Document:

Amendment to Trust Agreement - Dynegy Inc. 401(k) Savings Plan (April 2007)

 Exhibit 10.53 
 AMENDMENT TO TRUST AGREEMENT 
 THIS AMENDMENT to the Trust Agreement dated January 1,
2002 (“Agreement”) is entered into effective as provided herein below, between DYNEGY INC., an Illinois corporation (“Dynegy Illinois”) and VANGUARD FIDUCIARY TRUST COMPANY, a trust company incorporated under Chapter 10 of the
Pennsylvania Banking Code (the “Trustee”); 
 WITNESSETH 
 WHEREAS, Dynegy Illinois has adopted and is maintaining the Dynegy Inc. 401(k) Savings Plan (the “Plan”); 
 WHEREAS, Dynegy Illinois has entered into that certain Plan of Merger, Contribution and Sale Agreement by and among Dynegy Illinois, LSP GEN Investors,
L.P., LS Power Partners, L.P., LS Power Equity Partners PIE I, L.P., LS Power Equity Partners, L.P., LS Power Associates, L.P., Falcon Merger Sub Co., and Dynegy Acquisition, Inc., executed September 14, 2006 (the “Merger Agreement”);

 WHEREAS, pursuant to the transactions contemplated in the Merger Agreement, Dynegy Illinois will become a wholly-owned subsidiary of a
newly formed Delaware corporation, named “Dynegy Inc.”, and Dynegy Illinois will thereafter be renamed “Dynegy Illinois Inc.”, as of the Effective Time specified in the Merger Agreement (the “Effective Time”);

 WHEREAS, effective immediately after the Effective Time, Dynegy Illinois will withdraw as the sponsor of the Plan and Dynegy Inc., a
Delaware corporation, will assume sponsorship of the Plan from Dynegy Illinois and will become the “Company” for purposes of the Agreement; and 
 WHEREAS, pursuant to Section 11.1 of the Agreement, Dynegy Illinois may amend the Agreement by delivery of an instrument in writing to the Trustee; 
 NOW, THEREFORE, BE IT RESOLVED that the Agreement shall be, and hereby is amended to provide that as follows, effective immediately after the Effective
Time: 
 1. The first paragraph of the Agreement shall be deleted and the following four paragraphs shall be substituted therefor: 

“THIS AGREEMENT OF TRUST (the ‘Agreement’) effective as of the
1st day of January, 2002, by and between DYNEGY INC., an Illinois corporation (‘Dynegy Illinois’) and
VANGUARD FIDUCIARY TRUST COMPANY, a trust company incorporated under Chapter 10 of the Pennsylvania Banking Code (the ‘Trustee’). 

 Dynegy Illinois has entered into that certain Plan of Merger, Contribution and Sale
Agreement by and among Dynegy Illinois, LSP GEN Investors, L.P., LS Power Partners, L.P., LS Power Equity Partners PIE I, L.P., LS Power Equity Partners, L.P., LS Power Associates, L.P., Falcon Merger Sub Co., and Dynegy Acquisition, Inc., executed
September 14, 2006 (the ‘Merger Agreement’). 
 Pursuant to the transactions contemplated in the Merger
Agreement, Dynegy Illinois will become a wholly-owned subsidiary of a newly formed Delaware corporation, named ‘Dynegy Inc.’, and the Dynegy Illinois will thereafter be renamed ‘Dynegy Illinois Inc.’, immediately as of the
Effective Time specified in the Merger Agreement (the ‘Effective Time’). 
 Effective immediately after the
Effective Time, Dynegy Illinois will withdraw as the sponsor of the Plan (defined below) and Dynegy Inc., a Delaware corporation, will assume sponsorship of the Plan from Dynegy Illinois and all references to the ‘Company’ in the Agreement
shall thereafter refer to Dynegy Inc., a Delaware corporation.” 
 2. All references to “Company Stock” in the Agreement shall
refer to shares of common stock of Dynegy Inc., a Delaware corporation. 
 3. All references to the “Dynegy Stock Fund” in the
Agreement shall refer to the investment fund established and maintained to invest in the common stock of Dynegy Inc., a Delaware corporation. 
 4. Except as modified herein, the Agreement shall remain in full force and effect. 
 This Amendment may be executed in two or more
counterparts, which together constitute one instrument. 
 IN WITNESS WHEREOF, the parties hereto have executed this Amendment to the
Agreement on the dates indicated below, to be effective immediately after the Effective Time. 
  

