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The total generating capacity is 8,980 MW. The total combined capacity of the Jinsha complex with the Three Gorges complex will be 103,203 MW. As of 2025, plans exist in the Democratic Republic of the Congo for the construction of a hydroelectric power station set to overtake the Three Gorges, [3] with an installed capacity of 39,000 MW.
Those power stations that are smaller than 1,000 MW, or those that are only at a planning/proposal stage may be found in regional lists, listed at the end of the page. The largest hydroelectric power station is the Three Gorges Dam in China, rated at 22,500 MW in total installed capacity.
Hydroelectric power stations continued to become larger throughout the 20th century. Hydropower was referred to as "white coal". [19] Hoover Dam's initial 1,345 MW power station was the world's largest hydroelectric power station in 1936; it was eclipsed by the 6,809 MW Grand Coulee Dam in 1942. [20]
The following page lists all pumped-storage hydroelectric power stations that are larger than 1,000 MW in installed generating capacity, which are currently operational or under construction. Those power stations that are smaller than 1,000 MW , and those that are decommissioned or only at a planning/proposal stage may be found in regional ...
The size of hydroelectric plants can vary from small plants called micro hydro, to large plants that supply power to a whole country. As of 2019, the five largest power stations in the world are conventional hydroelectric power stations with dams.
Inside the Robert-Bourassa generating station, in northern Quebec, the world's largest underground power station, with an installed capacity of 5,616 MW.. An underground power station is a type of hydroelectric power station constructed by excavating the major components (e.g. machine hall, penstocks, and tailrace) from rock, rather than the more common surface-based construction methods.
The Cahora-Bassa transmission project was a joint venture of the two electrical utilities, Electricity Supply Commission (ESCOM, as it was known prior to 1987), latterly Eskom, Johannesburg, South Africa and Hidroelectrica de Cahora Bassa (HCB), a firm owned 15% by the government of Portugal and 85% by Mozambique.
The following page is a list of power stations in the Democratic Republic of the Congo. As of December 2015, installed electric generation capacity totalled 2,442 megawatts, but only half that capacity is functioning.