Document:

<PAGE>

                                                                   Exhibit 10.45

                             AMENDED AND RESTATED
                      LIMITED LIABILITY COMPANY AGREEMENT

                                     OF

                         GE FUEL CELL SYSTEMS, L.L.C.

                                   between

                              GE MICROGEN, INC.

                                    and

                               PLUG POWER INC.

                                Dated as of

                              August 21, 2001

<PAGE>

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                           Page
                                                                           ----
<S>                                                                        <C>
ANNEX A          Definitions
ANNEX B          Representations and Warranties of the Members
ANNEX C          Intentionally Omitted

EXHIBIT 1        Members and Membership Interests
EXHIBIT 2        Allocation and Capital Account Provisions
EXHIBIT 3        Intentionally Omitted
EXHIBIT 4        GE Company Policies
EXHIBIT 5        Form of Contribution Agreement
EXHIBIT 6        Form of Promissory Note and Security Agreement
EXHIBIT 7        Form of GE Trademark and Tradename Agreement
EXHIBIT 8        Form of PP Trademark Agreement
EXHIBIT 9        Form of Distributor Agreement
</TABLE>

<PAGE>

                             AMENDED AND RESTATED
                     LIMITED LIABILITY COMPANY AGREEMENT
                                      OF
                         GE FUEL CELL SYSTEMS, L.L.C.

                     A Delaware Limited Liability Company

          THIS AMENDED AND RESTATED LIMITED LIABILITY COMPANY AGREEMENT (this
"LLC Agreement") of GE Fuel Cell Systems L.L.C. (the "Company") is made and
entered into as of the 21 day of August, 2001, by and between GE MICROGEN, INC.
(f/k/a GE ON-SITE POWER, INC.), a Delaware corporation ("GEMG") and a wholly
owned subsidiary of GENERAL ELECTRIC COMPANY ("GE"), which is controlled by the
GE POWER SYSTEMS ("GEPS") division of GE, having offices at One River Road,
Schenectady, New York 12345, and PLUG POWER, INC., (f/k/a PLUG POWER, L.L.C.), a
Delaware corporation ("PP"), having offices at 968 Albany-Shaker Road, Latham,
New York 12110 (GEMG and PP, collectively, the "Members" and each individually,
a "Member").

                             BACKGROUND STATEMENTS

          WHEREAS, GEMG and PP entered into a Limited Liability Company
Agreement which was subsequently amended and restated by an Amended and
Restated Limited Liability Company Agreement dated as of February 3, 1999,
pursuant to which GEMG and PP agreed to join together to operate a limited
liability company under the laws of the State of Delaware, for the purposes and
upon the terms and conditions set forth in such agreement, with GEMG owning 75%
of the Membership Interest of the Company and PP owning 25% of such Membership
Interest;

          WHEREAS, (i) PP and GEMG have agreed to amend and restate the LLC
Agreement to shift an additional 15% of the Membership Interest of the Company
from GEMG to PP, (ii) PP has agreed to issue to GE Power Systems Equities,
Inc., an Affiliate of GEMG, an Option to Purchase Common Stock of PP, dated the
date hereof, subject to the terms set forth therein, and (ii) the Company and
PP have agreed to an expansion of the Company's distribution rights with
respect to PP's Products, pursuant to an Amended and Restated Distributor
Agreement (the "Distributor Agreement") dated the date hereof and between PP
and the Company ;

          WHEREAS, immediately following the amendment and restatement of this
LLC Agreement, GEMG and PP will have Membership Interests in the Company of 60%
and 40%, respectively.

          NOW THEREFORE, in consideration of the mutual covenants and agreements
hereinunder set forth, and other good and valuable consideration, the receipt
of which is hereby acknowledged, the parties hereby agree as follows:

<PAGE>

                                  ARTICLE I
                                 DEFINITIONS

     Section 1.1.   Definitions.  Capitalized terms used in this LLC Agreement
                    -----------
shall have the meanings specified herein or in Annex A.

                                  ARTICLE II
                                 ORGANIZATION

     Section 2.1.   Formation; Name.  The Members hereby enter into this LLC
                    ---------------
Agreement for the purpose of amending the rights and obligations of the
Members. The name of the Company shall be GE Fuel Cell Systems, L.L.C.

     Section 2.2.   Certificate of Formation; Foreign Qualification.  GEMG has
                    -----------------------------------------------
caused to be filed for record the Certificate of Formation of the Company in
the offices of the Secretary of State of the State of Delaware in accordance
with [sec] 18-201 of the Act. GEMG shall file such amendments and other
documents necessary to give effect to this LLC Agreement. Prior to the Company's
conducting business in any jurisdiction other than the State of Delaware, the
Members shall cause the Company to comply, to the extent procedures are
available and those matters are reasonably within the control of the Members,
with all requirements necessary to qualify the Company as a foreign limited
liability company in that jurisdiction. Each Member shall execute,
acknowledge, swear to, and deliver all certificates and other instruments
conforming with this LLC 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.

     Section 2.3.   No State Law Partnership; Liability to Third Parties. The
                    ----------------------------------------------------
Members intend that the Company not be a partnership (including, without
limitation, a limited partnership), 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 that this LLC Agreement not be construed otherwise. No Member
shall be liable for the debts, obligations or liabilities of the Company,
including under a judgment, decree or order of a court, except for the
obligation to fund the working capital needs of the Company as set forth in
Article V of this LLC Agreement.

     Section 2.4.   Registered Office.  The registered office and principal
                    -----------------
place of business of the Company shall be located at 1 River Road, Schenectady,
New York 12345, and the Company will also operate at such other places as it
may determine.

     Section 2.5.   Representations and Warranties of the Members. Each Member
                    ---------------------------------------------
represents and warrants to the other Member, as of the date of execution of
this LLC Agreement, as set forth in Annex B, except as set forth in the
applicable Disclosure Schedule.

                                 ARTICLE III
                     PURPOSES AND POWERS; TERM OF COMPANY

     Section 3.1.   Purposes and Powers.  The Company has been formed for the
                    -------------------
sole purpose of marketing and selling (as a distributor), Products in the
Territory and performing Services in the Territory. The Company's business
shall be limited to that which is described in this Section 3.1 and in Section
3.2 and any incidental activities. In furtherance of such business, the
Company shall have all of the powers

                                      3

<PAGE>

granted to a limited liability company under the laws of the State of Delaware,
including, without limitation, the powers specifically enumerated in [sec]
18-106 of the Act.

     Section 3.2.   Scope.  The Company shall, in accordance with the terms of
                    -----
the Distributor Agreement, purchase, from PP, Products and such other PP
products that the Members mutually agree to be marketed and sold ("Other
Products"), and may purchase Services from PP, GE and third parties as needed,
in order to provide high quality Products, Other Products and Services in the
Territory. The Company shall hire or contract necessary manpower for
distributing Products and Other Products and for providing Services, in
accordance with the Distributor Agreement.

     Section 3.3.   Term.  The Company shall continue until dissolved or
                    ----
terminated pursuant to law or the provisions of this LLC Agreement.

                                  ARTICLE IV
           MEMBERSHIP, DISPOSITIONS OF INTERESTS AND BANKRUPT MEMBER

     Section 4.1.   Members.  As of the close of business on August __, 2001,
                    -------
the Members' ownership of the Membership Interest of the Company shall be
modified such that GEMG has 60% of the Membership Interests of the Company and
PP has 40% of the Membership Interests of the Company. The Members and their
respective Membership Interests immediately following such modification shall
be as set forth on Exhibit 1.

     Section 4.2.   Additional Members.  Additional Persons may be admitted to
                    ------------------
the Company as Members and Membership Interests may be created and issued to
those Persons with the approval of five (5) members of the Committee on such
terms and conditions as the Committee may determine at the time of admission.
The terms of admission or issuance must specify the Capital Contribution and
Membership Interest applicable thereto and may provide for the creation of
different classes or groups of Members having different rights, powers and
duties. Any such admission shall be effective only after the new Member has
executed and delivered to the Committee a document including the new Member's
notice address and its agreement to be bound by this LLC Agreement, with
representations and warranties effective as of the date of such new Member's
execution of such document. Upon the admission of new Members, Exhibits 1 and
2 shall be amended by the Committee to reflect the new Members, Membership
Interests and allocation and capital account provisions.

     Section 4.3.   Withdrawal.  Except as set forth in this LLC Agreement, a
                    ----------
Member does not have the right or power to withdraw from the Company as a
Member.

     Section 4.4.   Disposition of a Membership Interest.
                    ------------------------------------

            (a)     Prohibition. No Membership Interest, or any right, title or
                    -----------
interest in or to such Membership Interest, now or hereafter owned, held or
acquired by any Member shall be Disposed of voluntarily, involuntarily, by
operation of law, with or without consideration, or otherwise except in
accordance with the provisions of this Section 4.4. Any Disposition which does
not comply with the provisions of this Section 4.4 shall be void ab initio and
                                                                 -- ------
the Company shall not give effect to such attempted Disposition in its records.

            (b)     Affiliates; Sale of Business.  Any Member may Dispose of all
                    ----------------------------
(but not less than all) of its right, title and interest in and to a Membership
Interest as follows: (i) to an Affiliate of such Member,

                                      4

<PAGE>

provided that such Affiliate is not a GEPS Competitor, (ii) by GEMG to the
purchaser, directly or indirectly, of GEMG or GEPS (or substantially all of the
assets of GEMG or GEPS), or (iii) subject to the provisions of clause (c)
below, by PP to the purchaser, directly or indirectly, of PP (or substantially
all of the assets of PP); provided, however, that any Disposition pursuant to
                          --------  -------
this clause (b) shall be made in compliance with the requirements of clauses
(d), (e) and (f). GEMG and PP shall remain responsible for the performance of
this LLC Agreement by each Affiliate of such party to which a Membership
Interest is transferred pursuant to this Section 4.4(b). If any Affiliate to
which a Membership Interest is transferred pursuant to this Section 4.4 ceases
to be an Affiliate of the Member from which it acquired such Membership
Interest, such Person shall re-convey such Membership Interest to such
transferring Member promptly upon such Person ceasing to be such an Affiliate
(unless such Person ceases to be such an Affiliate in connection with a
transfer otherwise permitted by this Section 4.4).

            (c)     GEMG Option to Purchase.
                    -----------------------

                    (i)     Notwithstanding the provisions of Section 4.4(b), if
there is either (a) a Change of Control with respect to PP or (b) a proposal to
Dispose, directly or indirectly, of all or any portion of PP's interest in the
Company (in either case, a "PP Transfer"), then PP shall provide prompt written
notice (the "Transfer Notice") to GEMG. The Transfer Notice shall identify the
nature of the Change of Control or the Person with which the PP Transfer is
proposed to be consummated and all other material terms of the proposed
transaction, including the consideration to be paid in connection with the PP
Transfer, and, in the case of an offer in which the consideration payable in
connection with the PP Transfer consists in whole or in part of consideration
other than cash, such information relating to such other consideration as is
reasonably necessary for GEMG to be informed of all material facts relating to
such consideration.

                    (ii)    GEMG shall have the right and option, for a period
of 30 days after the date on which all information required to be provided to
GEMG has been so provided (the "Notice Period"), to deliver a notice to PP (the
"Purchase Notice") of GEMG's intention to purchase that portion of PP's
interest in the Company that PP proposes to transfer (the "PP Interest"). The
consideration to be paid by GEMG for the PP Interest shall be (a) in the case
of a Change of Control, the Fair Market Value of the PP Interest, or (b) in the
case of a PP Transfer, cash in an amount equal to the price to be paid for the
PP Interest by the proposed purchaser thereof. Notwithstanding the preceding
sentence, if the consideration to be paid for the PP Interest is wholly or
partially non-cash consideration, then GEMG shall pay cash in lieu of the
non-cash consideration, in an amount equal to the fair market value thereof,
such amount to be determined by good faith negotiations between the Members
(and, in the absence of agreement, using a procedure similar to that used to
determine the Fair Market Value of an Interest in the Company). Delivery of
the Purchase Notice by GEMG shall constitute an irrevocable election by GEMG to
purchase the PP Interest for the consideration and on the other terms and
conditions set forth in the proposed transaction and in this Section 4.4(c).

                    (iii)   The transfer of the PP Interest to GEMG shall be
consummated as soon as practicable following the giving of the Purchase Notice
by GEMG, but in no event more than 30 days thereafter (subject to any extension
necessary to comply with any applicable regulatory requirement). If at the end
of the Notice Period GEMG shall not have given a Purchase Notice with respect
to the PP Interest, GEMG shall be deemed to have waived its rights under this
Section 4.4(c) with respect to the Disposition contemplated by the Transfer
Notice. If GEMG rejects the Transfer Notice, or is deemed to have waived its
rights as set forth in the preceding sentence, PP shall have the right, for a
period of 180 days following

                                      5

<PAGE>

such rejection or waiver (subject to any extension necessary to comply with any
applicable regulatory requirement), to dispose of the PP Interest to the
proposed transferee identified in the Transfer Notice and on terms no more
favorable to the proposed transferee than are set forth in the Transfer Notice.
If, at the end of the 180-day period following the rejection or waiver, PP has
not completed the sale of the PP Interest, such Disposition may not occur and PP
and the PP Interest shall again be subject to the restrictions contained in this
Section 4.4(c).

                    (iv)    The provisions of this Section 4.4(c) shall not
apply in the case of a public offering of securities of PP.

