The rapid expansion of wind and solar power in the U.S. can often obscure another reality: the country still leans heavily on fossil fuels.

Fossil fuels have been the dominant source for energy consumption for more than a century, and in 2016 they accounted for 81 percent of all energy use -- the lowest percent of fossil fuel use in the past 100 years, according to the U.S. Department of Energy.

Petroleum remains the fuel used most in homes and businesses, and petroleum consumption has increased every year since 2012. 

RELATED: On a mission to save coal, Perry bucks status quo 

While renewables, mostly wind and solar, accounted for more than 10 percent of U.S. energy consumption, natural gas use as risen in the past decade. In 2016, natural gas use was about twice that of coal, according to the Energy Department.

Coal consumption, meanwhile, has plummeted nearly 40 percent since 2005.