Wind expected to surpass hydro as largest renewable electricity generation source – Today in Energy – U.S. Energy Information Administration (EIA)
"As one of the first technologies used to generate electricity, hydroelectric power has historically provided the largest share of renewable electricity generation in the United States. However, this year EIA expects wind power to surpass hydroelectricity, based on forecasts in the latest Short-Term Energy Outlook. Different factors lead to uncertainty about the forecast level of electricity generation from each energy source."