The state of South Dakota led the U.S. in wind power generation with 22.3% of the state's electricity generation coming from wind in 2011. At the end of 2011, wind power in South Dakota had 785 megawatts (MW) of installed capacity. South Dakota is one of the country's windiest states, and has the potential of installing 882,000 MW, and generating 2,902 billion kWh/year. Just as in Texas, the construction of new wind farms is transmission line limited. There is a proposed "Green Power Express Project", which will reduce this limitation.
South Dakota's first wind farm was the South Dakota Wind Energy Center, built in 2003.