EXHIBIT 3.78

                       LIMITED LIABILITY COMPANY AGREEMENT
                                       OF
                         NRG MIDATLANTIC GENERATING LLC
                      A Delaware Limited Liability Company

         THIS LIMITED LIABILITY COMPANY AGREEMENT OF NRG MIDATLANTIC GENERATING
LLC (this "Agreement"), dated as of August 23, 2000 (the "Effective Date"), is
adopted, executed and agreed to, for good and valuable consideration, by the
Members (as defined below).

                                    RECITALS

         1.       The Company (as defined below) was formed for the purpose of
acquiring, operating and owning the Projects (as defined below).

         2.       NRG MidAtlantic LLC and MidAtlantic Generation Holding LLC
now desire to enter into this Agreement with respect to various matters relating
to the Company.

                                    ARTICLE 1

         1.01     Definitions. As used in this Agreement, the following terms
have the respective meanings set forth below or set forth in the Sections
referred to below:

                  AAA - Section 10.03(b).

                  ACE - Atlantic City Electric Company, a New Jersey
         corporation.

                  Acquisitions - the Company's acquisition of the Projects from
         the Sellers pursuant to the Asset Purchase Agreements.

                  Act - the Delaware Limited Liability Company Act.

                  Affected Member - Section 9.01.

                  Affiliate - with respect to any Person, (a) each entity that
         such Person Controls; (b) each Person that Controls such Person,
         including, in the case of a Member, such Member's Parent; and (c) each
         entity that is under common Control with such Person, including, in the
         case of a Member, each entity that is Controlled by such Member's
         Parent.

                  Agreement - introductory paragraph.

                  Alternate Representative - Section 6.02(a)(i).

                  Arbitration Notice - Section 10.02(c).

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                  Arbitrator - Section 10.03(a).

                  Asset Purchase Agreements - (i) that certain Purchase and Sale
         Agreement by and between Delmarva Power & Light Company and NRG dated
         as of January 18, 2000 in respect of the DP&L wholly-owned stations;
         (ii) that certain Purchase and Sale Agreement by and between Delmarva
         Power & Light Company and NRG dated as of January 18, 2000 in respect
         of the DP&L jointly-owned stations; (iii) that certain Purchase and
         Sale Agreement by and between Atlantic City Electric Company and NRG
         dated as of January 18, 2000 in respect of the ACE wholly-owned
         stations; and (iv) that certain Purchase and Sale Agreement by and
         between Atlantic City Electric Company and NRG dated as of January 18,
         2000 in respect of the ACE jointly-owned stations, and in each case all
         ancillary agreements and documents related thereto.

                  Assignee - any Person that acquires a Membership Interest or
         any portion thereof through a Disposition; provided, however, that, an
         Assignee shall have no right to be admitted to the Company as a Member
         except in accordance with Section 3.03(b)(iii).

                  Bankruptcy or Bankrupt - with respect to any Person, that (a)
         such Person (i) makes a general assignment for the benefit of
         creditors; (ii) files a voluntary bankruptcy petition; (iii) becomes
         the subject of an order for relief or is declared insolvent in any
         federal or state bankruptcy or insolvency proceedings; (iv) files a
         petition or answer seeking for such Person a reorganization,
         arrangement, composition, readjustment, liquidation, dissolution, or
         similar relief under any Law; (v) files an answer or other pleading
         admitting or failing to contest the material allegations of a petition
         filed against such Person in a proceeding of the type described in
         subclauses (i) through (iv) of this clause (a); or (vi) seeks, consents
         to, or acquiesces in the appointment of a trustee, receiver, or
         liquidator of such Person or of all or any substantial part of such
         Person's properties; or (b) against such Person, a proceeding seeking
         reorganization, arrangement, composition, readjustment, liquidation,
         dissolution, or similar relief under any Law has been commenced and 60
         Days have expired without dismissal thereof or with respect to which,
         without such Person's consent or acquiescence, a trustee, receiver, or
         liquidator of such Person or of all or any substantial part of such
         Person's properties has been appointed and 60 Days have expired without
         the appointment's having been vacated or stayed, or 60 Days have
         expired after the date of expiration of a stay, if the appointment has
         not previously been vacated.

                  B.L. England Power - B.L. England Power LLC, a Delaware
         limited liability company.

                  Business Day - any day other than a Saturday, a Sunday, or a
         holiday on which national banking associations in Minnesota or New York
         are not open for business.

                  Buyout Event - Section 9.01.

                  Capital Account - the account to be maintained by the Company
         for each Member in accordance with Section 4.06.

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                  Capital Contribution - with respect to any Member, the amount
         of money and the net agreed value of any property (other than money)
         contributed to the Company by the Member. Any reference in this
         Agreement to the Capital Contribution of a Member shall include a
         Capital Contribution of its predecessors in interest.

                  Certified Public Accountants - a firm of independent public
         accountants selected from time to time by the Management Committee.

                  Change of Member Control - with respect to any Member, an
         event (such as a Disposition of voting securities) that causes such
         Member to cease to be Controlled by such Member's Parent; provided,
         however, that an event that causes any of such Member's Parents to be
         Controlled by another Person shall not constitute a Change of Member
         Control.

                  Claim - any and all judgments, claims, causes of action,
         demands, lawsuits, suits, proceedings, Governmental investigations or
         audits, losses, assessments, fines, penalties, administrative orders,
         obligations, costs, expenses, liabilities and damages (whether actual,
         consequential or punitive), including interest, penalties, reasonable
         attorney's fees, disbursements and costs of investigations,
         deficiencies, levies, duties and imposts.

                  Code - the Internal Revenue Code of 1986, as amended.

                  Company - NRG MidAtlantic Generating LLC, a Delaware limited
         liability company.

                  Conemaugh Power - Conemaugh Power LLC, a Delaware limited
         liability company.

                  Control - the possession, directly or indirectly, through one
         or more intermediaries, of both of the following:

                           (a)      (i) in the case of a corporation, a majority
                  of the outstanding voting securities thereof; (ii) in the case
                  of a limited liability company, partnership, limited
                  partnership or venture, the right to more than 50% of the
                  distributions therefrom (including liquidating distributions);
                  (iii) in the case of a trust or estate, including a business
                  trust, a majority of the beneficial interest therein; and (iv)
                  in the case of any other entity, a majority of the economic or
                  beneficial interest therein; and

                           (b)      in the case of any entity, the power and
                  authority to control the management of the entity.

                  Confidential Information - information and data (including all
         copies thereof) that is furnished or submitted by any of the Members or
         their Affiliates, whether oral (and if oral, reduced to writing and
         marked "confidential" within 10 days of disclosure), written, or
         electronic, on a confidential basis to the other Members or their
         Affiliates in connection with the Company, and any and all of the
         activities and studies performed

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         pursuant to this Agreement or any Asset Purchase Agreement or Loan
         Document, and the resulting information and data obtained from those
         studies. Notwithstanding the foregoing, the term "Confidential
         Information" shall not include any information that:

                           (a)      is in the public domain at the time of its
                  disclosure or thereafter (other than as a result of a
                  disclosure directly or indirectly by a Member or its
                  Affiliates in contravention of this Agreement or any Project
                  Agreement);

                           (b)      as to any Member, was in the possession of
                  such Member or its Affiliates prior to the execution of this
                  Agreement; or

                           (c)      is engineering information (for example,
                  heat balance and capital cost information) that has been
                  independently acquired or developed by a Member or its
                  Affiliates without violating any of the obligations of such
                  Member or its Affiliates under this Agreement.

                  Control - the possession, directly or indirectly of either of
                  the following:

                           (a)      (i) in the case of a corporation, more than
                  50% of the outstanding voting securities thereof; (ii) in the
                  case of a limited liability company, partnership, limited
                  partnership or venture, the right to more than 50% of the
                  distributions therefrom (including liquidating distributions);
                  (iii) in the case of a trust or estate, including a business
                  trust, more than 50% of the beneficial interest therein; and
                  (iv) in the case of any other entity, more than 50% of the
                  economic or beneficial interest therein; or

                           (b)      in the case of any entity, the power or
                  authority, through ownership of voting securities, by contract
                  or otherwise, to exercise a controlling influence over the
                  management of the entity.

                  Day - a calendar day; provided, however, that if any period of
         Days referred to in this Agreement shall end on a Day that is not a
         Business Day, then the expiration of such period shall be automatically
         extended until the end of the first succeeding Business Day.

                  Deepwater Power - Deepwater Power LLC, a Delaware limited
         liability company.

                  Default - the failure of a Member to comply in any material
         respect with any of its material agreements, covenants or obligations
         under this Agreement; the failure of any representation or warranty
         made by a Member in this Agreement to have been true and correct in all
         material respects at the time it was made; or the failure of a Member,
         without justified cause, to take any action materially necessary for
         the progress of the Project consistent with or required by the terms of
         this Agreement (including participating in meetings or decisions).

                  Default Rate - a rate per annum equal to the lesser of (a) a
         varying rate per annum equal to the sum of (i) the prime rate as
         published in The Wall Street Journal, with

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         adjustments in that varying rate to be made on the same date as any
         change in that rate is so published, plus (ii) 3% per annum, and (b)
         the maximum rate permitted by Law.

                  Delaware Certificate - Section 2.01.

                  Dispose, Disposing or Disposition - with respect to any asset
         (including a Membership Interest or any portion thereof), a sale,
         assignment, transfer, conveyance, gift, exchange or other disposition
         of such asset, whether such disposition be voluntary, involuntary or by
         operation of Law, including the following: (a) in the case of an asset
         owned by a natural person, a transfer of such asset upon the death of
         its owner, whether by will, intestate succession or otherwise; (b) in
         the case of an asset owned by an entity, (i) a merger or consolidation
         of such entity (other than where such entity is the survivor thereof),
         (ii) a conversion of such entity into another type of entity, or (iii)
         a distribution of such asset, including in connection with the
         dissolution, liquidation, winding-up or termination of such entity
         (unless, in the case of dissolution, such entity's business is
         continued without the commencement of liquidation or winding-up); and
         (c) a disposition in connection with, or in lieu of, a foreclosure of
         an Encumbrance; but such terms shall not include the creation of an
         Encumbrance.

                  Dispute - Section 10.01.

                  Dispute Notice - Section 10.02.

                  Disputing Member - Section 10.01.

                  Dissolution Event - Section 11.01 (a).

                  DP&L - Delmarva Power & Light Company, a Delaware and Virginia
         corporation.

                  Effective Date - introductory paragraph.

                  Encumber, Encumbering, or Encumbrance - the creation of a
         security interest, lien, pledge, mortgage or other encumbrance, whether
         such encumbrance be voluntary, involuntary or by operation of Law;
         provided, however, that the pledge or assignment to any creditor of the
         Company, or any collateral agent for such creditor, of any Membership
         Interest as security for the indebtedness to such creditor shall not be
         deemed to be an Encumbrance thereof.

