Europe's clean-energy transition is at a crossroads. New data from Eurostat, the EU's statistics agency, show that renewable sources—including solar, wind, hydro, and biofuels—generated 54.1% of the bloc's electricity in the second quarter of 2026. That is a marginal dip from 54.3% in the same period last year, and a sign that the rapid expansion of recent years is losing steam.
The share has fluctuated between 41% and just over 56% since the start of 2025. While renewables still outpace fossil fuels and nuclear across the EU, the pace of change has clearly slowed. Overall renewable electricity generation grew by 2.8% year-on-year, while total generation rose by 3.2%. Gas-fired generation, notably, increased by 3.9% over the same period.
Why the slowdown?
The deceleration is partly a matter of arithmetic. Many EU countries now operate on high clean-energy baselines, making further percentage-point gains harder. But it also reflects a broader challenge: integrating ever more variable wind and solar into grids that were not designed for them. As grid bottlenecks become more apparent, the EU's ambition to lead the global energy transition is being tested.
Brussels launched its push to ditch Russian gas after Moscow's full-scale invasion of Ukraine, and the results have been substantial. From early 2023, wind and solar capacity expanded rapidly, saving the EU tens of billions of euros in avoided gas and coal purchases. Yet the latest figures suggest that the low-hanging fruit has been picked.
Solar remains the single largest renewable source, contributing 41.6% of EU electricity in Q2 2026, up from 37% a year earlier. In June, solar was Europe's top electricity source overall. Wind follows at 27.7%, hydro at 22.6%, with combustible renewables (7.7%) and geothermal (0.4%) making up the rest.
Widening gaps between member states
The Eurostat data also highlight stark national disparities. Latvia leads the pack, generating 97.7% of its electricity from renewables, thanks to the Daugava River cascade and a rapid rollout of household solar panels. Denmark follows at 94%, powered largely by wind, with Croatia third at 92.2% on the back of hydropower. Austria, Estonia, Portugal, and Lithuania also rank high.
At the other end, Slovakia generates just 19.8% of its electricity from renewables, relying on nuclear for around 70% of its needs. Czechia is close behind at 20.9%, also leaning heavily on nuclear and fossil fuels. These gaps underscore the uneven pace of the transition across the continent.
Beyond electricity: the harder challenge
Electricity is only part of the story—and arguably the most successful one. When all energy use is considered, including heating and transport, renewables accounted for just 26.2% of the EU's gross final energy consumption last year, up from 25.2% in 2024. The EU's target is 42.5% by 2030, with an ambition to reach 45%.
Eurostat warns that meeting this goal requires increasing the renewable share by more than 16 percentage points in just five years—a formidable task. Sweden (65.4%), Finland (53%), and Denmark (48.2%) lead on overall renewable energy use, while Belgium (14.9%), Slovakia (16.3%), and Ireland (17.2%) lag far behind.
The ultimate objective remains climate neutrality by 2050. But as energy prices continue to ripple through the economy, the political will to accelerate the transition may face new tests. The EU's ability to close the gap between leaders and laggards—and to modernise its grids—will determine whether the boom can be revived or whether it has already plateaued.
