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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.
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 Itaipu Dam opened in 1984 in South America as the largest, producing 14 GW , but was surpassed in 2008 by the Three Gorges Dam in China at 22.5 GW .
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.
The Churchill Falls Generating Station is a hydroelectric underground power station in Labrador. At 5,428 MW, it is the sixteenth largest in the world, and the second-largest in Canada , after the Robert-Bourassa generating station in northwestern Quebec .
The two plants taken together account for more than 20% of Hydro-Québec's total installed capacity of 36,810 MW in 2009. [1] It is Canada's largest hydroelectric power station, ranks in 15th place on the list of largest hydroelectric power stations and is the world's largest underground power station. [3]
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.