of the Securities of any one of such series; and provided,
          further, that

                    (a) such direction shall not be in conflict with any rule of
               law or with this Indenture, and could not involve the Trustee in
               personal liability in circumstances where indemnity would not, in
               the Trustee's sole discretion, be adequate, and

                    (b) the Trustee may take any other action deemed proper by
               the Trustee which is not inconsistent with such direction.

          SECTION 713.  WAIVER OF PAST DEFAULTS.

                    The Holders of a majority in principal amount of the
          Outstanding Securities of any series may on behalf of the Holders of
          all the Securities of such series waive any past default with respect
          to such series hereunder and its consequences, except a default

                    (a)  in the payment of the principal of or premium, if
               any, or interest, if any, on any Security of such series, or

                    (b) in respect of a covenant or provision hereof which under
               Section 1102 cannot be modified or amended without the consent of
               the Holder of each Outstanding Security of such series affected;
               provided, however, that so long as a Washington Water Power Trust
               holds the Securities of any 


   59


                  series, such trust may not waive any past default without the
                  consent of a majority in aggregate liquidation amount of the
                  outstanding Trust Securities issued by such trust (other than
                  Trust Securities initially issued and sold to the Company)
                  obtained as provided in the Declaration establishing such
                  trust.

                    Upon any such waiver, such default shall cease to exist, and
          any and all Events of Default arising therefrom shall be deemed to
          have been cured, for every purpose of this Indenture; but no such
          waiver shall extend to any subsequent or other default or impair any
          right consequent thereon.

          SECTION 714.  UNDERTAKING FOR COSTS.

                    The Company and the Trustee agree, and each Holder by its
          acceptance thereof shall be deemed to have agreed, that any court may
          in its discretion require, in any suit for the enforcement of any
          right or remedy under this Indenture, or in any suit against the
          Trustee for any action taken, suffered or omitted by it as Trustee,
          the filing by any party litigant in such suit of an undertaking to pay
          the costs of such suit, and that such court may in its discretion
          assess reasonable costs, including reasonable attorneys' fees, against
          any party litigant in such suit, having due regard to the merits and
          good faith of the claims or defenses made by such party litigant; but
          the provisions of this Section shall not apply to any suit instituted
          by the Company, to any suit instituted by the Trustee, to any suit
          instituted by any Holder, or group of Holders, holding in the
          aggregate more than ten per centum (10%) in aggregate principal amount
          of the Outstanding Securities of all series in respect of which such
          suit may be brought, considered as one class, or to any suit
          instituted by any Holder for the enforcement of the payment of the
          principal of or premium, if any, or interest, if any, on any Security
          on or after the Stated Maturity or Maturities expressed in such
          Security (or, in the case of redemption, on or after the Redemption
          Date).

          SECTION 715.  WAIVER OF STAY OR EXTENSION LAWS.

                    To the full extent that it may lawfully so agree, the
          Company shall not at any time set up, claim or otherwise seek to take
          the benefit or advantage of any stay or extension law, now or
          hereafter in effect, in order to prevent or hinder the enforcement of
          this Indenture; and the Company, for itself and all who may claim
          under it, so far as it or they now or hereafter may lawfully do so,
          hereby waives the benefit of all such laws.

          SECTION 716.  ACTION BY HOLDERS OF CERTAIN TRUST SECURITIES.

                    If the Securities of any series shall be held by the
          Institutional Trustee of a Washington Water Power Trust and if such
          Institutional Trustee, as such Holder, shall have failed to 


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         exercise any of the rights and remedies available under this Indenture
         to the Holders of such Securities, the holders of the Trust Securities
         issued by such trust (other than Trust Securities initially issued and
         sold to the Company) shall have and may exercise all such rights and
         remedies, to the same extent as if such holders of such Trust
         Securities held a principal amount of Securities of such series equal
         to the liquidation amount of such Trust Securities, without first
         proceeding against such trustee or trust. Notwithstanding the
         foregoing, in the case of an Event of Default described in clause (a)
         or (b) of Section 701, each holder of such Trust Securities shall have
         and may exercise all rights available to the Institutional Trustee
         under Section 708 as the Holder of the Securities of such series.

                    If action shall have been taken by both the Holders and the
          holders of Trust Securities (other than Trust Securities initially
          issued and sold to the Company) to exercise such rights as
          contemplated in the preceding paragraph, the action taken by holders
          of Trust Securities shall control. Any such action taken by registered
          holders of Trust Securities shall be evidenced to the Trustee in the
          same manner as an Act of Holders, as provided in Section 104(a). The
          Trustee shall be entitled to rely on the books and records of the
          related Washington Water Power Trust in determining the identities of
          the holders of Trust Securities (and, upon the reasonable request of
          the Trustee, the Company, as the sponsor of such trust, shall, at its
          own expense, promptly provide copies of applicable portions of such
          books and records to the Trustee to the extent reasonably necessary to
          enable the Trustee to make such determination).


                                  ARTICLE EIGHT

                                   THE TRUSTEE

          SECTION 801.  CERTAIN DUTIES AND RESPONSIBILITIES.

                    (a)  Except during the continuance of an Event of
          Default with respect to Securities of any series,

                         (i)  the Trustee undertakes to perform, with respect to
                    Securities of such series, such duties and only such duties
                    as are specifically set forth in this Indenture, and no
                    implied covenants or obligations shall be read into this
                    Indenture against the Trustee; and

                         (ii) in the absence of bad faith on its part, the
                    Trustee may, with respect to Securities of such series,
                    conclusively rely, as to the truth of the statements and the
                    correctness of the opinions expressed therein, upon
                    certificates or opinions furnished to the Trustee and
                    conforming to the requirements of this Indenture; 


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                  but in the case of any such certificates or opinions which by
                  any provisions hereof are specifically required to be
                  furnished to the Trustee, the Trustee shall be under a duty to
                  examine the same to determine whether or not they conform to
                  the requirements of this Indenture.

                  (b) In case an Event of Default with respect to Securities of
         any series shall have occurred and be continuing, the Trustee shall
         exercise, with respect to Securities of such series, such of the rights
         and powers vested in it by this Indenture, and use the same degree of
         care and skill in their exercise, as a prudent man would exercise or
         use under the circumstances in the conduct of his own affairs.

                  (c) No provision of this Indenture shall be construed to
         relieve the Trustee from liability for its own negligent action, its
         own negligent failure to act, or its own willful misconduct, except
         that:

                      (i)   this subsection shall not be construed to
                  limit the effect of subsection (a) of this Section;

                      (ii)  the Trustee shall not be liable for any error of
                  judgment made in good faith by a Responsible Officer, unless
                  it shall be proved that the Trustee was negligent in
                  ascertaining the pertinent facts;

                      (iii) the Trustee shall not be liable with respect to
                  any action taken or omitted to be taken by it in good faith in
                  accordance with the direction of the Holders of a majority in
                  principal amount of the Outstanding Securities of any one or
                  more series, as provided herein, relating to the time, method
                  and place of conducting any proceeding for any remedy
                  available to the Trustee, or exercising any trust or power
                  conferred upon the Trustee, under this Indenture with respect
                  to the Securities of such series; and

                      (iv)  no provision of this Indenture shall require the
                  Trustee to expend or risk its own funds or otherwise incur any
                  financial liability in the performance of any of its duties
                  hereunder, or in the exercise of any of its rights or powers,
                  if it shall have reasonable grounds for believing that
                  repayment of such funds or adequate indemnity against such
                  risk or liability is not reasonably assured to it.

                  (d) Whether or not therein expressly so provided, every
         provision of this Indenture relating to the conduct or affecting the
         liability of or affording protection to the Trustee shall be subject to
         the provisions of this Section.


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          SECTION 802.  NOTICE OF DEFAULTS.

                    The Trustee shall give notice of any default hereunder with
          respect to the Securities of any series to the Holders of Securities
          of such series in the manner and to the extent required to do so by
          the Trust Indenture Act, unless such default shall have been cured or
          waived; provided, however, that in the case of any default of the
          character specified in Section 701(c), no such notice to Holders shall
          be given until at least seventy-five (75) days after the occurrence
          thereof; and provided, further, that, subject to the provisions of
          Section 801, the Trustee shall not be deemed to have knowledge of such
          default unless either (i) a Responsible Officer of the Trustee shall
          have actual knowledge of such default or (ii) the Trustee shall have
          received written notice thereof from the Company or any Holder. For
          the purpose of this Section, the term "DEFAULT" means any event which
          is, or after notice or lapse of time, or both, would become, an Event
          of Default.

          SECTION 803.  CERTAIN RIGHTS OF TRUSTEE.

                    Subject to the provisions of Section 801 and to the
          applicable provisions of the Trust Indenture Act:

                    (a) the Trustee may rely and shall be protected in acting or
               refraining from acting upon any resolution, certificate,
               statement, instrument, opinion, report, notice, request,
               direction, consent, order, bond, debenture, note, other evidence
               of indebtedness or other paper or document believed by it to be
               genuine and to have been signed, sent or presented by the proper
               party or parties;

                    (b) any request, direction or act of the Company mentioned
               herein shall be sufficiently evidenced by a Company Request or
               Company Order, or as otherwise expressly provided herein, and any
               resolution of the Board of Directors may be sufficiently
               evidenced by a Board Resolution;

                    (c) whenever in the administration of this Indenture the
               Trustee shall deem it desirable that a matter be proved or
               established prior to taking, suffering or omitting any action
               hereunder, the Trustee (unless other evidence is specifically
               prescribed herein) may, in the absence of bad faith on its part,
               rely upon an Officer's Certificate;

                    (d) the Trustee may consult with counsel and the written
               advice of such counsel or any Opinion of Counsel shall be full
               and complete authorization and protection in respect of any
               action taken, suffered or omitted by it hereunder in good faith
               and in reliance thereon;

                    (e) the Trustee shall be under no obligation to exercise any
               of the rights or powers vested in it by this 


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                  Indenture at the request or direction of any Holder pursuant
                  to this Indenture, unless such Holder shall have offered to
                  the Trustee reasonable security or indemnity against the
                  costs, expenses and liabilities which might be incurred by it
                  complying with such request or direction;

                           (f) the Trustee shall not be bound to make any
                  investigation into the facts or matters stated in any
                  resolution, certificate, statement, instrument, opinion,
                  report, notice, request, direction, consent, order, bond,
                  debenture, note, other evidence of indebtedness or other paper
                  or document, but the Trustee, in its discretion, may make such
                  further inquiry or investigation into such facts or matters as
                  it may see fit, and, if the Trustee shall determine to make
                  such further inquiry or investigation, it shall (subject to
                  applicable legal requirements) be entitled to examine, during
                  normal business hours, the books, records and premises of the
                  Company, personally or by agent or attorney;

                           (g) the Trustee may execute any of the trusts or
                  powers hereunder or perform any duties hereunder either
                  directly or by or through agents or attorneys and the Trustee
                  shall not be responsible for any misconduct or negligence on
                  the part of any agent or attorney appointed with due care by
                  it hereunder; and

                           (h) the Trustee shall not be charged with knowledge
                  of any Event of Default with respect to the Securities of any
                  series for which it is acting as Trustee unless either (i) a
                  Responsible Officer of the Trustee shall have actual knowledge
                  of the Event of Default or (ii) written notice of such Event
                  of Default shall have been given to the Trustee by the
                  Company, any other obligor on such Securities or by any Holder
                  of such Securities.

