Second Registration Rights Agreement Joinder April 2, 2015

Exhibit 4.24

Second Registration Rights Agreement Joinder

April 2, 2015

Each of the undersigned hereby agrees as Guarantor (as defined in the Registration Rights Agreement (as amended, supplemented or joined, the “Registration Rights Agreement”), dated as of October 27, 2014, among Dynegy Inc., a Delaware corporation (as successor in interest to each of Dynegy Finance I, Inc., a Delaware corporation, and Dynegy Finance II, Inc., a Delaware corporation), and the Guarantors party thereto and Xxxxxx Xxxxxxx & Co. LLC, Barclays Capital Inc., Credit Suisse Securities (USA) LLC, RBC Capital Markets, LLC and UBS Securities LLC, as representatives of the several Initial Purchasers listed on Schedule I thereto) to be bound by the terms and provisions attributable to a Guarantor of the Registration Rights Agreement and to assume and be bound to perform all obligations of a Guarantor thereunder.  By executing and delivering this Second Registration Rights Agreement Joinder, each of the undersigned hereby becomes a party to the Registration Rights Agreement as a Guarantor thereunder.

[SIGNATURE PAGES FOLLOW]

IN WITNESS WHEREOF, the undersigned has executed this counterpart as of the date first set forth above.

	Dynegy Energy Services (East), LLC, as a Guarantor
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Chief Executive Officer
	Dynegy Resource I, LLC
	Dynegy Commercial Asset Management, LLC
	Dynegy Conesville, LLC
	Dynegy Dicks Creek, LLC
	Dynegy Fayette II, LLC
	Dynegy Hanging Rock II, LLC
	Dynegy Xxxxxx, LLC
	Dynegy Xxx XX, LLC
	Dynegy Miami Fort, LLC
	Dynegy Stuart, LLC
	Dynegy Washington II, LLC
	Dynegy Xxxxxx, LLC
	Dynegy Coal Generation, LLC
	Dynegy Gas Generation, LLC
	Dynegy Generation Holdco, LLC, as Guarantors
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: President & Chief Executive Officer