Supplemental Notice of 2014 AGM

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 2014 ANNUAL GENERAL MEETING               

Reference is made to the notice (the "AGM Notice") of 2014 annual general
meeting (the "AGM") of Datang International Power Generation Co., Ltd. (the
"Company" or "Datang International") dated 7 May 2015.

After the date of the AGM Notice, the board of directors of the Company (the
 "Board")  received from China Datang Corporation ("CDC"),  its  controlling
 shareholder,  a  proposal  letter  requesting  to add an additional resolution
for consideration and approval by the shareholders of the Company (the
"Shareholders") at the AGM. Details of the proposal are as follows:

The "Resolution on the Provision of Guarantee for the Financial Leasing of
 Datang  Inner  Mongolia Duolun Coal Chemical Company Limited" is proposed to
be considered and approved as an additional ordinary resolution by the
Shareholders at the AGM, given that the resolution has been considered and
passed at the tenth meeting of the eighth session of the Board and the relevant
agreement is to be entered into in the near future.

NOTICE IS HEREBY GIVEN that the AGM 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 25 June 2015 (Thursday)
at 9:30 a.m. to consider and, if thought fit, pass the  following additional
ordinary resolution:

                              ORDINARY RESOLUTION                              

7.  to consider and approve the "Resolution on the Provision of Guarantee for
the Financial Leasing of Datang Inner Mongolia Duolun Coal Chemical Company
Limited" (Note 2)

                                                          By Order of the Board
                                                                      Zhou Gang
                                                         Secretary to the Board

Beijing, the PRC, 3 June 2015

Notes:

1. Save as the additional resolution and other information set out in this
Supplemental Notice of 2014 Annual General Meeting, all the information set out
in the AGM Notice remains unchanged. The special resolution originally 
numbered  7,  i.e., "Proposal on Proposing to the General Meeting to Grant a
Mandate to the Board to Determine the Issuance of New Shares of Not More Than
20% of Each Class of Shares" will be renumbered accordingly.

2. The financial leasing business of Datang Inner Mongolia Duolun Coal Chemical
Company Limited ("Duolun Coal Chemical Company") was considered and approved at
the tenth meeting of the eighth session of the Board, with financial leasing
limit amounted to no more than RMB10 billion. The Company and CDC, the
controlling shareholder of the Company, shall provide joint liability guarantee
to Duolun Coal Chemical Company for its financial leasing based on their
respective equity holding proportions in Duolun Coal Chemical Company. After
negotiation between the parties, the financial leasing limit was finalised with
an amount of no more than RMB8 billion. The Company proposed to provide joint
liability guarantee to Duolun Coal Chemical Company for its financial leasing
based on its actual  needs  in  accordance  with  the  equity interests held by
Datang Energy and Chemical Company Limited, a wholly-owned subsidiary of the
Company, in Duolun Coal Chemical Company (i.e. 60%), with an aggregate
principal of guarantee of no more than RMB4.8 billion; CDC, the controlling
shareholder of the Company, proposed to provide joint liability guarantee for
Duolun Coal Chemical Company's financial leasing based on CDC's equity holding
(40%) in Duolun Coal Chemical Company, with an aggregate principal of guarantee
of no more than RMB3.2 billion.

For details of the abovementioned guarantees, please refer to the relevant
announcement of the Company issued on the same day.

3. 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 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, Holders of H shares must deliver the Revised Proxy Form (as
defined 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 at 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) A revised proxy form for use at the AGM (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 AGM Notice dated 7
May 2015 (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 2014 Annual General
Meeting. Completion and return of the Revised Proxy Form will not preclude a
Shareholder from attending and voting at the AGM in person.

(5) The AGM is expected to last for one 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 notice, the Directors of the Company are:

Chen Jinhang, Hu Shengmu, Wu Jing, Liang Yongpan, Zhou Gang, Cao
Xin, Cai  Shuwen, Liu Haixia, Guan Tiangang, Yang Wenchun, Dong Heyi*, Ye
Yansheng*,  Zhao Jie*, Jiang Guohua*,  Feng Genfu*

*    Independent non-executive Directors