1. Wind Industry Fourth Quarter Market Report 2013;American Wind Energy Association (AWEA), U.S,2014
2. U.S. Department of Energy, Office of Scientific and Technical Information, Oak Ridge, TN, pps 1-248, Available from http://www.osti.gov/bridge, viewed September 25, 2015
3. How much of our electricity is generated from renewable energy?;U.S. Department of Energy;Energy Effic. Renew. Energy,2013
4. Installed Wind Power Capacity in North America to Double by 2017;Pike Research,2011
5. Poll: Americans overwhelmingly support alternative energy;Handley,2013