<PAGE>

                                                                   EXHIBIT 10.36

                         REGISTRATION RIGHTS AGREEMENT

                                by and between

                         SATCON TECHNOLOGY CORPORATION

                                      and

                         NORTHRUP GRUMMAN CORPORATION

                                  Dated as of

                               November 16, 1999

<PAGE>

                         REGISTRATION RIGHTS AGREEMENT

          THIS REGISTRATION RIGHTS AGREEMENT (the "Agreement") is made and
effective as of November 16, 1999, by and between Satcon Technology Corporation,
a Delaware corporation (the "Company") and Northrop Grumman Corporation, a
Delaware corporation ("Northrop").

                                   RECITALS

          A.   Upon the terms and subject to the conditions of an Asset Purchase
Agreement dated as of November 16, 1999 (the "APA"), by and among the Company,
and Northrop, the Company will acquire assets of Northrop's Power Electronics
Business Unit and the Company will issue 578,761 shares of the common stock, $_
par value ("Common Stock") of the Company to Northrop and one or more Warrants
to purchase Common Stock of the Company.

          B.   A material inducement for Northrop to consummate the transactions
contemplated by the APA was that the Company enter into this Agreement.

                                   AGREEMENT

          NOW, THEREFORE, in consideration of the premises and the mutual
covenants and agreements of the parties contained herein, the parties agree as
follows:

     1.   Definitions. As used herein, the terms below shall have the following
meanings.  Any such term, unless the context otherwise requires, may be used in
the singular or plural, depending upon the reference.

     "Affiliate" shall have the meaning provided in the Exchange Act and the
      ---------
     rules and regulations of the Commission promulgated thereunder.

     "Agreement" shall mean this Registration Rights Agreement.
      ---------

     "Commission" shall mean the United States Securities and Exchange
      ----------
Commission.

     "Common Stock" shall have the meaning provided in Recital A.
      ------------

     "Company" shall mean Satcon Technology Corporation.
      -------

     "Exchange Act" shall mean the Securities Exchange Act of 1934, as amended,
      ------------
     or any successor law, and the rules and regulations issued pursuant to that
     Act or any successor law.

                                       1

<PAGE>

     "Holder" shall mean any Person to which or whom Northrop transfers all or
      ------
     part of its Registered Shares or Warrant but only pursuant to an exemption
     from registration under the Securities Act, or any permitted assignee
     thereof in accordance with Section 19.

     "APA" shall have the meaning provided in Recital A.
      ---

     "Person" shall mean an individual, partnership, limited liability company,
      ------
     joint venture, corporation, trust or unincorporated organization or any
     other similar entity.

     "Register," "registered" and "registration" shall refer to a registration
      -----------------------------------------
     effected by preparing and filing a registration statement or similar
     document in compliance with the Securities Act, and the declaration or
     ordering of effectiveness of such registration statement or document by the
     Commission.

     "Registrable Shares" shall mean (a) the Shares acquired by Northrop
      ------------------
     pursuant to the APA or upon exercise of the Warrant and (b) any Common
     Stock of the Company issued to Northrop as a dividend or other distribution
     with respect to, or in exchange for or in replacement of, any of the
     Shares; provided, however, that shares of Common Stock shall only be
     treated as Registrable Shares if and so long as (1) they have not been sold
     by Northrop or any Holder thereof to or through a broker or dealer or
     underwriter in a public distribution or otherwise pursuant to an effective
     Registration Statement under the Securities Act, (ii) they have not been
     sold in a transaction exempt from the registration and prospectus delivery
     requirements of the Securities Act under Section 4(1) thereof so that all
     transfer restrictions and restrictive legends with respect thereto are
     removed upon the consummation of such sale, or (iii) are not freely
     tradable pursuant to Rule 144(k) under the Securities Act without any
     volume limitation.

     "Registration" shall mean a registration made pursuant to Section 2.
      ------------

     "Securities Act" shall mean the Securities Act of 1933, as amended, or any
      --------------
     successor law, and the rules and regulations issued pursuant to that Act or
     any successor law.

     "Shares" shall mean the shares of Common Stock issued and sold by the
      ------
     Company to Northrop pursuant to the APA and shares of Common Stock issued
     and sold by the Company to Northrop or a Holder upon exercise of the
     Warrant.

