[This Form 6-K consists of: by An announcement regarding issue of super short-term debentures ISSUE OF SUPER SHORT-TERM DEBENTURES “ ” “ ” As resolved at the 2010 Annual General Meeting of Huaneng Power International, Inc. (the “ ” The Company has completed the issue of the second tranche of the Company’s super short-term debentures for 2012 on 11 July]

[This Form 6-K consists of: An announcement regarding approval obtained for gas-fired T Z , made by on July 4, 2012. co-generation projects in APPROVAL OBTAINED FOR GAS-FIRED CO-GENERATION PROJECTS IN TONGXIANG, ZHEJIANG “ ” “ ” Huaneng Power International Inc. (the The Project will build two sets of 200MW class combined cycle gas turbine cogeneration units with an estimated]

[This Form 6-K consists of: 1. An announcement regarding resolutions passed at 2011 annual general meeting 2. 3. Each 13 RESOLUTIONS PASSED AT 2011 ANNUAL GENERAL MEETING This announcement sets out the resolutions passed at the AGM convened on 12 June 2012.]

[This Form 6-K consists of: ISSUE OF SUPER SHORT-TERM DEBENTURES As resolved at the 2010 Annual General Meeting of Huaneng Power International, Inc. (the "Company"), the Company may apply to the National Association of Financial Market Institutional Investors for the quota to issue super short-term debentures with a principal amount of not exceeding RMB20 billion (to be issued with such]

[This Form 6-K consists of: RESIGNATION OF DIRECTOR Due to change of work requirement, Ms. Huang Mingyuan, a Non-executive Director of Huaneng Power International, Inc. (the "Company") has, in accordance with the relevant provision of the articles of association of the Company, tendered her resignation report in writing to the board of directors of the Company on 18 May 2012]