Adjustments In On-grid Tariffs

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong KongLimited take no responsibility for the contents of thisannouncement, make norepresentation as to its accuracy or completeness and expressly disclaim anyliability whatsoever for any loss howsoever arising from or in reliance uponthe whole or any part of the contents of thisannouncement. Datang International Power Generation Co., Ltd. (a sino-foreign joint stock limited company incorporated in the People's Republic of China)(Stock Code: 00991) OVERSEAS REGULATORY ANNOUNCEMENT AND INSIDE INFORMATION ANNOUNCEMENT ANNOUNCEMENT ON ADJUSTMENTS IN ON-GRID TARIFFS This announcement is made by Datang International Power Generation Co., Ltd(the "Company") pursuant to Part XIVA of the Securities and Futures Ordinance(Cap 571 of the Laws of Hong Kong) and Rules 13.09(2)(a) and 13.10B of theRules Governing the Listing of Securities on The Stock Exchange of Hong KongLimited. The Company announces that it recently received the "NDRC's Notice on FurtherResolving the Conflicts in Environmental Protection Tariffs" (NDRC Prices[2014] No. 1908) (the "Notice") issued by National Development and ReformCommission ("NDRC"). In order to further resolve environmental protectiontariffs conflicts such as denitrification and dedusting of coal-fired powergeneration enterprises, as well to equalise tariffs in some industrial andcommercial areas, the Notice was issued to make appropriate adjustments on thelevel of the on-grid electricity tariffs. According to the Notice, the details of downward adjustment on on-grid tariffof the Company's major coal-fired power generating units are as follows: Regional/Cross-regional power transmission Downward adjustment (RMB/kWh(tax-inclusive)) Tianjin 0.0054 Hebei Province (Northern Grid) 0.0087 Regional/Cross-regional power transmission Downward adjustment (RMB/kWh (tax-inclusive)) Shanxi Province 0.0115 Shanxi Province Transmitted to Northern China 0.0070 Western Area of Inner Mongolia Autonomous 0.0120Region Western Area of Inner Mongolia Autonomous 0.0070Region Transmitted to Northern China Liaoning Province 0.0098 Gansu Province 0.0040 Ningxia Hui Autonomous Region 0.0090 Fujian Province 0.0045 Jiangxi Province 0.0317 Guangdong Province 0.0120 Yunnan Province 0.0000 Jiangsu Province 0.0110 Zhejiang Province 0.0110 Chongqing 0.0068 The tariff adjustments abovementioned came into effect on 1 September 2014.After the current on-grid tariff adjustments, the weighted average on-gridtariffs for the installed capacity of the Company's coal-fired power generatingunits will be decreased by approximately RMB0.00751/kWh (tax-inclusive). By Order of the Board Zhou Gang Secretary to the Board Beijing, the PRC, 29 September 2014 As at the date of this announcement, the Directors of the Company are: Chen Jinhang, Hu Shengmu, Wu Jing, Fang Qinghai, 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