Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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: 3235-0104
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. Date of Event Requiring Statement (Month/Day/Year)
04/10/2006		 3. Issuer Name and Ticker or Trading Symbol
PLUG POWER INC [PLUG]
(Last)
(First)
(Middle)
4 UNIVERSITY ROAD, SUITE 405		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
04/20/2006
(Street)

CAMBRIDGE, MA 02138		 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 Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock, par value $0.01 per share 2,714,700
D (1)
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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.

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Smart Hydrogen Inc
4 UNIVERSITY ROAD
SUITE 405
CAMBRIDGE, MA 02138		     X    
MMC NORLISK NICKEL
22 VOZNESENSKY PEREULOK
MOSCOW, RUSSIA 125009		     X    
Clayburn Development Inc.
PASEA ESTATE
ROAD TOWN, TORTOLA
BRITISH VIRGIN ISLANDS 		     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/ Sergey Polikarpov, Director of Smart Hydrogen Inc. 04/20/2006
**Signature of Reporting Person Date
/s/ Mikhail D. Prokhorov, CEO and Chairman of the Management Board of MMC Norilsk Nickel 04/20/2006
**Signature of Reporting Person Date
/s/ Sergey Gorskiy, Attorney-in-Fact for Clayburn Development Inc. 04/20/2006
**Signature of Reporting Person Date
/s/ Maria Lambrianidou, Director of Branton Limited 04/20/2006
**Signature of Reporting Person Date
/s/ Mikhail D. Prokhorov 04/20/2006
**Signature of Reporting Person Date
/s/ Vladimir O. Potanin 04/20/2006
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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. 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.
 
Remarks:
This filing is being made to correct the CIK code used for MCC Norilsk Nickel in the original filing and the mailing address for Smart
Hydrogen Inc.

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.