U.S. 80% of the U.S. by 2050 amount of electricity renewable technologies one 2012 NREL study 80% of the U.S. by 2050 Union of Concerned Scientists hope we can get to 80 percent by 2050 Renewable Electricity Futures Study 80% of its energy generation by 2050 80% of power from renewable energy sources Renewable Electricity Future’s Study Renewable Electricity Futures Study hope that the growth continues and there is a reason to believe it is, 80 percent the future of energy