            (d)     Delivery to the Company. The Company shall not recognize
                    -----------------------
for any purpose any purported Disposition of a Membership Interest unless and
until all Applicable Laws, including securities laws, with respect to the
Disposition have been complied with and the other applicable provisions of this
Section 4.4 have been satisfied and the Committee has received, on behalf of
the Company, a document (i) executed by both the Member effecting the
Disposition and the Person to which the Membership Interest is transferred,
(ii) including the notice address of any Person to be admitted to the Company
as a Substitute Member and such Person's agreement to be bound by this LLC
Agreement in respect of the Membership Interest being obtained, (iii) setting
forth the Membership Interest after the Disposition of the Member effecting the
Disposition and the Person to which the Membership Interest is transferred, and
(iv) containing a warranty and representation that the Disposition was made in
accordance with all Applicable Laws and regulations. Each Disposition and, if
applicable, admission complying with the provisions of this Section 4.4(d)
shall be effective as of the first day of the calendar month immediately
succeeding the month in which the requirements of this Section 4.4 have been
met.

            (e)     Status as a Member.  Upon compliance with the other
                    ------------------
applicable requirements of this Section 4.4, the transferee shall be deemed a
"Member" for the purposes of this LLC Agreement and a party to this LLC
Agreement, and shall have the rights and be subject to the obligations of a
Member hereunder and a party hereto with respect to the Membership Interest
held by such transferee.

            (f)     Costs. The Member effecting a Disposition and any Person
                    -----
admitted as a Substitute Member in connection therewith shall pay, or reimburse
the Company for, all reasonable costs incurred by the Company in connection
with the Disposition (including, without limitation, any legal fees incurred in
connection with the consideration of the implications thereof under applicable
securities laws, the Code and other laws) on or before the tenth day after the
receipt by that Person of the Company's invoice for the amount due.

                                  ARTICLE V
                            CAPITAL CONTRIBUTIONS

     Section 5.1.   Initial Contributions.  GEMG has previously contributed
                    ---------------------
$10,000 cash to the capital of the Company.

     Section 5.2.   Additional Members.  Each Additional Member shall make the
                    ------------------
Capital Contribution determined by the Members to be made by such Additional
Member at the time such Additional Member is admitted as a Member of the
Company in accordance with Section 4.2 of this LLC Agreement.

                                      6

<PAGE>

     Section 5.3.   Guarantees.  Should guarantees be required by customers to
                    ----------
support the contracts entered into by the Company, then the Company shall, to
the extent reasonably possible, arrange such guarantees with its own resources.
Where necessary, and subject to mutual written agreement on a case by case
basis, the Members may, but shall not be obligated to, guarantee the contracts
in proportion to their respective Membership Interests in the Company.

     Section 5.4.   Return of Contributions.  No Member is entitled to the
                    -----------------------
return of any part of its Capital Contributions or to interest in respect of
either its Capital Account or its Capital Contributions. An unreturned Capital
Contribution is not a liability of the Company or of any Member.

     Section 5.5.   Member Affiliate Loans.
                    ----------------------

            (a)     GEMG shall arrange for its Affiliate, GE, to provide, during
the period ending 12/31/2005, in the form of loans to the Company, capital as
required to fund the Company's operations, in accordance with the Distributor
Agreement, in an amount not to exceed $8,000,000. The loans shall be made to the
Company pursuant to the terms of a non-recourse promissory note substantially in
the form attached to this LLC Agreement as Exhibit 6. The loans referred to in
this subsection (a) shall be conditioned upon (A) PP meeting all of its
obligations as set forth in the Distributor Agreement, and (B) PP providing
Company with Products which are, in the reasonable judgment of GEMG, materially
competitive with alternative PEM Fuel Cell-Powered Generator Sets on the basis
of cost of energy, output, fuel flexibility, combined heat and power capability,
first cost, lifecycle cost, reliability, emissions and application, when viewed
in the aggregate.

            (b)     In the event that further capital, in addition to that
referred to in subsection (a) above, is required by the Company in order to
meet any obligation or pay any liability of the Company, the Company may borrow
such required capital from any Person, including any Member or any Affiliate of
a Member, on such commercially reasonable terms as the Committee may determine;
provided, that the Company shall offer to the Members the opportunity to lend
such funds on such commercially reasonable terms pro rata in proportion to
their respective Membership Interests. Any such transactions with Members or
their Affiliates are subject to Section 7.1(b).

                                  ARTICLE VI
             PROFITS, LOSSES, ACCOUNTING, TAXES AND DISTRIBUTIONS

     Section 6.1.   Allocation of Profits and Losses.  Except as otherwise
                    --------------------------------
provided in and subject to the provisions of Exhibit 2 to this LLC Agreement,
Profits (including items of income and gain) and Losses (including items of
expense, deduction and loss) of the Company for each Fiscal Year shall be
determined as of the end of the Fiscal Year and shall be allocated to each
Member pro rata in accordance with its Membership Interest.

     Section 6.2.   Books; Fiscal Year.
                    ------------------

            (a)     The Company shall maintain or cause to be maintained proper
and complete books and records in which shall be entered fully and accurately
all transactions and other matters relating to the Company's business in the
detail and completeness customary and usual for businesses of the type engaged
in by the Company. The Company's financial statements shall be kept on the
accrual basis and in accordance with GE General Accounting Policies (as they
may be modified from time to time) and GAAP, consistently applied. The
Company's financial statements shall be audited annually by independent public

                                      7

<PAGE>

accountants selected by the Committee. The fact that such independent public
accountants may audit the financial statements of one or more of the Members or
their Affiliates shall not disqualify such accountants from auditing the
Company's financial statements.

            (b)     The fiscal year of the Company (the "Fiscal Year") shall be
the calendar year (or such other 12-month period as the Committee may select)
or, if applicable, that shorter period within the calendar year (or such other
period) during which the Company had legal existence.

            (c)     The Company shall prepare and distribute to each Member
unaudited quarterly financial statements (including, without limitation,
current Capital Account balances), prepared in accordance with Section 6.2(a).
Such quarterly financial statements shall be distributed to the Members within
a time that will permit, and shall provide such information concerning the
operations of the Company as may be required for, the Members to prepare and
timely file with the Securities and Exchange Commission their quarterly
financial statements.

            (d)     At a minimum, the Company shall keep at its principal
executive office such books and records as may be required by the Act and such
other books and records as are customary and usual for businesses of the type
engaged in by the Company.

            (e)     Each Member or its duly authorized representatives shall
have the right, during normal business hours and in accordance with the Act, to
inspect and copy the Company's books and records at the requesting Member's
expense.

     Section 6.3.   Capital Accounts.
                    ----------------

            (a)     There shall be maintained a Capital Account for each Member
in accordance with this Section 6.3 and the principles set forth in Exhibit 2
attached to this LLC Agreement. The amount of cash or the fair market value of
property contributed to the Company by each Member (including the property
deemed contributed to the Company by PP pursuant to Section 3 of the
Contribution Agreement), net of liabilities assumed by the Company from such
Member or to which the contributed property is subject, shall be credited to
such Member's Capital Account, and from time to time, but not less often than
at the end of each Fiscal Year, the allocations to each Member of Profits and
Losses (including any special allocations made pursuant to the provisions of
Exhibit 2) and the fair market value of property distributed to each Member,
net of liabilities assumed by the Member or to which the property distributed
is subject, shall be credited or debited to such Member's Capital Account. The
determination of Members' Capital Accounts, and any adjustments thereto, shall
be made consistent with tax accounting and other principles set forth in
Section 704(b) of the Code and the applicable regulations thereunder.

            (b)     Except as otherwise specifically provided in this LLC
Agreement or any Ancillary Agreement, no Member shall be required to make any
further contribution to the capital of the Company to restore a loss, to
discharge any liability of the Company or for any other purpose, nor shall any
Member personally be liable for any liabilities of the Company or of any other
Member, except as provided by law.

            (c)     Immediately following a permitted transfer of any Membership
Interest, the Capital Account of the transferee Member shall equal the Capital
Account of the transferor Member attributable to the transferred Membership
Interest and such Capital Account shall not be adjusted to reflect any basis
adjustment under Section 743 of the Code.

                                      8

<PAGE>

            (d)     For purposes of computing the amount of any item of income,
gain, deduction or loss to be reflected in the Members' Capital Accounts, the
determination, recognition and classification of any such item shall be the
same as its determination, recognition and classification for federal income
tax purposes, taking into account any adjustments required pursuant to Section
704(b) of the Code and the applicable regulations thereunder as more fully
described in Exhibit 2 attached hereto.

     Section 6.4.   Tax Returns.  The Members, through the Committee, shall
                    -----------
cause to be prepared and filed all necessary federal and state income tax
returns for the Company. Such tax returns shall be prepared by the Tax Matters
Partner, as defined in Section 6.5. In preparing the tax returns for the
Company, the Tax Matters Partner shall at all times act reasonably and in good
faith taking into account the interests of all Members. The Tax Matters
Partner shall permit any Member upon request reasonable opportunity to review
the content of all tax returns at least 45 days prior to filing. The Tax
Matters Partner shall be reimbursed, at cost, by the Company for any and all
expenses incurred on behalf of the Company by the Tax Matters Partner while
acting in its capacity as Tax Matters Partner. Each Member shall furnish to
the Committee all pertinent information in its possession relating to Company
operations that is necessary to enable the Company's income tax returns to be
prepared and filed. Neither the Company, the Committee nor any Member may 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 LLC
Agreement shall be construed to sanction or approve such an election.

     Section 6.5.   Tax Matters Partner.  GEMG shall be the "Tax Matters
                    -------------------
Partner" of the Company within the meaning of Section 6231(a)(7) of the Code
and shall act in any similar capacity under applicable state, local or foreign
law (in such capacity, the "Tax Matters Partner"). The Tax Matters Partner
shall take such action as may be reasonably necessary to constitute each of the
other Members a "notice partner" within the meaning of Section 6231(a)(8) of
the Code. The Tax Matters Partner shall notify the other Members of all
material matters that come to its attention in its capacity as Tax Matters
Partner. The Tax Matters Partner will give the other Members not less than 15
days' prior notice as to any action to be taken or of any decision not to take
action with respect to any such material matter. In acting in its capacity as
Tax Matters Partner, GEMG shall at all times act reasonably and in good faith,
taking into account the interests of all Members.

     Section 6.6.   Distributions.  Except to the extent prohibited by
                    -------------
Applicable Law and provided that the Company has positive cash flow from
operations (after repayment of amounts due under loans made to the Company by a
Member or an Affiliate of a Member, including, without limitation, as provided
for in the Promissory Note) and the ability to continue its business without
incurring additional debts, the Members, through the Committee, shall cause the
Company to distribute available cash to each Member, on or prior to March 31 of
each year, pro rata in proportion to its Membership Interest.

     Section 6.7.   Withdrawals. No Member shall be entitled to make
                    -----------
withdrawals from its Capital Account.

                                 ARTICLE VII
                       MANAGEMENT; CONDUCT OF BUSINESS

     Section 7.1.   Management by Committee.
                    -----------------------

                                      9

<PAGE>

            (a)     The powers of the Company shall be exercised by or under the
authority of, and the business and affairs of the Company shall be managed
under the direction of, the Members. In managing the business and affairs of
the Company and exercising its power, the Members shall act through their
representatives on the Committee as described in Section 7.2. Any Member who
binds or obligates the Company for any debt or liability or causes the Company
to act, except in accordance with the immediately preceding sentence, shall be
liable to the Company for any such debt, liability or act. Decisions or
actions taken by Members in accordance with this LLC Agreement (whether through
the Committee or otherwise) shall constitute decisions or actions by the
Company and shall be binding on each Member (in its capacity as such).

            (b)     Except as hereinafter provided, all decisions and actions of
the Company shall require the approval of a majority of the Committee members
meeting in accordance with Article VIII. Notwithstanding the foregoing
provisions of this Article VII, the following actions (collectively,
"Supermajority Transactions") shall require the consent of five (5) Committee
members:

                    (i)     any merger/acquisition or sale or purchase of any
material assets which are greater than 20% of the fair value of the total assets
of the Company;

                    (ii)    any transaction with a Member or its Affiliates,
except as expressly provided for in this LLC Agreement or in the Ancillary
Agreements;

                    (iii)   any amendment to the Company's Certificate of
Formation, this LLC Agreement, or any of the Ancillary Agreements;

                    (iv)    the entering into of any contract valued at more
than $10 million; and

                    (v)     the issuance or repurchase of Membership Interests
or admission of Additional Members in accordance with Section 4.2.

     Section 7.2.   Establishment of the Committee.
                    ------------------------------

            (a)     GEMG and PP hereby establish the Committee. The Committee
shall consist of seven members, three appointed by each of GEMG and PP and a
seventh member, who shall be the Company's President and who shall be selected
in accordance with Section 7.3(a) and treated for all purposes of this LLC
Agreement as being appointed to the Committee by GEMG. At any time the Company
does not have a President, GEMG may designate the seventh member, who shall
serve until a President is appointed in accordance with Section 7.3 of this LLC
Agreement. The Chairman of the Committee shall be designated by GEMG from
among the members of the Committee appointed by GEMG, and the Vice-Chairman of
the Committee shall be designated by PP from among the members of the Committee
appointed by PP. The members of the Committee shall serve at the pleasure and
on behalf of the party that appointed such member, until such member resigns or
is removed by the party that appointed such member. All such members shall be
officers, directors or employees of a Member or the Company. A member of the
Committee may be removed, with or without cause, only by the party that
appointed such member.

