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UNITED STATES
SECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

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FORM 10-K/A

AMENDMENT NO. 1 TO FORM 10-K

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the Fiscal Year Ended September 30, 2003

Commission file number 1-11512

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SATCON TECHNOLOGY CORPORATION(Exact name of registrant as specified in its charter)

|Delaware(State or other jurisdiction of incorporation or organization)                                                         |  | 04-2857552(I.R.S. Employer Identification Number)
|------------------------------------------------------------------------------------------------------------------------------ |  | -------------------------------------------------
|161 First Street, Cambridge, Massachusetts(Address of principal executive offices)                                             |  | 02142(Zip Code)                                  
|(617) 661-0540(Registrant's telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
|Title of Class
Common Stock, $.01 Par ValueSecurities registered pursuant to Section 12(g) of the Act: None                   

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Indicate
by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the
preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past
90 days. Yes ý    No o

Indicate
by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of
registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. ý

Indicate
by check mark whether the Registrant is an accelerated filer (as defined in Exchange Act
Rule 12b-2). Yes ý    No o

The
aggregate market value of the Registrant's Common Stock, $.01 par value per share, held by non-affiliates of the Registrant was $11,897,507 based on the last reported
sale price of the Registrant's Common Stock on the Nasdaq National Market as of the close of business on the last business day of the Registrant's most recently completed second fiscal quarter
($0.79). There were 24,917,671 shares of Common Stock outstanding as of December 9, 2003.

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This Amendment No. 1 to Form 10-K/A to the Registrant's Annual Report on Form 10-K for the fiscal year ended September 30, 2003
("Fiscal 2003") is being filed to add certain information required to be set forth in Part III. Items 10, 11, 12, 13 and 14 of Part III of the Registrant's Annual Report on
Form 10-K for Fiscal 2003, as filed with the Securities and Exchange Commission on December 23, 2003, are hereby amended and restated in their entirety as follows:

PART III

Item 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT



The Corporation has a classified Board of Directors (the "Board") consisting of three Class I directors, two Class II directors and two
Class III directors. At each Annual Meeting of Stockholders, directors are elected for a full term of three years to succeed those whose terms are expiring.

For
each member of the Board there follows information given by each concerning his principal occupation and business experience for the past five years, the name of other publicly held
companies on which he serves as a director and his age and length of service as a director of the Corporation.

No
director or executive officer is related by blood, marriage or adoption to any other director or executive officer.

Pursuant
to the Securities Purchase Agreement (the "1999 Securities Purchase Agreement"), dated as of October 21, 1999, between the Corporation and Mechanical Technology
Incorporated ("MTI"), Mr. Goldberg was elected to the Board as of November 15, 1999. Pursuant to the terms of the 1999 Securities Purchase Agreement, as long as MTI owned five percent
(5%) of the Common Stock, the Corporation was required to recommend that the Corporation's stockholders vote for MTI's
representative. MTI no longer owns 5% of the Common Stock, and the Corporation no longer has the obligation of recommending that its stockholders vote for MTI's representative. The Corporation had
also agreed to appoint an additional member to the Board based on the recommendations by MTI. Based on such recommendations, Dr. Wilson was elected to the Board in July 2000.

Current DirectorsTerms Expiring in 2004 (Class I Directors)

David B. Eisenhaure, age 58, became a director in 1985.

David B. Eisenhaurejoined the Corporation as President, Chief Executive Officer and Chairman of the Board in 1985. Prior to founding the
Corporation, Mr. Eisenhaure was associated with the Charles Stark Draper Laboratory, Incorporated from 1974 to 1985, and with its predecessor, the Massachusetts Institute of Technology's
Instrumentation Laboratory, from 1967 to 1974. Mr. Eisenhaure holds S.B., S.M. and an Engineer's Degree in Mechanical Engineering from the Massachusetts Institute of Technology ("M.I.T.").
Mr. Eisenhaure previously held an academic position at M.I.T., serving as a lecturer in the Department of Mechanical Engineering. Mr. Eisenhaure also serves on the board of directors of
Mechanical Technology Incorporated and Implant Sciences Corporation.

Alan P. Goldberg, age 58, became a director in 1999.

Alan P. Goldbergjoined the Corporation as a director in 1999. Mr. Goldberg serves as President and has been a member of the board
of directors of First Albany Companies Inc., an investment bank, since 1993. Mr. Goldberg is active in industry and civic organizations and serves on the board of several
non-profit institutions. He received a B.A. degree in Government from Tufts University.