                  Fair Market Value - Section 9.03.

                  Governmental Authority (or Governmental) - a federal, state,
         local or foreign governmental authority; a state, province,
         commonwealth, territory or district thereof; a county or parish; a
         city, town, township, village or other municipality; a district, ward
         or other subdivision of any of the foregoing; any executive,
         legislative or other governing body of any of the foregoing; any
         agency, authority, board, department, system, service, office,
         commission, committee, council or other administrative body of any of
         the

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         foregoing; any court or other judicial body; and any officer, official
         or other representative of any of the foregoing.

                  including - including, without limitation.

                  Indian River Power - Indian River Power LLC, a Delaware
         limited liability company.

                  Keystone Power - Keystone Power LLC, a Delaware limited
         liability company.

                  Law - any applicable constitutional provision, statute, act,
         code (including the Code), law, regulation, rule, ordinance, order,
         decree, ruling, proclamation, resolution, judgment, decision,
         declaration, or interpretative or advisory opinion or letter of a
         Governmental Authority having valid jurisdiction.

                  Lending Member - Section 4.03(a)(ii).

                  Loan Documents - any and all documents relating to money
         borrowed by the Company including money borrowed through public or
         private sales of the Company's debt securities, as the same may be
         amended or restated from time to time.

                  Management Committee - Section 6.02.

                  Manager - Section 6.03.

                  Member - any Person executing this Agreement as of the date of
         this Agreement as a member or hereafter admitted to the Company as a
         member as provided in this Agreement, but such term does not include
         any Person who has ceased to be a member in the Company.

                  Membership Interest - with respect to any Member, (a) that
         Member's status as a Member; (b) that Member's share of the income,
         gain, loss, deduction and credits of, and the right to receive
         distributions from, the Company; (c) all other rights, benefits and
         privileges enjoyed by that Member (under the Act, this Agreement, or
         otherwise) in its capacity as a Member, including that Member's rights
         to vote, consent and approve and otherwise to participate in the
         management of the Company, including through the Management Committee;
         and (d) all obligations, duties and liabilities imposed on that Member
         (under the Act, this Agreement or otherwise) in its capacity as a
         Member, including any obligations to make Capital Contributions.

                  Non-Contributing Member - Section 4.03(a).

                  NRG - NRG Energy, Inc., a Delaware corporation.

                  Officer - any Person designated as an officer of the Company
         as provided in Section 6.02(j), but such term does not include any
         Person who has ceased to be an officer of the Company.

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                  Outside Activities - Section 6.05(b).

                  Owner Entities - B.L. England Power, Conemaugh Power,
         Deepwater Power, Indian River Power, Keystone Power and Vienna Power.

                  Parent - if applicable to a Member, the company or companies
         set forth opposite the name of such Member on Exhibit A.

                  Person - the meaning assigned that term in Section 18-101(11)
         of the Act and also includes a Governmental Authority and any other
         entity.

                  Power Marketing - NRG Power Marketing, Inc., a Delaware
         limited liability corporation.

                  Projects - the electricity generating plants and facilities
         and all related items of tangible and intangible property to be
         acquired by the Owner Entities pursuant to the Asset Purchase
         Agreements.

                  Representative - Section 6.02(a)(i).

                  Securities Act - the Securities Act of 1933.

                  Sharing Ratio - subject in each case to adjustments in
         accordance with this Agreement or in connection with Dispositions of
         Membership Interests, (a) in the case of a Member executing this
         Agreement as of the date of this Agreement or a Person acquiring such
         Member's Membership Interest, the percentage specified for that Member
         as its Sharing Ratio on Exhibit A, and (b) in the case of Membership
         Interest issued pursuant to Section 3.04, the Sharing Ratio established
         pursuant thereto; provided, however, that the total of all Sharing
         Ratios shall always equal 100%.

                  Sole Discretion - a Member's sole and absolute discretion,
         with or without cause, and subject to whatever limitations or
         qualifications the Member may impose.

                  Tax Matters Member - Section 7.03(a).

                  Term - Section 2.06.

                  Terminated Member - Section 9.05.

                  Treasury Regulations - the regulations (including temporary
         regulations) promulgated by the United States Department of the
         Treasury pursuant to and in respect of provisions of the Code. All
         references herein to sections of the Treasury Regulations shall include
         any corresponding provision or provisions of succeeding, similar or
         substitute, temporary or final Treasury Regulations.

                  Vienna Power - Vienna Power LLC, a Delaware limited liability
         company.

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Other terms defined herein have the meanings so given them.

         1.02     Construction. Unless the context requires otherwise: (a) the
gender (or lack of gender) of all words used in this Agreement includes the
masculine, feminine, and neuter; (b) references to Articles and Sections refer
to Articles and Sections of this Agreement; (c) references to Exhibits refer to
the Exhibits attached to this Agreement, each of which is made a part hereof for
all purposes; (d) references to Laws refer to such Laws as they may be amended
from time to time, and references to particular provisions of a Law include any
corresponding provisions of any succeeding Law; and (e) references to money
refer to legal currency of the United States of America.

                                    ARTICLE 2
                                  ORGANIZATION

         2.01     Formation. The Company has been organized as a Delaware
limited liability company by the filing of a Certificate of Formation (the
"Delaware Certificate"), dated as of May 8, 2000 (the "Formation Date"), with
the Secretary of State of Delaware pursuant to the Act.

         2.02     Name. The name of the Company is "NRG MidAtlantic Generating
LLC" and all Company business must be conducted in that name or such other names
that comply with Law as the Management Committee may select.

         2.03     Registered Office; Registered Agent; Principal Office in the
United States; Other Offices. The registered office of the Company required by
the Act to be maintained in the State of Delaware shall be the office of the
initial registered agent named in the Delaware Certificate or such other office
(which need not be a place of business of the Company) as the Management
Committee may designate in the manner provided by Law. The registered agent of
the Company in the State of Delaware shall be the initial registered agent named
in the Delaware Certificate or such other Person or Persons as the Management
Committee may designate in the manner provided by Law. The principal office of
the Company in the United States shall be at such place as the Management
Committee may designate, which need not be in the State of Delaware, and the
Company shall maintain records there or such other place as the Management
Committee shall designate and shall keep the street address of such principal
office at the registered office of the Company in the State of Delaware. The
Company may have such other offices as the Management Committee may designate.

         2.04     Purposes. The purposes of the Company are to own the Owner
Entities and to cause the Owner Entities to enter into, and perform their
respective obligations under, the Asset Purchase Agreements; and to engage in
any activities directly or indirectly relating thereto, including obtaining
financing for and contributing required capital to the Owner Entities for the
foregoing purposes.

         2.05     Foreign Qualification. Prior to the Company's conducting
business in any jurisdiction other than Delaware, the Management Committee shall
cause the Company to comply, to the extent procedures are available and those
matters are reasonably within the control

                                        8


of the Management Committee, with all requirements necessary to qualify the
Company as a foreign limited liability company in that jurisdiction. At the
request of the Management Committee, each Member shall execute, acknowledge,
swear to, and deliver all certificates and other instruments conforming with
this Agreement that are necessary or appropriate to qualify, continue, and
terminate the Company as a foreign limited liability company in all such
jurisdictions in which the Company may conduct business.

         2.06     Term. The period of existence of the Company (the "Term")
commenced on the Formation Date and shall end at such time as a certificate of
cancellation is filed with the Secretary of State of Delaware in accordance with
Section 11.04.

         2.07     No State-Law Partnership. The Members intend that the Company
not be a partnership (including a limited partnership) or joint venture, and
that no Member be a partner or joint venturer of any other Member, for any
purposes other than federal and state tax purposes, and this Agreement may not
be construed to suggest otherwise.

         2.08     UNITS; CERTIFICATES OF MEMBERSHIP INTEREST; APPLICABILITY OF
ARTICLE 8 OF UCC. Membership Interests shall be represented by units ("Units").
The number of authorized Units shall be one thousand (1,000). All Membership
Interests shall be represented by certificates in such form as the Management
Committee shall from time to time approve, shall be recorded in a register
thereof maintained by the Company, and shall be subject to such rules for the
issuance thereof as the Management Committee may from time to time determine.
Membership Interests shall be subject to the provisions of Article 8 of the
Uniform Commercial Code as may be applicable from time to time.

                                    ARTICLE 3
                     MEMBERSHIP; DISPOSITIONS OF INTERESTS

         3.01     Initial Members. The initial Members of the Company are the
Persons executing this Agreement as of the date of this Agreement as Members,
each of which is admitted to the Company as a Member effective contemporaneously
with the execution by such Person of this Agreement.

         3.02     Representations, Warranties and Covenants. Each Member hereby
represents, warrants and covenants to the Company and each other Member that the
following statements are true and correct as of the Effective Date and shall be
true and correct at all times that such Member is a Member:

                  (a)      that Member is duly incorporated, organized or formed
         (as applicable), validly existing, and (if applicable) in good standing
         under the Law of the jurisdiction of its incorporation, organization or
         formation; if required by applicable Law, that Member is duly qualified
         and in good standing in the jurisdiction of its principal place of
         business, if different from its jurisdiction of incorporation,
         organization or formation; and that Member has full power and authority
         to execute and deliver this Agreement and to perform its obligations
         hereunder, and all necessary actions by the board of directors,

                                        9


         shareholders, managers, members, partners, trustees, beneficiaries, or
         other applicable Persons necessary for the due authorization,
         execution, delivery, and performance of this Agreement by that Member
         have been duly taken;

                  (b)      that Member has duly executed and delivered this
         Agreement and the other documents contemplated herein, and they
         constitute the legal, valid and binding obligation of that Member
         enforceable against it in accordance with their terms (except as may be
         limited by bankruptcy, insolvency or similar Laws of general
         application and by the effect of general principles of equity,
         regardless of whether considered at law or in equity); and

                  (c)      that Member's authorization, execution, delivery, and
         performance of this Agreement does not and will not (i) conflict with,
         or result in a breach, default or violation of, (A) the organizational
         documents of such Member, (B) any contract or agreement to which that
         Member is a party or is otherwise subject, or (C) any Law, order,
         judgment, decree, writ, injunction or arbitral award to which that
         Member is subject; or (ii) require any consent, approval or
         authorization from, filing or registration with, or notice to, any
         Governmental Authority or other Person, unless such requirement has
         already been satisfied.

