Ownership Submission
FORM 5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Form 3 Holdings Reported
Form 4 Transactions Reported
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

ANNUAL 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
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1. Name and Address of Reporting Person *
DTE ENERGY CO
 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)

2000 2ND AVENUE		 3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year)
12/31/2005
(Street)


DETROIT, MI 48226-1279		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Reporting
(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 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 at end of Issuer's Fiscal Year
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Amount (A) or (D) Price
Common Stock 05/20/2004   A4 5,333 A $ (1) 5,333 D  
Common Stock 06/01/2005   A4 6,431 A $ (1) 11,764 D  
Common Stock 12/22/2005   G 1,825,000 D $ (2) 8,804,463 I See Footnote (3)

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 2270 (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 at End of Issuer's Fiscal Year
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
(A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Option to Purchase Common Stock $ 15 10/29/1999   A4 15,000 (1)   10/29/2000 10/29/2009 Common Stock
15,000
$ 0 245,000
I
See Footnote (1)
Option to Purchase Common Stock $ 15 10/29/1999   A4 15,000 (4)   10/29/2000 10/29/2009 Common Stock
15,000
$ 0 260,000
I
See Footnote (4)
Option to Purchase Common Stock $ 15 10/29/1999   A4 10,000 (1)   10/29/2000 10/29/2009 Common Stock
10,000
$ 0 270,000
I
See Footnote (1)
Option to Purchase Common Stock $ 15 10/29/1999   A4 10,000 (4)   10/29/2000 10/29/2009 Common Stock
10,000
$ 0 280,000
I
See Footnote (4)
Option to Purchase Common Stock $ 56.88 01/12/2000   A4 5,000 (4)   01/12/2001 01/12/2010 Common Stock
5,000
$ 0 285,000
I
See Footnote (4)
Option to Purchase Common Stock $ 44.5 05/24/2000   A4 10,000 (1)   05/24/2001 05/24/2010 Common Stock
10,000
$ 0 295,000
I
See Footnote (1)
Option to Purchase Common Stock $ 44.5 05/24/2000   A4 10,000 (4)   05/24/2001 05/24/2010 Common Stock
10,000
$ 0 305,000
I
See Footnote (4)
Option to Purchase Common Stock $ 24.53 05/16/2001   A4 10,000 (1)   05/16/2002 05/16/2011 Common Stock
10,000
$ 0 315,000
I
See Footnote (1)
Option to Purchase Common Stock $ 24.53 05/16/2001   A4 10,000 (4)   05/16/2002 05/16/2011 Common Stock
10,000
$ 0 325,000
I
See Footnote (4)
Option to Purchase Common Stock $ 24.53 05/16/2001   A4 5,000 (4)   05/16/2002 05/16/2011 Common Stock
5,000
$ 0 330,000
I
See Footnote (4)
Option to Purchase Common Stock $ 10.23 05/16/2002   A4 10,000 (1)   05/22/2003 05/16/2012 Common Stock
10,000
$ 0 340,000
I
See Footnote (1)
Option to Purchase Common Stock $ 5.02 05/22/2003   A4 10,000 (1)   05/20/2004 05/22/2013 Common Stock
10,000
$ 0 350,000
I
See Footnote (1)
Option to Purchase Common Stock $ 7.5 05/20/2004   A4 12,000 (1)   05/18/2005 05/20/2014 Common Stock
12,000
$ 0 362,000
I
See Footnote (1)
Option to Purchase Common Stock $ 6.22 06/01/2005   A4 12,000 (1)     (5) 06/01/2015 Common Stock
12,000
$ 0 374,000
I
See Footnote (1)
Option to Purchase Common Stock $ 5.76 11/07/2005   A4 15,000 (6)   11/07/2005 11/07/2015 Common Stock
15,000
$ 0 389,000
I
See Footnote (6)

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
DTE ENERGY CO
2000 2ND AVENUE
DETROIT, MI 48226-1279		     X    

Signatures

/s/Teresa M. Sebastian Assistant Corporate Secretary 02/14/2006
**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) Anthony F. Earley, Jr., a former director of Plug Power, Inc. and President and Chief Executive Officer of DTE Energy, has assigned to DTE Energy pursuant to the terms of his employment, all of his pecuniary interest in the stock options granted to him under Plug Power's 1999 Stock Option and Incentive Plan and the shares issued to him under Plug Power's Non-Employee Director Compensation Plan (including the power to direct the exercise of such options and the sale or transfer of such shares). Upon exercise of the options, Mr. Earley will assign the shares acquired to DTE Energy.
(2) The gift of stock did not involve payment of consideration by the recipient of the gift.
(3) The shares are held by DTE Energy Ventures, Inc., a wholly-owned subsidiary of DTE Energy Company.
(4) Larry G. Garberding, a director of Plug Power, Inc. and the retired Vice President and Chief Financial Officer of DTE Energy, has assigned to DTE Energy pursuant to the terms of his employment, all of his pecuniary interest in the stock options granted to him under Plug Power's 1999 Stock Option and Incentive Plan and the shares issued to him under Plug Power's Non-Employee Director Compensation Plan (including the power to direct the exercise of such options and the sale or transfer of such shares) while serving as an employee of DTE Energy. Upon exercise of the options, Mr. Garberding will assign the shares acquired to DTE Energy.
(5) Consists of an option to acquire common stock granted on June 1, 2005 with respect to 12,000 shares, with an exercise price equal to fair market value on the date of grant. The option fully vests on the date of Plug Power, Inc.'s annual meeting in year 2006.
(6) Robert J. Buckler, Jr., a director of Plug Power Inc. and Group President of DTE Energy, has assigned to DTE Energy pursuant to the terms of his employment, all of his pecuniary interest in the stock options granted to him under Plug Power's 1999 Stock Option and Incentive Plan and the shares issued to him under Plug Power's Non-Employee Director Compensation Plan (including the power to direct the exercise of such options and the sale or transfer of such shares). Upon exercise of the options, Mr. Buckler will assign the shares acquired to DTE Energy.

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