Document:

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                                                                   EXHIBIT 10.20

[ACTIVE POWER LOGO]                              [POWERWARE LOGO]
                                                 POWERING THE WORLD

                              Contract No. AP-01-01

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                                    CONTRACT
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                              DISTRIBUTOR AGREEMENT

                                     BETWEEN

                              POWERWARE CORPORATION

                                       AND

                               ACTIVE POWER, INC.
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                              DISTRIBUTOR AGREEMENT

                                Table of Contents
                                -----------------

Article  Description                                                    Page No.
-------  -----------                                                    --------

1.0 - Scope of Agreement.......................................................5
         1.1      Grant of License and Appointment.............................5
         1.2      Agents License...............................................5

2.0 - Term of Agreement........................................................6
         2.1      Term.........................................................6

3.0 - Marketing................................................................6
         3.1      Joint Marketing Efforts......................................6

4.0 - Orders for Active Power Products.........................................6
         4.1      Orders.......................................................6
         4.2      Acceptance of Orders.........................................6
         4.3      Survival of Orders...........................................7
         4.4      No Agent Orders..............................................7
         4.5      Preprinted Order Terms.......................................7
         4.6      Order Forecast...............................................7

5.0 - Delivery, Installation, Title and Risk of Loss...........................7
         5.1      Delivery and Installation....................................7
         5.2      Delivery Charges.............................................7
         5.3      Title and Risk of Loss.......................................7

6.0 - Prices, Payment, and Discount Rights.....................................8
         6.1      Active Power Products Pricing................................8
         6.2      Payment of Charges...........................................8
         6.3      Discounts....................................................8
         6.4      Training Systems.............................................8

7.0 - Active Power Warranties..................................................8
         7.1      Active Power Warranties......................................8
                  7.1.1    License Authority...................................8
                  7.1.2    No Liens or Claims..................................9
                  7.1.3    Active Power Products Warranty......................9
                  7.1.4    Notice of Warranty Period...........................9
                  7.1.5    Infringement Warranty...............................9
                  7.1.6    Maintenance Assistance.............................10
                  7.1.7    Warranty Service...................................10

8.0 - WARRANTIES OF THE PARTIES...............................................10
         8.1      Warranties of the Parties...................................10
                  8.1.1    Obligation Warranty................................10
                  8.1.2    No Authority.......................................10
                  8.1.3    No Restrictions....................................10
                  8.1.4    Valid Agreement....................................11
                  8.1.5    No Prohibitions....................................11
                  8.1.6    Corporate Authority................................11
                  8.1.7    Exclusions.........................................11
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                          Table of Contents (Continued)
                          -----------------

Article  Description                                                    Page No.
-------  -----------                                                    --------

9.0 - MISCELLANEOUS...........................................................11
         9.1      No Partnership..............................................11
         9.2      Publicity...................................................11
         9.3      Confidential Information....................................11
         9.4      Limitation of Liability.....................................12
         9.5      Trademarks..................................................12
         9.6      Administration of Agreement.................................12
         9.7      Default.....................................................12
         9.8      Assignment and Subcontracting Prohibited....................12
         9.9      Governing Law...............................................13
         9.10     Force Majeure...............................................13
         9.11     Compliance with Laws........................................13
         9.12     Severability................................................13
         9.13     Notices.....................................................13
         9.14     Dispute Resolution..........................................13
         9.15     Rights Upon Orderly Termination.............................13
         9.16     Termination of Orders.......................................14
         9.17     Entire Agreement............................................14
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                                TABLE OF EXHIBITS

Exhibits          Description                                           Page No.
--------          -----------                                           --------
  A               Description of Active Power Products                     15

  B               Discount Schedule                                        16

  C               Active Power Product Warranties                          17

  D               POWERWARE  Marketing Plan                                18

  E               POWERWARE Approved Agents                                19

  F               Active Power Training                                    22

  G               Warranty and Post-Warranty Service (Attachments 1-6)     23
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Contract No. ES-98-045

                              DISTRIBUTOR AGREEMENT

         THIS DISTRIBUTOR AGREEMENT (hereinafter referred to as the "Agreement")
is entered into by and between Powerware Corporation, with a place of business
at 8609 Six Forks Road, Raleigh North Carolina, 27615 (hereinafter referred to
as "POWERWARE") and ACTIVE POWER, INC, with a place of business at 11525
Stonehollow Drive, Suite 110, Austin, Texas 78758 (hereinafter referred to as
"Active Power"), and is effective on the date it is executed by the latter of
POWERWARE and Active Power.

                               W I T N E S S E T H
                               -------------------

         WHEREAS, POWERWARE desires to obtain a non-exclusive right to market
and distribute standard Active Power Products; and

         WHEREAS, Active Power is willing to grant POWERWARE a non-exclusive
right and license to market and distribute its standard products;

         NOW THEREFORE, in consideration of the representations and agreements
contained herein, the parties hereby covenant and agree as follows:

                        ARTICLE 1.0 - SCOPE OF AGREEMENT
                                      ------------------

1.1      Grant of License and Appointment. Subject to (and only during the term
         of) this Agreement, Active Power hereby appoints and grants to
         POWERWARE and its Agents, as defined below, and POWERWARE hereby
         accepts from Active Power, a non-transferable, royalty-free, right and
         license to: (i) non-exclusively purchase, market, distribute and resell
         the Active Power flywheel products described in the attached Exhibit A
         (hereinafter referred to as either the "standard CleanSource products
         from Active Power" or the "POWERWARE Flywheel Systems" line of Active
         Power Products, depending on how they are designated in Exhibit A), to
         end-users located world-wide (hereinafter referred to as the "End
         Users"); and (iii) incorporate private and/or co-labeling of the Active
         Power Products using POWERWARE logos. Such "standard CleanSource
         products from Active Power" and the "POWERWARE Flywheel Systems" line
         of Active Power Products" may collectively be referred to as "Active
         Power Products." During the term of this Agreement, POWERWARE and its
         authorized agents may hold themselves out to the public as an
         authorized distributor, reseller, and service provider of Active Power
         Products. Active Power agrees that upon execution of this Agreement, it
         will take the necessary steps to ensure that only POWERWARE, General
         Electric Company and Caterpillar Inc. shall have the non-exclusive
         rights in North America, granted hereunder, to the standard CleanSource
         products from Active Power.

1.2      Agents License. It is understood and agreed that Active Power hereby
         grants as a sublicensee to each of the Agents listed in Exhibit E below
         the same non-transferable, royalty free right and license granted to
         POWERWARE above and that the Agents shall be entitled to all the
         licenses, benefits, warranties, discounts, and rights granted to them
         only through POWERWARE by Active Power under this Agreement; provided,
         however, that the foregoing license is contingent upon and subject to
         each Agent being an authorized representative of POWERWARE and bound by
         the terms of said Agreement. However, Active Power will have no direct
         obligation to any such Agent and POWERWARE will be fully responsible
         for performance and compliance by all Agents and all payments and
         contact from such Agents to Active Power will be through POWERWARE.
<PAGE>

                        ARTICLE 2.0 - TERM OF AGREEMENT
                                      ------------------

2.1      Term. This Agreement shall commence on the effective date of the
         Agreement and, except as otherwise provided herein, shall continue for
         an initial term through March 31, 2003.. This Agreement will be
         extended in additional one (1) year terms, given performance by both
         parties as outlined below, except that either party may terminate this
         agreement by giving the other written notice of termination not less
         than sixty (60) days prior to the expiration of the initial term or any
         renewal term.

                            ARTICLE 3.0 - MARKETING
                                          ----------

3.1      Joint Marketing Efforts. The parties agree to cooperate in the joint
         marketing of the Active Power Products as mutually agreed in writing by
         the parties (Exhibit D). Each party shall be responsible for its own
         travel, living and personnel expenses with respect to the joint
         marketing of the Active Power Products. Advertising costs shall be
         borne by each party as mutually agreed in advance. POWERWARE makes no
         guarantee or commitment as to the success of any marketing effort, and
         POWERWARE has no obligation to Active Power whatsoever other than as
         provided in this Agreement.

                 ARTICLE 4.0 - ORDERS FOR ACTIVE POWER PRODUCTS
                               --------------------------------

4.1      Orders. No Active Power Products shall be provided to POWERWARE, its
         Agents or the End-User by virtue of this Agreement alone. Active Power
         Products must be requested through issuance of a POWERWARE standard
         purchase order (hereinafter referred to as the "Order"). Each Order
         shall reference the POWERWARE contract number assigned to this
         Agreement and shall include the following minimum information:

         A)       The date of the Order and the Order number;
         B)       The complete list of the Active Power Products covered by the
                  Order, specifying quantity, type, model number and description
                  for each model number;
         C)       The purchase price for the Active Power Products and the
                  applicable discounts available to POWERWARE;
         D)       The POWERWARE, Agent or End-User location to which the Active
                  Power Products are to be delivered and, if different, the
                  location where the Active Power Products are to be initially
                  installed or used;
         E)       Any applicable site specifications for the Active Power
                  Products;
         F)       The requested delivery date for the Active Power Products;
         G)       Any non-standard terms and conditions specifically applicable
                  to the Order only.

4.2      Acceptance of Orders. Within ten (10) business days after Active
         Power's receipt of an Order, Active Power shall accept the Order in
         writing and shall return a legible copy of the accepted Order to the
         POWERWARE; provided, however, that if an Order fails to provide all
         required ordering information or incorrectly states prices or other
         material information relative to the Order, or if the Order is not
         consistent with Active Power's then current lead time requirements,
         Active Power may reject the Order by promptly giving written notice of
         rejection stating in detail the reasons for rejection and the
         modifications necessary to make the Order acceptable to Active Power.
         Active Power shall make no changes, amendments, modifications,
         additions or deletions to an Order without the prior written consent
         POWERWARE. Acceptance of an Order shall bind Active Power to use
         reasonable efforts to honor delivery dates, amounts and other ordering
         information shown on the Order, including supplemental provisions
         contained therein. The effective date of an Order shall be the date on
         POWERWARE receives an accepted copy of the Order without modification
         or amendment.
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4.3      Survival of Orders. Notwithstanding any provision contained herein to
         the contrary (and unless otherwise elected by Active Power in the case
         of termination of this Agreement for POWERWARE's breach), the terms and
         conditions of this Agreement shall remain in full force and effect
         (with respect to the applicable Order) until the expiration of the term
         of any proper accepted Order under this Agreement which was received
         prior to the termination or other expiration of this Agreement,
         provided that the delivery date requested is within 90 days of
         termination or expiration of this Agreement. It is understood and
         agreed to by the parties hereto that the terms and conditions of this
         Agreement shall apply to all Orders hereunder with the exception of any
         nonstandard terms and conditions specifically applicable to the
         particular Order only that are conspicuously outlined on the face of
         the Order in variance herewith, subject to Active Power's right to
         reject any such Order containing terms and conditions varying from
         those contained herein.

4.4      No Agent Orders. This Agreement allows for orders to be issued only by
         POWERWARE. Active Power will not be required to accept orders directly
         from Agents of POWERWARE.