							
	 Attest:
	 		 	Dynegy Inc., an Illinois corporation
				
		 		 	By:	 	 /s/ J. Kevin Blodgett

	 /s/ Irma Longoria
	 		 	Title:	 	 Executive Vice President, Administration

		 		 	Date:	 	 April 2, 2007

									
	 Attest:
	 		 	Vanguard Fiduciary Trust Company	 	
					
		 		 	By:	 	  
	 	
	  
	 		 	Title:	 	  
	 	
		 		 	Date:	 	  
	 	
				
		 		 	Approved and accepted:	 	
				
	 Attest:
	 		 	Dynegy Inc., a Delaware corporation	 	
					
		 		 	By:	 	 /s/ J. Kevin Blodgett
	 	
	 /s/ Irma Longoria
	 		 	Title:	 	 Executive Vice President, Administration
	 	
		 		 	Date:	 	 April 2, 2007Amendment to Dynegy Inc. Defererred Compensation Plan Trust Agreement

 Exhibit 10.54 
 AMENDMENT TO DYNEGY INC. 
 DEFERRED COMPENSATION PLAN TRUST AGREEMENT 

THIS AMENDMENT to the Dynegy Inc. Deferred Compensation Plan Trust Agreement (the “Agreement”) is entered into effective as provided herein
below, between DYNEGY ILLINOIS INC. (formerly known as Dynegy Inc.), an Illinois corporation (“Dynegy Illinois”) and VANGUARD FIDUCIARY TRUST COMPANY, a trust company incorporated under Chapter 10 of the Pennsylvania Banking Code (the
“Trustee”); 
 WITNESSETH 
 WHEREAS, Dynegy Illinois has heretofore adopted the Dynegy Inc. Deferred Compensation Plan (the “Plan”); 
 WHEREAS, Dynegy Illinois has entered into that certain Plan of Merger, Contribution and Sale Agreement by and among Dynegy Illinois, LSP GEN Investors, L.P., LS Power Partners, L.P., LS Power Equity Partners PIE I, L.P., LS Power Equity
Partners, L.P., LS Power Associates, L.P., Falcon Merger Sub Co., and Dynegy Acquisition, Inc., executed September 14, 2006 (the “Merger Agreement”); 
 WHEREAS, pursuant to the transactions contemplated in the Merger Agreement, Dynegy Illinois will become a wholly-owned subsidiary of a newly formed Delaware corporation, named “Dynegy Inc.” (the
“Company”), and Dynegy Illinois will thereafter be renamed “Dynegy Illinois Inc.”, as of the Effective Time specified in the Merger Agreement (the “Effective Time”); 
 WHEREAS, in connection with the completion of such transactions, the Board of Directors of Dynegy Illinois and the Company have approved the adoption,
assumption and sponsorship of the Plan by the Company; and 
 WHEREAS, effective immediately after the Effective Time, Dynegy Illinois will
withdraw as the sponsor of the Plan and the Company will assume sponsorship of the Plan from Dynegy Illinois and will become the “‘Company” for purposes of the Agreement; 
 NOW, THEREFORE, BE IT RESOLVED that the Agreement is hereby amended as follows, effective immediately after the Effective Time: 
 1. The first and second paragraphs of the Agreement shall be deleted and the following five paragraphs shall be substituted therefor: 
 “THIS AGREEMENT AND DECLARATION OF TRUST (the ‘Agreement’) effective
as of the 1st day of January, 2002, by and between DYNEGY ILLINOIS INC. (formerly known as Dynegy Inc.), an Illinois
corporation (‘Dynegy Illinois’) and VANGUARD FIDUCIARY TRUST COMPANY, a trust company incorporated under Chapter 10 of the Pennsylvania Banking Code (the ‘Trustee’). 
  