         3.03      Dispositions and Encumbrances of Membership Interests.

                  (a)      General Restriction. A Member may not Dispose of or
         Encumber all or any portion of its Membership Interest except in strict
         accordance with this Section 3.03. (References in this Section 3.03 to
         Dispositions or Encumbrances of a "Membership Interest" shall also
         refer to Dispositions or Encumbrances of a portion of a Membership
         Interest.) Any attempted Disposition or Encumbrance of a Membership
         Interest, other than in strict accordance with this Section 3.03, shall
         be, and is hereby declared, null and void ab initio. The Members agree
         that a breach of the provisions of this Section 3.03 may cause
         irreparable injury to the Company and to the other Members for which
         monetary damages (or other remedy at law) are inadequate in view of (i)
         the complexities and uncertainties in measuring the actual damages that
         would be sustained by reason of the failure of a Member to comply with
         such provision and (ii) the uniqueness of the Company business and the
         relationship among the Members. Accordingly, the Members agree that the
         provisions of this Section 3.03 may be enforced by specific
         performance.

                  (b)      Dispositions of Membership Interests.

                           (i)      General Restriction. A Member may not
                  Dispose of all or any portion of its Membership Interest
                  except by complying with all of the following requirements:

                                    (A)      such Member must receive the
                           unanimous consent of the non-Disposing Members, which
                           consent shall not be unreasonably withheld by each of
                           such other Members; provided, however, that such
                           consent need not be obtained if (I) the proposed
                           Assignee is a Affiliate of the Disposing Member and
                           (II) such proposed Assignee demonstrates to

                                       10


                           the reasonable satisfaction of the other Members that
                           it has the ability to meet the financial and
                           contractual commitments and other obligations of the
                           Disposing Member; and

                                    (B)      such Member must comply with the
                           requirements of Section 3.03(b)(iii) and, if the
                           Assignee is to be admitted as a Member, Section
                           3.03(b)(ii).

                           (ii)     Admission of Assignee as a Member. An
                  Assignee has the right to be admitted to the Company as a
                  Member, with the Membership Interest (and attendant Sharing
                  Ratio) so transferred to such Assignee, only if (A) the
                  Disposing Member making the Disposition has granted the
                  Assignee either (I) the Disposing Member's entire Membership
                  Interest or (II) the express right to be so admitted; and (B)
                  such Disposition is effected in strict compliance with this
                  Section 3.03.

                           (iii)    Requirements Applicable to All Dispositions
                  and Admissions. In addition to the requirements set forth in
                  Sections 3.03(b)(i) and 3.03(b)(ii), any Disposition of a
                  Membership Interest and any admission of an Assignee as a
                  Member shall also be subject to the following requirements,
                  and such Disposition (and admission, if applicable) shall not
                  be effective unless such requirements are complied with;
                  provided, however, that the Management Committee, in its sole
                  and absolute discretion, may waive any of the following
                  requirements:

                                    (A)      Disposition Documents. The
                           following documents must be delivered to the
                           Management Committee and must be satisfactory, in
                           form and substance, to the Management Committee:

                                    (I)      Disposition Instrument. A copy of
                                    the instrument pursuant to which the
                                    Disposition is effected.

                                    (II)     Ratification of this Agreement. An
                                    instrument, executed by the Disposing Member
                                    and its Assignee, containing the following
                                    information and agreements, to the extent
                                    they are not contained in the instrument
                                    described in Section 3.03(b)(iii)(A)(I): (1)
                                    the notice address of the Assignee; (2) if
                                    applicable, the Parent of the Assignee; (3)
                                    the Sharing Ratios after the Disposition of
                                    the Disposing Member and its Assignee (which
                                    together must total the Sharing Ratio of the
                                    Disposing Member before the Disposition);
                                    (4) the Assignee's ratification of this
                                    Agreement and agreement to be bound by it,
                                    and its confirmation that the
                                    representations and warranties in Section
                                    3.02 are true and correct with respect to
                                    it; (5) the Assignee's ratification of all
                                    of the Project Agreements and agreement by
                                    be bound by them, to the same extent that
                                    the Disposing Member was bound by them prior
                                    to the Disposition; and (6) representations
                                    and warranties by the Disposing Member and
                                    its Assignee (aa) that the Disposition and
                                    admission is being made in accordance with
                                    all applicable Laws, and (bb) that the

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                                    matters set forth in Sections
                                    3.03(b)(iii)(A)(III) and (IV) are true and
                                    correct.

                                    (III)    Securities Law Opinion. Unless the
                                    Membership Interest subject to the
                                    Disposition is registered under the
                                    Securities Act and any applicable state
                                    securities Law, or the proposed Assignee is
                                    a Affiliate as described in 3.03(b)(i)(A)
                                    above, a favorable opinion of the Company's
                                    legal counsel, or of other legal counsel
                                    acceptable to the Management Committee, to
                                    the effect that the Disposition and
                                    admission is being made pursuant to a valid
                                    exemption from registration under those Laws
                                    and in accordance with those Laws.

                                    (IV)     Tax Opinion. A favorable opinion of
                                    the Certified Public Accountants, or of
                                    other certified public accountants
                                    acceptable to the Management Committee, to
                                    the effect that the Disposition would not
                                    result in the Company's being considered to
                                    have terminated within the meaning of Code
                                    Section 708.

                                    (B)      Payment of Expenses. The Disposing
                           Member and its Assignee shall pay, or reimburse the
                           Company for, all reasonable costs and expenses
                           incurred by the Company in connection with the
                           Disposition and admission, including the legal fees
                           incurred in connection with the legal opinions
                           referred to in Sections 3.03(b)(iii)(A)(III) and
                           (IV), on or before the tenth Day after the receipt by
                           that Person of the Company's invoice for the amount
                           due.

                                    (C)      No Release. No Disposition of a
                           Membership Interest shall effect a release of the
                           Disposing Member from any liabilities to the Company
                           or the other Members arising from events occurring
                           prior to the Disposition.

                           (iv)     Change of Member Control. A Change of Member
                  Control must also comply with the requirements of this Section
                  3.03.

                  (c)      Encumbrances of Membership Interest. A Member may
         Encumber its Membership Interest if (i) the instrument creating such
         Encumbrance provides that any foreclosure of such Encumbrance (or
         Disposition in lieu of such foreclosure) must comply with the
         requirements of Section 3.03(b), and (ii) any such Encumbrance is not
         prohibited by the Loan Documents.

         3.04     Creation of Additional Membership Interest. Provided that the
same is not prohibited by the Loan Documents, additional Membership Interests
may be created and issued to existing Members or to other Persons, and such
other Persons may be admitted to the Company as Members, with the unanimous
consent of the existing Members, on such terms and conditions as the existing
Members may unanimously determine at the time of admission. The terms of
admission or issuance must specify the Sharing Ratios applicable thereto and may

                                       12


provide for the creation of different classes or groups of Members having
different rights, powers, and duties. The Management Committee may reflect the
creation of any new class or group in an amendment to this Agreement indicating
the different rights, powers, and duties. Any such admission is effective only
after the new Member has executed and delivered to the Members an instrument
containing the notice address of the new Member, the Assignee's ratification of
this Agreement and agreement to be bound by it, and its confirmation that the
representations and warranties in Section 3.02 are true and correct with respect
to it. The provisions of this Section 3.04 shall not apply to Dispositions of
Membership Interests or admissions of Assignees in connection therewith, such
matters being governed by Section 3.03.

         3.05     Access to Information. Each Member shall be entitled to
receive any information that it may request concerning the Company; provided,
however, that this Section 3.05 shall not obligate the Company or the Management
Committee to create any information that does not already exist at the time of
such request (other than to convert existing information from one medium to
another, such as providing a printout of information that is stored in a
computer database). Each Member shall also have the right, upon reasonable
notice, and at all reasonable times during usual business hours to inspect the
properties of the Company and to audit, examine and make copies of the books of
account and other records of the Company. Such right may be exercised through
any agent or employee of such Member designated in writing by it or by an
independent public accountant, engineer, attorney or other consultant so
designated. The Member making the request shall bear all costs and expenses
incurred in any inspection, examination or audit made on such Member's behalf.
Confidential Information obtained pursuant to this Section 3.05 shall be subject
to the provisions of Section 3.06.

         3.06     Confidential Information.

                  (a)      Except as permitted by Section 3.06(b), (i) each
         Member shall keep confidential all Confidential Information and shall
         not disclose any Confidential Information to any Person, including any
         of its Affiliates, and (ii) each Member shall use the Confidential
         Information only in connection with the Company.

                  (b)      Notwithstanding Section 3.06(a), but subject to the
         other provisions of this Section 3.06, a Member may make the following
         disclosures and uses of Confidential Information:

                           (i)      disclosures to another Member in connection
                  with the Company;

                           (ii)     disclosures and uses that are approved by
                  the Management Committee;

                           (iii)    disclosures to an Affiliate of such Member
                  on a "need to know" basis in connection with the Company, if
                  such Affiliate has agreed to abide by the terms of this
                  Section 3.06;

                           (iv)     disclosures to a Person that is not a Member
                  or an Affiliate of a Member, if such Person has been retained
                  to provide services by the Member in

                                       13


                  connection with the Company or such Member's Membership
                  Interest and has agreed to abide by the terms of this Section
                  3.06;

                           (v)      disclosures to lenders, potential lenders or
                  other Persons providing financing to the Company and potential
                  purchasers of equity interests in the Company, if such Persons
                  have agreed to abide by the terms of this Section 3.06;

                           (vi)     disclosures to any independent system
                  operator or its consultants and representatives in connection
                  with the Acquisitions or the conduct of the businesses of the
                  Owner Entities;

                           (vii)    disclosures to Governmental Authorities that
                  are necessary to operate the Projects;

                           (viii)   disclosures that a Member is legally
                  compelled to make by deposition, interrogatory, request for
                  documents, subpoena, civil investigative demand, order of a
                  court of competent jurisdiction, or similar process, or
                  otherwise by Law or securities exchange requirements;
                  provided, however, that, prior to any such disclosure, such
                  Member shall, to the extent legally permissible:

                                    (A)      provide the Management Committee
                           with prompt notice of such requirements so that one
                           or more of the Members may seek a protective order or
                           other appropriate remedy or waive compliance with the
                           terms of this Section 3.06(b)(vii);

                                    (B)      consult with the Management
                           Committee on the advisability of taking steps to
                           resist or narrow such disclosure; and

                                    (C)      cooperate with the Management
                           Committee and with the other Members in any attempt
                           one or more of them may make to obtain a protective
                           order or other appropriate remedy or assurance that
                           confidential treatment will be afforded the
                           Confidential Information; and in the event such
                           protective order or other remedy is not obtained, or
                           the other Members waive compliance with the
                           provisions hereof, such Member agrees (I) to furnish
                           only that portion of the Confidential Information
                           that the other Members are advised by counsel to the
                           disclosing Member is legally required and (II) to
                           exercise all reasonable efforts to obtain assurance
                           that confidential treatment will be accorded such
                           Confidential Information.

