Supplemental Notice of 2013 First EGM

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong
Limited take no responsibility for the contents of this notice, 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 notice.

                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
                    2013 FIRST EXTRAORDINARY GENERAL MEETING


Reference is made to the Notice of 2013 First Extraordinary General Meeting 
of Datang International Power Generation Co., Ltd. (the "Company") dated 5 
February 2013 (the "EGM Notice").

After the date of the EGM Notice, 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 for the
consideration and approval by the shareholders of the Company (the
"Shareholders") at the 2013 First Extraordinary General Meeting (the "EGM").
Details of the proposal are as follows:

The "Resolution on the Provision of Coal by Inner Mongolia Electric Power 
Fuel Company Ltd. to the Corporations Managed by the Company" and the
"Resolution on Certain Regular Continuing Connected Transactions  of  the 
Company  in  2013",  are  proposed  to  be  considered  and  approved  as 
ordinary resolutions  by  the  Shareholders  at  the  EGM  after  being 
considered  and  approved  at  the  thirty-fourth meeting of the seventh
session of the Board.

SUPPLEMENTAL NOTICE IS HEREBY GIVEN that the EGM of 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 25 March 2013 (Monday) at 9:00 a.m. to consider and, if
thought fit, pass the following ordinary resolutions:

                             ORDINARY RESOLUTIONS


1. To consider and approve the "Resolution on the Provision of Coal by 
   Inner Mongolia Electric Power Fuel Company Ltd. to the Corporations 
   Managed by the Company" (Note 2).


2. To consider and approve the "Resolution on Certain Regular Continuing
   Connected Transactions of the Company in 2013" (Note 3).


                                                    By Order of the Board
                                                           Zhou Gang
                                                    Secretary to the Board


Beijing, the PRC
4 March 2013
 
Notes:

1. Save as the additional resolutions and other information as set out in
   this Supplemental Notice of 2013 First Extraordinary General Meeting, 
   all the information set out in the EGM Notice remains unchanged.

2. Inner  Mongolia  Electric  Power  Fuel  Company  Ltd.  ("Inner  Mongolia
   Fuel  Company"),  a  wholly-owned  subsidiary  of Beijing  Datang  Fuel
   Company  Limited  ("Beijing  Datang  Fuel  Company),  a  wholly-owned
   subsidiary  of  the  Company, entered into the Inner Mongolia Fuel
   Purchase Framework Agreements with certain power plants or subsidiaries
   of the Company on 6 February 2013 for a term from 1 January 2013 to 31 
   December 2013. During the term of the agreements, Inner Mongolia Fuel 
   Company agreed to supply coal to certain power plants or subsidiaries 
   of the Company with maximum aggregate annual transaction amount of 
   approximately RMB5,425 million.

   For details of the transactions, please refer to the announcement of the
   Company dated 6 February 2013 and the relevant circular dated 4 March 
   2013.

3. Certain continuing connected transactions of the Company in 2013 in 
   relation to purchase of coal

   3.1 Purchase of coal from Beijing Datang Fuel Company by the Company and
       its subsidiaries. The Company entered into the Fuel Purchase 
       Framework Agreement with Beijing Datang Fuel Company on 6 February 
       2013, pursuant to which, the Company and certain of its subsidiaries
       agreed to purchase coal from Beijing Datang Fuel Company with maximum
       aggregate annual transaction amount of approximately RMB35,505 million
       for a term from 1 January 2013 to 31 December 2013.

   3.2 Sale of coal by Datang International (Hong Kong) Limited ("Hong Kong 
       Company") to certain subsidiaries of the Company

       3.2.1 Hong Kong Company entered into the Hong Kong-Beijing Fuel Sale
             Framework Agreement with Beijing Datang Fuel Company on 6 
             February 2013, pursuant to which, Hong Kong Company agreed to
             sell coal to Beijing Datang Fuel Company, with maximum aggregate
             annual transaction amount of approximately USD380 million, 
             equivalent to RMB2,367.4 million, for a term of one year 
             commencing from 1 January 2013 to 31 December 2013.

       3.2.2 Hong Kong Company entered into the Hong Kong-Power Plants Fuel 
             Sale Framework Agreement with the Company on 6 February 2013, 
             pursuant to which, Hong Kong Company agreed to sell coal to 
             Guangdong Datang International Chaozhou Power Generation Company
             Limited and Jiangsu Datang International Lvsigang Power 
             Generation Company Limited, with a maximum aggregate annual 
             transaction amount of approximately USD522 million, equivalent
             to RMB3,252.1 million, for a term from 1 January 2013 to 31
             December 2013.

   For details of the transactions, please refer to the announcement of the
   Company dated 6 February 2013 and the relevant circular dated 4 March 
   2013.

4. Special resolutions numbered 1 and 2 under the EGM Notice dated 5 
   February 2013 will be renumbered as special resolutions numbered 3 and
   4 respectively.

5. Other Matters

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

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

   (3) To be valid, holders of H shares must deliver the Revised Proxy 
       Form (as define below), and if such revised 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 
       EGM.

   (4) A revised proxy form for use at the EGM (the "Revised Proxy 
       Form") is published on the websites of The Stock Exchange of Hong
       Kong Limited (www.hkexnews.hk) and the Company (www.dtpower.com).
       The Revised Proxy Form  shall supersede and replace the proxy
       form enclosed with the EGM Notice dated 5 February 2013 (the 
       "Previous Proxy Form") and that the Previous Proxy Form shall be
       invalid. Shareholders who have signed and returned the Previous 
       Proxy Form should complete and return the Revised Proxy Form in 
       accordance with the instructions provided in this Supplemental 
       Notice of 2013 First Extraordinary General Meeting. Completion and
       return of the Revised Proxy Form will not preclude a Shareholder 
       from attending and voting at the EGM in person.

   (5) The EGM is expected to last for an hour. 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] or (8610) 8800 8682
Fax: [phone]

As at the date of this supplemental notice, the directors of the Company are:

Liu Shunda, Hu Shengmu, Cao Jingshan, Fang Qinghai, Zhou Gang, Liu Haixia, 
Guan Tiangang, Mi Dabin, Ye Yonghui, Li Gengsheng, Li Yanmeng*, 
Zhao Zunlian*, Li Hengyuan*, Zhao Jie*, Jiang Guohua*

*  Independent non-executive directors