4.5      Preprinted Order Terms. THE PREPRINTED TERMS AND CONDITIONS APPEARING
         ON AN ORDER, ACKNOWLEDGMENT, INVOICE, DELIVERY OR MAINTENANCE FORM
         SHALL NOT APPLY TO OR BECOME PART OF THE ORDER REGARDLESS OF ANY
         STATEMENT TO THE CONTRARY CONTAINED IN THE ORDER FORM OR OTHER FORM.

4.6      Order Forecast. POWERWARE shall provide to Active Power a mutually
         agreed upon rolling 12-month forecast every 90 days. This shall be a
         non-binding forecast except that Active Power shall not be obligated to
         deliver more than 150% of the preliminary forecasted amount.

          ARTICLE 5.0 - DELIVERY, INSTALLATION, TITLE AND RISK OF LOSS
                        ----------------------------------------------

5.1      Delivery and Installation. Active Power shall use reasonable commercial
         effort to deliver the Active Power Products, all applicable manuals and
         documentation, to the address specified in an Order no later than the
         date set forth on such Order. Equipment shall be shipped F.O.B. Active
         Power's facility in Austin, Texas. Unless POWERWARE designates a
         carrier in the Order, Active Power shall select the carrier, provided,
         however, that the carrier shall not be construed to be an agent of
         Active Power. Active Power shall provide POWERWARE not less than ten
         (10) days prior written notice as to the scheduled delivery date for
         the Active Power Products. Active Power shall notify POWERWARE
         immediately in writing in advance of any delay in delivery when such
         delay first becomes apparent to Active Power.

5.2      Delivery Charges. Prices provided from Active Power do not include
         installation, freight and handling charges unless specifically listed.
         Unless Active Power is furnished with a proper exemption certificate,
         there shall be added to the amounts shown on the Quotation a charge for
         all taxes, however designated, levied or based on this Agreement or the
         Equipment.

5.3      Title and Risk of Loss. Risk of loss for the Active Power Products
         shall pass to POWERWARE upon shipment of the Active Power Products.
         Title to the Active Power Products shall pass to POWERWARE, free and
         clear of any lien, claim and/or encumbrances upon payment in full of
         the purchase price for the Active Power Products.
<PAGE>

               ARTICLE 6.0 - PRICES, PAYMENT, AND DISCOUNT RIGHTS
                             ------------------------------------

6.1      Active Power Products Pricing. The prices for the Active Power Products
         are listed on the attached Exhibit A and will be restated on any Order
         issued hereunder Each 12-month period POWERWARE shall receive a
         specific discount from the list price based on the annual volume
         forecast (entered by POWERWARE on the Effective Date of this Agreement
         and its respective anniversaries). That discount shall apply to all
         POWERWARE purchases made during that specific 12-month period. In the
         event actual purchases made (and payments received) during the year do
         not meet the forecasted amounts by the anniversary of the Effective
         Date, Active Power shall adjust the discount for the following 12-month
         period to reflect the miss in volume in the preceding 12-month period.
         Below is an example operation of Active Power's discount pricing
         schedule:

         Example:
         [****]

6.2      Payment of Charges. The charges for the Active Power Products ordered
         hereunder shall be invoiced directly to POWERWARE, upon shipment of the
         Active Power Products to installation address indicated in such Order.
         Payment of the invoice for the Active Power Products shall be due
         within forty-five (45) days after of the invoice. POWERWARE shall be
         solely responsible and liable for payment of any Active Power Products
         ordered hereunder. Unless otherwise agreed in writing, all payments due
         hereunder shall be made within 30 days of the date of shipment of
         Equipment or performance of Services. Late payments shall accrue
         interest at the lower of (a) 1 1/2% per month or (b) the lawful maximum
         rate on the unpaid balance in the state in which the Equipment is
         located. POWERWARE hereby guarantees Active Power a security interest
         in Equipment to secure full payment hereunder.

6.3      Discounts. Purchases made (as evidenced by payments received) in a
         particular year apply only to the annual volume for that particular
         year and shall not carry over nor apply to a different year's volumes.

6.4      Training Systems. Active Power will sell a sufficient number of systems
         at cost to Powerware if and when Powerware determines it is necessary
         to establish service training capability at Powerware Global Services
         training centers,

                     ARTICLE 7.0 - ACTIVE POWER WARRANTIES
                                   -----------------------

7.1      Active Power Warranties. In addition to any other warranties and
         representations contained herein, Active Power shall provide the
         warranties set forth below with respect to the Active Power Products:

         7.1.1    License Authority. Active Power represents and warrants that
                  it has the absolute right to grant the license and sublicense
                  rights granted herein to POWERWARE and to allow POWERWARE to
                  market and re-sell the Active Power Products hereunder to
                  End-Users in accordance with the provisions of this Agreement.

**Confidential treatment has been requested for the portions of this agreement
marked by asterisks. Omitted material for which confidential treatment has been
requested has been filed separately with the Securities and Exchange
Commission.**
<PAGE>

         7.1.2    No Liens or Claims. Active Power warrants and represents that
                  the Active Power Products are not subject to any lien, claim
                  or encumbrance inconsistent with the license rights granted
                  herein and that POWERWARE and the End-User shall be entitled
                  to possess and use the Active Power Products, without any
                  interruption by Active Power or any party claiming by or
                  through Active Power, provided that POWERWARE and the End-User
                  shall duly perform its obligations hereunder.

         7.1.3    Active Power Products Warranty. It is understood and agreed
                  that all Active Power Equipment sold to End-Users pursuant to
                  this Agreement shall be warranted in accordance with the
                  Active Power Equipment warranty set-forth on the attached
                  Exhibit C, which shall be passed through and assigned to the
                  End-User, provided that in no event will the warranty extend
                  more than 18 months after shipment from Active Power.
                  Notwithstanding anything to the contrary in this Agreement, it
                  is understood and agreed that POWERWARE shall have no
                  liability or responsibility what-so-ever with respect to the
                  warranties for the Active Power Equipment and Active Power
                  Software and that Active Power shall either directly or
                  through POWERWARE, support the End-Users with the respective
                  warranty services set-forth therein. POWERWARE shall not
                  expand, modify, or amend the warranties without the prior
                  written consent of Active Power.

         7.1.4    Notice of Warranty Period. When POWERWARE passes through
                  Active Power's warranty to an End-User as provided above,
                  POWERWARE agrees to notify the End-User of the actual warranty
                  period available to the End-User and the level of warranty
                  service and other details of warranty on any Active Power
                  Products sold by POWERWARE to and End-User, POWERWARE will
                  also notify an End-User if no Active Power warranty is passed
                  through.

         7.1.5    Infringement Warranty. Active Power warrants and represents
                  that the Active Power Products, including without limitation
                  each component and any unit or part thereof, are not subject
                  to any claim of infringement under any U.S. patent, trademark,
                  tradename, service mark, copyright, trade secret or other
                  proprietary right of any third party. In the event of a third
                  party claim against POWERWARE and/or the End-User asserting a
                  such a patent, copyright, trade secret or other proprietary
                  right violation involving the Active Power Products, Active
                  Power shall defend or settle the claim, at its expense, and
                  shall indemnify POWERWARE and/or the End-User against any
                  loss, cost, expense of liability resulting from or arising out
                  of payments to third parties due to the claim, whether or not
                  the claim is successful, provided that POWERWARE and/or the
                  End-User notifies Active Power in writing within sixty (60)
                  days after POWERWARE and/or the End-User first receives
                  written notice of the claim and gives Active Power necessary
                  authority, available information, and reasonable assistance
                  for the defense or settlement of the claim, over which Active
                  Power will have sole control. If the Active Power Products are
                  in Active Power's opinion likely to or do become the subject
                  of a claim of infringement or violation of a patent,
                  copyright, trade secret or other proprietary right of a third
                  party, Active Power shall have the option to, at its expense
                  and without diminishing its foregoing obligations, either
                  procure for POWERWARE and/or the End-User the right to
                  continue using the Active Power Products or accept the return
                  of the Active Power Products and promptly refund to POWERWARE
                  and/or the End-User the original amount paid for the equipment
                  by POWERWARE and/or the End-User to Active Power with respect
                  to the Active Power Products so effected. Each party shall in
                  all events be
<PAGE>

                  required to mitigate its damages. These warranties and
                  indemnities will survive the termination or expiration of this
                  Agreement and such indemnity is POWERWARE's sole remedy for
                  the types of issues referred to in this section. In the event
                  of any claim, demand or suit based upon an alleged breach of
                  any of Active Power's warranties under this 7.1.5 but subject
                  to the foregoing, POWERWARE will have the right to participate
                  in the defense of the same through counsel of POWERWARE'
                  choosing at its own expense, but no settlement will be
                  affected without Active Power's prior written consent, which
                  consent Active Power will not unreasonably withhold or delay.
                  Active Power and POWERWARE agree to notify each other promptly
                  of any third party claim, and further agree to fully cooperate
                  in the defense thereof.

         7.1.6    Maintenance Assistance. Active Power will provide
                  documentation to POWERWARE for purposes of providing
                  maintenance on Active Power products. Active Power will
                  provide this documentation in both written and electronic form
                  as well grant copyright reproduction of materials to POWERWARE
                  for said maintenance purposes. Active Power will also provide
                  free maintenance training classes to POWERWARE as set forth in
                  Exhibit F, and additional classes may be provided as requested
                  by POWERWARE at the then published training courses prices.

         7.1.7    Warranty Service. POWERWARE service personnel or
                  Powerware-authorized service providers shall provide all
                  warranty service for the Active Power Products sold by
                  POWERWARE. Active Power shall reimburse POWERWARE for agreed
                  upon expenses for labor, and Active Power's warranty shall
                  govern costs related to parts. Warranty service terms and
                  conditions are set forth in Exhibit G.

                    ARTICLE 8.0 - WARRANTIES OF THE PARTIES
                                 -------------------------

8.1      Warranties of the Parties. In addition to any other warranties and
         representations contained herein, each party hereby makes the following
         representations and warranties:

         8.1.1    Obligation Warranty. Each party warrants and represents that
                  it will perform its obligations hereunder in a good,
                  professional, workmanlike and competent manner, in accordance
                  with applicable professional standards.

         8.1.2    No Authority. Except as otherwise provided herein, it is
                  expressly understood and agreed that neither party has any
                  right or authority to nor shall either party directly or
                  indirectly incur any obligation or responsibilities on behalf
                  of the other party or commit the other party to any matter or
                  understanding or make any warranties or representations with
                  respect to the Active Power Products or other activities
                  hereunder, each party being deemed to be independent. This
                  Agreement shall not create any agency or other similar
                  relationship between the parties.

         8.1.3    No Restrictions. Neither the execution and delivery of this
                  Agreement nor the consummation of the transactions
                  contemplated hereby nor the fulfillment of or compliance with
                  the provisions of this Agreement will violate any corporate
                  restriction to which said party is subject or conflict with or
                  result in a breach of or constitute a default under any of the
                  terms, conditions or provisions of any agreement or instrument
                  to which said party is a party or by which said party is
                  bound.
<PAGE>

         8.1.4    Valid Agreement. This Agreement is a legal, valid and binding
                  agreement of said party and, assuming that it is enforceable
                  against each party hereto, is enforceable against the other
                  party in accordance with its terms, except as such
                  enforceability may be limited by bankruptcy, insolvency,
                  reorganization or similar laws relating to or affecting the
                  enforcement of creditors' rights generally or by general
                  equitable principles, regardless of whether such
                  enforceability is considered in a proceeding in equity or at
                  law.