          SECTION 804.  NOT RESPONSIBLE FOR RECITALS OR ISSUANCE OF
                        SECURITIES.

                  The recitals contained herein and in the Securities (except
         the Trustee's certificates of authentication) shall be taken as the
         statements of the Company, and neither the Trustee nor any
         Authenticating Agent assumes any responsibility for their correctness.
         The Trustee makes no representations as to the validity or sufficiency
         of this Indenture or of the Securities. Neither the Trustee nor any
         Authenticating Agent shall be accountable for the use or application by
         the Company of Securities or the proceeds thereof.

          SECTION 805.  MAY HOLD SECURITIES.

                  Each of the Trustee, any Authenticating Agent, any Paying
         Agent, any Security Registrar or any other agent of the 


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         Company or the Trustee, in its individual or any other capacity, may
         become the owner or pledgee of Securities and, subject to Sections 808
         and 813, may otherwise deal with the Company with the same rights it
         would have if it were not such Trustee, Authenticating Agent, Paying
         Agent, Security Registrar or other agent.

         SECTION 806.  MONEY HELD IN TRUST.

                  Money held by the Trustee in trust hereunder need not be
         segregated from other funds, except to the extent required by law. The
         Trustee shall be under no liability for interest on or investment of
         any money received by it hereunder except as expressly provided herein
         or otherwise agreed with, and for the sole benefit of, the Company.

         SECTION 807.  COMPENSATION AND REIMBURSEMENT.

                  The Company shall

                  (a) pay to the Trustee from time to time reasonable
             compensation for all services rendered by it hereunder (which
             compensation shall not be limited by any provision of law in regard
             to the compensation of a trustee of an express trust);

                  (b) except as otherwise expressly provided herein, reimburse
             the Trustee upon its request for all reasonable expenses,
             disbursements and advances reasonably incurred or made by the
             Trustee in accordance with any provision of this Indenture
             (including the reasonable compensation and the expenses and
             disbursements of its agents and counsel), except to the extent that
             any such expense, disbursement or advance may be attributable to
             its negligence, wilful misconduct or bad faith; and

                  (c) indemnify the Trustee and hold it harmless from and
             against any loss, liability or expense reasonably incurred by it
             arising out of or in connection with the acceptance or
             administration of the trust or trusts hereunder or the performance
             of its duties hereunder, including the reasonable costs and
             expenses of defending itself against any claim or liability in
             connection with the exercise or performance of any of its powers or
             duties hereunder, except to the extent any such loss, liability or
             expense may be attributable to its negligence, wilful misconduct or
             bad faith.

                  As security for the performance of the obligations of the
         Company under this Section, the Trustee shall have a lien prior to the
         Securities upon all property and funds held or collected by the Trustee
         as such other than property and funds held in trust under Section 603
         (except moneys payable to the 


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         Company as provided in Section 603). "TRUSTEE" for purposes of this
         Section shall include any predecessor Trustee; provided, however, that
         the negligence, wilful misconduct or bad faith of any Trustee hereunder
         shall not affect the rights of any other Trustee hereunder.

         SECTION 808. DISQUALIFICATION; CONFLICTING INTERESTS.

                  If the Trustee shall have or acquire any conflicting interest
         within the meaning of the Trust Indenture Act, it shall either
         eliminate such conflicting interest or resign to the extent, in the
         manner and with the effect, and subject to the conditions, provided in
         the Trust Indenture Act and this Indenture. For purposes of Section
         310(b)(1) of the Trust Indenture Act and to the extent permitted
         thereby, the Trustee, in its capacity as trustee in respect of the
         Securities of any series, shall not be deemed to have a conflicting
         interest arising from its capacity as trustee in respect of the
         Securities of any other series.

         SECTION 809.  CORPORATE TRUSTEE REQUIRED; ELIGIBILITY.

                  There shall at all times be a Trustee hereunder which shall be

                  (a) a corporation organized and doing business under the laws
             of the United States, any State or Territory thereof or the
             District of Columbia, authorized under such laws to exercise
             corporate trust powers, having a combined capital and surplus of at
             least Fifty Million Dollars ($50,000,000) and subject to
             supervision or examination by Federal, State, Territorial or
             District of Columbia authority, or

                  (b) if and to the extent permitted by the Commission by rule,
             regulation or order upon application, a corporation or other Person
             organized and doing business under the laws of a foreign
             government, authorized under such laws to exercise corporate trust
             powers, having a combined capital and surplus of at least Fifty
             Million Dollars ($50,000,000) or the Dollar equivalent of the
             applicable foreign currency and subject to supervision or
             examination by authority of such foreign government or a political
             subdivision thereof substantially equivalent to supervision or
             examination applicable to United States institutional trustees,

         and, in either case, qualified and eligible under this Article and the
         Trust Indenture Act. If such corporation publishes reports of condition
         at least annually, pursuant to law or to the requirements of such
         supervising or examining authority, then for the purposes of this
         Section, the combined capital and surplus of such corporation shall be
         deemed to be its combined capital and surplus as set forth in its most
         recent report of condition so 


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          published. If at any time the Trustee shall cease to be eligible in
          accordance with the provisions of this Section, it shall resign
          immediately in the manner and with the effect hereinafter specified in
          this Article.

          SECTION 810.  RESIGNATION AND REMOVAL; APPOINTMENT OF SUCCESSOR.

                    (a) No resignation or removal of the Trustee and no
          appointment of a successor Trustee pursuant to this Article shall
          become effective until the acceptance of appointment by the successor
          Trustee in accordance with the applicable requirements of Section 811.

                    (b) The Trustee may resign at any time with respect to the
          Securities of one or more series by giving written notice thereof to
          the Company. If the instrument of acceptance by a successor Trustee
          required by Section 811 shall not have been delivered to the Trustee
          within thirty (30) days after the giving of such notice of
          resignation, the resigning Trustee may petition any court of competent
          jurisdiction for the appointment of a successor Trustee with respect
          to the Securities of such series.

                    (c) The Trustee may be removed at any time with respect to
          the Securities of any series by Act of the Holders of a majority in
          principal amount of the Outstanding Securities of such series
          delivered to the Trustee and to the Company.

                    (d)  If at any time:

                         (i)   the Trustee shall fail to comply with Section 808
                    after written request therefor by the Company or by any
                    Holder who has been a bona fide Holder for at least six
                    months, or

                         (ii)  the Trustee shall cease to be eligible under
                    Section 809 and shall fail to resign after written request
                    therefor by the Company or by any such Holder, or

                         (iii) the Trustee shall become incapable of acting or
                    shall be adjudged a bankrupt or insolvent or a receiver of
                    the Trustee or of its property shall be appointed or any
                    public officer shall take charge or control of the Trustee
                    or of its property or affairs for the purpose of
                    rehabilitation, conservation or liquidation,

          then, in any such case, (x) the Company by a Board Resolution may
          remove the Trustee with respect to all Securities or (y) subject to
          Section 714, any Holder who has been a bona fide Holder for at least
          six (6) months may, on behalf of itself and all others similarly
          situated, petition any court of competent jurisdiction for the removal
          of the Trustee with respect to all Securities and the appointment of a
          successor Trustee or Trustees.


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                    (e) If the Trustee shall resign, be removed or become
          incapable of acting, or if a vacancy shall occur in the office of
          Trustee for any cause (other than as contemplated in clause (y) in
          subsection (d) of this Section), with respect to the Securities of one
          or more series, the Company, by a Board Resolution, shall take prompt
          steps to appoint a successor Trustee or Trustees with respect to the
          Securities of that or those series (it being understood that any such
          successor Trustee may be appointed with respect to the Securities of
          one or more or all of such series and that at any time there shall be
          only one Trustee with respect to the Securities of any particular
          series) and shall comply with the applicable requirements of Section
          811. If, within one (1) year after such resignation, removal or
          incapability, or the occurrence of such vacancy, a successor Trustee
          with respect to the Securities of any series shall be appointed by Act
          of the Holders of a majority in principal amount of the Outstanding
          Securities of such series delivered to the Company and the retiring
          Trustee, the successor Trustee so appointed shall, forthwith upon its
          acceptance of such appointment in accordance with the applicable
          requirements of Section 811, become the successor Trustee with respect
          to the Securities of such series and to that extent supersede the
          successor Trustee appointed by the Company. If no successor Trustee
          with respect to the Securities of any series shall have been so
          appointed by the Company or the Holders and accepted appointment in
          the manner required by Section 811, any Holder who has been a bona
          fide Holder of a Security of such series for at least six (6) months
          may, on behalf of itself and all others similarly situated, petition
          any court of competent jurisdiction for the appointment of a successor
          Trustee with respect to the Securities of such series.

                    (f) So long as no event which is, or after notice or lapse
          of time, or both, would become, an Event of Default shall have
          occurred and be continuing, if the Company shall have delivered to the
          Trustee with respect to the Securities of one or more series (i) a
          Board Resolution appointing a successor Trustee or Trustees with
          respect to that or those series, effective as of a date specified
          therein, and (ii) an instrument of acceptance of such appointment,
          effective as of such date, by such successor Trustee or Trustees in
          accordance with Section 811, the Trustee or Trustees with respect to
          that or those series shall be deemed to have resigned as contemplated
          in subsection (b) of this Section, the successor Trustee or Trustees
          shall be deemed to have been appointed pursuant to subsection (e) of
          this Section and such appointment shall be deemed to have been
          accepted as contemplated in Section 811, all as of such date, and all
          other provisions of this Section and Section 811 shall be applicable
          to such resignation, appointment and acceptance except to the extent
          inconsistent with this subsection (f).