 1 

 WHEREAS, Dynegy Illinois has heretofore established the DYNEGY INC DEFERRED COMPENSATION
PLAN (hereinafter referred to as the ‘Plan’) for the benefit of certain individuals who are eligible for benefits under the terms of the Plan (such individuals being referred to herein as the ‘Members’), which Plan provides for
the payment of certain deferred compensation benefits (the ‘Benefits’) to the Members and, in the event of the death of a Member, the beneficiaries of the respective Member entitled to any payments under the terms of the Plan
(‘Beneficiaries’); and 
 WHEREAS, Dynegy Illinois has entered into that certain Plan of Merger, Contribution and
Sale Agreement by and among Dynegy Illinois, LSP GEN Investors, L.P., LS Power Partners, L.P., LS Power Equity Partners PIE I, L.P., LS Power Equity Partners, L.P., LS Power Associates, L.P., Falcon Merger Sub Co., and Dynegy Acquisition, Inc.,
executed September 14, 2006 (the ‘Merger Agreement’); and 
 WHEREAS, pursuant to the transactions contemplated
in the Merger Agreement, Dynegy Illinois will become a wholly-owned subsidiary of a newly formed Delaware corporation, named ‘Dynegy Inc.’ (the ‘Company’), and the Dynegy Illinois will thereafter be renamed ‘Dynegy Illinois
Inc.’, immediately as of the Effective Time specified in the Merger Agreement (the ‘Effective Time’); and 
 WHEREAS, effective immediately after the Effective Time, Dynegy Illinois will withdraw as the sponsor of the Plan (defined below) and the Company will assume sponsorship of the Plan from Dynegy Illinois.” 
 2. Except as modified herein, the Agreement shall remain in full force and effect. 
 This Amendment may be executed in two or more counterparts, which together constitute one instrument. 
 [Remainder of page intentionally left blank] 
  

 2 

 IN WITNESS WHEREOF, the parties hereto have executed this Amendment to the Master Trust on the dates
indicated below, to be effective immediately after the Effective Time. 
  

									
	Attest:	 		 	 DYNEGY ILLINOIS INC.
 (formerly known
as Dynegy Inc.)

				
	/s/ Irma Longoria	 		 	By:	 	/s/ J. Kevin Blodgett
					
		 		 		 	Title:	 	Executive Vice President, Administration
					
		 		 		 	Date:	 	April 2, 2007

  

									
	Attest:	 		 	Vanguard Fiduciary Trust Company
				
	  	 		 	By:	 	  
					
		 		 		 	Title:	 	  
					
		 		 		 	Date:	 	  

  

									
		 		 	Approved and accepted:
			
	Attest:	 		 	Dynegy Inc., a Delaware corporation
				
	/s/ Irma Longoria	 		 	By:	 	/s/ J. Kevin Blodgett
					
		 		 		 	Title:	 	Executive Vice President, Administration
					
		 		 		 	Date:	 	April 2, 2007

  

 3Amendment to Master Trust Agreement

 Exhibit 10.55 
 AMENDMENT TO MASTER TRUST AGREEMENT 
 THIS AMENDMENT to the Master Trust Agreement
(“Master Trust”) is entered into effective as provided herein below, between DYNEGY INC., an Illinois corporation (“Dynegy Illinois”) and VANGUARD FIDUCIARY TRUST COMPANY, a trust company incorporated under Chapter 10 of the
Pennsylvania Banking Code (the “Master Trustee”); 
 WITNESSETH 
 WHEREAS, Dynegy Illinois and certain subsidiaries and affiliated entities have heretofore established the Dynegy Inc. 401(k) Savings Plan, the Dynegy
Midwest Generation, Inc. 401(k) Savings Plan for Employees Covered Under a Collective Bargaining Agreement, the Dynegy Midwest Generation, Inc. 401(k) Savings Plan, the Dynegy Northeast Generation, Inc. Savings Incentive Plan and the Extant, Inc.
401(k) Plan (each such plan to referred to individually as “Plan” and collectively as “Participating Plans”); 
 WHEREAS,
Dynegy Illinois has entered into that certain Plan of Merger, Contribution and Sale Agreement by and among Dynegy Illinois, LSP GEN Investors, L.P., LS Power Partners, L.P., LS Power Equity Partners PIE I, L.P., LS Power Equity Partners, L.P., LS
Power Associates, L.P., Falcon Merger Sub Co., and Dynegy Acquisition, Inc., executed September 14, 2006 (the “Merger Agreement”); 
 WHEREAS, pursuant to the transactions contemplated in the Merger Agreement, Dynegy Illinois will become a wholly-owned subsidiary of a newly formed Delaware corporation, named “Dynegy Inc.”, and Dynegy Illinois will thereafter be
renamed “Dynegy Illinois Inc.”, as of the Effective Time specified in the Merger Agreement (the “Effective Time”); 
 WHEREAS, effective immediately after the Effective Time, Dynegy Illinois will withdraw as the sponsor of the Participating Plans and Dynegy Inc., a Delaware corporation, will assume sponsorship of the Participating Plans from Dynegy
Illinois and will become the “Employer” for purposes of the Master Trust; and 
 WHEREAS, pursuant to Article X of the Master
Trust, Dynegy Illinois may amend the Master Trust by delivery of an instrument in writing to the Master Trustee; 
 NOW, THEREFORE, BE IT
RESOLVED that the Master Trust shall be, and hereby is amended to provide that as follows, effective immediately after the Effective Time: 
 1. The first paragraph of the Master Trust shall be deleted and the following four paragraphs shall be substituted therefor: 

