FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public
Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

NGP Energy Technology Partners, L.P. 		2. Issuer Name and Ticker or Trading Symbol

SATCON TECHNOLOGY CORP [ SATC ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                      _____ 10% Owner
_____ Officer (give title below)      __ X __ Other (specify below)
Director by Deputization
(Last)          (First)          (Middle)

1700 K STREET, NW, SUITE 750 		3. Date of Earliest Transaction (MM/DD/YYYY)

6/20/2012
(Street)

WASHINGTON, DC 20006
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

___ Form filed by One Reporting Person
_ X _ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8) 		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4) 		8. Price of Derivative Security
(Instr. 5) 		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (Right to Buy)   $0.224   6/20/2012     A      9500   (1)      6/20/2012   6/20/2022   Common Stock   9500   (1) $0   55500   I   See Footnote   (1)

Explanation of Responses:
( 1)  Includes 50% of the 19,000 options to purchase shares of Common Stock, at an exercise price of $0.224 per share, granted to Philip J. Deutch ("Deutch") on June 20, 2012 in connection with his service as a director of SatCon. These options became fully exercisable on the date of grant and remain exercisable until June 20, 2022. Pursuant to an agreement of limited partnership, up to 50% of the economic benefit of this grant shall be applied to reduce certain fees or costs of NGP Energy Technology Partners, L.P. ("NGP Energy Tech"). As a result, these securities may be deemed to be beneficially owned by NGP Energy Tech. NGP Energy Tech disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that NGP Energy Tech is the beneficial owner of the securities for purposes of Section 16 of the Securities Act of 1934, as amended, or for any other purpose.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
NGP Energy Technology Partners, L.P.
1700 K STREET, NW
SUITE 750
WASHINGTON, DC 20006 		X

Director by Deputization
NGP ETP, L.L.C.
1700 K STREET, NW
SUITE 750
WASHINGTON, DC 20006 		X

Director by Deputization
Energy Technology Partners, L.L.C.
1700 K STREET, NW
SUITE 750
WASHINGTON, DC 20006 		X

Director by Deputization

Signatures
NGP Energy Technology Partners, L.P., By: NGP ETP, L.L.C., Its: General Partner, By: /s/ Philip J. Deutch 6/22/2012
** Signature of Reporting Person Date

NGP ETP, L.L.C. By: /s/ Philip J. Deutch, Title: Authorized Member 6/22/2012
** Signature of Reporting Person Date

Energy Technology Partners, L.L.C., By: /s/ Philip J. Deutch, Title: Sole Member and Manager 6/22/2012
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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