            (b) The Members shall act through their representatives on the
Committee in the manner set forth below. Except as described in Section
7.1(b), decisions by the Committee shall require majority approval of a quorum
of the Committee members.

                                      10

<PAGE>

            (c)     Each Member shall designate its representatives on the
Committee to the other Members in writing, and such designation shall remain in
effect until the revocation of such designation has been made in writing. Such
writing will be signed by the chief executive officer of PP in the case of PP
and by the president of GEMG in the case of GEMG.

     Section 7.3.   Officers.
                    --------

            (a)     The Company shall hire its President in the following
manner: GEMG shall present to PP a slate of 3 qualified nominees for President,
unless the parties mutually agree to a slate of less nominees. PP shall have the
right to select from GEMG's slate of nominees one individual to serve as
President for the compensation and on the other terms and conditions designated
by GEMG. The President shall be vested by the Committee with all necessary
powers to conduct the normal business of the Company. The President will be
removed at the request of GEMG with or without cause at any time. Except as
otherwise agreed to by GEMG and PP, other primary management functions of the
Company shall be assigned by the President.

            (b)     The Committee may appoint such other officers as it may
determine from time to time. Except as otherwise agreed, each officer of the
Company shall hold office at the pleasure of the Committee, and the Committee
may remove any officer at any time, with or without cause. If appointed by the
Committee, the officers shall have the duties assigned to them by the Committee.
 In the case of a Chief Financial Officer, a Chief Operating Officer and/or a
Chief Marketing Officer, as those offices may exist from time to time, GEMG
shall present to PP a slate of 3 qualified nominees for such office, as the case
may be, unless the parties mutually agree to a slate of less nominees for a
particular office. PP shall have the right to select from GEMG's slate of
nominees one individual to serve for each office in accordance with this Section
7.3.

     Section 7.4.   Conduct of Business.  Except as otherwise specifically
                    -------------------
provided in this LLC Agreement, the Committee shall have the authority to, and
shall, conduct the affairs of the Company on behalf of, and as representatives
of, the Members. The Committee shall conduct the Company's business and affairs
pursuant to, and in accordance with, the goals established by the Committee.
The Committee shall review the goals not less frequently than annually and shall
establish goals for the next Fiscal Year not later than three months prior to
the commencement of each Fiscal Year. The Committee may delegate to such
officers as it may appoint from time to time the authority to conduct the
day-to-day operations of the Company's business. The Company hereby adopts, and
the Committee shall cause the Company to be operated in accordance with, the GE
Company Policies, attached hereto as Exhibit 4, and policies consistent with
Applicable Laws, including, but not limited to U.S. export control laws. In
carrying out their responsibilities, the Committee members and officers of the
Company shall be indemnified by the Company to the fullest extent allowed by
Delaware law.

     Section 7.5.   Conflicts of Interest.  Subject to the other express
                    ---------------------
provisions of this LLC Agreement, particularly Section 9.3, each Member and its
respective Committee members and Affiliates may engage in and possess interests
in other business ventures of any and every type and description, independently
or with others, including ones in competition with the Company, with no
obligation to offer to the Company or any other Member the right to participate
in such other business ventures. Subject to Section 7.1(b)(ii) of this LLC
Agreement and the provisions of any Ancillary Agreement, the Company may
transact business with any Member, their Affiliates and their respective
directors, officers, employees and

                                      11

<PAGE>

agents, provided the terms of those transactions are substantially comparable
to those the Company could obtain from unrelated third parties.

                                  ARTICLE VIII
                            MEETINGS OF THE COMMITTEE

     Section 8.1.   Regular and Special Meetings.  Regular meetings of the
                    ----------------------------
Committee shall be held at such times and places, within or without the State of
Delaware, as the Committee may from time to time determine. Special meetings of
the Committee may be called by any four Committee Members, and shall be held at
such times and places, within or without the State of Delaware, as may be
specified in such call.

     Section 8.2.   Notices of Meetings.  Notice of the time and place of each
                    -------------------
meeting of the Committee shall be given to each Committee member by the person
or persons calling such meeting. Such notice need not specify the purpose or
purposes of the meeting (unless a Supermajority Transaction is proposed for
consideration) and may be given in any manner or method and at such time so that
the Committee member receiving it may have reasonable opportunity to participate
in the meeting. The giving of notice shall be deemed to have been waived by any
Committee member who shall participate in such meeting and may be waived, in
writing, by any Committee member either before or after such meeting.

     Section 8.3.   Quorum.  Six Committee members shall constitute a quorum for
                    ------
the transaction of business by the Committee. Whenever less than a quorum is
present at the time and place appointed for any meeting of the Committee, a
majority of those present may adjourn the meeting from time to time, until a
quorum shall be present.

     Section 8.4.   Action by Written Consent or Telephone Conference.  Any
                    -------------------------------------------------
action permitted or required by the Act or this LLC Agreement to be taken at a
meeting of the Committee may be taken without a meeting if a consent in writing,
setting forth the action to be taken, is signed by all the members of the
Committee. Such consent shall have the same force and effect as a unanimous
vote at a meeting and may be stated as such in any document or instrument filed
with the Secretary of State of Delaware, and the execution of such consent shall
constitute attendance or presence in person at a meeting of the Committee.
Subject to the requirements of the Act or this LLC Agreement, members of the
Committee may participate in and hold a meeting of the Committee by means of a
conference telephone or similar communications equipment by means of which all
participants can hear each other, and participation in such meeting shall
constitute attendance and presence in person at such meeting, except where a
person 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.

     Section 8.5.   Substitute Committee Members.  If a Committee member is
                    ----------------------------
unavailable for any particular Committee meeting, the Member that appointed such
Committee member shall have the right to appoint a substitute Committee member
for such meeting.

                                  ARTICLE IX
                              ADDITIONAL COVENANTS

     Section 9.1.   Public Announcements, Etc.  The Members shall consult with
                    -------------------------
each other before issuing any press release or making any public statement with
respect to this LLC Agreement or the organization of the Company and, except as
may be required by Applicable Law or any national or

                                      12

<PAGE>

international securities exchange, will not issue any such press release or make
any such public statement without the consent of both Members. Notwithstanding
the foregoing, no provision of this LLC Agreement shall relieve a Member from
any of its obligations under Section 9.2.

     Section 9.2.   Confidentiality.  The Members agree to follow, and to cause
                    ---------------
the Company to follow, the following requirements regarding
confidentiality:

            (a)     Each Member and the Company (each, for purposes of this
Section 9.2, a "Party") expects to furnish to one or more of the other Parties
certain confidential information which will constitute trade secrets or other
proprietary business or technical information belonging to the disclosing Party
(including, but not limited to, components, processes, financial information,
drawings, specifications and other data, whether in written, printed, oral or
other form) and will be marked "Confidential" or "Proprietary" (such information
is hereinafter referred to as "Confidential Information") at the time it is
disclosed. Oral information which is confidential or proprietary shall be
reduced to writing by the disclosing Party within ten (10) working days after
disclosure, which writing shall specifically reference the date of disclosure
and otherwise conform to the requirements of this paragraph. Any information
which is disclosed in any other manner shall be deemed to be non-confidential.
The receiving Party shall not disclose Confidential Information to anyone except
its employees who have a need to know such Confidential Information in order to
perform their work and shall inform such individuals of the confidential nature
of the Confidential Information. Subject to the provisions of subsection (b),
below, the receiving Party shall use the Confidential Information only for the
purpose of such work and shall use efforts to protect the confidentiality of
such Confidential Information commensurate with those which it employs for the
protection of its own confidential information, but it shall not be liable for
unauthorized revelations of such Confidential Information which occur in spite
of such efforts.

            (b)     Notwithstanding the provisions of subsection (a) above, (i)
the receiving Party shall not be subject to any restriction hereunder with
respect to any part of such Confidential Information which appears in issued
patents or publications, which is known or becomes generally known to the
relevant public through no fault of the receiving Party, which is independently
generated by the receiving Party without use of the Confidential Information,
which is furnished to others by the disclosing Party without restriction on
disclosure, which was or becomes known to the receiving Party through other
sources free of any confidentiality restriction, which must be disclosed by
requirements of law or valid legal or regulatory process, in which case the
Party intending to make such disclosure shall notify the Party which designated
the material as confidential in advance of any such disclosure and reasonably
cooperate with any attempt to maintain the confidentiality of such materials;
and (ii) any and all restrictions with respect to Confidential Information
provided hereunder  shall expire three (3) years after the date that such
Confidential Information first is disclosed to the receiving Party.

            (c)     When one Party no longer desires to use the Confidential
Information of another Party, it shall return to the other Party any such
Confidential Information and shall destroy all copies of such Confidential
Information with the exception of one copy which may be retained exclusively for
the purpose of documenting the disclosures made hereunder.

            (d)     The Company shall restrict access to any Confidential
Information made available or disclosed by a Member to the Company hereunder
only to those employees of the Company with a need to know such information in
performance of their jobs with the Company.

                                      13

<PAGE>

     Section 9.3.   Protection of Business.  In consideration of the respective
                    ----------------------
benefits of this LLC Agreement to the Members, and subject to the terms and
conditions of the Distributor Agreement, the Members hereby covenant and agree
that during the term of the Distributor Agreement:

            (a)     PP and its Affiliates shall not market, distribute, sell,
lease or finance Products or PEM Fuel Cell-Powered Generator Sets, components,
replacement parts, upgrades, accessories or improvements that compete with the
Products, market or sell the output of PEM Fuel Cell-Powered Generator Sets that
compete with the Products, or provide Services to Customers in the Territory,
directly or indirectly, except that (i) PP may, for the sole purpose of Product
testing and research and development, deal directly with and provide Product and
Services to governmental entities (e.g., State of New York, NYSERDA, U.S.
Department of Energy), (ii) PP may, for the sole purpose of Product testing and
research and development, deal directly with, sell Product to, and provide
Services to, quasi-public entities (e.g., Long Island Power Authority, Los
Angeles Department of Water and Power) provided that PP and the Company mutually
agree to allow PP to enter into such transactions and PP and the Company agree
on appropriate compensation to GEMG or its Affiliate, and (iii) if PP and the
Company mutually agree that a specific market opportunity (e.g., applications,
geographic market) may be better served by a distributor (including PP) other
than the Company, PP and the Company will negotiate in good faith to determine
the compensation that should be paid to GEMG or its Affiliate for the Company
forgoing its exclusive distribution rights to that opportunity.

            (b)     GEMG (i) shall utilize PP as its sole supplier of PEM Fuel
Cell-Powered Generator Sets, components, replacement parts, upgrades,
accessories, and improvements therefor (in each case, except as designed for use
in propulsion applications), and (ii) will not, directly or indirectly, Sell PEM
Fuel Cell-Powered Generator Sets manufactured by or on behalf of any Person
other than Supplier, nor the output thereof, nor any components, replacement
parts, upgrades, accessories or improvements therefor (in each case, except as
designed for use in propulsion applications).

     Section 9.4.   Promotion of the Company.  GEMG and PP shall use all
                    ------------------------
reasonable efforts to (a) promote the use of the Products and Services in the
Territory, (b) support the Company in obtaining government authorizations as may
be necessary or appropriate to operate the Company, and (c) make available
support in conducting the day to day operations of the Company, including but
not limited to administration, sales support, warehousing administration, and
financial planning and budgeting; provided, that all such efforts shall be in
accordance with this LLC Agreement and the Ancillary Agreements. This Section
will not be construed to expand either party's obligations in respect of matters
specifically addressed elsewhere in this LLC Agreement or in any Ancillary
Agreement.

     Section 9.5.   Ethical and Environmental Standards.  Each Member shall
                    -----------------------------------
ensure that all actions on its behalf in connection with the Company are in
compliance with the highest ethical standards. In particular, each party shall
ensure that no money or anything of value (such as a bribe or kickback) is
offered, given or authorized to be given, directly or indirectly, to a customer
or government official to influence or reward action or inaction with regard to
the Company. GEMG shall have the right to cause an environmental baseline study
to be prepared, at the Company's cost, for any facilities to be used by the
Company.

     Section 9.6.   Tax Matters.  The Members agree to cooperate to structure
                    -----------
the operation of the Company in a manner which enables each party and the
Company to optimize its tax position with respect to the joint venture. If
during the course of the operation of the Company, United States tax laws change
so

                                      14

<PAGE>

as to have a significant impact on either of the Members or the Company, the
Members agree to cooperate to make such mutually acceptable changes to this LLC
Agreement insofar as allowed under law as will enable the affected party to
optimize its tax position resulting from the change in the law.

     Section 9.7.   Other Covenants.
                    ---------------

            (a)     PP will train sufficient personnel in the Company, PP, GEMG
and GEMG's Affiliates as may be needed in the conduct of the Company's
operations, at terms and prices mutually agreed to between PP and the
Company.

            (b)     The Company shall use its best efforts to hire marketing,
sales, and service personnel and/or contract with third parties to market and
sell Products in the manner that its Affiliates market and sell similar
products, and to provide Services to ensure a level of customer service
consistent with that provided for other GE-branded products, taking into
consideration the sales volumes of Products .

            (c)     Each Member's patents, trademarks, trade names, inventions,
copyrights, know-how, trade secrets, licensed rights or other intellectual
property rights ("Intellectual Property") now in existence or hereafter lawfully
acquired or developed by such Member shall not be deemed to be transferred to
any other Member or to the Company by virtue of this LLC Agreement.
Notwithstanding the foregoing provisions of this Section 9.7(c), GEMG hereby
grants to PP a perpetual non-exclusive, non-transferable, irrevocable,
royalty-free, fully paid up license to use Product information regarding market
size, demographics, demand, segmentation, design parameters sought by the
market, and contact information (names, addresses, telephone numbers) for
customers, resellers, service providers, code bodies, and similar information
acquired or developed by the Company under this LLC Agreement.

