Renewable energy - considered crucial to limiting climate change - produced a record amount of electricity in Great Britain in 2025, BBC analysis shows.
Wind was the biggest single renewable source of electricity, according to the provisional figures from the National Energy System Operator (Neso).
But solar-powered electricity rose by nearly a third on 2024 levels, helped by the UK's sunniest year on record and the expansion of solar panels around the country.
While behind renewables, electricity from fossil gas also rose slightly, highlighting the challenge of reaching the government's "clean power" target by 2030.
"It has been quite a strong year in terms of deployment of renewables," said Pranav Menon, research senior associate at the Aurora Energy Research think tank.
