Coal currently generates about 45 percent of the country’s electricity. That number will decrease gradually during the next two decades, to about 43 percent in 2035, EIA predicts. Natural gas and renewables like wind and solar will be the “fastest-growing” fuels used to generate electricity in the coming decades, but they won't come close to surpassing coal.
By 2035, natural gas will be responsible for 25 percent of the country’s electricity, up from 23 percent, and renewables will be responsible for 14 percent of the nation’s electricity, up from 10 percent, EIA predicts.
For more on today’s EIA data, read this post on the country’s expected growth in greenhouse gas emissions.