         8.1.5    No Prohibitions. To each parties best knowledge, there is no
                  pending or threatened action, suit or other proceeding or, any
                  investigation before or by any governmental agency which might
                  materially and adversely affect the financial condition or
                  business prospects of said party or which questions the
                  validity of any action taken or to be taken by said party
                  pursuant to or in the pursuit of this Agreement.

         8.1.6    Corporate Authority. Each party hereto is a corporation duly
                  incorporated and validly existing under the laws of a state in
                  The United States of America, and has full legal right, power
                  and authority to enter into this Agreement and to consummate
                  the transactions provided for herein; and this Agreement has
                  been duly authorized, executed and delivered by said party.

         8.1.7    Exclusions. THE WARRANTIES EXPRESSED HEREIN ARE IN LIEU OF ALL
                  OTHER WARRANTIES EXPRESSED OR IMPLIED, INCLUDING BUT NOT
                  LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS
                  FOR A PARTICULAR PURPOSE.

                          ARTICLE 9.0 - MISCELLANEOUS
                                        -------------

9.1      No Partnership. Nothing contained herein shall constitute a partnership
         or joint venture nor make either party the agent or representative of
         the other. Except as otherwise provided herein, neither party has
         authority to bind the other, incur any liabilities on behalf of the
         other, nor to direct the employees of the other. Neither party shall
         have the authority to vary, alter or enlarge any of the other party's
         obligations hereunder or, except as otherwise provided herein, make
         representations, warranties or guarantees on behalf of the other.

9.2      Publicity. Each party shall use its best efforts not to disclose to any
         third party without the prior written consent of the other, the terms
         of this Agreement except as required by law or by governmental
         regulations, requirements or orders, or as may be necessary to
         establish or assert its rights hereunder and except on a confidential
         basis to a party's professional advisors and potential
         investors/acquirers. POWERWARE agrees to cooperate with Active Power in
         selective, mutually agreed upon advertisements or press releases of
         installations to further marketing efforts. POWERWARE and Active Power
         also agree to cooperate on a press release to announce this agreement
         as well as the CleanSource2 POWERWARE Line of Active Power Products.

9.3      Confidential Information. Each party agrees that if any confidential or
         proprietary information, which is clearly marked as being confidential
         or proprietary of the other party which comes into its possession, any
         such material and information will be held in confidence, and such
         party will not make any use thereof other than for the performance of
         this Agreement, will release it only to employees requiring such
         information, and will not release or disclose it to any other party.
<PAGE>

         The foregoing will not apply to any information which is already known
         to or in the possession of the receiving party without restriction on
         disclosure at the time of disclosure by the disclosing party, is
         independently developed by the receiving party without reference to the
         confidential information of the disclosing party, or is or becomes
         public knowledge through no fault of the receiving party. If either
         party is required by applicable law, rule, regulation or lawful order
         or ruling of any court, government agency or regulatory commission to
         disclose any confidential information of the other party, then the
         receiving party agrees that it will provide the disclosing party with
         prompt written notice of such request(s) to enable the disclosing party
         to seek an appropriate protective order or take steps to protect the
         confidentiality of such confidential information.

9.4      Limitation of Liability. Neither party shall be liable to the other for
         any indirect, incidental, consequential or special damages, including,
         without limitation, any loss of revenues or loss of profits (other than
         payments under this Agreement) or for cost of procurement of substitute
         goods or services.

9.5      Trademarks. Active Power hereby grants to POWERWARE the non-exclusive
         right and license to market the Active Power Products under Active
         Power's existing trademarks for the applicable Active Power Products in
         any manner approved by Active Power.

9.6      Administration of Agreement. Each party hereby designates its employees
         identified below as its contract administrator for this Agreement. The
         contract administrator(s) shall be responsible for representing their
         respective employers in contractual and commercial matters relative to
         the administration of this Agreement. Each party may change its
         designated administrator(s) by giving not less than ten (10) days prior
         written notice of its new contract administrator to the other party.

         POWERWARE Administrator:                 Active Power Administrator:
         ------------------------                 ---------------------------

         Barry J Needle                           Bruce Akins
         Powerware Corporation                    Active Power Incorporated
         8609 Six Forks Road                      11525 Stonehollow Drive
         Raleigh, N.C. 27615                      Suite 119
                                                  Austin, TX  78758

         Ph: 919-870-3045                         804-530-8457
         Fax: 919-870-3450                        804-530-3314
         Email: Barry.Needle@psd.invensys.com     Email: Bakins@activepower.com

9.7      Default. If either party shall default in the performance of its
         obligations under this Agreement, including but not limited to
         non-delivery and nonpayment, and such default continues for a period of
         thirty (30) calendar days after the defaulting party receives written
         notice of the default from the non-defaulting party, then the
         non-defaulting party may terminate this Agreement and/or exercise any
         right or remedy provided by law or equity.

9.8      Assignment and Subcontracting Prohibited. Except as provided herein,
         either party shall not assign this Agreement or its obligations
         subcontracted without the prior written consent of the other party,
         except to an acquirer of substantially all its business or assets. Any
         assignment or subcontracting in violation of this provision shall be
         deemed null and void.
<PAGE>

9.9      Governing Law. This Agreement shall be governed by, subject to, and
         construed in all respects in accordance with the laws of the State of
         Texas, United States of America.

9.10     Force Majeure. Neither party shall be deemed to be in default of any
         provision of this Agreement, or for failures in performance, resulting
         from acts or events beyond the reasonable control of such party. Such
         acts shall include but not be limited to acts of God, civil or military
         authority, civil disturbance, war, strikes, fires, other catastrophes,
         or other events beyond the party's reasonable control.

9.11     Compliance with Laws. The parties shall comply with, and agree that
         this Agreement is subject to, all applicable federal, state, and local
         laws, rules and regulations, and all amendments thereto, now enacted or
         hereafter promulgated in force during the term of this Agreement.

9.12     Severability. If any of the provisions hereof shall be deemed invalid
         or unenforceable by any tribunal with competent jurisdiction, the
         remaining provisions of the Agreement, and the application of such
         invalid or unenforceable provisions to persons and circumstances other
         than to those to which they were held invalid, shall not be affected
         thereby.

9.13     Notices. All notices and Orders permitted or required to be given under
         this Agreement shall be in writing and shall be deemed duly given upon
         personal delivery or transmitted by facsimile machine to the address or
         facsimile numbers set-forth below. All notices shall be delivered or
         sent to the other party at the address or facsimile numbers shown below
         or to any other facsimile number as the party may designate by ten (10)
         days prior written notice given in accordance with this provision.

         If to POWERWARE:                         If to Active Power:
         ----------------                         -------------------

         Barry J Needle                           VP Sales
         Powerware Corporation                    Active Power Incorporated
         8609 Six Forks Road                      11525 Stonehollow Drive
         Raleigh, N.C. 27615                      Suite 110
                                                  Austin, TX  78758

         Ph: 919-870-3045                         512 836-6464
         Fax: 919-870-3450                        512 836-4511
         Email: Barry.Needle@psd.invensys.com     Email: Bott@activepower.com

9.14     Dispute Resolution. All disputes arising in connection with this
         Agreement shall be settled if possible through friendly consultation
         between the parties. If no settlement can be reached within thirty (30)
         days after a dispute arises, either party shall have the right and
         option to submit the dispute to binding arbitration. The arbitration
         shall take place in the Austin, Texas metropolitan area, and be
         conducted pursuant to the rules of the Arbitration Rules of the
         American Arbitration Association. The cost of the arbitration shall be
         borne equally by the parties. The decision of the arbitrators shall be
         final and binding on both parties and shall be enforceable in the
         courts of Texas.

9.15     Rights Upon Orderly Termination. Upon termination of this Agreement,
         POWERWARE and all of its agents shall discontinue demonstrating,
         marketing and distributing the Active Power Products; provided,
         however, that any End-User who previously acquired the right to use any
         Active Power Products under the terms of a Support Agreement granted
         hereunder, shall have
<PAGE>

         the continuing right to use such Active Power Products and to receive
         maintenance support services from Active Power as set-forth in the
         Support Agreement. Neither termination of this Agreement nor waiver of
         any right to terminate shall impair or limit any additional rights or
         remedies that either POWERWARE or Active Power may have in law or in
         equity.

9.16     Termination of Orders. Any Order may be terminated by POWERWARE at (and
         only at) any time more than 60 days prior to the scheduled delivery
         date on the Order by written notice to Active Power. No orders will be
         canceled by POWERWARE inside the 60 day scheduled delivery window
         without accompanying evidence of cancellation by POWERWARE's end user
         customer. Active Power will be entitled to the pro-rata share (based on
         total order value) of cancellation charges awarded to POWERWARE
         including all handling and restocking fees.

9.17     Entire Agreement. This Agreement and the exhibits hereto constitute the
         entire agreement between the parties concerning the subject matter
         hereof, superseding all prior negotiations and discussions.

         IN WITNESS WHEREOF, each of the parties has caused this Agreement to be
executed in duplicate originals by its duly authorized representative on the
respective dates entered below.

            Active Power, Inc.                               Powerware
            ("Active Power")                               ("POWERWARE")

By:   /s/                                        By: /s/
     ----------------------------------             ----------------------------
          (Signature)                                   (Signature)

Title:                                           Title:

Date:  October 28, 2001                          Date:  October 28, 2001
     ----------------------------------               --------------------------
<PAGE>

Contract No. AP-01-01                                                  EXHIBIT A

<TABLE>
<CAPTION>

                      DESCRIPTION OF ACTIVE POWER PRODUCTS
                       Standard CleanSource2(TM) Products

<S>                             <C>                                                                    <C>
CleanSource Model No.           Product Description                                                    List Price
CS2-250                         250 kW Flywheel Energy Storage System - Single Flywheel                   $[****]
CS2-500                         500 kW Flywheel Energy Storage System - Dual Flywheel                     $[****]
DSC-250                         OPTION, DISCONNECT SWITCH, CS2-250                                        $[****]
DSC-500                         OPTION, DISCONNECT SWITCH, CS2-500                                        $[****]
CSView-2S                       CleanSource Monitoring and Display Software - Single User                 $[****]
CSView-2M                       CleanSource Monitoring and Display Software - 5 User                      $[****]
SNMP-2                          OPTION, SNMP, CS2                                                         $[****]
MBUS-2                          OPTION, MODBUS, CS2 TCP version                                           $[****]
MDM-2-115                       OPTION, MODEM, EXT I/F,115V,FACTORY,CS2                                   $[****]
MDM-2-230                       OPTION, MODEM, EXT I/F, 230V,FACTORY,CS2                                  $[****]
MDMF-2-115                      OPTION, MODEM, EXT I/F, 115V,  FIELD, CS2                                 $[****]
MDMF-2-230                      OPTION, MODEM, EXT I/F, 230V,   FIELD, CS2                                $[****]
NET-2                           OPTION, ETHERNET CS2                                                      $[****]
ESD-2-R                         OPTION, REMOTE ESD, CS2                                                   $[****]
SEIS-2                          OPTION, SEISMIC TIE-DOWN, CS2 not including template                      $[****]
SEIS-2-T                        OPTION, SEISMIC TIE-DOWN TEMPLATE, CS2                                    $[****]
ACV-2-120                       OPTION, PROTECTED AC SOURCE, 120 VAC                                      $[****]

</TABLE>

                                       15
**Confidential treatment has been requested for the portions of this agreement
marked by asterisks. Omitted material for which confidential treatment has been
requested has been filed separately with the Securities and Exchange
Commission.**
<PAGE>

Contract No. AP-01-0       Discount Schedule                           EXHIBIT B

                Supplier Products, Pricing, and Volume Discounts
                              CleanSource2 Pricing

      --------------------------------------------------------------------
                                  Active Power
      --------------------------------------------------------------------
                                     [****]

POWERWARE's mutually agreed upon annual forecasted volume for the 12-month
period beginning on the Effective Date is [****].

