Wind was the biggest renewable power source in 16 states while solar was the biggest in seven states , according to the US Energy Information Administration ( EIA ) . Hydroelectricity remains the US 's largest renewable power source overall , accounting for 7 % of national electricity generation last year . Hydro power was the largest source of renewable electricity generation in 19 US states last year , down from 28 just 10 years ago , the EIA said .
Wind was the biggest renewable power source in 16 states while solar was the biggest in seven states, according to the US Energy Information Administration (EIA). Hydroelectricity remains the US's largest renewable power source overall, accounting for 7% of national electricity generation last year. Hydro power was the largest source of renewable electricity generation in 19 US states last year, down from 28 just 10 years ago, the EIA said.