Large wind farms have been around for more than 35 years, but only recently has the cost of wind power declined enough to support significant capacity. In fact, wind has become the cheapest energy source in many regions of the country. Since 2008, the average price of wind energy has dropped by 75 percent, reaching a record low in 2017. As the technology becomes better and cheaper, more utilities are installing wind farms and purchasing more wind power. Nationwide wind capacity grew from 25 gigawatts (GW) in 2008 to more than 89 GW in 2017—enough to power more than 25 million U.S. homes.2


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Electric Vehicles