Positive Profit Alert

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibilityfor the contents of this announcement, make no representation as to its accuracy or completeness and expresslydisclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or anypart of the contents of this announcement. DATANG INTERNATIONAL POWER GENERATION CO., LTD. (a sino-foreign joint stock limited company incorporated in the People's Republic of China) (Stock Code: 00991) POSITIVE PROFIT ALERT ESTIMATED INCREASE IN PROFIT FOR THE INTERIM RESULTS OF 2013 Special Notice:This announcement is made by Datang International Power Generation Co., Ltd. (the "Company") pursuant to theInside Information Provisions under Part XIVA of the SFO, Rules 13.09(2)(a) and 13.10(B) of the Listing Rulesto provide shareholders of the Company and the public with the financial information of the Company. Thisannouncement is also disseminated on the Shanghai Stock Exchange simultaneously. The estimated increasereferred to in this announcement is only preliminary estimates made by the Company and has not been auditedby any certified public accountants. Detailed financial information of the Company will be disclosed in the2013 interim report of the Company. Investors are advised to exercise caution when dealing in the shares ofthe Company. The Company and all members of the board of directors (the "Board") warrant that there are no falserepresentations and misleading statements contained in, or material omissions from this announcement, andseverally and jointly accept the responsibility for the truthfulness, accuracy and completeness of the contentof this announcement. This announcement is made by the Company pursuant to the Inside Information Provisions (as defined underthe Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited (the "Listing Rules")),under Part XIVA of the Securities and Futures Ordinance (Cap. 571, Laws of Hong Kong) (the "SFO") andRules 13.09(2)(a) and 13.10(B) of the Listing Rules. I. Estimated results for the reporting period 1. Period to which the estimated results apply: From 1 January 2013 to 30 June 2013. 2. Estimated results: According to the preliminary estimates made by the Company, net profit attributable to the equity holders of the Company as reported on the consolidated statements of the Company for the first half of 2013 is expected to increase by 70%-80% as compared to the corresponding period of the previous year. 3. The figures of the estimated results have not been audited by any certified public accountants. II. Results of the corresponding period of the previous year 1. Net profit attributable to the equity holders of the Company as reported in the consolidated statements in the first half of 2012: Approximately RMB1,089,086,000. 2. Basic earnings per share in the first half of 2012: RMB0.0818 per share. III. Reasons for the change in the results The prominent increase in profit for the results in the first half of 2013 was mainly attributable to the drop in coal prices, rebound in the results of coal-fired power segment and significant improvements in the results of new energy projects. IV. Risk warning The estimated results for the reporting period are only preliminary estimates made by the Company. The detailed and precise financial information of the Company shall be based on the 2013 interim report which is to be officially disclosed by the Company. Investors are advised to exercise caution when dealing in the shares of the Company. By Order of the Board Zhou Gang Secretary to the Board Beijing, the PRC, 17 July 2013 As at the date of this announcement, the Directors of the Company are:Chen Jinhang, Hu Shengmu, Cao Jingshan, Fang Qinghai, Zhou Gang, Liu Haixia, Guan Tiangang, Cao Xin, Cai Shuwen,Li Gengsheng, Dong Heyi*, Ye Yansheng*, Li Hengyuan*, Zhao Jie*, Jiang Guohua* * Independent non-executive Directors