                                       16

**Confidential treatment has been requested for the portions of this agreement
marked by asterisks. Omitted material for which confidential treatment has been
requested has been filed separately with the Securities and Exchange
Commission.**
<PAGE>

Contract No. AP-01-01                                                  EXHIBIT C

                         ACTIVE POWER PRODUCT WARRANTIES

LIMITED WARRANTY. Active Power warrants that, under normal use and service
pursuant to the applicable Product Manual, Equipment is free from defects in
parts and workmanship for a period of one (1) year from the date of shipment. If
in Active Power's opinion, Equipment fails to perform in accordance with
specifications set forth in the applicable Product Manual and such failure is
properly reported in writing to Active Power within the term of this warranty,
the defective part(s) will be repaired or replaced at the option of Active Power
with no charge for replacement parts. The cost for replacement equipment,
replacement equipment installation, and on site Active Power representative will
be provided at no charge by Active Power. Equipment repaired or replaced
pursuant to this Limited Warranty will be warranted for the unexpired portion of
the original warranty subject to all terms thereof. This Warranty applies to
Product installed world-wide. The coverage times in the United States are 8:00am
CST to 5:00pm CST Monday through Friday, excluding company paid holidays (a list
of company holidays will be provided upon request). The coverage times outside
of the United States are 8:00am to 5:00pm local time, Monday through Friday,
excluding company paid holidays (a list of company holidays will be provided
upon request).

THE WARRANTIES SET FORTH HEREIN ARE CONTINGENT UPON THE PROPER USE OF THE
EQUIPMENT IN ACCORDANCE WITH THE APPLICABLE PRODUCT MANUAL AND SPECIFICATIONS
FURNISHED IN WRITING BY ACTIVE POWER, AND DO NOT APPLY TO EQUIPMENT WHICH HAS
BEEN subject to neglect, accident, abuse, misuse, misapplication, incorrect
connection or WHICH has been REPAIRED OR MODIFIED BY PERSONS OTHER THAN THE
AUTHORIZED REPRESENTATIVES OF ACTIVE POWER.

Active Power's obligations under this Limited Warranty are conditioned upon
Purchaser's payment of all amounts due, and its obligations hereunder shall be
suspended for any period of time in which such amounts are past due. Any such
suspension of Active Power's warranty obligations shall not operate to extend
the term of the original warranty period specified herein.

Purchaser shall be exclusively responsible for, and ACTIVE POWER MAKES NO
WARRANTY OR REPRESENTATION WITH RESPECT TO, (a) determining whether the
Equipment will achieve the results desired by Purchaser or any third person, (b)
selecting, procuring, installing, operating and maintaining complementary
equipment to insure correct operation of the Equipment, (c) training Purchaser's
personnel in operation of the Equipment, (d) ensuring the accuracy of any
configuration design or implementation that utilizes the Equipment, and (e)
establishing adequate safety procedures for operation of the Equipment. In the
event of any alteration or attachment to the Equipment not authorized by Active
Power, Active Power shall have no liability or responsibility for: (a) any
hardware, software, equipment, or services provided by any persons other than
Active Power; (b) the proper functioning of the Equipment; or (c) damage caused
by any malfunction of the Equipment.

ACTIVE POWER DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
WITHOUT LIMITATION, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY
PURPOSE. ACTIVE POWER SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL, INDIRECT,
OR CONSEQUENTIAL DAMAGES OR FOR THE LOSS OF PROFIT, REVENUE, OR DATA OR COSTS OF
PROCUREMENT OF SUBSTITUTE PRODUCTS OR SERVICES ARISING OUT OF THE SUBJECT MATTER
OF THIS AGREEMENT.
<PAGE>

Contract No. AP-01-01                                                  EXHIBIT D

                                     [****]

                                       18
**Confidential treatment has been requested for the portions of this agreement
marked by asterisks. Omitted material for which confidential treatment has been
requested has been filed separately with the Securities and Exchange
Commission.**
<PAGE>

Contract No. AP-01-01                                                  EXHIBIT E

<TABLE>
<CAPTION>
                                              POWERWARE Approved Agents

-------------------------------------------------------------------------------------------------------------------------
Company Name                   Code     Rep Code      Address               Contact Name              Phone         Fax
-------------------------------------------------------------------------------------------------------------------------
<S>                            <C>      <C>      <C>                        <C>                   <C>           <C>
Alcan Electrical &              IPM       M59    6670 Arctic Spur              Chris Mues         (970)563-3737
Engineering Co.                                  Road
                                                 Anchorage, AK  99518
-------------------------------------------------------------------------------------------------------------------------
Applied Power Systems           PW/S      6AR    2300 Mill Park Drive Suite    Larry Boyd            (314)        (314)
                                                 114                                               427-5100     427-1080
                                                 Maryland Heights, MO  63043
-------------------------------------------------------------------------------------------------------------------------
Arthur N. Ulrich Company         IPM      L21    PO Box 11                     Arthur Ulrich         (740)        (740)
                                                 Etna, OH 43018                                    927-8244     927-6017
                                                 10340 Palmer Road, SW
                                                 Pataskala, OH 43062 (courier)
-------------------------------------------------------------------------------------------------------------------------
Bates & Associates, Inc.         PW       80C    16 Jeep Pl.    PO Box 934     Kenneth Bates         (508)        (508)
                                                 Mashpee, MA  02649                                477-3311     477-3561
-------------------------------------------------------------------------------------------------------------------------
Bates & Associates, Inc.         PW       80C    927 Temple Street             Steve May             (781)        (781)
                                                 Whitman, MA 02382                                 857-3600     857-2287
-------------------------------------------------------------------------------------------------------------------------
Blackmon Agency                PW/IPM     M47    4 Office Park Circle, Ste.    Fred Blackmon         (205)        (205)
                                                 304  Birmingham, AL 35223                          879-0100     879-0102
                                                 Box 531312
                                                 Birmingham, AL  35253
-------------------------------------------------------------------------------------------------------------------------
Capitol Power                   PW/S      7BW    46859 Harry Byrd Hwy.         Bob                   (703)        (703)
                                                 Suite 301                     Wilkens             433-2000     433-2128
                                                 Sterling, VA 20164            Kevin McGaughey
-------------------------------------------------------------------------------------------------------------------------
Circa, Inc.                     PW/S      9CI    709 Glenlake  Dr.             John Taylor           (405)        (405)
                                                 Edmund, OK  73013                                 751-8806     749-9322
-------------------------------------------------------------------------------------------------------------------------
Computer Enviroments            PW/S      4HI    92-123 Lei Papa Way           Mark Sumstine         (808)        (808)
                                                 Kapolei, HI  96707                                722-1815     672-6582
-------------------------------------------------------------------------------------------------------------------------
Computer Enviromental Systems   PW/S      70F    1700 Water Pl.,NW, Suite 311  Don Hamilton          (770)        (770)
                                                 Atlanta, GA  30339                                956-0091     953-6449
-------------------------------------------------------------------------------------------------------------------------
Computer Power Technology     IPM/PW/S    4CP    3949 S 200 E, Suite A-1       Max I. Carrigan       (801)        (801)
                                                 Salt Lake                                         263-8333     263-8380
                                                 City, UT  84107-1589
-------------------------------------------------------------------------------------------------------------------------
Connecticut Power Solutions      PW       8AA    10 Lamplighter Ln.            Joe Pagano            (860)        (860)
                                                 New Milford, CT  06776-2458                       354-6505     355-4065
-------------------------------------------------------------------------------------------------------------------------
Core Power                      PW/S      8CP    1717 Swede Road, Ste. 202     Jim Davis             (610)        (610)
                                                 Blue Bell, PA  19422          (ext.101)           279-0700     279-7404
                                                                               Scott Stilley
                                                                               (ext.109)
-------------------------------------------------------------------------------------------------------------------------
Critical Power Resource, LLC     PW       6AG    6070 Six Forks Road, Suite F  Ken Agee              (919)        (919)
                                                 Raleigh, NC                                       844-6447     844-9845
                                                 27609
-------------------------------------------------------------------------------------------------------------------------
Cunningham Company, Inc.         IPM      M57    310 Fernando Street, Ste.     Jack Schaefer         (949)        (949)
                                                 105   Newport Beach,                              723-7020     723-7022
                                                 CA  92661
-------------------------------------------------------------------------------------------------------------------------
Datatec, Inc.                   PW/S      81G    1100 Goffle Rd.               Sal Picheria          (973)        (973)
                                                 Hawthorne, NJ  07506                              423-0005     423-5702
-------------------------------------------------------------------------------------------------------------------------
Datatec, Inc.                   PW/S      81H    1100 Goffle Rd.               Sal Picheria          (973)        (973)
                                        New York Hawthorne, NJ  07506                              423-0005     423-5702
                                        Burroughs
-------------------------------------------------------------------------------------------------------------------------
David G.Leggett Co.              PW       6OL    909 King Ave. Ste. 200        David G. Leggett      (614)        (614)
                                                 Columbus, OH 43212                                299-0202     299-0303
-------------------------------------------------------------------------------------------------------------------------
Devices, Inc.                    IPM      M55    10300 N. Central              Ron Barrier           (972)        (972)
                                                 Expressway                                        250-2093     250-6870
                                                 Suite 330
                                                 Dallas, TX  75231
-------------------------------------------------------------------------------------------------------------------------
E Technologies, Inc.            PW/S      6ET    806 Sun Ridge Ln.             John Englhardt        (440)        (440)
                                                 Chargin Falls, OH  44022                          338-6184     338-6186
-------------------------------------------------------------------------------------------------------------------------

