Electricity Live

Great Britain’s electricity on Tuesday 12 August 2025

On Tuesday 12 August, demand averaged 28.7 GW. Renewables supplied 24%.

28.7GW AVERAGEWind3.15 GW10%Hydro0.35 GW1%Biomass2.85 GW9%Solar3.79 GW12%Gas11.13 GW37%Imports6.09 GW20%Nuclear3.00 GW10%28.7GW AVERAGE10%9%12%37%20%10%
Price
£88.78/MWh
Day average £88.78
Demand28.7GW
Generation 24.3Transfers 4.5
Fossil fuels37%
Renewables24%
Other39%
Carbon intensityModerate
178g/kWh
0Day average 178300
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Recorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hour

Key moments

On Tuesday 12 August 2025, gas supplied 37% of Great Britain’s electricity and solar 12%. Demand peaked at 35.9 GW at 13:25. Carbon intensity averaged 178 g/kWh and the price £88.78/MWh. Wind generation peaked at 4.9 GW at 02:50. Solar generation peaked at 12.2 GW at 13:00. Carbon intensity was lowest at 12:30 (123 g/kWh) and highest at 21:30 (242 g/kWh). The wholesale price ranged from £68.22/MWh at 03:30 to £129.27/MWh at 18:30. Gas made 46% of the electricity generated in Great Britain, compared with 32% across 2025.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 3.7912.5%Wind 3.1510.4%Gas 11.1336.7%Hydro 0.351.2%Biomass 2.859.4%Nuclear 3.009.9%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 28.7avgGeneration 24.3avgTransfers 4.5avg
The day in figurespeaks, averages, totals
Peak demand35.9GW · 13:25
Low 20.3 · 05:05Avg 28.70–40 GW
Made in Great Britain84%of demand
Generation 24.3Transfers 4.5 GW
Net imports106GWh
In
144 Out
39
Zero-carbon share42%of generation
Nuclear 12%Hydro 1%Wind 13%Solar 16%

Transfers · Tue 12 Aug

Interconnectors and storage

On Tuesday 12 August 2025, Great Britain imported 144 GWh and exported 39 GWh through its interconnectors. The most came from France (82 GWh), and the most exports went to Ireland (22 GWh).

All interconnectors

Tue 12 Aug
Imported
144GWh
Exported
39GWh
Net in
106GWh
Average net flow
4.40GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.56GWImporting

In 14.1 GWhOut 0.8 GWh

Denmark

Viking Link

Average0.13GWExporting

In 6.7 GWhOut 9.8 GWh

France

IFA · IFA2 · ElecLink

Average3.43GWImporting

In 82.4 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.92GWExporting

In 0.0 GWhOut 22.1 GWh

Netherlands

BritNed

Average0.17GWImporting

In 10.3 GWhOut 6.1 GWh

Norway

North Sea Link

Average1.28GWImporting

In 30.8 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.06GWGenerating

Generated 1.8 GWhPumped 0.4 GWh

All cards share one scale, so you can compare their heights. Each country can have more than one cable.

Download the 5-minute data for this day: CSV · JSON. See what the figures mean.