This list includes power stations that are larger than 1,000 MW in maximum net capacity, and are operational or under construction.
The largest hydroelectric power station is the Three Gorges Dam in China, rated at 22,500 MW in total installed capacity.
Construction of this dam commenced in 1994, and was completed in 2012, nearly two decades after it started.
The currently planned Grand Inga Dam would be nearly twice the size of the Three Gorges Dam at 39,000 MW, surpassing all power-generating facilities once it passes the current-highest 22,500 MW mark.
The following two lists rank the 200 largest conventional hydroelectric power stations that have an installed electric power generation capacity of at least 1,000 MW and also 17 plants under construction with planned capacity of at least 1,000 MW.