1/29/2024 0 Comments Solar battery backupChina now leads the world in wind, solar and hydroelectric power capacity. And it is already by far the world’s biggest user of coal, a particularly dirty fuel.īut even as China doubles down on coal, it is reducing the overall proportion of power it derives from it. China has stopped financing coal projects abroad, but at home last year it approved the building of more coal plants than ever before. Some of that insurance comes from continued growth in fossil fuels, especially coal, which China has in abundance.Ĭhina’s pumped storage strategy won’t directly equate to a reduction in coal use. According to official documents, China will roll out more wind and solar capacity each year between now and 2030 than Germany currently has in total.Īs renewables contribute more and more to China’s grid, the country is seeking ways to ensure that fluctuations in wind and solar output don’t leave the grid in the lurch. 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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