Datang International Power Generation : ANNOUNCEMENT PROVISIONS FOR IMPAIRMENT RECEIPT OF ENQUIRY LETTER FROM THE SHANGHAI STOCK EXCHANGE

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(a sino-foreign joint stock limited company incorporated in the People's Republic of China)

(Stock Code: 00991)

ANNOUNCEMENT

PROVISIONS FOR IMPAIRMENT - RECEIPT OF ENQUIRY LETTER

FROM THE SHANGHAI STOCK EXCHANGE

This announcement is made by Datang International Power Generation Co., Ltd. (the "Company") pursuant to Part XIVA of the Securities and Futures Ordinance (Chapter 571, Laws of Hong Kong) and Rules 13.09(2)(a) and 13.10B of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited.

Reference is made to the announcement of the Company dated 20 December 2019 (the "Announcement") in respect of the provisions for impairment of the long-term equity investment and the fixed assets of the Company (as the parent company) and Renewable Resource Company (as the subsidiary). Unless otherwise defined herein, capitalised terms used in this announcement shall have the same meanings as defined in the Announcement.

On 20 December 2019, the Company received the "Enquiry Letter in respect of the Provisions for Impairment on Assets of Datang International Power Generation Co., Ltd. (Shang Zheng Gong Han [2019] No. 3126) 《( 關於對大唐國際發電股份有限公司計提資產減值準備相關事項的問詢函》上證 公函[2019] 3126 號)" ("Enquiry Letter") from the Shanghai Stock Exchange. The material content of the Enquiry Letter is as follows:

On 20 December 2019, the Company issued an announcement which stated that provisions are intended to be made for the impairment of long-term equity investment and fixed assets of the Company (as the parent company) and Renewable Resource Company, a subsidiary of the Company, including provisions for the impairment on part of the assets of the alumina production workshop of Renewable Resource Company in the amount of approximately RMB1,258 million and on the long- term equity investment of the Company as the parent company in the amount of approximately RMB750 million.

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After post-vetting and pursuant to Rule 17.1 of the "Rules Governing the Listing of Shares on the Shanghai Stock Exchange" 《( 上海證券交易所股票上市規則》), the Company is requested to verify and disclose supplemental information of the following matters:

1. The Company is requested to disclose supplemental information on the impairment of assets: (1) particulars on the assets of the alumina production workshop for which the provision for impairment is made, including the type and name of the assets, time of transfer or purchase, the original book value, accumulative depreciation and carrying value of assets, the amount of the impairment, reasons for the impairment and subsequent disposal arrangement, etc.; (2) in light of the actual utilization of the fixed assets, supplemental information on the point of time at which the signs for impairment of fixed assets arose, the reasons for and reasonableness of the provisions of asset impairment to be made for the current period, and whether there was any under-provision for impairment during the prior periods; (3) supplemental information on the method and process of impairment tests for the aforesaid fixed assets, including identification of the assets or asset groups, selection of key parameters, basis of determination and other information, as well as explanation of whether the amount of provisions to be made is accurate and appropriate and whether the provisions for impairment are compliant with the relevant requirements of the accounting standards. The auditor and valuer are requested to issue their opinions on these matters.

1. As stated in the previous announcement of the Company dated 6 December 2018, the Company acquired the 49% equity interests of Renewable Resource Company held by Shanghai Duomai Environmental Protection Technology Center (LLP)（上海朵邁環保科技中心（有限合 夥））("Shanghai Duomai") for nil consideration. Upon completion of the acquisition, Renewable Resource Company became a wholly-owned subsidiary of the Company. In addition, the Company proposed to implement comprehensive governance proposals of debt restructuring and other arrangements for Renewable Resource Company, suspend the production in the alumina branch plant and replenish the capital of Renewable Resource Company with an amount of RMB2,737 million. Based on the details of the comprehensive governance proposals as set out in the previous announcement of the Company and the appraisal result, the Company is requested to clarify if the asset impairment falls within the expected range of the previous proposals and the reasons thereof as well as if there is any inconsistency in the disclosure of information.

1. As stated in the previous announcement of the Company dated 31 October 2019, the Company would acquire, by way of agreement, the minority interests in Hohhot Thermal Power Generation Company held by its controlling shareholder China Datang Corporation Ltd. at the consideration of RMB17,820,300, and meanwhile Renewable Resource Company would absorb and merge with Hohhot Thermal Power Generation Company. The Company is requested to disclose supplemental information on: (1) the reasons for and reasonableness of the substantial provisions for impairment to be made by Renewable Resource Company within a short period of time after the completion of the above transactions; and (2) whether there were signs of impairment on the relevant assets of Hohhot Thermal Power Generation Company that were previously absorbed and merged, and if yes, please specify.

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The Company is requested to issue a reply to the Shanghai Stock Exchange before 27 December 2019.

By Order of the Board

Jiang Jinming

Company Secretary

Beijing, the PRC, 20 December 2019

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

Chen Feihu, Wang Sen, Wang Xin, Liang Yongpan, Ying Xuejun, Zhu Shaowen, Cao Xin, Zhao Xianguo, Zhang Ping, Jin Shengxiang, Liu Jizhen*, Feng Genfu*, Luo Zhongwei*, Liu Huangsong*, Jiang Fuxiu*

• Independent non-executive directors

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