                  (c)      Each Member shall take such precautionary measures as
         may be required to ensure (and such Member shall be responsible for)
         compliance with this Section 3.06 by any of its Affiliates, and its and
         their directors, officers, employees and agents, and other Persons to
         which it may disclose Confidential Information in accordance with this
         Section 3.06.

                  (d)      A Terminated Member shall promptly destroy (and
         provide a certificate of destruction to the Company with respect to) or
         return to the Company, as directed by the Management Committee, all
         Confidential Information in its possession. Notwithstanding

                                       14


         the immediately-preceding sentence, a Terminated Member may, subject to
         the other provisions of this Section 3.06, retain and use Confidential
         Information for the limited purpose of preparing such Terminated
         Member's tax returns and defending audits, investigations and
         proceedings relating thereto.

                  (e)      The Members agree that no adequate remedy at law
         exists for a breach or threatened breach of any of the provisions of
         this Section 3.06, the continuation of which unremedied will cause the
         Company and the other Members to suffer irreparable harm. Accordingly,
         the Members agree that the Company and the other Members shall be
         entitled, in addition to other remedies that may be available to them,
         to immediate injunctive relief from any breach of any of the provisions
         of this Section 3.06 and to specific performance of their rights
         hereunder, as well as to any other remedies available at law or in
         equity.

                  (f)      The obligations of the Members under this Section
         3.06 shall terminate on the third anniversary of the end of the Term.

         3.07     Liability to Third Parties. No Member shall be liable for the
debts, obligations or liabilities of the Company.

         3.08     Withdrawal. A Member may not withdraw or resign from the
Company except as permitted by this Agreement.

                                    ARTICLE 4
                             CAPITAL CONTRIBUTIONS

         4.01     Initial Capital Contributions. Contemporaneously with the
execution by such Member of this Agreement, each Member shall make the Capital
Contributions described for that Member in Exhibit A.

         4.02     Subsequent Capital Contributions. Without creating any rights
in favor of any third party, each Member shall contribute to the Company, in
cash, on or before the date specified as hereinafter described, that Member's
Sharing Ratio of all monies that in the unanimous judgment of the Management
Committee are necessary to enable the Company to acquire the Projects and to
cause the assets of the Operating Entities to be properly operated and
maintained and to pay and perform their respective costs, expenses, obligations
and liabilities. The Management Committee shall notify each Member of the need
for Capital Contributions pursuant to this Section 4.02 when appropriate, which
notice must include a statement in reasonable detail of the proposed uses of the
Capital Contributions and a date (which date may be no earlier than the fifth
Business Day following each Member's receipt of its notice) before which the
Capital Contributions must be made. Notices for Capital Contributions must be
made to all Members in accordance with their Sharing Ratios.

         4.03     Failure to Contribute.

                                       15


         (a) If a Member does not contribute, within 10 Days of the date
required, all or any portion of a Capital Contribution that Member is required
to make as provided in this Agreement, the other Members may cause the Company
to exercise, on notice to that Member (the "Non-Contributing Member"), one or
more of the following remedies:

                  (i)      taking such action (including court proceedings) as
         the other Members may deem appropriate to obtain payment by the
         Non-Contributing Member of the portion of the Non-Contributing Member's
         Capital Contribution that is in default, together with interest thereon
         at the Default Rate from the date that the Capital Contribution was due
         until the date that it is made, all at the cost and expense of the
         Non-Contributing Member;

                  (ii)     permitting the other Members in proportion to their
         Sharing Ratios or in such other percentages as they may agree (the
         "Lending Member, " whether one or more), to advance the portion of the
         Non-Contributing Member's Capital Contribution that is in default, with
         the following results:

                           (A)      the sum advanced constitutes a loan from the
                  Lending Member to the Non-Contributing Member and a Capital
                  Contribution of that sum to the Company by the
                  Non-Contributing Member pursuant to the applicable provisions
                  of this Agreement,

                           (B)      the principal balance of the loan and all
                  accrued unpaid interest thereon is due and payable in whole on
                  the tenth Day after written demand therefor by the Lending
                  Member to the Non-Contributing Member,

                           (C)      the amount lent bears interest at the
                  Default Rate from the Day that the advance is deemed made
                  until the date that the loan, together with all interest
                  accrued on it, is repaid to the Lending Member,

                           (D)      all distributions from the Company that
                  otherwise would be made to the Non-Contributing Member
                  (whether before or after dissolution of the Company) instead
                  shall be paid to the Lending Member until the loan and all
                  interest accrued on it have been paid in full to the Lending
                  Member (with payments being applied first to accrued and
                  unpaid interest and then to principal),

                           (E)      the payment of the loan and interest accrued
                  on it is secured by a security interest in the
                  Non-Contributing Member's Membership Interest, as more fully
                  set forth in Section 4.03(b), and

                           (F)      the Lending Member has the right, in
                  addition to the other rights and remedies granted to it
                  pursuant to this Agreement or available to it at Law or in
                  equity, to take any action (including court proceedings) that
                  the Lending Member may deem appropriate to obtain payment by
                  the Non-

                                       16


                           Contributing Member of the loan and all accrued and
                           unpaid interest on it, at the cost and expense of the
                           Non-Contributing Member;

                           (iii)    exercising the rights of a secured party
                  under the Uniform Commercial Code of the State of Delaware, as
                  more fully set forth in Section 4.03(b); or

                           (iv) exercising any other rights and remedies
                  available at Law or in equity.

In addition, the failure to make such contributions shall constitute a Default
by the Non-Contributing Member, and the other Members shall have the rights set
forth in Article 9 with respect to such Default.

                  (b)      Subject and subordinate to the rights of any creditor
         of the Company under the Loan Documents, each Member grants to the
         Company, and to each Lending Member with respect to any loans made by
         the Lending Member to that Member as a Non-Contributing Member pursuant
         to Section 4.03(a)(ii), as security, equally and ratably, for the
         payment of all Capital Contributions that Member has agreed to make and
         the payment of all loans and interest accrued on them made by Lending
         Members to that Member as a Non-Contributing Member pursuant to Section
         4.03(a)(ii), a security interest in and a general lien on its
         Membership Rights and the proceeds thereof, all under the Uniform
         Commercial Code of the State of Delaware. On any default in the payment
         of a Capital Contribution or in the payment of such a loan or interest
         accrued on it, the Company or the Lending Member, as applicable, is
         entitled to all the rights and remedies of a secured party under the
         Uniform Commercial Code of the State of Delaware with respect to the
         security interest granted in this Section 4.03(b). Each Member shall
         execute and deliver to the Company and the other Members all financing
         statements and other instruments that the Lending Member may request to
         effectuate and carry out the preceding provisions of this Section
         4.03(b). At the option of a Lending Member, this Agreement or a carbon,
         photographic, or other copy hereof may serve as a financing statement.

         4.04     Loans. If the Company does not have sufficient cash to pay its
obligations, any Member(s) that may agree to do so with the consent of the
Management Committee may advance all or part of the needed funds to or on behalf
of the Company. An advance described in this Section 4.04 constitutes a loan
from the Member to the Company, bears interest at a rate determined by the
Management Committee from the date of the advance until the date of payment, and
is not a Capital Contribution.

         4.05     Return of Contributions. Except as expressly provided herein,
a Member is not entitled to the return of any part of its Capital Contributions
or to be paid interest in respect of either its Capital Account or its Capital
Contributions. An unrepaid Capital Contribution is not a liability of the
Company or of any Member. A Member is not required to contribute or to lend any
cash or property to the Company to enable the Company to return any Member's
Capital Contributions.

                                       17


         4.06     Capital Accounts. A Capital Account shall be established and
maintained for each Member. Each Member's Capital Account shall be increased by
(a) the amount of money contributed by that Member to the Company, (b) the fair
market value of property contributed by that Member to the Company (net of
liabilities secured by such contributed property that the Company is considered
to assume or take subject to under Section 752 of the Code), and (c) allocations
to that Member of Company income and gain (or items thereof), including income
and gain exempt from tax and income and gain described in Treasury Regulation
Section 1.704-l(b)(2)(iv)(g), but excluding income and gain described in
Treasury Regulation Section 1.704-l(b)(4)(i), and shall be decreased by (d) the
amount of money distributed to that Member by the Company, (e) the fair market
value of property distributed to that Member by the Company (net of liabilities
secured by such distributed property that such Member is considered to assume or
take subject to under Section 752 of the Code), (f) allocations to that Member
of expenditures of the Company described (or treated as described) in Section
705(a)(2)(B) of the Code, and (g) allocations of Company loss and deduction (or
items thereof), including loss and deduction described in Treasury Regulation
Section 1.704-l(b)(2)(iv)(g), but excluding items described in (f) above and
loss or deduction described in Treasury Regulation Section 1.704-l(b)(4)(i) or
1.704-l(b)(4)(iii). The Members' Capital Accounts shall also be maintained and
adjusted as permitted by the provisions of Treasury Regulation Section
1.704-l(b)(2)(iv)(f) and as required by the other provisions of Treasury
Regulation Sections 1.704-l(b)(2)(iv) and 1.704-l(b)(4), including adjustments
to reflect the allocations to the Members of depreciation, depletion,
amortization, and gain or loss as computed for book purposes rather than the
allocation of the corresponding items as computed for tax purposes, as required
by Treasury Regulation Section 1.704-1(b)(2)(iv)(g). Thus, the Members' Capital
Accounts shall be increased or decreased to reflect a revaluation of the
Company's property on its books based on the fair market value of the Company's
property on the date of adjustment immediately prior to (A) the contribution of
money or other property to the Company by a new or existing Member as
consideration for a Membership Interest or an increased Sharing Ratio, (B) the
distribution of money or other property by the Company to a Member as
consideration for a Membership Interest, or (C) the liquidation of the Company.
A Member that has more than one Membership Interest shall have a single Capital
Account that reflects all such Membership Interests, regardless of the class of
Membership Interests owned by such Member and regardless of the time or manner
in which such Membership Interests were acquired. Upon the Disposition of all or
a portion of a Membership Interest, the Capital Account of the Disposing Member
that is attributable to such Membership Interest shall carry over to the
Assignee in accordance with the provisions of Treasury Regulation Section
1.704-l(b)(2)(iv)(l).

                                       18


                                    ARTICLE 5
                          DISTRIBUTIONS AND ALLOCATIONS

         5.01     Distributions or Billings. Distributions to the Members shall
be made only to all simultaneously in proportion to their respective Sharing
Ratios (at the time the amounts of such distributions are determined) and in
such aggregate amounts and at such times as shall be determined by the
Management Committee and as are permitted by the Loan Documents. When so
permitted, the Management Committee shall endeavor to distribute to the Members,
on or before the end of each calendar quarter, or more often if approved by the
Management Committee, the estimated amount of any cash available for such
calendar quarter (net of any adjustments, if any, made to reflect the actual
cash available for the preceding calendar quarter). Any cash in excess of the
Working Capital Requirements shall be distributed to the Members based on their
respective Sharing Ratios.