James L. Kirtley, Jr., age 58, became a director in 1992.

James L. Kirtley, Jr.,joined the Corporation as a consultant in 1985 and became a director in 1992. On March 1, 1998,
Dr. Kirtley commenced employment with the Corporation on a full-time basis as the Vice President and General Manager of the Corporation's Technology Center. In February 2000,
Dr. Kirtley was appointed Vice President and Chief Scientist of the Corporation, a position he serves as

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a
part-time employee. Dr. Kirtley is also a Professor of Electrical Engineering at M.I.T. and became a member of the M.I.T. faculty in 1971. Dr. Kirtley received his S.B.,
S.M., E.E. and Ph.D. degrees in Electrical Engineering from M.I.T.

Current DirectorsTerms Expiring in 2005 (Class II Directors)

Michael C. Turmelle, age 44, became a director in 1993.

Michael C. Turmellejoined the Corporation in September 1987, where he served as Controller from September 1987 until
November 1991, as Secretary from June 1993 until May 2001 and as Vice President, Chief Financial Officer and Treasurer from November 1991 until January 2000.
Mr. Turmelle became a director in June 1993. In January 2000, Mr. Turmelle was promoted from Chief Financial Officer to Chief Operating Officer. From July 1984 to
August 1987, Mr. Turmelle held several positions with HADCO Corporation, a manufacturer of circuit boards. From February 1982 to June 1984, Mr. Turmelle was employed
by the aerospace division of General Electric Corporation and held several positions, including internal auditor. Mr. Turmelle holds a B.A. degree in Economics from Amherst College.

Gerald L. Wilson, age 64, became a director in 2000.

Gerald L. Wilsonjoined the Corporation as a director in July 2000. Dr. Wilson is the former Dean of the School of
Engineering at M.I.T. and the Vannevar Bush Professor of Engineering at M.I.T. Dr. Wilson has served on M.I.T.'s faculty since 1965 and currently serves as a Professor of Electrical and
Mechanical Engineering. Dr. Wilson also served as the Chairman of the Science Advisory Board of General Motors Corporation and currently serves as the Chairman of the Science Advisory Board of
Pratt and Whitney, a division of United Technologies Corporation, and as a member of the science advisory board for Cummins Engine Company, Inc. He is a director of NSTAR, a company formed by
the merger of BEC Energy and Commonwealth Energy System. Dr. Wilson is also a director of Analogic Corporation. Dr. Wilson received his S.B. and S.M. in Electrical Engineering and his
Sc.D. in Mechanical Engineering from M.I.T.

Current DirectorsTerms Expiring in 2006 (Class III Directors)

Marshall J. Armstrong, age 68, became a director in 1994.

Marshall J. Armstrongjoined the Corporation as a director in 1994. Mr. Armstrong previously served as Chief Executive Officer and
Chairman of the Board of Thermo Power Corporation from 1992 through 1997. Thermo Power provides research and development relating to engines, cogeneration and refrigeration equipment to the marine,
food processing, transportation, power generating, petrochemical and pharmaceutical industries. From January 1998 to September 1999, Mr. Armstrong served as Senior Vice President
of Thermo Electron Corporation, where he had been employed since 1968 in various capacities including management of Thermo Electron's government affairs. Mr. Armstrong previously served as a
director of Thermo Sentron, Inc. Mr. Armstrong holds an M.S. degree from George Washington University and a B.S. degree in Mechanical Engineering from the University of Vermont.

Anthony J. Villiotti, age 57, became a director in 2002.

Anthony J. Villiottifirst joined the Corporation as a director in June 1997. Following his resignation from the Board in
January 2000, Mr. Villiotti re-joined the Corporation as a director in January 2002. Mr. Villiotti formerly served as Vice President and Chief Financial Officer
of AquaSource, Inc., a water resource management company, where he was responsible for all financial and information technology activities from May 1999 until his retirement in
August 2003. From October 1993 until May 1999, Mr. Villiotti served as Vice President, Treasurer and Controller of DQE Enterprises, where he was responsible for identifying
and implementing investment opportunities and for all financial and administrative activities. From June 1990 through October 1993, Mr. Villiotti served as Treasurer and
Controller of DQE Enterprises. Mr. Villiotti holds a B.S. degree in accounting from Pennsylvania State University.

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Executive Officers of the Corporation

Ralph M. Norwood, age 60, became an Executive Officer in 2002.

