OREANDA-NEWS. February 20, 2014. This announcement is made by Huaneng Power International, Inc. (the “Company”) pursuant to Rule 13.09 of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited and the Inside Information Provisions under Part XIVA of the Securities and Futures Ordinance (Chapter 571 of the Laws of Hong Kong).

The Company recently received the Notification from Beijing Municipal Development and Reform Commission Regarding Adjustment of the Temporary Settlement On-Grid Tariffs of Beijing Municipal Gas Fired Power Generation Enterprises (Jing Fa Gai [2014] No.

117) and the Notification from Shanghai Municipal Pricing Bureau Regarding Resolving the Tariffs Conflict of Shanghai Municipal (Hu Jia Guan [2014] No. 3). According to the aforesaid tariffs adjustment documents, the on-grid tariffs of the Company’s domestic gas fired power plants will be adjusted as set out below.

The temporary settlement on-grid tariffs of Beijing Co-generation will be adjusted to RMB 650/MWh. The on-grid tariffs of Shanghai Combined-cycle will be divided into two parts, i.e. generation tariffs and capacity tariffs. Pursuant to such adjustment, the generation tariffs will increase to RMB 534/MWh while the subsidy in the form of capacity tariffs will remain unchanged. Based on the installed generation capacity of Shanghai Combined-cycle, the subsidy is RMB45.83/KW per month.