Exhibit 10(F)

                     TRANSITIONAL POWER PURCHASE AGREEMENT


                                BY AND BETWEEN


                             NEVADA POWER COMPANY


                                      AND


                                CLARK POWER LLC



DATED:  NOVEMBER 16, 2000



ASSET BUNDLE:  CLARK

                                       1


                               TABLE OF CONTENTS



Section                                                                                                         Page
- -------                                                                                                         ----
                                                                                                             
 1.      DEFINITIONS..............................................................................................1
 2.      TERM.....................................................................................................7
 3.      SECURITY.................................................................................................9
 4.      SUPPLY SERVICE..........................................................................................10
 5.      NOTIFICATION............................................................................................13
 6.      PRICING OF ENERGY AND ANCILLARY SERVICES................................................................15
 7.      INVOICING AND PAYMENTS..................................................................................15
 8.      REGULATORY APPROVALS....................................................................................19
 9.      COMPLIANCE..............................................................................................19
10.      INDEMNIFICATION.........................................................................................20
11.      LIMITATION OF LIABILITY.................................................................................21
12.      FORCE MAJEURE...........................................................................................22
13.      DISPUTES................................................................................................24
14.      NATURE OF OBLIGATIONS...................................................................................26
15.      SUCCESSORS AND ASSIGNS..................................................................................26
16.      REPRESENTATIONS.........................................................................................28
17.      DEFAULT AND REMEDIES....................................................................................28
18       FACILITY ADDITIONS AND MODIFICATIONS....................................................................29
19.      COORDINATION............................................................................................30
20.      EMERGENCY AND NONEMERGENCY CONDITION RESPONSE...........................................................30
21.      OUTAGE SCHEDULING.......................................................................................30
22.      REPORTS.................................................................................................32
23.      COMMUNICATIONS..........................................................................................32
24.      NOTICES.................................................................................................33
25.      MERGER..................................................................................................34
26.      HEADINGS................................................................................................34
27.      COUNTERPARTS AND INTERPRETATION.........................................................................34
28.      SEVERABILITY............................................................................................34
29.      WAIVERS.................................................................................................35
30.      AMENDMENTS..............................................................................................35
31.      TIME IS OF THE ESSENCE..................................................................................35
32.      APPROVALS...............................................................................................35
33.      PLR SERVICE.............................................................................................36
34.      CONFIDENTIALITY.........................................................................................36
35.      CHOICE OF LAW...........................................................................................38




Exhibits                                                                                                       Page
- --------                                                                                                       ----
                                                                                                            
EXHIBIT A         ASSET BUNDLE CAPACITIES AND OPERATING PARAMETERS..............................................A-1
EXHIBIT B         PRICE FLOOR OF ENERGY, PRICE CEILING OF ENERGY, AND PRICE OF
                  ANCILLARY SERVICES............................................................................B-1
EXHIBIT C         SUPPLIER'S MONTHLY INVOICE....................................................................C-1
EXHIBIT D         BUYER'S MONTHLY INVOICE - REPLACEMENT COSTS...................................................D-1
EXHIBIT E         YEAR END TRUE-UP INVOICE......................................................................E-1
EXHIBIT F         NOTICES, BILLING AND PAYMENT INSTRUCTIONS.....................................................F-1
EXHIBIT G         FORM OF AVAILABILITY NOTICE...................................................................G-1
EXHIBIT H         FORM OF GUARANTEE.............................................................................H-1
EXHIBIT I         COMPANY OBSERVED HOLIDAYS.....................................................................I-1
EXHIBIT J         ADJUSTMENTS TO TPPA AMOUNT....................................................................J-1
EXHIBIT K         ADJUSTMENTS TO MINIMUM ANNUAL TAKE............................................................K-1
EXHIBIT L         ENERGY APPLICABLE TO MINIMUM ANNUAL TAKE......................................................L-1


                                       i


                     TRANSITIONAL POWER PURCHASE AGREEMENT

This Agreement is made and entered into as of November 16, 2000 by and between
Nevada Power Company, a Nevada corporation ("Buyer"), and Clark Power LLC, a
Delaware limited liability company (the "Supplier"). Buyer and Supplier are
referred to individually as a "Party" and collectively as the "Parties."

WITNESSETH:

WHEREAS, Buyer is selling its Clark generating station and other assets
associated therewith to NRG Energy, Inc. a Delaware corporation, and Dynegy
Holdings Inc., a Delaware corporation, both affiliates of Supplier (the "Asset
Sale");

WHEREAS, notwithstanding the Asset Sale, Buyer expects that it has been
designated as the Provider of Last Resort ("PLR") for its Nevada retail electric
customers who are unable to obtain electric service from an alternative seller
or who fail to select an alternative seller. The load required to serve such
customers, plus the customers under those wholesale sales agreements existing at
the Effective Date, is referred to herein as Buyer's Transitional Resource
Requirement; and

WHEREAS, as a result of the Asset Sale, Buyer will no longer have its interest
in the Clark generating station as a source of supply for its Transitional
Resource Requirement; and

WHEREAS, Supplier has or is willing to secure the necessary resources to provide
a portion of Buyer's Transitional Resource Requirement; and

WHEREAS, Buyer desires to purchase from Supplier and Supplier desires to sell
Energy and Ancillary Services under contract to Buyer; and

NOW, THEREFORE, in consideration of the mutual covenants, representations and
agreements hereinafter set forth, and intending to be legally bound hereby, the
Parties agree as follows:

1.      DEFINITIONS

        1.1     Format.

                1.1.1   References to Articles and Sections herein are
                        cross-references to Articles and Sections, respectively,
                        in this Agreement, unless otherwise stated.

                1.1.2   Any parts of this Agreement which are incorporated by
                        reference shall have the same meaning as if set forth in
                        full text herein.

                                       2


        1.2     Definitions. As used in this Agreement, the following terms
                -----------
                shall have the meanings set forth below:


                1.2.1   "Agreement" means this Agreement together with the
                         ---------
                        Exhibits attached hereto, as such may be amended from
                        time to time.

                1.2.2   "Adjusted Replacement Cost of Energy" means the
                         -----------------------------------
                        Replacement Cost of Energy that will be due from
                        Supplier after True-up in accordance with the provisions
                        of Section 7.5. Example determinations of the Adjusted
                        Replacement Cost of Energy are shown on Exhibit E.

                1.2.3   "Ancillary Services" means those capacity-related
                         ------------------
                        services as listed in Exhibit B as well as the Energy
                        component of such services. These services are defined
                        in Buyer's OATT.

                1.2.4   "Asset Bundle" means the Clark generating station(s) and
                         ------------
                        other assets associated therewith pursuant to the terms
                        of the Asset Sale Agreement.

                1.2.5   "Asset Bundle Capacity" means, with respect to each unit
                         ---------------------
                        listed in Exhibit A, the net generating capacity (in
                        megawatts ("MW")) of such unit, as modified from time to
                        time in accordance with Section 5.2, Section 20, and
                        Section 21, and not to exceed at any time the net
                        capacity for each unit listed in Exhibit A. Asset Bundle
                        Capacity shall also mean, as the context requires, the
                        Energy (in megawatt-hours ("MWh")) and the Ancillary
                        Services which the units would be capable of producing
                        if they operated at the capacity level described in the
                        first sentence of this Section 1.2.5.

                1.2.6   "Asset Sale" has the meaning set forth in the Recitals.
                         ----------

                1.2.7   "Asset Sale Agreement" means the Agreement between Buyer
                         --------------------
                        and Supplier's affiliates, NRG Energy, Inc., a Delaware
                        corporation, and Dynegy Holdings Inc., a Delaware
                        corporation, dated as of November 16, 2000, to purchase
                        Buyer's Asset Bundle.

                1.2.8   "Asset Sale Closing" means the transfer of Buyer's
                         ------------------
                        ownership of the Asset Bundle through the consummation
                        of the Asset Sale pursuant to the terms of the Asset
                        Sale Agreement.

                1.2.9   "Average Cost of Delivered Energy" means the total cost
                         --------------------------------
                        of Delivered Energy for the Contract Year after the
                        application of the Annual True-up Mechanism from Section
                        7.5 divided by the total Delivered Energy for the
                        Contract Year. Example determinations of Average Cost of
                        Delivered Energy are shown on Exhibit E.

                1.2.10  "Availability Notice" means a notice delivered from time
                         -------------------
                        to time by Supplier to Buyer pursuant to Section 5.2
                        notifying Buyer of changes in the availability of the
                        Asset Bundle.

                                       3


                1.2.11  "Business Day" means any day other than Saturday,
                         ------------
                        Sunday, and any day that is an observed holiday by Buyer
                        as shown on Exhibit I.

                1.2.12  "Buyer's OATT" means Buyer's then-effective Open Access
                         ------------
                        Transmission Tariff, as it may be amended, which has
                        been accepted for filing by the FERC.

                1.2.13  "CALPX" means the California Power Exchange and any
                         -----
                        successor entity thereto.

                1.2.14  "Confidential Information" has the meaning set forth in
                         ------------------------
                        Section 34.

                1.2.15  "Contract Year" means, with respect to the first
                         -------------
                        Contract Year, the period beginning on the Effective
                        Date and, with respect to each subsequent Contract Year,
                        the period immediately following the end of the
                        preceding Contract Year, and in each case ending on the
                        earlier of the date which is twelve (12) months
                        thereafter or the termination date of this Agreement.

                1.2.16  "Control Area Operator" means an entity or organization,
                         ---------------------
                        and its representatives, which is responsible for
                        operating and maintaining the reliability of the
                        electric power system(s) within the Transmission System.
                        The Control Area Operator is also referred to as the
                        transmission operator.

                1.2.17  "Credit Amount" shall mean an amount equal to the TPPA
                         -------------
                        Amount, plus an additional amount equal to $40/MWh
                        multiplied by 395 megawatts, multiplied by the number of
                        hours remaining in this Agreement until March 1, 2003.

                1.2.18  "Delivered Amount" means, with respect to any Dispatch
                         ----------------
                        Hour, the Energy delivered by Supplier to Buyer at the
                        designated Point(s) of Delivery during such Dispatch
                        Hour, whether or not such Energy was generated by the
                        Asset Bundle, plus any additional amounts pursuant to
                        Section 4.1.2, Section 4.1.3 and the Ancillary Services
                        provided by Supplier for Buyer during any Dispatch Hour
                        pursuant to the terms of this Agreement.

                1.2.19  "Derating" means a reduction to the Asset Bundle
                         --------
                        Capacity.

                1.2.20  "Dispatch Hour" means the prescribed hour(s) when Energy
                         -------------
                        is to be delivered by Supplier to Buyer at the
                        designated Point(s) of Delivery and the prescribed
                        hour(s) when Ancillary Services are to be provided to
                        the ISA by Supplier on behalf of Buyer.

                                       4


                1.2.21  "EDU" means electric distribution utility, the
                         ---
                        organization with the responsibility for the
                        distribution of energy over Buyer's distribution system
                        to retail end-users.

                1.2.22  "Effective Date" means the date that this Agreement
                         --------------
                        becomes effective which shall be the date on which the
                        Closing Date, as defined in the Asset Sale Agreement,
                        actually occurs.

                1.2.23  "Emergency Condition" shall mean a public declaration by
                         -------------------
                        the ISA or Control Area Operator that the Transmission
                        System is in danger of imminent voltage collapse or
                        uncontrollable cascading outages.

                1.2.24  "Energy" means electricity (measured in MWh) and
                         ------
                        associated power-producing capacity to be provided by
                        Supplier to Buyer pursuant to this Agreement. Also known
                        as "firm energy and associated firm capacity".

                1.2.25  "Event of Default" has the meaning set forth in Section
                         ----------------
                        17 hereof.

                1.2.26  "FERC" means the Federal Energy Regulatory Commission
                         ----
                        and any successor agency thereto.

                1.2.27  "Force Majeure" has the meaning set forth in Section 12
                         -------------
                        hereof.

                1.2.28  "GAAP" means Generally Accepted Accounting Principles
                         ----
                        for the United States.

                1.2.29  "Good Utility Practice" means the applicable practices,
                         ---------------------
                        methods, and act:

                        (i)     required by applicable Laws, permits and
                                reliability criteria, whether or not the Party
                                whose conduct at issue is a member thereof, and

                        (ii)    otherwise engaged in or approved by a
                                significant portion of the United States
                                electric utility industry during the relevant
                                time period, which, in the exercise of
                                reasonable judgement in light of the facts known
                                at the time the decision was made, could have
                                been expected to accomplish the desired result
                                at a reasonable cost consistent with good
                                business practices, safety, environmental
                                protection, economy and expediency. Good Utility
                                Practice is not intended to be limited to the
                                optimum practice, method or act to the exclusion
                                of all others, but rather to practices, methods
                                or acts generally accepted in the United States
                                electric utility industry.

                1.2.30  "Governmental Authority" means any foreign, federal,
                         ----------------------
                        state, local, tribal or other governmental, regulatory
                        or administrative agency, court, commission, department,
                        board, or other governmental subdivision, legislature,
                        rulemaking board, tribunal, arbitrating body, or other
                        governmental authority.

                                       5


                1.2.31  "Gross Replacement Costs of Energy" means Buyer's
                         ---------------------------------
                        Replacement Cost of Energy prior to adjustment for the
                        amount that Buyer would have paid for the Energy if
                        Supplier had delivered the Energy to Buyer. Example
                        determinations of Gross Replacement Costs of Energy are
                        shown on Exhibit D.

                1.2.32  "Guarantee" has the meaning set forth in Section 3.1.2
                         ---------
                        hereof.

                1.2.33  "Guarantor" has the meaning set forth in Section 3.1.2
                         ---------
                        hereof.

                1.2.34  "Invoiced Replacement Costs" means the Replacement Costs
                         --------------------------
                        which have been billed to Supplier or subtracted from
                        payments to Supplier in accordance with the provisions
                        of Section 4.2 and Section 7.4.

                1.2.35  "ISA" means the Mountain West Independent System
                         ---
                        Administrator, or the regional transmission organization
                        authorized with the responsibility for the scheduling
                        and administration of Energy and Ancillary Services
                        over, through and within the Transmission System in
                        coordination with other interconnected entities to
                        provide transmission services. The ISA is also referred
                        to herein as transmission administrator.

                1.2.36  "ISA's OATT" means the ISA's then-effective Open Access
                         ----------
                        Transmission Tariff, as it may be amended, which has
                        been accepted for filing by the FERC.

                1.2.37  "Law" means any law, treaty, code, rule, regulation,
                         ---
                        order, determination, permit, certificate,
                        authorization, or approval of an arbitrator, court or
                        other Governmental Authority which is binding on a Party
                        or any of its property.

                1.2.38  "Limit on Excused Energy" means the amount of energy
                         -----------------------
                        that can be excused under the provisions of Section 12.4
                        as shown on Exhibit A.

                1.2.39  "Market Price of Energy" has the meaning set forth in
                         ----------------------
                        Section 6.2.1.

                1.2.40  "Minimum Annual Energy Take" has the meaning set forth
                         --------------------------
                        in Section 4.1.2.

                1.2.41  "Minimum Investment Grade Rating" of a Person means that
                         -------------------------------
                        such Person has a minimum credit rating on its senior
                        unsecured debt securities of at least two of the
                        following ratings: (i) BBB as determined by Standard &
                        Poor's Corporation, (ii) Baa2 as determined by Moody's
                        Investors Service, Inc., or (iii) a comparable rating by
                        another nationally recognized rating service reasonably
                        acceptable to Buyer.

                                       6


                1.2.42  "Minimum Tangible Net Worth" means the total book value
                         --------------------------
                        of shareholder's equity less the balance of goodwill, as
                        reported on the latest quarterly balance sheet prepared
                        in accordance with Generally Accepted Accounting
                        Principles (GAAP).

                1.2.43  "NERC" means the North American Electric Reliability
                         ----
                        Council and any successor entity thereto.

                1.2.44  "Nonemergency Condition" shall mean the determination,
                         ----------------------
                        direction or order by the ISA, or Control Area Operator
                        to Supplier and/or Buyer to change the Supply Amount
                        which is not a result of or due to an Emergency
                        Condition. A Nonemergency Condition includes an
                        insufficiency of Ancillary Services to securely operate
                        the Transmission System.

                1.2.45  "Operating Representatives" means the persons designated
                         -------------------------
                        to transmit and receive routine operating and emergency
                        communications required under this Agreement.

                1.2.46  "Party" has the meaning set forth in the preamble of
                         -----
                        this Agreement.

                1.2.47  "Permitted Deratings" means those reductions to the
                         -------------------
                        Asset Bundle Capacity of which Supplier may notify Buyer
                        from time to time in an Availability Notice pursuant to
                        Section 5.2.

                1.2.48  "Person" means any natural person, partnership, limited
                         ------
                        liability company, joint venture, corporation, trust,
                        unincorporated organization, or governmental entity or
                        any department or agency thereof.

                1.2.49  "Point of Delivery" means the point (s) which has (have)
                         -----------------
                        been specified as the Interconnection Point(s) in the
                        Interconnection Agreement between Buyer and Supplier,
                        dated November 16, 2000, as it may be amended from time
                        to time, as well as any alternative locations agreed
                        upon pursuant to Section 4.1.6.

                1.2.50  "Price Ceiling of Energy" means the ceiling price of
                         -----------------------
                        Energy as stated in Exhibit B.

                1.2.51  "Price Floor of Energy" means the floor price of Energy
                         ---------------------
                        as stated in Exhibit B.

                1.2.52  "Provider of Last Resort (PLR)" has the meaning set
                         -----------------------------
                        forth in the Recitals.

                1.2.53  "PUCN" means the Public Utilities Commission of Nevada
                         ----
                        and any successor entity thereto.

                                       7


                1.2.54  "Replacement Costs" means with respect to a period of
                         -----------------
                        time, the difference between (a) the actual costs,
                        including without limitation related penalties and
                        transmission costs, incurred by Buyer to replace any
                        shortfall between (1) the Supply Amount and (2) the
                        Delivered Amounts of Energy, (or in the case of
                        Ancillary Services the Supplier's schedule of Ancillary
                        Services) during such period and (b) the payments the
                        Supplier would have been entitled to in respect of such
                        shortfall in delivery; provided that Replacement Costs
                        shall also be subject to the annual true-up mechanism
                        set forth in Section 7.5.

                1.2.55  "Supply Amount" means, with respect to each Dispatch
                         -------------
                        Hour, the amount of Energy and Ancillary Services, not
                        to exceed the Asset Bundle Capacity for such Dispatch
                        Hour, requested by Buyer to be delivered by Supplier
                        during any Dispatch Hour. The Supply Amount for any
                        Dispatch Hour shall be determined pursuant to Section
                        5.1.

                1.2.56  "Total Amount of Energy Replaced" means the summation of
                         -------------------------------
                        Replacement Energy as shown on Exhibit E.

                1.2.57  "TPPA Amount" means $158,000,000 as such amount may be
                         -----------
                        adjusted pursuant to Section 2.3.

                1.2.58  "Transitional Resource Requirement" or "TRR" means the
                         ---------------------------------
                        Energy and loss compensation necessary for Buyer to meet
                        its obligations as a Provider of Last Resort (PLR) for
                        Nevada and under those wholesale sales agreements
                        existing at the Effective Date.

                1.2.59  "Transmission System" means the transmission facilities
                         -------------------
                        constituting Buyer's control area, as of the date this
                        Agreement is executed, plus any modification, upgrade or
                        expansion of, or additions to, such facilities.

                1.2.60  "WSCC" means the Western Systems Coordinating Council
                         ----
                        and any successor entity thereto.

2.      TERM

        2.1     Term. Unless terminated earlier pursuant to the terms of this
                ----
                Agreement, the term of this Agreement shall commence on the
                Effective Date and continue until the earlier of the effective
                date of an order by a Governmental Authority terminating Buyer's
                PLR responsibility, or March 1, 2003. Supplier shall provide
                service under this Agreement commencing on the first hour on the
                day after the Effective Date.

        2.2     Termination.
                -----------

                2.2.1   Except pursuant to Sections 2.2.2 or 17.4, this
                        Agreement may not be terminated without the explicit
                        prior written approval of Buyer.

