Dams are the most common association with hydroelectric power. As water flows through a dam's turbines, it produces electricity or pumped-storage hydropower. Run-of-river hydropower is another form that uses a channel to funnel the water through instead of a dam.
The most commonly-used renewable power source globally is hydropower, claiming over 54% of the world's renewable power generation capacity in 2018. China is home to a facility named the Three Gorges, the biggest hydropower plant in the world. Brazil, Canada, the United States, and Russia also boast some of the world's largest hydropower installations.