Exhibit 32.1A1

CERTIFICATION PURSUANT TO

18 U.S.C., CHAPTER 63, SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

November 9, 2011

U. S. Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Ladies and Gentlemen:

The certification set forth below is being submitted to the Securities and Exchange Commission solely for the purpose of complying with Section 1350 of Chapter 63 of Title 18 of the United States Code. This certification is not to be deemed to be filed pursuant to the Securities Exchange Act of 1934, as amended, and does not constitute a part of the Quarterly Report on Form 10-Q for the period ended September 30, 2011 (the “Report”) accompanying this letter and is not to be incorporated by reference into any filing, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

I, Edward R. Muller, President and Chief Executive Officer of GenOn Americas Generation, LLC, certify that, to the best of my knowledge:

1. the Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

2. the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of GenOn Americas Generation, LLC.

/s/ EDWARD R. MULLER
Name:	Edward R. Muller
	President and Chief Executive Officer

A signed original of this written statement required by Section 906 has been provided to GenOn Americas Generation, LLC and will be retained by GenOn Americas Generation, LLC and furnished to the Securities and Exchange Commission or its staff upon request.