Ralph M. Norwoodjoined the Corporation in February 2002 and serves as Vice President of Finance, Chief Financial Officer and
Treasurer. Prior to joining the Corporation, Mr. Norwood served as an independent financial consultant from June 2000 until February 2002. From 1976 to June 2000,
Mr. Norwood was employed by the Polaroid Corporation, an instant imaging company and manufacturer of instant cameras, where he served in several financial positions including as Vice President
and Corporate Controller from 1989 to 1996 and as Vice President and Treasurer from 1996 until his departure in June 2000. Mr. Norwood is a Certified Public Accountant and received his
M.B.A. degree from the Darden School at the University of Virginia.

For
additional information relating to Executive Officers of the Corporation, see disclosure regarding Messrs. Eisenhaure and Turmelle and Dr. Kirtley set forth under the
heading "Directors of the Corporation."

For
information relating to shares of Common Stock owned by each of the directors and executive officers of the Corporation, see "Item 12. Security Ownership of Certain Beneficial Owners
and Management and Related Stockholder Matters."

Audit Committee of the Corporation

The Company has a separately designated standing audit committee established in accordance with section 3(a)(58)(A) of the Securities Exchange Act of 1934,
as amended (the "Exchange Act"). The Audit Committee consists of Messrs. Armstrong, Goldberg, Villiotti and Wilson.

The
Board of Directors of the Company has determined that Mr. Villiotti qualifies as an audit committee financial expert under Item 401(h) of Regulation S-K. Mr
Villiotti is "independent" as that term is used in Item 7(d)(3)(iv) of Schedule 14A of the Exchange Act.

Section 16(a) Beneficial Ownership Reporting Compliance

Section 16(a) of the Exchange Act requires the Corporation's directors, executive officers and holders of more than 10% of the Common Stock to file with
the Securities and Exchange Commission (the "SEC") initial reports of ownership of the Common Stock and other equity securities on a Form 3 and reports of changes in such ownership on a
Form 4 or Form 5. Officers, directors and 10% stockholders are required by SEC regulations to furnish the Corporation with copies of all Section 16(a) forms they file. To the
Corporation's knowledge, based solely on a review of the Corporation's records and written
representations by the persons required to file such reports, all filing requirements of Section 16(a) were satisfied with respect to the Corporation's most recent fiscal year.

Code of Ethics

The Corporation has adopted a code of ethics that applies to the Corporation's principal executive officer, principal financial officer and principal accounting
officer. Please see Exhibit 14.1 to this Form 10-K.

Item 11.    EXECUTIVE COMPENSATION



Summary Compensation Table.The following table sets forth information concerning the annual and long-term
compensation for services rendered to the Corporation for the fiscal years ended September 30, 2003, 2002 and 2001, of those persons who were at September 30, 2003 (i) the chief
executive officer of the Corporation and (ii) each other executive officer of the Corporation whose annual compensation exceeded $100,000.

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SUMMARY COMPENSATION TABLE

|                                                                                     |  |                |  |     |                         |  |   |             |  | Long-Term
Compensation
Awards
Securities
Underlying
Options (#) |                         |     |            
|------------------------------------------------------------------------------------ |  | -------------- |  | --- | ----------------------- |  | - | ----------- |  | --------------------------------------------------------------- | ----------------------- | --- | -----------
|
|
|David B. Eisenhaure
President, Chief Executive Officer and Chairman of the Board     |  | 2003
2002
2001 |  | $$$ | 305,177
304,008
284,381 |  | $ | 

100,000 |  | $$$                                                             | 5,600(2
3,900(2
5,500(2 | ))) | 

100,000
|Michael C. Turmelle
Vice President, Chief Operating Officer and Director             |  | 2003
2002
2001 |  | $$$ | 230,889
230,004
209,628 |  | $ | 

60,000  |  | $$$                                                             | 5,600(2
3,900(2
5,500(2 | ))) | 

100,000
|Ralph M. Norwood(1)
Vice President of Finance, Chief Financial Officer and Treasurer |  | 2003
2002      |  | $$  | 210,810
134,886         |  |   | 
         |  |                                                                 | 
                     |     | 
150,000  

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Option Grants Table.There were no individual grants of stock options to purchase the Common Stock made to the executive
officers named in the Summary Compensation Table during Fiscal 2003.

Aggregated Option Exercises and Fiscal Year-End Option Value Table.The following table sets forth certain
information regarding stock options exercised during Fiscal 2003 and held as of September 30, 2003 by the executive officers named in the Summary Compensation Table.

