According to new figures released by the UK government, renewable energy accounted for 52.1% of the country’s electricity generation in 2025, surpassing half of total power generation for the second consecutive year (Department for Energy Security and Net Zero (DESNZ) data report, 30/07/2026).
The DESNZ reported that renewables generated a record 153 TWh of electricity in 2025, compared with 144.5 TWh in 2024, with the growth mainly driven by the expansion of wind and solar capacity.
The statistics showed that wind power remained the largest renewable electricity source, accounting for 29.5% of total electricity supply, up slightly from 29.2% in 2024. It was narrowly surpassed by gas, which continued to be the UK’s leading generation source, representing 31.8% of electricity production.
Solar power reached a new record, contributing 6.9% of the UK’s electricity generation in 2025, equivalent to 20.1 TWh, compared with 5.2% or 15 TWh the previous year.
Meanwhile, nuclear generation declined by 12%, falling from 40.6 TWh in 2024 (14.2% of UK electricity generation) to 35.9 TWh in 2025 (12.2%). This level was half of the generation recorded in 2015, as older nuclear facilities were retired and outages increased across the ageing nuclear fleet.
Overall, UK energy production remained at a record low, decreasing by 1% compared with 2024. While oil production increased slightly, gas output fell by 3% to its lowest level of the 21st century, as production from the UK’s mature basin continued to decline, according to the government report.