Supplemental Notice of 2010 Annual General Meeting

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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: 00991)

                    SUPPLEMENTAL NOTICE OF 2010 ANNUAL GENERAL MEETING

Reference is made to the Notice of 2010 Annual General Meeting of Datang International Power
Generation Co., Ltd. (the "Company") issued on 15 April 2011 ("AGM Notice").

Recently, the board of directors of the Company (the "Board") received from its controlling 
shareholder, China Datang Corporation ("CDC"), a proposal letter for adding additional 
resolutions. Details of the proposal are as follows:

The "Resolution on the Provision of Guarantee for the Financing by Shanxi Datang 
International Yuncheng Power Generation Company Limited" and the "Resolution on the 
Application for Public Issuance of Corporate Bonds in 2011" are proposed to be tabled to  
the 2010 annual general meeting (the "AGM") as additional resolutions for consideration and 
approval by the shareholders given that such resolutions have been considered and passed by 
the eighth meeting of the seventh session of the Board and tenth meeting of the seventh 
session of the Board.

SUPPLEMENTAL NOTICE IS HEREBY GIVEN that the AGM of Datang International Power Generation 
Co., Ltd. (the "Company") will be held at the function room of 5/F, Intercontinental Hotel, 
No. 11 Financial Street, Xicheng District, Beijing, the People's Republic of China (the 
"PRC") on 3 June 2011 (Friday) at 9:00 a.m. to consider and, if thought fit, pass the 
following additional resolutions:

                                     Ordinary Resolution:

1. to consider and approve the "Resolution on the Provision of Guarantee for the Financing 
by Shanxi Datang International Yuncheng Power Generation Company Limited " (Note 2);

                                     Special Resolution:

2. to consider and approve the "Resolution on the Application for Public Issuance of 
Corporate Bonds in 2011" (Note 3).


                                                                   By Order of the Board
                                                                          Zhou Gang
                                                                   Secretary to the Board

Beijing, the PRC
18 May 2011


Notes:

1. Save as the newly added resolutions and other information set out in the Supplemental 
   Notice of 2010 Annual General Meeting, other matters in relation to the AGM as set out 
   in the AGM Notice remain unchanged.

2. The Company proposes to provide a guarantee with joint liability for the financing by 
   Shanxi Datang International Yuncheng Power Generation Company Limited in an amount not 
   exceeding RMB600 million. Please refer to the announcement of the Company dated 9 May 
   2011 for details of the guarantee.

3. Major particulars of the application for the public issuance of corporate bonds in 2011:

   (I)  The Company intends to continue to apply for the public issuance of corporate bonds 
        within China in 2011 (the "Issuance"). Details of the proposal are as follows:

        (1) the proposal on the issuance of corporate bonds in 2011

            (a) Issuance size: not more than RMB6 billion;

            (b) Term: not more than 15 years;

            (c) Arrangements for placing the corporate bonds with shareholders of the 
                Company: the corporate bonds in the Issuance may be placed with holders of 
                A shares of the Company. Details of the placement arrangements will be 
                tabled to the shareholders' general meeting which will authorise the Board 
                to determine such arrangements based on the market conditions at the time of 
                the issuance and the specific matters related to the issuance;

            (d) Use of proceeds: to repay the existing banks loans and replenish the 
                working capital of the Company;

            (e) In accordance with Article 25 of "Rule No. 23 for the Content and Format of 
                Information Disclosure by Companies in Public Offering of Securities" 
                stipulated by the China Securities Regulatory Commission ("CSRC") regarding
                the requirements of the protective measures, in the event of expected 
                failure to pay the principal and interests of the corporate bonds on 
                schedule or failure to pay the principal and interests of the corporate 
                bonds on schedule upon maturity, the Company will at least adopt the 
                following protective measures:

                i.   not to distribute profits to the shareholders;

                ii.  to suspend the implementation of capital expenditure projects such as
                     major foreign investments, mergers or acquisitions;

                iii. to deduct or cease the payment of salaries and bonuses of directors 
                     and senior management staff;

                iv.  not to redesignate main responsible persons from their original 
                     positions.

        (2) The above issuance proposal is valid for 24 months from the date on which the
            proposal is considered and approved at the shareholders' general meeting.

   (II) To ensure the smooth issuance of corporate bonds, it is proposed to the 
        shareholders' general meeting to authorise the Board (and agrees that the Board 
        will authorise any two directors) to determine the following matters to the extent 
        of the resolution on the Issuance proposal being passed at the shareholders' 
        general meeting:

        (1) formulate a specific proposal on the issuance of the corporate bonds based on 
            market conditions, which includes the number of tranches of the issuance, the 
            timing and quantity of the issuance, the term of the bonds, the interest rate 
            or the method of determining such interest rate, specific uses of the proceeds, 
            the term and method of repayment of the principal and interests thereon, 
            whether put or call provisions will be arranged, whether guarantees and methods 
            of guarantees will be provided and so forth;

        (2) make necessary amendments to the relevant documents related to the issuance 
            based on the opinions of the CSRC and/or changes in the market conditions;

        (3) engage intermediaries related to the Issuance, and sign legal documents 
            including contracts and agreements related to the issuance of corporate bonds;

        (4) sign legal documents related to the issuance and listing of corporate bonds, 
            and handle other relevant matters;

        (5) the above authorisation will be valid for 24 months from the date on which the
            authorisation is considered and approved at the general meeting.

4. Other Matters

   (1) Each of the holders of H shares entitled to attend and vote at the AGM, is entitled 
       to appoint one or more proxies to attend and vote on his/her behalf. A proxy need 
       not be a shareholder of the Company.

   (2) If the holders of H shares have appointed more than one proxy to attend the AGM, 
       the proxies can only exercise their voting rights by way of poll.

   (3) To be valid, the holders of H shares must deliver the proxy form, and if such proxy
       form is signed by a person on behalf of the appointer pursuant to a power of 
       attorney or other authority, a notarised copy of that power of attorney or other 
       authority, to the Company's H share registrar, Computershare Hong Kong Investor 
       Services Limited of 17M Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, 
       Hong Kong, in not less than 24 hours before the time scheduled for holding the AGM.

   (4) The revised proxy form supersedes and replaces the proxy form which was previously
       distributed with the shareholders' circular dated 15 April 2011 (the "Previous 
       Proxy Form") and that the Previous Proxy Form is invalid. Shareholders who have 
       signed and returned the Previous Proxy Form should sign and return the revised 
       proxy form in accordance with instructions of this Supplemental Notice of 2010 
       Annual General Meeting.

   (5) The AGM is expected to last for two hours. Attending shareholders and their proxies 
       shall be responsible for their own travel and accommodation expenses.

The Company's office address:

No. 9 Guangningbo Street,
Xicheng District,
Beijing, the PRC
Postcode: 100033
Telephone: [phone]
Fax: [phone] or (8610) 8800 8672

As at the date of this notice, 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