 “THIS AGREEMENT OF TRUST (the
‘Agreement’) effective as of the 1st day of January, 2002, by and between DYNEGY INC., an Illinois
corporation (‘Dynegy Illinois’) and VANGUARD FIDUCIARY TRUST COMPANY, a trust company incorporated under Chapter 10 of the Pennsylvania Banking Code (the ‘Master Trustee’). 
 Dynegy Illinois has entered into that certain Plan of Merger, Contribution and Sale Agreement by and among Dynegy Illinois, LSP GEN
Investors, L.P., LS Power Partners, L.P., LS Power Equity Partners PIE I, L.P., LS Power Equity Partners, L.P., LS Power Associates, L.P., Falcon Merger Sub Co., and Dynegy Acquisition, Inc., executed September 14, 2006 (the ‘Merger
Agreement’). 
 Pursuant to the transactions contemplated in the Merger Agreement, Dynegy Illinois will become a
wholly-owned subsidiary of a newly formed Delaware corporation, named ‘Dynegy Inc.’, and Dynegy Illinois will thereafter be renamed ‘Dynegy Illinois Inc.’, as of the Effective Time specified in the Merger Agreement (the
‘Effective Time’). 
 Effective immediately after the Effective Time, Dynegy Illinois will withdraw as the sponsor
of the Participating Plans (defined below) and Dynegy Inc., a Delaware corporation, will assume sponsorship of the Participating Plans from Dynegy Illinois and all references to the ‘Employer’ in the Master Trust shall thereafter refer to
Dynegy Inc., a Delaware corporation.” 
 2. All references to “Company Stock” in the Master Trust shall refer to shares of
common stock of Dynegy Inc., a Delaware corporation. 
 3. All references to the “Dynegy Stock Fund” in the Master Trust shall
refer to the investment fund established and maintained to invest in common stock of Dynegy Inc., a Delaware corporation. 
 4. Except as
modified herein, the Master Trust shall remain in full force and effect. 
 This Amendment may be executed in two or more counterparts, which
together constitute one instrument. 

 IN WITNESS WHEREOF, the parties hereto have executed this Amendment to the Master Trust on the dates
indicated below, to be effective immediately after the Effective Time. 
  

									
	Attest:	 		 	Dynegy Inc., an Illinois corporation
					
		 		 		 	By:	 	 /s/ J. Kevin Blodgett

	 /s/ Irma Longoria
	 		 		 	
		 		 		 	Title:	 	Executive Vice President,
		 		 		 		 	Administration
					
		 		 		 	Date:	 	April 2, 2007
			
	Attest:	 		 	Vanguard Fiduciary Trust Company
					
		 		 		 	By:	 	  

		 		 		 	Title:	 	  

					
		 		 		 	Date:	 	  

				
		 		 		 	Approved and accepted:
			
	Attest:	 		 	Dynegy Inc., a Delaware corporation
					
		 		 		 	By:	 	 /s/ J. Kevin Blodgett

	 /s/ Irma Longoria
	 		 		 	
		 		 		 	Title:	 	Executive Vice President,
		 		 		 		 	Administration
					
		 		 		 	Date:	 	April 2, 2007

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