Datang International Power Generation : OVERSEAS REGULATORY ANNOUNCEMENT ANNOUNCEMENT ON POWER GENERATION FOR THE FIRST QUARTER OF 2021

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.

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

(Stock Code: 00991)

OVERSEAS REGULATORY ANNOUNCEMENT

ANNOUNCEMENT ON POWER GENERATION

FOR THE FIRST QUARTER OF 2021

SPECIAL NOTICE

The board of directors and all 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 13.10B of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited.

Datang International Power Generation Co., Ltd. (the "Company") announces that, according to the Company's preliminary statistics, as of 31 March 2021, the total power generation of the Company and its subsidiaries amounted to approximately 62.8699 billion kWh, representing an increase of approximately 10.61% on a year-on-year basis, and total on-grid power generation amounted to approximately 59.1155 billion kWh, representing an increase of approximately 10.93% on a year-on- year basis.

The major reasons for the increase in power generation of the Company are as follows:

1. The year-on-year increase of the national overall power consumption in the first quarter of 2021; and
2. The year-on-year increase in the number of new power generating units in parts of the areas where the Company is located.

As of 31 March 2021, the average on-grid tariff of the Company was RMB393.23 per MWh (inclusive of tax).

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Details of the power generation of the Company and its subsidiaries are set out as below:

					On-grid
			Power		power
			generation		generation
			for the first		for the first
			quarter of		quarter of
			2021		2021
Area	Category	Company name	(billion kWh)	Growth	(billion kWh)	Growth
Beijing,	Thermal Power	Gao Jing Thermal Power Plant	1.7780	11.30%	1.7366	11.40%
Tianjin &	(Gas-fired)
Tangshan
Thermal Power	Dou He Power Plant	0.8272	-22.35%	0.7403	-23.35%
	Thermal Power	Xia Hua Yuan Power Plant	0.3593	1.53%	0.3277	1.46%
	Thermal Power	Zhang Jia Kou Power Plant	2.4782	7.74%	2.2494	7.95%
	Thermal Power,	Tianjin Datang International Panshan Power	1.2199	22.99%	1.1337	23.19%
	Photovoltaic	Generation Company Limited
	Power
	Thermal Power	Inner Mongolia Datang International Tuoketuo	3.7766	27.83%	3.5197	27.85%
		Power Generation Company Limited
	Thermal Power	Inner Mongolia Datang International Tuoketuo	1.9986	-10.48%	1.8770	-11.01%
		No. 2 Power Generation Company Limited
	Thermal Power	Hebei Datang International Tangshan Thermal	0.8154	1.34%	0.7499	1.34%
		Power Company Limited
	Thermal Power	Shanxi Datang International Shentou Power	0.9437	13.43%	0.8664	13.40%
		Generation Company Limited
	Thermal Power	Hebei Datang International Wangtan Power	1.3494	14.89%	1.2675	15.45%
		Generation Company Limited
	Thermal Power	Hebei Datang International Fengrun Thermal	0.8388	0.84%	0.7658	0.79%
		Power Company Limited
	Thermal Power	Hebei Datang International Zhangjiakou Thermal	0.8792	-1.27%	0.8179	-1.53%
		Power Generation Company Limited
	Thermal Power	Hebei Datang International Qian'an Thermal	0.3392	-0.96%	0.3078	-0.48%
		Power Company Limited
	Wind Power,	Hebei Datang International Renewable Power	0.6198	29.15%	0.6004	28.57%
	Photovoltaic	Company Limited
	Power
	Thermal Power	Hebei Datang International Tangshan Beijiao	0.8567	73.11%	0.7992	74.61%
		Thermal Power Company Limited

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					On-grid
			Power		power
			generation		generation
			for the first		for the first
			quarter of		quarter of
			2021		2021
Area	Category	Company name	(billion kWh)	Growth	(billion kWh)	Growth
Shanxi	Thermal Power	Shanxi Datang International Yungang Thermal	1.5584	0.41%	1.4064	0.14%
		Power Company Limited
	Thermal Power	Shanxi Datang International Linfen Thermal	0.8265	6.87%	0.7600	6.74%
		Power Company Limited
	Wind Power	Shanxi Datang International Zuoyun Wind Power	0.0744	75.06%	0.0737	75.48%
		Company Limited
	Wind Power	Shanxi Datang International Yingxian Wind	0.0342	12.87%	0.0338	12.67%
		Power Company Limited
Guangdong	Thermal Power	Guangdong Datang International Chaozhou Power	3.2994	49.51%	3.1374	49.51%
		Generation Company Limited
	Thermal Power	Shenzhen Datang Baochang Gas Power	0.1721	58.18%	0.1680	58.34%
	(Gas-fired)	Generation Company Limited
	Thermal Power	Guangdong Datang International Zhaoqing	0.6727	-1.87%	0.6601	-1.90%
	(Gas-fired)	Thermal Power Company Limited
	Thermal Power	Guangdong Datang International Leizhou Power	1.7488	81.69%	1.6698	82.13%
		Generation Company Limited
Jiangsu	Thermal Power,	Jiangsu Datang International Lvsigang Power	2.6960	18.44%	2.5276	18.10%
	Photovoltaic	Generation Company Limited
	Power
	Thermal Power	Jiangsu Datang International Jintan Thermal	0.6855	-20.18%	0.6700	-20.37%
	(Gas-fired)	Power Company Limited
	Thermal Power	Jiangsu Datang International Rugao Thermal	0.0250	49.70%	0.0193	47.33%
		Power Company Limited
Fujian	Thermal Power	Fujian Datang International Ningde Power	2.8640	15.43%	2.7145	15.68%
		Generation Company Limited
	Wind Power	Fujian Datang International Renewable Power	0.0948	11.40%	0.0923	10.94%
		Company Limited

