AWEA Press Release, Mar. 6, 2017.
http://www.awea.org/MediaCenter/pressrelease.aspx?ItemNumber=9999

"Iowa, South Dakota, Kansas, Oklahoma and North Dakota all sourced more than 20 percent of their electricity generation from wind power during 2016, according to new data from the U.S. Energy Information Administration (EIA). It shows wind supplied over 5.5 percent of electricity nationwide, up from 4.7 percent in 2015."