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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0001209191-08-008659.txt : 20080208
<SEC-HEADER>0001209191-08-008659.hdr.sgml : 20080208
<ACCEPTANCE-DATETIME>20080208130209
ACCESSION NUMBER:		0001209191-08-008659
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080207
FILED AS OF DATE:		20080208
DATE AS OF CHANGE:		20080208

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			POTANIN VLADIMIR O
		CENTRAL INDEX KEY:			0001260718

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27527
		FILM NUMBER:		08587891

	MAIL ADDRESS:	
		STREET 1:		9 BOLSHAYA YAKIMANKA STREET
		CITY:			MOSCOW RUSSIA
		STATE:			1Z
		ZIP:			0000

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MMC NORLISK NICKEL
		CENTRAL INDEX KEY:			0001260713

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27527
		FILM NUMBER:		08587895

	MAIL ADDRESS:	
		STREET 1:		VOZNESENSKY PEREULOK
		STREET 2:		22 USADBA CENTER MOSCOW
		CITY:			RUSSIA
		STATE:			1Z
		ZIP:			0000

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PROKHOROV MIKHAIL D
		CENTRAL INDEX KEY:			0001260715

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27527
		FILM NUMBER:		08587892

	MAIL ADDRESS:	
		STREET 1:		VOZNESENSKY PEREULOK
		STREET 2:		22 USADBA CENTER
		CITY:			MOSCOW RUSSIA
		STATE:			1Z
		ZIP:			0000

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PLUG POWER INC
		CENTRAL INDEX KEY:			0001093691
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRICAL INDUSTRIAL APPARATUS [3620]
		IRS NUMBER:				223672377
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		968 ALBANY-SHAKER ROAD
		CITY:			LATHAM
		STATE:			NY
		ZIP:			12110
		BUSINESS PHONE:		5187827700

	MAIL ADDRESS:	
		STREET 1:		968 ALBANY-SHAKER ROAD
		CITY:			LATHAM
		STATE:			NY
		ZIP:			12110

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Branton LTD
		CENTRAL INDEX KEY:			0001359849
		STATE OF INCORPORATION:			C5
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27527
		FILM NUMBER:		08587893

	BUSINESS ADDRESS:	
		STREET 1:		KING COURT, 1ST FLOOR, BAY STREET
		STREET 2:		P.O. BOX N-3944
		CITY:			NASSAU
		STATE:			C5
		ZIP:			00000
		BUSINESS PHONE:		357 25 868 000

	MAIL ADDRESS:	
		STREET 1:		KING COURT, 1ST FLOOR, BAY STREET
		STREET 2:		P.O. BOX N-3944
		CITY:			NASSAU
		STATE:			C5
		ZIP:			00000

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SMART HYDROGEN, INC.
		CENTRAL INDEX KEY:			0001359862
		STATE OF INCORPORATION:			D8
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27527
		FILM NUMBER:		08587896

	BUSINESS ADDRESS:	
		STREET 1:		135 ARCH. MAKARIOS III AVE
		STREET 2:		EMELLE BLDG 2ND FLOOR, OFFICE NO. 22
		CITY:			LIMASSOL
		STATE:			G4
		ZIP:			CY-3021
		BUSINESS PHONE:		357-2587-0762

	MAIL ADDRESS:	
		STREET 1:		135 ARCH. MAKARIOS III AVE
		STREET 2:		EMELLE BLDG 2ND FLOOR, OFFICE NO. 22
		CITY:			LIMASSOL
		STATE:			G4
		ZIP:			CY-3021

	FORMER NAME:	
		FORMER CONFORMED NAME:	Smart Hydrogen Inc
		DATE OF NAME CHANGE:	20060419

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Clayburn Development Inc.
		CENTRAL INDEX KEY:			0001359865
		STATE OF INCORPORATION:			D8
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27527
		FILM NUMBER:		08587894

	BUSINESS ADDRESS:	
		STREET 1:		PASEA ESTATE
		STREET 2:		ROAD TOWN
		CITY:			TORTOLA
		STATE:			D8
		ZIP:			00000
		BUSINESS PHONE:		357 25 87 07 62

	MAIL ADDRESS:	
		STREET 1:		PASEA ESTATE
		STREET 2:		ROAD TOWN
		CITY:			TORTOLA
		STATE:			D8
		ZIP:			00000
</SEC-HEADER>
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    <periodOfReport>2008-02-07</periodOfReport>

