Document:

<PAGE>

                                                                   Exhibit 10.51

CONFIDENTIAL INFORMATION HAS BEEN OMITTED PURSUANT TO RULE 246-2 UNDER THE
SECURITIES EXCHANGE ACT AND HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION. THE LOCATIONS OF THE OMITTED INFORMATION HAVE BEEN
INDICATED WITH AN "*".

                               SERVICES AGREEMENT

     THIS SERVICES AGREEMENT (the "Agreement") made this 17 day of March, 2000,
between Plug Power Inc., a Delaware corporation, having its principal place of
business at 968 Albany-Shaker Road, Latham, New York 12110 (hereinafter "Plug
Power") and General Electric Company, a New York corporation, having offices at
1 River Road, Schenectady, New York 12345 (hereinafter "GE").

                                  WITNESSETH:

     WHEREAS, Plug Power desires to have GE perform, and GE desires to perform,
certain technical services and support as is more fully defined in the
Statement of Work attached hereto as Exhibit 3.

     NOW, THEREFORE, in consideration of these premises and other good and
valuable consideration, receipt of which is hereby acknowledged, the parties
hereto agree to this Agreement.

1.   Definitions.
     -----------

(a)  "Agreement" shall mean this agreement, and any subsequent agreement
     amendment executed in accordance with the Change Order Protocol attached
     hereto as Exhibit 1.

(b)  "Change Order" shall have the meaning ascribed thereto in Exhibit 1.

(c)  "Funding Schedule" shall have the meaning ascribed thereto in Exhibit 2.

(d)  "Statement of Work" shall mean the statement of the work to be performed by
     GE in connection with the Agreement, which statement is attached to this
     Agreement as Exhibit 3.

2.   Change Orders; Additional Services and/or Funding.
     -------------------------------------------------

(a)  The Statement of Work and/or Funding Schedule may be modified or altered
     prior to completion only with a Change Order executed in accordance with
     the Change Order Protocol attached hereto as Exhibit 1.

(b)  In addition to any such additional services and/or funding effected by any
     such Change Order, GE shall, if and to the extent requested by Plug Power
     and upon mutual agreement by the parties, provide training and technical
     support services in respect of any deliverables produced by GE for, or
     delivered by GE to, Plug Power pursuant to this Agreement.

(c)  The standard terms and conditions attached hereto as Exhibit 4 shall apply
     to any

                                    Page 1

<PAGE>

     services performed by GE pursuant to this Agreement.

3.   Confidential Information.
     ------------------------

(a)  As used herein, the term "Confidential Information" of a party shall mean
any information or intellectual property of a party, whether presented in
writing or in any other tangible medium or presented verbally, that is of a
secret, confidential or non-public nature including, but not limited to (i)
matters of a technical nature (including inventions, data, concepts, devices,
software and documentation, secret processes or machines, know-how and related
improvements thereon), (ii) matters of a business nature (such as information
about contracts, profits, product pricing, promotional methods, markets, sales,
product availability, customers, suppliers), (iii) plans for further
development, and (iv) other information or intellectual property proprietary to
the party and not generally available to the public. All Confidential
Information shall be clearly marked by the disclosing party as "Confidential"
or "Proprietary".

(b)  Each party shall treat as confidential all Confidential Information of the
other party, shall not use such Confidential Information other than as required
to carry out its duties and exercise its rights under this Agreement, and shall
not disclose such Confidential Information to any third party. Notwithstanding
the previous sentence, a party may disclose Confidential Information of the
other party to its employees, agents and subcontractors who require such
information in order for such party to carry out its duties and exercise its
rights under this Agreement; provided that such employee, agent or
                             --------
subcontractor has first entered into a confidentiality agreement containing
substantially the same obligations and restrictions as this Section 3. Without
limiting the foregoing, each of the parties shall use reasonable care to
prevent the disclosure or misuse of Confidential Information disclosed to it by
the other party under this Agreement.