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					On-grid
			Power		power
			generation		generation
			for the first		for the first
			quarter of		quarter of
			2021		2021
Area	Category	Company name	(billion kWh)	Growth	(billion kWh)	Growth
Zhejiang	Thermal Power	Zhejiang Datang Wushashan Power Generation	2.7078	48.08%	2.5723	48.43%
		Company Limited
	Thermal Power	Zhejiang Datang International Shaoxing Jiangbin	0.2739	-6.07%	0.2681	-6.19%
	(Gas-fired),	Thermal Power Company Limited
	Photovoltaic
	Power
	Thermal Power	Zhejiang Datang International Jiangshan Xincheng	0.0843	257.20%	0.0824	256.71%
	(Gas-fired),	Thermal Power Company Limited
	Photovoltaic
	Power
	Wind Power,	Zhejiang Datang International Renewable Power	0.0294	-0.34%	0.0285	0.71%
	Photovoltaic	Company Limited
	Power
	Photovoltaic	Wencheng Datang Renewable Power Company	0.0059	/	0.0059	/
	Power	Limited
Ningxia	Wind Power,	Ningxia Datang International Qingtongxia Wind	0.0652	42.36%	0.0642	46.91%
	Photovoltaic	Power Generation Company Limited
	Power
	Wind Power,	Ningxia Datang International Hongsibao New	0.2192	276.63%	0.2149	290.02%
	Photovoltaic	Energy Company Limited
	Power
Liaoning	Thermal Power	Liaoning Datang International Jinzhou Thermal	0.6954	5.36%	0.6219	5.82%
		Power Company Limited
	Wind Power,	Liaoning Datang International Renewable Power	0.6825	38.55%	0.6742	38.67%
	Photovoltaic	Company Limited
	Power
	Thermal Power	Liaoning Datang International Shendong Thermal	0.7664	13.86%	0.7050	13.40%
		Power Company Limited
	Thermal Power	Liaoning Datang International Huludao Thermal	0.7757	194.05%	0.7208	198.72%
		Power Company Limited

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					On-grid
			Power		power
			generation		generation
			for the first		for the first
			quarter of		quarter of
			2021		2021
Area	Category	Company name	(billion kWh)	Growth	(billion kWh)	Growth
Yunnan	Hydropower,	Yunnan Datang International Electric Power	0.7077	-58.40%	0.7001	-55.79%
	Photovoltaic	Generation Company Limited
	Power
Jiangxi	Thermal Power	Jiangxi Datang International Fuzhou Power	3.1084	42.16%	2.9766	42.28%
		Generation Company Limited
	Thermal Power	Jiangxi Datang International Xinyu Power	0.1049	7.92%	0.0940	6.58%
		Generation Company Limited
	Wind Power,	Jiangxi Datang International Renewable Power	0.2626	14.62%	0.2562	14.73%
	Photovoltaic	Company Limited
	Power
Inner Mongolia	Hydropower	Inner Mongolia Datang International Haibowan	0.1332	-1.84%	0.1320	-1.71%
		Water Conservancy Hub Development Company
		Limited
	Wind Power,	Inner Mongolia Datang International Renewable	0.2719	66.91%	0.2618	66.01%
	Photovoltaic	Power Company Limited
	Power
Chongqing	Thermal Power	Chongqing Datang International Shizhu Power	0.5978	9.39%	0.5585	9.53%
		Generation Company Limited
	Hydropower	Chongqing Datang International Pengshui	1.5703	8.80%	1.5660	8.82%
		Hydropower Development Company Limited
	Hydropower	Chongqing Datang International Wulong	0.6982	2.14%	0.6922	2.08%
		Hydropower Development Company Limited
	Hydropower	Yuneng (Group) Company Limited	0.2091	-23.66%	0.2072	-23.80%
	Wind Power	Chongqing Datang International Wulong Xingshun	0.0191	8.52%	0.0184	8.24%
		Wind Power Company Limited
Sichuan	Hydropower	Sichuan Jinkang Electric Power Development	0.0703	-36.61%	0.0681	-36.94%
		Company Limited
	Hydropower	Sichuan Datang International Ganzi Hydropower	1.3761	3.83%	1.3648	3.92%
		Development Company Limited
	Photovoltaic	Sichuan Datang International New Energy Co.,	0.0232	8.41%	0.0227	8.61%
	Power	Ltd.

