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 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 * LS Power Partners, L.P.   2. Issuer Name and Ticker or Trading Symbol DYNEGY INC. [DYN] 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) 1700 BROADWAY, 35TH FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 04/05/2010 (Street) NEW YORK, NY 10019 4. If Amendment, Date Original Filed(Month/Day/Year) 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 (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 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 Class A Common Stock 04/05/2010   S   5,135 D $ 1.2582 1,374,335 D   Class A Common Stock 04/05/2010   S   257,763 (1) D $ 1.2582 68,989,796 (2) I See Remarks Class A Common Stock 04/06/2010   S   7,635 D $ 1.2774 1,366,700 D   Class A Common Stock 04/06/2010   S   383,287 (3) D $ 1.2774 68,606,509 (4) I See Remarks Class A Common Stock 04/07/2010   S   4,765 D $ 1.2631 1,361,935 D   Class A Common Stock 04/07/2010   S   243,950 (5) D $ 1.2631 68,367,324 (6) I See Remarks

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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 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
LS Power Partners, L.P. 1700 BROADWAY 35TH FLOOR NEW YORK, NY 10019		X

Signatures

/s/ Darpan Kapadia, Managing Director		04/07/2010
**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)	Of these shares, LS Power Equity Partners, L.P. ("LSPEP") sold 158,120 shares, LS Power Equity Partners PIE I, L.P. ("PIE I") sold 95,880 shares and LSP Gen Investors, L.P. ("Gen Investors") sold 3,763 shares.
(2)	Of these shares, LSPEP directly holds 42,320,630 shares, PIE I directly holds 25,662,133 shares, and Gen Investors directly holds 1,007,033 shares.
(3)	Of these shares, LSPEP sold 235,121 shares, PIE I sold 142,571 shares and Gen Investors sold 5,595 shares.
(4)	Of these shares, LSPEP directly holds 42,085,509 shares, PIE I directly holds 25,519,562 shares, and Gen Investors directly holds 1,001,438 shares.
(5)	Of these shares, LSPEP sold 146,724 shares, PIE I sold 88,970 shares and Gen Investors sold 3,491 shares.
(6)	Of these shares, LSPEP directly holds 41,938,785 shares, PIE I directly holds 25,430,592 shares, and Gen Investors directly holds 997,947 shares.
Remarks: LS Power Partners, L.P. ("LSP Partners") is the general partner of  LS Power Equity Partners, L.P. ("LSPEP"), LS Power Equity Partners PIE I, L.P. ("PIE I") and LSP Gen Investors, L.P. ("Gen Investors").  As a result of its relationship with LSPEP, PIE I, and Gen Investors, LSP Partners may be deemed to have shared voting and investment power with respect to the shares beneficially owned by LSPEP, PIE I, and Gen Investors.  As such, LSP Partners may be deemed to have shared beneficial ownership of the shares of which LSPEP, PIE I, and Gen Investors are the owners.  LSP Partners, however, disclaims beneficial ownership of such shares except to the extent of its pecuniary interest therein.

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