                2.2.2   If, prior to the Asset Sale Closing, the FERC or any
                        other

                                       8


                        Governmental Authority places conditions on or requires
                        revisions of this Agreement which have a material
                        adverse effect on Supplier or Buyer, the Parties agree
                        to negotiate in good faith those amendments to the
                        Agreement reasonably needed to preserve the bargain
                        between the Parties. If the Parties fail to negotiate
                        mutually acceptable amendments to this Agreement within
                        sixty (60) days of such action by the FERC or other
                        Governmental Authority, either Party may terminate the
                        Agreement after first notifying the other Party in
                        writing at least ten (10) Business Days prior to the
                        termination date; provided that neither Party may
                        exercise a right of termination pursuant to this Section
                        2.2.2 after the Asset Sale Closing.

                2.2.3   This Agreement may be terminated with the mutual
                        agreement of the Parties.

                2.2.4   Any termination of this Agreement pursuant to this
                        Section 2 shall not take effect until FERC either
                        authorizes the termination or accepts a written notice
                        of termination.

        2.3     Effect of Termination.
                ---------------------

                2.3.1   Adjustment of TPPA Amount. If the Effective Date of this
                        -------------------------
                        Agreement is before June 1, 2001, the TPPA Amount shall
                        be adjusted to equal (1) the TPPA Amount multiplied by
                        (2) 100% plus the sum of the monthly adjustments from
                        Exhibit J for each month or portion thereof between the
                        Effective Date and June 1, 2001. An example calculation
                        is shown on Exhibit J.

                        If the Effective Date of this Agreement is after June 1,
                        2001, the TPPA Amount shall be adjusted to equal (1) the
                        TPPA Amount multiplied by (2) 100% minus the sum of the
                        monthly adjustments from Exhibit J for each month or
                        portion thereof between June 1, 2001 and the Effective
                        Date. An example calculation is shown on Exhibit J.

                        If this Agreement is terminated before March 1, 2003,
                        Supplier shall pay to Buyer an amount, in accordance
                        with the provisions of Section 7, equal to the TPPA
                        Amount which existed before any adjustment in accordance
                        with the first or second paragraph of this Section
                        2.3.1, multiplied by the sum of the monthly adjustments
                        for each month or portion thereof between the date on
                        which this Agreement is terminated and March 1, 2003. An
                        example calculation is shown on Exhibit J.

                2.3.2   Any default or termination of this Agreement shall not
                        release either Party from any applicable provisions of
                        this Agreement with respect to:

                        2.3.2.1 The payment of liquidated damages pursuant to
                            Sections 4.2, 12, 17, 18, or 21.

                        2.3.2.2 Indemnity obligations contained in Section 10,
                            to the extent

                                       9


                             of the statute of limitations period applicable to
                             any third party claim.

                        2.3.2.3 Limitation of liability provisions contained in
                             Section 11.

                        2.3.2.4 Payment of any unpaid amounts in respect of
                             obligations arising prior to or resulting from
                             termination.

                        2.3.2.5 For a period of one (1) year after the
                             termination date, the right to raise a payment
                             dispute and the resolution thereof pursuant to
                             Section 13.

                        2.3.2.6 The resolution of any dispute submitted pursuant
                             to Section 13 prior to, or resulting from,
                             termination.

3.      SECURITY

        3.1     Supplier Certification; Guarantee. As a condition of Buyer's
                ---------------------------------
                execution of, and continuing compliance with, this Agreement,
                Supplier shall at Supplier's option comply with the provisions
                of either Section 3.1.1 or Section 3.1.2.

                3.1.1   Supplier Certification. Supplier shall (a) provide a
                        ----------------------
                        certificate from a duly authorized corporate officer of
                        Supplier certifying that, as of the Effective Date,
                        Supplier has a credit rating equal to or higher than the
                        Minimum Investment Grade Rating; or (b) post a letter of
                        credit in a form reasonably acceptable to Buyer in the
                        amount of the Credit Amount from a financial institution
                        with each of: (i) a credit rating of A2 or better from
                        Moody's Investors Service, Inc., (ii) a credit rating of
                        A or better from Standard & Poor's Corporation, and
                        (iii) a Minimum Tangible Net Worth ("MTNW") of one (1)
                        billion dollars.

                3.1.2   Guarantee. In the alternative to the provisions of
                        ---------
                        Section 3.1.1, the Supplier may provide a corporate
                        guarantee, in form and substance as set forth in Exhibit
                        H, made by an entity (the "Guarantor") that:

                        3.1.2.1 has a credit rating equal to or higher than the
                             Minimum Investment Grade Rating, together with a
                             certificate from a duly authorized corporate
                             officer of such Guarantor certifying that, as of
                             the Effective Date, such Guarantor has a credit
                             rating equal to or higher than the Minimum
                             Investment Grade Rating; or

                        3.1.2.2 has a MTNW of no less than one (1) billion
                             dollars, together with a certificate from a duly
                             authorized corporate officer of such Guarantor
                             certifying that, as of the Effective Date, such
                             Guarantor has a MTNW of no less than one (1)
                             billion dollars; or

                        3.1.2.3 posts a letter of credit in a form reasonably
                             acceptable to Buyer in the amount of the Credit
                             Amount from a financial

                                       10


                             institution with each of: (i) a credit rating of A2
                             or better from Moody's Investors Service, Inc.,
                             (ii) a credit rating of A or better from Standard &
                             Poor's Corporation, and (iii) a Minimum Tangible
                             Net Worth ("MTNW") of one (1) billion dollars.

        3.2     Compliance.
                ----------

                3.2.1   Reporting. If at any time during the term of this
                        ---------
                        Agreement, Standard & Poor's Corporation, Moody's
                        Investors Service, Inc. or another nationally recognized
                        firm downgrades the credit rating of Supplier, the
                        Guarantor, or the financial institution that issued the
                        letter of credit, as applicable, then Supplier shall
                        provide Buyer with written notice of such change of
                        circumstance within two (2) Business Days of any such
                        change. In the event such a downgrade also constitutes
                        an Event of Default pursuant to Section 17, the
                        requirements of this Section 3.2.1 are in addition to,
                        and not in lieu of, the requirements of Section 17.

4.      SUPPLY SERVICE

        4.1     Obligations of the Parties.
                --------------------------

                4.1.1   Supply Amount. Supplier shall be required to provide the
                        -------------
                        Supply Amount in any Dispatch Hour. As provided in
                        Section 5.1, Buyer shall makereasonable efforts to
                        ensure that the Supply Amount is no greater than
                        necessary to satisfy Buyer's TRR.

                        4.1.1.1 With the Buyer's prior consent, not to be
                             unreasonably withheld or delayed, Supplier shall be
                             entitled to generate or otherwise procure the
                             Supply Amount from sources other than the Asset
                             Bundle.

                        4.1.1.2 Supplier shall deliver the Supply Amount to
                             Buyer during the Dispatch Hour on a continuous
                             basis at the Point(s) of Delivery and shall
                             schedule the Supply Amount in accordance with the
                             Buyer's OATT or the ISA's OATT, as applicable.

                        4.1.1.3 The Buyer at its sole discretion shall designate
                             the allocation of the Supply Amount between Energy
                             and Ancillary Services in accordance with the
                             notification provisions of Section 5.

                                4.1.1.3.1 The Parties recognize that operation
                                          of the Asset Bundle is subject to, and
                                          thus the Supply Amount at times may be
                                          limited by, the operational parameters
                                          of the Asset Bundle. The Parties
                                          further recognize that the
                                          consolidation of two or more
                                          generating units into an Asset Bundle
                                          precludes contractual provisions
                                          addressing such operational

                                       11


                                        parameters in a matter normally applied
                                        to Energy purchases from specified
                                        generating units. Consequently, Supplier
                                        will have the right to raise concerns
                                        regarding the effect of such operational
                                        parameters upon Buyer's scheduling
                                        requests, and Buyer will make good faith
                                        efforts to alleviate Supplier's
                                        concerns.

                4.1.2   Minimum Annual Energy Take. The Buyer shall accept a
                        --------------------------
                        minimum annual energy take during each Contract Year.
                        The Minimum Annual Energy Take shall be set forth on
                        Exhibit A.

                        4.1.2.1 Buyer's Obligation to Take. If Buyer is
                                --------------------------
                           unwilling to accept the Minimum Annual Energy Take
                           for any Contract Year, as may be adjusted pursuant to
                           Section 4.1.2.2, the difference (in MWh) between the
                           Supply Amount of Energy (including consideration for
                           Energy that would have been taken but was unavailable
                           due to Permitted Deratings or Force Majeure, as well
                           as the Total Amount of Energy Replaced) and the
                           Minimum Annual Energy Take shall be billed at the
                           Price Ceiling of Energy less the Price Floor of
                           Energy. An example of the monthly determination of
                           the amount of Energy to be credited against the
                           Minimum Annual Energy Take is shown on Exhibit L.

                        4.1.2.2 Adjustments to Minimum Annual Energy Take. Buyer
                                -----------------------------------------
                           shall have the right to reduce the Minimum Annual
                           Energy Take if the number of customers taking
                           electric service from Buyer falls below the number of
                           customers on December 31, 2000. Adjustments will be
                           applicable, on a pro rata basis, on the first (1/st/)
                           day of the month immediately following Supplier's
                           receipt of Buyer's notice of adjustment. Buyer shall
                           provide supporting data in reasonable detail to
                           support its calculations. An example of the
                           calculation of a revised Minimum Annual Energy Take
                           is shown on Exhibit K.

                4.1.3   Supplier Rights to Output. Supplier may sell to others
                        -------------------------
                        any portion of the Asset Bundle Capacity in excess of
                        the Supply Amount.


                4.1.4   Point(s) of Delivery. Supplier shall deliver, and Buyer
                        --------------------
                        shall take delivery of, the Supply Amount of Energy at
                        the Point(s) of Delivery. Subject to Section 4.1.6.2,
                        Supplier shall be responsible for all costs associated
                        with delivery of the Supply Amount of Energy to the
                        Point(s) of Delivery.

                4.1.5   Alternative Points of Delivery. For any Dispatch Hour,
                        ------------------------------
                        either Party may designate one or more alternative
                        Points of Delivery, subject to the other Party's prior
                        approval and consistent with the Buyer's OATT or

                                       12


                        the ISA's OATT, as applicable, such approval not to be
                        unreasonably withheld or delayed.

                        4.1.5.1 If Supplier has designated an alternative Point
                             of Delivery, Supplier shall be responsible for all
                             costs of delivery to such alternative Point of
                             Delivery.

                        4.1.5.2 If Buyer has designated an alternative Point of
                             Delivery, Buyer shall be responsible for all costs
                             of delivery to such alternative Point of Delivery.

                4.1.6   Fuel. Buyer shall have no responsibility for any fuel
                        ----
                        procurement or fuel transportation costs or activities
                        associated with the Asset Bundle during the term of this
                        Agreement.

                4.1.7   Resale. Except as provided in the next sentence, the
                        ------
                        Supply Amount may be resold by Buyer only as necessary
                        to satisfy Buyer's TRR. If, after submitting the request
                        of the Supply Amount pursuant to Section 5.1, the Buyer
                        determines that the scheduled Supply Amount, together
                        with purchases scheduled under Buyer's other
                        Transitional Power Purchase Agreements, exceeds Buyer's
                        most current projected TRR, then the Buyer also shall
                        resell at wholesale that amount of Energy in excess of
                        Buyer's actual TRR as necessary to balance its load and
                        resources.

                4.1.8   Right to Review. Buyer and Supplier each shall have the
                        ---------------
                        right to review during normal business hours the
                        relevant books and records of the other Party to confirm
                        the accuracy of such as it pertains to transactions
                        under this Agreement. The review shall be consistent
                        with standard business practices and shall follow
                        reasonable notice to the other Party. Reasonable notice
                        for a review of the previous month's records shall be at
                        least a twenty-four (24) hour period from a Business Day
                        to a subsequent Business Day. If a review is requested
                        of other than the previous month's records, then notice
                        of that request shall be provided with a minimum of
                        seven (7) calendar days written notice by the requesting
                        Party. The notice shall specify the period to be covered
                        by the review. The Party providing records can make
                        reasonable requests that the receiving Party keep the
                        records confidential, and the receiving Party shall take
                        reasonable steps to accommodate such requests.

        4.2     Liquidated Damages.
                ------------------

                4.2.1   If the Delivered Amount of Energy is less than the
                        Supply Amount of Energy in any Dispatch Hour during a
                        month, and Replacement Costs computed in respect of such
                        month are greater than zero, then Supplier shall
                        reimburse Buyer for such Replacement Costs. If
                        Supplier's schedule of Ancillary Services is less than
                        the Supply Amount of

                                       13


                        Ancillary Services in any Dispatch Hour during a month,
                        Supplier shall reimburse Buyer for such Replacement
                        Costs for the difference between Supplier's schedule and
                        the Supply Amount of Ancillary Services. An example of
                        the methodology used to calculate Replacement Costs is
                        provided in Exhibit D.

                4.2.2   Supplier also shall be responsible for any costs
                        incurred by Buyer associated with a violation of
                        reliability criteria (including but not limited to
                        imbalance costs or penalties) due to a deviation between
                        the Supply Amount and Delivered Amount.

                4.2.3   The Parties recognize and agree that the payment of such
                        amounts by Supplier pursuant to this Section 4.2 is an
                        appropriate remedy in the event of such a failure and
                        that any such payment does not constitute a forfeiture
                        or penalty of any kind, but rather constitutes actual
                        costs to Buyer under the terms of this Agreement.

        4.3     Supplier Operating Representative. Supplier shall provide and
                ---------------------------------
                maintain a twenty-four (24) hour seven (7) day per week
                communication link with Buyer's control center and with Buyer's
                schedulers. Supplier's Operating Representatives shall be
                available to address and make decisions on all operational
                matters under this Agreement on a twenty-four (24) hour seven
                (7) day per week basis.

5.      NOTIFICATION

        5.1     Scheduling Notification. Buyer shall provide Supplier with a
                -----------------------
                request of the Supply Amount no later than twenty-four (24)
                hours before day-ahead bids must be submitted to the CALPX.
                Buyer shall make reasonable efforts to ensure that the request
                of the Supply Amount is no greater than that amount then
                projected to be necessary to satisfy Buyer's TRR. In addition,
                for each Supply Amount request, the change in the Supply Amount
                from one (1) hour to the next hour shall be no greater than the
                ramping capability of the units within the Asset Bundle as shown
                in Exhibit A.

        5.2     Availability Notification.
                -------------------------

                5.2.1   No later than 5:00 a.m. (Pacific Time) of each day,
                        Supplier shall deliver to Buyer an Availability Notice
                        in the form set forth in Exhibit G.

                5.2.2   Availability Notices shall provide, for the ninety-six
                        (96) hour period starting at 6:00 a.m. (Pacific Time)
                        that day, Supplier's hourly projection of the
                        unavailability or derating ("Derating") of the Asset
                        Bundle compared to the Asset Bundle Capacity figures
                        stated for each unit in Exhibit A. Each Availability
                        Notice also shall contain, as applicable:

                                       14


                        (a)  the units which are subject to a Derating;
                        (b)  the magnitude of the Derating;
                        (c)  the hours during which the Derating is expected to
                             apply;
                        (d)  the cause of the Derating;
                        (e)  the extent, if any, to which the Derating is
                             attributable to a Permitted Derating;
                        (f)  the projected Asset Bundle Capacity for each
                             unit during the period covered by the
                             Availability Notice, pursuant to Section 5.2.4
                             below; and
                        (g)  remaining freeboard of each of the Asset Bundle
                             water treatment storage ponds and the forecast
                             inlet flow rate to the brine concentrator treatment
                             plant.

                5.2.3   If and to the extent a Derating is the result of one or
                        more of the following causes, it shall be a Permitted
                        Derating:

                        (a)  approved planned outages pursuant to Section 21;
                        (b)  response to an Emergency Condition as described in
                             Section 20;
                        (c)  subject to the limitations expressed in Section
                             12.5, a Force Majeure event;
                        (d)  a Control Installation Outage pursuant to Section
                             21.3; or
                        (e)  lack of water treatment pond storage capacity at
                             the Asset Bundle; provided that such lack of water
                             treatment pond storage capacity is not due to
                             Supplier's sales to parties other than Buyer;
                             provided further that (i) Buyer shall have the
                             option to augment the Asset Bundle's brine
                             concentrator treatment plant capacity at Buyer's
                             cost and (ii) notwithstanding subsection
                             5.2.3(e)(i), Supplier shall pay for the costs of
                             augmenting such brine concentrator treatment plant
                             capacity to the extent that the lack of water
                             treatment pond storage capacity at the Asset Bundle
                             is caused by Supplier's sales to parties other than
                             Buyer.

                5.2.4   In respect of any Dispatch Hour, the Asset Bundle
                        Capacity of each unit shall be the Asset Bundle Capacity
                        figure stated in Exhibit A minus any Permitted Derating
                        applicable during such hour.

                5.2.5   Neither the Asset Bundle Capacity nor the Supply Amount
                        shall be reduced by Deratings which are not Permitted
                        Deratings. Supplier shall be responsible for all
                        Replacement Costs, pursuant to Section 4.2.1, caused by
                        Deratings that are not Permitted Deratings.

                                       15


6.      PRICING OF ENERGY AND ANCILLARY SERVICES

        6.1     Overview. The price of Energy paid by Buyer to Supplier shall be
                --------
                based upon a designated hourly market price, subject to monthly
                floor, monthly ceiling, and annual true-up provisions. The Price
                Floor of Energy will ensure that Supplier will receive an
                average price for Energy for each month which is not less than
                the price stated in Exhibit B. The Price Ceiling of Energy
                provision provides that the average price of Energy paid to
                Supplier each month and for each year shall not exceed the price
                stated in Exhibit B.

        6.2     Price of Energy.
                ---------------

                6.2.1   Market Price of Energy. In respect of any Dispatch Hour,
                        ----------------------
                        the designated Market Price of Energy shall be the South
                        of Path 15 ("SP 15") hourly market-clearing price in the
                        day-ahead market from the CALPX as published at the
                        following Web Site (or its successor web site)
                        http://www.calpx.com/prices/index_prices_dayahead_
                        --------------------------------------------------
                        trading.html. Should this hourly market in the day-ahead
                        ------------
                        market not exist for the entire term, the Parties shall
                        agree upon a similar market price index.

                6.2.2   Price Floor of Energy. The Price Floor of Energy is
                        ---------------------
                        stated in Exhibit B and shall not change during the term
                        of this Agreement.

                6.2.3   Price Ceiling of Energy. The Price Ceiling of Energy is
                        -----------------------
                        stated in Exhibit B and shall not change during the term
                        of this Agreement.

        6.3     Pricing of Ancillary Services. The price of the capacity
                -----------------------------
                component of Ancillary Services is stated in Exhibit B. The
                price of Ancillary Services shall not change during the term of
                the Agreement. Supplier shall make available to Buyer and Buyer
                shall offer to pass through the Energy portion of Ancillary
                Services with respect to the Supply Amount to the ISA, or
                Control Area Operator, at the Price Ceiling of Energy (plus
                expected direct transaction costs). The net proceeds shall be
                credited to the Supplier pursuant to Section 7.

        6.4     Price Revisions. The Parties waive any and all rights to seek to
                ---------------
                revise the provisions of this Agreement, including the prices
                stated, pursuant to Sections 205 and/or 206 of the Federal Power
                Act.

7.      INVOICING AND PAYMENTS

        7.1     Invoicing and Payment. On or before the tenth (10/th/) day of
                ---------------------
                each month, Supplier shall send to Buyer an invoice setting
                forth the Supply Amount, Delivered Amount, the Market Price of
                Energy pursuant to Section 6.2.1 for each Dispatch Hour in the
                previous month, any amount due in accordance with Section 7.13
                and the total due from Buyer. The invoice shall be calculated
                based upon data available to Supplier and shall be in accordance
                with this Section 7 and Exhibit C. Buyer shall promptly notify
                Supplier if Buyer in good faith disputes any portion

                                       16


                of the invoice, stating in reasonable detail the reason for the
                dispute.

        7.2     Monthly Invoice Calculation. On each monthly invoice, Supplier
                ---------------------------
                shall calculate the following amounts:

                7.2.1   The Delivered Amount in respect of each Dispatch Hour
                        multiplied by the corresponding Market Price of Energy
                        pursuant to Section 6.2.1, summed over the billing
                        period;

                7.2.2   Sum of the Delivered Amounts in respect of all Dispatch
                        Hours of the billing period multiplied by the Price
                        Ceiling of Energy;

                7.2.3   Sum of the Delivered Amounts in respect of all Dispatch
                        Hours of the billing period multiplied by the Price
                        Floor of Energy;

                7.2.4   For each Dispatch Hour of the billing period, the
                        shortfall, if any, between the Supply Amount and the
                        Delivered Amount (and in the case of Ancillary Services
                        the shortfall between the Supply Amount of Ancillary
                        Services and Supplier's schedule of Ancillary Services);

                7.2.5   The Supply Amount of Ancillary Service for each dispatch
                        hour multiplied by the price of Ancillary Services as
                        stated in Exhibit B; and

                7.2.6   The Delivered Amount of Energy related to Ancillary
                        Services for each dispatch hour multiplied by the Price
                        Ceiling of Energy as stated in Exhibit B.

                7.2.7   If applicable, any amount to be calculated in accordance
                        with Section 7.13.

        7.3     Supplier's Invoice. Supplier will invoice the lesser of the
                ------------------
                amounts calculated in Sections 7.2.1 and 7.2.2, provided that if
                the amount calculated in Section 7.2.1 is less than the amount
                calculated in Section 7.2.3, Supplier shall invoice Buyer the
                amount calculated in Section 7.2.3. Supplier shall also include
                in its invoice the amounts calculated in Sections 7.2.5, 7.2.6
                and 7.2.7. If the Delivered Amount exceeds the Supply Amount,
                Buyer shall not be obligated to pay for the excess amount. Buyer
                shall pay Supplier for the amounts invoiced pursuant to Section
                7.2.6 upon Buyer's receipt of payment from ISA or Control Area
                Operator. Examples of this monthly invoice calculation (and
                annual true-up process) are contained in Exhibit C.

        7.4     Buyer's Invoice. In the event any shortfall occurs pursuant to
                ---------------
                Section 7.2.4 or payment is due to Buyer pursuant to Section
                7.13, Buyer shall within ten (10) Business Days of receipt of
                Supplier's invoice deliver to Supplier a Buyer's invoice
                detailing any Replacement Costs or other payment due. Buyer
                shall provide supporting data in reasonable detail to support
                its calculations of Replacement Costs. Supplier shall promptly
                notify Buyer if Supplier in good faith disputes any portion of
                the invoice, stating in reasonable detail the reason for the
                dispute. If the Buyer's invoice results in an amount due from
                Supplier to

                                       17


                Buyer, Buyer may offset such amount from its payment of
                Supplier's corresponding invoice.

                Buyer shall have the right to adjust the invoices issued in
                accordance with this Section 7.4 if Buyer incurs Replacement
                Costs that were not known when earlier invoices were issued.
                Adjusted invoices shall be issued within thirty (30) days of the
                date on which the additional Replacement Costs become known.
                Buyer shall provide supporting data in reasonable detail to
                support its calculations of Replacement Costs. Supplier shall
                promptly notify Buyer if Supplier in good faith disputes any
                portion of the invoice, stating in reasonable detail the reason
                for the dispute. If the Buyer's adjusted invoice results in an
                amount due from Supplier to Buyer, Buyer may offset such amount
                from its payment of Supplier's corresponding invoice.

        7.5     Annual True-Up Mechanism for Energy.
                -----------------------------------

                7.5.1   The annual true-up mechanism will provide adjustments
                        among the Parties with respect to each Contract Year in
                        the following scenarios:

                        (a)     If (i) the Price Ceiling of Energy multiplied by
                                the hourly Delivered Amount of Energy summed
                                over the Contract Year is less than or equal to
                                (ii) the Market Price of Energy for each hour
                                pursuant to Section 6.2.1 multiplied by the
                                Delivered Amount of Energy for each hour during
                                the Contract Year, Supplier shall subtract (x)
                                the amount invoiced by Supplier for Energy
                                pursuant to Section 7.3 summed of over the
                                Contract Year from (y) the Price Ceiling of
                                Energy multiplied by the hourly Delivered Amount
                                of Energy summed over the Contract Year. If the
                                difference calculated in accordance with the
                                preceding sentence is greater than or equal to
                                zero, Buyer shall pay the difference to
                                Supplier. If the difference is less than zero,
                                Supplier shall refund the difference to Buyer.

                        (b)     If (i) the Price Ceiling of Energy multiplied by
                                the hourly Delivered Amount of Energy summed
                                over the Contract Year is greater than or equal
                                to (ii) the Market Price of Energy for each hour
                                pursuant to Section 6.2.1 multiplied by the
                                Delivered Amount of Energy for each hour during
                                the Contract Year, Supplier shall subtract (x)
                                the amount invoiced by Supplier for Energy
                                pursuant to Section 7.3 summed of over the
                                Contract Year from (y) the Market Price of
                                Energy multiplied by the hourly Delivered Amount
                                of Energy summed over the Contract Year. If the
                                difference calculated in accordance with the
                                preceding sentence is greater than or equal to
                                zero, Buyer shall pay the difference to
                                Supplier. If the difference is less than zero,
                                Supplier shall refund the difference to Buyer.

                                       18


                        (c)     If Buyer incurred Replacement Costs for energy
                                during the Contract year, Supplier shall
                                multiply the Total Amount of Energy Replaced
                                during the Contract Year by the Average Cost of
                                Delivered Energy after true-up as determined in
                                accordance with Section 7.5.1 (a) or 7.5.1 (b).
                                If the amount so obtained is greater than the
                                sum of the monthly Gross Replacement Costs of
                                Energy from Buyer's Invoices for the Contract
                                Year, the Adjusted Replacement Cost of Energy
                                for the Contract Year shall be zero. If the
                                amount so obtained is less than the sum of the
                                monthly Gross Replacement Costs of Energy from
                                Buyer's Invoices for the Contract Year, the
                                Adjusted Replacement Cost of Energy for the
                                Contract Year shall be the sum of the monthly
                                Gross Replacement Costs of Energy less the
                                amount obtained in accordance with the first
                                sentence of this Section 7.5.1(c).

                                If the Adjusted Replacement Cost of Energy is
                                greater than the sum of the monthly Invoiced
                                Replacement Costs of Energy from Buyer's
                                Invoices for the Contract Year, Supplier shall
                                pay the difference to Buyer. If the sum of the
                                monthly Invoiced Replacement costs of Energy is
                                greater than the Adjusted Replacement Cost of
                                Energy, Buyer shall pay the difference to
                                Seller.

                7.5.2   True-up adjustments will be calculated by Supplier
                        within twenty (20) days after each Contract Year.
                        Examples of the true-up calculations and invoice form
                        are set forth in Exhibit E. Interest shall be calculated
                        pursuant to 18 CFR Section 35.19a and shall be included
                        in the true-up invoice. Invoices for true-up adjustments
                        shall be submitted by Supplier within thirty (30) days
                        after the end of the Contract Year. Payments for such
                        invoices shall be due from Buyer thirty (30) days from
                        receipt of the true-up invoice.

        7.6     Invoice Disagreements. Should there be a good faith dispute over
                ---------------------
                any invoice, the Parties shall promptly seek resolution pursuant
                to Section 13. Pending resolution of the invoice dispute,
                payment shall be made or offsets or credits taken, as
                applicable, based upon the undisputed portion of the invoice.

        7.7     Adjustments. Upon resolution of the dispute, the prevailing
                -----------
                Party shall be entitled to receive the disputed amount, as
                finally determined to be payable along with interest (calculated
                pursuant to 18 C.F.R. (S) 35.19a through the date of payment. No
                invoice (or payment covered thereby) shall be subject to
                adjustment unless notice or request for adjustment is given
                within one (1) year of the date payment thereunder was due.

        7.8     Method of Payment. Subject to Sections 7.3, 7.6 and 7.7, Buyer
                -----------------
                shall remit all amounts due by wire or electronic fund transfer,
                pursuant to Supplier's invoice instructions, no later than
                thirty (30) days after receipt of the invoice.

                                       19


        7.9     Overdue Payments. Overdue payments shall bear interest from and
                ----------------
                including, the due date to the date of payment on the unpaid
                portion calculated pursuant to 18 C.F.R.(S) 35.19a.

        7.10    Buyer Right to Offset. Buyer shall have the right to offset any
                ---------------------
                amounts Supplier owes to Buyer, including Replacement Costs
                (except for such amounts disputed in good faith by Supplier),
                against the amounts owed by Buyer to Supplier.

        7.11    Taxes. Each Party shall pay ad valorem and other taxes
                -----
                attributed to its facilities and services provided. Supplier
                shall not include any taxes of any kind in its invoices to
                Buyer. The prices of Energy and Ancillary Services shall not
                change during the term of this Agreement as a result of any
                changes in local, state or federal taxes, fees or levies.

        7.12    Late Invoices. If either Party submits an invoice outside of the
                -------------
                time deadlines set forth herein, that Party shall not forfeit
                its rights to collect the amounts due thereunder, provided that
                such invoice is no more than six (6) months late, and provided
                that changes to invoices remain subject to the deadline in
                Section 7.7.

        7.13    Termination Prior to March 1, 2003. Notwithstanding any other
                ----------------------------------
                provision herein, in the event that this Agreement is terminated
                before March 1, 2003 and as a result of such termination Buyer
                is entitled to a payment in accordance with Section 2.3.1,
                Supplier shall include an amount calculated in accordance with
                Section 2.3.1 and Exhibit J, to be paid by Supplier to Buyer in
                the next monthly invoice submitted to Buyer following such
                termination.

8.      REGULATORY APPROVALS

        8.1     This Agreement will be filed with the FERC and any other
                appropriate regulatory agencies by the appropriate Party as may
                be required.

9.      COMPLIANCE

        9.1     Each Party shall comply with all relevant Laws and shall, at its
                sole expense, maintain in full force and effect all relevant
                permits, authorizations, licenses, and other authorizations
                material to the maintenance of facilities and the performance of
                obligations under this Agreement.

        9.2     Each Party and its representatives shall comply with all
                relevant requirements of any authorized Control Area Operator,
                ISA, and/or EDU to ensure the safety of its employees and the
                public, and to ensure electric system reliability and integrity,
                material to the performance of this Agreement.

        9.3     Buyer and Supplier shall perform or cause to be performed, their
                obligations under this Agreement in all material respects in
                accordance with Good Utility

                                       20


                Practices. Supplier covenants and agrees that as of the
                Effective Date it or its permitted assignee shall (a) have the
                right to control the operation of the Asset Bundle and (b) be
                willing and able to perform its obligations under this
                Agreement.

10.     INDEMNIFICATION

        10.1    To the fullest extent permitted by law, a Party to this
                Agreement ("the Indemnifying Party") shall indemnify, defend and
                hold harmless the other Party, its parent, affiliates, and
                successors and agents (each an "Indemnified Party") from and
                against any and all claims, demands, suits, obligations,
                payments, liabilities, costs, judgments, damages, losses or
                expenses asserted by third parties against an Indemnified Party
                and arising out of, relating to, or resulting from the
                Indemnifying Party's breach of, or the negligent performance of
                its obligations under this Agreement.

                10.1.1  Such indemnity shall also extend to actual courts costs,
                        attorneys' fees, expenses and other liabilities incurred
                        in the defense of any claim, action or proceeding,
                        including negotiation, settlement, defense and appeals,
                        to which this indemnification obligation applies. In
                        furtherance of the foregoing indemnification and not by
                        way of limitation thereof, the Indemnifying Party hereby
                        waives any defense it otherwise might have against the
                        Indemnified Party under applicable workers' compensation
                        laws.

                10.1.2  In claims against any Indemnified Party by an agent of
                        the Indemnifying Party, or anyone directly or indirectly
                        employed by them or anyone for whose acts they may be
                        liable, the indemnification obligation under this
                        Section 10 shall not be limited by a limitation on
                        amount or type of damages, compensation or benefits
                        payable by or for the Indemnifying Party or a
                        subcontractor under workers' or workmen's compensation
                        acts, disability benefit acts or other employee benefit
                        acts.

                10.1.3  Such indemnity shall also extend to all costs and
                        expenses incurred by the Indemnified Party in any action
                        or proceeding to enforce the provisions of this
                        Agreement, but only if and to the extent the Indemnified
                        Party prevails in such action or proceeding.

        10.2    No Negation of Existing Indemnities; Survival. Each Party's
                ---------------------------------------------
                indemnity obligations hereunder shall not be construed to
                negate, abridge or reduce other rights or obligations or
                indemnity which would otherwise exist at law or equity. The
                obligations contained herein shall survive any termination,
                cancellation, or suspension of this Agreement to the extent that
                any third party claim is commenced during the applicable statute
                of limitations period.

        10.3    Indemnification Procedures.
                --------------------------

                                       21


                10.3.1  Any Party seeking indemnification under this Agreement
                        shall give the other Party notice of such claim promptly
                        but in any event on or before thirty (30) days after the
                        Party's actual knowledge of such claim or action. Such
                        notice shall describe the claim in reasonable detail,
                        and shall indicate the amount (estimated if necessary)
                        of the claim that has been, or may be sustained by, said
                        Party. To the extent that the other Party will have been
                        actually and materially prejudiced as a result of the
                        failure to provide such notice, such notice will be a
                        condition precedent to any liability of the other Party
                        under the provisions for indemnification contained in
                        this Agreement.

                10.3.2  In any action or proceeding brought against an
                        Indemnified Party by reason of any claim indemnifiable
                        hereunder, the Indemnifying Party may, at its sole
                        option, elect to assume the defense at the Indemnifying
                        Party's expense, and shall have the right to control the
                        defense thereof and to determine the settlement or
                        compromise of any such action or proceeding.
                        Notwithstanding the foregoing, an Indemnified Party
                        shall in all cases be entitled to control its defense in
                        any action if it:

                        (i)     may result in injunctions or other equitable
                                remedies in respect of the Indemnified Party
                                which would affect its business or operations in
                                any materially adverse manner;

                        (ii)    may result in material liabilities which may not
                                be fully indemnified hereunder; or

                        (iii)   may have a significant adverse impact on the
                                business or the financial condition of the
                                Indemnified Party (including a material adverse
                                effect on the tax liabilities, earnings or
                                ongoing business relationships of the
                                Indemnified Party) even if the Indemnifying
                                Party pays all indemnification amounts in full.

                10.3.3  Subject to Section 10.3.2, neither Party may settle or
                        compromise any claim for which indemnification is sought
                        under this Agreement without the prior consent of the
                        other Party; provided, however, said consent shall not
                        be unreasonably withheld or delayed.

                                       22


11.     LIMITATION OF LIABILITY

        11.1    Responsibility for Damages: Except as otherwise provided herein
                --------------------------
                or to the extent of the other Party's negligence or willful
                misconduct, each Party shall be responsible for all physical
                damage to or destruction of the property, equipment and/or
                facilities owned by it and its affiliates and any physical
                injury or death to natural Persons resulting therefrom,
                regardless of who brings the claim and regardless of who caused
                the damage, and shall not seek recovery or reimbursement from
                the other Party for such damage; provided, that in any such case
                the Parties will exercise Due Diligence to remove the cause of
                any disability at the earliest practicable time.

        11.2    No Consequential Damages: To the fullest extent permitted by law
                ------------------------
                and notwithstanding other provisions of this Agreement, in no
                event shall a Party, or any of its Agents, be liable to the
                other Party, whether in contract, warranty, tort, negligence,
                strict liability, or otherwise, for special, indirect,
                incidental, multiple, consequential (including but not limited
                to lost profits or revenues and lost business opportunities), or
                punitive damages related to or resulting from performance or
                nonperformance of this Agreement or any activity associated with
                or arising out of this Agreement. For purposes of clarification,
                Replacement Costs shall not be considered consequential or
                incidental damages under this Section 11.2. In addition, this
                limitation on liability shall not apply with respect to claims
                pursuant to Section 10 hereof.

        11.3    Survival: The provisions of this Section 11 shall survive any
                --------
                termination, cancellation, or suspension of this Agreement.

12.     FORCE MAJEURE

        12.1    An event of "Force Majeure" shall be defined as any interruption
                or failure of service or deficiency in the quality or quantity
                of service or any other failure to perform any of its
                obligations hereunder to the extent such failure occurs without
                fault or negligence on the part of that Party and is caused by
                factors beyond that Party's reasonable control, which by the
                exercise of reasonable diligence that Party is unable to
                prevent, avoid, mitigate or overcome, including:

                (i)     acts of God or the public enemy, such as storms, flood,
                        lightning, and earthquakes,

                (ii)    failure, threat of failure, or unscheduled withdrawal of
                        facilities from operation for maintenance or repair, and
                        including unscheduled transmission and distribution
                        outages,

                (iii)   sabotage of facilities and equipment,

                (iv)    civil disturbance,

                (v)     strike or labor dispute,

                                       23


                (vi)    action or inaction of a court or public authority, or

                (vii)   any other cause of similar nature beyond the reasonable
                        control of that Party.

        12.2    Economic hardship of either Party shall not constitute Force
                Majeure under this Agreement. Notwithstanding this, if Buyer
                suffers an event of Force Majeure it shall be relieved of its
                obligation to take delivery of, or otherwise pay for, Energy and
                Ancillary Services under this Agreement for the duration of the
                event of Force Majeure. In addition, if Buyer is unable to have
                Energy and Ancillary Services delivered from the Point(s) of
                Delivery to its service territory due to an outage on the
                Transmission System, that shall be considered a Force Majeure
                event and shall relieve Buyer of performance for the extent of
                the event.

        12.3    In the event of a Force Majeure, neither Party shall be
                considered in default under this Agreement or responsible to the
                other Party in tort, strict liability, contract or other legal
                theory for damages of any description, and affected performance
                obligations shall be extended by a period equal to the term of
                the resultant delay, but in no event shall exceed the term of
                the Agreement, provided that the Party relying on a claim of
                Force Majeure:

                (i)     provides prompt written notice of such Force Majeure
                        event to the other Party, giving an estimate of its
                        expected duration and the probable impact on the
                        performance of its obligations hereunder;

                (ii)    exercises all reasonable efforts to continue to perform
                        its obligations under this Agreement;

                (iii)   expeditiously takes action to correct or cure the event
                        or condition excusing performance so that the suspension
                        of performance is no greater in scope and no longer in
                        duration than is dictated by the problem; provided,
                        however, that settlement of strikes or other labor
                        disputes will be completely within the sole discretion
                        of the Party affected by such strike or labor dispute;

                (iv)    exercises all reasonable efforts to mitigate or limit
                        damages to the other Party; and

                (v)     provides prompt notice to the other Party of the
                        cessation of the event or condition giving rise to its
                        excuse from performance.

        12.4    Notwithstanding the above provisions, a Force Majeure event
                shall excuse Supplier from its obligation to deliver the Supply
                Amount pursuant to Section 4 of this Agreement only for the
                first twenty-four (24) hours of the Force Majeure event;
                provided that the total amount of energy excused in accordance
                with this Section 12.4 during any Contract Year shall not exceed
                the Limit on Excused Energy set forth in Exhibit A. After such
                twenty-four (24) hour period, Supplier

                                       24


                must either deliver the Supply Amount at the Point(s) of
                Delivery or pay liquidated damages pursuant to Section 4.2 of
                this Agreement. Provided further, to the extent a Force Majeure
                event is caused by an outage on the Transmission System,
                Supplier shall be excused from its obligations to deliver the
                Supply Amount for the duration of the outage.

        12.5    If Supplier has notified Buyer of an event of Force Majeure, and
                if Supplier so requests, Buyer will attempt to replace the
                Supply Amount that is not excused in accordance with Section
                12.4 with Energy or Ancillary Services from another Asset
                Bundle. However, Buyer's inability to acquire such replacement
                Energy or Ancillary Services shall not excuse Supplier from
                Supplier's obligation to deliver the Supply Amount not otherwise
                excused in accordance with Section 12.4

13.     DISPUTES

        13.1    Any action, claim or dispute which either Party may have against
                the other arising out of or relating to this Agreement or the
                transactions contemplated hereunder, or the breach, termination
                or validity thereof (any such claim or dispute, a "Dispute")
                shall be submitted in writing to the other Party. The written
                submission of any Dispute shall include a concise statement of
                the question or issue in dispute together with a statement
                listing the relevant facts and documentation that support the
                claim.

        13.2    The Parties agree to cooperate in good faith to expedite the
                resolution of any Dispute. Pending resolution of a Dispute, the
                Parties shall proceed diligently with the performance of their
                obligations under this Agreement.

