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
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Powers Robert Patrick
 2. Date of Event Requiring Statement (Month/Day/Year)
06/28/2006		 3. Issuer Name and Ticker or Trading Symbol
PLUG POWER INC [PLUG]
(Last)
(First)
(Middle)
968 ALBANY SHAKER ROAD		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Acting Chief Financial Officer
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

LATHAM, NY 12110		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ 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 2,591 (1)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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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
Options to Purchase Common Stock   (2) 06/01/2015 Common Stock 4,000 $ 6.32 D  
Options to Purchase Common Stock   (3) 02/01/2016 Common Stock 6,000 $ 5.58 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Powers Robert Patrick
968 ALBANY SHAKER ROAD
LATHAM, NY 12110		       Acting Chief Financial Officer  

Signatures

/s/ Robert Patrick Powers 06/30/2006
**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) Of these shares, 591 are currently vested; 666 shares will vest on 2/1/2007; 667 shares will vest on 2/1/2008 and 2/1/2009, respectively.
(2) The stock options vest as follows: 1,333 are currently exercisable; 1,333 and 1,334 will vest on 6/1/2007 and 6/1/2008, respectively.
(3) The stock options vest as follows: 2,000 shares exercisable on 2/1/2007; 2,000 shares exercisable on 2/1/2008; and 2,000 shares exercisable on 2/1/2009.

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