Brussels, For the first time in European history, solar energy emerged as the primary source of electricity generation across the EU in June 2025, accounting for 22.0% of total output—surpassing nuclear (21.6%), wind (15.8%), hydro (14.1%), and natural gas (13.8%).

According to Eurostat’s latest quarterly data, renewables supplied 54.0% of net electricity in the EU during Q2 2025, up from 52.7% in the same period last year. The surge was largely driven by solar, which generated over 122,000 gigawatt-hours (GWh) in the quarter, representing 19.9% of the total electricity mix.

Among member states, Denmark led with 94.7% renewable electricity, followed by Latvia (93.4%), Austria (91.8%), Croatia (89.5%), and Portugal (85.6%). In contrast, Slovakia (19.9%), Malta (21.2%), and Czechia (22.1%) recorded the lowest shares.

The largest year-on-year increases in renewable share were seen in Luxembourg (+13.5 percentage points) and Belgium (+9.1 pp), both driven by expanded solar capacity.

Eurostat emphasized that these figures reflect net electricity generation, not gross consumption, and differ from metrics used in the Renewable Energy Directive (RED). The data includes solar photovoltaics and solar thermal generation, aggregated monthly into quarterly totals.