        13.3    The Parties shall first attempt in good faith to resolve any
                Dispute through informal negotiations by the Contract
                Representatives. In the event that the Contract Representatives
                are unable to satisfactorily resolve the Dispute within thirty
                (30) days from the receipt of notice of the Dispute, either
                Party may by written notice to the other Party refer the Dispute
                to its respective senior management for resolution as promptly
                as practicable. If the Parties' senior management are unable to
                resolve the Dispute within forty-five (45) days from the date of
                such referral, thereafter the Parties may agree in writing to
                extend the time period of such senior management negotiations.
                In the event the Parties' senior management do not resolve the
                dispute within the prescribed or extended time period, either
                Party may initiate arbitration through the serving and filing of
                a demand for arbitration and the Parties expressly agree that
                arbitration in accordance with this Section 13 shall be the
                exclusive means to further resolve any Dispute and hereby
                irrevocably waive their right to a jury trial with respect to
                any Dispute, provided that at any time:

                13.3.1  A request made by a Party for provisional remedies
                        requesting preservation of the Parties' respective
                        rights and obligations under the Agreement may be
                        resolved by a court of law located in the County of the
                        principal place of business of Buyer.

                                       25


                13.3.2  Nothing in this Agreement shall preclude, or be
                        construed to preclude, any Party from filing a petition
                        or complaint with the FERC or PUCN with respect to any
                        arbitrable Dispute over which said agency has
                        jurisdiction. In such case, the other Party may request
                        the FERC or PUCN, as applicable, to reject or to waive
                        jurisdiction. If jurisdiction is rejected or waived with
                        respect to all or a portion of the Dispute, the portion
                        of the Dispute not so accepted by the FERC or PUCN, as
                        applicable, shall be resolved through arbitration in
                        accordance with this Agreement. To the extent that the
                        FERC or PUCN, as applicable, asserts or accepts
                        jurisdiction over the Dispute, the decision, finding of
                        fact or order of FERC shall be final and binding,
                        subject to judicial review under the Federal Power Act
                        or Nevada Revised Statutes and subject to the provisions
                        of Section 2.2.2. Any arbitration proceedings that may
                        have commenced with respect to the Dispute prior to the
                        assertion or acceptance of jurisdiction by the FERC or
                        PUCN, as applicable, shall be terminated to the extent
                        the FERC or PUCN accepts or asserts jurisdiction over
                        such Dispute.

        13.4    Unless otherwise agreed by the Parties, any arbitration
                initiated under this Agreement shall be conducted in accordance
                with the following:

                13.4.1  Arbitrations shall be held within the County of the
                        principal place of business of Buyer.

                13.4.2  Except as otherwise modified herein, the arbitration
                        shall be conducted in accordance with the "Commercial
                        Arbitration Rules" of the American Arbitration
                        Association ("AAA") then in effect.

                13.4.3  Arbitration shall be conducted by one neutral arbitrator
                        who shall be selected pursuant to the AAA rules and the
                        following:

                        13.4.3.1  The Parties agree that the list of potential
                           arbitrators provided by the AAA shall, if available,
                           contain twenty (20) candidates, and at least fifty
                           percent (50%) of the candidates shall be members of
                           the AAA National Energy Panel.

                        13.4.3.2  The Parties also agree that each shall be
                           allowed to strike the names of five candidates before
                           ranking the remaining candidates and returning the
                           list to the AAA in accordance with the Commercial
                           Arbitration Rules. If the Parties are unable to agree
                           on an arbitrator, such arbitrator shall be appointed
                           by the AAA.

                        13.4.3.3  The arbitrator shall not have any current or
                           past substantial business, financial, or personal
                           relationships with either Party (or their Affiliates)
                           and shall not be a vendor, supplier, customer,
                           employee, consultant, or competitor to either of the
                           Parties or their Affiliates.

                                       26


                    13.4.3.4  The arbitrator shall be authorized only to
                         interpret and apply the provisions of this Agreement or
                         any related agreements entered into under this
                         Agreement and shall have no power to modify or change
                         any provision of this Agreement. The arbitrator shall
                         have no authority to award punitive or multiple damages
                         or any damages inconsistent with this Agreement. The
                         arbitrator shall within thirty (30) days of the
                         conclusion of the hearing, unless such time is extended
                         by agreement of the Parties, notify the Parties in
                         writing of his or her decision, stating his or her
                         reasons for such decision and separately listing his or
                         her findings of fact and conclusions of law. Judgment
                         on the award may be entered in any court having
                         jurisdiction.

        13.5    The Parties shall proceed with the arbitration expeditiously,
                and the arbitration shall be concluded within five (5) months of
                the filing of the demand for arbitration pursuant to this
                Section 13 in order that the decision may be rendered within six
                (6) months of such filing, unless the arbitrator extends such
                time at the request of a Party upon a showing of good cause or
                upon agreement of the Parties.

        13.6    Any arbitration proceedings, decision or award rendered
                hereunder and the validity, effect and interpretation of any
                arbitration agreement shall be governed by the Federal
                Arbitration Act of the United States, 9 U.S.C. (S)(S) 1 et seq.

        13.7    The decision of the arbitrator shall be final and binding on
                both Parties and may be enforced in any court having
                jurisdiction over the Party against which enforcement is sought.

        13.8    The fees and expenses of the arbitrator shall be shared by the
                Parties equally, unless the decision of the arbitrator shall
                specify some other apportionment of such fees and expenses. All
                other expenses and costs of the arbitration shall be borne by
                the Party incurring the same.

14.     NATURE OF OBLIGATIONS

        14.1    Except where specifically stated in this Agreement to be
                otherwise, the duties, obligations, and liabilities of the
                Parties shall be several; not joint or collective. The
                provisions of this Agreement shall not be construed to create an
                association, trust, partnership, or joint venture; to impose a
                trust or partnership duty, obligation, or liability or agency
                relationship on or with regard to either Party.

        14.2    Nothing in this Agreement nor any action taken hereunder shall
                be construed to create any duty, liability, or standard of care
                to any person not a Party to this Agreement. Each Party shall be
                individually and severally liable for its own obligations under
                this Agreement.

        14.3    By this Agreement, neither Party dedicates any part of its
                facilities or the service provided under this Agreement to the
                public.

                                       27


15.     SUCCESSORS AND ASSIGNS

        15.1    This Agreement may be assigned, without express written consent
                of the other Party, as follows:

                15.1.1  Buyer may assign this Agreement or assign or delegate
                        its rights and obligations under this Agreement, in
                        whole or in part, if such assignment is made to an
                        affiliate, parent, subsidiary, successor or any party,
                        provided that such assignee operates all or a portion of
                        the PLR or if such assignment is required by Law or
                        applicable regulations.

                15.1.2  Supplier also may assign this Agreement as provided in
                        Section 11.5 of the Asset Sale Agreement; provided that
                        such assignment is to an entity that (a) has the right
                        to control the operation of the Asset Bundle and (b) is
                        willing and able to perform its obligations under this
                        Agreement.

        15.2    Supplier may, without the consent of Buyer, assign, transfer,
                pledge or otherwise dispose of its rights and interests
                hereunder to a trustee, lending institution, or any Person for
                the purposes of financing or refinancing the Asset Bundle,
                including upon or pursuant to the exercise of remedies under
                such financing or refinancing, or by way of assignments,
                transfers, conveyances of dispositions in lieu thereof;
                provided, however, that no such assignment or disposition shall
                relieve or in any way discharge Supplier or such permitted
                assignee from the performance of its duties and obligations
                under this Agreement. Buyer agrees to execute and deliver such
                documents as may be reasonably necessary to accomplish any such
                assignment, transfer, conveyance, pledge or disposition of
                rights hereunder for purposes of the financing or refinancing of
                the Asset Bundle, so long as Buyer's rights under this Agreement
                are not thereby materially altered, amended, diminished or
                otherwise impaired.

        15.3    Either Party may, without the consent of the other Party, assign
                this Agreement to a successor to all or substantially all of the
                assets of such Party by way of merger, consolidation, sale or
                otherwise, provided such successor assumes and becomes liable
                for all of such Party's duties and obligations hereunder
                including Section 3 hereof.

        15.4    Except as stated above, neither this Agreement nor any of the
                rights, interests, or obligations hereunder shall be assigned by
                either Party, including by operation of law, without the prior
                written consent of the other Party, said consent not to be
                unreasonably withheld. Any assignment of this Agreement in
                violation of the foregoing shall be, at the option of the
                non-assigning Party, void.

        15.5    Except as set forth above, no assignment or transfer of rights
                or obligations under this Agreement by a Party shall relieve
                said Party from full liability and financial responsibility for
                the performance thereof after any such transfer or assignment
                unless and until the transferee or assignee shall agree in
                writing to assume the obligations and duties of said Party under
                this Agreement and the other Party has

                                       28


                consented in writing to such assumption; said consent not to be
                unreasonably withheld.

        15.6    This Agreement and all of the provisions hereof are binding
                upon, and inure to the benefit of, the Parties and their
                respective successors and permitted assigns.

16.     REPRESENTATIONS


        16.1    Representations of the Parties. The Parties represent and
                ------------------------------
                warrant each to the other as follows:

                16.1.1  Incorporation. Buyer is a corporation duly incorporated,
                        -------------
                        validly existing and in good standing under the laws of
                        the State of Nevada. Supplier is a limited liability
                        company duly organized, validly existing and in good
                        standing under the laws of the State of Delaware. Both
                        Buyer and Supplier have all requisite corporate power
                        and authority to own, lease and operate their material
                        assets and properties and to carry on their business as
                        now being conducted.

                16.1.2  Authority. The Party has full corporate power and
                        ---------
                        authority to execute and deliver this Agreement and,
                        subject to the procurement of applicable regulatory
                        approvals, to carry out the actions required of it by
                        this Agreement. The execution and delivery of this
                        Agreement and the transactions contemplated hereby have
                        been duly and validly authorized by all necessary
                        corporate action required on the part of the Party. The
                        Agreement has been duly and validly executed and
                        delivered by the Party and, assuming that it is duly and
                        validly executed and delivered by the other Party,
                        constitutes a legal, valid and binding agreement of the
                        Party.

                16.1.3  Compliance With Law. The Party represents and warrants
                        -------------------
                        that it is not in violation of any applicable Law, or
                        applicable regulation, which violation could reasonably
                        be expected to materially adversely affect the other
                        Party's performance of its obligations under this
                        Agreement. The Party represents and warrants that it
                        will comply with all Laws, and regulations applicable to
                        its compliance with this Agreement, non-compliance with
                        which would reasonably be expected to materially
                        adversely affect either Party's performance of its
                        obligations under this Agreement.

                16.1.4  Representations of Both Parties. The representations in
                        -------------------------------
                        this Section 16 shall continue in full force and effect
                        for the term of this Agreement.

17.     DEFAULT AND REMEDIES

        17.1    An Event of Default hereunder shall be deemed to have occurred
                upon a Party's (Defaulting Party) failure to comply with any
                material obligation imposed upon it by this Agreement. Examples
                of an Event of Default include, but are not limited

                                       29


                to the following:

                (i)     Failure to make any payments due under this Agreement;

                (ii)    Failure to deliver the Supply Amount for a period of
                        five (5) consecutive days;

                (iii)   Failure to follow the directions of a Control Area
                        Operator, ISA, EDU, WSCC, NERC, PUCN, FERC, or any
                        successor thereto where following such directions is
                        required hereunder;

                (iv)    Supplier not being in compliance with Section 3; and

                (v)     Failure of the Guarantor to be in compliance with the
                        terms of the Guarantee delivered under Section 3.1.2.

        17.2    An Event of Default shall be excused:

                17.2.1  In the event such Event of Default was caused by Force
                        Majeure provided that the Party claiming a Force Majeure
                        complies with the requirements of Section 12; and

                17.2.2  In the event such Event of Default was caused by
                        transmission and distribution outages or disruptions.

        17.3    Unless excused, in an Event of Default the Non-Defaulting Party
                shall be entitled to provide written notice (or verbal notice in
                case of emergency followed by written notice) of the Event of
                Default to the Defaulting Party and to specify a cure period,
                which cure period shall be a minimum of thirty (30) days.

        17.4    If an Event of Default is not cured by the Defaulting Party
                during the cure period specified by the Non-Defaulting Party,
                the Non-Defaulting Party shall be entitled to those remedies
                which are not inconsistent with the terms of this Agreement,
                including termination and the payment of liquidated damages. A
                Defaulting Party shall not be liable to the Non-Defaulting Party
                for any punitive, consequential or incidental damages. For
                purposes of clarification, Replacement Costs shall not be
                considered consequential or incidental damages under this
                Section 17.4.

        17.5    Notwithstanding this Section 17, liquidated damages shall be
                paid to Buyer pursuant to Sections 4.2, 12, 18, and 21.

18.     FACILITY ADDITIONS AND MODIFICATIONS

        18.1    Supplier shall be entitled to make additions and modifications
                to the Asset Bundle subject to the following:

                18.1.1  To the extent additions and modifications interfere with
                        the operation of the Asset Bundle in providing the
                        Supply Amount to Buyer beyond the limits for planned
                        outages set forth in Section 21, liquidated

                                       30


                        damages shall be paid to Buyer pursuant to Section 4.2.

                18.1.2  Supplier shall use reasonable efforts to minimize any
                        adverse impact on Buyer during the course of making such
                        additions and modifications.

                18.1.3  Such additions and modifications shall be conducted in
                        accordance with Good Utility Practice, and all
                        applicable Laws, regulations, reliability criteria and
                        the Interconnection Agreement between Buyer and
                        Supplier, dated November 16, 2000, as it may be amended
                        from time to time.

        18.2    Supplier shall seek Buyer's prior written approval for all
                Supplier's additions or modifications to the Asset Bundle which
                might reasonably be expected to have an adverse effect upon
                Buyer with respect to operations or performance under this
                Agreement.

19.     COORDINATION

        19.1    Upon knowledge thereof, each Party shall promptly give notice to
                the other Party of any labor dispute which is delaying or
                threatens to delay the timely performance of this Agreement,
                which shall include a description of the general nature of the
                dispute.

20.     EMERGENCY AND NONEMERGENCY CONDITION RESPONSE

        20.1    Buyer and Supplier shall comply with any applicable requirement
                of any Governmental Authority, NERC, WSCC, ISA, Control Area
                Operator, transmission operator, EDU or any successor of any of
                them, regarding the reduced or increased generation of the Asset
                Bundle in the event of an Emergency Condition or Nonemergency
                Condition.

        20.2    Supplier shall not be obligated to deliver the Supply Amount and
                no liquidated damages shall become due, if the Supply Amount is
                reduced in the event of an Emergency Condition or a Nonemergency
                Condition.

        20.3    Each Party shall provide prompt verbal notice to the other Party
                of any Emergency Condition or Nonemergency Condition.

        20.4    Either Party may take reasonable and necessary action to
                prevent, avoid or mitigate injury, danger, damage or loss to its
                own equipment and facilities, or to expedite restoration of
                service; provided, however, that the Party taking such action
                shall give the other Party prior notice if at all possible
                before taking any action. However, this Section 20.4 shall not
                be construed to supersede Sections 20.2 and 20.3.

21.     OUTAGE SCHEDULING

        21.1    Supplier shall request Buyer's approval prior to any
                inspections, proposed

                                       31


                planned outages or other non-forced outages (all hereinafter
                referred to as "planned outages") of the Asset Bundle so as to
                minimize the impact on the availability of the Asset Bundle.
                Under no circumstances shall Supplier conduct a planned outage
                without the express prior consent of Buyer pursuant to this
                Section 21.

        21.2    Planned Outages.
                ---------------

                21.2.1  Within sixty (60) days following the Effective Date of
                        this Agreement and on or before October 1 of each
                        Contract Year, Supplier shall provide Buyer with a
                        schedule of proposed planned outages for the period
                        beginning on the date of such proposed schedule for the
                        following twelve (12) months. The proposed planned
                        outage schedule will designate days for each unit in
                        which the Asset Bundle Capacity will be reduced in part
                        or total for each such unit. Each proposed schedule
                        shall include all applicable information, including but
                        not limited to the following: Month, day and time of
                        requested outage; facilities impacted (such as Unit and
                        description); duration of outage; purpose of outage;
                        amount of capacity (in MWs) which is derated; other
                        conditions and remarks; and name of contact and phone
                        number.

                21.2.2  Buyer shall promptly review Supplier's proposed schedule
                        and shall either require modifications or approve the
                        proposed schedule. Supplier shall use its best efforts
                        to accomplish all planned outages in accordance with the
                        approved schedule. Supplier shall be responsible to
                        Buyer for Replacement Costs (i) if any outage period
                        exceeds its approved schedule, provided that changes to
                        the approved schedule may be requested by either Party
                        and each Party shall make reasonable efforts to
                        accommodate such changes, provided further the Buyer
                        shall have no obligation to agree to Supplier's
                        revisions to the approved planned outage schedule; and
                        (ii) if Supplier conducts a planned outage without the
                        consent of Buyer as provided herein.

        21.3    Control Installation Outages
                ----------------------------

                21.3.1  Supplier also may schedule such unit outages (each, a
                        "Control Installation Outage") as required to install at
                        the Asset Bundle new or retrofit emission control
                        equipment to the existing Asset Bundle necessary to
                        continue operating the Asset Bundle without sanctions or
                        operating restrictions threatened or imposed by a
                        Governmental Authority. Supplier shall make diligent
                        efforts to include any Control Installation Outage
                        within the proposed planned outage schedule pursuant to
                        Section 21.2.1; provided that, if Supplier is required
                        by such Governmental Authority having jurisdiction over
                        the matter to perform a Control Installation Outage
                        within a specific timeframe and, therefore, Supplier
                        cannot comply with the provisions of the preceding
                        sentence, Supplier at a minimum will provide the
                        following notice:

                                       32


                        i)      Three (3) weeks for each Control Installation
                                Outage with an expected duration of less than
                                one (1) day;

                        ii)     Five (5) weeks for each Control Installation
                                Outage with an expected duration between one (1)
                                and five (5) days; and,

                        iii)    Fifteen (15) weeks for each Control Installation
                                Outage with an expected duration of longer than
                                five (5) days.

                        Moreover, if Supplier is required to perform a Control
                        Installation Outage within a specific timeframe, Buyer,
                        after consultation with Supplier and in accordance with
                        Good Utility Practice, at its sole discretion may
                        designate the period within such timeframe in which a
                        Control Installation Outage may occur.

                21.3.2  Supplier also shall: (i) coordinate and cooperate with
                        Buyer regarding the scheduling of each proposed Control
                        Installation Outage in order to minimize the economic
                        effect on Buyer resulting from such Control Installation
                        Outage; (ii) advise Buyer of its meetings and
                        communications with the Governmental Authority having
                        jurisdiction over the matter and, in its discretion,
                        will invite Buyer to participate in such meetings and
                        communications; and, (iii) take commercially reasonable
                        steps to seek review of any decision of such
                        Governmental Authority requiring a Control Installation
                        Outage during the months of June through September.

22.     REPORTS

        22.1    Supplier shall promptly provide Buyer with copies of any orders,
                decrees, letters or other written communications to or from any
                Governmental Authority asserting or indicating that Supplier
                and/or its Asset Bundle is in violation of Laws which relate to
                Supplier, or operations or maintenance of the Asset Bundle and
                which may have an adverse effect on Buyer. Supplier shall use
                reasonable efforts to keep Buyer appraised of the status of any
                such matters.

23.     COMMUNICATIONS

        23.1    Supplier's Operating Representatives shall be available
                twenty-four (24) hours per day for communications with the
                Control Area Operator and/or the ISA and Buyer to facilitate the
                operations contained in this Agreement.

        23.2    Supplier shall, at its expense, maintain and install real-time
                communications equipment at the Asset Bundle to maintain
                communications between personnel on site at the Asset Bundle,
                Buyer and the Control Area Operator at all times. Supplier shall
                provide at its expense:

                (i)     Ringdown voice telephone lines, and

                (ii)    Equipment to transmit to and receive telecopies from
                        Buyer and the Control Area Operator.

                                       33


        23.3    Supplier shall immediately report to Buyer any "Abnormal
                Condition" that has or may occur, and provide all pertinent
                information, including but not limited to the following:

                (i)     A description of the "Abnormal Condition" and the
                        actions to be taken to alleviate the "Abnormal
                        Condition";

                (ii)    The expected duration including the beginning and ending
                        time of the "Abnormal Condition"; and

                (iii)   The amount of any adjustment to the current (real time)
                        level of Energy and Ancillary Services.

        23.4    Cause of the Condition.
                -----------------------

                23.4.1  An "Abnormal Condition" shall include without limitation
                        any conditions that, to Supplier's knowledge, have or
                        are reasonably likely to:

                        (i)     Adversely affect Supplier's ability to provide
                                Energy and Ancillary Services to Buyer;

                        (ii)    Cause an unplanned reduction in the amount of
                                delivery of Energy and Ancillary Services to
                                Buyer; or

                        (iii)   Cause an unplanned isolation of the Asset Bundle
                                from the transmission system.

