With a nameplate capacity of 1,550MW, Alta Wind Energy Center is by far the biggest wind farm in the US. Alta was established in 2010 and had a construction cost of over.
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The structure at North Dakota's Garrison Dam houses five turbines – 'Francis' turbines that turn at a rate of 90 revolutions per minute (rpm). The water takes on energy as it flows down the penstock and is carried with force to the turbine.
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Solar power includes solar farms as well as local distributed generation, mostly on rooftops and increasingly from community solar arrays. In 2025, utility-scale solar power generated 295. 7 terawatt-hours (TWh) in the United States.
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On this page you'll find resources to learn what solar energy is; how you, your business, or your community can go solar; and find resources for every step of the way.
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