SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported)

June 15, 2015 (April 1, 2015)

DYNEGY INC.

(Exact name of registrant as specified in its charter)

(713) 507-6400

(Registrant’s telephone number, including area code)

N.A.

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o            Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o            Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o            Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o            Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 2.01                                           Completion of Acquisition or Disposition of Assets.

As previously disclosed, on April 1, 2015, Dynegy Inc. (the “Company”), through its wholly-owned subsidiary Dynegy Resources II, LLC (the “EquiPower Purchaser”), completed its acquisition (the “EquiPower Acquisition”) of 100% of the equity interests in EquiPower Resources Corp. (“EquiPower”). Simultaneously on April 1, 2015, the Company, through its wholly-owned subsidiary Dynegy Resources III, LLC (the “Brayton Purchaser”), completed its acquisition (the “Brayton Acquisition” and, together with the EquiPower Acquisition, the “ECP Acquisitions”) of 100% of the equity interests in Brayton Point Holdings, LLC (“Brayton”). On April 7, 2015, the Company filed a Current Report on Form 8-K (the “Original Report”) to report the completion of the ECP Acquisitions.

This amendment to the Original Report is being filed to provide the financial statements and pro forma financial information required by Items 9.01(a) and 9.01(b), respectively, of Form 8-K. This amendment makes no other amendments to the Original Report.

Item 9.01                                           Financial Statements and Exhibits.

(a)                                 Financial Statements of Business Acquired

Attached hereto as exhibit 99.1 and incorporated by reference herein are the combined audited financial statements of EquiPower and Brayton as required by this item.

(b)                                 Pro Forma Financial Information

Attached hereto as exhibit 99.2 and incorporated by reference herein is the unaudited condensed combined financial information reflecting the ECP Acquisition as required by this item.

(d)                                 Exhibits:

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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EXHIBIT INDEX

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