     Section 9.8.   Further Assurances.  Subject to the terms and conditions of
                    ------------------
this LLC Agreement, each Member shall use all reasonable efforts to take, or
cause to be taken, all actions and to do, or cause to be done, all things
necessary or desirable under Applicable Law and otherwise to consummate the
transactions contemplated by this LLC Agreement and to refrain from taking any
action that would prevent or delay the consummation of the transactions
contemplated by this LLC Agreement. The Members shall execute and deliver such
other documents, certificates, agreements and other writings and take such other
actions as may be reasonable and necessary or desirable in order to consummate
or implement expeditiously the transactions contemplated by this LLC Agreement.

     Section 9.9.   Ancillary Agreements.  Contemporaneously with or prior to
                    --------------------
the execution of this LLC Agreement, the Members, as applicable, shall enter
into or have entered into, or shall cause or have caused their Affiliates, as
applicable, to enter into, the Ancillary Agreements. The termination of an
Ancillary Agreement, without substitution with an agreement acceptable to the
Members, shall result in termination of this LLC Agreement pursuant to Section
10.2.

                                  ARTICLE X
                  DISPUTES; TERMINATION OF THIS LLC AGREEMENT

     Section 10.1.  Resolution of Disputes. If there shall exist a dispute
                    ----------------------
between the Members relating to approval of any Supermajority Transaction which
substantially impairs the Company's ability to operate and flourish in a manner
consistent with that anticipated by this LLC Agreement or substantially
constrains the Company's prospects, the Members shall negotiate in good faith
for a period of thirty (30) days in an effort to resolve the dispute. If such
negotiations are not successful, either party shall have the

                                      15

<PAGE>

right and option to notify the other party that the provisions of this Section
10.1 shall be invoked (the "Dispute Notice"). If a Dispute Notice is given and
if requested by eitherparty within 10 days thereafter, the Members shall submit
the matter in dispute to the chief executive officer of GEMG and the chief
executive officer of PP for their review and resolution in such manner as they
deem necessary or appropriate. The Committee will be bound by any resolution
reached by the officers to whom such matter is submitted. If such officers
cannot resolve such matter within 30 days after submission to them, then this
LLC Agreement shall terminate.

     Section 10.2.   Termination.
                     -----------

            (a)     This LLC Agreement may be terminated by either GEMG or PP by
giving 30 days' notice if the other party is in Material Breach.

            (b)     This LLC Agreement shall automatically be terminated upon:

                    (i)    the written consent of all Members;

                    (ii)   the sale, exchange or other disposition of all or
substantially all of the assets of the Company; or

                    (iii)  the Distributor Agreement or any other Ancillary
Agreement being terminated and not replaced.

            (c)     This LLC Agreement may be terminated in accordance with the
provisions of Section 10.1 of this LLC Agreement.

     Section 10.3.  Effect of Termination.  If this LLC Agreement is terminated,
                    ---------------------
the Members shall have no further obligations hereunder, except that the
provisions of Sections 9.1 and 9.2 shall survive the termination of this LLC
Agreement. The Members will have additional obligations upon the termination of
the Distributor Agreement, as set forth therein.

     Section 10.4.  Survival of Representations and Warranties.  Notwithstanding
                    ------------------------------------------
any investigation made by GEMG, PP or the Company, or such Member's or the
Company's representative, with respect to the representations or warranties of
the other party, the representations and warranties of the Members contained in
this LLC Agreement or in any certificate or other writing delivered pursuant
hereto or in connection herewith shall survive until the third anniversary of
the execution hereof or (i) in the case of paragraphs 1, 2, 4 and 7 of Annex B,
indefinitely, and (ii) in the case of paragraphs 5, 8 and 9 of Annex B, until
expiration of the applicable statutory period of limitations (giving effect to
any waiver, mitigation or extension thereof), if later. Notwithstanding the
preceding sentence, any representation or warranty in respect of which indemnity
may be sought under Section 10.5 shall survive the time at which it would
otherwise terminate pursuant to the preceding sentence, if notice of the
inaccuracy or breach thereof giving rise to such right to indemnity shall have
been given to the party against whom such indemnity may be sought prior to such
time. All covenants and agreements contained in this LLC Agreement shall
survive until fully performed in accordance with their terms.

     Section 10.5.  Indemnifiable Claims.  Subject to the limitations set forth
                    --------------------
in any Ancillary Agreement, the Members agree to the following indemnifications
and procedures:

                                      16

<PAGE>

            (a)     Indemnification by the Members.  Each Member hereby agrees
                    ------------------------------
to indemnify the other Members and the Company (without duplication) and their
respective Affiliates, directors, officers and employees against, and agrees to
hold them harmless from, any and all Damages incurred or suffered by any of them
as a result of claims by third parties arising out of or related in any way to
(i) any misrepresentation or breach of any representation or warranty made by
the Members in this LLC Agreement, and (ii) the breach or non-performance of any
covenant or obligation required by this LLC Agreement to be performed or
observed by the Member, provided, however, that no Member shall be required to
                        --------  -------
pay any Damages arising under clause (i) of this Section 10.5(a) unless and
until the aggregate amount of such Damages attributable to such Member shall
reach $25,000, at which time such Member shall become responsible for all such
Damages (including the initial $25,000); and provided further, that the
                                             -------- -------
indemnification obligations of the Members hereunder shall each be limited to
$1,000,000. The foregoing indemnification shall not in any manner limit a
Member's legal remedies against the other Member under applicable law.

            (b)     Waiver of CERCLA Defense.  The Members, on behalf of
                    ------------------------
themselves and their respective Affiliates, and the Company expressly waive any
claim or defense that the indemnifications contained in this LLC Agreement or in
the Ancillary Agreements are unenforceable under Section 107(e) of CERCLA.

            (c)     Notice.  Each party to this Agreement agrees to give prompt
                    ------
notice to the other parties to this Agreement of the assertion of any claim, or
the commencement of any suit, action or proceeding brought by a Person that is
not a party to this Agreement ("Indemnified Claims") in respect of which the
Members, the Company or their respective Affiliates, or their respective
directors, officers, employees or agents seek indemnity under Section 10.5(a),
after such Member of the Company becomes aware of the facts giving rise to such
Indemnified Claim. The failure of any party to provide notice pursuant to this
Section 10.5(d) shall not constitute a waiver of that party's claims to
indemnification pursuant to Section 10.5 in the absence of material prejudice to
the party that did not receive such notice. Any such notice to a party shall be
accompanied by a copy of any papers theretofore served on the notifying party in
connection with the Indemnified Claims.

            (d)     Defense and Settlement of Claims.
                    --------------------------------

                    (i)    Assumption of Defense.  Upon receipt of notice from a
                           ---------------------
party seeking and entitled to indemnification (an "Indemnified Party") pursuant
to this Agreement, the party or parties against whom indemnification is sought
(an "Indemnifying Party") will, subject to the provisions of Section
10.5(e)(ii), assume the defense and control of such Indemnified Claims but shall
allow the Indemnified Party or Parties a reasonable opportunity to participate
in the defense thereof with its or their own counsel and at its or their own
expense. The Indemnifying Party shall (A) select counsel, contractors and
consultants of recognized standing and competence after consultation with the
Indemnified Party or Parties, (B) take all steps necessary in the defense or
settlement thereof and (C) at all times diligently and promptly pursue the
resolution thereof. The Indemnified Party or Parties shall, and shall cause
each of their respective Affiliates and their respective directors, members,
officers, employees, and agents to, cooperate fully with the Indemnifying Party
in the defense of any Indemnified Claim.

                    (ii)   Settlement of Claims.  The Indemnifying Party shall
                           --------------------
be authorized to consent to a settlement of, or the entry of any judgment
arising from, any Indemnified Claims, without the consent of any Indemnified
Party; provided, that the Indemnifying Party shall (A) pay or cause to be paid
       --------
all

                                      17

<PAGE>

amounts arising out of such settlement or judgment concurrently with the
effectiveness thereof, (B) not encumber any of the assets of any Indemnified
Party or agree to any restriction or condition that would apply to such
Indemnified Party or to the conduct of that party's business, (C) obtain, as a
condition of any settlement or other solution, a complete release of each
Indemnified Party and (D) provide to the Indemnified Party notice of the
proposed settlement prior to such settlement.

                                  ARTICLE XI
            DISSOLUTION, LIQUIDATION AND TERMINATION OF THE COMPANY

     Section 11.1.  Dissolution.  The Company shall be dissolved and its affairs
                    -----------
wound up on the first to occur of the following:

            (a)     the Members shall agree in writing to dissolve the Company;

            (b)     any Member shall become a Bankrupt Member or dissolve, or
there shall occur any other event (other than a transfer of a Membership
Interest in accordance with Article IV or Article X) that terminates the
continued membership in the Company of any Member;

            (c)     the entry of a decree of judicial dissolution of the Company
under [sec] 18-802 of the Act; and

            (d)     the termination of this LLC Agreement.

     Section 11.2.  Liquidation and Termination.  On dissolution of the Company,
                    ---------------------------
the Committee shall appoint as liquidator one or more Persons that are not
affiliated with the Members. The liquidator shall proceed diligently to wind up
the affairs of the Company and make final distributions as provided in this LLC
Agreement and in the Act. The costs of liquidation 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 a Required Interest.
A reasonable time shall be allowed for the orderly liquidation of the assets of
the Company and the discharge of liabilities to creditors so as to enable the
liquidator to minimize any losses resulting from liquidation. The liquidator,
as promptly as possible after dissolution and again after final liquidation,
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 day of the calendar month in which the dissolution occurs or the final
liquidation is completed, as applicable, and shall apply the proceeds of
liquidation as set forth in the remaining sections of this Article XI.

     Section 11.3.  Payment of Debts.  The assets shall first be applied to the
                    ----------------
payment of the liabilities of the Company (other than any loans or advances that
may have been made by Members to the Company) and the expenses of
liquidation.

     Section 11.4.  Debts to Members.  The remaining assets shall next be
                    ----------------
applied to the repayment of any loans made by any Member or Member Affiliate to
the Company.

     Section 11.5.  Remaining Distribution.  The remaining assets shall then be
                    ----------------------
distributed to the Members in the following order:

            (a)     If non-cash property of the Company is to be distributed,
the fair market value of such property as of the date of dissolution shall be
determined by the Members pursuant to Part B.7(a) of

                                      18

<PAGE>

Exhibit 2 using such reasonable methods of valuation as they may adopt. Such
property shall be deemed to have been sold as of the date of dissolution for
such fair market value, and the Capital Accounts of the Members shall be
adjusted prior to the distribution of such property pursuant to Article VI of
this LLC Agreement to reflect the manner in which gain or loss which would have
been realized by the Company as a result of such deemed sale would have been
allocated under Article VI and Exhibit 2 of this LLC Agreement.

            (b)     Distributions shall be made according to the positive
balance(s) (if any) of the Members' Capital Accounts (as determined after taking
into account all Capital Account adjustments for the Company's Fiscal Year
during which the liquidation occurs), either in cash or in kind, as determined
by the Committee, with any assets distributed in kind being valued for this
purpose at their fair market value as determined pursuant to Section 11.5(a).
Any such distributions to the Members in respect of their Capital Accounts shall
be made in accordance with the time requirements set forth in Treas. Reg. [sec]
1.704-1(b)(2)(ii)(b)(2).

            (c)     Notwithstanding anything to the contrary in this LLC
Agreement, upon a liquidation within the meaning of Treas. Reg. [sec]
1.704-1(b)(2)(ii)(g), if any Member has a deficit Capital Account (after giving
effect to all contributions, distributions, allocations, and other Capital
Account adjustments for all Fiscal Years, including the year during which such
liquidation occurs), the Member shall have no obligation to make any Capital
Contribution, and the negative balance of such Capital Account shall not be
considered a debt owed by the Member to the Company or to any other Person for
any purpose whatsoever.

     Section 11.6.  Reserve.  Notwithstanding the provisions of Sections 11.4
                    -------
and 11.5, the liquidator may retain such amount as it deems necessary as a
reserve for any contingent liabilities or obligations of the Company, which
reserve, after the passage of a reasonable period of time, shall be distributed
pursuant to the provisions of this Article XI.

     Section 11.7.  Final Accounting.  Each of the Members shall be furnished
                    ----------------
with a statement prepared by the Company's certified public accountants, which
shall set forth the assets and liabilities of the Company as of the date of the
complete liquidation. Upon the compliance by the liquidator with the foregoing
distribution plan, the liquidator shall execute and cause to be filed a
certificate of cancellation and any and all other documents necessary with
respect to termination and cancellation of the Company under the Act.

                                   ARTICLE XII
                                  MISCELLANEOUS

     Section 12.1.  Relationship of the Members.  The relationship of the
                    ---------------------------
Members shall be limited solely to the purpose and scope of the Company as
expressed in this LLC Agreement and in the Ancillary Agreements. This LLC
Agreement shall not constitute the appointment of either party to this LLC
Agreement as the legal representative or agent of the other party. Neither
party to this LLC Agreement shall have any right or authority to assume, create
or incur any liability or any obligation of any kind, express or implied,
against or in the name of or on behalf of the other party to this LLC Agreement.
Except as may be specifically provided in this LLC Agreement or any Ancillary
Agreement, neither the Company nor either party shall assume or be responsible
for any liability or obligation of any nature of, or any liability or obligation
that arises from any act or omission to act of, any other party however or
whenever arising.

