Positive Profit Alert

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.

                               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 the 
Inside Information Provisions under Part XIVA of the SFO, Rules 13.09(2)(a) and 13.10(B) of the Listing Rules 
to provide shareholders of the Company and the public with the financial information of the Company. This 
announcement is also disseminated on the Shanghai Stock Exchange simultaneously. The estimated increase 
referred to in this announcement is only preliminary estimates made by the Company and has not been audited 
by any certified public accountants. Detailed financial information of the Company will be disclosed in the 
2013 interim report of the Company. Investors are advised to exercise caution when dealing in the shares of 
the Company.

The Company and all members of the board of directors (the "Board") warrant that there are no false 
representations and misleading statements contained in, or material omissions from this announcement, and 
severally and jointly accept the responsibility for the truthfulness, accuracy and completeness of the content 
of this announcement.

This announcement is made by the Company pursuant to the Inside Information Provisions (as defined under 
the 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") and 
Rules 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