(c)  Notwithstanding the above, neither party shall have liability to the other
with regard to any Confidential Information of the other which:

          (i)    was in the public domain at the time it was disclosed or has
                 entered the public domain through no fault of the receiver;

          (ii)   was known to the receiver, without restriction, at the time of
                 disclosure as shown by the files of the receiver in existence
                 at time of disclosure;

          (iii)  was independently developed by the receiver without any use of
                 the Confidential Information of the other party and by
                 employees, agents and subcontractors of the receiver who have
                 not had access to the Confidential Information of the other
                 party; or

          (iv)   is disclosed pursuant to the order or requirement of a court,
                 administrative agency or other governmental body, provided
                                                                   --------
                 that the receiver shall have

                                    Page 2

<PAGE>

                 provided prompt notice thereof to the discloser to enable the
                 discloser to seek a protective order or otherwise prevent
                 disclosure.

(d)  Plug Power's Confidential Information is and shall remain the property of
Plug Power, and shall only be used by GE for the limited purpose of rendering
services directly related to the Work. GE acknowledges that, by the disclosure
of its Confidential Information, Plug Power has not granted to it any express
or implied right to Plug Power's patents, copyrights, trademarks, trade secrets
or other Confidential Information for any other purpose whatsoever.

(e)  Within 10 days after the acceptance date with respect to, or the effective
date of cancellation of, any Agreement, GE shall return to Plug Power all of
Plug Power's Confidential Information then in tangible form and then held by it
or under its control and any part or portion thereof, including all copies or
other reproductions thereof.

4.        Intellectual Property Rights.
          ----------------------------

(a)       Definitions
          -----------

          1.  "Technical Information" means all technical information, know-
              how, manufacturing techniques, engineering and other data,
              drawings, material and process specifications, and other
              information, whether patented or unpatented, whether in written,
              oral or other form, relating to fuel cells.

          2.  "Patents" means all patents (including patents of importation,
              patents of confirmation, patents of improvement, patents and
              certificates of addition and utility model patents, as well as
              divisions, reissues, continuations, continuations-in-part,
              reexamination certificates, renewals and extensions of any of
              the foregoing) and applications therefor and patents which may
              issue on such applications, covering inventions with respect to
              which the first application for patent anywhere was filed prior
              to the date of expiration or any prior termination of this
              Agreement.

          3.  "Technology" means Technical Information and Patents.

          4.  "Background" means, with respect to Patents, Technical
              Information and Technology, that which a party has acquired or
              acquires outside of this Agreement.

          5.  "Foreground" means, with respect to Patents, Technical
              Information and Technology, that which is created pursuant to
              this Agreement.

                                    Page 3

<PAGE>

(b)       Ownership and Use Rights in Technology
          --------------------------------------

          1.  Each party shall retain ownership of its Background Technology,
              and neither party shall obtain, either directly, by implication,
              estoppel or otherwise, rights under any Background Technology of
              the other party except as explicitly set forth herein.

          2.  In the event an invention is conceived solely by employees of GE
              in the course of performance of tasks under this Agreement, such
              inventions and any resulting Foreground Technology shall be
              owned by GE. GE shall have the sole right to apply for such
              Foreground Patents resulting from any such inventions, which
              shall be at GE's sole expense and option.

          3.  Inventions conceived jointly by employees of both parties in the
              course of performance of tasks under this Agreement and any
              resulting Foreground Technology arising from such joint
              inventions shall be the joint property of GE and Plug Power and,
              except as limited by this Agreement, each shall be free to
              utilize the same and to license third parties of its own
              choosing thereunder without consultation with the other party,
              and without an accounting or sharing of licensing income thereby
              received, if any. The parties agree to select mutually
              acceptable patent attorneys to file and prosecute patent
              applications based on such joint patentable inventions and to
              share equally the cost of such services and expenses reasonably
              incurred by such attorneys, including the payment of patent
              maintenance fees, and without further compensation, to give such
              attorneys all reasonable assistance, to cause all necessary
              papers to be executed and do all things that may reasonably be
              required to obtain and maintain patents on such joint
              inventions. Each party shall be kept fully advised of the
              status of the prosecution of each such patent application and
              shall be consulted in advance with respect to the advisability
              of continuing said prosecution in the event of any final
              rejection, appeal, interference, or the like, and each party
              may, at any time by ten (10) days' notice to the other party,
              elect not to continue to pay its share of such services and
              expenses incurred after the date of said election with respect
              to any such patent or patent application; provided, however,
              that the party making such an election shall, at the time of so
              notifying the other party, immediately assign to the other party
              all rights to the patent or patent application with respect to
              which the election is being made. Neither party hereto shall be
              obligated to make any payments for or on account of proceedings
              before any court or any other tribunal or agency in connection
              with the maintenance or assertion of any patent based on joint
              inventions.

