![]() In recent years, China has accounted for about half of global growth in renewable energy. But it is undergoing a renaissance in countries where wind and solar power are also growing, helping allay concerns about weather-related dips in renewable energy output. Later, when electricity demand spikes, water is released to the lower reservoir through a turbine, generating power. When electricity generated from nearby power plants exceeds demand, it’s used to pump water uphill, essentially filling the upper reservoir as a battery. ![]() These systems involve two reservoirs: one on top of a hill and another at the bottom. ![]() Instead, a technology called pumped storage is rapidly expanding. ![]() New research released Tuesday by Global Energy Monitor reveals a transformation underway in hydroelectric projects - using the same gravitational qualities of water, but typically without building large, traditional dams like the Hoover in the American West or Three Gorges in China. For a century, hydroelectric power has been synonymous with gigantic dams - feats of engineering that provide renewable energy but displace communities and destroy ecosystems. ![]()
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