Strong rains boost hydropower generation in most regions of China Production & Sales,  Hydropower 2020-07-22 11:56:35

Abundant rainfalls in South and East China since June have quickly boosted hydropower generation in many regions of the country, which, however, added more pressure for coal-fired power generation.

At 17:00 of June 21, water inflows of Three Gorges reservoir reached more than 30,000 cubic meters per second, and a total 34 power generating units of Three Gorges station all started operating, with capacity combined at 20.47 GW and daily output nearly 400 GWh.

Three Gorges, Gezhou Dam, Xiluodu and Xiangjiaba power stations had a total 82 power units operating at 10:00 of June 23, with capacity combined at 39.53 GW.

Thanks to plentiful rains, China logged a robust yearly rise of 6.9% in hydropower output to 121.5 TWh in June, compared with a 16.5% slump a month ago. It also soared 41.61% from May, showed data from the National Bureau of Statistics.

Top hydropower provinces of Sichuan, Yunnan, Hubei, Guizhou and Guangxi all registered monthly jumps of over 40% in generation in June, and a total 22 provinces posted growth.

Output of Sichuan, Yunnan, Hubei, Guizhou, Guangxi, Hunan, Qinghai and Gansu totaled 102.64 TWh in June, contributing 84.48% of China's total hydropower generation.

Sichuan generated 32.48 TWh of hydropower last month, rising 21.1% year on year and jumping 40.18% from May. Output of Yunnan increased 14.7% YoY and soared 56.06% MoM to 25.64 TWh.

Hydropower output of Guizhou and Guangxi came in at 8.35 TWh and 5.91 TWh, up by 1.1% and 4.1% year on year.

Shandong province saw the sharpest MoM decline of 66.67% in hydropower output to 30 GWh.

GD Power Development Co., Ltd, one of China's top five coal-fired power groups, also reported yearly increase in hydropower output while its thermal power output declined in the first half year.

The company's hydropower output grew 2.47% year on year to 21.64 TWh, while thermal power output declined 4.46% to 136.47 TWh.

According to Changjiang Water Resources Commission of the Ministry of Water Resources, rainfalls along the Yangtze River have been 40% higher than previous years since the start of the rainy season, with rainfalls in the middle and downstream section of the river 60% higher.

Hydropower generation is expected to maintain the upward momentum in July.

(Writing by Tammy Yang  Editing by Jessie Jia)
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