Domestic Business

CYPC has four large hydropower stations (Three Gorges, Gezhouba, Xiluodu and Xiangjiaba) along the trunk stream of the Yangtze River, with the total installed capacity of 45,495 MW, and with the annual power generation capacity of about 190 TWh. By "unified dispatching of four reservoirs (Three Gorges, Gezhouba, Xiluodu and Xiangjiaba)", the benefits of unified dispatching of cascade hydropower stations can be fully realized, which will contribute to the improvement of water energy utilization, production efficiency, reduction of production and operation cost. This will in turn consolidate the leading position of CYPC in the global hydropower industry and lay a solid foundation for the efficient implementation of future development strategies.

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Gezhouba Hydropower Station

Gezhouba Hydropower Station, the first dam along the Yangtze River, is located at the outlet of Xiling Gorge at the middle trunk stream of the Yangtze River. It is the re-regulating reservoir of the Three Gorges Hydropower Station. The foundation was laid at the beginning of the 1970s and completed at the end of the 1980s. Gezhouba Hydropower Station is the hub power station and is an important power supply point for the central China areas.

Gezhouba hydro-complex is composed of water retaining structure, sluice gate, silt-releasing sluice, powerhouse and navigation structure. The dam is 2,606.5m long in total, with the dam crest elevation of 70m. Sediment and flood discharging structures are composed of Dajiang 9-opening silt-releasing sluice, Sanjiang 6-opening silt-releasing sluice and Erjiang 27-opening sluice gate. The navigation structures are composed of No. 1, No. 2 and No. 3 ship locks. No. 1 and No. 2 ship locks are of the same size and allow fleet of 10,000t to pass, while No. 3 ship lock allows fleet below 3,000t to pass.

The normal operation water level of Gezhouba hydro-complex is 66.0m, with the reservoir capacity (reservoir capacity between the two dams of Three Gorges-Gezhouba Cascade hydro-complex) of 711 million m³ and with the minimum operation water level of 62.0m.

The designed installed capacity of Gezhouba Hydropower Station is 2,735 MW , with the guaranteed output of 1,040 MW and annual average generating output of 15.7 TWh. 7 units are installed for Erjiang Hydropower Station (2*170 MW and 5*125 MW); 14 units are installed for Dajiang Hydropower Station, with the capacity of a single unit of 125 MW; 1 unit is installed for the power supply station, with the capacity of a single unit of 20 MW.

Completed in 1988

The total installed capacity


Annual average generating output


By December 31, 2018

Accumulative powergeneration had exceeded



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