     "Violation" shall have the meaning provided in Section 6(a).
      ---------

     "Warrants" shall mean the warrants represented by two (2) certificates
      --------
     (delivery to Northrop of one of which is subject to fulfillment of a post-
     Closing condition as stated in the APA) each entitling Northrop to purchase
     100,000 Shares of the

                                       2
<PAGE>

     Company for the price per share as stated in the form of Warrant
     Certificate annexed to the APA.

     2.   Registration.
          ------------

          (a)  Commercially Reasonable Efforts. Upon the request of Northrop,
               -------------------------------
     which Northrop shall have the right to do only once with respect to the
     Registrable Shares issued at the Closing under the APA and only once with
     respect to the Registrable Shares acquired upon exercise of one or both of
     the Warrants, the Company shall use its best efforts (without regard to
     expenses) to file as soon as practicable hereafter, a registration
     statement (the "Registrate Statement") under the Securities Act for resale
     of the Registrable Shares which the Company has been notified along with
     the request should be included therein by Northrop and shall use its
     commercially reasonable efforts to cause such registration statement to
     become effective as soon as practicable after each such notice thereafter
     and to stay effective for a period of one year after the effectiveness of
     each such registration. Northrop has simultaneously herewith delivered the
     request for registration of the Registrable Shares issued at Closing of the
     APA. Alternatively, the Company may (i) include such Registrable Shares in
     an existing effective registration statement of the Company by post
     effective amendment with respect to such resale so long as the Northrop and
     the Holders are otherwise provided with all of the rights afforded each of
     them hereunder or (ii) exchange the Registrable Shares on a one for one
     basis for fully registered shares which are freely tradable to the same
     extent as if the shares had been the subject of a registration for resale
     of such shares as otherwise provided herein ("Registered Shares") provided
     such exchange registration is permitted under the Securities Act. If the
     Company elects alternative (ii), the Company agrees to exchange Registrable
     Shares for Registered Shares. Notwithstanding anything in this Section 2,
     the Purchaser may, by written notice to the Seller (i) delay the filing or
     effectiveness of the Registration Statement or (ii) suspend the
     Registration Statement after effectiveness and require that the Seller
     immediately cease sales of shares pursuant thereto in the event that (A)
     the Purchaser files a registration statement (other than a registration
     statement on Form S-8 or its successor form) with the SEC for a public
     offering of its securities or (B) the Purchaser engages in any activity or
     transaction that the Purchaser desires to keep confidential for business
     reasons, if the Purchaser determines in good faith that the public
     disclosure requirements imposed on the Purchaser under the Securities Act
     in connection with the Registration Statement covering the Shares would
     require disclosure of such activity, transaction, preparations or
     negotiations or (C) the Company is in the "registration process" with
     respect to an underwritten public offering; provided that each day of delay
     or suspension shall not count toward the applicable one year period
     referred to above.

                                       3
<PAGE>

          (b)  Expenses of Registration. All expenses (other than underwriting
               ------------------------
     discounts and commissions, stock transfer taxes and the fees and
     disbursements of separate counsel, if any, retained by Northrop or the
     Holders) incurred in connection with each Registration, including (without
     limitation) all registration, filing and qualification fees, printers'
     fees, accounting fees, and fees and disbursements of counsel for the
     Company, shall be borne by the Company.

     3.   Obligations of the Company. Whenever required under this Agreement to
          --------------------------
effect the registration of any Registrable Shares, the Company shall, as
expeditiously as reasonably possible, use reasonable commercial efforts (without
regard to expense) to do the following:

          (a)  Amendments. Prepare and file with the Commission such amendments
               ----------
     and supplements to such registration statement and the prospectus used in
     connection with such registration statement as may be necessary to comply
     with the provisions of the Securities Act with respect to the disposition
     of all securities covered by such registration statement, and furnish such
     copies thereof to Northrop and the Holders.

          (b)  Prospectus. Furnish to Northrop and the Holders such numbers of
               ----------
     copies of a prospectus, including a preliminary prospectus, and any post-
     effective amendments in conformity with the requirements of the Securities
     Act, and such other documents as they may reasonably request in order to
     facilitate the disposition of Registrable Shares owned by them, and cause
     all related filings to be made with the Commission as required by Rule 424.

          (c)  Blue Sky Qualification. Register and qualify the Registrable
               ----------------------
     Shares covered by such registration statement under such other securities
     or Blue Sky laws of such jurisdictions as shall be reasonably requested by
     Northrop and the Holders; provided, however, that the Company shall not be
     required in connection therewith or as a condition thereto to qualify to do
     business or to file a general consent to service of process in any such
     states or jurisdictions.

