Entergy Mississippi, Inc. 1M BD 66 (EMP) 10-Q 2011 Q2 Quarterly report

Exhibit 32(o)

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, John T. Herron, Chairman, President, and Chief Executive Officer of System Energy Resources, Inc. (the “Company”), certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)	The Quarterly Report on Form 10-Q of the Company for the quarter ended June 30, 2011 (the "Report") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2)	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of the dates and for the periods presented in the Report.

/s/ John T. Herron

John T. Herron

Chairman, President, and Chief Executive Officer

of System Energy Resources, Inc.

Date:           August 5, 2011