Italy
The Mambilla Hydroelectric Power Station is a 3,050 MW (4,090,000 hp) hydroelectric power project under development in Nigeria. When completed, it will be the largest power-generating installation in the country, and one of the largest hydroelectric power stations in Africa.
Listen to the audio guide for Mambilla Hydroelectric Power Station Free on WIP — starts by itself when you arrive, even with the screen off