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 *
  Johnson Bradley H
 2. Date of Event Requiring Statement (Month/Day/Year)
05/17/2007		 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)
VP Operations
 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 10,000 (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
Option to Purchase   (2) 11/14/2011 Common Stock 24,000 $ 8.53 D  
Option to Purchase   (3) 12/22/2013 Common Stock 100,000 $ 6.73 D  
Option to Purchase   (4) 01/28/2015 Common Stock 25,000 $ 5.39 D  
Option to Purchase   (5) 02/01/2016 Common Stock 25,000 $ 5.58 D  
Option to Purchase   (6) 02/14/2017 Common Stock 25,000 $ 3.75 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Johnson Bradley H
968 ALBANY SHAKER ROAD
LATHAM, NY 12110		       VP Operations  

Signatures

/s/ Gerard L. Conway, Jr., Attorney in Fact 06/04/2007
**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) Includes 4,999 shares of Plug Power common stock which vest on 2/1/2008 and 5,001 shares which vest on 2/1/2009. Prior to vesting, the shares are subject to forfeiture in the event that Mr. Johnson's employment with the Company is terminated.
(2) Consists of options to acquire common stock granted on 11/14/2001, all of which are exercisable.
(3) Consists of options to acquire common stock granted on 12/22/2003, all of which are exercisable.
(4) Consists of options to acquire common stock granted on 1/28/2005, with respect to which 16,665 are exercisable; 8,335 shares become exercisable on 1/28/2008.
(5) Consists of options to acquire common stock granted on 2/1/2006, with respect to which 8,332 are exercisable; 8,333 shares become exercisable on 2/1/2008 and 8,335 shares become exercisable on 2/1/2009.
(6) Consists of options to acquire common stock granted on 2/14/2007; 8,332 shares become exercisable on 2/14/2008; 8,333 shares become exercisable on 2/14/2009 and 8,335 shares become exercisable on 2/14/2010.

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