[This Form 6-K consists of: THIS CIRCULAR IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION If you are in any doubt If you have sold or transferred CONTINUING CONNECTED TRANSACTIONS Independent Financial Adviser to the Independent Board Committee and the Independent Shareholders Guotai Junan Capital Limited A letter from the board of Directors of Huaneng Power International, Inc. is set out]

[This Form 6-K consists of: RESOLUTION PASSED AT 2014 THIRD EXTRAORDINARY GENERAL MEETING This announcement sets out the resolution passed at the EGM convened on 28 November 2014. Reference is made to the notice of meeting of 2014 third extraordinary general meeting (the “EGM” or the “Meeting”) of Huaneng Power International, Inc. (the “Company”) dated 14 October 2014.]

[This Form 6-K consists of: (Stock Code: 902) NOTICE OF 2015 FIRST EXTRAORDINARY GENERAL MEETING NOTICE IS HEREBY GIVEN]

[This Form 6-K consists of: THIS CIRCULAR IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION If you are in any doubt If you have sold or transferred (Stock Code: 902) DISCLOSEABLE AND CONNECTED TRANSACTIONS Financial Adviser to the Company Independent Financial Adviser to the Independent Board Committee and the Independent Shareholders Guotai Junan Capital Limited A letter from the board of]

[This Form 6-K consists of: (Stock Code: 902) ANNOUNCEMENT COMPLETION OF THE PLACING OF NEW H SHARES Joint Global Coordinators, Bookrunners and Joint Placing Agents]

[This Form 6-K consists of: (Stock Code: 902) ISSUE OF SUPER SHORT-TERM DEBENTURES Listing Rules Company As resolved at the 2012 annual general meeting of Huaneng Power International, Inc. (the “ Debentures The Company has recently completed the issue of the third tranche of the Company’s super short-term debentures for 2014 (the “ Industrial and Commercial Bank of China Limited]