“By electrifying everything, just doing that, the power demand will go down because of the efficiency of electricity,” says Jacobson. Averaged across sectors, there’s a 23 percent reduction in energy demand just by switching to electricity. And when that electricity comes directly from renewable sources like solar and wind instead of coal, the savings keep getting better. According to Jacobson, 12.6 percent of global electric energy use goes toward mining, refining, and transporting fossil fuels (and uranium for nuclear power). Electrification plus a switch to renewables leads to a 36 percent reduction in demand—with no significant change in quality of life.