          4.  In the event an invention is conceived solely by employees of
              Plug Power in the course of performance of tasks under this
              Agreement, any resulting Foreground Technology shall be owned by
              Plug Power. Plug Power shall

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<PAGE>

              have the sole right to apply for Foreground Patents resulting
              from any such inventions, which shall be at Plug Power's sole
              expense and option.

          5.  GE agrees to grant and hereby grants to Plug Power a royalty-free,
              irrevocable, world-wide license to make, have made, use, sell,
              offer for sale or otherwise dispose of fuel cells under the
              Foreground Technology described in Paragraphs 4(b)2 and 4(b)3.
              The foregoing grant consists of a right and license to use such
              Foreground Technical Information and a license under such
              Foreground Patents which cover the Technical Information.

                    (i)   In the case of fuel cell systems (i.e., fuel cell
                          stacks, fuel reformers, power electronic systems and
                          balance of plant (e.g., auxiliaries such as blowers,
                          fans, pipes)) employing proton exchange membrane
                          (PEM) technology (includes membranes that transport
                          protons, including polymer electrolyte membranes and
                          acid doped polymer membranes), and subject to
                          Paragraph 4(b)7, the license rights shall be
                          exclusive.

                    (ii)  In the case of fuel cells other than those employing
                          PEM technology, the license rights shall be non-
                          exclusive.

          6.  Prior to the parties mutually agreeing to start work in any
              specific area (the "Project"), GE agrees to notify Plug Power of
              any GE Background Technology administered by the GE Power
              Systems business ("GEPS") or GE Corporate Research and
              Development ("GE-CRD") where it appears to GE that the use or
              practice of the anticipated Project deliverables by Plug Power
              is likely to infringe such GE Background Technology, and such
              infringement cannot be reasonably avoided in the field of fuel
              cell systems employing PEM technology. Prior to the start of
              any Project, GE will either:

                    (i)   offer Plug Power a non-exclusive  license to use
                          such GE Background Technology as is necessary for
                          Plug Power to practice the Foreground Technology in
                          the field of fuel cell systems employing PEM
                          technology, such license to be under terms,
                          including compensation (if any), to be negotiated in
                          good faith; or

                    (ii)  negotiate with Plug Power to change the direction of
                          the Project so as to avoid infringement.

                    If GE fails to notify Plug Power of any relevant blocking GE
                    Background Technology administered by GEPS or GE-CRD, as
                    stated herein, then GE waives any future right to assert
                    such GEPS or GE-CRD administered Background Technology
                    against Plug Power in the field of fuel cell systems
                    employing PEM technology.

                                    Page 5

<PAGE>

          7.  The license grant set forth in Paragraph 4(b)5(i) hereof shall
              immediately become non-exclusive upon notice from GE:

                    (i)   in the event that Plug Power enters into a product
                          distribution and/or service relationship with the
                          following GE Power Systems' competitors: * provided,
                          however, that nothing herein shall prevent Plug Power
                          from using such competitors as product suppliers or
                          product manufacturers; or

                    (ii)  in the event Plug Power becomes a subject of any
                          voluntary or involuntary bankruptcy, settlement,
                          receivership, reorganization or other insolvency
                          proceedings, unless such proceedings are terminated
                          within six months from their original opening.

