The grid is running on 70.4% low-carbon power right now.
Carbon intensity is moderate — An average mix of clean and fossil generation. Updated 3:06 pm.
Where Britain's power comes from
A live snapshot of the generation mix and how clean it is — Sunday, 15 June 2025.
Generation by fuel
Carbon intensity
An average mix of clean and fossil generation.
Every source, explained
Explore each generation type and Britain's cross-border links in detail.
Generation breakdown
Percentages are relative to demand, so totals may exceed 100% when Britain is exporting power. Tap any source to learn more.
Interconnector flows
Historical performance
Track how Britain's grid behaves across time — from the last day to the long-term transition.
Britain's energy transition
From coal to wind — and the open project tracking it all.
A grid transformed
Since 1882 Britain has reinvented its grid — from coal smog to a wind-led system. Gas overtook coal in 2013, and in 2024 coal was switched off for good. Wind now routinely leads the mix.
About this project
Voltvaneis an independent, open-source window into Great Britain's electricity system — updated every five minutes from official grid data feeds.