The first generating unit of the Shuangjiangkou Hydropower Station on the Dadu River, home to the world's tallest dam, was successfully connected to the grid on June 26, providing further support for the clean energy supply system in southwest China and the country's dual carbon goals.
Shuangjiangkou Hydropower Station
The Shuangjiangkou Hydropower Station is a national key energy project located in Jinchuan County, Sichuan Province, southwestern China. It serves as the controlling reservoir and leading hydropower station on the upper reaches of the Dadu River. Designed primarily for power generation with additional flood control functions, the station has a total installed capacity of 2 million kilowatts and an average annual power output of 7.7 billion kilowatt-hours.
The Shuangjiangkou dam is a gravel-core rockfill structure with a maximum height of 315 meters, making it the tallest dam in the world. The total fill volume exceeds 46 million cubic meters. The project has now completed the second phase of reservoir impoundment, with all performance indicators fully meeting the requirements for power generation. The first generating unit has been successfully connected to the grid and is operating in a stable, safe and controllable condition.
Reservoir area of the Shuangjiangkou Hydropower Station
A representative from CHN Energy's relevant department said that the Shuangjiangkou Reservoir has annual regulating capacity, with a total storage capacity of 2.9 billion cubic meters. Once fully operational, the station will increase the annual power generation of downstream cascade hydropower stations by approximately 6.6 billion kilowatt-hours. It will also enhance peak shaving and frequency regulation capabilities of the Sichuan power grid, optimize the regional power supply mix, strengthen overall flood control capacity across the Dadu River Basin, and serve as a vital flood protection barrier for the upper reaches of the Yangtze River.
With the commissioning of the Shuangjiangkou Hydropower Station, CHN Energy now has nearly 15 million kilowatts of installed hydropower and renewable energy capacity in the Dadu River Basin. The Group supplies more than 60 billion kilowatt-hours of clean electricity annually, equivalent to saving approximately 17 million tons of coal and reducing carbon dioxide emissions by about 46 million tons each year, providing strong support for the economic development of the Chengdu-Chongqing region.