          8.  In the event that Plug Power desires to sell that portion of its
              business to which the license grants of Paragraph 4(b)5 relate
              or to sell a portfolio of assets that includes the license
              grants of Paragraph 4(b)5, Plug Power will provide GE with an
              exclusive 30-day negotiating period to purchase same and, after
              such 30-day period, Plug Power may not enter into such a
              transaction with any other party upon terms less favorable than
              those previously offered by GE.

(c)       Miscellaneous
          -------------

          1.  Nothing in this Agreement shall be construed as:

                    (i)   a warranty or representation by GE as to the validity
                          or scope of any GE Background or Foreground Patent;
                          or

                    (ii)  a warranty or representation that anything made,
                          used, sold or otherwise disposed of under any
                          license granted in this Agreement is or will be free
                          from infringement of patents of third parties; or

                    (iii) a requirement that GE shall file any patent
                          application, secure any patent or maintain any
                          patent in force; or

                    (iv)  an obligation to bring or prosecute actions or suits
                          against third parties for infringement.

          2.  GE makes no representations, extends no warranties of any kind,
              either express or implied, and assumes no responsibilities
              whatever with respect to the adequacy, accuracy, or utility of
              any Technical Information provided to Plug Power under this
              Agreement; and GE assumes no responsibilities whatever with
              respect to use by Plug Power or any third party of any Technical
              Information provided to Plug Power under this Agreement, or with
              respect to any use, sale or other disposition by Plug Power of
              any products incorporating or made by use of any (i) inventions
              licensed under this

                                    Page 6

<PAGE>

              Agreement, or (ii) Technical Information, if any, obtained by Plug
              Power under this Agreement

          3.  Plug Power agrees to indemnify, hold harmless and save from
              liability GE, including its officers, employees and agents from
              and against all claims, demands and actions arising out of or
              related to the commercial use by Plug Power of Technology
              licensed to Plug Power under Paragraphs 4(b)5 and 4(b)6 of this
              Agreement.

5.  Payment and Reporting Terms
    ---------------------------

    (a) The cost reimbursement for services to be rendered by GE shall not
    exceed $2,801,079 during the first six month period ending on June 31, 2000.
    Additional funding for the remainder of calendar year 2000 will be
    authorized on a quarterly basis prior to the beginning of third quarter by
    amendment to this Agreement in accordance with the Funding Schedule. In no
    event will the total funding for calendar year 2000 exceed $4,072,375 unless
    otherwise agreed to by the parties pursuant to the Change Order Protocol.

    (b) GE shall provide monthly reports to Plug Power of expenditures incurred
    under this Agreement. The monthly reports shall be provided within five
    working days following GE's monthly closing. Such monthly reports shall be
    broken down in accordance with the work task categories as set forth in the
    Statement of Work and shall include actual labor hour rates for each listed
    category (direct salary plus 45% for GE Power Systems, actual internal GE
    transfer rates for other GE divisions), plus actual expenditures without any
    markups for materials, supplies, travel, or other direct costs.

    (c) Invoices for actual expenditures incurred and paid shall be submitted to
    the Plug Power not more often than on a monthly basis. Payments shall be
    made within 30 days after receipt of invoice.

6.  Term and Termination.
    --------------------

    (a) This Agreement shall be effective as of the day and year first written
    above and shall continue in full force and effect until March 31, 2001,
    unless otherwise extended by mutual written agreement of the parties.

    (b) The provisions of Sections 3 and 4 of this Agreement shall survive any
    expiration or termination thereof.

    (b) Plug Power shall have the right to terminate this Agreement upon 15 days
    prior written notice to GE.

                          [NEXT PAGE IS SIGNATURE PAGE]

                                    Page 7

<PAGE>

     IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement
the day and year first above written.

PLUG POWER INC.                       GENERAL ELECTRIC COMPANY

By:__________________________         By:_______________________

Title:_______________________         Title:_ Manager, New Products & Processes
                                              General Electric Company

                                    Page 8

<PAGE>

                                    Exhibit 1
                                    ---------

                              Change Order Protocol
                              ---------------------

1.        Plug Power may, upon mutual agreement of the parties, alter the
          description of the Work and Deliverables required by any Agreement
          on notice to GE (any such notice, a "Change Order").