          (d)  Prospectus Delivery. Promptly notify Northrop and each Holder of
               -------------------
     Registrable Shares covered by the registration statement at any time when
     the Company becomes aware of the happening of any event as a result of
     which the registration statement or the prospectus included in such
     registration statement or any supplement to the prospectus (as then in
     effect) contains any untrue statement of a material fact or omits to state
     a material fact necessary to make the statements therein (in the case of
     the prospectus, in light of the circumstances under which they were made)
     not misleading or, if for any other reason it shall be necessary during
     such time period to amend or supplement the registration statement or the
     prospectus in order to comply with the Securities Act, whereupon, in either
     case, each Holder shall immediately cease to use such registration
     statement or prospectus for any purpose and, as promptly as practicable
     thereafter, the

                                       4
<PAGE>

     Company shall promptly prepare and file with the Commission, and furnish
     without charge to Northrop and the Holders, a supplement or amendment to
     such registration statement or prospectus which will correct such statement
     or omission or effect such compliance and such copies thereof as Northrop
     and the Holders may reasonably request.

          (e)  Suspensions. The Company shall use its reasonable best efforts to
               -----------
     obtain the withdrawal of any order suspending the effectiveness of a
     Registration Statement, or the lifting of any suspension of the
     qualification (or exemption from qualification) of any of the Registrable
     Securities for sale in any jurisdiction.

          (f)  Certificates. The Company shall cooperate with the selling by
               ------------
     Northrop and Holders of Registrable Securities to facilitate the timely
     preparation and delivery of certificates representing Registrable
     Securities to be sold, which certificates shall not bear any restrictive
     legends.

          (g)  Earnings Statements. The Company shall comply with all applicable
               -------------------
     rules and regulations of the SEC and make generally available to its
     security holders earnings statements satisfying the provisions of Section
     11 (a) of the Securities Act and Rule 158 thereunder (or any similar rule
     promulgated under the Securities Act).

     4.   Furnish Information. It shall be a condition precedent to the
          -------------------
obligations of the Company to take any action pursuant to this Agreement with
respect to the Registrable Shares of Northrop that Northrop (i) shall furnish to
the Company such information regarding itself, the Registrable Shares held by it
and the intended method of disposition of such securities as shall be required
to effect the registration of Northrop and such Holder's Registrable Shares and
(ii) shall agree in writing to observe all obligations applicable to a "Holder"
under this Agreement.

     5.   Delay of Registration. Neither Northrop nor any Holder shall have any
          ---------------------
right to obtain or seek an injunction restraining or otherwise delaying any such
registration as the result of any controversy that might arise with respect to
the interpretation or implementation of this Agreement.

     6.   Indemnification. In the event any Registrable Shares are included in
          ---------------
a registration statement under this Agreement:

          (a)  Indemnification by the Company. To the fullest extent permitted
               ------------------------------
     by law, the Company will indemnify and hold harmless Northrop, each Holder,
     any underwriter (as defined in the Securities Act) for Northrop and such
     Holder and each person, if any, who controls Northrop or such Holder or
     underwriter within the meaning of the Securities Act or the Exchange Act,
     against any losses, claims, damages, or liabilities, joint or several) to
     which they may become subject under the Securities Act, the Exchange Act,
     or other federal or state law, insofar as such