                    (g) The Company shall give notice of each resignation 


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         and each removal of the Trustee with respect to the Securities of any
         series and each appointment of a successor Trustee with respect to the
         Securities of any series by mailing written notice of such event by
         first-class mail, postage prepaid, to all Holders of Securities of such
         series as their names and addresses appear in the Security Register.
         Each notice shall include the name of the successor Trustee with
         respect to the Securities of such series and the address of its
         corporate trust office.

         SECTION 811.  ACCEPTANCE OF APPOINTMENT BY SUCCESSOR.

                  (a) In case of the appointment hereunder of a successor
         Trustee with respect to the Securities of all series, every such
         successor Trustee so appointed shall execute, acknowledge and deliver
         to the Company and to the retiring Trustee an instrument accepting such
         appointment, and thereupon the resignation or removal of the retiring
         Trustee shall become effective and such successor Trustee, without any
         further act, shall become vested with all the rights, powers, trusts
         and duties of the retiring Trustee; but, on the request of the Company
         or the successor Trustee, such retiring Trustee shall, upon payment of
         all sums owed to it, execute and deliver an instrument transferring to
         such successor Trustee all the rights, powers and trusts of the
         retiring Trustee and shall duly assign, transfer and deliver to such
         successor Trustee all property and money held by such retiring Trustee
         hereunder.

                  (b) In case of the appointment hereunder of a successor
         Trustee with respect to the Securities of one or more (but not all)
         series, the Company, the retiring Trustee and each successor Trustee
         with respect to the Securities of such series shall execute and deliver
         an indenture supplemental hereto wherein each successor Trustee shall
         accept such appointment and which (1) shall contain such provisions as
         shall be necessary or desirable to transfer and confirm to, and to vest
         in, each successor Trustee all the rights, powers, trusts and duties of
         the retiring Trustee with respect to the Securities of that or those
         series to which the appointment of such successor Trustee relates, (2)
         if the retiring Trustee is not retiring with respect to all Securities,
         shall contain such provisions as shall be deemed necessary or desirable
         to confirm that all the rights, powers, trusts and duties of the
         retiring Trustee with respect to the Securities of that or those series
         as to which the retiring Trustee is not retiring shall continue to be
         vested in the retiring Trustee and (3) shall add to or change any of
         the provisions of this Indenture as shall be necessary to provide for
         or facilitate the administration of the trusts hereunder by more than
         one Trustee, it being understood that nothing herein or in such
         supplemental indenture shall constitute such Trustees co-trustees of
         the same trust and that each such Trustee shall be trustee of a trust
         or trusts hereunder separate and apart from any trust or trusts
         hereunder administered by any other such Trustee; and upon the
         execution and delivery of such supplemental 


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         indenture the resignation or removal of the retiring Trustee shall
         become effective to the extent provided therein and each such successor
         Trustee, without any further act, shall become vested with all the
         rights, powers, trusts and duties of the retiring Trustee with respect
         to the Securities of that or those series to which the appointment of
         such successor Trustee relates; but, on request of the Company or any
         successor Trustee, such retiring Trustee, upon payment of all sums owed
         to it, shall duly assign, transfer and deliver to such successor
         Trustee all property and money held by such retiring Trustee hereunder
         with respect to the Securities of that or those series to which the
         appointment of such successor Trustee relates.

                    (c) Upon request of any such successor Trustee, the Company
          shall execute any instruments which fully vest in and confirm to such
          successor Trustee all rights, powers and trusts referred to in
          subsection (a) or (b) of this Section, as the case may be.

                    (d) No successor Trustee shall accept its appointment unless
          at the time of such acceptance such successor Trustee shall be
          qualified and eligible under this Article.

          SECTION 812.  MERGER, CONVERSION, CONSOLIDATION OR SUCCESSION TO
                        BUSINESS.

                    Any corporation into which the Trustee may be merged or
          converted or with which it may be consolidated, or any corporation
          resulting from any merger, conversion or consolidation to which the
          Trustee shall be a party, or any corporation succeeding to all or
          substantially all the corporate trust business of the Trustee, shall
          be the successor of the Trustee hereunder, provided such corporation
          shall be otherwise qualified and eligible under this Article, without
          the execution or filing of any paper or any further act on the part of
          any of the parties hereto. In case any Securities shall have been
          authenticated, but not delivered, by the Trustee then in office, any
          successor by merger, conversion or consolidation to such
          authenticating Trustee may adopt such authentication and deliver the
          Securities so authenticated with the same effect as if such successor
          Trustee had itself authenticated such Securities.

          SECTION 813.  PREFERENTIAL COLLECTION OF CLAIMS AGAINST COMPANY.

                    If the Trustee shall be or become a creditor of the Company
          or any other obligor upon the Securities (other than by reason of a
          relationship described in Section 311(b) of the Trust Indenture Act),
          the Trustee shall be subject to any and all applicable provisions of
          the Trust Indenture Act regarding the collection of claims against the
          Company or such other obligor. For purposes of Section 311(b) of the
          Trust Indenture Act:

                    (a) the term "CASH TRANSACTION" means any transaction 


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             in which full payment for goods or securities sold is made within 
             seven days after delivery of the goods or securities in currency or
             in checks or other orders drawn upon banks or bankers and payable 
             upon demand; and

                  (b) the term "SELF-LIQUIDATING PAPER" means any draft, bill of
             exchange, acceptance or obligation which is made, drawn, negotiated
             or incurred by the Company or such obligor for the purpose of
             financing the purchase, processing, manufacturing, shipment,
             storage or sale of goods, wares or merchandise and which is secured
             by documents evidencing title to, possession of, or a lien upon,
             the goods, wares or merchandise or the receivables or proceeds
             arising from the sale of the goods, wares or merchandise previously
             constituting the security, provided the security is received by the
             Trustee simultaneously with the creation of the creditor
             relationship with the Company or such obligor arising from the
             making, drawing, negotiating or incurring of the draft, bill of
             exchange, acceptance or obligation.

          SECTION 814.  APPOINTMENT OF AUTHENTICATING AGENT.

                    The Trustee may appoint an Authenticating Agent or Agents
          with respect to the Securities of one or more series, or any Tranche
          thereof, which shall be authorized to act on behalf of the Trustee to
          authenticate Securities of such series or Tranche issued upon original
          issuance, exchange, registration of transfer or partial redemption
          thereof or pursuant to Section 306, and Securities so authenticated
          shall be entitled to the benefits of this Indenture and shall be valid
          and obligatory for all purposes as if authenticated by the Trustee
          hereunder. Wherever reference is made in this Indenture to the
          authentication and delivery of Securities by the Trustee or the
          Trustee's certificate of authentication, such reference shall be
          deemed to include authentication and delivery on behalf of the Trustee
          by an Authenticating Agent and a certificate of authentication
          executed on behalf of the Trustee by an Authenticating Agent. Each
          Authenticating Agent shall be acceptable to the Company and shall at
          all times be a corporation organized and doing business under the laws
          of the United States, any State or Territory thereof or the District
          of Columbia or the Commonwealth of Puerto Rico, authorized under such
          laws to act as Authenticating Agent, having a combined capital and
          surplus of not less than Fifty Million Dollars ($50,000,000) and
          subject to supervision or examination by Federal or State authority.
          If such Authenticating Agent publishes reports of condition at least
          annually, pursuant to law or to the requirements of said supervising
          or examining authority, then for the purposes of this Section, the
          combined capital and surplus of such Authenticating Agent shall be
          deemed to be its combined capital and surplus as set forth in its most
          recent report of condition so published. If at any time an
          Authenticating Agent shall cease to be eligible in accordance with the
          provisions of this Section, such 


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         Authenticating Agent shall resign immediately in the manner and with
         the effect specified in this Section.

                    Any corporation into which an Authenticating Agent may be
          merged or converted or with which it may be consolidated, or any
          corporation resulting from any merger, conversion or consolidation to
          which such Authenticating Agent shall be a party, or any corporation
          succeeding to all or substantially all of the corporate agency or
          corporate trust business of an Authenticating Agent, shall continue to
          be an Authenticating Agent, provided such corporation shall be
          otherwise eligible under this Section, without the execution or filing
          of any paper or any further act on the part of the Trustee or the
          Authenticating Agent.

                    An Authenticating Agent may resign at any time by giving
          written notice thereof to the Trustee and to the Company. The Trustee
          may at any time terminate the agency of an Authenticating Agent by
          giving written notice thereof to such Authenticating Agent and to the
          Company. Upon receiving such a notice of resignation or upon such a
          termination, or in case at any time such Authenticating Agent shall
          cease to be eligible in accordance with the provisions of this
          Section, the Trustee may appoint a successor Authenticating Agent
          which shall be acceptable to the Company. Any successor Authenticating
          Agent upon acceptance of its appointment hereunder shall become vested
          with all the rights, powers and duties of its predecessor hereunder,
          with like effect as if originally named as an Authenticating Agent. No
          successor Authenticating Agent shall be appointed unless eligible
          under the provisions of this Section.

                    The Company agrees to pay to each Authenticating Agent from
          time to time reasonable compensation for its services under this
          Section.

                    The provisions of Sections 308, 804 and 805 shall be
          applicable to each Authenticating Agent.

                    If an appointment with respect to the Securities of one or
          more series, or any Tranche thereof, shall be made pursuant to this
          Section, the Securities of such series or Tranche may have endorsed
          thereon, in addition to the Trustee's certificate of authentication,
          an alternate certificate of authentication substantially in the
          following form:

                    This is one of the Securities of the series designated
          therein referred to in the within-mentioned Indenture.


                                            --------------------------
                                            As Trustee



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                                         By
                                           ------------------------
                                           As Authenticating Agent


                                         By
                                           ------------------------
                                           Authorized Officer

                    If all of the Securities of a series may not be originally
          issued at one time, and if the Trustee does not have an office capable
          of authenticating Securities upon original issuance located in a Place
          of Payment where the Company wishes to have Securities of such series
          authenticated upon original issuance, the Trustee, if so requested by
          the Company in writing (which writing need not comply with Section 102
          and need not be accompanied by an Opinion of Counsel), shall appoint,
          in accordance with this Section and in accordance with such procedures
          as shall be acceptable to the Trustee, an Authenticating Agent having
          an office in a Place of Payment designated by the Company with respect
          to such series of Securities.


