GB Electricity Records

Historical records of UK power generation and carbon intensity. Updated daily.
Last updated: 21 Feb 2026, 14:32

Generation Records

Top 10 power generation records by source type

Wind
23,825 MW
05 Dec 2025, 17:30
Solar
14,035 MW
08 Jul 2025, 12:00
Gas
27,868 MW
12 Dec 2024, 08:00
Nuclear
9,342 MW
19 Aug 2013, 12:30
Coal
26,044 MW
02 Feb 2009, 17:00
View all 10 sourcesView All

Carbon Intensity Records

Cleanest periods in UK electricity history

#1 Lowest
19.0 gCO₂eq/kWh
15 Apr 2024, 13:30
#2 Lowest
21.0 gCO₂eq/kWh
13 Apr 2024, 14:30
#3 Lowest
23.0 gCO₂eq/kWh
05 Apr 2024, 12:30
#4 Lowest
23.0 gCO₂eq/kWh
29 May 2025, 09:30
#5 Lowest
24.0 gCO₂eq/kWh
23 Aug 2024, 11:00
View all recordsView All

New Feature Alert!

We've launched a UK Power Sites section where you can access data for over 3,000 power stations, wind farms, solar parks and other operational sites. Many now have dedicated pages with live generation data, interactive maps, and photos — helping you understand how individual assets behave and how they contribute to the wider electricity system.

Explore sites like Drax Biomass, the UK's largest offshore wind farm, the largest solar park, or even the iconic Electric Mountain.

You can view the full sites directory here.

2025 Year in Review

Did you know solar electricity generation was up 32% in 2025 and at times provided over 40% of GB's electricity? Or that renewables excluding biomass reached a new high of 37.3% of total generation? Yet gas usage also increased and still supplied more than a quarter of electricity throughout the year.

Our comprehensive 2025 Electricity Review reveals these key insights — including why carbon intensity rose slightly despite record renewable output, how demand grew for a second consecutive year, and which records were broken throughout 2025. Explore interactive charts, monthly comparisons with 2024, and analysis of the year's trends.

Check out the full 2025 Review to dive into the data, and please share if you find it interesting 😊