        23.5    Supplier shall immediately notify Buyer after such "Abnormal
                Condition" has been alleviated.

24.     NOTICES

        24.1    All notices hereunder shall, unless specified otherwise, be in
                writing and shall be addressed, except as otherwise stated
                herein, to the Parties as set forth in Exhibit F.

        24.2    All written notices or submittals required by this Agreement
                shall be sent either by hand-delivery, regular first class U.S.
                mail, registered or certified U.S. mail postage paid return
                receipt requested, overnight courier delivery, electronic mail
                or facsimile transmission and will be effective and deemed to
                have been received on the date of receipt personally, on the
                date and time as documented by method of delivery if during
                normal business hours or on the next succeeding Business Day, or
                on the third (3/rd/) Business Day following deposit with the
                U.S. mail if sent regular first class U.S. mail.

                                       34


        24.3    Notices of an Event of Default pursuant to Section 17 and or
                Force Majeure pursuant to Section 12 may not be sent by regular
                first class U.S. mail.

        24.4    Any payments required to be made under this Agreement shall be
                made to the Party as set forth in Exhibit F.

        24.5    Each Party shall have the right to change, at any time upon
                written notice to the other Party, the name, address and
                telephone numbers of its representatives under this Agreement
                for purposes of notices and payments.

25.     MERGER

        25.1    The Agreement contains the entire agreement and understanding
                between the Parties with respect to all of the subject matter
                contained herein, thereby merging and superseding all prior
                agreements and representations by the Parties with respect to
                such subject matter.

        25.2    In the event of any conflict between this Agreement and the
                Asset Sale Agreement, the terms of the Asset Sale Agreement
                shall govern.

26.     HEADINGS

        26.1    The headings or section titles contained in this Agreement are
                inserted solely for convenience and do not constitute a part of
                this Agreement between the Parties, nor should they be used to
                aid in any manner in the construction of this Agreement.

27.     COUNTERPARTS AND INTERPRETATION

        27.1    This Agreement may be executed in any number of counterparts,
                each of which shall be deemed an original.

        27.2    In the event an ambiguity or question of intent or
                interpretation arises, this Agreement shall be construed as if
                drafted jointly by the Parties and no presumption or burden of
                proof shall arise favoring or disfavoring any Party by virtue of
                authorship of any of the provisions of this Agreement.

        27.3    Any reference to any federal, state, local, or foreign statute
                or law shall be deemed also to refer to all rules and
                regulations promulgated thereunder, unless the context requires
                otherwise.

        27.4    The word "including" in this Agreement shall mean "including
                without limitation".

28.     SEVERABILITY

        28.1    If any term, provision or condition of this Agreement is held to
                be invalid, void or unenforceable by a court or Governmental
                Authority of competent jurisdiction

                                       35


                and such holding is subject to no further appeal or judicial
                review, then such invalid, void, or unenforceable term,
                provision or condition shall be deemed severed from this
                Agreement and all remaining terms, provisions and conditions of
                this Agreement shall continue in full force and effect, unless,
                however, the effect of the severance would vitiate the intent of
                the Parties hereto, as determined by either Party in its
                reasonable discretion.

        28.2    The Parties shall endeavor in good faith to replace such
                invalid, void, or unenforceable provisions with a valid and
                enforceable provision which achieves the purposes intended by
                the Parties to the greatest extent permitted by law.

29.     WAIVERS

        29.1    No failure or delay on the part of a Party in exercising any of
                its rights under this Agreement or in insisting upon strict
                performance of provisions of this Agreement, no partial exercise
                by either Party of any of its rights under this Agreement, and
                no course of dealing between the Parties shall constitute a
                waiver of the rights of either Party under this Agreement. Any
                waiver shall be effective only by a written instrument signed by
                the Party granting such waiver, and such shall not operate as a
                waiver of, or estoppel with respect to, any subsequent failure
                to comply therewith.

30.     AMENDMENTS

        30.1    The Parties shall negotiate in good faith to determine necessary
                amendments, if any, to this Agreement, provided that in
                negotiating such amendments the Parties shall attempt, in good
                faith, to reasonably preserve the bargain initially struck in
                this Agreement if any Governmental Authority, FERC, any state or
                the PUCN, implements a change in any Law or applicable
                regulation that materially affects or is reasonably expected to
                materially affect Buyer's PLR service under this Agreement.

        30.2    The Parties shall meet to discuss the impact of any changes in
                Buyer's OATT or the ISA's OATT, as applicable, or any rule or
                practice of NERC, WSCC, or any other Governmental Authority on
                the terms of this Agreement upon request by either Party during
                the term of this Agreement.

        30.3    In the event that it is deemed necessary to amend this
                Agreement, the Parties will attempt to agree upon such amendment
                and will submit such mutually agreed upon amendment(s) to the
                FERC for filing and acceptance.

        30.4    Amendments to this Agreement shall be in writing and shall be
                executed by an authorized representative of each Party.

31.     TIME IS OF THE ESSENCE

        31.1    Time is of the essence of this Agreement and in the performance
                of all of the covenants and conditions hereof.

                                       36


32.     APPROVALS

        32.1    Each Party's performance under this Agreement is subject to the
                condition that all requisite governmental and regulatory
                approvals for such performance are obtained in form and
                substance satisfactory to the other Party in its reasonable
                discretion. Each Party shall use best efforts to obtain all
                required approvals and shall exercise due diligence and shall
                act in good faith to cooperate and assist each other in
                acquiring any regulatory approval necessary to effectuate this
                Agreement. Further, the Parties agree to reasonably support the
                other Party in any associated regulatory proceedings, including
                by being a witness on behalf of the other Party.

        32.2    Notwithstanding the provisions of Section 2.2.2 of this
                Agreement, if any Governmental Authority in its review of the
                Agreement places conditions on or requires revisions of the
                Agreement that have no more than a de minimus effect on Supplier
                or Buyer, the Parties agree to execute an amendment to this
                Agreement reasonably acceptable to each Party incorporating such
                conditions or revisions.

        32.3    This Agreement is made subject to present or future state or
                federal laws, regulations, or orders properly issued by state or
                federal bodies having jurisdiction.

        32.4    The Parties hereto agree to execute and deliver promptly, at the
                expense of the Party requesting such action, any and all other
                and further instruments, documents and information which may
                reasonably be necessary or appropriate to give full force and
                effect to the terms and intent of this Agreement.

33.     PLR SERVICE

        33.1    The Agreement is premised on Buyer providing PLR service.
                Notwithstanding anything to the contrary contained herein, if
                Nevada retail electricity restructuring (including
                implementation of retail customer choice of electricity
                suppliers) is delayed beyond the Effective Date of this
                Agreement, the Parties shall continue to perform this Agreement
                in all respects pursuant to the terms and conditions hereof as
                if Buyer was the PLR and Buyer's retail and wholesale customers
                shall be considered as the TRR.

34.     CONFIDENTIALITY

        34.1    Confidential Information. Certain information provided by a
                ------------------------
                Party (the "Disclosing Party") to the other Party (the
                "Receiving Party") in connection with the negotiation or
                performance of this Agreement may be considered confidential
                and/or proprietary (hereinafter referred to as "Confidential
                Information") by the Disclosing Party. To be considered
                Confidential Information hereunder, such information must be
                clearly labeled or designated by the Disclosing Party as
                "confidential" or "proprietary" or with words of like meaning.
                If disclosed orally, such information shall be clearly
                identified as confidential and such status shall be

                                       37


                confirmed promptly thereafter in writing.

        34.2    Treatment of Confidential Information. The Receiving Party shall
                -------------------------------------
                treat any Confidential Information with at least the same degree
                of care regarding its secrecy and confidentiality as the
                Receiving Party's similar information is treated within the
                Receiving Party's organization. The Receiving Party shall not
                disclose the Confidential Information of the Disclosing Party to
                third parties (except as stated hereinafter) nor use it for any
                purpose other than the negotiation or performance of this
                Agreement, without the express prior written consent of the
                Disclosing Party. The Receiving Party further agrees that it
                shall restrict disclosure of Confidential Information as
                follows:

                34.2.1  Disclosure shall be restricted solely to its agents as
                        may be necessary to enforce the terms of this Agreement
                        after advising those agents of their obligations under
                        this Section 34.2.

                34.2.2  In the event that the Receiving Party is requested,
                        pursuant to or as required by applicable Law or by legal
                        process, to disclose any Confidential Information, the
                        Receiving Party shall provide the Disclosing Party with
                        prompt notice of such request or requirement in order to
                        enable Disclosing Party to seek an appropriate
                        protective order or other remedy and to consult with
                        Disclosing Party with respect to Disclosing Party taking
                        steps to resist or narrow the scope of such request or
                        legal process. The Receiving Party agrees not to oppose
                        any action by the Disclosing Party to obtain a
                        protective order or other appropriate remedy. In the
                        absence of such protective order, and provided that the
                        Receiving Party is advised by its counsel that it is
                        compelled to disclose the Confidential Information, the
                        Receiving Party shall:

                        (i)     furnish only that portion of the Confidential
                                Information which the Receiving Party is advised
                                by counsel is legally required; and

                        (ii)    use its commercially reasonable best efforts, at
                                the expense of the Disclosing Party, to ensure
                                that all Confidential Information so disclosed
                                will be accorded confidential treatment.

        34.3    Excluded Information. Confidential Information shall not be
                --------------------
                deemed to include the following:

                34.3.1  information which is or becomes generally available to
                        the public other than as a result of a disclosure by the
                        Receiving Party;

                34.3.2  information which was available to the Receiving Party
                        on a non-confidential basis prior to its disclosures by
                        the Disclosing Party; and

                34.3.3  information which becomes available to the Receiving
                        Party on a non-confidential basis from a person other
                        than the Disclosing Party or its

                                       38


                        representative who is not otherwise bound by a
                        confidentiality agreement with Disclosing Party or its
                        agent or is otherwise not under any obligation to
                        Disclosing party or its agent not to disclose the
                        information to the Receiving Party.

        34.4    Injunctive Relief Due to Breach. The Parties agree that remedies
                -------------------------------
                at law may be inadequate to protect each other in the event of a
                breach of this Section 34, and the Receiving Party hereby in
                advance agrees that the Disclosing Party shall be entitled to
                seek and obtain, without proof of actual damages, temporary,
                preliminary and permanent injunctive relief from any court or
                Governmental Authority of competent jurisdiction restraining the
                Receiving Party from committing or continuing any breach of this
                Section 34.

35.     CHOICE OF LAW

        35.1    This Agreement and the rights and obligations of the Parties
                shall be construed and governed by the Laws of: (i) the State of
                Nevada as if executed and performed wholly within that state;
                and (ii) the Federal Power Act, to the extent the rights and
                obligations of the Parties are covered by such act.

IN WITNESS WHEREOF, the Parties hereto have caused this Transitional Power
Purchase Agreement for the Clark Asset Bundle to be executed by their duly
authorized representative on the date set forth below.

NEVADA POWER COMPANY                            CLARK POWER LLC



- --------------------------                      --------------------------
By:     William E. Peterson                     By:    Edward P. Hermann
Title:  Senior Vice President,                  Title: Vice President
General Counsel, and Corporate Secretary
Date:   November 16, 2000                       Date:  November 16, 2000

                                       39


                                   EXHIBIT A
                                 CLARK BUNDLE
                ASSET BUNDLE CAPACITY AND OPERATING PARAMETERS



                   NET SUMMER    NET WINTER                 MINIMUM HOURLY
                   CAPABILITY    CAPABILITY    RAMP RATE      ENERGY TAKE
      UNIT           (MW)          (MW)         (MW/hr)          (MWh)
- -----------------------------------------------------------------------------
                                                
     Unit 1           42             42            42

     Unit 2           66             69            69

     Unit 3           67             70            70

     Unit 4           50             59            59

     Unit 5           73             81            81

     Unit 6           73             81            81

     Unit 7           73             81            81

     Unit 8           73             81            81

     Unit 9           85             88            88

    Unit 10           85             88            88
- -----------------------------------------------------------------------------
Total                687            740           740             n/a
=============================================================================


Minimum Annual Energy Take:                             2,700,000 Mwh
Limit on Excused Energy:*                 Annual:          40,000 MWh
                               +   Winter Months:           2,500 MWh per month

*The 40,000 MWh Limit on Excused Energy is an annual amount, to be prorated in
any Contract Year that is less than a twelve month period, that can be called on
in any month(s). The additional Limit on Excused Energy for Winter months is in
excess of the annual amount for the particular month and is not carried forward
if not otherwise used during the month. For example, in the month of April,
Supplier will have a Limit on Excused Energy of 2,500 MWh plus the unused amount
of the 40,000 MWh annual Limit on Excused Energy.

For purposes of this Exhibit A, the summer months shall consist of the months of
June through September. The winter months shall consist of the months of January
through May and the months of October through December.

                                      A-1


                                   EXHIBIT B
                                 CLARK BUNDLE
                      ENERGY AND ANCILLARY SERVICE PRICES


       Energy Prices*
       -------------

                 Price Floor of Energy:       $22.77 per MWh
                 Price Ceiling of Energy:     $42.65 per MWh


       Ancillary Service Prices*
       ------------------------

            Regulation and Frequency Response:
                 Summer On-Peak:              $25.75 per MW-reserved per hour
                 Summer Off-Peak:             $14.71 per MW-reserved per hour
                 Winter On-Peak:              $13.59 per MW-reserved per hour
                 Winter Off-Peak:             $ 7.77 per MW-reserved per hour


            Operating Reserve- Spinning Reserve:
                 Summer On-Peak:              $23.45 per MW-reserved per hour
                 Summer Off-Peak:             $13.40 per MW-reserved per hour
                 Winter On-Peak:              $12.52 per MW-reserved per hour
                 Winter Off-Peak:             $ 7.16 per MW-reserved per hour



            Operating Reserve- Supplemental Reserve:
                 Summer On-Peak:              $ 8.82 per MW-reserved per hour
                 Summer Off-Peak:             $ 5.04 per MW-reserved per hour
                 Winter On-Peak:              $ 4.26 per MW-reserved per hour
                 Winter Off-Peak:             $ 2.44 per MW-reserved per hour

        For purposes of this Exhibit B, the summer months shall consist of the
        months of June through September. The winter months shall consist of the
        months of January through May and the months of October through
        December.

        The On-Peak periods shall consist of Hour Ending (HE) 0700 through HE
        2200 PPT, Monday through Saturday. The Off-Peak periods shall consist of
        HE 0100 through HE 0600, HE 2300 and HE 2400 PPT, Monday through
        Saturday; HE 0100 through HE 2400 PPT Sunday and additional Off-Peak
        days (holidays) as designated annually by the WSCC.

        * SUBJECT TO FERC APPROVAL
          ------------------------

                                      B-1


                                   EXHIBIT C
                                 CLARK BUNDLE
                          SUPPLIER'S MONTHLY INVOICE

      A       Price Ceiling of Energy                   $  42.65  /MWh
      B       Price Floor of Energy                     $  22.77  /MWh


MONTH 1 - ENERGY
- ----------------



                      C                  D                E                 F                    G                     H
  Dispatch       Asset Bundle        Delivered        Supplier        Market Price        Market Price x        Market Price x
    Hour        Capacity (MWh)     Energy (MWh)    Shortfall (MWh)  of Energy ($/MWh)    Delivered Energy     Asset Bundle Capacity
    ----        --------------     ------------    ---------------  -----------------    ----------------     ---------------------
                                                       (C - D)                                (D x F)            (C x F)
                                                                                             

      1              687                687               0               40.00             $ 27,480.00            $ 27,480.00

      2              687                687               0               40.00               27,480.00              27,480.00

      3              687                627              60               40.00               25,080.00              27,480.00

      4              687                627              60               40.00               25,080.00              27,480.00

      5              557                547              10               30.00               16,410.00              16,710.00

      6              587                587               0               30.00               17,610.00              17,610.00

      7              677                657              20               20.00               13,140.00              13,540.00

      8              687                687               0               20.00               13,740.00              13,740.00

      9              687                687               0               20.00               13,740.00              13,740.00

     10              687                687               0               25.00               17,175.00              17,175.00
- ------------------------------------------------------------------------------------------------------------------------------------
                    6,630              6,480             150                                $196,935.00            $202,435.00

I.  Sum of (Delivered Energy times corresponding hourly Market Price)   Sec 7.2.1           $196,935.00
       IT.     Sum of (Asset Bundle Capacity times corresponding hourly Market Price)                              $202,435.00

J. Sum of hourly Delivered Energy multiplied by the Price Ceiling of Energy  Sec 7.2.2      $276,372.00
        JT.     Sum of hourly Asset Bundle Capacity multiplied by the Price
                 Ceiling of Energy                                                                                 $282,769.50

K.  Sum of hourly Delivered Energy multiplied by the Price Floor of Energy   Sec 7.2.3      $147,549.60
       KT.     Sum of hourly Asset Bundle Capacity multiplied by the Price Floor of Energy                         $150,965.10

L. Invoiced Amount - Energy            Sec 7.3                               (K ** I ** J)  $196,935.00

M. Theoretical Amount for Expected Performance                              (KT ** IT ** JT)                       $202,435.00


MONTH 1 - ANCILLARY SERVICE CAPACITY - REGULATION AND FREQUENCY RESPONSE
- ------------------------------------------------------------------------

                    N                      O                P                   Q                  R                    S
 Dispatch   Schedule of Ancillary  Ancillary Capacity    Supplier       Capacity Price of   Price x Ancillary    Price x Schedule
  Hour        Capacity (MW)         Supplied (MW)      Shortfall (MW)    Services ($/MW)    Capacity Supplied  of Ancillary Services
  ----        -------------         -------------      --------------    ---------------    -----------------  ---------------------
                                                          (N - O)                                (O x Q)               (N x Q)
                                                                                             
    1               0                    0                  0                 14.71                 $0.00                $0.00

    2               0                    0                  0                 14.71                 0.00                  0.00

    3               0                    0                  0                 25.75                 0.00                  0.00

    4               0                    0                  0                 25.75                 0.00                  0.00

    5               30                  30                  0                 25.75                772.50                772.50

    6               0                    0                  0                 25.75                 0.00                  0.00

    7               0                    0                  0                 25.75                 0.00                  0.00

    8               0                    0                  0                 25.75                 0.00                  0.00

    9               0                    0                  0                 25.75                 0.00                  0.00
- ------------------------------------------------------------------------------------------------------------------------------------


** Less Than




                                      C-1



                                   EXHIBIT C
                                 CLARK BUNDLE
                          SUPPLIER'S MONTHLY INVOICE


                                                                                                     
   10               0                    0                  0                 25.75                   0.00                0.00
- ------------------------------------------------------------------------------------------------------------------------------------
                   30                   30                  0                                      $772.50             $772.50


T.  Invoiced Amount - Ancillary Service Capacity - Regulation and Frequency Response  Sec 7.2.5    $772.50

U.  Theoretical Amount for Expected Performance                                                                        $772.50


MONTH 1 - ANCILLARY SERVICE CAPACITY - SPINNING RESERVE
- -------------------------------------------------------

                     V                    W                 X                Y                    Z                    AA
 Dispatch  Schedule of Ancillary  Ancillary Capacity    Supplier      Capacity Price of   Price x Ancillary      Price x Schedule
   Hour      Capacity (MW)          Supplied (MW)      Shortfall (MW)  Services ($/MW)    Capacity Supplied   of Ancillary Services
   ----      -------------          -------------      --------------  ---------------    -----------------  ----------------------
                                                          (V - W)                              (W x Y)               (V x Y)
                                                                                           
   1                0                    0                   0               13.40             $    0.00             $    0.00

   2                0                    0                   0               13.40                  0.00                  0.00

   3                0                    0                   0               23.45                  0.00                  0.00

   4                0                    0                   0               23.45                  0.00                  0.00

   5               80                   80                   0               23.45              1,876.00              1,876.00

   6               80                   60                  20               23.45              1,407.00              1,876.00

   7                0                    0                   0               23.45                  0.00                  0.00

   8                0                    0                   0               23.45                  0.00                  0.00

   9                0                    0                   0               23.45                  0.00                  0.00

  10                0                    0                   0               23.45                  0.00                  0.00
- ------------------------------------------------------------------------------------------------------------------------------------
                  160                  140                  20                                 $3,283.00             $3,752.00

AB.    Invoiced Amount - Ancillary Service Capacity - Spinning Reserve Sec 7.2.5               $3,283.00