                                  ARTICLE NINE

                LISTS OF HOLDERS; REPORTS BY TRUSTEE AND COMPANY

          SECTION 901.  LISTS OF HOLDERS.

                    Semiannually, not later than June 30 and December 31 in each
          year, commencing June 30, 1997, and within 30 days of such other times
          as the Trustee may request in writing, the Company shall furnish or
          cause to be furnished to the Trustee information as to the names and
          addresses of the Holders, as of a date no more than fifteen (15) days
          prior to the date such information is so furnished, and the Trustee
          shall preserve such information and similar information received by it
          in any other capacity and afford to the Holders access to information
          so preserved by it, all to such extent, if any, and in such manner as
          shall be required by the Trust Indenture Act; provided, however, that
          no such list need be furnished so long as the Trustee shall be the
          Security Registrar.

          SECTION 902.  REPORTS BY TRUSTEE AND COMPANY.

                    Not later than July 15 in each year, commencing July 15,
          1997, the Trustee shall transmit to the Holders, the Commission and
          each securities exchange upon which any Securities are listed, a
          report, dated as of the next preceding May 15, with respect to any
          events and other matters described in Section 313(a) of the Trust
          Indenture Act, in such manner and to the extent required by the Trust
          Indenture Act. The Trustee shall 


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         transmit to the Holders, the Commission and each securities exchange
         upon which any Securities are listed, and the Company shall file with
         the Trustee (within thirty (30) days after filing with the Commission
         in the case of reports which pursuant to the Trust Indenture Act must
         be filed with the Commission and furnished to the Trustee) and transmit
         to the Holders, such other information, reports and other documents, if
         any, at such times and in such manner, as shall be required by the
         Trust Indenture Act. The Company shall notify the Trustee of the
         listing of any Securities on any securities exchange.


                                   ARTICLE TEN

                        CONSOLIDATION, MERGER, CONVEYANCE
                                OR OTHER TRANSFER

          SECTION 1001.  COMPANY MAY CONSOLIDATE, ETC., ONLY ON CERTAIN
                         TERMS.

                  The Company shall not consolidate with or merge into any other
         corporation, or convey or otherwise transfer, or lease, all of its
         properties, as or substantially as an entirety, to any Person, unless:

                  (a) the corporation formed by such consolidation or into which
             the Company is merged or the Person which acquires by conveyance or
             other transfer, or which leases (for a term extending beyond the
             last Stated Maturity of the Securities then Outstanding), all of
             the properties of the Company, as or substantially as an entirety,
             shall be a corporation organized and existing under the laws of the
             United States, any State or Territory thereof or the District of
             Columbia or under the laws of Canada or any Province thereof (such
             corporation being hereinafter sometimes called the "SUCCESSOR
             CORPORATION") and shall expressly assume, by an indenture
             supplemental hereto, executed and delivered to the Trustee, in form
             reasonably satisfactory to the Trustee, the due and punctual
             payment of the principal of and premium, if any, and interest, if
             any, on all the Securities then Outstanding and the performance and
             observance of every covenant and condition of this Indenture to be
             performed or observed by the Company; and

                  (b) the Company shall have delivered to the Trustee an
             Officer's Certificate and an Opinion of Counsel, each of which
             shall state that such consolidation, merger, conveyance or other
             transfer or lease, and such supplemental indenture, comply with
             this Article and that all conditions precedent herein provided for
             relating to such transaction have been complied with.

                  Anything in this Indenture to the contrary 


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         notwithstanding, the conveyance or other transfer by the Company of all
         of its facilities (a) for the generation of electric energy, (b) for
         the transmission of electric energy or (c) for the distribution of
         electric energy and/or natural gas, in each case considered alone, or
         all of its facilities described in clauses (a) and (b), considered
         together, or all of its facilities described in clauses (b) and (c),
         considered together, shall in no event be deemed to constitute a
         conveyance or other transfer of all the properties of the Company, as
         or substantially as an entirety, unless, immediately following such
         conveyance or other transfer, the Company shall own no properties in
         the other such categories of property not so conveyed or otherwise
         transferred. The character of particular facilities shall be determined
         by reference to the Uniform System of Accounts prescribed for public
         utilities and licensees subject to the Federal Power Act, as amended,
         to the extent applicable.

         SECTION 1002.  SUCCESSOR CORPORATION SUBSTITUTED.

                  Upon any consolidation or merger or any conveyance or other
         transfer of all the properties of the Company, as or substantially as
         an entirety, in accordance with Section 1001, the Successor Corporation
         shall succeed to, and be substituted for, and may exercise every power
         and right of, the Company under this Indenture with the same effect as
         if such Successor Corporation had been named as the "Company" herein.
         Without limiting the generality of the foregoing, the Successor
         Corporation may execute and deliver to the Trustee, and thereupon the
         Trustee shall, subject to the provisions of Article Three, authenticate
         and deliver, Securities. All Securities so executed by the Successor
         Corporation, and authenticated and delivered by the Trustee, shall in
         all respects be entitled to the benefits provided by this Indenture
         equally and ratably with all Securities executed, authenticated and
         delivered prior to the time such consolidation, merger, conveyance or
         other transfer became effective.

         SECTION 1003.  RELEASE OF COMPANY UPON CONVEYANCE OR OTHER
                        TRANSFER.

                  In the case of a conveyance or other transfer to any Person or
         Persons as contemplated in Section 1001, upon the satisfaction of all
         the conditions specified in Section 1001 the Company (such term being
         used in this Section without giving effect to such transaction) shall
         be released and discharged from all obligations and covenants under
         this Indenture and on and under all Securities then Outstanding (unless
         the Company shall have delivered to the Trustee an instrument in which
         it shall waive such release and discharge) and the Trustee shall
         acknowledge in writing that the Company has been so released and
         discharged.

         SECTION 1004.  MERGER INTO COMPANY.


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                    Nothing in this Indenture shall be deemed to prevent or
          restrict any consolidation or merger after the consummation of which
          the Company would be the surviving or resulting corporation or any
          conveyance or other transfer, or lease of any part of the properties
          of the Company which does not constitute the entirety, or
          substantially the entirety, thereof.

          SECTION 1005.  TRANSFER OF LESS THAN THE ENTIRETY.

               (a) If the Company shall have conveyed or otherwise transferred
          any part of its properties which does not constitute the entirety, or
          substantially the entirety, thereof to another corporation meeting the
          requirements set forth in clause (a) of the first paragraph of Section
          1001 and if:

                    (i)  the transferee of such part of the properties of the
               Company shall have executed and delivered to the Trustee an
               indenture supplemental hereto, in form reasonably satisfactory to
               the Trustee, which contains an assumption by such transferee of
               the due and punctual payment of the principal of and premium, if
               any, and interest, if any, on all the Securities then Outstanding
               and the performance and observance of every covenant and
               condition of this Indenture to be performed or observed by the
               Company;

                    (ii) there shall have been delivered to the Trustee an
               Independent Expert's Certificate

                         (A) describing the property so conveyed or otherwise
                    transferred (such description of property to be made by
                    reference either to specific items, units and/or elements of
                    property or portions thereof, on a percentage or Dollar
                    basis, or to properties reflected in specified accounts in
                    the Company's books of account or portions thereof, on a
                    Dollar basis); provided, however, that such property shall
                    be identified in such certificate as facilities for the
                    generation, transmission or distribution of electric energy
                    or for the storage, transportation or distribution of
                    natural gas;

                         (B)  stating, in the judgment of the signers, the
                    Fair Value to the transferee of the property so
                    conveyed or otherwise transferred;

                         (C) stating an amount equal to seventy percent (70%) of
                    the amount stated pursuant to clause (B) above;

                         (D)  stating an amount equal to the aggregate
                    principal amount of the Securities then Outstanding;
                    and


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                         (E) stating that the amount stated pursuant to clause
                    (D) above does not exceed the amount stated pursuant to
                    clause (C) above;

                    (iii) the Company shall have assigned or otherwise
               transferred to such transferee all Trust Securities (initially
               issued and sold to the Company) then outstanding, and such
               transferee shall have expressly assumed all obligations under all
               Guarantees; and

                    (iv)  the Company shall have delivered to the Trustee an
               Officer's Certificate and an Opinion of Counsel each of which
               shall state that such conveyance or other transfer and such
               supplemental indenture comply with this Section and that all
               conditions precedent relating to such transactions provided for
               in this Section and otherwise in this Indenture have been
               complied with;

          then, upon the satisfaction of all such conditions,

                    (x)   the Company shall be released and discharged from all
               obligations and covenants under this Indenture and on and under
               all Securities then Outstanding (unless the Company shall have
               delivered to the Trustee an instrument in which it shall waive
               such release and discharge), and the Trustee shall acknowledge in
               writing that the Company has been so released and discharged; and

                    (y)   if the Company shall have been released and discharged
               as contemplated in clause (x) above, such transferee shall
               succeed to, and be substituted for, and may exercise every right
               and power of, the Company under this Indenture with the same
               effect as if such transferee had been named the "Company" herein;
               and without limiting the generality of the foregoing, such
               transferee shall be deemed a "Successor Corporation" for purposes
               of Section 1002 and for all other purposes of this Indenture.

               (b)  For purposes of this Section:

                         "FAIR VALUE" means the fair value of such property so
                    conveyed or otherwise transferred as may be determined by
                    reference to (a) the amount which would be likely to be
                    obtained in an arm's-length transaction with respect to such
                    property between an informed and willing buyer and an
                    informed and willing seller, under no compulsion,
                    respectively, to buy or sell, (b) the amount of investment
                    with respect to such property which, together with a
                    reasonable return thereon, would be likely to be recovered
                    through ordinary business operations or otherwise, (c) the
                    cost, accumulated depreciation and replacement cost with
                    respect to such 


   77


                  property and/or (d) any other relevant factors; provided,
                  however, that (x) the Fair Value of property shall be
                  determined without deduction for any mortgage, deed of trust,
                  pledge, security interest, encumbrance, lease, reservation,
                  restriction, servitude, charge or similar right or any other
                  lien of any kind on such property and (y) the Fair Value to
                  the transferee of any property shall not reflect any reduction
                  relating to the fact that such property may be of less value
                  to a Person which is not the owner or operator of the property
                  or any portion thereof than to a Person which is such owner or
                  operator. Fair Value may be determined, without physical
                  inspection, by the use of accounting and engineering records
                  and other data maintained by the Company or the transferee or
                  otherwise available to the Expert certifying the same.