                                      19

<PAGE>

     Section 12.2.  Performance by the Company.  The Members shall cause the
                    --------------------------
Company to perform the obligations on the Company's part to be performed by it
under this LLC Agreement and the Ancillary Agreements.

     Section 12.3.  Agreement for Further Execution.  At any time or times upon
                    -------------------------------
the request of the Committee or either Member, each Member agrees to sign and
swear to any certificate, any amendment to or cancellation of such certificate,
acknowledge similar certificates or affidavits or certificates of fictitious
firm name or the like (and any amendments or cancellations thereof) required by
the laws of the State of Delaware, or any other jurisdiction in which the
Company does, or proposes to do, business. This Section 12.3 shall not
prejudice or affect the rights of the Members to approve certain amendments to
this LLC Agreement pursuant to Section 12.5.

     Section 12.4.  Notices.  All notices, requests and other communications to
                    -------
any party or to the Company hereunder shall be in writing (including telex,
telecopy or similar writing) and shall be given,

          if to GEMG:                      GE Microgen, Inc.
                                           One River Road
                                           Schenectady, NY  12345
                                           Attention: President
                                           Telecopy:  (518) 385-5704

          with a copy to:                  GE Power Systems
                                           One River Road
                                           Schenectady, NY  12345
                                           Attention: General Counsel
                                           Telecopy: (518) 385-4725

          if to PP:                        Plug Power, Inc.
                                           968 Albany-Shaker Road
                                           Latham, NY  12110
                                           Attention: President and CEO
                                           Telecopy: (518) 782-7914

or to such other address or telecopy number and with such other copies, as such
party may hereafter specify by notice to the other parties. Each such notice,
request or other communication shall be effective upon receipt, provided that if
the day of receipt is not a Business Day then it shall be deemed to have been
received on the next succeeding Business Day.

     Section 12.5.   Amendments; No Waivers.
                     ----------------------
            (a)     Any provision of this LLC Agreement may be amended or waived
if, and only if, such amendment or waiver is in writing and signed, in the case
of an amendment, by all the Members, or in the case of a waiver, by the party
against whom the waiver is to be effective.

            (b)     No failure or delay by any party in exercising any right,
power or privilege under this LLC Agreement shall operate as a waiver thereof
nor shall any single or partial exercise thereof preclude any other or further
exercise thereof or the exercise of any other right, power or privilege. The

                                      20

<PAGE>

rights and remedies in this LLC Agreement provided shall be cumulative and not
exclusive of any rights or remedies provided by law.

     Section 12.6.  Successors and Assigns.  Neither party shall assign this
                    ----------------------
LLC Agreement or any of its rights in and to this LLC Agreement, except that
GEMG may, upon notice to PP, assign its rights in this LLC Agreement to an
Affiliate of GE. Subject to the preceding sentence and other provisions hereof,
 the provisions of this LLC Agreement shall be binding upon and inure to the
 benefit of the Members and their respective permitted successors and assigns.

     Section 12.7.  Governing Law.  The laws of the State of Delaware shall
                    -------------
govern the validity, interpretation, construction, performance, and enforcement
of this LLC Agreement, provided that any provision of such laws (e.g., choice of
law provisions) invalidating any provision of this LLC Agreement or modifying
the intent of the Members as expressed in the terms of this LLC Agreement shall
not apply. It is further agreed that any and all litigation relating to this
LLC Agreement or the Company shall be brought in a state or federal court
located within the State of New York; and each Member, for the purpose of all
such litigation, hereby submits to the exclusive jurisdiction and venue of such
courts.

     Section 12.8.  Illegality and Severability.  If application of any one or
                    ---------------------------
more of the provisions of this LLC Agreement shall be unlawful under Applicable
Law and regulations, then the parties will attempt in good faith to make such
alternative arrangements as may be legally permissible and which carry out as
nearly as practicable the terms of this LLC Agreement. Should any portion of
this LLC Agreement be deemed unenforceable by a court of competent jurisdiction,
the remaining portion hereof shall remain unaffected and be interpreted as if
such unenforceable portions were initially deleted.

     Section 12.9.  Counterparts; Effectiveness.  This LLC Agreement may be
                    ---------------------------
signed in any number of counterparts, each of which shall be an original, with
the same effect as if the signatures thereto and to this LLC Agreement were upon
the same instrument. This LLC Agreement shall become effective when each party
to this LLC Agreement shall have received a counterpart hereof signed by the
other party to this LLC Agreement.

     Section 12.10. Entire Agreement.  This LLC Agreement and the Ancillary
                    ----------------
Agreements (and any other agreements contemplated hereby or thereby) constitute
the entire agreement among the Members with respect to the subject matter hereof
and supersede all prior agreements, understandings and negotiations, both
written and oral, between the Members with respect to the subject matter hereof
or thereof (including, without limitation, the Memoranda of Understanding of the
Members dated June 26, 2001 and July 2, 1998). No representation, inducement,
promise, understanding, condition or warranty not set forth in this LLC
Agreement has been made or relied upon by any party to this LLC Agreement. This
LLC Agreement is not intended to confer upon any Person other than the Members
and the Company any rights or remedies hereunder.

     Section 12.11. Captions.  The captions in this LLC Agreement are included
                    --------
for convenience or reference only and shall be ignored in the construction or
interpretation hereof.

     Section 12.12.  Expenses.  All costs and expenses incurred in connection
                     --------
with the transactions contemplated by this LLC Agreement shall be paid by the
Member incurring such cost or expense, except as otherwise provided in this LLC
Agreement or any Ancillary Agreement.

                                      21

<PAGE>

     Section 12.13.  Limitation of Liability.  In no case will a Member be
                     -----------------------
liable to the other for special, incidental, or consequential damages,
including, but not limited to, personal injury, property damage, loss of profit
or revenues, or business interruption.

         IN WITNESS WHEREOF, the Members have hereunto set their hands on the
day and year first above written.

                                      MEMBERS:
                                      -------

                                      GE MICROGEN, INC.

                                      By:_______________________________________
                                               Barry Glickman, President

                                      PLUG POWER, INC.

                                      By:_______________________________________
                                            Roger Saillant, President and CEO

                                      22

<PAGE>

                                    ANNEX A
                                    -------

                                  DEFINITIONS

      Definitions. The following terms, as used in this LLC Agreement or any
      -----------
Ancillary Agreement, unless otherwise specifically defined therein, have the
following meanings:

      "Act" means the Delaware Limited Liability Company Act, Del. Stat.
[sec][sec] 18-101 to 18-1107, inclusive, as in effect from time to time in the
State of Delaware.

      "Additional Member" means any Person admitted as a Member of the Company
after the date of original execution of this LLC Agreement in accordance with
the provisions of Section 4.2 hereof.

      "Affiliate" means, with respect to any Person, any Person directly or
indirectly controlling, controlled by, or under common control with such other
Person, except that an Affiliate of PP shall only include any Person directly
or indirectly controlled by PP. As used herein, control shall mean the
ownership, either directly or by attribution, of more than 50% of the combined
voting rights attributable to the equity interests of a Person or the ability,
either direct or indirect, to control the composition of the majority of the
Board of Directors or comparable management body of a person.

      "Ancillary Agreements" means the Contribution Agreement, Promissory Note
and Security Agreement, GE Trademark and Tradename Agreement, PP Trademark
Agreement, and Distributor Agreement contemplated by and executed in connection
with this LLC Agreement, forms of which are attached to this LLC Agreement as
Exhibits 5 through 9, respectively.

      "Applicable Law" means, with respect to any Person, any domestic or
foreign, federal, state or local statute, law, ordinance, rule, administrative
action, regulation, order, writ, injunction, judgment, decree or other
requirement of any Governmental Authority (including any Environmental Law)
applicable to such Person or any of its Affiliates or any of their respective
properties, assets, officers, directors, employees, consultants or agents (in
connection with such officers, directors, employee's, consultants or agent's
activities on behalf of such Person or any of its Affiliates).

      "Bankrupt Member" means any Member (i) that (A) makes an assignment for
the benefit of creditors; (B) files a voluntary petition in bankruptcy; (C) is
adjudged bankrupt or insolvent, or has entered against such Member an order for
relief, in any bankruptcy or insolvency proceedings; (D) files a petition or
answer seeking for the Member any reorganization, arrangement, composition,
readjustment, liquidation, dissolution or similar relief under any statute, law
or regulation; (E) files an answer or other pleading admitting or failing to
contest the material allegations of a petition filed against the Member in any
proceeding of the type described in subclauses (A) through (D) of this clause
(i); or (F) seeks, consents to, or acquiesces in the appointment of a trustee,
receiver or liquidator of the Member or of all or any substantial pert of the
Member's properties; or (ii) against which, a proceeding seeking
reorganization, arrangement, composition, readjustment, liquidation,
dissolution, or similar relief under any statute, law or regulation has been
commenced and one hundred twenty (120) days have expired without dismissal
thereof or with respect to which, without the Member's consent or acquiescence,
a trustee, receiver or liquidator of the Member or of all or any substantial
part of the Member's properties has been appointed and ninety (90) days have
expired without the appointment having been vacated or stayed, or ninety (90)
days have expired after the date of expiration of a stay, if the appointment
has not previously been vacated.

<PAGE>

      "Business Day" means a day other than a Saturday, Sunday or other day on
which commercial banks in New York, New York are authorized or required by law
to close.

      "Capital Account" means, as to a Member, the account established and
maintained for such Member pursuant to Article VI hereof.

      "Capital Contribution" means the amount in cash or the value of property
contributed by each Member (or its original predecessor in interest) to the
capital of the Company in exchange for such Member's interest in the Company.

     "Change of Control" shall mean any of the following with respect to PP:
(i) the purchase or other acquisition by any person, entity or group of
persons, within the meaning of Section 13(d) or 14(d) of the Exchange Act, of
beneficial ownership (within the meaning of Rule 13d-3 promulgated under the
Exchange Act) of fifty percent (50%) or more of either the outstanding common
stock or the combined voting power of PP's then outstanding voting securities
entitled to vote generally; (ii) a reorganization, merger or consolidation of
PP, in each case, with respect to which persons who were shareholders of PP
immediately prior to such reorganization, merger or consolidation do not,
immediately thereafter, own more than fifty percent (50%) of the combined
voting power entitled to vote generally of PP or the surviving or resulting
entity (as the case may be); (iii) a complete liquidation or dissolution of PP;
or (iv) a sale of all or substantially all of PP's assets.

      "Code" means the Internal Revenue Code of 1986, as amended, together
with the rules and regulations promulgated thereunder.

      "Committee" means the committee established pursuant to Section 7.2
hereof.

      "Company" means "GE Fuel Cell Systems, L.L.C.," a Delaware limited
liability company.

      "Contemplated Transactions" means the transactions contemplated by this
LLC Agreement and the Ancillary Agreements.

      "Damages" means all assessments, losses, damages, costs, expenses,
liabilities, judgments, awards, fines, sanctions, penalties, charges and
amounts paid in settlement, including, without limitation, reasonable costs,
fees and expenses of attorneys, experts, accountants, appraisers, consultants,
witnesses, investigators and any other agents or representatives (with such
amounts to be determined net of any resulting tax benefit and net of any refund
or reimbursement of any portion of such amounts including, without limitation,
reimbursement by way of third party insurance or third party indemnification)
arising from or incurred in connection with any demand, claim, action, cause of
action or proceeding.

      "Dispose," "Disposing," or "Disposition" means a sale, assignment,
transfer, exchange, mortgage, pledge, grant of a security interest, or other
disposition or encumbrance (including, without limitation, by operation of law).

      "Fair Market Value" means, with respect to a Membership Interest in the
Company, the cash price that an unrelated party would pay for such Membership
Interest, in light of all relevant factors in an arm's length transaction in
which neither party is compelled to buy or sell. The Fair Market Value of
Membership Interest in the Company shall be determined pursuant to the
procedure set forth in the balance of this paragraph. Each party shall submit
simultaneously to the other party a sealed proposal for the Fair

<PAGE>

Market Value within 30 days after the event which triggers the valuation.
Following the delivery of the two proposals, the amounts of the two proposals
shall be compared. If the lower of the proposals is equal to or more than 90%
of the higher of the proposals, the Fair Market Value shall be deemed to be the
average of the two proposals. If the lower of the proposals is more than 10%
less than the higher of the two proposals, the parties shall negotiate in good
faith to determine the Fair Market Value. If the parties cannot agree on the
Fair Market Value within 30 days of the opening of the sealed proposals, the
parties shall each appoint, within ten days after the end of such period, an
investment banking firm or other firm with significant experience in the
valuation of businesses, in either case, of recognized standing, which firms
need not be independent of the Company, PP and GE. Such firms shall negotiate
in good faith to determine the Fair Market Value. If the firms cannot agree on
the Fair Market Value within 30 days after the latter of them to be appointed,
the two firms shall, within 10 days after the end of such 30-day period, (1)
appoint a third such firm with significant experience in the valuation of
businesses, of recognized standing, and independent of the Company, PP and GE,
and share the results of their valuation analysis with such third firm. The
third firm shall determine the Fair Market Value within 45 days after being
appointed. The determination of Fair Market Value by this third firm shall be
final and conclusive. The parties shall share equally the costs of compensating
all of the foregoing firms.

      "Fiscal Year" has the meaning set forth in Section 6.2(b) of this LLC
Agreement.

      "GAAP" means generally accepted accounting principles.

