For the first time on record, solar power generated more electricity across the United States than coal.
The milestone, crossed in 2026, caps a shift that has been building for years. Coal's share of US generation has declined steadily as aging plants retire and go unrepaired, while solar capacity has surged on the back of falling hardware costs and federal incentives from climate legislation. The crossover was widely expected — the question for the past few years was when, not whether.
Coal dominated US electricity for most of the 20th century, so the symbolic weight here is real even if the direction of travel has been visible for a decade. Grid operators now have to manage solar's intermittency at a scale that was largely theoretical not long ago — midday surpluses, sharp evening demand ramps, curtailment calls that coal-heavy grids never had to make.
Worth keeping in perspective: "more than coal" still isn't "dominant." Natural gas remains the largest single source of US electricity by a wide margin, and solar's lead will narrow once summer ends. A June record is a real one, but it is also a convenient one.