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					On-grid
			Power		power
			generation		generation
			for the first		for the first
			quarter of		quarter of
			2021		2021
Area	Category	Company name	(billion kWh)	Growth	(billion kWh)	Growth
Qinghai	Hydropower	Qinghai Datang International Zhiganglaka	0.1421	-5.01%	0.1398	-5.22%
		Hydropower Development Company Limited
	Photovoltaic	Qinghai Datang International Gonghe Photovoltaic	0.0283	0.71%	0.0278	-0.71%
	Power	Power Generation Company Limited
	Photovoltaic	Qinghai Datang International Golmud Photovoltaic	0.0457	16.28%	0.0450	15.68%
	Power	Power Generation Company Limited
	Wind Power	Datang International Mangya Renewable Energy	0.0330	11.49%	0.0317	11.23%
		Co., Ltd.
	Wind Power	Datang International Dachaidan Renewable Power	0.0285	/	0.0278	/
		Company Limited
	Wind Power	Datang International Dulan Renewable Power	0.0183	/	0.0179	/
		Company Limited
Anhui	Thermal Power	Datang Huainan Luohe Power Plant	0.3126	341.53%	0.2867	329.19%
	Thermal Power	Datang Huaibei Power Plant	1.2446	-23.11%	1.1715	-24.49%
	Hydropower	Datang Chencun Hydropower Plant	0.0764	92.44%	0.0754	92.84%
	Thermal Power	Anhui Huainan Luoneng Power Generation Co.,	2.0878	26.07%	1.9577	23.27%
		Ltd.
	Thermal Power	Ma'anshan Dangtu Power Generation Co., Ltd.	1.4987	0.88%	1.4171	-0.67%
	Thermal Power	Huainan Tianjia'an Power Plant of Anhui Electric	0.6360	-18.79%	0.5896	-20.37%
		Power Co., Ltd.
	Wind Power	Huainan Datang Wind Power Generation Co., Ltd.	0.0320	/	0.0317	/
	Biomass	Datang Anqing Biomass Power Generation Co.,	/	/	/	/
		Ltd.

- 6 -

					On-grid
			Power		power
			generation		generation
			for the first		for the first
			quarter of		quarter of
			2021		2021
Area	Category	Company name	(billion kWh)	Growth	(billion kWh)	Growth
Hebei	Thermal Power	Matou Thermal Power Branch of Datang Hebei	0.8666	-3.40%	0.7926	-3.16%
		Power Generation Co., Ltd.
	Thermal Power	Datang Baoding Thermal Power Plant	0.6081	-3.26%	0.5196	-2.18%
	Hydropower,	Datang Wangkuai Hydropower Plant	0.0069	13.11%	0.0066	8.20%
	Photovoltaic
	Power
	Wind Power	Datang Hebei Renewable Energy (Zhangbei) Co.,	0.0955	37.02%	0.0945	37.35%
		Ltd.
	Thermal Power	Datang Qingyuan Thermal Power Co., Ltd.	0.9552	3.49%	0.8653	4.03%
	Thermal Power	Datang Wu'an Power Generation Co., Ltd.	0.6546	18.82%	0.6031	19.35%
	Photovoltaic	Datang Wuyuan Renewable Energy Co., Ltd.	0.0072	-4.00%	0.0070	-4.11%
	Power
	Wind Power,	Datang Wulate Houqi Renewable Energy Co.,	0.0427	56.41%	0.0410	56.49%
	Photovoltaic	Ltd.
	Power
Heilongjiang	Thermal Power	Datang Qitaihe Power Generation Company	1.4828	4.01%	1.3694	3.28%
	Thermal Power	Datang Jixi Thermal Power Co., Ltd.	0.2445	-6.11%	0.2154	-7.43%
	Thermal Power	Datang Shuangyashan Thermal Power Co., Ltd.	0.4231	-8.28%	0.3785	-8.64%
	Thermal Power	Datang Jixi Second Thermal Power Co., Ltd.	0.5605	-9.63%	0.5125	-10.36%
	Thermal Power	Harbin First Thermal Power Plant of Datang	0.6393	-11.18%	0.5606	12.05%
		Heilongjiang Power Generation Co., Ltd.
	Hydropower,	Datang Heilongjiang Renewable Power	0.1125	69.94%	0.1105	69.48%
	Wind Power	Development Co., Ltd.
	Thermal Power	Datang Suihua Power Generation Co., Ltd.	0.6965	-11.70%	0.6502	-12.22%
Total			62.8699	10.61%	59.1155	10.93%

- 7 -

By order of the Board

Jiang Jinming

Company Secretary

Beijing, the PRC, 23 April 2021

As at the date of this announcement, the directors of the Company are:

Chen Feihu, Qu Bo, Liang Yongpan, Ying Xuejun, Zhu Shaowen, Cao Xin, Zhao Xianguo, Jin Shengxiang, Sun Yongxing, Liu Jizhen*, Luo Zhongwei*, Liu Huangsong*, Jiang Fuxiu*, Niu Dongxiao*

• Independent non-executive directors

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