The United States has an installed summer electricity generation capacity of 1,084.37 GW in 2018, up 11.91 GW from 2017. The US electricity generation was in 2018. The US also imported and exported , for a total of of electrical energy use in the US. Electrical energy generated from coal was (27.22%); natural and other gases, 1,482.20 TWh (35.11%); nuclear, (19.11%); hydro, (6.93%); Renewables (other than hydro), (9.81%); imports less exports, (1.05%); petroleum, (0.60%); and miscellaneous (including pumped storage), (0.17%). The US's renewable sources (hydro reported separately) are wind, (6.46%); wood, (0.97%); other biomass, (0.49%); geothermal, (0.38%) and solar, (1.51%). Small-scale solar is estimated to have produced an additional . Natural gas electricity generation exceeded generation from coal for the first time in 2016 and continued its expansion in 2018.