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 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(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0287 Expires: January 31, 2005 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person * SMART HYDROGEN, INC.   2. Issuer Name and Ticker or Trading Symbol PLUG POWER INC [PLUG] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 135 ARCH. MAKARIOS III AVENUE, EMELLE BLDG., 2ND FLOOR, OFFICE NO.22 3. Date of Earliest Transaction (Month/Day/Year) 10/09/2007 (Street) LIMASSOL, CYPRUS CY-3021  4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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 Common Stock, par value $0.01 per share 10/09/2007   P   40,000 A $ 3.071 (3) 4,645,940 D (1)   Common Stock, par value $0.01 per share 10/10/2007   P   40,764 A $ 3.0823 (3) 4,686,704 D (1)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	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.		SEC 1474 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction 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 (Month/Day/Year)

7. Title and Amount of Underlying Securities (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

Class B Capital Stock, par value $0.01

(2)

(2)

(2)

Common Stock, par value $0.01

39,500,000 (2)

395,000

D (1)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SMART HYDROGEN, INC. 135 ARCH. MAKARIOS III AVENUE EMELLE BLDG., 2ND FLOOR, OFFICE NO.22 LIMASSOL, CYPRUS CY-3021		X
MMC NORLISK NICKEL 22 VOZNESENSKY PEREULOK MOSCOW, RUSSIA 125009		X
Clayburn Development Inc. PASEA ESTATE ROAD TOWN TORTOLA, BVI		X
Branton LTD KINGS COURT, 1ST FLOOR BAY STREET, P.O. BOX N-3944 NASSAU, BAHAMAS		X
PROKHOROV MIKHAIL D 22 VOZNESENSKY PEREULOK MOSCOW, RUSSIA 125009		X
POTANIN VLADIMIR O 9 BOLSHAYA YAKIMANKA STREET MOSCOW, RUSSIA 119180		X

Signatures

/s/ Athina Karelidou, Director of Smart Hydrogen Inc.		10/09/2007
**Signature of Reporting Person		Date
/s/ Denis S. Morozov, CEO and Chairman of the Management Board of MMC Norilsk Nickel		10/09/2007
**Signature of Reporting Person		Date
/s/ Sergey Gorskiy, Attorney-In-Fact for Clayburn Development Inc.		10/09/2007
**Signature of Reporting Person		Date
/s/ Maria Lambrianidou, Dierctor of Branton Limited		10/09/2007
**Signature of Reporting Person		Date
/s/ Mikhail D. Prokhorov		10/09/2007
**Signature of Reporting Person		Date
/s/ Vladimir O. Potanin		10/09/2007
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	The shares reported above are held directly by Smart Hydrogen Inc. ("Smart Hydrogen"), which is jointly owned and controlled by Clayburn Development Inc. ("Clayburn") and Branton Limited ("Branton"). Branton and Clayburn share investment control and controlling shareholder status over Smart Hydrogen and, as such, are indirect beneficial owners of the reported shares of Common Stock and Class B Capital Stock. Clayburn is a wholly-owned subsidiary of MMC Norilsk Nickel ("Norilsk"). Therefore, Norilsk is an indirect beneficial owner of the reported shares of Common Stock. Mikhail D. Prokhorov and Vladimir O. Potanin share investment control and controlling shareholder status over Branton and Norilsk and, as such, are indirect beneficial owners of the reported shares of Common Stock and Class B Capital Stock.
(2)	Each share of Class B Capital Stock is convertible at any time into 100 shares of Plug Power Inc.'s Common Stock, par value $0.01 per share, subject to certain adjustments in the case of a stock split or reverse stock split of the Common Stock or a reorganization, recapitalization, reclassification, consolidation or merger involving Plug Power Inc.
(3)	This is the average price per share of the securities acquired.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.