Summer demand is rising, and solar is taking more of the load
Solar generation in the United States is expected to rise 17% this summer compared with 2025 levels, according to the U.S. Energy Information Administration’s latest Short-Term Energy Outlook. The agency also expects hydro generation to grow 6% and wind 5% over last summer, reinforcing a trend in which renewable resources are increasingly central to meeting electricity demand during the hottest months of the year.
The significance of that forecast goes beyond a one-season bump. EIA says total U.S. electricity sales are likely to increase 1.2% in 2026 to 4,108 billion kilowatt-hours, then grow another 3.3% in 2027. It expects summer demand to rise 2.3% this year compared with 2025 and 3.7% in 2027. In that environment, the resources gaining the fastest ground during peak months matter disproportionately.
Solar is becoming the visible summer growth story
EIA notes that last summer solar generation surpassed wind generation for the first time during the season, and it expects that trend to continue. By the summer of 2027, the agency says solar output should grow another 22% to 178 billion kilowatt-hours, exceeding wind by almost 30% during the season, even though wind is still expected to generate more electricity across the full year.
That is an important distinction. Solar’s strength is becoming especially clear during daylight-heavy, air-conditioning-intensive periods when demand is high and generation from photovoltaics is naturally aligned with load. As more capacity comes online, solar is increasingly moving from a supplementary clean-energy source to a central contributor to summer reliability.
