Hydroelectricity is the most prevalent renewable source in 19 states; wind in 16

Hydroelectricity represented the largest share of electricity generation among renewable sources in 28 states in 2007 but retained that status in only 19 states in 2017 as wind and solar became more common. Wind was the most prevalent renewable electricity generation source in 16 states in 2017, and solar was the most prevalent renewable generation source in 7 states. More »