      "GE Company Policies" means the corporate policy statements relating to
compliance with law, GE's General Accounting Practices and other matters
adopted and published by GE, which are attached to this LLC Agreement as
Exhibit 4, as amended and supplemented from time to time, or any successor
policies adopted by GE.

      "GEPS Competitor" means any of the following Persons, provided that GEMG
may revise this list upon written notice to PP to include additional Persons
involved directly, or indirectly through an affiliate, in the manufacture,
assembly, or provision of O&M services for, gas or steam turbines, regardless
of origin or design: AAR Engine Group - USA; ABB - Switzerland; Advanced
Materials Technologies, Inc. - USA; Aero & Industrial Technology - UK; Aetc
Ltd./ - UK; Alfa Laval - UK; AlliedSignal - US; Bailey Automation PLC - UK;
Baird Analtical - USA; Baker/MO Services Inc. - USA; Bales Scientific Inc. -
USA; Bently Nevada - USA; Bosman Powersource B.V. - Netherlands; Boyce
Engineering Int'l. Ltd. - UK; Boyce Engineering International - USA; Brush
Electrical Machines Ltd. - UK; Chromalloy Gas Turbine - USA; Concepts ETI, Inc.
- USA; Conmec, Inc. - USA; Cooper Energy Services - USA; Cooper Rolls - USA;
Demag Delaval Turbomachinery Corp. - USA; Dresser Rand Turbo Products Division
- USA; Ebara Corporation - Japan; Elbar BV - Netherlands; European Gas Turbines
Ltd. - UK; Fern Engineering, Inc. - USA; Fiat Avio S.P.A. - Italy; Gas-Path
Technology, Inc. - USA; Hickham Industries, Inc. - USA; Hitachi - Japan;
Honeywell Solid State Electric Center - USA; HSDE - UK; IHI-Japan; John Brown /
Kvearner Engineering - UK; Kawasaki - Japan; Liburdi Engineering Ltd. - Canada;
Man Gutehoffnungshutte AG - Germany; Mannesmann Demag Veidichter - Germany;
McGuffy Systems, Inc. - USA; Mitsubishi Heavy Industries - Japan; Moog Controls
- USA; Natole Turbine Enterprises, Inc. - USA; Ormat Industries Ltd. - Israel;
Petrotech, Inc. - USA; Polytec P.I. Inc. - USA; Powmat Ltd - USA; Pratt &
Whitney - USA; Precision Castparts Corp. - USA; Preco Turbine Services Inc. -
USA; Rolls-Royce Industrial & Marine - UK; Senior Thermal Engineering - UK;
Sermatech International Inc. - USA; Siemens-Westinghouse Power Corp. - USA;
Solar Turbines Incorporated - USA; SPE Mashproekt - Ukraine; Stork RMO BV -
Netherlands; Sulzer Turbo - Germany; Thomassen International B.V. -
Netherlands; Toshiba - Japan; Triconex Systems, Inc. -

<PAGE>

USA; Turbine Controls Ltd. - UK; Turbine Technology Services Corp. - USA;
Wilson & Daleo Inc. - Canada; Wood Group Gas Turbines Ltd. - UK.

      "Governmental Authority" means any foreign, federal, territorial, state
or local governmental authority, quasi-governmental authority, instrumentality,
court, commission or tribunal or any regulatory, administrative or other
agency, or any political or other subdivision, department or branch of any of
the foregoing.

      "IRS" means the U.S. Internal Revenue Service.

      "LLC Agreement" means this Amended and Restated Limited Liability Company
Agreement, as it may be amended from time to time in accordance with its terms.

      "Material Adverse Effect" means, with respect to any event, occurrence or
condition, or series of events, occurrences or conditions, a material adverse
effect on the operations, property or financial condition of the affected
business or entity taken as a whole.

      "Material Breach" means a breach by GEMG or PP, as the case may be, of
this LLC Agreement which breach, if not cured, would have a Material Adverse
Effect on the Company or the non-breaching party. A Material Breach shall not
exist for purposes of this definition unless the non-breaching party has given
written notice of such breach to the breaching party and (i) the party in
Material Breach fails to cure the subject default within 120 days of the
receipt of such notice or (ii) if such default cannot reasonably be cured
within such 120-day period, (A) the party in Material Breach fails promptly to
take and continue to take all reasonable steps to cure the default as promptly
as practicable after receipt of such notice or (B) at the end of such 120-day
period it appears that the breaching party will not be able to cure the
Material Breach within a commercially reasonable time (not to exceed an
additional 60 days); provided that the foregoing notice and cure periods shall
not apply to a particular provision of this LLC Agreement if other such periods
are specified in such provision.

      "Members" means GEMG and PP and any Person hereafter admitted to the
Company as a member as provided in this LLC Agreement.

      "Membership Interest" means the interest of a Member (expressed as a
percentage) in the Company. Membership Interests will be varied only as
specifically agreed by the parties and will not be affected by allocations of
Profits and Losses or other changes in Members' Capital Accounts.

      "MGPP" shall have the meaning ascribed to such term in the Distributor
Agreement.

      "Other Products" has the meaning ascribed to such term in Section 3.2 of
this LLC Agreement.

      "PEM Fuel Cell-Powered Generator Set" means a proton exchange membrane
("PEM") fuel cell stack, of any power output, with (in the case of a
hydrocarbon fuel) or without (in the case of hydrogen fuel) a fuel processor,
packaged with all of the ancillary components, systems, electronics, batteries,
controls, protective relaying (e.g., over/under current, transfer switch), and
enclosure(s) required to be ready for indoor or outdoor installation and
operation for stand-alone or grid-interconnected stationary power applications.

<PAGE>

      "Person" means an individual, a corporation, a partnership, a limited
liability company, an association, a trust or other entity or organization,
including a government or political subdivision or an agency or instrumentality
thereof.

      "Products" shall have the meaning ascribed to such term in the
Distributor Agreement.

      "Profits" and "Losses" mean, for each Fiscal Year or other period, an
amount equal to the Company's taxable income or loss for such year or period,
determined in accordance with Section 703(a) of the Code (for this purpose, all
items of income, gain, loss, or deduction required to be stated separately
pursuant to Section 703(a)(1) of the Code shall be included in taxable income
or loss), with the following adjustments:

     (i)            Any income of the Company that is exempt from federal income
tax and not otherwise taken into account in computing Profits or Losses pursuant
to this definition shall be added to such taxable income or loss and any related
expenses not allowed as a deduction pursuant to Section 265 of the Code shall
be subtracted from such taxable income or loss;

     (ii)   Any expenditures of the Company described in Section 705(a)(2)(B) of
the Code or treated as Section 705(a)(2)(B) of the Code expenditures pursuant
to Regulations Section 1.704-1 (b)(2)(iv)(i), and not otherwise taken into
account in computing Profits or Losses pursuant to this definition shall be
subtracted from such taxable income or loss; and

     (iii)  Notwithstanding any other provision of this definition, any items
which are specially allocated pursuant to Exhibit B to this LLC Agreement shall
not be taken into account in computing Profits or Losses.

      "Services" means the following activities associated with the Products:
installation; permitting; application engineering; operation; routine
maintenance; unscheduled maintenance; repair, overhaul (e.g., stack
replacement); upgrade; remote monitoring, diagnostics and/or control (i.e.,
dispatch); operator and customer training; customer service; customer support .

      "Substitute Member" means any Person not a Member of the Company (prior
to the transfer of a Membership Interest to such Person) to whom a Membership
Interest in the Company has been transferred and who has been admitted to the
Company as a Member pursuant to and in accordance with the provisions of
Section 4.4 of this LLC Agreement.

      "Supermajority Transaction" means a Supermajority Transaction defined as
such in Section 7.1 (b) of this LLC Agreement.

      "Territory" means every country, province, territory or other
principality in the world, except the States of Michigan, Indiana, Ohio, and
Illinois in the United States of America while DTE Energy Technologies ("DTE")
has exclusive rights to market and sell products similar to Products and
provide services similar to Services therein. In the event that DTE shall cease
to have exclusive rights to market and sell similar products and provide
similar services in the States of Michigan, Indiana, Ohio and Illinois (the
"DTE Territory"), this definition of "Territory" shall be expanded to include
the DTE Territory and the Company will have the rights to market and sell
Products and provide Services in the DTE Territory on a non-exclusive basis.

<PAGE>

      "To the best of an entity's knowledge" or "to the knowledge of an
entity" (or any similar phrase) means (I) with respect to GEMG, to the best of
the knowledge of (or to the knowledge of, as the case may be) the President of
GEMG, and (ii) with respect to PP, to the best of the knowledge of (or to the
knowledge of, as the case may be) the President and CEO and the General Counsel
of PP.

<PAGE>

                                    ANNEX B

                         REPRESENTATIONS AND WARRANTIES
                         ------------------------------

      The following representations and warranties which relate to PP, its
assets and businesses are made solely by PP to and in favor of GEMG and the
Company, and the representations and warranties which relate to GEMG, its
assets and businesses are made solely by GEMG to and in favor of PP and the
Company. Neither GEMG nor PP makes any representation with respect to
representations of the other party:

     1.   Existence and Power. Each of GEMG and PP is duly formed, validly
          -------------------
existing and in good standing under the laws of the state of its formation and
has all power and authority and all governmental licenses, authorizations,
consents and approvals required to carry on its business as now conducted,
except where the failure to have such licenses, authorizations, consents and
approvals would not, individually or in the aggregate, have a Material Adverse
Effect on the Company. Each party is duly qualified to do business as a foreign
limited liability company in each jurisdiction where the character of the
property owned or leased by it or the nature of its activities makes such
qualification necessary, except where the failure to be so qualified would not,
individually or in the aggregate, have a Material Adverse Effect on the Company.

     2.   Authorization. The execution, delivery and performance by each party
          -------------
of this LLC Agreement and each of the Ancillary Agreements to which it is or
will be a party and the consummation by such party of the Contemplated
Transactions are within its corporate powers and have been duly authorized by
all necessary corporate action on its part. This LLC Agreement and each of the
Ancillary Agreements to which it is or will be a party constitutes a legal,
valid and binding agreement of such party enforceable against such party in
accordance with its terms, (i) except as limited by applicable bankruptcy,
insolvency, reorganization, moratorium or other similar laws now or hereafter
in effect relating to or affecting creditors' rights generally, including the
effect of statutory and other laws regarding fraudulent conveyances and
preferential transfers, and (ii) subject to the limitations imposed by general
equitable principles (regardless of whether such enforceability is considered
in a proceeding at law or in equity).

     3.   Governmental Authorization. The execution, delivery and performance
          --------------------------
by each party of this LLC Agreement and each of the Ancillary Agreements to
which it is or will be a party require no action by or in respect of, or
consent or approval of, or filing with, any Governmental Authority other than:
(i) any actions, consents, approvals or filings otherwise expressly referred to
in this LLC Agreement or in an Ancillary Agreement; or (ii) where the failure
to take any such actions, obtain any such consents or approvals or make any
such filings would not, individually or in the aggregate, have a Material
Adverse Effect on the Company.

     4.   Non-Contravention. The execution, delivery and performance by each
          -----------------
party of this LLC Agreement and each of the Ancillary Agreements to which it is
or will be a party and its completion of the Contemplated Transactions do not
and will not (i) contravene or conflict with such party's organizational
documents, (ii) assuming compliance with the matters referred to in Section 3
of this Annex B, contravene or conflict with or constitute a violation of any
provision of any Applicable Law, (iii) assuming compliance with the matters
referred to in Section 3 of this Annex B, constitute a default under, or give
rise to any right of termination, cancellation or acceleration of any right or
obligation of GEMG or PP, as the case may be, or to a loss of any benefit to
which GEMG or PP is entitled under, any agreement, contract or other

<PAGE>

instrument binding upon GEMG or PP or by which any of its properties or assets
is or may be bound or any license, franchise, permit or similar authorization
held by GEMG or PP except, in the case of clauses (ii) and (iii), for any such
contravention, conflict, violation, default, termination, cancellation,
acceleration or loss that would not, individually or in the aggregate, have a
Material Adverse Effect on the Company.

     5.   Litigation; Disputes. There is no action, suit, investigation or
          --------------------
proceeding pending against, or, to the best of the knowledge of the applicable
party, threatened against, or affecting PP or GEMG before any court or
arbitrator or any governmental body, agency, official or authority which, if
adversely determined or resolved, may reasonably be expected to result in
liability or loss to the Company in excess of $50,000 or which in any manner
challenges or seeks to prevent, enjoin, alter or materially delay the
Contemplated Transactions. No dispute or claim exists between PP or GEMG and
any of their respective customers, suppliers, packagers or distributors
(including warranty claims) which is reasonably likely to have a Material
Adverse Effect on the Company.

     6.   Distributor and Sales Representative Agreements. Except for the
          -----------------------------------------------
Distribution Agreement with Edison Development Corporation dated June 27, 1997,
a true and complete copy of which has been delivered to GEMG, PP has not
entered into any distributor or sales representative agreements with respect to
the Products. Such agreement is in full force and effect, is a legal, valid and
binding obligation of PP and, to the knowledge of PP, each other party thereto,
enforceable against PP and, to the knowledge of PP, each such other party in
accordance with its terms (except as limited by applicable bankruptcy,
insolvency, reorganization, moratorium or other similar laws now or hereafter
in effect relating to or affecting creditors' rights generally, including the
effect of statutory and other laws regarding fraudulent conveyances and
preferential transfers, and subject to the limitations imposed by general
equitable principles regardless of whether such enforceability is considered in
a proceeding at law or in equity), and neither PP nor, to the knowledge of PP,
any other party thereto, is in material default or has failed to perform any
material obligation thereunder, and there does not exist any event, condition
or omission which would-constitute a material breach or material default
(whether by lapse of time or notice or both), except for any such default,
failure or breach that would not have a Material Adverse Effect on either PP's
fuel cell business or the Company. GEMG has not entered into any distributor or
sales representative agreements with respect to PEM Fuel Cell-Powered Generator
Sets.