    <dateOfOriginalSubmission>2008-02-08</dateOfOriginalSubmission>

    <issuer>
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        <issuerName>PLUG POWER INC</issuerName>
        <issuerTradingSymbol>PLUG</issuerTradingSymbol>
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            <rptOwnerName>SMART HYDROGEN, INC.</rptOwnerName>
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            <rptOwnerStreet2>EMELLE BLDG., 2ND FLOOR, OFFICE NO.22</rptOwnerStreet2>
            <rptOwnerCity>LIMASSOL, CYPRUS CY-3021</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
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            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001260713</rptOwnerCik>
            <rptOwnerName>MMC NORLISK NICKEL</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>22 VOZNESENSKY PEREULOK</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MOSCOW, RUSSIA 125009</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
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            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001359865</rptOwnerCik>
            <rptOwnerName>Clayburn Development Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PASEA ESTATE</rptOwnerStreet1>
            <rptOwnerStreet2>ROAD TOWN</rptOwnerStreet2>
            <rptOwnerCity>TORTOLA, BVI</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
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            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
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    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001359849</rptOwnerCik>
            <rptOwnerName>Branton LTD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>KINGS COURT, 1ST FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2>BAY STREET, P.O. BOX N-3944</rptOwnerStreet2>
            <rptOwnerCity>NASSAU, BAHAMAS</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001260715</rptOwnerCik>
            <rptOwnerName>PROKHOROV MIKHAIL D</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>22 VOZNESENSKY PEREULOK</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MOSCOW, RUSSIA 125009</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001260718</rptOwnerCik>
            <rptOwnerName>POTANIN VLADIMIR O</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9 BOLSHAYA YAKIMANKA STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MOSCOW, RUSSIA 119180</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2008-02-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>150</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.99</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4989854</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2008-02-07</value>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
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                    <value>500</value>
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                <transactionPricePerShare>
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            <transactionCoding>
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                <transactionCode>P</transactionCode>
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            <transactionAmounts>
                <transactionShares>
                    <value>4300</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.02</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
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                </sharesOwnedFollowingTransaction>
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                    <value>200</value>
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                <transactionPricePerShare>
                    <value>3.035</value>
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                    <value>A</value>
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                    <value>5004154</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
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            <transactionDate>
                <value>2008-02-07</value>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
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                <transactionShares>
                    <value>14100</value>
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                <transactionPricePerShare>
                    <value>3.04</value>
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                <sharesOwnedFollowingTransaction>
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        <nonDerivativeTransaction>
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        <nonDerivativeTransaction>
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                <transactionPricePerShare>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>250</value>
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                <transactionPricePerShare>
                    <value>3.06</value>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5023804</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
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            <transactionDate>
                <value>2008-02-07</value>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4800</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.07</value>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5028604</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2008-02-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1030</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.08</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5029634</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2008-02-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>9870</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.09</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5039504</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2008-02-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2600</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.10</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5042104</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2008-02-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>9300</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.11</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5051404</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2008-02-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2600</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.12</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5054004</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2008-02-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5800</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.13</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5059804</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2008-02-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1900</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.14</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5061704</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Class B Capital Stock, par value $0.01</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>39500000</value>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, par value $0.01</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>395000</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>395000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The shares reported above are held directly by Smart Hydrogen Inc. (&quot;Smart Hydrogen&quot;), which is jointly owned and controlled by Clayburn Development Inc. (&quot;Clayburn&quot;) and Branton Limited (&quot;Branton&quot;). 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 (&quot;Norilsk&quot;). 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.</footnote>
        <footnote id="F2">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.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Athina Karelidou, Director of Smart Hydrogen Inc.</signatureName>
        <signatureDate>2008-02-08</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Denis S. Morozov, CEO and Chairman of the Management Board of MMC Norilsk Nickel</signatureName>
        <signatureDate>2008-02-08</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Andrey Smirnov, Attorney-In-Fact for Clayburn Development Inc.</signatureName>
        <signatureDate>2008-02-08</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Maria Lambrianidou, Dierctor of Branton Limited</signatureName>
        <signatureDate>2008-02-08</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Mikhail D. Prokhorov</signatureName>
        <signatureDate>2008-02-08</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Vladimir O. Potanin</signatureName>
        <signatureDate>2008-02-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----