6. Grand Coulee Dam
Power: 6.81 GW
Country: the USA
The Grand Coulee Dam would be the construction that produces the most electricity in the US and in that respect, it is considered to be the largest hydroelectric dam in the USA. Built over the Columbia River in Washington state, it does the magic with its 24 generators. Basically, the plant is a major power source for the surrounding region in the U.S. Pacific Northwest.