                           "INDEPENDENT EXPERT'S CERTIFICATE" means a
                  certificate signed by an authorized officer of the transferee
                  and by an Independent Expert (which Independent Expert shall
                  be selected either by the board of directors or by an
                  authorized officer of the transferee, the execution of such
                  certificate by such authorized officer to be conclusive
                  evidence of such selection) and delivered to the Trustee. For
                  purposes of this definition, (a) "EXPERT" means a Person which
                  is an engineer, appraiser or other expert and which, with
                  respect to any certificate to be signed by such Person and
                  delivered to the Trustee, is qualified to pass upon the matter
                  set forth in such certificate; (b) "ENGINEER" means a Person
                  engaged in the engineering profession or otherwise qualified
                  to pass upon engineering matters (including, but not limited
                  to, a Person licensed as a professional engineer, whether or
                  not then engaged in the engineering profession) and (c)
                  "APPRAISER" means a Person engaged in the business of
                  appraising property or otherwise qualified to pass upon the
                  Fair Value or fair market value of property. "INDEPENDENT",
                  when applied to any Expert, means such a Person who (a) is in
                  fact independent, (b) does not have any direct material
                  financial interest in the transferee or in any obligor upon
                  the Securities or in any Affiliate of the transferee, (c) is
                  not connected with the transferee or such other obligor as an
                  officer, employee, promoter, underwriter, trustee, partner,
                  director or any person performing similar functions and (d) is
                  approved by the Trustee in the exercise of reasonable care.


                                 ARTICLE ELEVEN


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                             SUPPLEMENTAL INDENTURES

          SECTION 1101.  SUPPLEMENTAL INDENTURES WITHOUT CONSENT OF
                         HOLDERS.

                    Without the consent of any Holders, the Company and the
          Trustee, at any time and from time to time, may enter into one or more
          indentures supplemental hereto, in form reasonably satisfactory to the
          Trustee, for any of the following purposes:

                         (a) to evidence the succession of another Person to the
                    Company and the assumption by any such successor of the
                    covenants of the Company herein and in the Securities, all
                    as provided in Article Ten; or

                         (b) to add one or more covenants of the Company or
                    other provisions for the benefit of all Holders or for the
                    benefit of the Holders of, or to remain in effect only so
                    long as there shall be Outstanding, Securities of one or
                    more specified series, or one or more specified Tranches
                    thereof, or to surrender any right or power herein conferred
                    upon the Company; or

                         (c) to change or eliminate any provision of this
                    Indenture or to add any new provision to this Indenture;
                    provided, however, that if such change, elimination or
                    addition shall adversely affect the interests of the Holders
                    of Securities of any series or Tranche in any material
                    respect, such change, elimination or addition shall become
                    effective with respect to such series or Tranche only when
                    no Security of such series or Tranche remains Outstanding;
                    or

                         (d)  to provide collateral security for the
                    Securities; or

                         (e)  to establish the form or terms of Securities
                    of any series or Tranche as contemplated by Sections
                    201 and 301; or

                         (f) to provide for the authentication and delivery of
                    bearer securities and coupons appertaining thereto
                    representing interest, if any, thereon and for the
                    procedures for the registration, exchange and replacement
                    thereof and for the giving of notice to, and the
                    solicitation of the vote or consent of, the holders thereof,
                    and for any and all other matters incidental thereto; or

                         (g) to evidence and provide for the acceptance of
                    appointment hereunder by a successor Trustee with respect to
                    the Securities of one or more series and to add to or change
                    any of the provisions of this 


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                  Indenture as shall be necessary to provide for or facilitate
                  the administration of the trusts hereunder by more than one
                  Trustee, pursuant to the requirements of Section 811(b); or

                           (h) to provide for the procedures required to permit
                  the Company to utilize, at its option, a non- certificated
                  system of registration for all, or any series or Tranche of,
                  the Securities; or

                           (i) to change any place or places where (1) the
                  principal of and premium, if any, and interest, if any, on all
                  or any series of Securities, or any Tranche thereof, shall be
                  payable, (2) all or any series of Securities, or any Tranche
                  thereof, may be surrendered for registration of transfer, (3)
                  all or any series of Securities, or any Tranche thereof, may
                  be surrendered for exchange and (4) notices and demands to or
                  upon the Company in respect of all or any series of
                  Securities, or any Tranche thereof, and this Indenture may be
                  served; or

                           (j) to cure any ambiguity, to correct or supplement
                  any provision herein which may be defective or inconsistent
                  with any other provision herein; or to make any other changes
                  to the provisions hereof or to add other provisions with
                  respect to matters or questions arising under this Indenture,
                  provided that such other changes or additions shall not
                  adversely affect the interests of the Holders of Securities of
                  any series or Tranche in any material respect.

                  Without limiting the generality of the foregoing, if the Trust
         Indenture Act as in effect at the date of the execution and delivery of
         this Indenture or at any time thereafter shall be amended and

                           (x) if any such amendment shall require one or more
                  changes to any provisions hereof or the inclusion herein of
                  any additional provisions, or shall by operation of law be
                  deemed to effect such changes or incorporate such provisions
                  by reference or otherwise, this Indenture shall be deemed to
                  have been amended so as to conform to such amendment to the
                  Trust Indenture Act, and the Company and the Trustee may,
                  without the consent of any Holders, enter into an indenture
                  supplemental hereto to evidence such amendment hereof; or

                           (y) if any such amendment shall permit one or more
                  changes to, or the elimination of, any provisions hereof
                  which, at the date of the execution and delivery hereof or at
                  any time thereafter, are required by the 


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                  Trust Indenture Act to be contained herein or are contained
                  herein to reflect any provisions of the Trust Indenture Act as
                  in effect at such date, this Indenture shall be deemed to have
                  been amended to effect such changes or elimination, and the
                  Company and the Trustee may, without the consent of any
                  Holders, enter into an indenture supplemental hereto to amend
                  this Indenture to effect such changes or elimination.

         SECTION 1102.  SUPPLEMENTAL INDENTURES WITH CONSENT OF HOLDERS.

                  Subject to the provisions of Section 1101, with the consent of
         the Holders of a majority in aggregate principal amount of the
         Securities of all series then Outstanding under this Indenture,
         considered as one class, by Act of said Holders delivered to the
         Company and the Trustee, the Company and the Trustee may enter into an
         indenture or indentures supplemental hereto for the purpose of adding
         any provisions to, or changing in any manner or eliminating any of the
         provisions of, this Indenture; provided, however, that if there shall
         be Securities of more than one series Outstanding hereunder and if a
         proposed supplemental indenture shall directly affect the rights of the
         Holders of Securities of one or more, but less than all, of such
         series, then the consent only of the Holders of a majority in aggregate
         principal amount of the Outstanding Securities of all series so
         directly affected, considered as one class, shall be required; and
         provided, further, that if the Securities of any series shall have been
         issued in more than one Tranche and if the proposed supplemental
         indenture shall directly affect the rights of the Holders of Securities
         of one or more, but less than all, of such Tranches, then the consent
         only of the Holders of a majority in aggregate principal amount of the
         Outstanding Securities of all Tranches so directly affected, considered
         as one class, shall be required; and provided, further, that no such
         supplemental indenture shall:

                  (a) change the Stated Maturity of the principal of, or any
             installment of principal of or interest on, any Security other than
             pursuant to the terms thereof, or reduce the principal amount
             thereof or the rate of interest thereon (or the amount of any
             installment of interest thereon) or change the method of
             calculating such rate or reduce any premium payable thereon, or
             reduce the amount of the principal of any Discount Security that
             would be due and payable upon a declaration of acceleration of the
             Maturity thereof pursuant to Section 702, or change the coin or
             currency (or other property), in which any Security or premium, if
             any, or interest, if any, thereon is payable, or impair the right
             to institute suit for the enforcement of any such payment on or
             after the Maturity of any Security, without, in any such case, the
             consent of the Holder of such Security; or


   81


                  (b) reduce the percentage in principal amount of the
             Outstanding Securities of any series, or any Tranche thereof, the
             consent of the Holders of which is required for any such
             supplemental indenture, or the consent of the Holders of which is
             required for any waiver of compliance with any provision of this
             Indenture or of any default hereunder and its consequences, or
             reduce the requirements of Section 1204 for quorum or voting,
             without, in any such case, the consent of the Holder of each
             Outstanding Security of such series or Tranche; or

                  (c) modify any of the provisions of this Section, Section 506
             or Section 713 with respect to the Securities of any series or any
             Tranche thereof (except to increase the percentages in principal
             amount referred to in this Section or such other Sections or to
             provide that other provisions of this Indenture cannot be modified
             or waived without the consent of the Holders of all Securities of
             such series or Tranche) without, in any such case, the consent of
             the Holder of each Outstanding Security of such series or Tranche;
             provided, however, that this clause shall not be deemed to require
             the consent of any Holder with respect to changes in the references
             to "the Trustee" and concomitant changes in this Section, or the
             deletion of this proviso, in accordance with the requirements of
             Sections 811(b) and 1101(g).

                    A supplemental indenture which (x) changes or eliminates any
          covenant or other provision of this Indenture which has expressly been
          included solely for the benefit of the Holders of, or which is to
          remain in effect only so long as there shall be Outstanding,
          Securities of one or more specified series, or one or more Tranches
          thereof, or (y) modifies the rights of the Holders of Securities of
          such series or Tranches with respect to such covenant or other
          provision, shall be deemed not to affect the rights under this
          Indenture of the Holders of Securities of any other series or Tranche.

                    Notwithstanding the foregoing, so long as the Securities of
          any series are held by a Washington Water Power Trust, the trustee may
          not consent to a supplemental indenture under this Section 1102
          without the prior consent, obtained as provided in the Declaration
          establishing such trust of the holders of a majority in aggregate
          liquidation amount of all Trust Securities issued by such trust (other
          than Trust Securities initially issued and sold to the Company), or,
          in the case of changes described in clauses (a), (b) and (c) above,
          100% in aggregate liquidation amount of all such Trust Securities then
          outstanding.


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                    It shall not be necessary for any Act of Holders under this
          Section to approve the particular form of any proposed supplemental
          indenture, but it shall be sufficient if such Act shall approve the
          substance thereof.

