Sec Form 4 Filing - Miskovic Maureen @ NRG ENERGY, INC. - 2007-06-01

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP 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 Miskovic Maureen 2. Issuer Name and Ticker or Trading Symbol NRG ENERGY, INC. [ NRG] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) NRG ENERGY, INC., 211 CARNEGIE CENTER 3. Date of Earliest Transaction (MM/DD/YY) 06/01/2007 (Street) PRINCETON, NJ08540 4. If Amendment, Date Original Filed (MM/DD/YY) 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 Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, par value .01 per share ( 1 ) 06/01/2007 A 3,602 ( 1 ) ( 2 ) A 15,870 ( 4 ) D

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Miskovic Maureen NRG ENERGY, INC. 211 CARNEGIE CENTER PRINCETON, NJ08540 X Signatures /s/Tanuja M. Dehne, under Power of Attorney 06/04/2007 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents Deferred Stock Units issued to Ms. Miskovic by NRG Energy, Inc. under NRG Energy, Inc.'s Long Term Incentive Plan. ( 2 )Ms. Miskovic elected to receive Deferred Stock Units in lieu of the cash portion of her compensation. 1,801 Deferred Stock Units of the 3,602 units represent the cash portion of Ms. Miskovic's compensation. ( 3 )Each Deferred Stock Unit is equivalent in value to one share of NRG Energy, Inc.'s Common Stock, par value $0.01. Ms. Miskovic will receive from NRG Energy, Inc. one such share of Common Stock for each Deferred Stock Unit she owns upon termination of her service on NRG Energy, Inc.'s Board of Directors. ( 4 )On May 2, 2007, NRG Energy, Inc. announced a 2-for-1 stock split, in the form of a stock dividend paid on May 31, 2007 to all holders of record of Common Stock on May 22, 2007, which resulted in Ms. Miskovic's ownership of 6,134 additional shares of Common Stock. The Company?s Common Stock began trading on a split-adjusted basis on June 1, 2007.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* 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).

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