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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1. Name and Address of Reporting Person *   Wilson Denise 2. Date of Event Requiring Statement (Month/Day/Year) 09/07/2006 3. Issuer Name and Ticker or Trading Symbol NRG ENERGY, INC. [NRG] (Last) (First) (Middle) 211 CARNEGIE CENTER 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chief Administrative Officer 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) PRINCETON, NJ 08540 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, par value .01 per share 9,062 (1) (2) (3) D Â

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
Non-Qualified Stock Options	03/02/2005(4)	03/02/2014(4)	Comon stock, par value .01 per share	16,000	$ 19.9	D	Â
Non-Qualified Stock Options	08/01/2006(5)	08/01/2011(6)	Common stock, par value .01 per share	7,000	$ 38.8	D	Â
Non-Qualified Stock Options	01/03/2007(7)	01/03/2012(6)	Common stock, par value .01 per share	11,000	$ 47.95	D	Â
Performance Units	08/01/2008	08/01/2008	Common stock, par value .01 per share	4,000	$ (8)	D	Â
Performance Units	01/03/2009	01/03/2009	Common stock, par value .01 per share	5,000	$ (9)	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Wilson Denise 211 CARNEGIE CENTER PRINCETON, NJ 08540	Â	Â	  Chief Administrative Officer	Â

Signatures

/s/Denise Wilson		09/12/2006
**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)	Represents the following securities issued to Ms. Wilson by NRG Energy, Inc. under NRG's Long Term Incentive Plan: (i) 4,400 Restricted Stock Units ("RSUs") issued on March 2, 2004; (ii) 1,000 RSUs issued on August 1, 2005; (iii) 1,300 RSUs issued on January 3, 2006; and (iv) 2,362 Deferred Stock Units issued on March 14, 2005.
(2)	Each RSU is equivalent in value to one share of NRG's Common Stock, par value $0.01. Ms. Wilson will receive from NRG one such share of Common Stock for each RSU as follows: (i) 4,400 shares on March 2, 2007; (ii) 1,000 shares on August 1, 2008; (iii) 1,300 shares on January 3, 2009.
(3)	On March 14, 2005, Ms. Wilson was issued 2,362 Deferred Stock Units ("DSU's") by NRG Energy, Inc. under NRG Energy, Inc.'s Long Term Incentive Plan. Each DSU is equivalent in value to one share of NRG's Common Stock, par value $0.01. Ms. Wilson will receive from NRG Energy, Inc. one such share of Common Stock for each DSU she owns six months from the date of her termination with NRG Energy, Inc.
(4)	Pursuant to the Grant Agreement by and between NRG Energy, Inc. and Ms. Wilson, the Stock Options will vest and become exercisable as follows: 33 1/3% on March 2, 2005, 33 1/3% on March 2, 2006 and 33 1/3% on March 2, 2007. These stock options expire ten years from the date of the grant.
(5)	Pursuant to the Grant Agreement by and between NRG Energy, Inc. and Ms. Wilson, the Stock Options will vest and become exercisable as follows: 33 1/3% on August 1, 2006, 33 1/3% on August 1, 2007 and 33 1/3% on August 1, 2008.
(6)	Stock options expire six years from the date of the grant.
(7)	Pursuant to the Grant Agreement by and between NRG Energy, Inc. and Ms. Wilson, the Stock Options will vest and become exercisable as follows: 33 1/3% on January 3, 2007, 33 1/3% on January 3, 2008 and 33 1/3% on January 3, 2009.
(8)	Ms. Wilson was issued 2,000 Performance Units by NRG Energy, Inc. under NRG Energy, Inc.'s Long Term Incentive Plan on August 1, 2005. Each Performance Unit will be paid out on August 1, 2008 if the average closing price of NRG Energy, Inc.'s Common Stock for the ten trading days prior to August 1, 2008 (the "Measurement Price") is equal to or greater than $54.50 (the "Target Price"). The payout for each Performance Unit will be equal to: (i) one share of Common Stock, if the Measurement Price equals the Target Price; (ii) a prorated amount in between one and two shares of Common Stock, if the Measurement Price is greater than the Target Price but less than $63.75 (the "Maximum Price"); and (iii) two shares of Common Stock, if the Measurement Price is equal to or greater than the Maximum Price.
(9)	Ms. Wilson was issued 2,500 Performance Units by NRG Energy, Inc. under NRG Energy, Inc.'s Long Term Incentive Plan on January 3, 2006. Each Performance Unit will be paid out on January 3, 2009 if the average closing price of NRG Energy, Inc.'s Common Stock for the ten trading days prior to January 3, 2009 (the "Measurement Price") is equal to or greater than $67.37 (the "Target Price"). The payout for each Performance Unit will be equal to: (i) one share of Common Stock, if the Measurement Price equals the Target Price; (ii) a prorated amount in between one and two shares of Common Stock, if the Measurement Price is greater than the Target Price but less than $79.49 (the "Maximum Price"); and (iii) two shares of Common Stock, if the Measurement Price is equal to or greater than the Maximum Price.

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