2.        Upon receipt of a Change Order request, Plug Power shall prepare and
          submit the following to GE: revised Statement of Work, delivery
          schedule, and where appropriate, payment schedule. GE shall prepare
          and submit to Plug Power an estimate of the increased or decreased
          costs, and delays or time savings associated with the Change Order.

3.        If Plug Power then wishes GE to proceed with the Change Order, Plug
          Power shall prepare a revised Statement of Work and delivery
          schedule and any such payment schedule for execution by the parties.
          The revised Statement of Work shall become effective upon execution
          by the parties.

4.        Plug Power and GE shall exercise its best efforts to minimize
          increased costs and delays, if any, associated with a Change Order.

                                    Page 9

<PAGE>

                                    Exhibit 2
                                    ---------

                                Funding Schedule
                                ----------------

Work for calendar year 2000 in accordance with this Agreement will be
authorized on a quarterly basis prior to the beginning of each quarter. This
Funding Schedule specifies the funding planned to be authorized for each
quarter and the date by which funding will be authorized by Change Order
Protocol .

Quarter          Funding to be authorized         Target date for authorization
-------------------------------------------------------------------------------

1 (Jan-Mar)            $1,447,119                        N/A
2 (Apr-Jun)            $1,353,960                        March 17, 2000
3 (Jul-Sep)            $  776,460                        June 16, 2000
4 (Oct-Dec)            $  494,835                        September 15, 1999

                                    Page 10

<PAGE>

                                    Exhibit 3
                                    ---------

                                Statement of Work
                                -----------------

                                    Attached

                                    Page 11

<PAGE>

                                    Exhibit 4
                                    ---------

                          Standard Terms and Conditions
                          -----------------------------

                                    Attached

                                     Page 12<PAGE>

                                                                   Exhibit 10.52

                         AMENDMENT TO SERVICES AGREEMENT

THIS AMENDMENT ("Amendment") to the March 17, 2000 Services Agreement between
Plug Power Inc. and General Electric Company is made and entered into as of this
18th day of September, 2000, by and between:

(1) PLUG POWER INC. (the "Buyer"), a corporation organized and existing under
the laws of Delaware and having a place of business at 968 Albany-Shaker Road,
Latham, New York, 12110, USA and

(2) GENERAL ELECTRIC COMPANY (the "Seller"), a corporation organized and
existing under the laws of the State of New York, U.S.A., having offices at 1
River Road, Schenectady, New York, 12345, USA. (Buyer and Seller are referred to
individually herein as a "Party" and collectively as the "Parties").

     WHEREAS, Buyer and Seller entered into a Services Agreement dated March 17,
2000 ("March 17 Agreement"), under which Seller agreed to perform certain
technical services and support for Buyer;

     WHEREAS, Seller is engaged in the business of procuring and delivering
various kinds of fuel cell equipment, parts and components;

     WHEREAS, Buyer desires that Seller act as its agent in procuring certain
fuel cell equipment, parts, and components;

     WHEREAS, Buyer desires that Seller provide training services to certain of
Buyer's employees regarding procurement services and Seller desires to sell
certain services subject to the terms and conditions of this Amendment;

     WHEREAS, Buyer and Seller desire that the costs for services provided
hereunder be included in the work task category labeled "Sourcing/Supplier
Quality and Manufacturing" in the Statement of Work in the March 17 Agreement;

     WHEREAS, Buyer and Seller desire to amend the March 17 Agreement to reflect
these changes;

     WHEREAS, the March 17 Agreement provides that the Statement of Work and/or
Funding Schedule may be modified or altered prior to completion only with a
Change Order (defined therein); and

     WHEREAS, Buyer and Seller agree that this Amendment shall replace any such
need for a Change Order with respect to the subject matter hereof;

                                       1

<PAGE>

         NOW, THEREFORE, in consideration of the mutual promises stated herein,
the parties agree as follows:

                              1. Scope of Services

Procurement/Supplier Quality Services. Seller shall use its negotiating
-------------------------------------
experience and ability to act as Buyer's agent, subject to Buyer's direction, in
identifying suppliers who can provide fuel cell equipment, parts, and
components, and other items as needed, to Buyer. Upon the identification of such
suppliers, Supplier shall notify Buyer, and it shall be Buyer's responsibility
to place purchase orders, if any, for such material. If requested by Buyer, to
the extent possible, Seller will include Buyer's volume requests with those of
Seller when procuring material in order to obtain volume discounts. In such
cases, Seller will disclose to the third party supplier that the request
includes quantities of Buyer.

