Estimated Increase in Profit for 2010 Annual Re...

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                  DATANG INTERNATIONAL POWER GENERATION CO., LTD.
   (a sino-foreign joint stock limited company incorporated in the People's    
                              Republic of China)
                              (Stock Code: 991)                      

                         PRICE-SENSITIVE INFORMATION/                        
                       OVERSEAS REGULATORY ANNOUNCEMENT                        

                     ESTIMATED INCREASE IN PROFIT FOR THE                      
                            ANNUAL RESULTS OF 2010                             

Special Notice:

This announcement is made by Datang International Power Generation Co., Ltd.
(the "Company") pursuant to the requirements of Rules 13.09(1) and 13.09(2) of
the Rules Governing the Listing of Securities on The Stock Exchange of Hong
Kong Limited 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 estimates referred to in this
announcement are only preliminary estimates made by the Company and have not
been audited by any certified public accountants. Detailed financial
information of the Company will be disclosed in the 2010 annual 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.

I.   Estimated results for the reporting period
   
     1. Period to which the estimated results apply: From 1 January 2010 to 31
        December 2010.
   
     2. Estimated results: As preliminary estimated by the Company, net profit
        attributable to the equity holders of the Company as reported on the
        consolidated statements of the Company for year 2010 is expected to
        increase by more than 50% 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: Approximately RMB1,479,469,000 (under the
        China Accounting Standards for Business Enterprises).
   
     2. Basic earnings per share: RMB0.1256 per share (under the China Accounting
        Standards for Business Enterprises).
   
III. Reasons for the change in the results
   
     The significant increase in the results for the reporting period was mainly
     attributable to a decrease in fixed costs resulted from changes in accounting
     estimates of fixed assets by the Company in order to enhance the comparability
     of accounting information among listed companies within the same industry.
     Meanwhile, there was an increase in revenue from principal operations owing to
     an increase in installed capacity of generating units of the Company and an
     improvement in power generation structure during the reporting period, as well
     as an increase in the non-power businesses of the Company also contributed to
     the increased profits for the reporting period.

IV.  Risk warning
   
     The estimated results for the reporting period are only preliminary estimates
     made by the Company. The Company will disclose the detailed financial
     information in its 2010 annual report. 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, 25 January 2011

As at the date of this announcement, the directors of the Company are:
Liu Shunda, Hu Shengmu, Cao Jingshan, Fang Qinghai, Zhou Gang, Liu Haixia, Guan
Tiangang, Su Tiegang, Ye Yonghui, Li Gengsheng, Li Yanmeng*, Zhao Zunlian*, Li
Hengyuan*, Zhao Jie*, Jiang Guohua*

* Independent non-executive directors