4th May 2026
The ECIU analysis argues that the UK’s electricity system is becoming increasingly self-reliant, even as North Sea oil and gas production continues its long-term decline. The key shift is the rapid growth of domestic renewable energy—especially wind and solar—which is reducing dependence on imported fuels.
Over the past decade, the share of UK electricity reliant on foreign energy has dropped significantly. In 2014, around two-thirds of electricity generation depended on imported fuels, but by 2024 this had fallen to roughly half. This change is largely due to renewables, which generate power without needing imported fuel.
A central point of the analysis is that declining North Sea gas output is inevitable and cannot be meaningfully reversed by new drilling. Even with additional licences, production is expected to fall sharply in the coming decades, meaning domestic fossil fuels will play a diminishing role regardless of policy choices.
Instead, renewables are taking over as the backbone of UK electricity. Offshore wind in particular is highlighted as a key driver, helping to replace gas-fired generation and increase the proportion of “homegrown” energy. This transition is framed as essential not just for climate goals, but for energy security—reducing exposure to volatile international gas markets.
The analysis also links this shift to the UK’s recent energy price shocks. Heavy reliance on gas meant the UK was especially vulnerable during the global energy crisis triggered in 2021. Expanding renewables is therefore presented as a way to stabilise bills over time, since wind and solar are not subject to fuel price swings.
Looking ahead, the ECIU concludes that further expansion of renewables will be crucial. As electricity demand rises—due to electric vehicles and heat pumps—clean, domestic power sources will need to scale up to maintain and improve energy security. Meanwhile, gas is expected to remain only as a backup source rather than a central pillar of the system.
The ECIU’s core message is that the UK can offset declining North Sea fossil fuels by expanding renewables—making its electricity supply more domestic, more secure, and less exposed to global price shocks.
Read the full report