New government statistics show renewables generated a record share of the UK’s electricity in 2025.
This reached 52.5%, marking the second consecutive year above 50%.
The Department for Energy Security and Net Zero said clean power output reached 152.5TWh, up from 144.3TWh in 2024.
The report added the increase was driven by higher wind and solar generation, with wind alone accounting for 30% or 87.1TWh of electricity.
Offshore wind generated 17.9% or 52TWh, while onshore wind contributed 12.1% or 35.1TWh.
Solar provided a record 6.9% or 20TWh of the UK’s electricity in 2025.
Low carbon generation, including renewables and nuclear, reached 64.8% or 188.3TWh.
Nuclear output fell by 12% to 35.9TWh, while fossil fuel generation rose slightly to 32% or 93.1TWh, mainly from gas.
“These figures show renewables are now the backbone of Britain’s power system, supplying most of our electricity for the second year running, with wind doing the heavy lifting,” said Tara Singh, chief executive of RenewableUK.
“With the next renewables auction opening in July – and more than twice the offshore wind capacity eligible compared to the last round – there’s a real opportunity to lock in cheaper, more secure power, and the Government should be ambitious on the budget and parameters for the upcoming auction.”