</TABLE>
<PAGE>

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------------------------------------
Company Name                   Code     Rep Code      Address               Contact Name              Phone         Fax
-------------------------------------------------------------------------------------------------------------------------
<S>                            <C>      <C>      <C>                        <C>                   <C>           <C>
E & T Equipment, Inc.            IPM      M54    15200 E. Girard               Dennis A.             (303)        (303)
                                                 Avenue                        Edwardson           617-6068     617-6117
                                                 Suite 2100
                                                 Aurora, CO  80014
-------------------------------------------------------------------------------------------------------------------------
Electrorep-Energy Products       IPM             2121 Schuetz Road             Tim Supranowich       (314)        (314)
                                                 PO Box 460200                                     991-2600     991-3852
                                                 St. Louis, MO 63146
-------------------------------------------------------------------------------------------------------------------------
Electrorep-Energy Products       IPM             5897 Raytown Road, Ste. 100   Cliff Niederbremer    (800)       ( 816)
                                                 Raytown, MO 64133                                 678-2606     358-9292
-------------------------------------------------------------------------------------------------------------------------
Electrorep-Energy Products       IPM             208 South Grand East          Ray Sitki             (217)        (217)
                                                 Springfield, IL 62704                             789-4504     789-0302
-------------------------------------------------------------------------------------------------------------------------
EMR Associates                  PW/S      7EM    9080 Barbee Lane #100         Alex Campen           (865)        (865)
                                                 Knoxville, TN  37923                              769-1998     769-2227
-------------------------------------------------------------------------------------------------------------------------
EMR Associates                  PW/S      7EM    PO Box 32741                  Alex Campen           (865)        (865)
                                                 Knoxville, TN 37930-0741                          769-1998     769-2227
-------------------------------------------------------------------------------------------------------------------------
EMR Associates                  PW/S      7EM    603 W. Iris Ave.              Mike Hughes           (615)        (615)
                                                 Nashville, TN  37204                              292-1977     292-1560
-------------------------------------------------------------------------------------------------------------------------
EMR Associates                  PW/S      7EM    PO Box 40741                  Mike Hughes           (615)        (615)
                                                 Nashville, Tn 37204-0747                          292-1977     292-1560
-------------------------------------------------------------------------------------------------------------------------
Grant Goodrich, Inc.             IPM      M24    1343 Wentworth Ave.           Grant Goodrich        (904)        (904)
                                                 Jacksonville, FL  33259                           287-0254     287-3614
                                                 (courier)
                                                 PO Box 24846
                                                 Jacksonville, FL 32241
-------------------------------------------------------------------------------------------------------------------------
H.M. Cragg Co.                  PW/S      6OR    9201 Penn Ave., Suite 25      Ben Platter,          (952)        (952)
                                                 Bloomington, MN  55431-2328   Sr.                 884-7775     884-7739
                                                                               Dale Jones
-------------------------------------------------------------------------------------------------------------------------
IndCom Systems                   IPM      M27    616 Papworth Ave.             Walter Case, Sr.      (504)        (504)
                                                 Metarie, LA  70005 (coourier)                     833-3833     833-3389
                                                 PO Box 24358
                                                 New Orleans, LA 70184
-------------------------------------------------------------------------------------------------------------------------
Innovative Electrical         IPM/PW/S    M28    PO Box                        Sandra Serbousek      (319)        (319)
Technology                                       10                            Larry Serbousek     662-9876     662-9877
                                                 1855 P Avenue
                                                 Conroy, IA  52220
-------------------------------------------------------------------------------------------------------------------------
Jones Engineering Sales         PW/S      7GE    1114 State St.                Gene Jones            (803)        (803)
                                                 Cayce, SC  29033                                  796-2920     791-8154
-------------------------------------------------------------------------------------------------------------------------
Kramer Datapower, Inc.          PW/S      61K    5410 Newport Dr., Unit 38     Bill Kramer           (847)        (847)
                                                 Rolling Meadows, IL  60008                        255-3140     255-3893
-------------------------------------------------------------------------------------------------------------------------
Kramer Datapower, Inc. WI       PW/S      61K    2223 N. 66th St.              Tom McCaughn          (414)        (414)
                                                 Wauwatosa, WI  53213                              443-6476     443-6478
-------------------------------------------------------------------------------------------------------------------------
LDP Associates, Inc.             IPM             10221 North 32nd Street,      Lyle Porter           (602)        (602)
                                                 Ste. N     Phoenix, AZ  85028                     494-7220     494-7170
-------------------------------------------------------------------------------------------------------------------------
Lynn Associates, Inc.         IPM/PW/S    81F    125 Wolf Road                 Bob                   (518)        (518)
                                                 Albany, NY 12205              Lynn                459-1239     459-4810
                                                                               Wendy Snyder
-------------------------------------------------------------------------------------------------------------------------
Lynn Associates, Inc.         IPM/PW/S    82F    6622 Main St., Suite 4        Richard Lynn          (716)        (716)
                                                 Buffalo, NY  14221                                631-0054     631-0101
-------------------------------------------------------------------------------------------------------------------------
Lynn Associates, Inc.         IPM/PW/S    8FF    2593 Wexford-Bayne Road       David Johnson         (724)        (724)
                                                 Ste. 303                                          933-8970     933-8980
                                                 Sewickley, PA 15143
-------------------------------------------------------------------------------------------------------------------------
Metro Power Associates, Inc.    IPM/S     8MP    3327 Jackson Avenue           Ed Bombeck            (516)        (516)
                                                 Wantagh, NY 11793                                 781-0623     781-0624
-------------------------------------------------------------------------------------------------------------------------
Metro Power Associates, Inc.    IPM/S     8MP    39 Valley Pond Road           Tony Ianello          (914)        (914)
                                                 Katonah, NY 10536                                 248-6808     248-7438
-------------------------------------------------------------------------------------------------------------------------
Nolan Power Group               PW/S      7NB    6141 River Road               Bobby Nolan           (504)        (504)
                                                 Harahan, LA                                       733-4300     733-2650
                                                 70123
                                                 Payments to: PO Box
                                                 54986  New Orleans,
                                                 LA  70154-4986
-------------------------------------------------------------------------------------------------------------------------
Northern Power Technologies     PW/S      6OJ    712 Columbus Street           Gary Johnson          (605)        (605)
                                                 Rapid City, SD  57701                             342-2520     343-9688
-------------------------------------------------------------------------------------------------------------------------
Performance Power Concepts    IPM/PW/S    4PG    14865 SW 74th Street, Ste.    Gary Lukas            (503)        (503)
                                                 260                                               672-9400     672-9300
                                                 Tigard, OR 97223
-------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                       20
<PAGE>

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------------------------------------
Company Name                   Code     Rep Code      Address                Contact Name           Phone         Fax
-------------------------------------------------------------------------------------------------------------------------
<S>                           <C>       <C>      <C>                         <C>                   <C>           <C>
Performance Power Concepts    IPM/PW/S    4PH    11000 NE 10th Street, Suite C Gary Lukas            (425)        (425)
                                                 Bellevue, WA  98004           John Hessen         638-0340      638-0341
-------------------------------------------------------------------------------------------------------------------------

Power Source                    PW/S      4SY    1150 South Bascom Ave., Ste.  Craig Waterman        (408)        (408)
                                                 29                                                279-7500     279-7501
                                                 San Jose, CA  95128
-------------------------------------------------------------------------------------------------------------------------
Precise Power                   PW/S      7PP    1714 E. Franklin Street       Steve Olson           (804)        (804)
                                                 Richmond, VA  23223                               225-5573     225-5574
-------------------------------------------------------------------------------------------------------------------------
Precise Power                   PW/S      7PP    1309 Simms                    Ray Cruz              (757)        (757)
                                                 Arch                                              482-4550     482-4571
                                                 Chesapeake, VA  23322
-------------------------------------------------------------------------------------------------------------------------
Precision Environment, Inc.     PW/S      7OU    1644 First Avenue, North      Robin Singh           (727)        (727)
                                                 St. Petersburg, FL 33713                          894-8200     822-7164
-------------------------------------------------------------------------------------------------------------------------
Precision Environment, Inc.     PW/S      7OU    692 Vistawilla Drive          Patrick Henry         (407)        (407)
                                                 Winter Springs, FL 32708                          971-2223     971-2225
-------------------------------------------------------------------------------------------------------------------------
Precision Environment,          PW/S      7UU    3015-7 Hartley Rd.            Tom Naylor            (904)        (904)
Inc.-North                                       Jacksonville, FL  32257                           886-4292     886-0144
-------------------------------------------------------------------------------------------------------------------------
Precision Environment,          PW/S      7UM    Commercial Place 1-Ste. 160   Tony Rizzo            (954)        (954)
Inc.-South                                       3230 W. Commercial Blvd.      Chad                497-3115     497-3119
                                                 Oakland Park, FL 33309        Tyree
                                                                               Joyce Kaeser
-------------------------------------------------------------------------------------------------------------------------
Process Sales                    IPM      M52    743 Annoreno                  Bill Esposito         (630)        (630)
                                                 Drive                                             543-7400     543-7411
                                                 Addison, IL  60101
-------------------------------------------------------------------------------------------------------------------------
Pure Power                    IPM/PW/S    3PP    PO Box 255                    Garry Luerssen        (631)        (631)
                                                 407 E. Main St., Suite                            474-7886     474-7957
                                                 2           Port Jefferson,
                                                 NY  11777
-------------------------------------------------------------------------------------------------------------------------
Quality Power Systems, Inc.      IPM      M38    45000F Underwood Ln.          Dan Toland            (703)        (703)
                                                 Sterling, VA  20166                               709-2224     709-0524
-------------------------------------------------------------------------------------------------------------------------
Ramtek, LLC                     PW/S      4RT    18011 Sky Park Circle         Kurt Richard          (949)        (949)
                                                 SuiteA                        Dean Miles          798-1480     798-1485
                                                 Irvine, CA 92614
-------------------------------------------------------------------------------------------------------------------------
RC Merchant and Co., Inc.       PW/S      6RC    23735 Research Dr.            John Merchant         (248)        (248)
                                                 Farmington Hills, MI  48335                       476-4600     476-3162
-------------------------------------------------------------------------------------------------------------------------
Sobek Enterprises, Inc.         PW/S      6SE    1432 Sadlier Circle East      Bob Sobek          (317)351-8145   (317)
                                                 Drive                                                          351-8149
                                                 Indianapolis, IN  46239
-------------------------------------------------------------------------------------------------------------------------
Sun Sales Co.                   PW/S      94F    3949 Corrales Rd., Suite      Paul Hardy            (505)        (505)
                                                 200          Corrales, NM                         922-0000     899-7674
                                                 87048
-------------------------------------------------------------------------------------------------------------------------
SupporTek                       PW/S      4AB    425 Santa Fe Drive            Tom Ebner             (303)    (303)892-6100
                                                 Denver, CO 80204                                  892-6500
-------------------------------------------------------------------------------------------------------------------------
SWM Co.                         PW/S      9SW    11926 Radium St.              Steve McKim           (210)        (210)
                                                 San Antonio, TX  78216                            308-7390     308-7391
-------------------------------------------------------------------------------------------------------------------------
T.S. Williams & Associates       IPM      M50    102 Amos Drive                Sky Williams          (678)        (678)
                                                 Cumming, GA 30040                                 947-1400     947-1444
-------------------------------------------------------------------------------------------------------------------------
Tubbesing Sales Corporation     PW/S      6TD    1771 International Pkwy.,     Jim Tubbesing         (972)        (972)
                                                 Suite 115                                         234-3855     234-8865
                                                 Richardson, TX  75081
-------------------------------------------------------------------------------------------------------------------------
Tubbesing Sales Corporation     PW/S      6TH    15621 Blue Ash, Suite 100     Mike                  (281)        (281)
                                                 Houston, TX  77090            Watts               876-0341     876-2912
-------------------------------------------------------------------------------------------------------------------------
Weisler & Associates, Inc.       IPM      M60    10235 West Little             Thomas Barnett        (713)        (713)
                                                 York                                              849-3799     849-3755
                                                 Houston, TX  77040
-------------------------------------------------------------------------------------------------------------------------
WW Enterprises                  PW/S      9WW    Wagon Wheel Trade Center      Jack Dobbins          (918)        (918)
                                                 10912 E. 2nd                                      438-6100     438-5434
                                                 Tulsa, OK  74128
-------------------------------------------------------------------------------------------------------------------------

</TABLE>

                                       21
<PAGE>

Contract No. AP-01-01                                                  EXHIBIT F

                              Active Power Training

ACTIVE POWER shall offer POWERWARE designated representative(s) training on
installation, operation, maintenance and repair of the Active Power Products.

