Completion of Shareholdings Increase by CDC

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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: 991)                               

                          OVERSEAS REGULATORY ANNOUNCEMENT
 
                        ANNOUNCEMENT ON COMPLETION OF A PLAN 
                        TO INCREASE SHAREHOLDINGS IN DATANG 
                     INTERNATIONAL POWER GENERATION CO., LTD BY
                              China Datang Corporation

Special Notice:

The board of directors (the "Board") and all directors (the "Directors") of the Company 
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 pursuant to Rule 13.09(2) of the Rules Governing the Listing of 
Securities on The Stock Exchange of Hong Kong Limited. 


Datang International Power Generation Co., Ltd. (the "Company") received a notice from 
China Datang Corporation ("CDC"), the controlling shareholder of the Company, stating that 
China Datang Overseas Investment Co., Ltd. ("Overseas Investment Co"), a wholly-owned 
subsidiary of CDC, confirmed the proceeding of a plan to increase its shareholding in the 
Company by an amount not exceeding 2% of the total share capital of the Company via 
off-market transactions in Hong Kong since 11 February 2010. As at 21 June 2010, the 
amount of aggregated increased shareholding of Overseas Investment Co in the Company 
accounted for 1.998% of the total share capital of the Company. CDC confirmed that such 
plan has been completed. The Company announces the details as follows:

I.  Details of the increase in holding of shares

    On 11 February 2010, CDC purchased a portion of H shares of the Company through 
    Overseas Investment Co, a wholly-owned subsidiary of CDC, via off-market transactions 
    in Hong Kong. CDC also intended to continue to purchase H shares of the Company 
    through Overseas Investment Co via on-market or off-market transactions within 12 
    months from 11 February 2010, with the proportion of aggregated purchase not exceeding 
    2% of the total issued share capital of the Company (including the portion already 
    purchased as at 11 February 2010), and CDC undertook that they would not reduce their 
    respective shareholdings in the Company during the course of the share purchase plan 
    and the statutory period. 

    On 21 June 2010, CDC confirmed the share purchase plan has been completed.

    As at 21 June 2010, CDC purchased 246,000,000 shares of the Company in aggregate, 
    representing 1.998% of the current total share capital of the Company, which amounts 
    to 12,310,037,578 shares. Upon completion of the share purchase plan, CDC directly 
    held 3,959,241,160 A shares of the Company and indirectly held 480,680,000 H shares 
    of the Company through Overseas Investment Co, the sum of which representing 
    approximately 36.07% of the current total issued share capital of the Company. 

    CDC has adhered to its undertaking and did not reduce its holding of shares in the 
    Company during the course of the share purchase plan.

II. Others

    CDC will apply to the China Securities Regulatory Commission for the exemption on the 
    obligation of making a general offer in accordance with the relevant regulations.

                                                                By Order of the Board  
                                                                       Zhou Gang     
                                                               Secretary to the Board 

Beijing, the PRC, 21 June 2010

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

Zhai Ruoyu, Hu Shengmu, Cao Jingshan, Fang Qinghai, Zhou Gang, Liu Haixia, Guan Tiangang, 
Su Tiegang, Ye Yonghui, Li Gengsheng, Xie Songlin*, Liu Chaoan*, 
Yu Changchun*, Xia Qing* and Li Hengyuan*.


*  Independent non-executive Directors