Supplemental Notice of 2013 Third 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.

             DATANGINTERNATIONAL POWER GENERATIONG CO. LTD.

     (a sino-foreign joint stock limited company incorporated in the 
                      People's Republic of China)
                           (Stock Code: 00991)

                         SUPPLEMENTAL NOTICE OF
                2013 THIRD EXTRAORDINARY GENERAL MEETING

Reference is made to the Notice of 2013 Third Extraordinary General Meeting 
(the "EGM") of Datang International Power Generation Co., Ltd. (the "Company") 
dated 13 September 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 resolution for 
the consideration and approval by the shareholders of the Company 
(the "Shareholders") at the EGM. Details of the proposal are as follows:

The "Resolution on the Proposal of Changing Shareholders' Representative 
Supervisor of the Company to be Considered at the General Meeting" is proposed 
to be considered and approved as ordinary resolution by the Shareholders at 
the EGM after being considered and approved at the third meeting of the 
eighth session of the Board.

SUPPLEMENTAL NOTICE IS HEREBY GIVEN that the EGM of the Company will be held 
at Summer Room, 2/F, The Westin Beijing Financial Street, 9B Financial Street, 
Xicheng District, Beijing, the People's Republic of China (the "PRC") on 
29 October 2013 (Tuesday) at 9:00 a.m. to consider and, if thought fit, pass 
the following ordinary resolution:

                            ORDINARY RESOLUTION

4. To consider and approve "the Resolution on the Proposal of Changing 
   Shareholders' Representative Supervisor of the Company to be Considered at 
   the General Meeting" (Note 2).


                                                         By Order of the Board
                                                               Zhou Gang
                                                         Secretary to the Board

Beijing, the PRC
15 October 2013

Notes:

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

2. Due to works' adjustment of Mr. Zhou Xinnong, the appointment of 
   Mr. Li Baoqing to replace Mr. Zhou Xinnong to act as a Shareholders' 
   Representative Supervisor of the Company is proposed to be considered and 
   approved at the EGM.

   The biography of Mr. Li Baoqing is as follows:

   Li Baoqing, aged 48, is a graduate of public finance studies from the 
   Research Institute for Fiscal Science of the Ministry of Finance, a doctoral 
   candidate, and a senior accountant. Mr. Li started to work at the North 
   China power grid system in 1987, and has successively served as the vice 
   manager cum chief engineer of the Fourth Company of Beijing Coal-fired Power 
   Generation Construction Company, the vice director and director of the funding 
   division, finance department of North China Power Group Company, the vice 
   director (Person-in-Charge) and director of the funding and property rights 
   division, finance department of CDC, and deputy general manager of China 
   Datang Finance Co., Ltd.. Mr. Li is currently the director of the financial 
   management department of CDC cum general manager and deputy Party Committee 
   Secretary of China Datang Finance Co., Ltd., and the general manager of China 
   Datang Corporation Capital Holding Co., Ltd..

   Mr. Li has long been engaged in positions related to finance, operation and 
   management in power corporations and has rich managerial experience in finance 
   and power corporations.

   The term of office of Mr. Li will commence from the day of approval by the 
   shareholders at the EGM until the day of the end of the term of the eighth 
   session of Supervisory Committee (i.e. 30 June 2016). If elected, Mr. Li will 
   not be entitled to any remuneration from being a supervisor of the Company, 
   but he will be entitled to, subject to the Shareholders' approval at the EGM, 
   certain travel subsidies (details of which please refer to Note 3 of the EGM 
   Notice). As at the date of this notice, Mr. Li does not have any interest in 
   the shares of the Company within the meaning of Part XV of the Securities and 
   Futures Ordinance, and has not been subjected to any public sanctions by 
   statutory or regulatory authority.

   Mr. Li intends to take up the position to act as a director of Datang Huayin 
   Electric Power Co., Ltd. (a company listed on the Shanghai Stock Exchange, A 
   shares stock code: 600744). Saved as disclosed above, Mr. Li has not held any 
   directorships in any public listed companies in the past three years and he 
   does not have any relationship with any directors, senior management or 
   substantial or controlling shareholders (as defined in the Rules Governing 
   the Listing of Securities (the "Listing Rules") on the Stock Exchange of 
   Hong Kong Limited (the "Stock Exchange")) of the Company. Save as disclosed 
   above, there are no other matters concerning the proposed appointment of 
   Mr. Li that need to be brought to the attention of the shareholders and the 
   Stock Exchange and there are no other matters which shall be disclosed 
   pursuant to Rule 13.51(2)(h) to (v) of the Listing Rules.    

3. 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 13 September 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 Third 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:

Chen Jinhang, Hu Shengmu, Cao Jingshan, Fang Qinghai, Zhou Gang, Li Gengsheng, 
Cao Xin, Cai Shuwen, Liu Haixia, Guan Tiangang, Dong Heyi*, Ye Yansheng*, 
Li Hengyuan*, Zhao Jie*, Jiang Guohua*

* Independent non-executive directors