Factory Training

ACTIVE POWER offers to provide 1 free training class per year for POWERWARE's
training staff and technical support personnel, such training class shall be for
up to seven people.

Active Power also agrees to provide, upon request by POWERWARE, training classes
at ACTIVE POWER's published training rates. These rates are currently set at
$4,000 per class of up to seven people. POWERWARE shall be responsible for its
own travel and living arrangements during these sessions.

As required, ACTIVE POWER agrees to work with POWERWARE to arrange and support
specific training requirements.
<PAGE>

Contract No. AP-01-01                                                  EXHIBIT G

                       Warranty and Post-Warranty Service

Buyer's service personnel must successfully complete Supplier's certified
training course (administered by either Supplier or a certified CleanSource
Buyer trainer) in order to provide warranty support for the Product.

Supplier will reimburse Buyer at the following rates for warranty repair
performed on Supplier's Product. These rates assume Supplier's normal warranty
support, which is 8am CDT to 5pm CDT Monday through Friday, excluding holidays.

Travel Time and On-Site Labor- $90/hr Monday through Friday 8:00 am to 5:00 pm
local time excluding holidays; $110/hr all other times.

Supplier will also reimburse Buyer for documented, customary and reasonable
expense incurred by Buyer on behalf of Supplier. Any disputed charges will be
resolved by the VP of Sales or Director of Field Services for Active Power and
the VP, Global Services or Director of Field Services for POWERWARE (this
Agreement assumes that typical travel labor would average less than 4 hours and
not include an overnight stay).

Warranty Parts -Supplier will provide warranty replacement Spare Parts at no
charge to Buyer during the warranty period. These Spare Parts will replace the
spare parts inventory purchased by Buyer per the attached Spare Parts list.
Buyer will purchase the initial stock of spare parts inventory at Supplier's
published list price less 35%. These Spare Parts should cover 95% of expected
repairs to all CleanSource models. Subsequent spare parts purchases will be
available to Buyer at Supplier's published list price less the discount granted
buyer on their hardware purchases. Upon receiving a Spare Part covered under
warranty and accompanied by the supporting documentation, (See attachment 1),
Supplier will provide a repaired, remanufactured or a Supplier approved Spare
Part to replace the Buyer's inventoried Spare Part. Buyer will be responsible
for the shipping of the affected Spare Part to the approved Supplier Parts
Center. Supplier will be responsible for the freight cost of the replacement
Spare Part to the Buyer logistic support center designated by Buyer. In warranty
cases requiring express shipping, Supplier will be responsible for the express
freight charges.

Warranty Service Escalation Plan- For any system down more than 48 hours and
being covered by the Supplier's Service Escalation Plan, Supplier technical
support coverage will be expanded to 24 hours per day 7 days per week for the
specific event. (See Attachment 2)

Supporting Warranty Documentation - summary of Field Activity Reports (attached
hereto as Exhibit G - Attachment 5) will be provided by Buyer's affiliate,
Buyer's global services unit to Supplier for its actual cost for providing
Supplier warranty services to Buyer Customers. Buyer's global services unit will
invoice Supplier for such costs. This must include documentation of specific
failures and summary information on the causes of such failures.

At any time during the warranty period with respect to each Product, Supplier
reserves the right to meet and confer, upon ten (10) days prior written notice
regarding the Buyer provided warranty service on each such Product if: in any
three (3) month period an uncorrected (i) repetitive problem occurs, (ii)
<PAGE>

Buyer repair has been repeatedly done incorrectly and/or (iii) the expenses
incurred by Buyer to resolve or correct problems has been materially higher than
the average expense for the applicable problem. If, after meeting and
conferring, the parties are unable to reach a mutually acceptable resolution of
the foregoing issues, then, upon ten (10) days prior written notice, Supplier
may assume future warranty obligations.
<PAGE>

Contract No. AP-01-01                                   EXHIBIT G - Attachment 1

                         Spare Parts Seller's List Price
                                Effective 8/24/01

Buyer's Logistics & Support Center Inventory
CleanSource2 CS250KW or CS500KW with DC Disconnect Option

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------------------
  Item      P/N    DESCRIPTION                     QTY         UM      Unit Price Extended List Price
            ---    -----------                     ---         --      ---------- -------------------
-------------------------------------------------------------------------------------------------------
<S>      <C>       <C>                             <C>       <C>      <C>            <C>
  *1     30538-1   PWA, APC Controller             1         Each     $2,970.00       $2,970.00
-------------------------------------------------------------------------------------------------------
  *2     85793-1   Field Coil Driver               1         Each     $1,549.68       $1,549.68
-------------------------------------------------------------------------------------------------------
   3     85595-02  Vacuum Pump                     1         Each     $1,857.02       $1,857.02
-------------------------------------------------------------------------------------------------------
   4       85503   Vacuum Pump Oil                 1         Each       $37.44          $37.44
-------------------------------------------------------------------------------------------------------
   5      86088-1  Left SkiiP                      3         Each     $1,975.60       $5,926.80
-------------------------------------------------------------------------------------------------------
   6       85648   Fan Module                      1         Each      $342.34         $342.34
-------------------------------------------------------------------------------------------------------
   7      86064-2  Armature Fuse                   1         Each      $843.81         $843.81
-------------------------------------------------------------------------------------------------------
   8       85799   Upper Bearing Cartridge         1         Each     $1,122.00       $1,122.00
-------------------------------------------------------------------------------------------------------
   9      85885-1  Lower Bearing Cartridge         1         Each     $2,395.80       $2,395.80
-------------------------------------------------------------------------------------------------------
  *10      30114   PWA, SIO                        1         Each      $858.00         $858.00
-------------------------------------------------------------------------------------------------------
  *11     30038-1  PWA. CTI                        1         Each      $462.00         $462.00
-------------------------------------------------------------------------------------------------------
  *12      30158   PWA, Fan Monitor                1         Each      $233.44         $233.44
-------------------------------------------------------------------------------------------------------
  *13      30160   PWA, PWD                        1         Each      $347.71         $347.71
-------------------------------------------------------------------------------------------------------
  *14     30166-1  PWA, FWI                        1         Each      $509.30         $509.30
-------------------------------------------------------------------------------------------------------
  *15      30188   PWA, SKI                        1         Each      $105.31         $105.31
-------------------------------------------------------------------------------------------------------
  *16      85593   Assy, Com Accel                 1         Each      $586.26         $586.26
-------------------------------------------------------------------------------------------------------
  *17     85792-2  Assy, Users Interface           1         Each     $1,286.43       $1,286.43
-------------------------------------------------------------------------------------------------------
  **18    86087-1  Assy, SKiiP, Right              1         Each     $1,975.60       $1,975.60
-------------------------------------------------------------------------------------------------------
   19      11200   Hose, Vacuum                   11          FT        $2.57           $28.27
-------------------------------------------------------------------------------------------------------
   20    25808-15  Fuse, 15 AMP                    5         Each       $5.50           $27.50
-------------------------------------------------------------------------------------------------------
   21     25808-8  Fuse, 8 AMP                     5         Each       $5.50           $27.50
-------------------------------------------------------------------------------------------------------
   22    25837-03  Fuse, 3 AMP                     5         Each       $8.32           $41.60
-------------------------------------------------------------------------------------------------------
   23    25834-30  Fuse, 30 AMP                    5         Each       $10.38          $51.90
-------------------------------------------------------------------------------------------------------
   24    25834-10  Fuse, 10 Amp                    5         Each       $9.72           $48.60
-------------------------------------------------------------------------------------------------------
   25    25809-10  Fuse, 10 Amp                    5         Each       $5.60           $28.00
-------------------------------------------------------------------------------------------------------
   26    25809-12  Fuse, 12 Amp                    5         Each       $5.60           $28.00
-------------------------------------------------------------------------------------------------------
   27    25809-01  Fuse, 1 Amp                     5         Each       $5.60           $28.00
-------------------------------------------------------------------------------------------------------
   28    25809-20  Fuse, 20 Amp                    5         Each       $5.60           $28.00
-------------------------------------------------------------------------------------------------------
                                                                        Total        $23,746.31
-------------------------------------------------------------------------------------------------------
</TABLE>

Pricing is subject to change. Always consult with the factory for the most
current pricing. If purchased as a kit, take a 10% discount from the "Total
Price."
 *This part may be subject to an up-revision charge from time to time.
**Required only on CS500KW system.
<PAGE>

Contract No. AP-01-01                                   EXHIBIT G - Attachment 2

                        Typical Service Escalation Chart
                        --------------------------------

     o   The escalation chart below is to be used as the maximum allowable time
         from identification of warranty issue before the next responsible party
         is notified and has an obligation to provide service response. These
         times are not to be considered the minimum time allowed prior to
         notifying a responsible party. Buyer may contact Supplier anytime for
         technical assistance after showing a responsible effort on Buyer's
         party to resolve the related issue.

                                    Chart: 1
                           Typical Service Escalation

                               Responsible Parties

<TABLE>
<CAPTION>

----------------------------------------------------------------------------------
<S>         <C>       <C>       <C>         <C>      <C>        <C>        <C>
Elapsed      Buyer     Buyer    Technical   Active    Active    Active     *Active
Time         Field     Parts     Support    Power     Power     Power       Power
            Service     &                   Help      Parts     Service     On-site
                      Logistics             Desk       &        Austin,     Service
                                                     Logistics    TX
----------------------------------------------------------------------------------
T + 24Hrs.      X
----------------------------------------------------------------------------------
T + 48Hrs.      X        X        X         X
----------------------------------------------------------------------------------
T + 72 Hrs.     X        X        X         X          X          X
----------------------------------------------------------------------------------
T + 96 Hrs.     X        X        X         X          X          X           X
----------------------------------------------------------------------------------
</TABLE>
<PAGE>

Contract No. AP-01-01                                   EXHIBIT G - Attachment 3

 Supplier's Warranty And Post Warranty Return Material Authorization Procedures
 ------------------------------------------------------------------------------

Before returning a Product for repair or replacement, Buyer must first contact
Supplier and obtain a Return Material Authorization (RMA) number. The following
information must be supplied in order to obtain an RMA number:

         1.       Name of the Buyer's Customer
         2.       Serial number of the original Product
         3.       Shipment or delivery date
         4.       Description of the problem
         5.       Offsetting Order for replacement Product (if the Product is
                  approved for replacement)

Upon receipt of the RMA number, which will be supplied by Supplier before the
end of the next business day, Buyer or Buyer's Customer will return the Product
to Supplier or an authorized service center at Buyer's or Buyer's Customer's
expense. The RMA and Product serial number must be referenced on all
correspondence regarding the returned Product, as well as on the shipping
container or package and all shipping documents. Products returned without RMA
numbers or actual RMA authorization will not be accepted. All returned Products
must be properly and commercially reasonably packed. Supplier is not responsible
for damage to Products incurred in shipment or due to inadequate or improper
packaging. Supplier will promptly repair or replace any defective Product and
return the replacement or repaired Product to Buyer or Buyer's Customer (with
notice to Buyer) at Supplier's expense.
<PAGE>