AC.    Theoretical Amount for Expected Performance                                                                   $3,752.00


MONTH 1 - ANCILLARY SERVICE CAPACITY - SUPPLEMENTAL RESERVE
- -----------------------------------------------------------

                  AD                     AE                AF                AG                 AH                   AI
Dispatch  Schedule of Ancillary   Ancillary Capacity    Supplier      Capacity Price of  Price x Ancillary     Price x Schedule
 Hour       Capacity (MW)           Supplied (MW)      Shortfall (MW)   Services ($/MW)   Capacity Supplied   of Ancillary Services
 ----       -------------           -------------      --------------   ---------------   -----------------   ---------------------
                                                          (AD - AE)                           (AE x AG)             (AD x AG)
                                                                                            
   1               0                      0                  0                 5.04              $  0.00              $  0.00

   2               0                      0                  0                 5.04                 0.00                 0.00

   3               0                      0                  0                 8.82                 0.00                 0.00

   4               0                      0                  0                 8.82                 0.00                 0.00

   5              10                     10                  0                 8.82                88.20                88.20

   6              10                     10                  0                 8.82                88.20                88.20

   7              10                     10                  0                 8.82                88.20                88.20

   8               0                      0                  0                 8.82                 0.00                 0.00

   9               0                      0                  0                 8.82                 0.00                 0.00

  10               0                      0                  0                 8.82                 0.00                 0.00
- ------------------------------------------------------------------------------------------------------------------------------------
                  30                     30                  0                                   $264.60              $264.60

AJ.    Invoiced Amount - Ancillary Service Capacity - Supplemental Reserve    Sec 7.2.5          $264.60


                                      C-2


                                   EXHIBIT C
                                 CLARK BUNDLE
                          SUPPLIER'S MONTHLY INVOICE



                                                                                                                   
AK.    Theoretical Amount for Expected Performance                                                                    $264.60

MONTH 1 - ANCILLARY SERVICE ENERGY
- ----------------------------------


                    AL                   AM               AN                AO                  AP                   AQ
Dispatch    Schedule of Ancillary  Ancillary Energy     Supplier      Price Ceiling of    Price x Ancillary    Price x Schedule
  Hour           Energy (MWh)       Supplied (MWh)    Shortfall (MWh)   Energy ($/MWh)     Energy Supplied    of Ancillary Energy
  ----           -----------        --------------    ---------------   --------------     ---------------    -------------------
                                                         (AL - AM)                            (AM x AO)            (AL x AO)
                                                                                            
    1                 0                   0                  0               42.65             $      0.00           $    0.00

    2                 0                   0                  0               42.65                    0.00                0.00

    3                 0                   0                  0               42.65                    0.00                0.00

    4                 0                   0                  0               42.65                    0.00                0.00

    5                40                  40                  0               42.65                1,706.00            1,706.00

    6                30                  10                 20               42.65                  426.50            1,279.50

    7                10                  10                  0               42.65                  426.50              426.50

    8                 0                   0                  0               42.65                    0.00                0.00

    9                 0                   0                  0               42.65                    0.00                0.00

   10                 0                   0                  0               42.65                    0.00                0.00
- ------------------------------------------------------------------------------------------------------------------------------------
                     80                  60                 20             $426.50             $  2,559.00           $3,412.00

AR.    Invoiced Amount - Ancillary Services Energy     Sec 7.2.6                               $  2,559.00

AS.    Theoretical Amount for Expected Performance                                                                   $3,412.00

MONTH 1 - TOTAL INVOICE AMOUNT                     Sec 7.3   (L + T + AB + AJ + AR)            $203,814.10
====================================================================================================================================


MONTH 2 - ENERGY
- ----------------

                      C                  D                E                 F                  G                  H
  Dispatch       Asset Bundle        Delivered        Supplier        Market Price        Market Price x      Market Price x
    Hour        Capacity (MWh)     Energy (MWh)    Shortfall (MWh)  of Energy ($/MWh)    Delivered Energy   Asset Bundle Cap.
    ----        --------------     ------------    ---------------  -----------------    ----------------   -----------------
                                                       (C - D)                                (D x F)            (C x F)
                                                                                          
      1               687                687              0               45.00             $ 30,915.00        $ 30,915.00

      2               687                687              0               45.00               30,915.00          30,915.00

      3               687                627             60               45.00               28,215.00          30,915.00

      4               687                627             60               55.00               34,485.00          37,785.00

      5               557                547             10               55.00               30,085.00          30,635.00

      6               587                587              0               55.00               32,285.00          32,285.00

      7               677                657             20               35.00               22,995.00          23,695.00

      8               687                687              0               35.00               24,045.00          24,045.00

      9               687                687              0               35.00               24,045.00          24,045.00

     10               687                687              0               40.00               27,480.00          27,480.00
- ------------------------------------------------------------------------------------------------------------------------------------
                    6,630              6,480            150                                 $285,465.00        $292,715.00


I.  Sum of (Delivered Energy times corresponding hourly Market Price)   Sec 7.2.1           $285,465.00
       IT.   Sum of (Asset Bundle Capacity times corresponding hourly Market Price)                            $292,715.00

J.  Sum of hourly Delivered Energy multiplied by the Price Ceiling of Energy    Sec 7.2.2   $276,372.00
        JT.  Sum of hourly Asset Bundle Capacity multiplied by the Price Ceiling of Energy                     $282,769.50


                                      C-3


                                   EXHIBIT C
                                 CLARK BUNDLE
                          SUPPLIER'S MONTHLY INVOICE



                                                                                                            
K.  Sum of hourly Delivered Energy multiplied by the Price Floor of Energy   Sec 7.2.3        $147,549.60
       KT.   Sum of hourly Asset Bundle Capacity multiplied by the Price Floor of Energy                          $150,965.10

L. Invoiced Amount - Energy                     Sec 7.3                       (I *** J)       $276,372.00

M. Theoretical Amount for Expected Performance                               (IT *** JT)                          $282,769.50


MONTH 3 - ENERGY
- ----------------



                      C                 D                E                 F                       G                  H
  Dispatch       Asset Bundle       Delivered        Supplier        Market Price           Market Price x      Market Price x
    Hour        Capacity (MWh)     Energy (MWh)    Shortfall (MWh)  of Energy ($/MWh)      Delivered Energy   Asset Bundle Cap.
    ----        --------------     ------------    ---------------  -----------------      ----------------   -----------------
                                                       (C - D)                                  (D x F)            (C x F)
                                                                                            
      1               687                687              0               30.00              $ 20,610.00        $ 20,610.00

      2               687                687              0               20.00                13,740.00          13,740.00

      3               687                627             60               20.00                12,540.00          13,740.00

      4               687                627             60               20.00                12,540.00          13,740.00

      5               557                547             10               15.00                 8,205.00           8,355.00

      6               587                587              0               15.00                 8,805.00           8,805.00

      7               677                657             20               15.00                 9,855.00          10,155.00

      8               687                687              0               15.00                10,305.00          10,305.00

      9               687                687              0               15.00                10,305.00          10,305.00

     10               687                687              0               15.00                10,305.00          10,305.00
- ------------------------------------------------------------------------------------------------------------------------------------
                    6,630              6,480            150                                  $117,210.00        $120,060.00

I.     Sum of (Delivered Energy times corresponding hourly Market Price)  Sec 7.2.1          $117,210.00
          IT.   Sum of (Asset Bundle Capacity times corresponding hourly Market Price)                          $120,060.00

J.     Sum of hourly Delivered Energy multiplied by the Price Ceiling of Energy   Sec 7.2.2  $276,372.00
           JT.  Sum of hourly Asset Bundle Capacity multiplied by the Price Ceiling of Energy                   $282,769.50

K.     Sum of hourly Delivered Energy multiplied by the Price Floor of Energy   Sec 7.2.3    $147,549.60
          KT.   Sum of hourly Asset Bundle Capacity multiplied by the Price Floor of Energy                     $150,965.10

L.    Invoiced Amount - Energy                     Sec 7.3                      (I ** K)     $147,549.60


M.    Theoretical Amount for Expected Performance                              (IT ** KT)                       $150,965.10


For the purposes of this example, the portions of the monthly invoices
attributable to Ancillary Services for the second and third months were assumed
to be the same as the corresponding portions for the first month.

**  Less Than
*** Greater Than

                                      C-4


                                   EXHIBIT D

                                 CLARK BUNDLE

                  BUYER'S MONTHLY INVOICE - REPLACEMENT COSTS



MONTH 1 - ENERGY
- ----------------



                              A                   B *                  C *                  D

      Dispatch           Replacement       Replacement Cost      Replacement Cost   Gross Replacement
        Hour            Energy (MWh)       of Energy ($/MWh)        of Energy         Cost of Energy
        ----            ------------       -----------------        ---------         --------------
                                                                        
                                                                                       (A x B) + C

         1                    0                       na            $  0.00           $      0.00

         2                    0                       na               0.00                  0.00

         3                   60                    35.00             100.00              2,200.00

         4                   60                    30.00              50.00              1,850.00

         5                   10                    30.00              50.00                350.00

         6                    0                       na               0.00                  0.00

         7                   20                    25.00               0.00                500.00

         8                    0                       na               0.00                  0.00

         9                    0                       na               0.00                  0.00

         10                   0                       na               0.00                  0.00
- --------------------------------------------------------------------------------------------------
                             150                                                      $  4,900.00

E.     Gross Replacement Cost of Energy                                               $  4,900.00

F.     Theoretical Supplier's Invoice Amount for Expected Performance                 $202,435.00

G.     Actual Supplier's Invoice Amount                                                196,935.00
                                                                                      ------------
H.     Avoided Payment to Supplier                               (F - G)              $  5,500.00

I.     Invoiced Replacement Cost - Energy                        (E ** H)             $      0.00


MONTH 1 - ANCILLARY SERVICE CAPACITY - REGULATION AND FREQUENCY RESPONSE
- ------------------------------------------------------------------------

                              J                   K *                  L *                  M

      Dispatch           Replacement       Replacement Cost      Replacement Cost   Gross Replacement
        Hour            Capacity (MW)     of Capacity ($/MW)       of Capacity       Cost of Capacity
        ----            -------------     ------------------       -----------       ----------------
                                                                        
                                                                                       (J x K) + L

         1                    0                   na                  $0.00             $  0.00

         2                    0                   na                   0.00                0.00

         3                    0                   na                   0.00                0.00

         4                    0                   na                   0.00                0.00

         5                    0                   na                   0.00                0.00

         6                    0                   na                   0.00                0.00

         7                    0                   na                   0.00                0.00

         8                    0                   na                   0.00                0.00

         9                    0                   na                   0.00                0.00

         10                   0                   na                   0.00                0.00
- ------------------------------------------------------------------------------------------------
                              0                                                         $  0.00

N.     Gross Replacement Cost of Ancillary Capacity - Regulation and Frequency          $  0.00
       Response

O.     Theoretical Supplier's Invoice Amount for Expected Performance                   $772.50

P.     Actual Supplier's Invoice Amount                                                  772.50
                                                                                        --------
Q.     Avoided Payment to Supplier                                   (O - P)            $  0.00

R.     Invoiced Replacement Cost - Ancillary Capacity                (N = Q)            $  0.00


** Less Than

                                      D-1







                                   EXHIBIT D

                                 CLARK BUNDLE

                  BUYER'S MONTHLY INVOICE - REPLACEMENT COSTS


MONTH 1 - ANCILLARY SERVICE CAPACITY - SPINNING RESERVE
- -------------------------------------------------------



                              S                   T *                  U *                  V

      Dispatch           Replacement       Replacement Cost      Replacement Cost   Gross Replacement
        Hour            Capacity (MW)     of Capacity ($/MW)       of Capacity       Cost of Capacity
        ----            -------------     ------------------       -----------       ----------------
                                                                         
                                                                                       (S x T) + U

         1                    0                       na             $  0.00            $    0.00

         2                    0                       na                0.00                 0.00

         3                    0                       na                0.00                 0.00

         4                    0                       na                0.00                 0.00

         5                    0                       na                0.00                 0.00

         6                   20                    40.00              100.00               900.00

         7                    0                       na                0.00                 0.00

         8                    0                       na                0.00                 0.00

         9                    0                       na                0.00                 0.00

         10                   0                       na                0.00                 0.00
- --------------------------------------------------------------------------------------------------
                             20                                                         $  900.00

W.     Gross Replacement Cost of Ancillary Capacity - Spinning Reserve                  $  900.00

X.     Theoretical Supplier's Invoice Amount for Expected Performance                   $3,752.00

Y.     Actual Supplier's Invoice Amount                                                  3,283.00
                                                                                        ----------
Z.     Avoided Payment to Supplier                                   (X - Y)            $  469.00

AA.    Invoiced Replacement Cost - Ancillary Capacity                (W GREATER THAN Z) $  431.00


MONTH 1 - ANCILLARY CAPACITY - SUPPLEMENTAL RESERVE
- ---------------------------------------------------

                             AB                  AC *                  AD *                 AE

      Dispatch           Replacement       Replacement Cost      Replacement Cost   Gross Replacement
        Hour            Capacity (MW)     of Capacity ($/MW)       of Capacity       Cost of Capacity
        ----            -------------     ------------------       -----------       ----------------
                                                                        
                                                                                      (AB x AC) + AD


         1                    0                    na                 $0.00              $  0.00

         2                    0                    na                  0.00                 0.00

         3                    0                    na                  0.00                 0.00

         4                    0                    na                  0.00                 0.00

         5                    0                    na                  0.00                 0.00

         6                    0                    na                  0.00                 0.00

         7                    0                    na                  0.00                 0.00

         8                    0                    na                  0.00                 0.00

         9                    0                    na                  0.00                 0.00

         10                   0                    na                  0.00                 0.00
- --------------------------------------------------------------------------------------------------
                              0                                                          $  0.00

AF.     Gross Replacement Cost of Ancillary Capacity - Supplemental Reserve              $  0.00

AG.     Theoretical Supplier's Invoice Amount for Expected Performance                   $264.60

AH.     Actual Supplier's Invoice Amount                                                  264.60

AI.     Avoided Payment to Supplier                                 (AG - AH)            $  0.00

AJ.     Invoiced Replacement Cost - Ancillary Capacity              (AF = AI)            $  0.00


                                      D-2


                                   EXHIBIT D

                                 CLARK BUNDLE

                  BUYER'S MONTHLY INVOICE - REPLACEMENT COSTS


MONTH 1 - ANCILLARY SERVICE ENERGY
- ----------------------------------



                             AK                  AL *                  AM *                 AN

      Dispatch           Replacement       Replacement Cost      Replacement Cost   Gross Replacement
        Hour            Energy (MWh)       of Energy ($/MWh)       of Energy **       Cost of Energy
        ----            ------------       -----------------       ------------       --------------
                                                                        
                                                                                      (AK x AL) + AM

         1                    0                      na              $ 0.00                    0.00

         2                    0                      na                0.00                    0.00

         3                    0                      na                0.00                    0.00

         4                    0                      na                0.00                    0.00

         5                    0                      na                0.00                    0.00

         6                   20                   50.00               20.00                1,020.00

         7                    0                      na                0.00                    0.00

         8                    0                      na                0.00                    0.00

         9                    0                      na                0.00                    0.00

         10                   0                      na                0.00                    0.00
- ----------------------------------------------------------------------------------------------------
                             20                                                           $1,020.00

AO.     Gross Replacement Cost of Ancillary Energy                                        $1,020.00

AP.     Theoretical Supplier's Invoice Amount for Expected Performance                    $3,412.00

AQ.     Actual Supplier's Invoice Amount                                                   2,559.00
                                                                                          ----------
AR.     Avoided Payment to Supplier                                 (AP - AQ)             $  853.00

AS.     Invoiced Replacement Cost - Ancillary Energy                (AO ** AR)            $  167.00

MONTH 1 - TOTAL INVOICE AMOUNT                    (I + R + AA + AJ + AS)                  $  598.00
====================================================================================================


MONTH 2 - ENERGY
- ----------------

                              A                   B *                  C *                  D

      Dispatch           Replacement       Replacement Cost      Replacement Cost   Gross Replacement
        Hour            Energy (MWh)       of Energy ($/MWh)        of Energy         Cost of Energy
        ----            ------------       -----------------        ---------         --------------
                                                                        
                                                                                       (A x B) + C

         1                    0                      na             $  0.00                  0.00

         2                    0                      na                0.00                  0.00

         3                   60                   40.00              200.00              2,600.00

         4                   60                   55.00              100.00              3,400.00

         5                   10                   48.00              200.00                680.00

         6                    0                      na                0.00                  0.00

         7                   20                   35.00              300.00              1,000.00

         8                    0                      na                0.00                  0.00

         9                    0                      na                0.00                  0.00

         10                   0                      na                0.00                  0.00
- --------------------------------------------------------------------------------------------------
                             150                                                      $  7,680.00

E.     Gross Replacement Cost of Energy                                               $  7,680.00

F.     Theoretical Supplier's Invoice Amount for Expected Performance                 $282,769.50

G.     Actual Supplier's Invoice Amount                                                276,372.00
                                                                                      ------------


** Less Than

                                      D-3


                                   EXHIBIT D

                                 CLARK BUNDLE

                  BUYER'S MONTHLY INVOICE - REPLACEMENT COSTS




                                                                                    
H.     Avoided Payment to Supplier                                   (F - G)              $6,397.50

I.      Invoiced Replacement Cost - Energy                           (E ** H)             $1,282.50


MONTH 3 - ENERGY
- ----------------



                              A                   B *                  C *                  D

      Dispatch           Replacement       Replacement Cost      Replacement Cost   Gross Replacement
        Hour            Energy (MWh)       of Energy ($/MWh)        of Energy         Cost of Energy
        ----            ------------       -----------------        ---------         --------------
                                                                        
                                                                                       (A x B) + C

         1                    0                      na              $  0.00                  0.00

         2                    0                      na                 0.00                  0.00

         3                   60                   27.00               100.00              1,720.00

         4                   60                   22.00                50.00              1,370.00

         5                   10                   22.00                 0.00                220.00

         6                    0                      na                 0.00                  0.00

         7                   20                   22.00                50.00                490.00

         8                    0                      na                 0.00                  0.00

         9                    0                      na                 0.00                  0.00

         10                   0                      na                 0.00                  0.00
- ---------------------------------------------------------------------------------------------------
                             150                                                       $  3,800.00



E.     Gross Replacement Cost of Energy                                                $  3,800.00

F.     Theoretical Supplier's Invoice Amount for Expected Performance                  $150,965.10

G.     Actual Supplier's Invoice Amount                                                 147,549.60
                                                                                       ------------
H.     Avoided Payment to Supplier                              (F - G)                $  3,415.50

I.     Invoiced Replacement Cost - Energy                       (E *** H)              $    384.50


For the purposes of this example, the portions of the monthly invoices
attributable to Ancillary Services for the second and third months were assumed
to be the same as the corresponding portions for the first month.

