US electricity from hydro, 2001 to 2025
US electricity from hydro stood at 247,023 in 2025, up 1.7% on the previous period.
United States generated 247,023 gigawatt hours of electricity from hydro in 2025, up 1.7 percent on the year before. The window runs from 2001, when the figure was 216,961.
How it is measured
The series counts net generation, electricity actually delivered to the grid, from utility-scale plants of one megawatt and larger, across electric utilities, independent producers, and industrial generators. It is collected on the Energy Information Administration's Form EIA-923, the survey behind the Electric Power Monthly, reported as thousands of megawatt hours and shown here as gigawatt hours summed to years. Small-scale rooftop solar is estimated separately and is not included in series like this one.
What the curve shows
Generation data dates the energy transition more precisely than any announcement: what a grid actually runs on is here, year by year. Over the window it has ranged between 216,961 GWh (2001) and 319,355 (2011), steadier than the fuels changing around it.
Is this capacity or actual generation?
Does this include rooftop solar?
Why sum monthly data to years?
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