But, in 2013, only 4.13% of electricity was generated by wind energy resources
and a mere 0.23% of electricity was generated by solar resources.
2013 ELECTRICITY GENERATION IN THE U.S. BY ENERGY SOURCE 
The National Renewable Energy Laboratory recently concluded that renewable energy technologies that are currently available today, in combination with a more flexible electric grid, could supply 80% of US electricity demand in the year 2050.
