United States wind energy policy
There are currently 5,600 MW of projects under construction in 2011. The U.S. Department of Energy's 2011 report "20% Wind Energy by 2030" envisioned that wind power could supply 20% of all U.S. electricity, which included a contribution of 4% from offshore wind power.
Wind power in Iowa
Making up more than 35% of the state's generated electricity, Iowa is a leading U.S. state in wind power generation.
The development of wind power in Iowa began with a state law, enacted in 1983, requiring investor owned utilities purchase 105 MW of power from wind generation. In 2016, over 20 billion kWh of electrical energy was generated by wind power, representing 36.6% of in state electricity production. As of February 2016, Iowa had over 6,974 megawatts (MW) of capacity.