         5.02     Distributions on Dissolution and Winding Up. Upon the
dissolution and winding up of the Company, after adjusting the Capital Accounts
for all distributions made under Section 5.01 and all allocations under Article
5, all available proceeds distributable to the Members as determined under
Section 11.02 shall be distributed to all of the Members to the extent of the
Members' positive Capital Account balances.

         5.03     Allocations.

                  (a)      For purposes of maintaining the Capital Accounts
         pursuant to Section 4.06 and for income tax purposes, except as
         provided in Section 5.03(b), each item of income, gain, loss, deduction
         and credit of the Company shall be allocated to the Members in
         accordance with their Sharing Ratios.

                  (b)      For income tax purposes, income, gain, loss, and
         deduction with respect to property contributed to the Company by a
         Member or revalued pursuant to Treasury Regulation Section
         1.704-l(b)(2)(iv)(f) shall be allocated among the Members in a manner
         that takes into account the variation between the adjusted tax basis of
         such property and its book value, as required by Section 704(c) of the
         Code and Treasury Regulation Section 1.704-l(b)(4)(i), using the
         remedial allocation method permitted by Treasury Regulation Section
         1.704-3(d).

         5.04     Varying Interests. All items of income, gain, loss, deduction
or credit shall be allocated, and all distributions shall be made, to the
Persons shown on the records of the Company to have been Members as of the last
calendar day of the period for which the allocation or distribution is to be
made. Notwithstanding the foregoing, if during any taxable year there is a
change in any Member's Sharing Ratio, the Members agree that their allocable
shares of such items for the taxable year shall be determined on any method
determined by the Management Committee to be permissible under Code Section 706
and the related Treasury Regulations to take account of the Members' varying
Sharing Ratios.

                                       19


                                    ARTICLE 6
                                   MANAGEMENT

         6.01     Management by Members. Except as described below in Section
6.03, the management of the Company is fully vested in the Members, acting
exclusively in their membership capacities. To facilitate the orderly and
efficient management of the Company, the Members shall act (a) collectively as a
"committee of the whole" pursuant to Section 6.02, (b) through the delegation of
responsibility and authority to the Manager pursuant to Section 6.03, and (c)
through the delegation from time to time of certain responsibility and authority
to particular Members pursuant to Section 6.04. No Member has the right, power
or authority to act for or on behalf of the Company, to do any act that would be
binding on the Company, or to incur any expenditures on behalf of the Company,
except in accordance with the immediately preceding sentence. Decisions or
actions taken in accordance with the provisions of this Agreement shall
constitute decisions or actions by the Company and shall be binding on each
Member, Representative, Officer and employee of the Company.

         6.02     Management Committee. The Members shall act collectively
through meetings as a "committee of the whole," which is hereby named the
"Management Committee. " The Management Committee shall conduct its affairs in
accordance with the following provisions and the other provisions of this
Agreement:

         (a)      Representatives.

                           (i)      Designation. To facilitate the orderly and
                  efficient conduct of Management Committee meetings, each
                  Member shall notify the other Members, from time to time, of
                  the identity of three of its officers, employees or agents who
                  will represent it at such meetings (each a "Representative").
                  In addition, each Member may (but shall have no obligation to)
                  notify the other Members, from time to time, of the identity
                  of other officers, employees or agents who will represent it
                  at any meeting that the Member's Representatives are unable to
                  attend (each an "Alternate Representative"). (The term
                  "Representative" shall also refer to any Alternate
                  Representative that is actually performing the duties of the
                  applicable Representative.). The initial Representatives of
                  each Member are set forth on Exhibit A. A Member may designate
                  different Representatives or Alternate Representatives for any
                  meeting of the Management Committee by notifying each of the
                  other Members at least three Business Days prior to the
                  scheduled date for such meeting; provided, however, that if
                  giving such advance notice is not feasible, then such new
                  Representatives or Alternate Representatives shall present
                  written evidence of their authority at the commencement of
                  such meeting.

                           (ii)     Authority. Each Representative shall have
                  the full authority to act on behalf of the Member that
                  designated such Representative; the action of a Representative
                  at a meeting (or through a written consent) of the Management
                  Committee shall bind the Member that designated such
                  Representative; and the other Members shall be entitled to
                  rely upon such action without further inquiry or

                                       20


                  investigation as to the actual authority (or lack thereof) of
                  such Representative. In addition, the act of an Alternate
                  Representative shall be deemed the act of the Representative
                  for which such Alternate Representative is acting, without the
                  need to produce evidence of the absence or unavailability of
                  such Representative.

                           (iii)    DISCLAIMER OF DUTIES; INDEMNIFICATION. EACH
                  REPRESENTATIVE SHALL REPRESENT, AND OWE DUTIES TO, ONLY THE
                  MEMBER THAT DESIGNATED SUCH REPRESENTATIVE (THE NATURE AND
                  EXTENT OF SUCH DUTIES BEING AN INTERNAL CORPORATE AFFAIR OF
                  SUCH MEMBER), AND NOT TO THE COMPANY, ANY OTHER MEMBER OR
                  REPRESENTATIVE, OR ANY OFFICER OR EMPLOYEE OF THE COMPANY. THE
                  PROVISIONS OF SECTION 6.05 SHALL ALSO INURE TO THE BENEFIT OF
                  EACH MEMBER'S REPRESENTATIVES. THE COMPANY SHALL INDEMNIFY,
                  PROTECT, DEFEND, RELEASE AND HOLD HARMLESS EACH REPRESENTATIVE
                  FROM AND AGAINST ANY CLAIMS ASSERTED BY OR ON BEHALF OF ANY
                  PERSON (INCLUDING ANOTHER MEMBER), OTHER THAN THE MEMBER THAT
                  DESIGNATED SUCH REPRESENTATIVE, THAT ARISE OUT OF, RELATE TO
                  OR ARE OTHER WISE ATTRIBUTABLE TO, DIRECTLY OR INDIRECTLY,
                  SUCH REPRESENTATIVE'S SERVICE ON THE MANAGEMENT COMMITTEE,
                  OTHER THAN SUCH CLAIMS ARISING OUT OF THE FRAUD OR WILLFUL
                  MISCONDUCT OF SUCH REPRESENTATIVE.

                           (iv)     Attendance. Each Member shall use all
                  reasonable efforts to cause its Representatives or Alternate
                  Representatives to attend each meeting of the Management
                  Committee, unless its Representatives are unable to do so
                  because of a "force majeure" event or other event beyond his
                  reasonable control, in which event such Member shall use all
                  reasonable efforts to cause its Representatives or Alternate
                  Representatives to participate in the meeting by telephone
                  pursuant to Section 6.02(h).

                  (b)      Chairman and Secretary. One of the Representatives
         will be designated as Chairman of the Management Committee, in
         accordance with this Section 6.02(b), to preside over meetings of the
         Management Committee. The Management Committee shall also designate a
         Secretary of the Management Committee, who need not be a
         Representative.

                  (c)      Procedures. The Secretary of the Management Committee
         shall maintain written minutes of each of its meetings, which shall be
         submitted for approval no later than the next regularly-scheduled
         meeting. The Management Committee may adopt whatever rules and
         procedures relating to its activities as it may deem appropriate,
         provided that such rules and procedures shall not be inconsistent with
         or violate the provisions of this Agreement.

                  (d)      Time and Place of Meetings. The Management Committee
         shall meet quarterly, subject to more or less frequent meetings upon
         approval of the Management

                                       21


         Committee. Notice of, and an agenda for, all Management Committee
         meetings shall be provided by the Chairman to all Members at least ten
         Days prior to the date of each meeting, together with proposed minutes
         of the previous Management Committee meeting (if such minutes have not
         been previously ratified). Special meetings of the Management Committee
         may be called at such times, and in such manner, as any Member deems
         necessary. Any Member calling for any such special meeting shall notify
         the Chairman, who in turn shall notify all Members of the date and
         agenda for such meeting at least ten Days prior to the date of such
         meeting. Such ten-day period may be shortened by the Management
         Committee. All meetings of the Management Committee shall be held at a
         location designated by the Chairman. Attendance of a Member at a
         meeting of the Management Committee shall constitute a waiver of notice
         of such meeting, except where such Member attends the meeting for the
         express purpose of objecting to the transaction of any business on the
         ground that the meeting is not lawfully called or convened.

                  (e)      Quorum. The presence of one Representative designated
         by each Member shall constitute a quorum for the transaction of
         business at any meeting of the Management Committee.

                  (f)      Voting. Except as provided otherwise in this
         Agreement, (i) voting at any meeting of the Management Committee shall
         be according to the Members' respective Sharing Ratios, and (ii) the
         affirmative vote of Members holding a majority of the Sharing Ratios
         shall constitute the act of the Management Committee.

                  (g)      Action by Written Consent. Any action required or
         permitted to be taken at a meeting of the Management Committee may be
         taken without a meeting, without prior notice, and without a vote if a
         consent or consents in writing, setting forth the action so taken, is
         signed by Members that could have taken the action at a meeting of the
         Management Committee at which all Members entitled to vote on the
         action were represented and voted.

                  (h)      Meetings by Telephone. Members may participate in and
         hold such meeting by means of conference telephone, video conference or
         similar communications equipment by means of which all persons
         participating in the meeting can hear each other. Participation in such
         a meeting shall constitute presence in person at such meeting, except
         where a Member participates in the meeting for the express purpose of
         objecting to the transaction of any business on the ground that the
         meeting is not lawfully called or convened.

                  (i)      Subcommittees. The Management Committee may create
         such subcommittees, delegate to such subcommittees such authority and
         responsibility, and rescind any such delegations, as it may deem
         appropriate.

                  (j)      Officers. The Management Committee may designate one
         or more Persons to be Officers of the Company. Any Officers so
         designated shall have such titles and, subject to the other provisions
         of this Agreement, have such authority and perform

                                       22


         such duties as the Management Committee may specifically delegate to
         them and shall serve at the pleasure of the Management Committee.

         6.03     Manager. The Members, through unanimous vote, shall designate
a manager of the Company (the "Manager"), who shall be an employee of one of the
Members or an Affiliate of one of the Members

                  (a)      Manager's Duties. The Manager shall, under the
         direction of the Management Committee, perform the following duties:

                           (i)      generally direct and coordinate the
                  day-to-day business activities of the Company, subject to
                  subsection 6.03(b) below;

                           (ii)     represent the Company in public and
                  community relations;

                           (iii)    prepare and submit summary reports;

                           (iv)     administer the services of outside
                  professional consultants engaged by the Manager to perform his
                  or her duties described herein; and

                           (v)      perform any other duties specifically
                  delegated to the Manager by the Management Committee.

