Solar just became Europe’s biggest source of electricity – here’s the milestone it hit

Solar power hit a new high across Europe in June 2026, generating a record 52 terawatt-hours and supplying a quarter of all electricity used in the European Union that month. That made solar the EU's single biggest power source, ahead of nuclear, gas, wind, hydro, and coal combined for that month. A heat wave played a role: hot weather pushed up demand for air conditioning, and long sunny days let solar panels produce more power just when it was needed, while other sources lagged in the still, hot conditions.

The bigger story is how fast solar has grown. Five years ago, in June 2021, solar supplied only about 10% of EU electricity. Since then it has grown more than 20% a year, making it Europe's fastest-growing power source, with the EU adding 65.1 gigawatts of new solar capacity in 2025 alone. So far in 2026, 18 EU countries have set new monthly records for solar's share of their electricity mix.

Some countries are further along than others. Germany hit 36% solar in June, Spain reached 34% for the first time, and even Poland, still heavily reliant on coal, generated 24% of its electricity from solar. In Spain, that solar growth is also credited with saving households roughly €10 a month on electricity bills during a recent energy price spike. None of this changes rebates or incentives for individual homes, but it shows solar continuing to expand faster than expected across the continent.