          SECTION 1103.  EXECUTION OF SUPPLEMENTAL INDENTURES.

                    In executing, or accepting the additional trusts created by,
          any supplemental indenture permitted by this Article or the
          modifications thereby of the trusts created by this Indenture, the
          Trustee shall be entitled to receive, and (subject to Section 801)
          shall be fully protected in relying upon, an Opinion of Counsel
          stating that the execution of such supplemental indenture is
          authorized or permitted by this Indenture. The Trustee may, but shall
          not be obligated to, enter into any such supplemental indenture which
          affects the Trustee's own rights, duties, immunities or liabilities
          under this Indenture or otherwise.

          SECTION 1104.  EFFECT OF SUPPLEMENTAL INDENTURES.

                    Upon the execution and delivery of any supplemental
          indenture under this Article this Indenture shall be modified in
          accordance therewith, and such supplemental indenture shall form a
          part of this Indenture for all purposes; and every Holder of
          Securities theretofore or thereafter authenticated and delivered
          hereunder shall be bound thereby. Any supplemental indenture permitted
          by this Article may restate this Indenture in its entirety, and, upon
          the execution and delivery thereof, any such restatement shall
          supersede this Indenture as theretofore in effect for all purposes.

          SECTION 1105.  CONFORMITY WITH TRUST INDENTURE ACT.

                    Every supplemental indenture executed pursuant to this
          Article shall conform to the requirements of the Trust Indenture Act.

          SECTION 1106.  REFERENCE IN SECURITIES TO SUPPLEMENTAL
                         INDENTURES.

                    Securities of any series, or any Tranche thereof,
          authenticated and delivered after the execution of any supplemental
          indenture pursuant to this Article may, and shall if required by the
          Trustee, bear a notation in form approved by the Trustee as to any
          matter provided for in such supplemental indenture. If the Company
          shall so determine, new Securities of any series, or any Tranche
          thereof, so modified as to conform, in the opinion of the Trustee and
          the Company, to any such supplemental indenture may be prepared and
          executed by the Company and authenticated and delivered by the Trustee
          in exchange for Outstanding Securities of such series or Tranche.


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          SECTION 1107.  MODIFICATION WITHOUT SUPPLEMENTAL INDENTURE.

                    To the extent, if any, that the terms of any particular
          series of Securities shall have been established in or pursuant to a
          Board Resolution or an Officer's Certificate pursuant to a
          supplemental indenture or a Board Resolution as contemplated by
          Section 301, and not in a supplemental indenture, additions to,
          changes in or the elimination of any of such terms may be effected by
          means of a supplemental Board Resolution or a supplemental Officer's
          Certificate, as the case may be, delivered to, and accepted by, the
          Trustee; provided, however, that such supplemental Board Resolution or
          supplemental Officer's Certificate shall not be accepted by the
          Trustee or otherwise be effective unless all conditions set forth in
          this Indenture which would be required to be satisfied if such
          additions, changes or elimination were contained in a supplemental
          indenture shall have been appropriately satisfied. Upon the acceptance
          thereof by the Trustee, any such supplemental Board Resolution or
          supplemental Officer's Certificate shall be deemed to be a
          "supplemental indenture" for purposes of Section 1104 and 1106.


                                 ARTICLE TWELVE

                   MEETINGS OF HOLDERS; ACTION WITHOUT MEETING

          SECTION 1201.  PURPOSES FOR WHICH MEETINGS MAY BE CALLED.

                    A meeting of Holders of Securities of one or more, or all,
          series, or any Tranche or Tranches thereof, may be called at any time
          and from time to time pursuant to this Article to make, give or take
          any request, demand, authorization, direction, notice, consent, waiver
          or other action provided by this Indenture to be made, given or taken
          by Holders of Securities of such series or Tranches.

          SECTION 1202.  CALL, NOTICE AND PLACE OF MEETINGS.

                    (a) The Trustee may at any time call a meeting of Holders of
          Securities of one or more, or all, series, or any Tranche or Tranches
          thereof, for any purpose specified in Section 1201, to be held at such
          time and (except as provided in subsection (b) of this Section) at
          such place in the Borough of Manhattan, The City of New York, as the
          Trustee shall determine, or, with the approval of the Company, at any
          other place. Notice of every such meeting, setting forth the time and
          the place of such meeting and in general terms the action proposed to
          be taken at such meeting, shall be given, in the manner provided in
          Section 106, not less than twenty-one (21) nor more than one hundred
          eighty (180) days prior to the date fixed for the meeting.

                    (b) The Trustee may be asked to call a meeting of the


   84


          Holders of Securities of one or more, or all, series, or any Tranche
          or Tranches thereof, by the Company or by the Holders of thirty-three
          per centum (33%) in aggregate principal amount of all of such series
          and Tranches, considered as one class, for any purpose specified in
          Section 1201, by written request setting forth in reasonable detail
          the action proposed to be taken at the meeting. If the Trustee shall
          have been asked by the Company to call such a meeting, the Company
          shall determine the time and place for such meeting and may call such
          meeting by giving notice thereof in the manner provided in subsection
          (a) of this Section, or shall direct the Trustee, in the name and at
          the expense of the Company, to give such notice. If the Trustee shall
          have been asked to call such a meeting by Holders in accordance with
          this subsection (b), and the Trustee shall not have given the notice
          of such meeting within twenty-one (21) days after receipt of such
          request or shall not thereafter proceed to cause the meeting to be
          held as provided herein, then the Holders of Securities of such series
          and Tranches, in the principal amount above specified, may determine
          the time and the place in the Borough of Manhattan, The City of New
          York, or in such other place as shall be determined or approved by the
          Company, for such meeting and may call such meeting for such purposes
          by giving notice thereof as provided in subsection (a) of this
          Section.

                    (c) Any meeting of Holders of Securities of one or more, or
          all, series, or any Tranche or Tranches thereof, shall be valid
          without notice if the Holders of all Outstanding Securities of such
          series or Tranches are present in person or by proxy and if
          representatives of the Company and the Trustee are present, or if
          notice is waived in writing before or after the meeting by the Holders
          of all Outstanding Securities of such series, or any Tranche or
          Tranches thereof, or by such of them as are not present at the meeting
          in person or by proxy, and by the Company and the Trustee.

          SECTION 1203.  PERSONS ENTITLED TO VOTE AT MEETINGS.

                    To be entitled to vote at any meeting of Holders of
          Securities of one or more, or all, series, or any Tranche or Tranches
          thereof, a Person shall be (a) a Holder of one or more Outstanding
          Securities of such series or Tranches, or (b) a Person appointed by an
          instrument in writing as proxy for a Holder or Holders of one or more
          Outstanding Securities of such series or Tranches by such Holder or
          Holders. The only Persons who shall be entitled to attend any meeting
          of Holders of Securities of any series or Tranche shall be the Persons
          entitled to vote at such meeting and their counsel, any
          representatives of the Trustee and its counsel and any representatives
          of the Company and its counsel.

          SECTION 1204.  QUORUM; ACTION.

                    The Persons entitled to vote a majority in aggregate


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          principal amount of the Outstanding Securities of the series and
          Tranches with respect to which a meeting shall have been called as
          hereinbefore provided, considered as one class, shall constitute a
          quorum for a meeting of Holders of Securities of such series and
          Tranches; provided, however, that if any action is to be taken at such
          meeting which this Indenture expressly provides may be taken by the
          Holders of a specified percentage, which is less than a majority, in
          principal amount of the Outstanding Securities of such series and
          Tranches, considered as one class, the Persons entitled to vote such
          specified percentage in principal amount of the Outstanding Securities
          of such series and Tranches, considered as one class, shall constitute
          a quorum. In the absence of a quorum within one hour of the time
          appointed for any such meeting, the meeting shall, if convened at the
          request of Holders of Securities of such series and Tranches, be
          dissolved. In any other case the meeting may be adjourned for such
          period as may be determined by the chairman of the meeting prior to
          the adjournment of such meeting. In the absence of a quorum at any
          such adjourned meeting, such adjourned meeting may be further
          adjourned for such period as may be determined by the chairman of the
          meeting prior to the adjournment of such adjourned meeting. Except as
          provided by Section 1205(e), notice of the reconvening of any meeting
          adjourned for more than thirty (30) days shall be given as provided in
          Section 106 not less than ten (10) days prior to the date on which the
          meeting is scheduled to be reconvened. Notice of the reconvening of an
          adjourned meeting shall state expressly the percentage, as provided
          above, of the principal amount of the Outstanding Securities of such
          series and Tranches which shall constitute a quorum.

                    Except as limited by Section 1102, any resolution presented
          to a meeting or adjourned meeting duly reconvened at which a quorum is
          present as aforesaid may be adopted only by the affirmative vote of
          the Holders of a majority in aggregate principal amount of the
          Outstanding Securities of the series and Tranches with respect to
          which such meeting shall have been called, considered as one class;
          provided, however, that, except as so limited, any resolution with
          respect to any action which this Indenture expressly provides may be
          taken by the Holders of a specified percentage, which is less than a
          majority, in principal amount of the Outstanding Securities of such
          series and Tranches, considered as one class, may be adopted at a
          meeting or an adjourned meeting duly reconvened and at which a quorum
          is present as aforesaid by the affirmative vote of the Holders of such
          specified percentage in principal amount of the Outstanding Securities
          of such series and Tranches, considered as one class.

                    Any resolution passed or decision taken at any meeting of
          Holders of Securities duly held in accordance with this Section shall
          be binding on all the Holders of Securities of the series and Tranches
          with respect to which such meeting shall have been held, whether or
          not present or represented at the meeting.


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          SECTION 1205.  ATTENDANCE AT MEETINGS; DETERMINATION OF VOTING
                         RIGHTS; CONDUCT AND ADJOURNMENT OF MEETINGS.

                    (a) Attendance at meetings of Holders of Securities may be
          in person or by proxy; and, to the extent permitted by law, any such
          proxy shall remain in effect and be binding upon any future Holder of
          the Securities with respect to which it was given unless and until
          specifically revoked by the Holder or future Holder (except as
          provided in Section 104(g)) of such Securities before being voted.