                  (b)      Limitations on Manager's Authority. Notwithstanding
         the above, without the prior written approval of the Management
         Committee, the Manager shall not take any actions with respect to:

                           (i)      the borrowing of money or other financings;

                           (ii)     the making of loans or advances or granting
                  of financial or operating guarantees;

                           (iii)    the sale or lease of any asset or group of
                  assets (other than in the ordinary course of business);

                           (iv)     the acquisition of any asset or group of
                  assets (other than in the ordinary course of business);

                           (v)      the negotiation of, entering into,
                  termination of, or material amendment or modification of any
                  agreement pertaining to the business, finances or operations
                  of the Company;

                           (vi)     changes in or adoption of accounting
                  practices;

                           (vii)    changes in or adoption of any material tax
                  position or policy;

                           (viii)   acquiring any insurance coverage or any
                  material change therein;

                                       23


                           (ix)     distributions to the Members of cash or
                  other assets;

                           (x)      material contracts or transactions with
                  either Member or an Affiliate of either Member;

                           (xi)     renewal or termination of any agreement
                  between the Company and a Member or an Affiliate of a Member,
                  or the modification or amendment of any material term of any
                  agreement between the Company and a Member or an Affiliate of
                  a Member;

                           (xii)    employment of attorneys in connection with
                  any legal claim or settlement of any action relating to a
                  legal claim which could have a material effect on the Company
                  or either Member;

                           the entering into of any new line of business;

                           (xiii)   the making, execution or delivery of any
                  assignment of judgment, chattel mortgage, deed, guarantee,
                  indemnity bond, surety bond or contract to sell all or
                  substantially all of the property of the Company; or

                           (xiv)    any merger, consolidation, reorganization,
                  creation of subsidiaries or entering into any joint ventures.

The Manager shall have only the specific duties delegated herein and by the
Management Committee and authority to perform those duties; shall have no right
to make contributions to, or to share in the profits and losses of, and
distributions from, the Company; and shall have no right to vote on any matter
pertaining to the Company.

                  (c)      Service and Compensation.

                           (i)      Notwithstanding that the Manager shall be an
                                    employee of a Member (or its Affiliate), the
                                    Manager shall discharge the duties set forth
                                    above. The Manager may engage other
                                    employees of the Member (or its Affiliate)
                                    of which the Manager is an employee, and
                                    third party contractors, to assist the
                                    Manager in discharging the duties described
                                    above, subject to the provisions below.
                                    Subject to the provisions next below, the
                                    Company shall pay to the Member (or its
                                    Affiliate, as applicable) that is the
                                    employer of the Manager (and such other
                                    employees of such Member or Affiliate of
                                    such Member who are assisting the Manager),
                                    for the man-hours expended by the Manager
                                    and such other employees (rounded to the
                                    nearest quarter of man-hour) at rates agreed
                                    upon by the Management Committee.

                           (ii)     The Manager shall provide to the Management
                                    Committee an annual budget with respect to
                                    services performed by Manager, employees and
                                    third party consultants, as described above,
                                    and for other costs associated therewith.
                                    Any payment for services or third

                                       24


                                    party expenses which causes the annual
                                    budgeted amount for such category to be
                                    exceeded by 10% shall require approval of
                                    the Management Committee. The annual budget
                                    for services to be performed by the Manager
                                    shall be reviewed quarterly by the Manager
                                    and the Management Committee, and shall be
                                    revised as appropriate. In addition, The
                                    Manager shall communicate promptly to the
                                    Management Committee any significant
                                    variances from estimates set forth in the
                                    Budget with respect to the services of
                                    Manager, employees and outside consultants.

                           (iii)    The Manager may be replaced at any time by
                                    unanimous decision of the Management
                                    Committee (excluding the Manager, if the
                                    Manager is also a Representative or an
                                    Alternate Representative).

                  (d)      Indemnification. The Company shall indemnify,
         protect, defend, release and hold harmless the Manager from and against
         any claims asserted by or on behalf of any Person (including a Member,
         or Affiliate of a Member, of which the Manager is not an employee),
         other than the claims of a Member (or Affiliate of a Member) of which
         the Manager is an employee based on such employment relationship (which
         shall be an internal corporate affair of such Member or Affiliate of
         such member), that arise out of, relate to or are otherwise
         attributable to, directly or indirectly, the Manager's performance of
         his or her duties on behalf of the Company, except for claims arising
         out of the fraud or willful misconduct of the Manager.

         6.04     Delegation to Particular Member. The Management Committee may
delegate to one or more Members such authority and duties as the Management
Committee may deem advisable. Decisions or actions taken by any such Member in
accordance with the provisions of this Agreement shall constitute decisions or
actions by the Company and shall be binding on each Member, Representative,
Officer and employee of the Company. Any delegation pursuant to this Section
6.04 may be revoked at any time by the Management Committee. With respect to
duties discharged hereunder by a Member (a) such Member may discharge such
duties through the personnel of a Affiliate of such Member, and (b) unless the
Members otherwise agree, the Company shall compensate such Member (or its
Affiliate, as applicable) for the performance of such duties in an amount equal
to the manhours expended by the personnel of such Member (or its Affiliate)
multiplied by the applicable rate(s) shown on Exhibit B (which rates each shall
escalate on the first day of each calendar year during the term hereof by an
amount which is 5% of the rate applicable during the prior calendar year), and
shall reimburse such Member for all out of pocket costs incurred by such Member
in discharging such duties. In addition, prior to performing any such duties,
the performing Member shall provide to the other Member for approval an estimate
of man-hours and types of personnel required to perform the delegated duties and
a schedule for the performance of the delegated duties and for other costs
associated therewith, and shall promptly inform the other Member of any variance
from the budget or schedule.

         6.05     Affiliate Agreements; Conflicts of Interest. Subject to any
other agreement between the Members (and their respective Affiliates, as
applicable), a Member or an Affiliate of a Member may engage in and possess
interests in other business ventures of any and every type

                                       25


and description, independently or with others, including ones in competition
with the Company, with no obligation to offer to the Company, any other Member
or any Affiliate of another Member the right to participate therein. Subject to,
and in addition to, Section 6.04(a), the Company may transact business with any
Member or Affiliate thereof, provided the terms of those transactions are
approved by the Management Committee or expressly contemplated by this
Agreement. Without limiting the generality of the foregoing, the Members
recognize and agree that they and their respective Affiliates currently engage
in certain activities involving the generation, transmission, distribution,
marketing and trading of electricity and other energy products (including
futures, options, swaps, exchanges of future positions for physical deliveries
and commodity trading), and the gathering, processing, storage and
transportation of such products, as well as other commercial activities related
to such products, and that these and other activities by Members and their
Affiliates may be made possible or more profitable by reason of the Company's
activities (herein referred to as "Outside Activities "). The Members agree that
(i) no Member or Affiliate of a Member shall be restricted in its right to
conduct, individually or jointly with others, for its own account any Outside
Activities, and (ii) no Member or its Affiliates shall have any duty or
obligation, express or implied, to account to, or to share the results or
profits of such Outside Activities with, the Company, any other Member or any
Affiliate of any other Member, by reason of such Outside Activities.

         6.06     Disclaimer of Duties and Liabilities.

                  (a)      NO MEMBER OR MANAGER SHALL OWE ANY DUTY (INCLUDING
         ANY FIDUCIARY DUTY) TO THE OTHER MEMBERS OR TO THE COMPANY, OTHER THAN
         THE DUTIES THAT ARE EXPRESSLY SET FORTH IN THIS AGREEMENT.

                  (b)      NO MEMBER OR MANAGER SHALL BE LIABLE (WHETHER IN
         CONTRACT, TORT OR OTHERWISE) FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
         CONSEQUENTIAL DAMAGES).

                  (c)      THE OBLIGATIONS OF THE MEMBERS UNDER THIS AGREEMENT
         ARE OBLIGATIONS OF THE MEMBERS ONLY, AND NO RECOURSE SHALL BE AVAILABLE
         AGAINST ANY OFFICER, DIRECTOR OR AFFILIATE OF ANY MEMBER, EXCEPT AS
         PERMITTED UNDER APPLICABLE LAW.

         6.07     Indemnification. Each Member shall indemnify, protect, defend,
release and hold harmless each other Member, and such other Member's
Representatives, Affiliates, and their respective directors, officers, employees
and agents from and against any Claims asserted by or on behalf of any Person
(including another Member) that arise out of, relate to or are otherwise
attributable to, directly or indirectly, a breach by the indemnifying Member of
this Agreement, or the negligence, gross negligence or willful misconduct of the
indemnifying Member in connection with the Project or this Agreement; provided,
however, that this Section 6.06 shall not apply to any Claim or other matter for
which a Member (or its Representative) has no liability or duty, or is
indemnified or released, pursuant to Section 6.02(a)(iii), 6.03, 6.05 or 6.06.

                                       26

                                    ARTICLE 7
                                      TAXES

         7.01     Tax Returns. The Tax Matters Member shall prepare and timely
file (on behalf of the Company) all federal, state and local tax returns
required to be filed by the Company. Each Member shall furnish to the Tax
Matters Member all pertinent information in its possession relating to the
Company's operations that is necessary to enable the Company's tax returns to be
timely prepared and filed. The Company shall bear the costs of the preparation
and filing of its returns.

         7.02     Tax Elections. The Company shall make the following elections
on the appropriate tax returns:

                  (a)      to adopt as the Company's fiscal year the calendar
         year;

                  (b)      to adopt the accrual method of accounting;

                  (c)      if a distribution of the Company's property as
         described in Code Section 734 occurs or upon a transfer of Membership
         Interest as described in Code Section 743 occurs, on request by notice
         from any Member, to elect, pursuant to Code Section 754, to adjust the
         basis of the Company's properties;

                  (d)      to elect to amortize the organizational expenses of
         the Company ratably over a period of 60 months as permitted by Section
         709(b) of the Code; and

                  (e)      any other election the Management Committee may deem
         appropriate.

Neither the Company nor any Member shall make an election for the Company to be
excluded from the application of the provisions of subchapter K of chapter 1 of
subtitle A of the Code or any similar provisions of applicable state law and no
provision of this Agreement (including Section 2.07) shall be construed to
sanction or approve such an election.

         7.03     Tax Matters Member.

                  (a)      NRG MidAtlantic LLC shall be the "tax matters
         partner" of the Company pursuant to Section 6231(a)(7) of the Code (the
         "Tax Matters Member"). At the request of each other Member, the Tax
         Matters Member shall take such action as may be necessary to cause, to
         the extent possible, such other Member to become a "notice partner"
         within the meaning of Section 6223 of the Code. The Tax Matters Member
         shall inform each other Member of all significant matters that may come
         to its attention in its capacity as Tax Matters Member by giving notice
         thereof on or before the fifth Business Day after becoming aware
         thereof and, within that time, shall forward to each other Member
         copies of all significant written communications it may receive in that
         capacity.