Training Services. During the term of the Amendment, Seller shall provide
-----------------
personnel to train up to six (6) Buyer employees at offices designated by Seller
in Schenectady, New York in the performance of procurement services. Seller
shall not be obligated to provide training to more than two (2) employees of
Buyer during any given period.

                                    2. Price

2.1  In consideration of the supply of the foregoing Scope of Services, Buyer
     shall pay to Seller:

     .    The "Procurement Services Price" at the rates and fees set forth
          below;

     .    The "Training Services Price" in the amounts stated below;

     The "Contract Price" shall mean the total of the Primary Services Price and
     the Training Price.

    ----------------------------------------------------------------------------
                                             Price
    ----------------------------------------------------------------------------
    Training Price           $1650 - Per Person Per Week
    ----------------------------------------------------------------------------
    Procurement Services     Buyer - $75,500 Per Person Per Year
    Price                    SQE - $112,500 - Per Person Per Year

                             Contract Specialist - $112,500 Per Person Per Year

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

                                       2

<PAGE>

         Invoicing for travel expenses including air travel, car rental,
         lodging, meals and miscellaneous out-of-pocket expenses will be billed
         at cost plus a $50 administration fee.

2.2      The Contract Price shall be adjusted as necessary to take account of
         changes, options or other adjustments provided for in this Amendment.

2.3      Payments made by Buyer to Seller under this Amendment shall be included
         in the "Sourcing/Supplier Quality and Manufacturing" work task category
         in the Statement of Work set forth in the March 17 Agreement.

                              3. Terms of Payment

3.1      The Contract Price shall be paid by Buyer to Seller at the times and in
         the manner set forth in the March 17 Agreement. For purchases made by
         Seller on behalf of Buyer, Buyer shall reimburse Seller within ten days
         of purchase or as mutually agreed by Buyer and Seller.

                              4. Excusable Delays

4.1      Seller shall not have any liability or be considered to be in breach or
         default of its obligations under the Amendment to the extent that
         performance of such obligations is delayed or prevented, directly or
         indirectly, due to: (i) causes beyond its reasonable control; or (ii)
         acts of God, act (or failures to act) of governmental authorities,
         fires, severe weather conditions, earthquakes, strikes or other labor
         disturbances, floods, war (declared or undeclared), epidemics, civil
         unrest, riot, delays in transportation, or car shortages; or (iii) acts
         (or omissions) of Buyer including failure to promptly: (a) provide
         Seller with information and approvals necessary to permit Seller to
         proceed with work immediately and without interruption, (b) comply with
         the terms of payment, or (c) provide Seller with such evidence as
         Seller may request that any export or import license or permit has been
         issued (if such is the responsibility of Buyer), or (iv) inability on
         account of causes beyond the reasonable control of Seller to obtain
         necessary materials, necessary components or services. Seller shall
         notify Buyer of any such delay. The date of delivery or of performance
         shall be extended for a period equal to the time lost by reason of
         delay, plus such additional time as may be reasonably necessary to
         overcome the effect of such excusable delay. Seller shall notify Buyer,
         as soon as practicable, of the Service resumption date. If Seller is
         delayed by acts or omissions of Buyer, or by the prerequisite work of
         Buyer's other contractors or suppliers, Seller shall also be entitled
         to an equitable price adjustment.

