SolarPower Europe estimates that EU solar generation is significantly underreported, with actual PV output projected at 410 TWh in 2025 versus 275 TWh in official statistics. The group attributes the gap to incomplete rooftop PV registration, data transfer delays, and the difficulty of measuring self-consumed solar electricity.
May 23, 2026
SolarPower Europe estimates that current rooftop PV generation is underestimated by UE authorities and member states.
“According to our analysis published in SolarPower Europe’s Solar+ report, solar power generation alone is systematically underestimated in EU and member state statistics,” Raffaele Rossi, head of market intelligence at SolarPower Europe, told pv magazine.
By the end of 2025, the EU’s total installed solar capacity is expected to reach 406 GW. Based on aggregated country-level data, SolarPower Europe estimates PV electricity generation at 410 TWh. However, official EU operator statistics report only 275 TWh, a gap of more than 135 TWh, or 33%.
