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What portion of U.S. energy consumption is provided by wind energy?

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During 2018, wind energy provided 2.5% of U.S. energy consumption. Because wind speeds fluctuate and are sometimes not strong enough to drive turbines for days at a time, most wind power capacity must be backed up by other energy sources to generate electricity when the wind doesn't blow. As the amount of wind capacity rises in a given region, so do the challenges and costs of backing up its unreliable energy output. These scientific realities limit wind production in the U.S. and throughout the world.

DocumentationU.S. Energy SuppliesWind Energy Facts

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