Solar power was EU’s largest source of electricity in June 2025, marking historic first

In the second quarter of 2025, 54.0% of net electricity generated in the EU came from renewable energy sources, an increase from the 52.7% registered in the same quarter of 2024. This increase was mostly due to solar energy, which generated a total of 122 317 gigawatt-hours (GWh) in the second quarter of 2025, representing 19.9% of the total electricity generation mix.

June 2025 was the first month in history where solar energy (22.0%) was the main source of electricity generated in the EU, ahead of nuclear (21.6%), wind (15.8%), hydro (14.1%) and natural gas (13.8%).

Among EU countries, in the second quarter of 2025, Denmark, with 94.7%, had the highest share of renewables in net electricity generated, followed by Latvia (93.4%), Austria (91.8%), Croatia (89.5%) and Portugal (85.6%). The lowest shares of renewables were recorded in Slovakia (19.9%), Malta (21.2%) and Czechia (22.1%).

In 15 EU countries, the share of renewable energy sources in net electricity generation increased in the second quarter of 2025. The largest year-on-year increases were recorded in Luxembourg (+13.5 percentage points (pp)) and Belgium (+9.1 pp), both of them due to the increase in solar energy.

Most of the electricity generated from renewable sources came from solar (36.8%), wind (29.5%) and hydro (26.0%), followed by combustible renewable fuels (7.3%) and geothermal energy (0.4%).