                  (b)      The Tax Matters Member shall take no action without
         the authorization of the Management Committee, other than such action
         as may be required by Law. Any cost or expense incurred by the Tax
         Matters Member in connection with its duties, including

                                       27


         the preparation for or pursuance of administrative or judicial
         proceedings, shall be paid by the Company.

                  (c)      The Tax Matters Member shall not enter into any
         extension of the period of limitations for making assessments on behalf
         of the Members without first obtaining the consent of the Management
         Committee. The Tax Matters Member shall not bind any Member to a
         settlement agreement without obtaining the consent of such Member. Any
         Member that enters into a settlement agreement with respect to any
         Company item (as described in Code Section 6231(a)(3)) shall notify the
         other Members of such settlement agreement and its terms within 90 Days
         from the date of the settlement.

                  (d)      No Member shall file a request pursuant to Code
         Section 6227 for an administrative adjustment of Company items for any
         taxable year without first notifying the other Members. If the
         Management Committee consents to the requested adjustment, the Tax
         Matters Member shall file the request for the administrative adjustment
         on behalf of the Members. If such consent is not obtained within 30
         Days from such notice, or within the period required to timely file the
         request for administrative adjustment, if shorter, any Member,
         including the Tax Matters Member, may file a request for administrative
         adjustment on its own behalf. Any Member intending to file a petition
         under Code Sections 6226, 6228 or other Code Section with respect to
         any item involving the Company shall notify the other Members of such
         intention and the nature of the contemplated proceeding. In the case
         where the Tax Matters Member is the Member intending to file such
         petition on behalf of the Company, such notice shall be given within a
         reasonable period of time to allow the other Members to participate in
         the choosing of the forum in which such petition will be filed.

                  (e)      If any Member intends to file a notice of
         inconsistent treatment under Code Section 6222(b), such Member shall
         give reasonable notice under the circumstances to the other Members of
         such intent and the manner in which the Member's intended treatment of
         an item is (or may be) inconsistent with the treatment of that item by
         the other Members.

                                    ARTICLE 8
                   BOOKS, RECORDS, REPORTS, AND BANK ACCOUNTS

         8.01     Maintenance of Books.

                  (a)      The Management Committee shall keep or cause to be
         kept at the principal office of the Company or at such other location
         approved by the Management Committee complete and accurate books and
         records of the Company, supporting documentation of the transactions
         with respect to the conduct of the Company's business and minutes of
         the proceedings of its Members and the Management Committee, and any
         other books and records that are required to be maintained by
         applicable Law.

                  (b)      The books of account of the Company shall be (i)
         maintained on the basis of a fiscal year that is the calendar year,
         (ii) maintained on an accrual basis in accordance

                                       28


         with generally accepted accounting principles, consistently applied,
         and (iii) audited by the Certified Public Accountants at the end of
         each calendar year.

         8.02     Reports.

                  (a)      With respect to each calendar year, the Management
         Committee shall prepare and deliver to each Member:

                           (i)      Within 120 Days after the end of such
                  calendar year, a profit and loss statement and a statement of
                  cash flows for such year, a balance sheet and a statement of
                  each Member's Capital Account as of the end of such year,
                  together with a report thereon of the Certified Public
                  Accountants; and

                           (ii)     Such federal, state and local income tax
                  returns and such other accounting, tax information and
                  schedules as shall be necessary for the preparation by each
                  Member on or before July 15 following the end of each calendar
                  year of its income tax return with respect to such year.

                  (b)      Within 15 Business Days after the end of each
         calendar month, the Management Committee shall cause to be prepared and
         delivered to each Member, with an appropriate certificate of the Person
         authorized to prepare the same (provided that the Management Committee
         may change the financial statements required by this Section 8.02(b) to
         a quarterly basis or may make such other change therein as it may deem
         appropriate):

                           (i)      A profit and loss statement and a statement
                  of cash flows for such month (including sufficient information
                  to permit the Members to calculate their tax accruals), for
                  the portion of the calendar year then ended;

                           (ii)     A balance sheet and a statement of each
                  Member's Capital Account as of the end of such month and the
                  portion of the calendar year then ended; and

                           (iii)    A statement comparing the actual financial
                  status and results of the Company as of the end of or for such
                  month and the portion of the calendar year then ended with the
                  budgeted or forecasted status and results as of the end of or
                  for such respective periods.

                  (c)      The Management Committee shall also cause to be
         prepared and delivered to each Member such other reports, forecasts,
         studies, budgets and other information as the Management Committee may
         request from time to time.

         8.03     Bank Accounts. Funds of the Company shall be deposited in such
banks or other depositories as shall be designated from time to time by the
Management Committee. All withdrawals from any such depository shall be made
only as authorized by the Management Committee and shall be made only by check,
wire transfer, debit memorandum or other written instruction.

                                       29


                                    ARTICLE 9
                                  BUYOUT OPTION

         9.01     Buyout Events. This Article 9 shall apply to any of the
following events (each a "Buyout Event"):

                  (a)      a Member shall dissolve or become Bankrupt; or

                  (b)      a Member shall commit a Default.

In each case, the Member with respect to whom a Buyout Event has occurred is
referred to herein as the "Affected Member."

         9.02     Procedure. If a Buyout Event occurs and is not cured within 30
Business Days of the Affected Member's receipt of notice thereof from another
Member (or such shorter period (not less than 10 Business Days) as may be
reasonable under the circumstances and set forth in such notice), then each of
the other Members shall have the option to acquire the Membership Interest of
the Affected Member (or to cause it to be acquired by a third party designated
by the other Members), in accordance with procedures that are substantively
equivalent to those set forth in Section 3.03(b)(iii) (and with the Members
exercising such preferential right also being referred to herein as "Purchasing
Members").

         9.03     Purchase Price; Terms and Method of Payment. The purchase
price for a Membership Interest being purchased pursuant to this Article 9 (the
"Purchase Price") shall be determined in the following manner. The Affected
Member and the Purchasing Members shall attempt to agree upon the fair market
value of the applicable Membership Interest and the terms and method of payment
of such amount. If those Members do not reach such agreement on or before the
30th Day following the exercise of the option, any such Member, by notice to the
others, may require the determination of fair market value and the terms and
method of payment to be made by the Arbitrator pursuant to Article 10.

         9.04     Closing. If an option to purchase is exercised in accordance
with the other provisions of this Article 9, the closing of such purchase shall
occur on the 30th Day after the determination of the Fair Market Value pursuant
to Section 9.03 (or, if later, the fifth Business Day after the receipt of all
applicable regulatory and governmental approvals to the purchase), and shall be
conducted in a manner substantively equivalent to that set forth in Section
3.03.

         9.05     Terminated Member. Upon the occurrence of a closing under
Section 9.04, the following provisions shall apply to the Affected Member (now a
"Terminated Member"):

                  (a)      The Terminated Member shall cease to be a Member
         immediately upon the occurrence of the closing.

                  (b)      As the Terminated Member is no longer a Member, it
         will no longer be entitled to receive any distributions (including
         liquidating distributions) or allocations from the Company, and neither
         it nor its Representative shall be entitled to exercise any

                                       30


         voting or consent rights or to receive any further information (or
         access to information) from the Company.

                  (c)      The Terminated Member must pay to the Company all
         amounts owed to it by such Member.

                  (d)      The Terminated Member shall remain obligated for all
         liabilities it may have under this Agreement or otherwise with respect
         to the Company that accrue prior to the closing.

                  (f)      The Sharing Ratio of the Terminated Member shall be
         allocated among the purchasing Members in the proportion of the total
         Purchase Price paid by each.

                                   ARTICLE 10
                               DISPUTE RESOLUTION

         10.01    Disputes. This Article 10 shall apply to any dispute arising
under or related to this Agreement (whether arising in contract, tort or
otherwise, and whether arising at law or in equity), including (a) any dispute
regarding the construction, interpretation, performance, validity or
enforceability of any provision of this Agreement or whether any Person is in
compliance with, or breach of, any provisions of this Agreement, and (b) the
applicability of this Article 10 to a particular dispute. Notwithstanding the
foregoing, this Article 10 shall not apply to any matters that, pursuant to the
provisions of this Agreement, are to be resolved by a vote of the Members
(including through the Management Committee); provided, however, that if a vote,
approval, consent, determination or other decision must, under the terms of this
Agreement, be made (or withheld) in accordance with a standard other than Sole
Discretion (such as a reasonableness standard), then the issue of whether such
standard has been satisfied may be a dispute to which this Article 10 applies.
Any dispute to which this Article 10 applies is referred to herein as a
"Dispute." With respect to a particular Dispute, each Member that is a party to
such Dispute is referred to herein as a "Disputing Member." The provisions of
this Article 10 shall be the exclusive method of resolving Disputes.

         10.02    Negotiation to Resolve Disputes. If a Dispute arises, either
Disputing Member may initiate the dispute-resolution procedures of this Article
10 by delivering a notice (a "Dispute Notice") to the other Disputing Members.
Within 10 Days of delivery of a Dispute Notice, each Disputing Member shall
designate a representative, and such representatives shall promptly meet
(whether by phone or in person) in a good faith attempt to resolve the Dispute.
If such representatives can resolve the Dispute, such resolution shall be
reported in writing and shall be binding upon the Disputing Members. If such
representatives are unable to resolve the Dispute within 30 Days following the
delivery of the Dispute Notice (or such other period as such representatives may
agree), or if a Disputing Member fails to appoint a representative within 10
Days of delivery following the delivery of the Dispute Notice, then the process
described in this Section 10.02 shall be repeated, with each Disputing Member
designating one of its senior officers to be its representative in such second
round of negotiations. If such representatives are unable to resolve the Dispute
within 30 Days following the delivery of the second Dispute Notice (or such
other period as such representatives may agree), or if a Disputing

                                       31


Member fails to appoint a representative for such second round of negotiations
within 10 Days of delivery following the delivery of the Dispute Notice, then
any Disputing Member may submit such Dispute to binding arbitration under this
Article 10 by notifying the other Disputing Members (an "Arbitration Notice").

         10.03    Selection of Arbitrator.

                  (a)      Any arbitration conducted under this Article 10 shall
         be heard by a sole arbitrator (the "Arbitrator") selected in accordance
         with this Section 10.03. Each Disputing Member and each proposed
         Arbitrator shall disclose to the other Disputing Members any business,
         personal or other relationship or Affiliation that may exist between
         such Disputing Member and such proposed Arbitrator, and any Disputing
         Member may disapprove of such proposed Arbitrator on the basis of such
         relationship or Affiliation.