                                       3

<PAGE>

4.2      If delay excused by this Article extends for more than one hundred and
         twenty (120) days and the parties have not agreed upon a revised basis
         for continuing the work at the end of the delay, including adjustment
         of the price, then either party (except where delay is caused by Buyer,
         in which event only Seller), upon thirty (30) days' written notice, may
         terminate the Amendment with respect to any uncompleted Services,
         whereupon Buyer shall promptly pay Seller's termination charges
         determined in accordance with Seller's standard accounting practices
         upon submission of Seller's invoices therefor.

                  5. Compliance With Laws, Codes And Standards

         Notwithstanding any other provisions herein, Buyer shall be responsible
         for the timely obtaining of any required authorization, such as an
         export license, import license, foreign exchange permit, work permit or
         any other governmental authorization, even though any such
         authorization may be applied for by Seller. Buyer and Seller shall
         provide each other reasonable assistance in obtaining required
         authorizations. Seller shall not be liable if any authorization is
         delayed, denied, revoked, restricted or not renewed and Buyer shall not
         be relieved thereby of its obligations to pay Seller for the work.

                           6. Limitation Of Liability

6.1      The total liability of Seller, on all claims of any kind, whether in
         contract, warranty, indemnity, tort (including negligence), strict
         liability, or otherwise, arising out of the performance or breach of
         the Amendment or use of any equipment shall not exceed the greater of
         US $10,000 or the Contract Price of a fixed price contract or the price
         of work completed for a time and materials or cost plus contract. All
         liability under the Amendment shall terminate upon the expiration of
         the Amendment.

6.2      In no event, whether as a result of breach of contract, warranty, tort
         (including negligence), strict liability, indemnity, or otherwise,
         shall Seller or its subcontractors or suppliers be liable for loss of
         profit or revenues, loss of use of the equipment or any associated
         equipment, cost of capital, cost of substitute equipment, facilities,
         services or replacement power, downtime costs, claims of Buyer's
         customers for such damages, or for any special, consequential,
         incidental, indirect or exemplary damages and Buyer shall indemnify
         Seller against such claims of Buyer's customers.

6.3      If Seller furnishes Buyer with advice or assistance concerning any
         products, systems or work which is not required pursuant to the
         Amendment, the furnishing of such advice or assistance will not subject
         Seller to any liability, whether in contract, indemnity, warranty, tort
         (including negligence), strict liability or otherwise.

                                       4

<PAGE>

6.4      For the purposes of this Article 6, the term "Seller" shall mean
         Seller, its affiliates, subcontractors and suppliers of any tier, and
         their respective agents and employees, whether individually or
         collectively.

6.5      The provisions of this Article 6 shall prevail over any conflicting or
         inconsistent provisions contained in any of the documents comprising
         the Amendment, except to the extent that such provisions further
         restrict Seller's liability.

                           7. Relationship of Parties

7.1      Seller is an independent contractor under this Amendment, as is each
         affiliate, agent or employee of Seller. Seller acknowledges that,
         except as authorized by Buyer on a case-by-case basis, Seller does not
         have the authority to obligate Buyer in any manner whatsoever.

7.2      Buyer's personnel shall remain employees of and shall be supervised
         solely by Buyer, and shall not be employees of Seller. Buyer shall not
         express or imply to any such personnel that they have any rights as
         employees of Seller and Buyer shall indemnify Seller against any costs,
         damages, and liabilities, including attorney fees that Seller may incur
         as a result of claims, suits, or actions by any such personnel,
         provided that such claims, suits, or actions not result from willful
         actions or inactions of Seller.

7.3      Each party and its employees shall comply with all rules, including
         safety, traffic and security, established by the other party for
         operations within the other party's location(s).

                     8. Expiration - Renewal - Termination

8.1      This Amendment shall automatically expire at the end of the term
         specified in Section 12 hereof unless specifically renewed prior
         thereto by mutual consent given in writing by the parties hereto.