     7.   Finders' Fees. There is no investment banker, broker, finder or other
          -------------
intermediary which has been retained by or is authorized to act on behalf of
such party who or which might be entitled to any fee or commission from such
party or any of its Affiliates upon consummation of the Contemplated
Transactions,

     8.   Compliance with Laws. Except for violations or infringements as have
          --------------------
not had and would not have a Material Adverse Effect on the Company, the
operations of GEMG's and PP's businesses have not violated or infringed, and do
not violate or infringe, in any material respect, any Applicable Law or any
order, writ, injunction or decree of any Governmental Authority.

     9.   Investment Representation. Each party is acquiring its interest in
          -------------------------
the Company solely for investment purposes and not with a view to the
distribution or resale thereof and acknowledges that its purchase of such
interest is expressly subject to the conditions and limitations on
transferability set forth in the LLC Agreement.

<PAGE>

                                    EXHIBIT 1
                                    ---------

                              MEMBERSHIP INTERESTS
                              --------------------

          NAME AND                                                MEMBERSHIP
       NOTICE ADDRESS                                              INTEREST
       --------------                                             ----------

       GE Microgen, Inc.                                              60%
       One River Road
       Schenectady, NY 12345

       Plug Power, Inc.                                               40%
       968 Albany-Shaker Road
       Albany, NY 12110

<PAGE>

                                   EXHIBIT 2
                                   ---------

                   ALLOCATION AND CAPITAL ACCOUNT PROVISIONS
                   -----------------------------------------

     For purposes of interpreting and implementing the LLC Agreement, the
following rules shall apply and shall be treated as part of the terms of the
LLC Agreement:

     A.   Special Allocation Provisions.
          -----------------------------

          1.   For purposes of determining the amount of gain or loss to be
allocated pursuant to Article VI of the LLC Agreement, any basis adjustments
permitted pursuant to Section 743 of the Code shall be disregarded.

          2.   Income, loss, deductions and credits shall be allocated to the
Members in accordance with the portion of the Fiscal Year during which the
Members have held their respective interests. All items of income, loss and
deduction shall be considered to have been earned ratably over the period of
the Fiscal Year, except that gains and losses arising from the disposition of
assets shall be taken into account as of the date thereof.

          3.   Notwithstanding any other provision of the LLC Agreement, to the
extent required by law, income, gain, loss and deduction attributable to
property contributed to the Company by a Member shall be allocated among the
Members so as to take into account any variation between the basis of the
property to the Company and the fair market value of the property at the time
of contribution in accordance with the requirements of Section 704(c) of the
Code and the applicable Treasury Regulations thereunder, as more fully
described in Part B hereof. The Company shall use the traditional method with
curative allocations described in Treasury Regulation Section 1.704-3(c) for
purposes of complying with Section 704(c)(1)(A) of the Code.

          4.   Notwithstanding any other provision of the LLC Agreement, in the
event the Company is entitled to a deduction for interest imputed under any
provision of the Code on any loan or advance from a Member (whether such
interest is currently deducted, capitalized or amortized) or for any payment or
deemed payment to a Member for Services provided pursuant to Section 3.2 of the
LLC Agreement, such deduction shall be allocated solely to such Member.

          5.   Notwithstanding any provision of the LLC Agreement to the
contrary, to the extent any payments in the nature of fees made to a Member are
finally determined by the IRS to be distributions to a Member for federal
income tax purposes, there will be a gross income allocation to such Member in
the amount of such distribution.

          6.   (a)     Notwithstanding any provision of the LLC Agreement to
the contrary and subject to the exceptions set forth in Section
1.704-2(f)(2)-(5) of the Treasury Regulations, if there is a net decrease in
Partnership Minimum Gain during any Fiscal Year, each Member shall be specially
allocated items of Company income and gain for such year (and, if necessary,
subsequent years) in an amount equal to such Member's share of the net decrease
in Partnership Minimum Gain determined in accordance with Section 1.704-2(g)(2)
of the Treasury Regulations. Allocations pursuant to the previous sentence
shall be made in proportion to the respective amounts required to be allocated
to each Member pursuant thereto. The items to be so allocated shall be
determined in accordance with Sections 1.704-2(f)(6) and 1.704-2(j)(2) of the
Treasury Regulations. This paragraph 6(a) is intended to comply with the
minimum gain

<PAGE>

chargeback requirement in Section 1.704-2(f) of the Treasury Regulations and
shall be interpreted consistently therewith. To the extent permitted by such
Section of the Treasury Regulations and for purposes of this paragraph 6(a)
only, each Member's Adjusted Capital Account Balance shall be determined prior
to any other allocations pursuant to Article VI of the LLC Agreement with
respect to such Fiscal Year and without regard to any net decrease in Partner
Minimum Gain during such Fiscal Year.

                       (b)     Notwithstanding any provision of the LLC
Agreement to the contrary, except paragraph 6(a) of this Exhibit 2 and subject
to the exceptions set forth in Section 1.704-2(i)(4) of the Treasury
Regulations, if there is a net decrease in Partner Nonrecourse Debt Minimum Gain
during any Fiscal Year, each Member who has a share of the Partner Nonrecourse
Debt Minimum Gain, determined in accordance with Section 1.704-2(i)(5) of the
Treasury Regulations, shall be specially allocated items of Company income and
gain for such Fiscal Year (and, if necessary, subsequent Fiscal Years) in an
amount equal to such Member's share of the net decrease in Partner Nonrecourse
Debt Minimum Gain, determined in accordance with Section 1.704-2(i)(4) of the
Treasury Regulations. Allocations pursuant to the previous sentence shall be
made in proportion to the respective amounts required to be allocated to each
Member pursuant thereto. The items to be so allocated shall be determined in
accordance with Sections 1.704-2(i)(4) and 1.704-2(j)(2) of the Treasury
Regulations. This paragraph 6(b) is intended to comply with the minimum gain
chargeback requirement in such Sections of the Treasury Regulations and shall
be interpreted consistently therewith. To the extent permitted by such
Sections of the Treasury Regulations, and solely for purposes of this paragraph
6(b), each Member's Adjusted Capital Account Balance shall be determined prior
to any other allocations pursuant to Article VI of the LLC Agreement with
respect to such Fiscal Year, other than allocations pursuant to paragraph 6(a)
hereof.

          7.   (a)     Notwithstanding any provision of the LLC Agreement to
the contrary, in the event any Member unexpectedly receives any adjustments,
allocations or distributions described in Treasury Regulation Section
1.704-1(b)(2)(ii)(d)(4), 1.704-1(b)(2)(ii)(d)(5) or 1.704-1(b)(2)(ii)(d)(6),
items of Company income and gain shall be specially allocated to such Members
in an amount and manner sufficient to eliminate, to the extent required by the
Treasury Regulations, the deficits in their Adjusted Capital Account Balances
created by such adjustments, allocations or distributions as quickly as
possible, provided that an allocation pursuant to this paragraph 7(a) shall be
made only if and to the extent that such Members would have a deficit Adjusted
Capital Account Balance after all other allocations provided for in the LLC
Agreement and this Exhibit 2 have been tentatively made as if this paragraph
7(a) were not in the LLC Agreement or incorporated thereinto.

                       (b)     In the event any Member has a deficit Capital
Account at the end of any Fiscal Year which is in excess of the sum of (i) the
amount such Member is obligated to restore pursuant to any provision of the LLC
Agreement, and (ii) the amount such Member is deemed to be obligated to restore
pursuant to the penultimate sentences of Sections 1.704-2(g)(1) and
1.704-2(i)(5) of the Treasury Regulations, each such Member shall be specially
allocated items of Partnership income and gain in the amount of such excess as
quickly as possible, provided that an allocation pursuant to this paragraph 7(b)
shall be made only if and to the extent that such Member would have a deficit
Capital Account in excess of such sum after all other allocations provided for
in the LLC Agreement and this Exhibit 2 have been made as if paragraph 7(a)
hereof and this paragraph 7(b) were not in the LLC Agreement or incorporated
thereinto.

<PAGE>

          8.   To the extent an adjustment to the adjusted tax basis of any
Company asset pursuant to Section 734(b) or Section 743(b) of the Code is
required, pursuant to Section 1.704-1(b)(2)(iv)(m)(2) or Section
1.704-1(b)(2)(iv)(m)(4) of the Treasury Regulations, to be taken into account
in determining Capital Accounts as the result of a distribution to a Member in
complete liquidation of its interest in the Company, the amount of such
adjustment to Capital Accounts shall be treated as a item of gain (if the
adjustment increases the basis of the asset) or loss (if the adjustment
decreases such basis) and such gain or loss shall be specially allocated to the
Members in accordance with their interest in the Company in the event that
Regulations Section 1.704-1(b)(2)(iv)(m)(2) applies, or to the Member to whom
such distribution was made in the event that Section 1.704-1(b)(2)(iv)(m)(4) of
the Treasury Regulations applies.

          9.   No loss shall be allocated to any Member to the extent that such
allocation would result in a deficit in its Adjusted Capital Account Balance
while any other Member continues to have a positive Adjusted Capital Account
Balance; in such event losses shall first be allocated to any Members with
positive Adjusted Capital Account Balances, and in proportion to such balances,
to the extent necessary to reduce their positive Adjusted Capital Account
Balances to zero. Any allocation of loss pursuant to this paragraph 9 shall be
offset in subsequent years on a last-in first-out priority basis by special
corresponding amounts.

          10.  Any special allocations of income in the of items pursuant to
this Part A (the "Regulatory Allocations") shall be taken into account in
computing subsequent allocations so that the net amount of any items so
allocated and the Profits, Losses and all other items allocated to each such
Member pursuant to Article VI of the LLC Agreement shall, to the extent
possible, be equal to the net amount that would have been allocated to each
such Member pursuant to the provisions of Article VI of the Agreement if such
Regulatory Allocations had not occurred.

          11.  Notwithstanding any provision of the LLC Agreement to the
contrary, Nonrecourse Deductions for any Fiscal Year or other period shall be
specially allocated to the Members pro rata in accordance with their respective
Membership Interests.

          12.  Notwithstanding any provision of the LLC Agreement to the
contrary, any Member Nonrecourse Deduction for any Fiscal Year or other period
shall be specially allocated to the Member who bears the economic risk of loss
with respect to the Partner Nonrecourse Debt to which such Partner Nonrecourse
Deductions are attributable in accordance with Section 1.704-2(i) of the
Treasury Regulations.

     B.   Capital Account Adjustments.
          ---------------------------

          1.   For purposes of computing the amount of any item of income,
gain, deduction or loss to be reflected in the Members' Capital Accounts, the
determination, recognition and classification of any such item shall be the
same as its determination, recognition and classification for federal income
tax purposes; provided, however, that:

               (a)     Any deductions for depreciation, cost recovery or
     amortization (other than depletion under Section 611 of the Code)
     attributable to property contributed by a Member to the capital of the
     Company shall be determined as if the adjusted basis of such property on
     the date it was acquired by the Company was equal to the fair market value
     of the property as determined by the Members pursuant to Part B.7(a) hereof
     using such reasonable methods of valuation as they

<PAGE>

     may adopt. Upon an adjustment to the Carrying Value of any Company property
     (other than property subject to depletion under Section 611 of the Code),
     any further deductions for such depreciation, cost recovery or amortization
     attributable to such property shall be determined as if the adjusted basis
     of such property was equal to the Carrying Value of such property
     immediately following such adjustment.

               (b)     Any income, gain or loss attributable to the taxable
     disposition of any property (including any property subject to depletion
     under Section 611 of the Code) shall be determined by the Company as if the
     adjusted basis of such property as of such date of disposition was equal in
     amount to the Company's Carrying Value with respect to such property as of
     such a date.

               (c)     The computation of all items of income, gain, loss and
     deduction shall be made by the Company and, as to those items described in
     Section 705(a)(1)(B) or Section 705(a)(2)(B) of the Code, or treated as
     Section 705(a)(2)(B) expenditures pursuant to Section 1.704-1(b)(2)(iv)(i)
     of the Treasury Regulations, without regard to the fact that such items are
     not includable in gross income or are neither currently deductible nor
     capitalizable for federal income tax purposes.

          2.   A transferee of a Membership Interest will succeed to the
Capital Account relating to the Membership Interest transferred.

          3.   Upon an issuance of additional Membership Interests for cash or
property, the Capital Accounts of all Members (and the Carrying Values of all
Company properties) shall, immediately prior to such issuance, be adjusted
(consistent with the provisions hereof) upward or downward to reflect any
unrealized gain or unrealized loss attributable to each Company property (as if
such unrealized gain or unrealized loss had been recognized upon an actual sale
of such property at the fair market value thereof, immediately prior to such
issuance, and had been allocated to the Members, at such time, pursuant to
Article VI of the Agreement). In determining such unrealized gain or
unrealized loss attributable to the properties, the fair market value of
Company properties shall be determined by the Members pursuant to Part B.7(a)
hereof using such reasonable methods of valuation as they may adopt.

