The European Union (EU) switched to solar energy as its primary source of electricity generation in the second quarter (Q2) of 2025.
This quarter, 54% of the net electricity generated in the EU came from renewable sources, up from 52.7% in 2024, according to EU data.
Solar energy, which produced 122,317 gigawatt hours (GWh) and accounted for 19.9% of the mix used to generate electricity, was a significant contributor to the growth.
For the first time, solar energy became the main source of electricity in the EU, accounting for 22% of total electricity production in June 2025. This exceeded nuclear energy’s 21.6% contribution, which was followed by hydroelectric power at 14.1%, natural gas at 13.8%, and wind at 15.8%.
In the second quarter of 2025, Denmark had the highest percentage of renewable energy in net electricity generation in the EU, at 94.7%.
Close behind were Croatia (89.5%), Austria (91.8%), Portugal (85.6%), and Latvia (93.4%).
Slovakia had the lowest percentage of renewable energy at 19.9%, followed by Malta (21.2%) and Czechia (22.1%).
In the second quarter of 2025, 15 EU countries saw an increase in the share of renewable energy sources in their net electricity generation.
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