Changes in Accounting Estimates of Fixed Assets

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong
Limited take no responsibility for the contents of this announcement, 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 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 CHANGES IN                          
                     ACCOUNTING ESTIMATES OF FIXED ASSETS                      

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 contents 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 (the "Listing
Rules").

I. General information regarding the changes in accounting estimates

1. Date of change: 1 January 2010

2. Reason for change: In order to reflect the Company's financial position and
operating results in a fairer and more appropriate manner so that the
depreciation periods for fixed assets is brought closer to their real useful
lives, the Company has made changes to the estimated useful lives and estimated
net salvage values of the fixed assets pursuant to the accounting standards and
other related accounting and tax regulations in combination with the actual
situation of the Company.


3. Details about the situations before and after the changes are set out as
follows:


              Before the Changes                               After the Changes               
                                                                                               
Category of    Estimated Estimated Annual       Category of    Estimated Estimated Annual      
fixed assets   useful    salvage   depreciation fixed assets   useful    salvage   depreciation
               life      rate %    rate (%)                    life      rate %    rate (%)    
                                                                                               
Generating &      12         3         8.08     Generating &     12-20       5      4.75-7.92  
thermal                                         thermal                                        
equipment                                       equipment                                      
                                                                                               
Transmission      30         3         3.23     Transmission     20-35       5      2.71-4.75  
lines                                           lines                                          
                                                                                               
Substation        18        0-3     5.39-5.56   Substation       18-22       5      4.32-5.28  
equipment                                       equipment                                      
                                                                                               
Distribution     14-18       3      5.39-6.93   Distribution     14-22       5      4.32-6.79  
lines &                                         lines &                                        
equipment                                       equipment                                      
                                                                                               
Electricity        6         0        16.67     Electricity      7-12        5      7.92-13.57 
metering                                        metering                                       
equipment                                       equipment                                      
                                                                                               
Communication     10         3         9.7      Communication    5-14        5       6.79-19   
lines                                           lines &                                        
                                                equipment                                      
                                                                                               
Automation        4-8        0       12.5-25    Automation       4-12        5      7.92-23.75 
controls and                                    controls and                                   
instruments                                     instruments                                    
                                                                                               
Machinery &       10         3         9.7      Hydraulic        10-20       5       4.75-9.5  
equipment                                       machinery &                                    
                                                equipment                                      
                                                                                               
                                                Manufacture,     10-20       5       4.75-9.6  
                                                overhaul &                                     
                                                maintenance                                    
                                                equipment                                      
                                                                                               
Tools & other      9         0        11.11     Tools & other    5-14        5       6.79-19   
production                                      production                                     
equipment                                       equipment                                      
                                                                                               
Transportation   6-10       0-3     9.7-16.17   Transportation   6-12        5      7.92-15.83 
facilities                                      facilities                                     
                                                                                               
Non-production   6-18        0      5.39-16.67  Non-production   5-22        5       4.32-19   
equipment &                                     equipment &                                    
apparatus                                       apparatus                                      
                                                                                               
Buildings &      8-45        0      2.22-12.5   Buildings &      8-45        5      2.11-11.88 
structures                                      structures                                     
                                                                                                                                                                                              
II. Explanations by the Board for the reasonableness of the changes in accounting
estimates

The Board held the view that the current changes to the estimated useful lives
and estimated net salvage values of the fixed assets are made in view of the
current business environment and market conditions and with reference to the
standards of other companies in the industry. The current changes in accounting
estimates were made within the ranges of the disclosed depreciation lives of
the fixed assets and were consistent with the actual situation of the Company
and the relevant regulations. The accounting estimates after the change can
reflect the Company's financial position and operating results more accurately
and reliably.

III. Effect of the changes in accounting estimates on the Company

The changes in the estimated useful lives and estimated net salvage values of
the fixed assets are changes in accounting estimates and are treated according
to the prospective application method. Such changes do not have any impact on
the financial statements already disclosed by the Company.

Based on the scope of the existing consolidated statements, the changes in
accounting estimates are expected to reduce the Company's depreciation charges
by approximately RMB1.8 billion for 2010.

IV. Approval procedures

The matter was considered and approved at the thirty-fifth meeting of the sixth
session of the Board held on 29 April 2010. Both independent Directors and the
supervisory committee have delivered special opinions thereon.

V. Opinion of independent Directors

Independent Directors held the view that the Company made the changes in the
estimated useful lives and estimated net salvage values of the fixed assets
with reference to the standards of other companies in the same industry,
reflecting the principle of prudence under the Enterprise Accounting Standards.
The accounting estimates after the change can reflect the Company's financial
position and operating results more accurately. The consideration and approval
process was in compliance with the Articles of Association and the relevant
laws and regulations and the interests of small and medium shareholders were
not prejudiced.

VI. Opinion of the supervisory committee

The supervisory committee held the view that the current changes to the
estimated useful lives and estimated net salvage values of the fixed assets
were made in view of the actual situation of the Company and with reference to
the standards of other companies in the same industry. The current changes in
accounting estimates can reflect the Company's financial position and operating
results in a fairer manner, and provide more reliable and accurate accounting
information. The consideration and approval process was in compliance with the
relevant laws and regulations and the Articles of Association.

                                                          By Order of the Board
                                                                  Zhou Gang    
                                                         Secretary to the Board

Beijing, the PRC, 29 April 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