                                       5
<PAGE>

     losses, claims, damages, or liabilities (or actions in respect thereof)
     arise out of or are based upon any of the following statements, omissions
     or violations (collectively a "Violation"): (i) any untrue statement or
     alleged untrue statement of a material fact contained in such registration
     statement, including any preliminary prospectus or final prospectus
     contained therein or any amendments or supplements thereto, (ii) the
     omission or alleged omission to state therein a material fact required to
     be stated therein, or necessary to make the statements therein not
     misleading, or (iii) any violation or alleged violation by the Company of
     the Securities Act, the Exchange Act or any state securities law or any
     rule or regulation promulgated under the Securities Act, the Exchange Act
     or any state securities law, and the Company will pay to Northrop and each
     such Holder, director, underwriter or controlling person, as incurred, any
     legal or other expenses reasonably incurred by one law firm retained by
     them, plus appropriate local counsel in connection with investigating or
     defending any such loss, claim, damage, liability, or action; provided,
     however, that the indemnity agreement contained in this Section 6(a) shall
     not apply to amounts paid in settlement of any such loss, claim, damage,
     liability, or action if such settlement is effected without the consent of
     the Company (which consent shall not be unreasonably withheld), nor shall
     the Company be liable in any such case for any such loss, claim, damage,
     liability, or action to which Northrop or any Holder, underwriter or
     controlling person may become subject to the extent that it arises out of
     or is based upon a Violation which occurs in reliance upon and in
     conformity with written information furnished expressly for use in
     connection with such registration by Northrop or such Holder, underwriter
     or controlling person or in connection with the sale by Northrop or others
     during any period when a registration statement has not been declared
     effective, sales are suspended or Northrop or others fail to deliver a
     prospectus or utilize a prospectus that Northrop has been advised is
     inaccurate. This right to indemnification shall remain in full force and
     effect notwithstanding any investigation made by or on behalf of Northrop
     and such Holder or underwriter and shall survive the transfer of such
     securities by Northrop and such Holder.

          (b)  Indemnification by Northrop and Holder. To the fullest extent
               --------------------------------------
     permitted by law, Northrop for itself and each Holder, will indemnify and
     hold harmless the Company, each of its directors, each of its officers who
     has signed the registration statement, each person, if any, who controls
     the Company within the meaning of the Securities Act or the Exchange Act,
     any underwriter, each other Holder and any controlling person of any such
     underwriter or other Holder against any losses, claims, damages, or
     liabilities, joint or several) to which any of the foregoing persons may
     become subject under the Securities Act, the Exchange Act or other federal
     or state law, insofar as such losses, claims, damages, or liabilities (or
     actions in respect thereto) arise out of or are based upon any Violation,
     in each case to the extent (and only to the extent) that such Violation
     occurs in reliance upon and in conformity with written information
     furnished by Northrop or such Holder expressly for use in connection with
     such registration or

                                       6
<PAGE>

     in connection with any sale by Northrop or others during any period when a
     Registration Statement has not been declared effective, sales are suspended
     or Northrop or others fail to deliver a prospectus or utilize a prospectus
     that Northrop has been advised is inaccurate; provided, however, that the
     indemnity agreement contained in this Section 6(b) shall not apply to
     amounts paid in settlement of any such loss, claim, damage, liability or
     action if such settlement is effected without the consent of Northrop and
     the Holder, which consent shall not be unreasonably withheld; provided,
     further, that in no event shall any indemnity under this Section 6(b)
     exceed the net proceeds from the offering received by Northrop or such
     Holder.

          (c)  Procedures. Promptly after receipt by an indemnified party under
               ----------
     this Section 6 of notice of the commencement of any action (including any
     governmental action), such indemnified party will, if a claim in respect
     thereof is to be made against any indemnifying party under this Section 6,
     deliver to the indemnifying party a written notice of the commencement
     thereof and the indemnifying party shall have the right to participate in,
     and, to the extent the indemnifying party so desires, jointly with any
     other indemnifying party similarly noticed, to assume the defense thereof
     with counsel mutually satisfactory to the parties; provided, however, that
     an indemnified party (together with all other indemnified parties which may
     be represented without conflict by one counsel reasonably acceptable to the
     Company) shall have the right to retain one separate counsel (plus
     appropriate local counsel), with the fees and expenses to be paid by the
     indemnifying party, if representation of such indemnified party by the
     counsel retained by the indemnifying party would be inappropriate due to
     actual or potential differing interests between such indemnified party and
     any other party represented by such counsel in such proceeding. The failure
     to deliver written notice to the indemnifying party within a reasonable
     time of the commencement of any such action, if prejudicial in any material
     respect to its ability to defend such action, shall to the extent
     prejudicial relieve such indemnifying party of any liability to the
     indemnified party under this Section 6, but the omission so to deliver
     written notice to the indemnifying party will not relieve it of any
     liability that it may have to any indemnified party otherwise than under
     this Section 6.

