BEIJING, May 8, 2012 /PRNewswire-Asia/ -- Huaneng Power International, Inc. (the "Company") (NYSE: HNP; HKEx: 902; SSE: 600011) announced that the Company had filed its 2011 Annual Report on Form 20-F (the "2011 Annual Report") with the United States Securities and Exchange Commission. According to Section 203.01 of the New York Stock Exchange (the "NYSE") Listed Company Manual, the NYSE no longer requires its listed companies to physically distribute an annual report to shareholders. The Company has posted the 2011 Annual Report on its website at www.hpi.com.cn. The 2011 Annual Report can also be accessed electronically at www.sec.gov. Upon request, the Company will deliver free of charge and within a reasonable time a hard copy of the 2011 Annual Report, including complete audited financial statements. To request a hard copy, please contact Mr. Zhou Biao by telephone at +86-10-6322-6594, or by e-mail at email@example.com; or by a written request addressed to Capital Market Department, Huaneng Power International, Huaneng Building, No.6 Fuxingmennei Street, Xicheng District, Beijing 100031, the PRC, Re: 2011 Annual Report on Form 20-F. The Company is one of China's largest listed power producers with controlled generation capacity of 60,375 MW and equity-based generation capacity of 55,350 MW. The power plants of the Company are located in 19 provinces, municipalities and autonomous regions in China. The Company also has a wholly-owned power company in Singapore. For enquiries, please contact: Huaneng Power International, Inc. Ms. MENG Jing / Ms. ZHAO Lin Tel: +86-10-6608-6765 / +86-10-6322-6596 Fax: +86-10-6641-2321 Email: firstname.lastname@example.org Wonderful Sky Financial Group LimitedMr. Hon Fung / Ms. Yolanda Wang / Mr. Tony Chen / Ms. Sharon LauTel: +852-2851-1038Fax: +852-2865-1638Email: email@example.com / firstname.lastname@example.org / email@example.com / firstname.lastname@example.org SOURCE Huaneng Power International, Inc.