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AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR  AND FISCAL YEAR-END OPTION VALUES

|                    |  |   |  |   |  | Number of Securities
Underlying
Unexercised
Options at Fiscal
Year-End(#) |  | Value of
Unexercised
In-The-Money
Options at Fiscal
Year-End($)(2)
|------------------- |  | - |  | - |  | ------------------------------------------------------------------------- |  | ------------------------------------------------------------------
|
|David B. Eisenhaure |  |  |  |  |  | 237,500/75,000                                                            |  | $                                                                 
|Michael C. Turmelle |  |  |  |  |  | 215,013/70,437                                                            |  | $                                                                 
|Ralph M. Norwood    |  |  |  |  |  | 60,000/90,000                                                             |  | $                                                                 

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Compensation of Directors

Outside (non-employee) directors receive $2,500 per quarter as a retainer for serving as a director. Outside directors receive an additional $1,000
per Board meeting if attended in person, or $500 per Board meeting if attended by telephone. The Corporation also pays all out of pocket expenses reasonably incurred by outside directors in attending
Board meetings. Employee directors receive a fee of $200 for each Board meeting attended, as well as a retainer of $900 per quarter.

During
Fiscal 2003, the Corporation granted stock options to purchase shares of the Corporation's Common Stock to the members of the Board as follows: Mr. Armstrong: 20,000;
Mr. Goldberg: 23,000; Mr. Villiotti: 23,000; and Dr. Wilson: 20,000. The stock option exercise price is $0.70 per share, and these stock options were immediately exercisable upon
grant.

On
April 11, 2002, to encourage ownership in the Corporation by outside directors, to provide such directors with a further incentive to remain as directors and to align the
interests of such directors with the interests of the Corporation's stockholders, the Board adopted a director stock option program. Pursuant to this program, (i) each individual who first
becomes an outside director of the Corporation will receive a nonstatutory stock option to purchase 15,000 shares of the Common Stock on the date of his or her initial election to the Board; and
(ii) on the date of each Annual Meeting of Stockholders of the Corporation commencing with the 2002 Annual Meeting of Stockholders (other than a director who was initially elected to the Board
at any such Annual Meeting of Stockholders or, if previously, at any time after the prior year's Annual Meeting of Stockholders), provided that he or she is serving as a director immediately following
the date of such Annual Meeting of Stockholders, (a) each outside director who is serving on the Corporation's Audit Committee will be granted a nonstatutory stock option to purchase an
additional 5,000 shares of the Common Stock and (b) each outside director who is serving on the Compensation Committee will be granted a nonstatutory stock option to purchase an additional
3,000 shares of the Common Stock. These nonstatutory stock options will be immediately exercisable and will have exercise prices equal to the closing price of the Common Stock on the NASDAQ National
Market on the date of grant.

Employment Contracts, Termination of Employment and Change-in-Control Arrangements

The Corporation has entered into Key Employee Agreements (the "Employee Agreements") with Messrs. Eisenhaure and Turmelle, which expire on June 30,
2004. The Employee Agreements provide for automatic renewal for three-year periods unless written notice of termination is given by either party not less than three months prior to the
expiration date. In addition, pursuant to the Employee Agreements, each of Messrs. Eisenhaure and Turmelle is entitled to receive benefits offered to the

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Corporation's
employees generally as well as a severance payment equal to 100% of his annual salary, payable in twelve equal monthly installments if (i) the Corporation or a substantial portion
of the Corporation is acquired without the approval of the Board; (ii) his employment is terminated without cause or (iii) without his consent, his salary is reduced, there is a
substantial change in his position, there is a change in his principal place of employment from the greater Boston, Massachusetts area or the Employee Agreement is not renewed following the expiration
of its term. The Employee Agreements also contain provisions prohibiting Messrs. Eisenhaure and Turmelle from competing with the Corporation for a one-year period following
termination of employment.

Compensation Committee Interlocks and Insider Participation

During Fiscal 2003, Messrs. Goldberg and Villiotti, both of whom are independent, in accordance with Nasdaq requirements, served as members of the
Compensation Committee. Neither member was ever an officer or an employee of the Corporation. For information regarding Mr. Goldberg's relationship with Mechanical Technology Incorporated, see
"Item 13. Certain Relationships and Related Transactions."

Item 12.    SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS



The following table provides information about the securities authorized for issuance under the Corporation's equity compensation plans as of September 30,
2003.

