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Dam, that’s big! World’s top hydro power stations

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Low cost, reliable and renewable, hydroelectric power has become the world's largest source of renewable energy, accounting for a fifth of global electricity, according to the World Bank.

As our energy needs become more pressing, hydro-power will become increasingly important. Here, Energy Future takes a look at eight of the world's biggest and most spectacular hydro installations.

By Anmar Frangoul, special to

Darrell Wyatt | Moment Open | Getty Images