Energy · European Union · 2026
How solar became the EU’s biggest power source in June
Solar power did something the European Union had never seen before: it supplied a quarter of the bloc’s electricity over a full month. In June, it also became the EU’s largest single source of power, ahead of nuclear and gas.[6]
The milestone reflects a structural shift in Europe’s power mix, not a one-off weather event. Fresh analysis found that solar generated 25% of EU electricity in June 2026, while nuclear supplied 21%, gas 15%, wind 14%, hydro 12%, and coal only 8%.[6] That pattern matters because June is now a month when solar production can overtake every other source across the entire bloc, especially as installed capacity keeps expanding.
Solar supplied 25% of EU electricity in June 2026, the first month ever above one quarter.[6]
Nuclear contributed 21% of EU electricity in the same month, making it the second-largest source.[6]
Coal fell to 8% of EU electricity in June 2026, far below gas at 15% and wind at 14%.[6]
The signal is encouraging, but it should not be overstated: a monthly record does not mean the EU can yet run on solar alone, because output still drops sharply at night and in winter, and the system still depends on firm generation, storage, and grids.[6] The bigger question is whether the bloc can turn this summer peak into a stable year-round trend without bottlenecks in transmission, flexibility, and permitting.
Sources: Ember, 2026-07-29 · European Environment Agency, 2026-07-01