Cumulative US installed onshore wind capacity exceeded 100 GW on a nameplate capacity basis as of the end of September 2019 and could reach 122 GW by end-2020, according to the US Energy Information Administration’s (EIA) Preliminary Monthly Electric Generator Inventory.
More than half of the country's wind capacity has been installed since the beginning of 2012. The oldest wind turbines still operating in the US came online as early as 1975.
As of the third quarter of 2019, 41 states had at least one installed wind turbine. Texas had the most capacity installed, at 26.9 GW, followed by Iowa, Oklahoma, and Kansas. These four states accounted for half of the total US installed wind capacity.
In the US, wind turbines tend to come online late in the year. Based on information reported in the Preliminary Monthly Electric Generator Inventory, EIA expects that an additional 7.2 GW of capacity will come online in December 2019. EIA also expects that another 14.3 GW of wind capacity will come online in 2020. If realised, the US would have about 122 GW of wind capacity by the end of next year.
The U.S. Energy Information Administration (EIA) provides a wide range of information and data products covering energy production, stocks, demand, imports, exports, and prices; and prepares analyses and special reports on topics of current interest.