Major energy sources and percent share of total U.S. electricity generation in 2015:1
Coal = 33%
Natural gas = 33%
Nuclear = 20%
Hydropower = 6%
Other renewables = 7%
Biomass = 1.6%
Geothermal = 0.4%
Solar = 0.6%
Wind = 4.7%
Petroleum = 1%
Other gases = <1%
https://www.eia.gov/tools/faqs/faq.cfm?id=427&t=3
67% of electricity is NOT generated with coal fired plants.