[This Form 6-K consists of: Announcement 1 ’ (a Sino-foreign joint stock limited company incorporated in the People (Stock Code: 902) 2014 Interim Results Announcement Consolidated operating revenue: RMB64.606 billion Profit attributable to equity holders of the Company: RMB6.808 billion Earnings per share: RMB0.48 INTERIM RESULTS The Board of Directors (the “Board”) of Huaneng Power International, Inc. (the “Company”) announces]

[This Form 6-K consists of: (a Sino-foreign joint stock limited company incorporated in the People’s Republic of China) (Stock Code: 902) DATE OF MEETING OF THE BOARD OF DIRECTORS The board of directors (the “Board”) of Huaneng Power International, Inc. (the “Company”) announced that a meeting of the Board of the Company will be convened on 29 July 2014, for]

[This Form 6-K consists of: POWER GENERATION WITHIN CHINA INCREASES BY 1.51% FOR THE FIRST HALF YEAR OF 2014 announce Rule Listing This Huaneng Power International, Inc. (the “Company”) announces its power generation for the first half year of 2014. According to the Company’s preliminary statistics, as of 30 June 2014, the Company’s total power generation by its power plants]

[This Form 6-K consists of: ISSUE OF MEDIUM TERM NOTES As resolved at the 2012 annual general meeting of Huaneng Power International, Inc. (the “Company”) held on 19 June 2013, the Company has been given a mandate to issue medium and long term debt financing instruments with a principal amount of up to RMB10 billion or equivalent in or outside]

[This Form 6-K consists of: ANNOUNCEMENT IN RELATION TO THE PERFECTION OF UNDERTAKING FOR AVOIDANCE OF BUSINESS COMPETITION PROVIDED BY HUANENG GROUP]