EQUITY COMPENSATION PLAN INFORMATION

|                                                           |  |           |     |   |       | (c) |          
|---------------------------------------------------------- |  | --------- | --- | - | ----- | --- | ---------
|
|
|
|
|Equity compensation plans approved by security holders     |  | 3,027,682 |     | $ | 8.09  |     | 960,939  
|Equity compensation plans not approved by security holders |  | 41,000    | (2) | $ | 17.56 |     | 175,000  
|Total                                                      |  | 3,068,682 |     | $ | 8.21  |     | 1,135,939

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On
January 19, 2000, the Board granted to four of the Corporation's employees options exercisable in the aggregate of up to 216,000 shares of Common Stock outside of the
Corporation's stockholder-approved equity compensation plans. The terms of these options are substantially similar to those of nonstatutory stock options issued under the Corporation's
shareholder-approved 1999 Stock Incentive Plan.

Security Ownership of Certain Beneficial Owners and Management

The following table sets forth, as of December 31, 2003, certain information concerning the beneficial ownership of the Common Stock by (i) each
person known by the Corporation to own beneficially five percent (5%) or more of the outstanding shares of the Common Stock; (ii) each of the Corporation's executive officers and directors and
(iii) all executive officers and directors as a group.

The
number of shares beneficially owned by each 5% stockholder, director or executive officer is determined under rules of the SEC, and the information is not necessarily indicative of
beneficial ownership for any other purpose. Under such rules, beneficial ownership includes any shares as to which the individual or entity has sole or shared voting power or investment power and also
any shares which the individual or entity has the right to acquire on or before February 29, 2004 through the exercise of any stock option, warrant or other right. Unless otherwise indicated,
each person or entity
has sole investment and voting power (or shares such power with his spouse) with respect to the shares set forth in the following table. The inclusion herein of any shares deemed beneficially owned
does not constitute an admission of beneficial ownership of those shares.

|Name and Address of Beneficial Owner(1)                                                |  | Number of Shares
Beneficially Owned(2) |  | Percentage of
Common Stock
Beneficially Owned |  
|-------------------------------------------------------------------------------------- |  | -------------------------------------- |  | --------------------------------------------- | -
|Directors and Named Executive Officers                                                 |  |                                        |  |                                               |  
|Marshall J. Armstrong                                                                  |  | 72,000                                 |  | *                                             |  
|David B. Eisenhaure(3)                                                                 |  | 3,146,379                              |  | 12.4                                          | %
|Alan P. Goldberg(4)
c/o First Albany Corporation
30 Pearl Street, #P1
Albany, NY 12207 |  | 99,500                                 |  | *                                             |  
|James L. Kirtley, Jr.                                                                  |  | 151,323                                |  | *                                             |  
|Ralph M. Norwood                                                                       |  | 109,187                                |  | *                                             |  
|Michael C. Turmelle                                                                    |  | 338,357                                |  | 1.3                                           | %
|Anthony J. Villiotti                                                                   |  | 46,000                                 |  | *                                             |  
|Gerald L. Wilson                                                                       |  | 61,500                                 |  | *                                             |  
|All executive officers and directors as a group (eight persons)(3)(4)                  |  | 4,026,137                              |  | 15.4                                          | %

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Item 13.    CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS



In October 1999, the Corporation acquired Ling Electronics, Inc. and Ling Electronics, Ltd. from Mechanical Technology Incorporated ("MTI").
In consideration for the acquisition of Ling Electronics, MTI received 770,000 shares of Common Stock. Also in October 1999, the Corporation received an investment by MTI. In consideration for
its investment, MTI received a total of 1,030,000 shares of Common Stock and warrants to purchase an additional 100,000 shares of Common Stock at an exercise price of $8.80 per share. On
October 21, 1999, MTI funded $2,570,000 of its investment in the Corporation and received 370,800 of the 1,030,000 shares of Common Stock and a warrant to purchase 36,000 of the 100,000 shares
of Common Stock. MTI made the remaining investment on January 31, 2000 of $4,500,000 and received the remaining 659,200 shares of Common Stock and a warrant to purchase the remaining 64,000
shares of Common Stock. In addition, the Company received a warrant to purchase 108,000 shares of MTI's common stock on October 21, 1999 and a warrant to purchase 192,000 shares of MTI's common
stock on January 31, 2000 at exercise prices of $12.56 per share. In connection with these transactions, Alan P. Goldberg, formerly a director of MTI and President of First Albany
Companies Inc. was elected a member of the Board on November 15, 1999. Mr. Goldberg resigned from the board of directors of MTI in December 2002. The Corporation had also
agreed to appoint an additional member to the Board based on recommendations by MTI. Based on such recommendations, Dr. Wilson was elected to the Board in July 2000. In addition, MTI
agreed to appoint Mr. Eisenhaure to its board of directors. Mr. Eisenhaure currently serves on the board of directors of MTI.