                    (b) Notwithstanding any other provisions of this Indenture,
          the Trustee may make such reasonable regulations as it may deem
          advisable for any meeting of Holders of Securities in regard to proof
          of the holding of such Securities and of the appointment of proxies
          and in regard to the appointment and duties of inspectors of votes,
          the submission and examination of proxies, certificates and other
          evidence of the right to vote, and such other matters concerning the
          conduct of the meeting as it shall deem appropriate. Except as
          otherwise permitted or required by any such regulations and approved
          by the Company, the holding of Securities shall be proved in the
          manner specified in Section 104 and the appointment of any proxy shall
          be proved in the manner specified in Section 104. Such regulations may
          provide that written instruments appointing proxies, regular on their
          face, may be presumed valid and genuine without the proof specified in
          Section 104 or other proof.

                    (c) The Trustee shall, by an instrument in writing, appoint
          a temporary chairman of the meeting, unless the meeting shall have
          been called by the Company or by Holders as provided in Section
          1202(b), in which case the Company or the Holders of Securities of the
          series and Tranches calling the meeting, as the case may be, shall in
          like manner appoint a temporary chairman. A permanent chairman and a
          permanent secretary of the meeting shall be elected by vote of the
          Persons entitled to vote a majority in aggregate principal amount of
          the Outstanding Securities of all series and Tranches represented at
          the meeting, considered as one class.

                    (d) At any meeting each Holder or proxy shall be entitled to
          one vote for each One Thousand Dollars ($1,000) principal amount of
          Outstanding Securities held or represented by such Holder; provided,
          however, that no vote shall be cast or counted at any meeting in
          respect of any Security challenged as not Outstanding and ruled by the
          chairman of the meeting to be not Outstanding. The chairman of the
          meeting shall have no right to vote, except as a Holder of a Security
          or proxy.

                    (e) Any meeting duly called pursuant to Section 1202 at
          which a quorum is present may be adjourned from time to time by
          Persons entitled to vote a majority in aggregate principal amount of
          the Outstanding Securities of all series and Tranches 


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         represented at the meeting, considered as one class; and the meeting
         may be held as so adjourned without further notice.

         SECTION 1206.  COUNTING VOTES AND RECORDING ACTION OF MEETINGS.

                  The vote upon any resolution submitted to any meeting of
         Holders shall be by written ballots on which shall be subscribed the
         signatures of the Holders or of their representatives by proxy and the
         principal amounts and serial numbers of the Outstanding Securities, of
         the series and Tranches with respect to which the meeting shall have
         been called, held or represented by them. The permanent chairman of the
         meeting shall appoint two inspectors of votes who shall count all votes
         cast at the meeting for or against any resolution and who shall make
         and file with the secretary of the meeting their verified written
         reports of all votes cast at the meeting. A record in duplicate of the
         proceedings of each meeting of Holders shall be prepared by the
         secretary of the meeting and there shall be attached to such record the
         original reports of the inspectors of votes on any vote by ballot taken
         thereat and affidavits by one or more persons having knowledge of the
         facts setting forth a copy of the notice of the meeting and showing
         that such notice was given as provided in Section 1202 and, if
         applicable, Section 1204. Each copy shall be signed and verified by the
         affidavits of the permanent chairman and secretary of the meeting and
         one such copy shall be delivered to the Company, and another to the
         Trustee to be preserved by the Trustee, the latter to have attached
         thereto the ballots voted at the meeting. Any record so signed and
         verified shall be conclusive evidence of the matters therein stated.

         SECTION 1207.  ACTION WITHOUT MEETING.

                  In lieu of a vote of Holders at a meeting as hereinbefore
         contemplated in this Article, any request, demand, authorization,
         direction, notice, consent, waiver or other action may be made, given
         or taken by Holders by written instruments as provided in Section 104.


                                ARTICLE THIRTEEN

                IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS
                                  AND DIRECTORS

         SECTION 1301.  LIABILITY SOLELY CORPORATE.

                  No recourse shall be had for the payment of the principal of
         or premium, if any, or interest, if any, on any Securities, or any part
         thereof, or for any claim based thereon or otherwise in respect
         thereof, or of the indebtedness represented thereby, or upon any
         obligation, covenant or agreement under this Indenture, against any
         incorporator, 


   88


         stockholder, officer or director, as such, past, present or future, of
         the Company or of any predecessor or successor corporation (either
         directly or through the Company or a predecessor or successor
         corporation), whether by virtue of any constitutional provision,
         statute or rule of law or by the enforcement of any assessment or
         penalty or otherwise; it being expressly agreed and understood that
         this Indenture and all the Securities are solely corporate obligations
         and that no personal liability whatsoever shall attach to, or be
         incurred by, any incorporator, stockholder, officer or director, past,
         present or future, of the Company or of any predecessor or successor
         corporation, either directly or indirectly through the Company or any
         predecessor or successor corporation, because of the indebtedness
         hereby authorized or under or by reason of any of the obligations,
         covenants or agreements contained in this Indenture or in any of the
         Securities or to be implied herefrom or therefrom; and such personal
         liability, if any, is hereby expressly waived and released as a
         condition of, and as part of the consideration for, the execution and
         delivery of this Indenture and the issuance of the Securities.

                                ARTICLE FOURTEEN

                           SUBORDINATION OF SECURITIES

         SECTION 1401.  SECURITIES SUBORDINATE TO SENIOR INDEBTEDNESS.

                  The Company, for itself, its successors and assigns, covenants
         and agrees, and each Holder of the Securities of each series, by its
         acceptance thereof, likewise covenants and agrees, that the payment of
         the principal of and premium, if any, and interest, if any, on each and
         all of the Securities is hereby expressly subordinated and subject to
         the extent and in the manner set forth in this Article, in right of
         payment to the prior payment in full of all Senior Indebtedness.

                  Each Holder of the Securities of each series, by its
         acceptance thereof, authorizes and directs the Trustee on its behalf to
         take such action as may be necessary or appropriate to effectuate the
         subordination as provided in this Article, and appoints the Trustee its
         attorney-in-fact for any and all such purposes.

         SECTION 1402.  PAYMENT OVER OF PROCEEDS OF SECURITIES.

                  In the event (a) of any insolvency or bankruptcy proceedings
         or any receivership, liquidation, reorganization or other similar
         proceedings in respect of the Company or a substantial part of its
         property, or of any proceedings for liquidation, dissolution or other
         winding-up of the Company, whether or not involving insolvency or
         bankruptcy, or (b) subject to the provisions of Section 1403, that (i)
         a default shall have occurred with respect to the payment of principal
         of or interest 


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         on or other monetary amounts due and payable on any Senior
         Indebtedness, or (ii) there shall have occurred a default (other than a
         default in the payment of principal or interest or other monetary
         amounts due and payable) in respect of any Senior Indebtedness, as
         defined therein or in the instrument under which the same is
         outstanding, permitting the holder or holders thereof to accelerate the
         maturity thereof (with notice or lapse of time, or both), and such
         default shall have continued beyond the period of grace, if any, in
         respect thereof, and, in the cases of subclauses (i) and (ii) of this
         clause (b), such default shall not have been cured or waived or shall
         not have ceased to exist, or (c) that the principal of and accrued
         interest on the Securities of any series shall have been declared due
         and payable pursuant to Section 701 and such declaration shall not have
         been rescinded and annulled as provided in Section 702, then:

                  (1) the holders of all Senior Indebtedness shall first be
             entitled to receive payment of the full amount due thereon, or
             provision shall be made for such payment in money or money's worth,
             before the Holders of any of the Securities are entitled to receive
             a payment on account of the principal of or interest on the
             indebtedness evidenced by the Securities, including, without
             limitation, any payments made pursuant to Article Four;

                  (2) any payment by, or distribution of assets of, the Company
             of any kind or character, whether in cash, property or securities,
             to which any Holder or the Trustee would be entitled except for the
             provisions of this Article, shall be paid or delivered by the
             person making such payment or distribution, whether a trustee in
             bankruptcy, a receiver or liquidating trustee or otherwise,
             directly to the holders of such Senior Indebtedness or their
             representative or representatives or to the trustee or trustees
             under any indenture under which any instruments evidencing any of
             such Senior Indebtedness may have been issued, ratably according to
             the aggregate amounts remaining unpaid on account of such Senior
             Indebtedness held or represented by each, to the extent necessary
             to make payment in full of all Senior Indebtedness remaining unpaid
             after giving effect to any concurrent payment or distribution (or
             provision therefor) to the holders of such Senior Indebtedness,
             before any payment or distribution is made to the Holders of the
             indebtedness evidenced by the Securities or to the Trustee under
             this Indenture; and

                  (3) in the event that, notwithstanding the 


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                  foregoing, any payment by, or distribution of assets of, the
                  Company of any kind or character, whether in cash, property or
                  securities, in respect of principal of or interest on the
                  Securities or in connection with any repurchase by the Company
                  of the Securities, shall be received by the Trustee or any
                  Holder before all Senior Indebtedness is paid in full, or
                  provision is made for such payment in money or money's worth,
                  such payment or distribution in respect of principal of or
                  interest on the Securities or in connection with any
                  repurchase by the Company of the Securities shall be paid over
                  to the holders of such Senior Indebtedness or their
                  representative or representatives or to the trustee or
                  trustees under any indenture under which any instruments
                  evidencing any such Senior Indebtedness may have been issued,
                  ratably as aforesaid, for application to the payment of all
                  Senior Indebtedness remaining unpaid until all such Senior
                  Indebtedness shall have been paid in full, after giving effect
                  to any concurrent payment or distribution (or provision
                  therefor) to the holders of such Senior Indebtedness.

                  Notwithstanding the foregoing, at any time after the 123rd day
         following the date of deposit of cash or Government Obligations
         pursuant to Section 601 (provided all conditions set out in such
         Section shall have been satisfied), the funds so deposited and any
         interest thereon will not be subject to any rights of holders of Senior
         Indebtedness including, without limitation, those arising under this
         Article Fourteen; provided that no event described in clause (e) of
         Section 701 with respect to the Company has occurred during such
         123-day period.

                  For purposes of this Article only, the words "cash, property
         or securities" shall not be deemed to include shares of stock of the
         Company as reorganized or readjusted, or securities of the Company or
         any other corporation provided for by a plan or reorganization or
         readjustment which are subordinate in right of payment to all Senior
         Indebtedness which may at the time be outstanding to the same extent
         as, or to a greater extent than, the Securities are so subordinated as
         provided in this Article. The consolidation of the Company with, or the
         merger of the Company into, another corporation or the liquidation or
         dissolution of the Company following the conveyance or transfer of its
         property as an entirety, or substantially as an entirety, to another
         corporation upon the terms and conditions provided for in Article Ten
         hereof shall not be deemed a dissolution, winding-up, liquidation or
         reorganization for the purposes of this Section 1402 if such other
         corporation shall, as a part of such consolidation, merger, conveyance
         or transfer, comply with the conditions stated in Article Ten hereof.
         Nothing in Section 1401 


   91


         or in this Section 1402 shall apply to claims of, or payments to, the
         Trustee under or pursuant to Section 807.