          4.   Immediately prior to the distribution of any Company property in
liquidation of the Company, or the distribution by the Company to a Member of
any Company property as consideration for an interest in the Company, the
capital accounts of all Members (and the Carrying Values of all Company
properties) shall be adjusted (consistent with the provisions hereof and
Section 704 of the Code) upward or downward to reflect any unrealized gain or
unrealized loss attributable to each Company property (as if such unrealized
gain or unrealized loss had been recognized upon an actual sale of each such
property, immediately prior to such distribution, and had been allocated to the
Members, at such time, pursuant to Article VI of the Agreement). In
determining such unrealized gain or unrealized loss attributable to the
properties, the fair market value of Company properties shall be determined by
the Members pursuant to Part B.7(a) hereof using such reasonable methods of
valuation as they may adopt.

          5.   In the event the value of any Company asset is adjusted as
described in paragraph 3 or 4 above, subsequent allocations of income, gain,
loss and deduction with respect to such asset shall take account of any
variation between the value and the adjusted basis of such asset for federal

<PAGE>

income tax purposes in the same manner as under Section 704(c) of the Code and
the Treasury Regulations thereunder.

          6.   Any elections or other decisions relating to such allocations
shall be made by the Committee in any manner that reasonably reflects the
purpose and intention of the LLC Agreement.

          7.   The following actions shall require the consent of the holder(s)
of a majority of outstanding membership interests:

               (a)     the valuation of any non-cash property contributed to
the Company by a Member, or distributed to a Member by the Company, and the
valuation of all the assets of the Company if required for purposes of
computing the Members' Capital Accounts pursuant to the Regulations under
Section 704 of the Code; and

               (b)     the distribution by the Company to a Member of non-cash
property which had been previously contributed by a Member to the capital of
the Company, provided such distribution is made within the seven year period
following the date on which the property was contributed to the Company and
such distribution, if made, would cause the recognition of taxable income or
gain under Section 704(c)(1)(B) or Section 737 of the Code.

     C.   Definitions.  For the purposes of this Exhibit 2, the following terms
          -----------
shall have the meanings indicated unless the context clearly indicates
otherwise:

          "Adjusted Capital Account Balance": means the balance in the Capital
           --------------------------------
Account of a Member as of the end of the relevant Fiscal Year, after giving
effect to the following: (a) credit to such Capital Account any amounts the
Member is obligated to restore, pursuant to the terms of the Agreement or
otherwise, or is deemed obligated to restore pursuant to the penultimate
sentences of Sections 1.704-2(g)(1) and 1.704-2(i)(5) of the Treasury
Regulations, and (b) debit to such Capital Account the items described in
Sections 1.704-1(b)(2)(ii)(d)(4), (5) and (6) of the Treasury Regulations.

          "Carrying Value":  means (a) with respect to property contributed by
           --------------
a Member to the capital of the Company, the value of such property reduced (but
not below zero) by all amortization, depreciation and cost recovery deductions
charged to the Members' Capital Accounts with respect to such property, as well
as any other charges for sales, retirements and other dispositions of assets
included in property, as of the time of determination, and (b) with respect to
any other property, the adjusted basis of that property for federal income tax
purposes as of the time of determination. The Carrying Value of any property
shall be adjusted in accordance with the principles set forth herein.

          "Nonrecourse Deductions":  shall have the meaning set forth in
           ----------------------
Section 1.704-2(b)(1) of the Treasury Regulations. The amount of Nonrecourse
Deductions for a Fiscal Year equals the excess, if any, of the net increase, if
any, in the amount of Partnership Minimum Gain during that Fiscal Year over the
aggregate amount of any distributions during that Fiscal Year of proceeds of a
Nonrecourse Liability that are allocable to an increase in Partnership Minimum
Gain, determined according to the provisions of Section 1.704-2(c) of the
Treasury Regulations.

          "Nonrecourse Liability":  shall have the meaning set forth in Section
           ---------------------
1.704-2(b)(3) of the Treasury Regulations.

          "Partner Nonrecourse Debt Minimum Gain":  means an amount, with
           ------- -----------------------------
respect to each Partner Nonrecourse Debt, equal to the Partnership Minimum Gain
that would result if such Partner

<PAGE>

Nonrecourse Debt were treated as a Nonrecourse Liability, determined in
accordance with Section 1.704-2(i)(3) of the Treasury Regulations.

          "Partner Nonrecourse Debt":  shall have the meaning set forth in
           ------------------------
Section 1.704-2(b)(4) of the Treasury Regulations.

          "Partner Nonrecourse Deductions":  shall have the meaning set forth
           ------------------------------
in Sections 1.704-2(i)(1) and (2) of the Treasury Regulations. The amount of
Partner Nonrecourse Deductions with respect to a Partner Nonrecourse Debt for a
Fiscal Year equals the excess, if any, of the net increase, if any, in the
amount of Partner Nonrecourse Debt Minimum Gain attributable to such Partner
Nonrecourse Debt during that Fiscal Year over the aggregate amount of any
distributions during the Fiscal Year to the Member that bears the economic risk
of loss for such Partner Nonrecourse Debt to the extent such distributions are
from the proceeds of such Partner Nonrecourse Debt and are allocable to an
increase in Partner Nonrecourse Debt Minimum Gain attributable to such Partner
Nonrecourse Debt, determined in accordance with Section 1.702-2(i)(2) of the
Treasury Regulations.

          "Partnership Minimum Gain":  shall have the meaning set forth in
           ------------------------
Sections 1.704-2(b)(2) and 1.704-2(d) of the Treasury Regulations.

          "Treasury Regulations" or "Treas. Reg." shall include temporary and
           --------------------      ----------
final regulations promulgated under the Code in effect as of the date of filing
the Certificate and the corresponding sections of any regulations subsequently
issued that amend or supersede those regulations.

          For purposes of this Exhibit, all other capitalized terms will have
the same definition as in the LLC Agreement.

<PAGE>

                                   EXHIBIT 3
                                   ---------

                             INTENTIONALLY OMITTED

<PAGE>

                                   EXHIBIT 4
                                   ---------

                              GE COMPANY POLICIES
                              -------------------

                                 (See Attached)

<PAGE>

                                   EXHIBIT 5
                                   ---------

                         FORM OF CONTRIBUTION AGREEMENT
                         ------------------------------

                             INTENTIONALLY OMITTED

<PAGE>

                                   EXHIBIT 6
                                   ---------

                 FORM OF PROMISSORY NOTE AND SECURITY AGREEMENT
                 ----------------------------------------------

                                 (See Attached)

<PAGE>

                                   EXHIBIT 7
                                   ---------

                 FORM OF GE TRADEMARK AND TRADE NAME AGREEMENT
                 ---------------------------------------------

                                 (See Attached)

<PAGE>

                                   EXHIBIT 8
                                   ---------

                     FORM OF PLUG POWER TRADEMARK AGREEMENT
                     --------------------------------------
                                 (See Attached)

<PAGE>

                                   EXHIBIT 9
                                   ---------

                         FORM OF DISTRIBUTOR AGREEMENT
                         -----------------------------

                                   See Tab 1.<PAGE>

                                                                 Exhibit 10.46

                               GE POWER SYSTEMS
                                 1 RIVER ROAD
                          SCHENECTADY, NEW YORK 12345

                                 August 21, 2001

Plug Power Inc.
968 Albany-Shaker Road
Latham, New York  12110
Attn.:  Mr. Roger Saillant

     Re:     GE Fuel Cell Systems, L.L.C. (the "Company")

Dear Mr. Saillant:

     General Electric Company, a New York corporation ("GE"), acting through
its GE Power Systems business ("GEPS"), owns all of the outstanding capital
stock of GE Microgen, Inc. (f/k/a GE On-Site Power, Inc.), a Delaware
corporation ("GEMG"). GEMG and Plug Power Inc. (f/k/a Plug Power, L.L.C.), a
Delaware corporation ("PP"), are the members of GE Fuel Cell Systems, L.L.C., a
Delaware limited liability company (the "Company"), with GEMG and PP holding
75% and 25%, respectively of the Company's Membership Interest. GEMG has
agreed to shift to PP an additional 15% of the Membership Interest of the
Company to PP, thereby reducing its Membership Interest to 60% and increasing
PP's Membership Interest of the Company to 40%. Such transfer is to be effected
pursuant to the terms and conditions set forth in that certain Amended and
Restated Limited Liability Company Agreement (the "LLC Agreement") of even date
herewith, between GEMG and PP. Unless otherwise specified, capitalized terms
in this letter shall have the meanings ascribed to them in the LLC Agreement.
In addition, in connection with and in consideration of the shift in Membership
Interests described above, PP has agreed to issue to GE Power Systems Equities,
Inc. ("GEPS Equities"), an affiliate of GEMG, an Option to Purchase Common
Stock of PP, whereby GEPS Equities has the right to purchase from PP, at any
time and from time to time during the next five years, up to 725,000 shares of
PP common stock for a purchase price of $15.00 per share.

     Section 5.5(a) of the LLC Agreement obligates GEMG to arrange for loans to
the Company, which are to be provided by GE. In consideration of the benefits
to be derived by GEMG and, indirectly, by GE, from PP's participation in the
Company and PP's entering into the LLC Agreement and the Ancillary Agreements,
GE agrees to provide to the Company the loans contemplated by Section 5.5(a) of
the LLC Agreement, subject to the terms and conditions set forth therein. Such
loans shall be provided to the Company in accordance with the terms of the
Promissory Note and Security Agreement executed February 3, 1999.

     GE recognizes that the transactions contemplated by the LLC Agreement and
the Ancillary Agreements will establish the Company as PP's exclusive
distributor of Products in the Territory. GE, therefore, agrees that, while
the LLC Agreement is in effect and so long as the Company has not been
dissolved, GEPS will be bound by the following restrictions:

<PAGE>

Plug Power Inc.
August __, 2001
Page 2
---------------------

          (a)       GEPS will not Sell (as that term is defined in the
     Distributor Agreement of even date herewith (the"Distributor Agreement"))
     PEM Fuel Cell-Powered Generator Sets, replacement parts, upgrades,
     accessories, and improvements, (in each case, except as designed for use
     in propulsion applications) in the Territory, directly or through any
     entity other than the Company, provided that the Products are competitive,
     as determined pursuant to Section 4.2(b) of the Distributor Agreement,
     with non-PP manufactured PEM Fuel Cell-Powered Generator Sets.

     However, paragraph (a) shall not

          (b)       apply, with respect to GE, to any division or entity other
     than GEPS, and, within GEPS, such restrictions shall not apply to the fuel
     processing activities of GE Energy and Environmental Research Corp., a
     GEPS subsidiary; however, in the event that GE sells a non-PP manufactured
     PEM Fuel Cell-Powered Generator Set, except as designed for use in
     propulsion applications, PP may elect to name additional distributors in
     the Territory or terminate the LLC Agreement;

          (c)       prohibit the acquisition (by merger or otherwise) of the
     securities or assets of a business where the gross revenues of such
     business attributable to activities that violate the non-compete
     provisions of paragraph (a) constitute less than 15% of the total gross
     revenues of such business and where the entry into activities that violate
     the non-compete provisions of paragraph (a) is not the principal purpose
     of such acquisition, if the competing portion of such business is first
     offered for sale to the Company for the cost to the acquiror and the
     Member proposing to acquire such business cooperates to enable the Company
     to acquire it (including, if it remains a Member and is requested by the
     other Member, the provision of necessary fundsin proportion to the then
     outstanding Membership Interests);

          (d)       without limiting paragraph (b) above, restrict in any way
     General Electric Capital Services, Inc., and its subsidiaries, General
     Electric Investment Corporation, General Electric Investment Management
     Incorporated, or any other Affiliate of GE engaged primarily in the
     financial services business (including any account managed by any of them)
     from engaging in any activities, including, without limitation, holding an
     interest in any entity which, now or in the future, owns, operates or
     engages in a business that violates the non-compete provisions of
     paragraph (a), or foreclosing against or assuming operational control of
     such an entity or taking other enforcement actions; or

          (e)     prevent compliance by GEPS with license agreements or other
     commitments entered into prior to the date hereof, or prevent GEPS from
     entering into future license agreements or other commitments not related
     to Products, Services or technology derived from PP or the Company.

     The laws of the State of New York shall govern the validity,
interpretation, construction, performance, and enforcement of this letter
agreement, provided that any provision of such laws (e.g., choice of law
provisions) invalidating any provision hereof or modifying the intent of the

<PAGE>

Plug Power Inc.
August __, 2001
Page 3
---------------------

parties as expressed herein shall not apply. This letter agreement constitutes
the entire agreement between the parties hereto with respect to the subject
matter hereof, supersedes all prior agreements, understandings and
negotiations, both written and oral, between the parties with respect to the
subject matter hereof, and may not be assigned or modified without the written
consent of both parties. No representation, inducement, promise,
understanding, condition or warranty not set forth herein has been made or
relied upon by any party hereto. No party will be liable to the other for
special, incidental, or consequential damages, including, but not limited to,
personal injury, property damage, loss of profit or revenues, or business
interruption.

     Please indicate your acceptance of the terms of this letter agreement by
executing it in the space provided below, returning the executed original to
the address above, and retaining the executed copy for your records. Thank you.

                                      Very truly yours,

                                      GENERAL ELECTRIC COMPANY

                                      By:_________________________________
                                      Name:_______________________________
                                      Title:______________________________

Agreed and accepted this ____ day
of August, 2001.

PLUG POWER INC.

By:_______________________________
     Roger Saillant
     President and CEO

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00036-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00036-of-00352.parquet"}]]