On July 19, 2000, the Corporation entered into a consulting agreement with Marshall J. Armstrong, one of its directors. In consideration for
Mr. Armstrong providing consulting, advisory and related services under the consulting agreement, the Corporation has agreed to pay Mr. Armstrong $2,000 per day (which amount will be
proportionately less for partial days) for services performed as well as reimbursement of reasonable and necessary expenses incurred by Mr. Armstrong in connection with the consulting
agreement. To date, the Corporation has paid Mr. Armstrong $3,000 under the terms of the consulting agreement since entering into the consulting agreement in July 2000. During fiscal
year 2003, the Corporation did not utilize Mr. Armstrong's consulting services and did not pay Mr. Armstrong any consulting fees under the terms of the consulting agreement. The
consulting agreement has been terminated.

The
Corporation believes that each of the transactions described above was carried out on terms that were no less favorable to the Corporation than those that would have been obtained
from unaffiliated third parties.

For
executive officer compensation and option exercise information, see "Compensation of Executive Officers."

Item 14.    PRINCIPAL ACCOUNTING FEES AND SERVICES

Audit Fees

Grant Thornton LLP ("Grant Thornton") billed fees of $300,000 during the fiscal year ended September 30, 2003 for professional services rendered for the
audit of the Corporation's financial statements included in this Annual Report on Form 10-K, the review of the financial statements

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included
in the Corporation's Quarterly Reports on Form 10-Q for the quarters ended December 28, 2002, March 29, 2003 and June 28, 2003 and review of
registration statements filed during the most recent fiscal year. Grant Thornton billed fees of $160,000 during the fiscal year ended September 30, 2002 for professional services rendered for
the audit of the Corporation's financial statements included in its Annual Report on Form 10-K for the year ended September 30, 202 and the review of the financial statements
included in the Corporation's Quarterly Report on Form 10-Q for the quarter ended June 29, 2002.

Tax Fees

Grant Thornton billed fees of $30,000 during the fiscal year ended September 30, 2003 for professional services rendered for tax compliance, tax advise and
tax planning. Grant Thornton did not bill the Corporation for any professional services during the fiscal year ended September 30, 2002.

Financial Information Systems Design and Implementation Fees

Grant Thornton did not bill the Corporation for any professional services rendered in connection with financial information systems design or implementation, the
operation of its information system or the management of its local area network in each of the last two fiscal years.

All Other Fees

Grant Thornton did not bill the Corporation for any professional services in each of the last two fiscal years.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this Annual Report on
Form 10-K/A to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Cambridge, Commonwealth of Massachusetts on January 26, 2004.

| |  | SATCON TECHNOLOGY CORPORATION
| |  | -----------------------------
| |  | By:                          

Pursuant
to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons in the capacities and on the dates indicated.

|Name                                          |  | Capacity                                                                                                |  | Date            
|--------------------------------------------- |  | ------------------------------------------------------------------------------------------------------- |  | ----------------
|/s/DAVID B. EISENHAUREDavid B. Eisenhaure     |  | Chairman of the Board of Directors, President and Chief Executive Officer (Principal Executive Officer) |  | January 26, 2004
|/s/RALPH M. NORWOODRalph M. Norwood           |  | Vice President of Finance, Chief Financing Officer and Treasurer (Principal Financial Officer)          |  | January 26, 2004
|/s/JOHN J.McCABEJohn J. McCabe                |  | Controller and Chief Accounting Officer (Principal Accounting Officer)                                  |  | January 26, 2004
|/s/MICHAEL C. TURMELLEMichael C. Turmelle     |  | Director, Vice President and Chief Operating Officer                                                    |  | January 26, 2004
|/s/JAMES L. KIRTLEY, JR.James L. Kirtley, Jr. |  | Director, Vice President and Chief Scientist                                                            |  | January 26, 2004
|/s/MARSHALL J. ARMSTRONGMarshall J. Armstrong |  | Director                                                                                                |  | January 26, 2004
|/s/ALAN P. GOLDBERGAlan P. Goldberg           |  | Director                                                                                                |  | January 26, 2004
|/s/ANTHONY J. VILIOTTIAnthony J. Villiotti    |  | Director                                                                                                |  | January 26, 2004
|/s/GERALD L. WILSONGerald L. Wilson           |  | Director                                                                                                |  | January 26, 2004

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