**  Less Than
*** Greater Than

                                      D-4


                                   EXHIBIT E
                                 CLARK BUNDLE
                           YEAR END TRUE-UP INVOICE



       A        Price Ceiling of Energy                           $42.65  /MWh

       B        Price Floor of Energy                             $22.77  /MWh



EXAMPLE 1
- ---------



                       C                 D                    E                   F                       G

                   Delivered       Market Price x      Price Ceiling x      Price Floor x        Supplier's Invoiced
     Month       Energy (MWh)     Delivered Energy    Delivered Energy     Delivered Energy         Amount - Energy
     -----       ------------     ----------------    ----------------     ----------------         ---------------
                                                           (A x C)             (B x C)
                                                                                  
       1             6,480         $  196,935.00        $  276,372.00      $  147,549.60            $  196,935.00
       2             6,480            285,465.00           276,372.00         147,549.60               276,372.00
       3             6,480            117,210.00           276,372.00         147,549.60               147,549.60
       4             6,870            329,760.00           293,005.50         156,429.90               293,005.50
       5             6,870            302,280.00           293,005.50         156,429.90               293,005.50
       6             6,670            293,480.00           284,475.50         151,875.90               284,475.50
       7             6,870            316,020.00           293,005.50         156,429.90               293,005.50
       8             6,870            322,890.00           293,005.50         156,429.90               293,005.50
       9             6,330            303,840.00           269,974.50         144,134.10               269,974.50
      10             6,870            309,150.00           293,005.50         156,429.90               293,005.50
      11             6,870            370,980.00           293,005.50         156,429.90               293,005.50
      12             6,570            321,930.00           280,210.50         149,598.90               280,210.50
- ------------------------------------------------------------------------------------------------------------------
     Total          80,230         $3,469,940.00        $3,421,809.50      $1,826,837.10            $3,213,550.10


(Total of Column D) GREATER THAN  (Total of Column E) therefore Annual True-up calculated under Section 7.5.1(a)
- ----------------------------------------------------------------------------------------------------------------

H.    Annual True-up - Delivered Energy                                  (Total E - Total G)          $208,259.40

I.    Average Cost of Delivered Energy after True-up ($/MWh)             (Total E / Total C)               $42.65


                       J                 K                    L                   M                         N

                  Replacement    Replacement Energy   Gross Replacement  Adjusted Replacement      Invoiced Replacement
     Month       Energy (MWh)      x Average Cost      Cost of Energy       Cost of Energy            Cost of Energy
     -----       ------------      --------------      --------------       --------------            --------------
                                       (I x J)
                                                                                    
       1              150                                $ 4,900.00                                     $    0.00

       2              150                                  7,680.00                                      1,282.50

       3              150                                  3,800.00                                        384.50

       4                0                                      0.00                                          0.00

       5                0                                      0.00                                          0.00

       6                0                                      0.00                                          0.00

       7                0                                      0.00                                          0.00

       8                0                                      0.00                                          0.00

       9                0                                      0.00                                          0.00

      10                0                                      0.00                                          0.00

      11                0                                      0.00                                          0.00

      12                0                                      0.00                                          0.00
- ------------------------------------------------------------------------------------------------------------------
     Total            450            $19,192.50          $16,380.00               $0.00               $  1,667.00

O.    Annual True-up - Replacement Costs                                 (Total N - Total M)          $  1,667.00


                                      E-1


                                   EXHIBIT E
                                 CLARK BUNDLE
                           YEAR END TRUE-UP INVOICE



Total Annual True-up *                                                         (H + O)            $209,926.40
===================================================================================================================

EXAMPLE 2
- ---------
                       C                 D                    E                   F                    G

                   Delivered       Market Price x      Price Ceiling x      Price Floor x     Supplier's Invoiced
     Month       Energy (MWh)     Delivered Energy    Delivered Energy     Delivered Energy     Amount - Energy
     -----       ------------     ----------------    ----------------     ----------------     ---------------
                                                           (A x C)             (B x C)
                                                                               
       1             6,480        $  196,935.00       $  276,372.00        $  147,549.60        $  196,935.00

       2             6,480           285,465.00          276,372.00           147,549.60           276,372.00

       3             6,480           117,210.00          276,372.00           147,549.60           147,549.60

       4             6,870           261,060.00          293,005.50           156,429.90           261,060.00

       5             6,870           254,190.00          293,005.50           156,429.90           254,190.00

       6             6,670           226,780.00          284,475.50           151,875.90           226,780.00

       7             6,870           329,760.00          293,005.50           156,429.90           293,005.50

       8             6,870           233,580.00          293,005.50           156,429.90           233,580.00

       9             6,330           240,540.00          269,974.50           144,134.10           240,540.00

      10             6,870           240,450.00          293,005.50           156,429.90           240,450.00

      11             6,870           302,280.00          293,005.50           156,429.90           293,005.50

      12             6,570           256,230.00          280,210.50           149,598.90           256,230.00
- --------------------------------------------------------------------------------------------------------------
     Total          80,230        $2,944,480.00       $3,421,809.50        $1,826,837.10        $2,919,697.60

(Total of Column E) GREATER THAN (Total of Column D) therefore Annual True-up calculated under Section 7.5.1(b)
- --------------------------------------------------------------------------------------------------------------

H.    Annual True-up - Delivered Energy                                  (Total D - Total G)    $   24,782.40

I.    Average Cost of Delivered Energy after True-up ($/MWh)             (Total D / Total C)    $       36.70


                       J                 K                    L                   M                    N

                  Replacement    Replacement Energy   Gross Replacement  Adjusted Replacement      Invoiced Replacement
     Month       Energy (MWh)      x Average Cost      Cost of Energy       Cost of Energy            Cost of Energy
     -----       ------------      --------------      --------------       --------------            --------------
                                      (I x J)
                                                                                    
       1              150                                $ 4,900.00                                    $     0.00

       2              150                                  7,680.00                                      1,282.50

       3              150                                  3,800.00                                        384.50

       4                0                                      0.00                                          0.00

       5                0                                      0.00                                          0.00

       6                0                                      0.00                                          0.00

       7                0                                      0.00                                          0.00

       8                0                                      0.00                                          0.00

       9                0                                      0.00                                          0.00

      10                0                                      0.00                                          0.00

      11                0                                      0.00                                          0.00

      12                0                                      0.00                                          0.00
- ------------------------------------------------------------------------------------------------------------------
     Total            450            $16,515.22          $16,380.00             $0.00                  $ 1,667.00


O.    Annual True-up - Replacement Costs                                 (Total N - Total M)           $ 1,667.00


Total Annual True-up *                                                         (H + O)                 $26,449.40
===================================================================================================================


                                      E-2


                                   EXHIBIT E

                                 CLARK BUNDLE

                           YEAR END TRUE-UP INVOICE



EXAMPLE 3
- ---------
                       C                 D                    E                   F                    G
                   Delivered       Market Price x      Price Ceiling x      Price Floor x        Supplier's Invoiced
     Month       Energy (MWh)     Delivered Energy    Delivered Energy     Delivered Energy        Amount - Energy
     -----       ------------     ----------------    ----------------     ---------------         ---------------
                                                           (A x C)             (B x C)
                                                                                  
       1             6,480         $  196,935.00        $  276,372.00        $  147,549.60          $  196,935.00
       2             6,480            285,465.00           276,372.00           147,549.60             276,372.00
       3             6,480            117,210.00           276,372.00           147,549.60             147,549.60
       4             6,870            219,840.00           293,005.50           156,429.90             219,840.00
       5             6,870            206,100.00           293,005.50           156,429.90             206,100.00
       6             6,670            186,760.00           284,475.50           151,875.90             186,760.00
       7             6,870            178,620.00           293,005.50           156,429.90             178,620.00
       8             6,870            185,490.00           293,005.50           156,429.90             185,490.00
       9             6,330            158,250.00           269,974.50           144,134.10             158,250.00
      10             6,870            171,750.00           293,005.50           156,429.90             171,750.00
      11             6,870            144,270.00           293,005.50           156,429.90             156,429.90
      12             6,570            144,540.00           280,210.50           149,598.90             149,598.90
- -----------------------------------------------------------------------------------------------------------------
     Total          80,230         $2,195,230.00        $3,421,809.50        $1,826,837.10          $2,233,695.40

(Total of Column E) > (Total of Column D) therefore Annual True-up calculated under Section 7.5.1(b)
- ----------------------------------------------------------------------------------------------------

H.    Annual True-up - Delivered Energy                                  (Total D - Total G)        $  (38,465.40)

I.    Average Cost of Delivered Energy after True-up ($/MWh)             (Total D / Total C)        $       27.36




                       J                 K                    L                   M                         N
                  Replacement    Replacement Energy   Gross Replacement  Adjusted Replacement      Invoiced Replacement
     Month       Energy (MWh)      x Average Cost      Cost of Energy       Cost of Energy            Cost of Energy
     -----       ------------      --------------      --------------       --------------            --------------
                                      (I x J)
                                                                                    
       1              150                              $  4,900.00                                   $       0.00
       2              150                                 7,680.00                                       1,282.50
       3              150                                 3,800.00                                         384.50
       4                0                                     0.00                                           0.00
       5                0                                     0.00                                           0.00
       6                0                                     0.00                                           0.00
       7                0                                     0.00                                           0.00
       8                0                                     0.00                                           0.00
       9                0                                     0.00                                           0.00
      10                0                                     0.00                                           0.00
      11                0                                     0.00                                           0.00
      12                0                                     0.00                                           0.00
- ------------------------------------------------------------------------------------------------------------------
     Total            450           $ 12,312.77        $ 16,380.00                 $ 4,067.23        $   1,667.00


O.    Annual True-up - Replacement Costs                                 (Total N - Total M)         $  (2,400.23)


                                      E-3


                                   EXHIBIT E

                                 CLARK BUNDLE

                           YEAR END TRUE-UP INVOICE

Total Annual True-up *                             (H + O)       $   (40,865.63)
================================================================================

EXAMPLE 4
- ---------



                       C                 D                    E                   F                    G
                   Delivered       Market Price x      Price Ceiling x      Price Floor x     Supplier's Invoiced
     Month        Energy (MWh)    Delivered Energy    Delivered Energy     Delivered Energy     Amount - Energy
     -----        ------------    ----------------    ----------------     ----------------     ---------------
                                                           (A x C)             (B x C)
                                                                               
       1             6,480         $   196,935.00      $   276,372.00       $   147,549.60      $   196,935.00
       2             6,480             285,465.00          276,372.00           147,549.60          276,372.00
       3             6,480             117,210.00          276,372.00           147,549.60          147,549.60
       4             6,870             151,140.00          293,005.50           156,429.90          156,429.90
       5             6,870             116,790.00          293,005.50           156,429.90          156,429.90
       6             6,670             153,410.00          284,475.50           151,875.90          153,410.00
       7             6,870             158,010.00          293,005.50           156,429.90          158,010.00
       8             6,870              96,180.00          293,005.50           156,429.90          156,429.90
       9             6,330             113,940.00          269,974.50           144,134.10          144,134.10
      10             6,870             130,530.00          293,005.50           156,429.90          156,429.90
      11             6,870              82,440.00          293,005.50           156,429.90          156,429.90
      12             6,570             124,830.00          280,210.50           149,598.90          149,598.90
- ---------------------------------------------------------------------------------------------------------------
     Total          80,230         $ 1,726,880.00      $ 3,421,809.50       $ 1,826,837.10      $ 2,008,159.10

(Total of Column E) > (Total of Column D) therefore Annual True-up calculated under Section 7.5.1(b)
- ----------------------------------------------------------------------------------------------------

H.    Annual True-up - Delivered Energy                                  (Total F - Total G)    $  (181,322.00)

I.    Average Cost of Delivered Energy after True-up ($/MWh)             (Total F / Total C)    $        22.77




                       J                 K                    L                    M                      N
                  Replacement    Replacement Energy   Gross Replacement   Adjusted Replacement   Invoiced Replacement
     Month        Energy (MWh)      x Average Cost      Cost of Energy       Cost of Energy          Cost of Energy
     -----        ------------      --------------      --------------       --------------          --------------
                                        (I x J)
                                                                                  
       1              150                              $  4,900.00                                  $        0.00
       2              150                                 7,680.00                                       1,282.50
       3              150                                 3,800.00                                         384.50
       4                0                                     0.00                                           0.00
       5                0                                     0.00                                           0.00
       6                0                                     0.00                                           0.00
       7                0                                     0.00                                           0.00
       8                0                                     0.00                                           0.00
       9                0                                     0.00                                           0.00
      10                0                                     0.00                                           0.00
      11                0                                     0.00                                           0.00
      12                0                                     0.00                                           0.00
- -------------------------------------------------------------------------------------------------------------------
     Total            450           $ 10,246.50        $ 16,380.00                 $ 6,133.50       $    1,667.00

O.    Annual True-up - Replacement Costs                                 (Total N - Total M)        $   (4,466.50)
===================================================================================================================


                                      E-4


                                   EXHIBIT E

                                 CLARK BUNDLE

                           YEAR END TRUE-UP INVOICE


Total Annual True-up *                      (H + O)           $    (185,788.50)
================================================================================


* Positive Total Annual True-up is indicative of a payment form Buyer to
Supplier; Negative Total Annual True-up is indicative of a payment form Supplier
to Buyer.

                                      E-5


                                   EXHIBIT F
                   NOTICES, BILLING AND PAYMENT INSTRUCTIONS


Supplier:
- --------

a)  Agreement Notices:          Name and Address:______________________
    ------------------          Phone:_________________________________
                                Fax:___________________________________

b)  Payment Check:              Name and Address:______________________
    --------------

c)  Payment Wire Transfer:      Bank:__________________________________
    ----------------------      ABA#:__________________________________
                                For: Supplier's Name __________________
                                Account No: ___________________________
                                For:___________________________________

d)  Invoices:                   Name and Address:______________________
    ---------                   Phone:_________________________________
                                Fax:___________________________________

e)  Operating Notifications:
    ------------------------
    i)   (Management, if required)

    ii)  Pre-Schedule:          Phone:_________________________________
                                Fax:___________________________________

    iii) Real Time:             Phone:_________________________________
                                Fax:___________________________________

    iv)  Monthly Checkout       Phone:_________________________________
         Person:                Fax:___________________________________

                                      F-1


Buyer:

a) Agreement Notices:
   -----------------
        Address:  Gary Craythorn
                  Manager, Resource Contracts
                  Nevada Power Company
                  6226 West Sahara Avenue, M/S 26A
                  Las Vegas, Nevada 89146
        Phone:    702/367-5425
        Fax:      702/227-2455
        E-mail:   gcraythorn@nevp.com


                                         
b) Invoices:
   --------
    US Post Office: (Via Certified Mail)    Overnight Delivery
    --------------                          ------------------
    Address:   Nevada Power Company         Address:   Nevada Power Company
               Attn: Kathy Crews                       Attn: Kathy Crews
               P.O. Box 230, M/S 20                    6226 West Sahara Ave., M/S 20
               Las Vegas, Nevada 89151                 Las Vegas, Nevada 89146
    Telephone: 702/227-2476
    Fax: 702/367-5096
    E-mail: kcrews@nevp.com

c) Schedules:
    i) Pre-Schedule:        Primary Name:   Rick Engebretson     Phone: 702/862-7195
                                                                 E-mail: rengebretson@nevp.com
                        Alternate Name:     Tim Schuster         Phone: 702/862-7194
                                                                 E-mail: tschuster@nevp.com
                                                                 Fax: 702/227-2404
   ii) Real Time:                                                Phone: 702/862-7106
                                                                 Fax: 702/227-2404
  iii) Monthly Checkout:                 Kathy Crews             Phone:702/227-2476
                                                                 Fax:702/367-5096
                                                                 E-mail:kcrews@nevp.com
d) Control Area/Transmission:
    i) Reliability Dispatch:       Phone: (702) 451-2026
                                   Fax: (702) 862-7113
   ii) Transmission Dispatch:      Phone: (702) 451-8346
                                   Fax: (702) 862-7113


                                      F-2


                                    EXHIBIT G

                          FORM OF AVAILABILITY NOTICE*

Date of Notice:

Time of Notice:

Supplier:

Name of Supplier's Representative:

Buyer:

Asset Bundle:

Availability Dates (96 hours total):



                          A                   B                C             D                E              F             G
Availability  Hour   Available from   Total Derating of    Permitted    Asset Bundle    Available    Total Derating  Permitted
  Date       Ending   Valmy   Unit     Valmy Unit (MW)    Derating       Capacity of    from Valmy   of    Valmy     Derating of
  ----       ------           ----     --------------     Unit 1 (MW)    Unit 1 (MW)     Unit 2 (MW)   Unit 2 (MW)     Unit 2 (MW)
                      1 (MW)                              -----------    -----------     ----------    -----------     -----------
                      -----

                                                                                            
                     (A ** or = ____) (___ - A)         (C) ** or = B)    (A - C)    (E ** or = ___) (___ - E)      (B ** or = F)

              0600

              0700

              0800

              0900

              1000

              1100

              1200

              1300

              1400

              1500

              1600

              1700

              1800

              1900

              2000

              2100

              2200

              2300

              2400

              0100

              0200

              0300

              0400

              0500

              0600

              0700

               :

         (96 hours total)

               :

              300

              400

              500



                             H              I**                     J

                         Asset bundle    Alternative    Cause and Expected Duration of
Availability  Hour         Capacity of     Point(s) of    Deratings and Identification
   Date      Ending       Unit 2 (MW)       Delivery       Permitted Deratings
   ----      ------        ----------       -------        -------------------
                                            
                             (G - E)

              0600

              0700

              0800

              0900

              1000

              1100

              1200

              1300

              1400

              1500

              1600

              1700

              1800

              1900

              2000

              2100

              2200

              2300

              2400

              0100

              0200

              0300

              0400

              0500

              0600

              0700

               :

         (96 hours total)

               :

              300

              400

              500

*   The Parties' operational personnel shall develop a similar form for the
    other generating units in the bundle.

**  The Parties' operational personnel shall develop the necessary procedure
    to document requests and responses to utilize Alternative Point(s) of
    Delivery.

                                      G-1


                                   EXHIBIT H

                               FORM OF GUARANTEE

     This Guarantee is entered into as of November 16, 2000 by NRG Energy, Inc.,
a Delaware corporation, and Dynegy Holdings Inc., a Delaware corporation (each,
a "Guarantor"), on behalf of Clark Gardner Power LLC, a Delaware limited
liability company ("Supplier"), in favor of and for the benefit of Nevada Power
Company, a Nevada corporation ("NPC"). NPC is sometimes referred to herein as
"Beneficiary".

     WHEREAS, Supplier and NPC are entering into a Transitional Power Purchase
Agreement dated as of November 16, 2000 (the "TPPA") by which Supplier has
agreed to sell and NPC has agreed to buy Energy and Ancillary Services (as
defined in the TPPA) produced by the Clark generating station being sold by NPC;
and

     WHEREAS, it is a condition to the obligation of NPC to enter into the TPPA
for Guarantor to guarantee the Supplier's obligations under the TPPA in an
amount not to exceed the Credit Amount (as defined in the TPPA) (the "Guarantied
Obligations").

     1.  Guarantee. Each Guarantor jointly and severally, and irrevocably and
unconditionally, guaranties, as primary obligor and not merely as surety, the
due and punctual payment in full of all Guarantied Obligations (including
amounts that would become due but for the operation of the automatic stay under
Section 362(a) of the Bankruptcy Code, 11 U.S.C. (S) 362(a)).

     In the event that all or any portion of the Guarantied Obligations is paid
by Supplier, the obligations of Guarantor hereunder shall continue and remain in
full force and effect or be reinstated, as the case may be, in the event that
all or any part of such payment(s) is rescinded or recovered directly or
indirectly from the Beneficiary as a preference, fraudulent transfer or
otherwise, and any such payments that are so rescinded or recovered shall
constitute Guarantied Obligations (to the extent such payments, in the
aggregate, do not exceed the Credit Amount).

     Subject to the other provisions of this Section 1, upon failure of Supplier
to pay any of the Guarantied Obligations when and as the same shall become due,
the Guarantors will upon demand pay, or cause to be paid, in cash, to NPC, an
amount equal to the aggregate of the unpaid Guarantied Obligations to the extent
due. In the event the Guarantors fail to pay the Guarantied Obligations, each
and every default in the payment shall give rise to a separate cause of action
and separate causes of action may be brought hereunder as each such cause of
action arises. In no event shall the amount recoverable hereunder by Beneficiary
from the Guarantors, singly or jointly, ever exceed the Credit Amount (as
defined in the TPPA).

     2.  Expenses. Each Guarantor agrees to reimburse NPC for all reasonable
costs and expenses (including, without limitation, the reasonable fees and
expenses of legal counsel) in connection with (i) any default by such Guarantor
hereunder and any enforcement or collection proceeding resulting therefrom,
including, without limitation, all manner of participation in or other
involvement with bankruptcy, insolvency, receivership, foreclosure, winding up
or liquidation proceedings of or involving the Guarantor, judicial or regulatory
proceedings of or

                                      H-3


involving the Guarantor and workout, restructuring or other negotiations or
proceedings of or involving the Guarantor (whether or not the workout,
restructuring or transaction contemplated thereby is consummated) and (ii) the
enforcement of this Section 2.

     3.  Guarantee Absolute; Continuing Guarantee. The obligations of each
Guarantor hereunder are joint and several, irrevocable, absolute, independent
and unconditional, and shall not be affected by any circumstance which
constitutes a legal or equitable discharge of a guarantor or surety other than
payment in full of the Guarantied Obligations. In furtherance of the foregoing
and without limiting the generality thereof, the Guarantors agree that: (a) this
Guarantee is a guarantee of payment when due and not of collectibility; (b) the
obligations of each Guarantor hereunder are independent of the obligations of
Supplier under the TPPA and a separate action or actions may be brought and
prosecuted against either Guarantor whether or not any action is brought against
the Supplier and whether or not the Supplier is joined in any such action or
actions; and (c) either Guarantor's payment of a portion, but not all, of the
Guarantied Obligations shall in no way limit, affect, modify or abridge the
Guarantors' liability for any portion of the Guarantied Obligations that has not
been paid. This Guarantee is a continuing guarantee and shall be binding upon
the Guarantors and its successors and assigns.