          (d)  Contribution. If the indemnification provided for in this Section
               ------------
     6 from the indemnifying party is unavailable to an indemnified party
     hereunder in respect of any losses, claims, damages, liabilities or
     expenses referred to therein, then the indemnifying party, in lieu of
     indemnifying such indemnified party, shall contribute to the amount paid or
     payable by such indemnified party as a result of such losses, claims,
     damages, liabilities or expenses in such proportion as is appropriate to
     reflect the relative fault of the indemnifying party on the one hand and
     the indemnified party or parties on the other in connection with the
     actions which resulted in such losses, claims, damages, liabilities or
     expenses, as well as any other relevant equitable considerations. The
     relative fault of such indemnifying party and indemnified parties shall be
     determined by reference to,

                                       7
<PAGE>

     among other things, whether any action in question, including any untrue or
     alleged untrue statement of a material fact or omission or alleged omission
     to state a material fact, has been made by, or related to information
     supplied by, such indemnifying party or indemnified parties, and the party
     or parties' relative intent, knowledge, access to information and
     opportunity to correct or prevent such action; provided, however, that in
     no event shall the liability of Northrop hereunder be greater in amount
     than the difference between the dollar amount of the proceeds received by
     Northrop and all Holders upon the sale of the Registrable Shares giving
     rise to such contribution obligation and all amounts previously contributed
     by Northrop with respect to such losses, claims, damages, liabilities and
     expenses. The amount paid or payable to a party as a result of the losses,
     claims damages, liabilities and expenses referred to above shall be deemed
     to include any legal or other fees or expenses reasonably incurred by such
     party in connection with any investigation or proceeding.

     The parties hereto agree that it would not be just and equitable if
     contribution pursuant to this Section 6(d) were determined by pro rata
                                                                   --------
     allocation or by any other method of allocation which does not take into
     account the equitable considerations referred to in the immediately
     preceding paragraph.  No person guilty of fraudulent misrepresentation
     (within the meaning of Section 11(f) of the Securities Act) shall be
     entitled to contribution from any Person who was not guilty of such
     fraudulent misrepresentation.

          (e)  Survival. The obligations of the Company and Northrop and any
     Holders under this Section 6 shall survive the completion of any offering
     of Registrable Shares in a registration statement under this Agreement, and
     otherwise.

     7.   Reports Under Exchange Act. With a view to making available to
          --------------------------
Northrop and the Holders the benefits of Rule 144 promulgated under the
Securities Act and any other rule or regulation of the Commission that may at
any time permit Northrop or a Holder to sell securities of the Company to the
public without registration generally, the Company agrees to use reasonable
commercial efforts to:

          (a)  make and keep public information available, as those terms are
     understood and defined in Rule 144;

          (b)  file with the Commission in a timely manner all reports and other
     documents required of the Company under the Securities Act and the Exchange
     Act; and

          (c)  furnish to Northrop and any Holder, so long as Northrop or the
     Holder owns any Registrable Shares, promptly upon request (i) a written
     statement by the Company that it has complied with the reporting
     requirements of Rule 144, the Securities Act and the Exchange Act, (ii) a
     copy of the most recent

                                       8
<PAGE>

     annual and/or quarterly report of the Company and such other reports and
     documents so filed by the Company, and (iii) such other information as may
     be reasonably requested in availing Northrop of any rule or regulation of
     the Commission which permits the selling of any Registrable Shares without
     registration or pursuant to such form.

     8.   Amendment of Registration Rights. Any provision of this Agreement may
          --------------------------------
be amended and the observance thereof may be waived (either generally or in a
particular instance and either retroactively or prospectively) only with the
written consent of the Company and Northrop.  Any amendment or waiver effected
in accordance with this Section 8 shall be binding upon Northrop and each Holder
of any Registrable Shares then outstanding, each future holder of all such
Registrable Shares and the Company.

     9.   [Reserved]

     10.  Restrictions on Public Sale by Holders. Notwithstanding anything
          --------------------------------------
contained herein, each Holder of Registrable Securities agrees not to effect any
public sale or distribution of any Registrable Securities being registered
except during the period beginning three (3) business days after the release of
each of the Company's quarterly earnings announcements and continuing for thirty
(30) days thereafter.

     11.  Termination. The rights provided in this Agreement shall terminate on
the first anniversary of the effective date of this Agreement as to the
Registrable Shares issued at the Closing of the APA, and one year following the
date of first exercise of a Warrant as to all Registrable Shares subject to the
Warrant(s).

     12.  Governing Law. THIS AGREEMENT SHALL BE CONSTRUED, INTERPRETED AND THE
          -------------
RIGHTS OF THE PARTIES DETERMINED IN ACCORDANCE WITH THE LAWS OF THE STATE OF
DELAWARE (WITHOUT REGARD TO THE CONFLICT OF LAWS PROVISIONS THEREOF).

