HNP [HUANENG POWER INTERNATIONAL] CORRESP: Huaneng Power International, Inc. Huaneng Building No.6 Fuxingmennei
[Huaneng Power International, Inc. Huaneng Building No.6 Fuxingmennei Street Xicheng District, Beijing 100031 PRC Via EDGAR and Facsimile September 26, 2012 Jennifer Thompson Lisa Sellars 100 F Street, NE Facsimile Number: +1 (202) 772-9202 Re: Huaneng Power International, Inc. Form 20-F for the Fiscal Year Ended December 31, 2011 Filed April 19, 2012 File No. 001-13314 Dear Ms. Thompson and]