HNP Huaneng Power International Inc

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

RESOLUTIONS PASSED AT 2021 ANNUAL GENERAL MEETING

Reference is made to the notice of 2021 annual general meeting (the “AGM” or the “Meeting”) of Huaneng Power International, Inc. (the “Company”) dated 13 May 2022 (the “Notice”). Unless otherwise stated, capitalised terms used herein shall have the same meanings as those used in the Notice.

The Board is pleased to announce that the AGM was held at the Conference Room A102, Huaneng Building, 6 Fuxingmennei Street, Xicheng District, Beijing, the PRC at 9:00 a.m. on 28 June 2022 and the resolutions set out in the Notice were duly passed by poll by the attending Shareholders and authorised proxies carrying voting rights.

The convening of the Meeting was in compliance with the Company Law of the PRC, the Rules Governing the Listing of the Securities on The Stock Exchange of Hong Kong Limited (the “Hong Kong Listing Rules”) and relevant provisions of the Articles of Association of the Company. The Meeting was convened by the board of directors of the Company. Mr. Zhao Keyu (Chairman) presided over the Meeting as the chairman of the Meeting.

8 out of 15 directors of the Company attended the Meeting. Mi Dabin (Director), Cheng Heng (Director), Li Haifeng (Director), Lin Chong (Director), Liu Jizhen (independent non-executive Director), Xu Haifeng (independent non-executive Director) and Xia Qing (independent non- executive Director) were unable to attend the Meeting due to other work reasons; 2 out of 6 of the Supervisors of the Company attended the Meeting; Li Shuqing (Chairman of the Supervisory Committee), Mu Xuan (Vice Chairman of the Supervisory Committee), Gu Jianguo (Supervisor) and Xia Aidong (Supervisor) were unable to attend the Meeting due to other work reasons. The Company Secretary Huang Chaoquan and other relevant senior management of the Company attended the Meeting.

ATTENDANCE AT THE AGM

As at the record date (i.e. 28 June 2022), there were totally 15,698,093,359 shares of the Company entitled to attend the AGM to vote for or against the resolutions tabled thereat. Details of the shareholders and their proxies who attended the AGM which are set out below:

According to the Hong Kong Listing Rules, no shareholder was required to abstain from voting in connection with the proposals considered at the Meeting. The Company was not aware of any parties indicating their intention to vote against any of the resolutions proposed at the Meeting. None of our shareholders was entitled to attend and abstain from voting in favour as set out in Rule 13.40 of the Hong Kong Listing Rules.

In accordance with the relevant provisions of the Company Law and the Articles of Association of the Company, resolutions numbered 1 to 5 (inclusive) and resolutions numbered 9 and 10 are ordinary resolutions and were passed by more than 50% of the total number of shares carrying voting rights held by those who attended the AGM in person or by proxies.

In accordance with the relevant provisions of the Company Law and the Articles of Association of the Company, resolutions numbered 6 to 8 (inclusive) are special resolutions and were passed by two- thirds or more of the total number of shares carrying voting rights held by those who attended the AGM in person or by proxies.

SCRUTINEER

Pursuant to the Hong Kong Listing Rules, the H Share Registrar of the Company (Hong Kong Registrars Limited) was appointed as the scrutineer at the AGM for the purpose of vote-takings.

WITNESS OF LAWYERS

The AGM was attended and witnessed by Mr. Bian Hao and Ms. Shi Jinning, lawyers from Haiwen & Partners, who had issued the legal opinion. The witnessing lawyers were of the opinion that: the convening and holding procedures of the AGM of the Company, the eligibility of the persons attending the AGM and the voting procedures for the AGM were in compliance with the stipulations of the relevant laws and the Articles of Association, and that the Meeting was lawful and valid.

By Order of the Board

Huaneng Power International, Inc.

Huang Chaoquan

Company Secretary

As at the date of this announcement, the directors of the Company are: