The British Government has announced that clean power output increased by 6% in 2025, reaching a record 152.5 TWh (up from 144.3 TWh in 2024), representing a share of 52.5% of the country’s power generation (290.6 TWh) (UK DESNZ press release, 02/04/2025). The increase in renewable generation share is mainly due to a record production of wind and solar, which increased by 4.1% to 87.1 TWh and by 37% to 20 TWh, respectively. In share terms, wind represented 30% and solar almost 7%, with generation from low-carbon sources (including nuclear) remaining stable 64.8%. During 2025, nuclear saw a record low production, falling by 12% due to continued outages on the UK’s nuclear fleet, which led to a 2% increase in thermal power generation, despite 2025 being the first year without coal generation. (+4.7% for gas-fired production to 32% of the power mix).
3.8 GW of renewable capacity was added in 2025, taking the total installed capacity to 65.1 GW, up from 61.3 GW in 2024 and 9.3 GW in 2010. Solar PV accounted for around 3/4 to these additions (2.8 GW), with most of the remainder coming from offshore wind.
Total electricity demand in 2025 only increased by 0.2% to 320.2 TWh. Domestic consumption and consumption by other final users, including commercial use, increased (+1.1%), while industrial consumption declined (-2.9%). Net imports fell by 11% to 30 TWh compared to the record high in 2024.