In June 2025, solar power became the leading source of electricity across the European Union for the first time, surpassing wind, nuclear, and coal energy. This milestone was driven by exceptional sunlight levels and increased solar capacity within the region. According to data from the energy think tank Ember, coal's contribution to the EU's electricity mix fell to an all-time low during this period. Solar energy accounted for nearly a quarter of Europe's electricity production in June, marking an unprecedented shift in the continent's energy landscape. The transition reflects a broader transformation in the EU's energy sector, with solar power dethroning traditional sources such as nuclear and wind. Notably, Belgium and France also saw solar energy become their primary electricity sources in June. Despite record installations of wind turbines in the first half of 2025, wind power did not achieve comparable production gains. On particularly sunny days, Europe generates more solar energy than it can immediately consume or store, highlighting both the growth and challenges of integrating solar power into the grid.