Huaneng Power International : OVERSEAS REGULATORY ANNOUNCEMENT ISSUE OF MID-TERM NOTES

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.

(Stock Code: 902)

OVERSEAS REGULATORY ANNOUNCEMENT

ISSUE OF MID-TERM NOTES

This announcement is made pursuant to Rule 13.10B of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited (the "Listing Rules").

As resolved at the 2018 annual general meeting of Huaneng Power International, Inc. (the "Company") held on 12 June 2019, the Company has been given a mandate to issue domestic and/or overseas debt financing instruments after relevant regulatory department approval (including but not limited to domestic debt financing instruments like corporate bonds, enterprise bonds, mid-term notes in the interbank bond markets in the domestic market, and overseas debt financing instruments like offshore RMB-denominated bonds, overseas USD denominated bonds and bonds denominated in other foreign currencies in the overseas market) (in either one or multiple tranches on rolling basis) with a principal amount of up to RMB50 billion or equivalent within or outside the People's Republic of China within the period from approval obtained at 2018 annual general meeting to the conclusion of the 2019 annual general meeting.

The Company has recently completed the issue of the fourth tranche of the Company's mid-term notes for 2019 (the "Notes"). The issuing amount of type 1 of the Notes was RMB2.5 billion for a term of 3+N years. The unit face value is RMB100 and the issuing interest rate is 4.15%. The issuing amount of type 2 of the Notes was RMB1.5 billion for a term of 5+N years. The unit face is RMB100 and the issuing interest rate is 4.53%.

Agricultural Bank of China Limited and Bank of Beijing Co., Ltd. act as the lead underwriters to form the underwriting syndicate for the Notes, which were placed through book-building and issued in the domestic interbank market. The proceeds from the Notes will be used to repay due debt financing instruments.

The relevant documents in respect of the Notes are posted on China Money and Shanghai Clearing House at websites of www.chinamoney.com.cn and www.shclearing.com, respectively.

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The Notes do not constitute any transaction under Chapter 14 and Chapter 14A of the Listing Rules.

By Order of the Board

Huaneng Power International, Inc

Huang Chaoquan

Company Secretary

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

Shu Yinbiao (Executive Director)	Yue Heng (Independent Non-executive Director)
Huang Jian (Non-executive Director)	Xu Mengzhou (Independent Non-executive Director)
Wang Yongxiang (Non-executive Director)	Liu Jizhen (Independent Non-executive Director)
Mi Dabin (Non-executive Director)	Xu Haifeng (Independent Non-executive Director)
Guo Hongbo (Non-executive Director)	Zhang Xianzhi (Independent Non-executive Director)
Cheng Heng (Non-executive Director)
Lin Chong (Non-executive Director)
Beijing, the PRC
8 November 2019

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