Contract No. AP-01-01                                   EXHIBIT G - Attachment 4

                           Return Goods Documentation*
                           ---------------------------

                                      ------------------------------------------
Active Power RMA# :
                                      ------------------------------------------
Date:
                                      ------------------------------------------
CleanSource Model Number:
                                      ------------------------------------------
CleanSource Serial Number:
                                      ------------------------------------------
Part Number:
                                      ------------------------------------------
OLD Part Serial Number:
                                      ------------------------------------------
New Part Serial Number:
                                      ------------------------------------------
Technician:
                                      ------------------------------------------
Location:
                                      ------------------------------------------

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

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

                                      ------------------------------------------
Problem Description:
                                      ------------------------------------------

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

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

                                      ------------------------------------------
Frequency of Problem:                   Hard Failure                      Hot
                                      ------------------------------------------
                                            Charging                     Cold
                                      ------------------------------------------
                                         Discharging                   Other:
                                      ------------------------------------------

                                      ------------------------------------------
Explain Other:
                                      ------------------------------------------

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

Signature:
                                      ------------------------------------------

*The attached procedure applies to all returned goods
<PAGE>

Contract No. AP-01-01                                  EXHIBIT G  - Attachment 5

                         POWERWARE Field Activity Report

Request ID:
Place ID:
Place Name:
Place Address:

Phone:
Contact:                                        Technician:
P.O.:                                           Arrival Date/Time:
                                                Completion Date/Time:
Problem Description:

Service Notes:
      Code:                                     Text:

Products Serviced:
      Model ID:                                 Revision:
      Serial ID:                                Contract ID / Version:

Services:
      Model ID:                                 Service Description     Quantity

Non-Product Part and Non-Part Usage

Part Need Details
<PAGE>

Contract No. AP-01-01                                   EXHIBIT G - Attachment 6

                              Post-Warranty Support
                              ---------------------

Buyer's service personnel must successfully complete Supplier's certified
training course (administered by either Supplier or a certified CleanSource
Buyer trainer) in order to provide warranty support for the Product.

Buyer will inventory and maintain appropriate Spare Parts to provide its
standard level of service. The attached Spare Parts list reflects 95% coverage
of all expected repairs.

CS2 - 250 & CS2 - 500 Spares Parts List

Upon Buyer obtaining a RMA number from Supplier for a returning part, Supplier
will ship the replacement part to Buyer's Logistics facility designated by
Buyer. In the event express shipping is required, Buyer will be responsible for
the freight charges.

Field Service Support - Supplier will make available after market Field Service
Support to Buyer

Technical Communications - Supplier Field Service will provide Buyer any
notifications of technical changes and enhancements for the CleanSource product
line through a Field Engineering Advisory (FEA). This will include changes to
the fit, form and function of the CleanSource product line. Buyer will assign a
delegate to receive and distribute the information to its staff.

Service Escalation Plan - Buyer will, upon receiving a service call, follow the
typical escalation plan as shown in Chart C-1, Typical Escalation Chart. In
response Supplier will offer assistance via telephone support and, if required,
on-site service at the expense of Buyer in cases of non-warranty coverage.<PAGE>

                                                                   EXHIBIT 10.21

                            MASTER SOURCING AGREEMENT

         This MASTER SOURCING AGREEMENT (the "MSA") is entered into as of the
13th day of July, 2001, by and between General Electric Company, a New York
corporation acting through its GE Digital Energy business unit, having a
principal place of business at 4200 Wildwood Parkway, Atlanta, Georgia 30339 USA
("GE" or "Buyer") and ACTIVE POWER, INC ("Active Power" or "Seller"), a Delaware
corporation, having a principal place of business at 11525 Stonehollow Drive,
Suite 110, Austin, Texas 78758. (GE and ACTIVE POWER being referred to herein
individually as a "Party" and collectively the "Parties").

                                    RECITALS

         WHEREAS, GE and ACTIVE POWER and their respective affiliates are
engaged in the manufacture, production, assembly and sale of Power Conditioning
equipment and components and ancillary services (collectively "Equipment"); and

         WHEREAS, GE and ACTIVE POWER desire to expand their business
relationship and grow on terms satisfactory to both parties and they hereby
execute this MSA for purposes of confirming the issuance by GE to ACTIVE POWER
of the purchase orders (the "Purchase Orders") for the products defined in
Attachment A in accordance with the pricing schedule defined in Attachment B.

         NOW, THEREFORE, in consideration of the premises and mutual covenants
set forth herein the Parties agree as follows:

         1.       Supply/Purchase of ACTIVE POWER Flywheel Energy Storage System
                  ("FESS") Designed Systems. The Parties hereby enter into this
                  FESS sourcing agreement, whereby ACTIVE POWER shall supply GE,
                  and GE shall purchase from ACTIVE POWER, Clean Source 2
                  Flywheel Energy Storage System on the following conditions:

                  (a)      That the ACTIVE POWER designed FESS systems shall be
                  manufactured and produced in accordance with and shall comply
                  with the GE design and specification requirements referenced
                  in Attachment A [****];

                  (b)      Subject to the Agreement, ACTIVE POWER hereby
                  appoints and grants to GE and its affiliates, as defined
                  below, and GE hereby accepts form ACTIVE POWER, a
                  non-transferable, royalty-free, right and license to: (i)
                  non-exclusivity purchase, market, distribution and resell the
                  ACTIVE POWER flywheel products used with uninterruptible power
                  systems ("UPS") described in Attached B (hereinafter referred
                  to as the "standard CleanSource products from ACTIVE POWER")
                  to end-users located world-wide (hereinafter referred to as
                  the "End Users"); (ii) incorporate private and/or co-labeling
                  of the ACTIVE POWER products using GE logos (where approved
                  exclusively by GE). During the term of this Agreement, GE and
                  it affiliates may hold themselves out to the public as an
                  authorized reseller of ACTIVE POWER products.

                  (c)      ACTIVE POWER further acknowledges that GE's
                  willingness to pursue placement of volume of Equipment orders
                  with ACTIVE POWER is subject to ACTIVE POWER demonstrating to
                  the satisfaction of GE, among other reasonable requirements
                  that GE may establish for purchase of the Equipment: (1)
                  completion of first piece qualification of the Equipment, (2)
                  that ACTIVE POWER has the necessary capacity, equipment and
                  resources to timely and properly supply the Equipment, (3)
                  that ACTIVE POWER can meet the price, Six Sigma quality and
                  delivery targets and requirements for the Equipment
                  established by GE, and (4) that the Equipment will conform to
                  any GE-supplied or approved drawings and specifications issued
                  for the Equipment. The Parties acknowledge that the quantities
                  of the

                                       1
 **Confidential treatment has been requested for the portions of this agreement
marked by asterisks. Omitted material for which confidential treatment has been
requested has been filed separately with the Securities and Exchange
Commission.**

<PAGE>

                  Equipment identified on Attachment B are GE's current estimate
                  of its needs for Equipment during the time period specified
                  and are subject to adjustment to the discretion of GE based on
                  its actual volume, customer and business requirements. GE
                  shall provide to ACTIVE POWER at the beginning of each
                  calendar quarter (by the 15th of the first month), a forecast
                  of orders for that calendar quarter along with a preliminary
                  forecast for the following quarter (i.e. on April 1, forecast
                  for Q2 as well as a preliminary forecast for Q3). Forecasts
                  provided by GE shall not create any commitment by or
                  obligation upon GE to place any order. Within 10 business days
                  of GE submitting such forecast, ACTIVE POWER shall confirm its
                  capacity to meet forecast demand for the following two
                  quarters. Upon such confirmation, ACTIVE POWER guarantees to
                  sell such volume to GE in any quarter upon its request, within
                  the established lead times defined in Attachment B. The scope,
                  price, cycle, schedule and other requirements are set forth on
                  Attachment B hereto;

                  (d)      ACTIVE POWER pricing shall be [****] and mutually
                  agreed upon by GE, as set forth in Attachment B.

                  (e)      The commercial provisions of this MSA include the
                  terms of Attachment C "GEDE Master Terms and Conditions -
                  GEDE-STD-0001 Rev. A";

                  (f)      The Parties may agree to additional provisions
                  appropriate for a multi-year sourcing agreement between the
                  Parties, including provisions providing for ACTIVE POWER
                  on-line access to GE drawings and the extranet, and
                  confidentiality, compliance with laws and termination for
                  cause provisions consistent with those set forth in Attachment
                  C.

                  (g)      ACTIVE POWER agrees to provide application, technical
                  and engineering support for GE bid proposal activity and
                  related system design reviews on site, as requested. ACTIVE
                  POWER shall provide GE with phone support for technical,
                  service and field installation related questions. ACTIVE POWER
                  shall provide supervision of start-up and commissioning of
                  field installations as set forth in Attachment D and
                  instructed by the GE Purchase Order.

                  (h)      ACTIVE POWER shall provide documentation to GE for
                  purposes of providing maintenance on ACTIVE POWER products.
                  ACTIVE POWER shall provide this documentation in both written
                  and electronic form as well grant GE a royalty-free license to
                  reproduce materials for said maintenance purposes.

                  (i)      ACTIVE POWER shall offer to GE designated
                  representative(s) factory training at a mutually agreed to
                  price schedule and intervals as referred to in Attachment D.

         2.       Effective Date and Agreement Expiration. This MSA shall
                  commence on the date first written above and, except as
                  otherwise provided herein, shall continue for an initial term
                  through October 30, 2002. This Agreement will be extended in
                  additional one (1) year terms, given the performance by both
                  parties as outlined in the Agreement, except that either party
                  may terminate this Agreement by giving the other written
                  notice of termination not less than sixty (60) days prior to
                  the expiration of the initial term or any renewal term.

         3.       Confidentiality. No announcement or statement concerning this
                  MSA or the subject matter of, or any matter referred to in,
                  this MSA shall be made or issued by or on behalf of either
                  Party without the prior written approval of the other,
                  provided that nothing shall restrict the making by one party
                  (even in the absence of agreement by the other) of any
                  statement which may be required by law or called for by the
                  requirements of any recognized stock exchange on which its
                  shares or other securities are traded (but then only to the
                  extent so required).

         4.       Confidential Information. Each party agrees to protect
                  information in accordance with Attachment E, Confidentiality
                  Agreement Dated July 10, 2001.

                                       2
**Confidential treatment has been requested for the portions of this agreement
marked by asterisks. Omitted material for which confidential treatment has been
requested has been filed separately with the Securities and Exchange
Commission.**

<PAGE>

         5.       Counterparts. This MSA may be signed in any number of
                  counterparts, each of which shall be an original, with the
                  same effect as if the signatures were upon the same
                  instrument.

         6.       Governing Law. This MSA shall be governed and construed in
                  accordance with the laws of the State of New York, USA
                  (without regard to the conflicts of law rules of such
                  jurisdiction).

         7.       Assignment. Neither Party shall assign its rights and
                  obligations hereunder to any third party without the prior
                  written consent of the Party; provided, that either Party may
                  assign any of its rights and obligations hereunder to any
                  controlled affiliate of such Party, but such Party shall
                  remain primarily liable hereunder.

         8.       Notices. All notices and Orders permitted or required to be
                  given under this Agreement shall be in writing and shall be
                  deemed duly given upon personal delivery, transmitted by
                  facsimile machine or electronically via the internet and duly
                  acknowledge to the address or facsimile numbers or e-mail
                  addresses set-forth below. All notices below or to any other
                  facsimile number or e-mail address as the party may designate
                  by ten (10) days prior written notice given in accordance with
                  this provision.

                  If to ACTIVE POWER:                If to GE:
                  -------------------                ---------
                  Active Power                       GE Digital Energy
                  11525 Stonehollow Drive            4200 Wildwood Parkway 32-12
                  Suite 110                          Atlanta, GA 30339
                  Austin, Texas 78758                Attention: Sourcing Manager
                  Attention:  Vice President Sales   Randolph M. Rowe
                              Bill Ott

                  FAX:  512-836-4511                 FAX:  678-844-5925

                  Email: bott@activepower.com        Email: randy.rowe@ps.ge.com

         9.       Entire Agreement. This MSA contains the entire agreement of
                  the Parties with respect to the subject matter hereof. All
                  prior correspondence, negotiations and agreements, oral or
                  written, among the Parties with respect to the subject matter
                  hereof are superseded by this MSA. Notwithstanding the terms
                  of this MSA, or any issued purchase orders between the Parties
                  and their affiliates shall remain in full force and effect in
                  accordance with their terms until such time as they are
                  modified or amended by separate written agreement by the
                  Parties or their respective affiliates. No variation,
                  supplement, deletion or replacement of this MSA or any of its
                  terms shall be effective unless made in writing and signed by
                  each of the Parties hereto.

         IN WITNESS WHEREOF, the Parties have caused this MSA to be executed by
this respective authorized representatives as of the date first set forth above.

GENERAL ELECTRIC COMPANY                        ACTIVE POWER, INC.

By:  /s/                                        By: /s/
    ----------------------------------------       -----------------------------

Name:       Randolph M. Rowe                    Name:    Bill Ott
       -------------------------------------          --------------------------

Title:         Sourcing Leader                  Title:  Vice President,
                                                        Sales & Service
        ------------------------------------          --------------------------

<PAGE>

                                  ATTACHMENT A

Flywheel Energy Storage System ("FESS"):

         [****]

                                       4
**Confidential treatment has been requested for the portions of this agreement
marked by asterisks. Omitted material for which confidential treatment has been
requested has been filed separately with the Securities and Exchange
Commission.**

<PAGE>

                                  ATTACHMENT B

ACTIVE POWER commits to offer [****] on each opportunity GE requests ACTIVE
POWER with a not to exceed price levels noted below:

Product:          ACTIVE POWER CleanSource 2 Flywheel Energy Storage System
                  ---------------------------------------------------------

                  250kW Flywheel Energy Storage Systems
                  Key Product Features:

                  o         Single flywheel configuration.
                  o         DC power ranges of 40kW for 120 seconds up to 250kW
                            for 12.5 seconds of ride-through.
                  o         Remote Monitoring Interface and Software

                  500kW Flywheel Energy Storage Systems
                  Key Product Features:

                  o        Dual flywheel configuration.
                  o        DC power ranges of 40KW for 120 seconds up to 500KW
                           for 12.5 seconds of ride-through.
                  o        Remote Monitoring Interface and Software

                  Produced in Compliance with:

                  o        UL 1778 (CUL), Standards for Uninterruptible Power
                           Supply Equipment CE Mark
                  o        FCC Rules and Regulation of Part 15, Subpart J, Class
                           A
                  o        National Electrical Manufacturer's Association (NEMA)
                  o        National Fire Protection Association (NFPA-70)
                  o        National Electrical Code (NEC)
                  o        Occupational Safety & Health Administration (OSHA)

Demand Forecast:

                  On a quarterly basis, GE shall provide ACTIVE POWER with an
                  updated forecast of GE's semi-annual product requirements. For
                  released purchase orders, GE shall provide ACTIVE POWER a firm
                  90-day delivery requirement schedule.

                  [****]

                                       5
**Confidential treatment has been requested for the portions of this agreement
marked by asterisks. Omitted material for which confidential treatment has been
requested has been filed separately with the Securities and Exchange
Commission.**

<PAGE>

                            ATTACHMENT B (continued)

Pricing Schedule:

                  [****]

--------------------------------------------------------------------------------
            General Electric Digital Energy
--------------------------------------------------------------------------------
             Active Power CleanSource 2 Flywheel Quotation
--------------------------------------------------------------------------------
                         10-Jul-01
--------------------------------------------------------------------------------
                           Item                               List Price
--------------------------------------------------------------------------------
CS2/250 Flywheel System                                         [****]
--------------------------------------------------------------------------------
CS2/500 Flywheel System
--------------------------------------------------------------------------------
CS2/250 DC Disconnect
--------------------------------------------------------------------------------
CS2/500 DC Disconnect
--------------------------------------------------------------------------------
CSView Software
--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
Total
--------------------------------------------------------------------------------

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

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

Options (Purchased with initial order)
--------------------------------------------------------------------------------
CS2/250 Year 2 Parts Only Extended Warranty
--------------------------------------------------------------------------------
CS2/250 Year 3 Parts Only Extended Warranty
--------------------------------------------------------------------------------
CS2/500 Year 2 Parts Only Extended Warranty
--------------------------------------------------------------------------------
CS2/500 Year 3 Parts Only Extended Warranty
--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
Extended Total
--------------------------------------------------------------------------------

The pricing set forth in the table above is based on GE making the following
Volume Commitment and is fixed for the initial term of this Agreement.

                                VOLUME COMMITMENT
                                -----------------

                                     [****]

In the event this volume is not achieved by the end of the contract period,
ACTIVE POWER shall invoice GE for the difference between the commitment and
actual purchases (includes recovery of unearned discounts, future price
adjustments, etc.). ACTIVE POWER'S discount schedule is set forth below the
following example.

                  [****]

                                       6
**Confidential treatment has been requested for the portions of this agreement
marked by asterisks. Omitted material for which confidential treatment has been
requested has been filed separately with the Securities and Exchange
Commission.**

<PAGE>

                            ATTACHMENT B (continued)

--------------------------------------------------------------------
                      Active          Power
--------------------------------------------------------------------
                             [****]
--------------------------------------------------------------------
--------------------------------------------------------------------
    Annual           CS2-250         CS2-500
    ------           -------         -------
--------------------------------------------------------------------
   Volume $K        Unit Price      Unit Price
   ---------        ----------      ----------
--------------------------------------------------------------------
                      [****]          [****]
--------------------------------------------------------------------
 (less than)500
--------------------------------------------------------------------
 501-1000
--------------------------------------------------------------------
 1001-2000
--------------------------------------------------------------------
 2001-4000
--------------------------------------------------------------------
 4001-6000
--------------------------------------------------------------------
 6001-10000
--------------------------------------------------------------------
  10001(and greater)
--------------------------------------------------------------------

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

Productivity
                  Continuous Improvement & Six Sigma
                  ----------------------------------

                  ACTIVE POWER shall commit to a mutually agreed to Continuous
                  Improvement program addressing product performance, cost
                  improvement and cycle time reduction. GE shall work with
                  ACTIVE POWER on Six Sigma projects to support this effort.
                  Improvements shall be negotiated and mutually shared.

Invoice and Payment Terms

                  ACTIVE POWER Invoices, in US Dollars, shall be presented at
                  the time of shipment release, after release from FOB - Austin,
                  Texas. [****]

Lead Times, Cycle and Delivery Schedule

                  FESS units order shall be delivered in accordance with
                  instructions in the released purchase order.

                  [****]

                                       7
**Confidential treatment has been requested for the portions of this agreement
marked by asterisks. Omitted material for which confidential treatment has been
requested has been filed separately with the Securities and Exchange
Commission.**

<PAGE>

                            ATTACHMENT B (continued)

[****]

                                       8
**Confidential treatment has been requested for the portions of this agreement
marked by asterisks. Omitted material for which confidential treatment has been
requested has been filed separately with the Securities and Exchange
Commission.**

<PAGE>

                                  ATTACHMENT C

          "GEDE Master Terms and Conditions - GEDE-STD-0001 Rev. B-AP"

                         (Referenced document attached)

<PAGE>

                                  ATTACHMENT D

                           ACTIVE POWER FESS training

         ACTIVE POWER shall offer GE designated representative(s) training on
         installation, operation, maintenance and repair of their FESS systems.

         Factory Training

         ACTIVE POWER offers to provide 1 free training class for GE's training
         staff and technical support personnel, such training class shall be for
         up to seven people. Active Power will provide GE two free sets of the
         tools identified in the table below for the training staff class. GE
         may purchase additional sets of tools at a 25% discount from the
         identified list price.
<TABLE>
<CAPTION>

         --------------------------------------------------------------------------------------------------------------
         Part        Description                                                 Active Power List Price    QTY
         Number
         --------------------------------------------------------------------------------------------------------------
         <S>                                                                     <C>                        <C>
         55520       TOOL, BEARING INSERTION, FLYWHEEL ASSY.                     $              155.00      1
         --------------------------------------------------------------------------------------------------------------
         55530       TOOL, BEARING REMOVAL                                       $              210.00      1
         --------------------------------------------------------------------------------------------------------------
         55521       TOOL, GUIDE PIN, BRG CARTRIDGE                              $               40.00      2
         --------------------------------------------------------------------------------------------------------------
         55550       TOOL, ROTOR SHIM, APS ROTOR                                 $               40.00      4
         --------------------------------------------------------------------------------------------------------------
         90008       KIT, SPARE, SHIM                                            $               80.00      1
         --------------------------------------------------------------------------------------------------------------
         67002       Software, CS View                                           $              950.00      1
         --------------------------------------------------------------------------------------------------------------

</TABLE>

         Active Power also agrees to provide Training classes at a 25%
         discounted rate from ACTIVE POWER published training rates. These rates
         are currently set at $4,000 per class of up to seven people. GE shall
         be responsible for its own travel and living arrangements during these
         sessions.

         As required, ACTIVE POWER agrees to work with GE to arrange and support
         specific training requirements.

         Field Training

         Commencing after shipment of the first unit, for six months, or until
         the members of the training staff (attendees of free training class)
         are certified, whichever is earlier, ACTIVE POWER shall provide free
         on-site assistance for 1 working day during the start up, commissioning
         and acceptance of a FESS system. If additional on-site assistance is
         required after the system acceptance, GE shall pay Active Power's
         standard billing rates, less a 25% discount. All travel and lodging
         expenses shall be paid in full at their actual cost.

         Warranty Service Obligations

         GE service personnel shall provide all warranty service for the FESS
         systems sold by GE. ACTIVE POWER shall reimburse GE for agreed upon
         expenses for labor, and ACTIVE POWER's warranty shall govern costs
         related to parts. Within 60 days from the date of this Agreement, the
         Parties shall agree on the following:

         1.       Spare Part Pricing Schedule
         2.       Spare Part Inventory List
         3.       Warranty Labor Billing Rates from GEDE back to Active Power

<PAGE>

                                  ATTACHMENT E

                         Mutual Non-Disclosure Agreement

                         (Referenced document attached)

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