A review by the Sun Day Campaign of data released by the U.S. Energy Information Administration (EIA) shows that wind and solar together provided just over 20% of U.S. electricity during the first six months of 2025. In total, renewables accounted for nearly 28% of generation. Wind remained a central source of renewable power. Turbines generated 11.6% of U.S. electricity between January and June, a 2.4% increase compared to the same period in 2024. Output from wind was nearly twice that of hydropower and continues to play a key role in reducing reliance on fossil fuels.
Solar also expanded strongly, with combined utility-scale and small-scale systems providing 8.7% of total generation during the first half of the year, up from 6.9% a year earlier. In June alone, solar contributed more than 10% of total electricity.
Together, wind and solar produced 20.3% of total U.S. electricity in the first half of 2025, surpassing coal by 25% and nuclear by 15.6%. Their combined share was up from 18.6% during the same period last year.
Across all renewable sources – wind, solar, hydropower, biomass and geothermal – output grew by 9.2% compared to 2024 and represented 27.7% of U.S. electricity production. This increase was three times faster than overall national growth in electricity demand. Natural gas remained the largest single source, although its generation declined by 3.7%.
The SUN DAY Campaign noted that these figures reflect conditions prior to the enactment of the TrumpRepublican megabill, which may negatively affect future renewable energy growth. Even so, EIA forecasts that half of new U.S. capacity additions in 2025 will come from solar and another 13% from wind.
