Filed by Entergy Corporation Pursuant to Rule 425

Under the Securities Act of 1933

Subject Company: Entergy Corporation

Commission File No. 001-11299

Inside Entergy article

Mississippi Commission denies ITC transaction

Today the Mississippi Public Service Commission denied the joint application to separate and merge Entergy Mississippi, Inc.’s transmission business with a subsidiary of ITC Holdings Corp.

The commission’s decision was rendered in a 99-page order. Central District Commissioner and Chairman Lynn Posey was quoted in an MPSC news release saying, “We respect Entergy’s desire to improve its organizational effectiveness, but the commission was not persuaded the transfer of ownership would be in the best interest of Mississippi’s customers.”

“We are disappointed that the Mississippi commission took action today and found that the transaction is not in the public interest,” said Haley Fisackerly, president and CEO of Entergy Mississippi. “We will evaluate the Mississippi commission’s order and work with ITC to determine next steps.”

Additional Information and Where to Find It

ITC filed a registration statement on Form S-4 (Registration No. 333-184073) with the SEC registering the offer and sale of shares of ITC common stock to be issued to Entergy shareholders in connection with the proposed transactions. This registration statement was declared effective by the SEC on Feb. 25, 2013. ITC is also expected to file a post-effective amendment to the above registration statement. ITC shareholders are urged to read the prospectus included in the ITC registration statement (and the post-effective amendment to the ITC registration statement, when available) and any other relevant documents because they contain important information about TransCo and the proposed transactions. In addition, on July 24, 2013, Mid South TransCo LLC (“TransCo”) filed a registration statement on Form S-4/S-1 (Registration No. 333-190094) with the SEC registering the offer and sale of TransCo common units to be issued to Entergy shareholders in connection with the proposed transactions. This registration statement includes a prospectus of TransCo related to the proposed transactions. Entergy will file a tender offer statement on Schedule TO with the SEC related to the exchange of shares of Entergy common stock for the TransCo common units. Entergy shareholders are urged to read the prospectuses included in the ITC registration statement (and the post-effective amendment to the ITC registration statement, when available), the TransCo registration statement, the tender offer statement on Schedule TO (when available) and any other relevant documents because they contain important information about ITC, TransCo and the proposed transactions. The registration statements, prospectuses, tender offer statement and other documents relating to the proposed transactions (when they are available) can be obtained free of charge from the SEC’s website at www.sec.gov. The documents, when available, can also be obtained free of charge from Entergy upon written request to Entergy Corporation, Investor Relations, P.O. Box 61000, New Orleans, LA 70161 or by calling Entergy’s Investor Relations information line at 1-888-ENTERGY (368-3749), or from ITC upon written request to ITC Holdings Corp., Investor Relations, 27175 Energy Way, Novi, MI 48377 or by calling 248-946-3000.