New analysis from the Energy and Climate Intelligence Unit (ECIU) has found that the UK’s electricity supply has become ever more British in the last year, with a higher proportion of the energy used to supply power coming from UK-based sources and a growing independence from foreign fuels such as gas imports for gas power stations.

Calculations based on new Government data estimate that, in 2025, 46 per cent of the primary energy used to supply electricity to the UK was imported, down from 48 per cent in 2024, and down from the peak of 67 per cent in 2013, and the lowest share since 2004, over 20 years ago.

Dr Simon Cran-McGreehin, head of analysis at ECIU, said: “Many people won’t necessarily realise it, but the UK has made significant progress in shifting away from gas and towards renewables, boosting energy independence in the process. The UK was particularly badly hurt by the last gas crisis because, because as a country, we’ve been so dependent on gas for both generating electricity and heating homes. As the current crisis shows, we’re not out of the woods yet, and the grid requires investment, but renewables already are helping to insulate against and gradually unplug from the volatile global oil and gas system.”

Over 53 per cent of the energy used for UK electricity supplies came from UK sources in 2025, up from 51 per cent in 2024. Higher output from renewables accounted for the majority of this improvement, giving over six times as much extra benefit as was provided by shifts in fossil fuel sources. Gas net imports did fall slightly in 2025, but this was only possible due to a reduction in demand, whilst North Sea gas production fell again.

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