     4.  Actions by Beneficiary. The Beneficiary may from time to time, without
notice or demand and without affecting the validity or enforceability of this
Guarantee or giving rise to any limitation, impairment or discharge of the
Guarantors' liability hereunder, (a) renew, extend, accelerate or otherwise
change the time, place, manner or terms of payment of the Guarantied
Obligations, (b) settle, compromise, release or discharge, or accept or refuse
any offer of performance with respect to, or substitutions for, the Guarantied
Obligations or any agreement relating thereto and/or subordinate the payment of
the same to the payment of any other obligations, (c) request and accept other
guaranties of the Guarantied Obligations and take and hold security for the
payment of this Guarantee or the Guarantied Obligations, (d) release, exchange,
compromise, subordinate or modify, with or without consideration, any security
for payment of the Guarantied Obligations, any other guaranties of the
Guarantied Obligations, or any other obligation of any Person with respect to
the Guarantied Obligations, (e) enforce and apply any security hereafter held by
or for the benefit of the Beneficiary in respect of this Guarantee or the
Guarantied Obligations and direct the order or manner of sale thereof, or
exercise any other right or remedy that the Beneficiary may have against any
such security, and (f) exercise any other rights available to NPC under the
TPPA.

     5.  No Discharge. This Guarantee and the obligations of each Guarantor
hereunder shall be valid and enforceable and shall not be subject to any
limitation, impairment or discharge for any reason (other than payment in full
of the Guarantied Obligations), including without limitation the occurrence of
any of the following, whether or not Guarantor shall have had notice or
knowledge of any of them: (a) any failure to assert or enforce or agreement not
to assert or enforce, or the stay or enjoining, by order of court, by operation
of law or otherwise, of the exercise or enforcement of, any claim or demand or
any right, power or remedy with respect to the Guarantied Obligations or any
agreement relating thereto, or with respect to any other guarantee of or
security for the payment of the Guarantied Obligations, (b) any waiver or

                                      H-4


modification of, or any consent to departure from, any of the terms or
provisions of any other guarantee or security for the Guarantied Obligations,
(c) the Guarantied Obligations, or any agreement relating thereto, at any time
being found to be illegal, invalid or unenforceable in any respect, (d) the
application of payments received from any source to the payment of indebtedness
other than the Guarantied Obligations, even if the Beneficiary might have
elected to apply such payment to any part or all of the Guarantied Obligations,
(e) any failure to perfect or continue perfection of a security interest in any
collateral which secures any of the Guarantied Obligations, (f) any defenses,
set-offs or counterclaims which the Supplier may assert against the Beneficiary
in respect of the Guarantied Obligations, including but not limited to failure
of consideration, breach of warranty, payment, statute of frauds, statute of
limitations, accord and satisfaction (other than the right to set off or recoup
overdue undisputed payments due from Beneficiary under the TPPA), and (g) any
other act or thing or omission, or delay to do any other act or thing, which may
or might in any manner or to any extent vary the risk of either Guarantor as an
obligor in respect of the Guarantied Obligations.

     6.  Waivers for the Benefit of Beneficiary. Each Guarantor waives, for the
benefit of Beneficiary, until the Guarantied Obligations are paid in full: (a)
any right to require the Beneficiary, as a condition of payment or performance
by the Guarantors, to (i) proceed against the Supplier, any other guarantor of
the Guarantied Obligations or any other Person, (ii) proceed against or exhaust
any security held from the Supplier, any other guarantor of the Guarantied
Obligations or any other Person, or (iii) pursue any other remedy in the power
of the Beneficiary; (b) any defense arising by reason of the incapacity, lack of
authority or any disability or other defense of the Supplier including, without
limitation, any defense based on or arising out of the lack of validity or the
unenforceability of the Guarantied Obligations or any agreement or instrument
relating thereto or by reason of the cessation of the liability of the Supplier
from any cause other than payment in full of the Guarantied Obligations; (c) any
defense based upon any statute or rule of law which provides that the obligation
of a surety must be neither larger in amount nor in other respects more
burdensome than that of the principal; (d) (i) any principles or provisions of
law, statutory or otherwise, that are or might be in conflict with the terms of
this Guarantee and any legal or equitable discharge of Guarantors' obligations
hereunder, (ii) the benefit of any statute of limitations affecting Guarantors'
liability hereunder or the enforcement hereof, (iii) any rights to set-offs,
recoupments and counterclaims, and (iv) promptness, diligence and any
requirement that the Beneficiary protect, secure, perfect or insure any lien on
any property subject thereto; (e) notices, demands, presentments, protests,
notices of protest, notices of dishonor and notices of any action or inaction,
including acceptance of this Guarantee; and (f) to the fullest extent permitted
by law, any defenses or benefits that may be derived from or afforded by law
which limit the liability of or exonerate guarantors or sureties, or which may
conflict with the terms of this Guarantee.

     7.  Waiver of Rights Against Supplier. Until the Guarantied Obligations are
paid in full, each Guarantor waives any claim, right or remedy, direct or
indirect, that such Guarantor now has or may hereafter have against the Supplier
or any of its assets in connection with this Guarantee or the performance by
such Guarantor of its obligations hereunder, in each case whether such claim,
right or remedy arises in equity, under contract, by statute, under common law
or otherwise and including without limitation (a) any right of subrogation,
reimbursement or

                                      H-5


indemnification that such Guarantor now has or may hereafter have against the
Supplier, (b) any right to enforce, or to participate in, any claim, right or
remedy that the Beneficiary now has or may hereafter have against the Supplier,
and (c) any benefit of, and any right to participate in, any collateral or
security hereafter held by the Beneficiary. Each Guarantor further agrees that,
to the extent the waiver or agreement to withhold the exercise of its rights of
subrogation, reimbursement and indemnification as set forth herein is found by a
court of competent jurisdiction to be void or voidable for any reason, any
rights of subrogation, reimbursement or indemnification such Guarantor may have
against the Supplier or against any collateral or security shall be junior and
subordinate to any rights the Beneficiary may have against Supplier, to all
right, title and interest the Beneficiary may have in any such collateral or
security, and to any right the Beneficiary may have against such other
guarantor.

     8.  Representations and Warranties of Guarantor. Each Guarantor represents
and warrants to NPC as follows:

     (a) it is a corporation duly organized, validly existing and in good
standing under the laws of its state of incorporation. Such Guarantor has the
requisite corporate power and authority to own, lease and operate its properties
and to carry on its business as now being conducted.

     (b) it has the corporate power and authority to execute and deliver this
Guarantee and to consummate the transactions contemplated hereby. The execution
and delivery of this Guarantee and the consummation of the transactions
contemplated hereby have been duly and validly authorized by the Board of
Directors of such Guarantor, and no other corporate proceedings on the part of
such Guarantor, including the approval of its shareholders, are necessary to
authorize this Guarantee or to consummate the transactions so contemplated. This
Guarantee has been duly and validly executed and delivered by such Guarantor and
constitutes a valid and binding agreement of such Guarantor, enforceable against
such Guarantor in accordance with its terms.

     (c) There are no legal or arbitral proceedings by or before any
governmental or regulatory authority or agency, now pending or (to such
Guarantor's knowledge) threatened against such Guarantor or its subsidiaries
that could reasonably be expected to have a material adverse effect on the
consolidated financial condition, operations or business taken as a whole of it
and its subsidiaries, except as set forth in periodic filings by such Guarantor
with the Securities and Exchange Commission.

     (d) The representations and warranties made herein will remain true until
such Guarantor has fulfilled its obligations to pay in full the Guaranteed
Obligations.

     9.  Set Off. In addition to any other rights the Beneficiary may have under
law or in equity, if any amount shall at any time be due and owing by either
Guarantor to the Beneficiary under this Guarantee, the Beneficiary is authorized
at any time or from time to time, without notice (any such notice being
expressly waived), to set off and to appropriate and to apply any indebtedness
of the Beneficiary owing to such Guarantor and any other property of such

                                      H-6


Guarantor held by the Beneficiary to or for the credit or the account of such
Guarantor against and on account of the Guarantied Obligations and liabilities
of such Guarantor to the Beneficiary under this Guarantee.

     10. Disputes. Any action, claim or dispute arising out of or relating to
this Guarantee (any such action, claim or dispute, a "Dispute") shall be
submitted in writing to the other Party. In the event the Guarantors and NPC are
unable to resolve the Dispute satisfactorily within thirty (30) days from the
receipt of notice of the Dispute, either the Guarantors or NPC may initiate
arbitration through the serving and filing of a demand for arbitration. The
Guarantors and NPC expressly agree that such arbitration shall be the exclusive
means to further resolve any Dispute and hereby irrevocably waive their right to
a jury trial with respect to any Dispute, provided that at any time a request
made for provisional remedies requesting preservation of respective rights and
obligations under the Guarantee may be resolved by a court of law located in the
County of the principal place of business of NPC. Arbitration shall be conducted
in accordance with Sections 13.4, 13.5, 13.6, 13.7, and 13.8 of the TPPA.

     11. Amendments and Waivers. No amendment, modification, termination or
waiver of any provision of this Guarantee, and no consent to any departure by
either Guarantor therefrom, shall in any event be effective without the written
concurrence of NPC and, in the case of any such amendment or modification,
either Guarantor. Any such waiver or consent shall be effective only in the
specific instance and for the specific purpose for which it was given.

     12. Miscellaneous. It is not necessary for Beneficiary to inquire into the
capacity or powers of either Guarantor or Supplier or the officers, directors or
any agents acting or purporting to act on behalf of any of them.

     The rights, powers and remedies given to Beneficiary by this Guarantee are
cumulative and shall be in addition to and independent of all rights, powers and
remedies given to Beneficiary by virtue of any statute or rule of law or in the
TPPA. Any forbearance or failure to exercise, and any delay by Beneficiary in
exercising, any right, power or remedy hereunder shall not impair any such
right, power or remedy or be construed to be a waiver thereof, nor shall it
preclude the further exercise of any such right, power or remedy.

     In case any provision in or obligation under this Guarantee shall be
invalid, illegal or unenforceable in any jurisdiction, the validity, legality
and enforceability of the remaining provisions or obligations, or of such
provision or obligation in any other jurisdiction, shall not in any way be
affected or impaired thereby.

     This Guarantee shall inure to the benefit of Beneficiary and its respective
successors and assigns.

     13. Notices. All notices, requests, demands, waivers, consents and other
communications hereunder shall be in writing, shall be delivered either in
person, by telegraphic, facsimile or other electronic means, by overnight air
courier or by mail, and shall be deemed to have been duly given and to have
become effective (a) upon receipt if delivered in person or by telegraphic,
facsimile or other electronic means, (b) one (1) business day after having been

                                      H-7


delivered to an air courier for overnight delivery or (c) three (3) business
days after having been deposited in the U.S. mails as certified or registered
mail, return receipt requested, all fees prepaid, directed to the parties at the
following addresses:

     If to Guarantors, addressed to:  David Lloyd, Esq.
                                      NRG Energy, Inc.
                                      Symphony Towers
                                      Suite 2740
                                      750 "B" Street
                                      San Diego, CA 92101-8129
                                      Facsimile: (619) 615-7663

                                      Alisa B. Johnson, Esq.
                                      Dynegy Holdings Inc.
                                      1000 Louisiana Street, Suite 5800
                                      Houston, TX 77002
                                      Facsimile:(713) 767-8508

             with copies to:          William H. Holmes, Esq.
                                      Stoel Rives LLP
                                      900 SW Fifth Avenue
                                      Suite 2300
                                      Portland, OR 97204-1268
                                      Facsimile: 503-220-2480

        If to NPC, addressed to:      William E. Peterson
                                      Nevada Power Company
                                      6100 Neil Road
                                      Reno, Nevada 89511
                                      Facsimile: (775) 834-5959

     IN WITNESS WHEREOF, Guarantor has caused this Guaranty to be duly executed
and delivered by its officers thereunto duly authorized as of the date first
written above.

NRG ENERGY, INC.                               DYNEGY HOLDINGS INC.

________________________________        __________________________________
By:    Craig A. Mataczynski             By:    __________________
Title: President                        Title: __________________
Address: 901 Marquette Ave., Suite 2300 Address: 1000 Louisiana St., Suite 5800
         Minneapolis, MN 55402                   Houston, TX 77002

                                      H-8


                                   EXHIBIT I
                           COMPANY OBSERVED HOLIDAYS


         New Year's Day                       January 1/st/
         Martin Luther King's Day             Third Monday in January
         President's Day                      Third Monday in February
         Memorial Day (observed)              Last Monday in May
         Independence Day                     July 4/th/
         Labor Day                            First Monday in September
         Veteran's Day                        November 11/th/
         Thanksgiving Day                     Fourth Thursday in November
         Thanksgiving Friday                  Friday after Thanksgiving
         Christmas Eve                        December 24/th/
         Christmas Day                        December 25/th/


Holidays falling on Saturday will be observed on the preceding Friday and those
falling on Sunday will be observed on the following Monday.

                                      I-1


                                   EXHIBIT J

                                 CLARK BUNDLE

                          ADJUSTMENTS TO TPPA AMOUNT



                              Monthly                                             Monthly
              Month          Adjustment                       Month              Adjustment
            ----------------------------                    ---------------------------------
                                                                        
                Mar-01              2.9%                        Mar-02                   2.3%
                Apr-01              3.3%                        Apr-02                   2.8%
                May-01              4.3%                        May-02                   3.6%
                Jun-01              5.1%                        Jun-02                   4.2%
                Jul-01             11.7%                        Jul-02                   9.5%
                Aug-01             11.5%                        Aug-02                   8.4%
                Sep-01              9.0%                        Sep-02                   6.6%
                Oct-01              3.2%                        Oct-02                   2.5%
                Nov-01              2.9%                        Nov-02                   2.1%
                Dec-01              3.3%                        Dec-02                   2.4%
                Jan-02              2.5%                        Jan-03                   2.2%
                Feb-02              2.1%                        Feb-03                   2.1%


    Example 1 - Effective Date of Agreement is April 15, 2001
    ---------------------------------------------------------

    A.    TPPA Amount:                              $15,000,000

                             B                    C                   D
                          Monthly             Applicable          Applicable
         Month          Adjustment            Portion *           Adjustment
    ------------------------------------------------------------------------
                                                                   (B x C)
              Apr-01              3.3%                    50.0%         1.7%
              May-01              4.3%                   100.0%         4.3%
    ------------------------------------------------------------------------
         Total                                                          6.0%


                                                                                    
    E.  Total of Monthly Applicable Adjustments                                                   6.0%
    F   Adjusted TPPA Amount                                      (A x (1+D))             $15,900,000
    =================================================================================================


    Example 2 - Effective Date of Agreement is September 15, 2001
    -------------------------------------------------------------

    G.    TPPA Amount:                              $15,000,000

                             H                    I                   J
                          Monthly             Applicable          Applicable
         Month          Adjustment            Portion *           Adjustment
    ------------------------------------------------------------------------

                                      J-1


                                   EXHIBIT J

                                 CLARK BUNDLE

                          ADJUSTMENTS TO TPPA AMOUNT


                                                                   (H x I)
                                                                                     
              Jun-01              5.1%                   100.0%           5.1%

              Jul-01             11.7%                   100.0%          11.7%

              Aug-01             11.5%                   100.0%          11.5%

              Sep-01              9.0%                    50.0%           4.5%
    -------------------------------------------------------------------------
         Total                                                           32.8%


    K.  Total of Monthly Applicable Adjustments                                                         32.8%

    L   Adjusted TPPA Amount                                     (G x (1-K))                     $10,080,000
    ========================================================================================================


    Example 3 - Termination Date of December 31, 2002
    -------------------------------------------------

    M.    TPPA Amount:                              $15,000,000



                             N                    O                   P
                          Monthly             Applicable          Applicable
         Month          Adjustment            Portion **          Adjustment
    ----------------------------------------------------------------------------
                                                                                        
                                                                  (N x O)
              Jan-03              2.2%                   100.0%           2.2%
              Feb-03              2.1%                   100.0%           2.1%
    ----------------------------------------------------------------------------
         Total                                                            4.3%

    Q.  Total of Monthly Applicable Adjustments                                                          4.3%
    R   Payment Amount                                             (M x Q)                          $645,000
    ========================================================================================================


    *   The applicable portion of the month is the number of days in the month
    during which deliveries of energy from Supplier to Buyer were made divided
    by the number of days in the month.

    **  The applicable portion of the month is the number of days in the month
    during which deliveries of energy from Supplier to Buyer would have been
    made divided by the number of days in the month.

                                      J-2


                                   EXHIBIT K
                                 CLARK BUNDLE
                      ADJUSTMENTS TO MINIMUM ANNUAL TAKE



        A                   B                  C                D                  E                F
                       Base Number        Base Energy       Sales per       Current Number   Adjusted Energy
     Class *           of Customers       Sales (MWh)     Customer (MWh)     of Customers      Sales (MWh)
- ----------------------------------------------------------------------------------------------------------------------
                                                             (C / B)                            (D x E) **
                                                                              
Residential                      475,000      5,800,000            12           470,000           5,738,947
Commercial                        65,000      2,800,000            43            60,000           2,584,615
Industrial                         1,000      4,900,000                             800           3,600,000
Street Lighting                        5        130,000                               5             130,000
Other Retail                          50        600,000                              50             600,000
Wholesale                              5        850,000                               5             850,000
- --------------------------------------------------------------------------------------------------------------------
                                 541,060     15,080,000                         530,860          13,503,563

G.  Adjustment to Minimum Annual Take                                      (F / C)                    89.55%
H.  Minimum Annual Take from Exhibit A (MWh)                                                         40,000
I.  Revised Minimum Annual Take (MWh)                                      (G x H)                   35,820


        J                   K
  Month During       Applicable Min.
  Contract Year     Annual Take (MWh)
- -----------------------------------------
                 
        1                        40,000
        2                        40,000
        3                        40,000
        4                        40,000
        5                        35,820
        6                        35,820
        7                        35,820
        8                        34,000
        9                        34,000
       10                        32,000
       11                        32,000
       12                        32,000
- -----------------------------------------
      Total                     431,460

L.  Minimum Take for Contract Year (MWh)                             (Total of K / 12)           35,955


*       As reported on Buyer's FERC Form 1
**      Adjusted Energy Sales for the remaining Industrial, Street Lighting,
        Other Retail, and Wholesale customers will be based upon actual sales
        during the base period.

                                      K-1


                                    EXHIBIT L
                                  CLARK BUNDLE
                    ENERGY APPLICABLE TO MINIMUM ANNUAL TAKE



    A              B                C                D               E *               F              G **
 Dispatch       Supply          Delivered        Permitted          Force         Replacement      Applicable
   Hour      Amount (MWh)     Energy (MWh)     Derating(MWh)     Majeure(MWh)     Energy(MWh)     Energy(MWh)
- ----------------------------------------------------------------------------------------------------------------
                                                                                                   (C+D+E+F)
                                                                                
         1           687             687                                                                687
         2           687             687                                                                687
         3           687             687                                                                687
         4           687             687                                                                687
         5           687             687                                                                687
         6           687             667                20                                              687
         7           687             667                20                                              687
         8           687             667                                                  20            687
         9           687             687                                                                687
        10           687             687                                                                687
        11           687             687                                                                687
        12           687             687                                                                687
        13           687               0                                687                             687
        14           687               0                                687                             687
        15           687               0                                687                             687
        16           687               0                                687                             687
        17           687             637                                                  30            667
        18           687             687                                                                687
        19           687             687                                                                687
        20           687             687                                                                687
        21           687             687                                                                687
        22           687             687                                                                687
        23           687             687                                                                687
        24           657             657                                                                657
        25           637             637                                                                637
        26           607             607                                                                607
        27           637             607                30                                              637
        28           657             657                                                                657
        29           687             687                                                                687
        30           687             687                                                                687
        31           687             687                                                                687
        32           687             687                                                                687
        33           687             687                                                                687
        34           687             687                                                                687
        35           687             687                                                                687
        36           687             687                                                                687
- ----------------------------------------------------------------------------------------------------------------


                                      K-2


                                    EXHIBIT L
                                  CLARK BUNDLE
                    ENERGY APPLICABLE TO MINIMUM ANNUAL TAKE


                                                                                   
     total        24,492          21,604                70            2,748               50         24,472


*       Includes energy excused because of Supplier's and Buyer's events of
        Force Majeure
**      G cannot be greater than B

                                      L-2