                  (b)      The Disputing Member that submits a Dispute to
         arbitration shall request the American Arbitration Association (or, if
         such Association has ceased to exist, the principal successor thereto)
         (the "AAA ") to designate the Arbitrator. If the Arbitrator so
         designated shall die, resign or otherwise fail or becomes unable to
         serve as Arbitrator, a replacement Arbitrator shall be chosen by the
         AAA.

         10.04    Conduct of Arbitration. The Arbitrator shall expeditiously
(and, if possible, within 90 Days after the Arbitrator's selection) hear and
decide all matters concerning the Dispute. Any arbitration hearing shall be held
in New York, New York. The arbitration shall be conducted in accordance with the
then-current Commercial Arbitration Rules of the AAA (excluding rules governing
the payment of arbitration, administrative or other fees or expenses to the
Arbitrator or the AAA), to the extent that such Rules do not conflict with the
terms of this Agreement. Except as expressly provided to the contrary in this
Agreement, the Arbitrator shall have the power (a) to gather such materials,
information, testimony and evidence as it deems relevant to the dispute before
it (and each Member will provide such materials, information, testimony and
evidence requested by the Arbitrator, except to the extent any information so
requested is proprietary, subject to a third-party confidentiality restriction
or to an attorney-client or other privilege), (b) to grant injunctive relief and
enforce specific performance, and (c) fashion such relief as the Arbitrator
deems equitable and appropriate, regardless of whether such is not consistent
with the relief requested/or position taken by the Disputing Members. If it
deems necessary, the Arbitrator may propose to the Disputing Members that one or
more other experts be retained to assist it in resolving the Dispute. The
retention of such other experts shall require the unanimous consent of the
Disputing Members, which shall not be unreasonably withheld. Each Disputing
Member, the Arbitrator and any proposed expert shall disclose to the other
Disputing Members any business, personal or other relationship or Affiliation
that may exist between such Disputing Member (or the Arbitrator) and such
proposed expert; and any Disputing Member may disapprove of such proposed expert
on the basis of such relationship or Affiliation. The decision of the Arbitrator
(which shall be rendered in writing) shall be final, nonappealable and binding
upon the Disputing Members and may be enforced in any court of competent
jurisdiction; provided that the Members agree that the Arbitrator and any court
enforcing the award of the Arbitrator shall not have the right or authority to
award punitive or exemplary damages to any Disputing Member. The responsibility
for paying the costs and expenses of the

                                       32


arbitration, including compensation to the Arbitrator and any experts retained
by the Arbitrator, shall be allocated among the Disputing Members in a manner
determined by the Arbitrator to be fair and reasonable under the circumstances.
Each Disputing Member shall be responsible for the fees and expenses of its
respective counsel, consultants and witnesses, unless the Arbitrator determines
that compelling reasons exist for allocating all or a portion of such costs and
expenses to one or more other Disputing Members.

                                   ARTICLE 11
                     DISSOLUTION, WINDING-UP AND TERMINATION

         11.01    Dissolution. The Company shall dissolve and its affairs shall
be wound up on the first to occur of the following events (each a "Dissolution
Event"):

                  (a)      the unanimous consent of the Members; or

                  (b)      entry of a decree of judicial dissolution of the
         Company under Section 18-802 of the Act.

         11.02    Winding-Up and Termination.

                  (a)      On the occurrence of a Dissolution Event, the
         Management Committee shall select one Member to act as liquidator. The
         liquidator shall proceed diligently to wind up the affairs of the
         Company and make final distributions as provided herein and in the Act.
         The costs of winding up shall be borne as a Company expense. Until
         final distribution, the liquidator shall continue to operate the
         Company properties with all of the power and authority of the Members.
         The steps to be accomplished by the liquidator are as follows:

                           (i)      as promptly as possible after dissolution
                  and again after final winding up, the liquidator shall cause a
                  proper accounting to be made by a recognized firm of certified
                  public accountants of the Company's assets, liabilities, and
                  operations through the last calendar day of the month in which
                  the dissolution occurs or the final winding up is completed,
                  as applicable;

                           (ii)     the liquidator shall discharge from Company
                  funds all of the Indebtedness and other debts, liabilities and
                  obligations of the Company (including all expenses incurred in
                  winding up and any loans described in Section 4.03) or
                  otherwise make adequate provision for payment and discharge
                  thereof (including the establishment of a cash escrow fund for
                  contingent liabilities in such amount and for such term as the
                  liquidator may reasonably determine); and

                           (iii)    all remaining assets of the Company shall be
                  distributed to the Members as follows:

                                    (A)      the liquidator may sell any or all
                           Company property, including to Members, and any
                           resulting gain or loss from each sale shall

                                       33


                           be computed and allocated to the Capital Accounts of
                           the Members in accordance with the provisions of
                           Article 5;

                                    (B)      with respect to all Company
                           property that has not been sold, the fair market
                           value of that property shall be determined and the
                           Capital Accounts of the Members shall be adjusted to
                           reflect the manner in which the unrealized income,
                           gain, loss, and deduction inherent in property that
                           has not been reflected in the Capital Accounts
                           previously would be allocated among the Members if
                           there were a taxable disposition of that property for
                           the fair market value of that property on the date of
                           distribution; and

                                    (C)      Company property (including cash)
                           shall be distributed among the Members in accordance
                           with Section 5.02; and those distributions shall be
                           made by the end of the taxable year of the Company
                           during which the liquidation of the Company occurs
                           (or, if later, 90 Days after the date of the
                           liquidation).

                  (b)      The distribution of cash or property to a Member in
         accordance with the provisions of this Section 11.02 constitutes a
         complete return to the Member of its Capital Contributions and a
         complete distribution to the Member of its Membership Interest and all
         the Company's property and constitutes a compromise to which all
         Members have consented pursuant to Section 18-502(b) of the Act. To the
         extent that a Member returns funds to the Company, it has no claim
         against any other Member for those funds.

         11.03    Deficit Capital Accounts. No Member will be required to pay to
the Company, to any other Member or to any third party any deficit balance that
may exist from time to time in the Member's Capital Account.

         11.04    Certificate of Cancellation. On completion of the distribution
of Company assets as provided herein, the Members (or such other Person or
Persons as the Act may require or permit) shall file a certificate of
cancellation with the Secretary of State of Delaware, cancel any other filings
made pursuant to Section 2.05, and take such other actions as may be necessary
to terminate the existence of the Company. Upon the filing of such certificate
of cancellation, the existence of the Company shall terminate (and the Term
shall end), except as may be otherwise provided by the Act or other applicable
Law.

                                   ARTICLE 12
                               GENERAL PROVISIONS

         12.01    Offset. Whenever the Company is to pay any sum to any Member,
any amounts that Member owes the Company may be deducted from that sum before
payment.

         12.02    Notices. Except as expressly set forth to the contrary in this
Agreement, all notices, requests or consents provided for or permitted to be
given under this Agreement must be in writing and must be delivered to the
recipient in person, by courier or mail or by facsimile or

                                       34


other electronic transmission. A notice, request or consent given under this
Agreement is effective on receipt by the Member to receive it; provided,
however, that a facsimile or other electronic transmission that is transmitted
after the normal business hours of the recipient shall be deemed effective on
the next Business Day. All notices, requests and consents to be sent to a Member
must be sent to or made at the addresses given for that Member on Exhibit A or
in the instrument described in Section 3.03(b)(iv)(A)(II) or 3.04, or such other
address as that Member may specify by notice to the other Members. Any notice,
request or consent to the Company must be given to all of the Members. Whenever
any notice is required to be given by Law, the Delaware Certificate or this
Agreement, a written waiver thereof, signed by the Person entitled to notice,
whether before or after the time stated therein, shall be deemed equivalent to
the giving of such notice.

         12.03    Entire Agreement; Superseding Effect. This Agreement
constitutes the entire agreement of the Members and their Affiliates relating to
the Company and the transactions contemplated hereby and supersedes all
provisions and concepts contained in all prior contracts or agreements between
the Members or any of their Affiliates with respect to the Company and the
transactions contemplated hereby, whether oral or written, except for the
Preliminary Agreement as specifically provided herein, and for liabilities
accrued under the Preliminary Agreement.

         12.04    Press Releases. Each Member agrees that it shall not (and
shall cause its Affiliates not to), without the other Members' consent, issue a
press release or have any contact with or respond to the news media with any
sensitive or Confidential Information, except as required by securities or
similar laws applicable to a Member and its Affiliates. Any press release by a
Member or its Affiliates with respect to any sensitive or Confidential
Information shall be subject to review and approval by the other Party, which
approval shall not be unreasonably withheld.

         12.05    Effect of Waiver or Consent. Except as otherwise provided in
this Agreement, a waiver or consent, express or implied, to or of any breach or
default by any Member in the performance by that Member of its obligations with
respect to the Company is not a consent or waiver to or of any other breach or
default in the performance by that Member of the same or any other obligations
of that Member with respect to the Company. Except as otherwise provided in this
Agreement, failure on the part of a Member to complain of any act of any Member
or to declare any Member in default with respect to the Company, irrespective of
how long that failure continues, does not constitute a waiver by that Member of
its rights with respect to that default until the applicable
statute-of-limitations period has run.

         12.06    Amendment or Restatement. This Agreement or the Delaware
Certificate may be amended or restated only by a written instrument executed
(or, in the case of the Delaware Certificate, approved) by all of the Members.

         12.07    Binding Effect. Subject to the restrictions on Dispositions
set forth in this Agreement, this Agreement is binding on and shall inure to the
benefit of the Members and their respective successors and permitted assigns.

                                      xxxv


         12.08    Governing Law; Construction. This Agreement is governed by and
shall be construed in accordance with the Law of the state of Delaware,
excluding any conflict-of-laws rule or principle that might refer the governance
or the construction of this agreement to the Law of another jurisdiction. In the
event of a direct conflict between the provisions of this Agreement and any
mandatory, non-waivable provision of the Act, such provision of the Act shall
control.

NRG MIDATLANTIC LLC

By: /s/ Craig A. Mataczynski
    ------------------------------
 Name: Craig A. Mataczynski
 Title: President

MIDATLANTIC GENERATION HOLDING LLC

By: /s/ Craig A. Mataczynski
    ------------------------------
 Name: Craig A. Mataczynski
 Title: President

                                      xxxvi


                                    EXHIBIT A

Members:



                   Capital     Number of   Percentage
Member          Contribution     Units     Ownership     Parent Company
- ------          ------------     -----     ---------     --------------
                                            
NRG
MidAtlantic
LLC                $500.00        500          50%      NRG Energy, Inc.

MidAtlantic
Generation
Holding LLC        $500.00        500          50%      NRG Energy, Inc.


Designated Representatives to Management Committee:

NRG MidAtlantic LLC:    MidAtlantic Generation Holding LLC:

David Peterson          David Peterson
Leonard Bluhm           Leonard Bluhm
Craig Mataczynski       Craig Mataczynski

                                     xxxvii