     13.  Counterparts. This Agreement may be executed in two or more
          ------------
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

     14.  Titles and Subtitles. The titles and subtitles used in this Agreement
          --------------------
are used for convenience only and are not to be considered in construing or
interpreting this Agreement.

     15.  Negotiation of Agreement. Each of the parties acknowledges that it
          ------------------------
has been represented by legal counsel of its choice throughout all negotiations
that have preceded the execution of this Agreement and that it has executed the
same with consent and upon the advice of said legal counsel. Each party and its
counsel cooperated in the drafting and preparation of this Agreement and the
documents referred to herein, and any and all drafts relating thereto shall be
deemed the work product of the parties and may not

                                       9
<PAGE>

be construed against any party by reason of its preparation. Accordingly, any
rule of law or any legal decision that would require interpretation of any
ambiguities in this Agreement against the party that drafted it is of no
application and is hereby expressly waived. The provisions of this Agreement
shall be interpreted in a reasonable manner to effect the intentions of the
parties and this Agreement.

     16.  Notices. Any notice, request, instruction or other document to be
          -------
given hereunder by any party hereto to another party hereto shall be in writing,
shall be deemed to have been duly given or delivered when delivered personally
or telecopied (receipt confirmed, with a copy sent by reputable overnight
courier), or one business day after delivery to a reputable overnight courier,
postage prepaid, to the address of the party set forth below such person's
signature on this Agreement or to such address as the party to whom notice is to
be given may provide in a written notice to the other party to this Agreement, a
copy of which written notice shall be on file with the Secretary of the Company.

     17.  Severability. If one or more provisions of this Agreement are held to
          ------------
be unenforceable under applicable law, such provision shall be excluded from
this Agreement and the balance of the Agreement shall be interpreted as if such
provision were so excluded and shall be enforceable in accordance with its terms
to the fullest extent permitted by law.

     18.  Further Assurances. Each of the parties shall, without further
          ------------------
consideration, use reasonable efforts to execute and deliver such additional
documents and take such other action as the other party, may reasonably request
to carry out the intent of this Agreement and the transactions contemplated
hereby.

     19.  Transfer or Assignment of Registration Rights. The rights to cause
          ---------------------------------------------
the Company to register Registrable Securities may not be transferred or
assigned by Northrop.

     20.  Successors and Assigns. This Agreement shall be binding upon, and all
          ----------------------
rights hereto shall inure to the benefit of, the parties hereto, and their
respective successors and permitted assigns.

     21.  Entire Agreement. This Agreement embodies the entire agreement and
          ----------------
understanding of the parties hereto in respect of the actions and transactions
contemplated by this Agreement. There are no restrictions, promises,
inducements, representations, warranties, covenants or undertakings with regard
to the registration of the Company's capital stock pursuant to the Securities
Act, other than those expressly set forth or referred to in this Agreement.

     22.  Recapitalizations, etc. The provisions of this Agreement (including
          ----------------------
any calculation of share ownership) shall apply, to the full extent set forth
herein with respect to the Registrable Shares, to any and all shares of capital
stock of the Company or any

                                       10
<PAGE>

capital stock, partnership units or, any other security evidencing ownership
interests in any successor or assign of the Company (whether by merger,
consolidation, sale of assets or otherwise) that may be issued in respect of, in
exchange for, or in substitution of the Common Stock by reason of any stock
dividend, split, combination, recapitalization, liquidation, reclassification,
merger, consolidation or otherwise.

     23.  Third Party Beneficiary. There are no third party beneficiaries of
          -----------------------
this Agreement.

     24.  Specific Performance. The parties hereto agree that irreparable
          --------------------
damage would occur in the event any provision of this Agreement were not
performed in accordance with the terms hereof and that the parties shall be
entitled to specific performance of the terms hereof, in addition to any other
remedy at law or in equity.

          In Witness Whereof, the parties have executed this Agreement on the
date and year above written.

                                        Satcon Technologies Corporation


                                        By: /s/ David B. Eisenhaure
                                            ---------------------------
                                        Its: President
                                             --------------------------

                                        Northrop Grumman Corporation


                                        By: /s/ Albert Myers
                                            ---------------------------
                                        Its: Corporate Vice President
                                             and Treasurer

                                       11