Huaneng Power International, Inc. Unit 4 of Yuhuan Power Plant Completed Trial Run

Huaneng Power International, Inc. Unit 4 of Yuhuan Power Plant Completed Trial Run

November 26, 2007

    BEIJING, Nov. 26 /Xinhua-PRNewswire-FirstCall/ --
Huaneng Power International, Inc. (the "Company")
(NYSE: HNP; HKEx: 902; SSE: 600011) announced that a 1,000MW
ultra-supercritical coal-fired generating unit (Unit 4) at
Huaneng Yuhuan Power Plant completed the 168-hour trial run
on November 24, 2007.  To date, the Company's total
generation capacity on an equity basis has increased from
30,747MW to 31,747MW.

    Huaneng Power International, Inc. develops, constructs,
operates and manages large-scale power plants in China
nationwide, with a total generation capacity of 31,747MW on
an equity basis and a total controlling generation capacity
of 36,024MW. The Company wholly owns seventeen operating
power plants, and has controlling interests in twelve
operating power companies and minority interests in five
operating power companies. Currently, it is one of the
largest listed power producers in China.

    For enquiries, please contact:

     Ms. Meng Jing / Ms. Zhao Lin					
     Huaneng Power International, Inc.				
     Tel:   [phone]
     Fax:   [phone]				
     Email: [e-mail]		

     Ms. Christy Lai / Ms. Patricia Tse	
     Rikes Communications Limited
     Tel: [phone]
     Fax: [phone]