         SECTION 1403.  DISPUTES WITH HOLDERS OF CERTAIN SENIOR
                        INDEBTEDNESS.

                  Any failure by the Company to make any payment on or perform
         any other obligation in respect of Senior Indebtedness, other than any
         indebtedness incurred by the Company or assumed or guaranteed, directly
         or indirectly, by the Company for money borrowed (or any deferral,
         renewal, extension or refunding thereof) or any other obligation as to
         which the provisions of this Section shall have been waived by the
         Company in the instrument or instruments by which the Company incurred,
         assumed, guaranteed or otherwise created such indebtedness or
         obligation, shall not be deemed a default under clause (b) of Section
         1402 if (i) the Company shall be disputing its obligation to make such
         payment or perform such obligation and (ii) either (A) no final
         judgment relating to such dispute shall have been issued against the
         Company which is in full force and effect and is not subject to further
         review, including a judgment that has become final by reason of the
         expiration of the time within which a party may seek further appeal or
         review, or (B) in the event that a judgment that is subject to further
         review or appeal has been issued, the Company shall in good faith be
         prosecuting an appeal or other proceeding for review and a stay or
         execution shall have been obtained pending such appeal or review.

          SECTION 1404.  SUBROGATION.

                  Senior Indebtedness shall not be deemed to have been paid in
         full unless the holders thereof shall have received cash (or securities
         or other property satisfactory to such holders) in full payment of such
         Senior Indebtedness then outstanding. Subject to the prior payment in
         full of all Senior Indebtedness, the rights of the Holders of the
         Securities shall be subrogated to the rights of the holders of Senior
         Indebtedness to receive any further payments or distributions of cash,
         property or securities of the Company applicable to the holders of the
         Senior Indebtedness until all amounts owing on the Securities shall be
         paid in full; and such payments or distributions of cash, property or
         securities received by the Holders of the Securities, by reason of such
         subrogation, which otherwise would be paid or distributed to the
         holders of such Senior Indebtedness shall, as between the Company, its
         creditors other than the holders of Senior Indebtedness, and the
         Holders, be deemed to be a payment by the Company to or on account of
         Senior Indebtedness, it being understood that the provisions of this
         Article are and are intended solely for the purpose of defining the
         relative rights of the Holders, on the one hand, and the holders of the
         Senior Indebtedness, on the other hand.

         SECTION 1405.  OBLIGATION OF THE COMPANY UNCONDITIONAL.


   92


                    Nothing contained in this Article or elsewhere in this
          Indenture or in the Securities is intended to or shall impair, as
          among the Company, its creditors other than the holders of Senior
          Indebtedness and the Holders, the obligation of the Company, which is
          absolute and unconditional, to pay to the Holders the principal of and
          interest on the Securities as and when the same shall become due and
          payable in accordance with their terms, or is intended to or shall
          affect the relative rights of the Holders and creditors of the Company
          other than the holders of Senior Indebtedness, nor shall anything
          herein or therein prevent the Trustee or any Holder from exercising
          all remedies otherwise permitted by applicable law upon default under
          this Indenture, subject to the rights, if any, under this Article of
          the holders of Senior Indebtedness in respect of cash, property or
          securities of the Company received upon the exercise of any such
          remedy.

                    Upon any payment or distribution of assets or securities of
          the Company referred to in this Article, the Trustee and the Holders
          shall be entitled to rely upon any order or decree of a court of
          competent jurisdiction in which such dissolution, winding-up,
          liquidation or reorganization proceedings are pending for the purpose
          of ascertaining the persons entitled to participate in such
          distribution, the holders of the Senior Indebtedness and other
          indebtedness of the Company, the amount thereof or payable thereon,
          the amount or amounts paid or distributed thereon, and all other facts
          pertinent thereto or to this Article.

          SECTION 1406.  PRIORITY OF SENIOR INDEBTEDNESS UPON MATURITY.

                    Upon the maturity of the principal of any Senior
          Indebtedness by lapse of time, acceleration or otherwise, all matured
          principal of Senior Indebtedness and interest and premium, if any,
          thereon shall first be paid in full before any payment of principal or
          premium, if any, or interest, if any, is made upon the Securities or
          before any Securities can be acquired by the Company or any sinking
          fund payment is made with respect to the Securities (except that
          required sinking fund payments may be reduced by Securities acquired
          before such maturity of such Senior Indebtedness).

          SECTION 1407.  TRUSTEE AS HOLDER OF SENIOR INDEBTEDNESS.

                    The Trustee shall be entitled to all rights set forth in
          this Article with respect to any Senior Indebtedness at any time held
          by it, to the same extent as any other holder of Senior Indebtedness.
          Nothing in this Article shall deprive the Trustee of any of its rights
          as such holder.

          SECTION 1408.  NOTICE TO TRUSTEE TO EFFECTUATE SUBORDINATION.

                    Notwithstanding the provisions of this Article or any 


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         other provision of the Indenture, the Trustee shall not be charged with
         knowledge of the existence of any facts which would prohibit the making
         of any payment of moneys to or by the Trustee unless and until the
         Trustee shall have received written notice thereof from the Company,
         from a Holder or from a holder of any Senior Indebtedness or from any
         representative or representatives of such holder and, prior to the
         receipt of any such written notice, the Trustee shall be entitled,
         subject to Section 801, in all respects to assume that no such facts
         exist; provided, however, that, if prior to the fifth Business Day
         preceding the date upon which by the terms hereof any such moneys may
         become payable for any purpose, or in the event of the execution of an
         instrument pursuant to Section 602 acknowledging satisfaction and
         discharge of this Indenture, then if prior to the second Business Day
         preceding the date of such execution, the Trustee shall not have
         received with respect to such moneys the notice provided for in this
         Section, then, anything herein contained to the contrary
         notwithstanding, the Trustee may, in its discretion, receive such
         moneys and/or apply the same to the purpose for which they were
         received, and shall not be affected by any notice to the contrary,
         which may be received by it on or after such date; provided, however,
         that no such application shall affect the obligations under this
         Article of the persons receiving such moneys from the Trustee.

         SECTION 1409.  MODIFICATION, EXTENSION, ETC. OF SENIOR
                        INDEBTEDNESS.

                  The holders of Senior Indebtedness may, without affecting in
         any manner the subordination of the payment of the principal of and
         premium, if any, and interest, if any, on the Securities, at any time
         or from time to time and in their absolute discretion, agree with the
         Company to change the manner, place or terms of payment, change or
         extend the time of payment of, or renew or alter, any Senior
         Indebtedness, or amend or supplement any instrument pursuant to which
         any Senior Indebtedness is issued, or exercise or refrain from
         exercising any other of their rights under the Senior Indebtedness
         including, without limitation, the waiver of default thereunder, all
         without notice to or assent from the Holders or the Trustee.

         SECTION 1410.  TRUSTEE HAS NO FIDUCIARY DUTY TO HOLDERS OF SENIOR
                        INDEBTEDNESS.

                  With respect to the holders of Senior Indebtedness, the
         Trustee undertakes to perform or to observe only such of its covenants
         and objectives as are specifically set forth in this Indenture, and no
         implied covenants or obligations with respect to the holders of Senior
         Indebtedness shall be read into this Indenture against the Trustee. The
         Trustee shall not be deemed to owe any fiduciary duty to the holders of
         Senior Indebtedness, and shall not be liable to any such holders if it
         shall mistakenly pay over or deliver to the Holders or the Company or


   94


         any other Person, money or assets to which any holders of Senior
         Indebtedness shall be entitled by virtue of this Article or otherwise.

          SECTION 1411.  PAYING AGENTS OTHER THAN THE TRUSTEE.

                    In case at any time any Paying Agent other than the Trustee
          shall have been appointed by the Company and be then acting hereunder,
          the term "Trustee" as used in this Article shall in such case (unless
          the context shall otherwise require) be construed as extending to and
          including such Paying Agent within its meaning as fully for all
          intents and purposes as if such Paying Agent were named in this
          Article in addition to or in place of the Trustee; provided, however,
          that Sections 1407, 1408 and 1410 shall not apply to the Company if it
          acts as Paying Agent.

          SECTION 1412.  RIGHTS OF HOLDERS OF SENIOR INDEBTEDNESS NOT
                         IMPAIRED.

                    No right of any present or future holder of Senior
          Indebtedness to enforce the subordination herein shall at any time or
          in any way be prejudiced or impaired by any act or failure to act on
          the part of the Company or by any noncompliance by the Company with
          the terms, provisions and covenants of this Indenture, regardless of
          any knowledge thereof any such holder may have or be otherwise charged
          with.

          SECTION 1413.  EFFECT OF SUBORDINATION PROVISIONS; TERMINATION.

                    Notwithstanding anything contained herein to the contrary,
          other than as provided in the immediately succeeding sentence, all the
          provisions of this Indenture shall be subject to the provisions of
          this Article, so far as the same may be applicable thereto.

                    Notwithstanding anything contained herein to the contrary,
          the provisions of this Article Fourteen shall be of no further effect
          with respect to all or a portion of Senior Indebtedness, and the
          Securities shall no longer be subordinated in right of payment to the
          prior payment of such Senior Indebtedness, to the extent that the
          Company shall have delivered to the Trustee a notice to such effect
          specifying therein such Senior Indebtedness to which the Securities
          shall no longer be subordinated. Any such notice delivered by the
          Company shall not be deemed to be a supplemental indenture for
          purposes of Article Twelve hereof.


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


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                    IN WITNESS WHEREOF, the parties hereto have caused this
          Indenture to be duly executed as of the day and year first above
          written.

                                        THE WASHINGTON WATER POWER COMPANY


                                        By: /s/ J.E. Eliassen
                                           -------------------------------
                                             Name:  J.E. Eliassen
                                             Title: Senior Vice President
                                                      and Chief Financial
                                                      Officer


                                        WILMINGTON TRUST COMPANY, Trustee


                                        By: /s/ Donald G. MacKelcan
                                           -------------------------------