8.2      This Amendment may be terminated prior to the completion of the term
         specified in Section 8 hereof:

         1)       By mutual consent given in writing by the parties hereto;

         2)       By either party at will with or without cause upon not less
                  than thirty (30) days' notice in writing by registered mail,
                  cable, or personal delivery to the other party, or

                                       5

<PAGE>

         3)       By Seller upon one (1) day's like notice in the event:

                  (i)      Buyer ceases to conduct its operations in the normal
                           course of business

                  (ii)     A receiver for Buyer is appointed or applied for, or
                           it otherwise takes advantage of an insolvency law, or

                  (iii)    Buyer breaches this Agreement or acts in any manner
                           deemed by the Seller to be detrimental to the best
                           interests of Seller

         Without limitation, the foregoing events shall be deemed to be cause
         for termination by the Seller. Termination of the Seller shall not
         relieve either Party of any obligation arising out of work performed
         prior to termination.

                               9. General Clauses

9.1      Except as provided in the Article entitled "Limitation of Liability,"
         these provisions are for the benefit of the parties hereto and not for
         any other third party.

9.2      Except as expressly set forth herein, this Amendment in no way alters
         or affects any other terms of the March 17 Agreement, which otherwise
         remains in full force and effect.

9.3      The invalidity in whole or in part of any part of the Amendment shall
         not affect the validity of the remainder of the Amendment.

9.4      Failure to insist upon strict compliance with any of the terms in this
         Amendment (by way of a waiver of a term or of a breach) by either party
         hereto shall not be deemed to be a continuous waiver in the event of
         any future breach or waiver of any term in this Amendment.

9.5      The following Articles shall survive termination of the Amendment:
         Article 6 (Limitation of Liability), Article 9 (General Clauses) and
         Article 11 (Governing Law and Disputes).

9.6      In the event of a conflict between the terms of this Amendment and any
         other ancillary document related thereto, the terms of this Amendment
         shall apply.

9.7      The Amendment together with the March 17 Agreement represents the
         entire agreement between the parties and no modification, amendment,
         rescission, waiver or other change shall be binding on either party
         unless assented to in writing by the parties' authorized
         representatives. Any oral or written representation, warranty, course
         of dealing or trade usage not contained or referenced herein shall not
         be binding on either party. Each party agrees that is has not relied
         on, or been induced by, any representations of the other party not
         contained in the Amendment.

                                       6

<PAGE>

               10. Transfer to Subsidiary or Affiliated Companies

Seller may assign or novate its rights and obligations regarding the Amendment,
in part or in whole, to one or more of its wholly owned subsidiaries upon
written notice to Buyer setting forth the effective date of such assignment or
novation. Upon the effective date of said assignment or novation, all of the
rights and obligations of Seller under this Amendment shall vest solely in
Seller's respective subsidiaries. Buyer agrees to execute such documents as may
be necessary to effect the assignment or novation. Seller guarantees the
performance of its subsidiaries after the assignment or novation takes effect.
The delegation or assignment by Buyer of any or all of its duties or rights
under this order without Seller's prior written consent shall be void.

                         11. Governing Law and Disputes

This Amendment shall be construed and interpreted in accordance with the laws of
New York, provided that any provision of such law invalidating any provision of
this Amendment or modifying the intent of the Parties as expressed in the terms
of this Amendment shall not apply (the "Governing Law of the Amendment"). Any
dispute which cannot be settled by agreement of the Parties shall be submitted
to arbitration to be held in New York, NY in accordance with the procedures set
forth by the American Arbitration Association.

                                        7

<PAGE>

                               12. Effective Date

This Amendment shall become effective as of the day and year first written above
and shall continue in full force and effect until December 31, 2000, unless
otherwise terminated earlier pursuant to the terms herein or extended by mutual
written agreement of the parties.

IN WITNESS WHEREOF the Parties have caused this document to be executed by their
authorized representatives on the date first above written.

SELLER                                          BUYER
GENERAL ELECTRIC COMPANY                        PLUG POWER INC.

By                                              By

   /s/ William F. Lopes                            /s/ Gregory A. Silvestri

      (Signature)                                       (Signature)
 $
   William F. Lopes                                 Gregory A. Silvestro

   (Printed Name)                                      (Printed Name)

  General Manager-- Emerging Technologies            Chief Operating Officer
     (Title)                                              (Title)

 September 18, 2000                                   September  , 2000
      (Date)                                                 (Date)

                                        8

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