Electricity Live

Great Britain’s electricity on Saturday 23 August 2025

On Saturday 23 August, demand averaged 24.4 GW. Renewables supplied 15%.

24.4GW AVERAGEWind1.36 GW5%Hydro0.30 GW1%Biomass3.00 GW12%Solar2.20 GW9%Gas8.48 GW33%Imports7.25 GW28%Nuclear3.24 GW13%24.4GW AVERAGE12%9%33%28%13%
Price
£83.88/MWh
Day average £83.88
Demand24.4GW
Generation 18.6Transfers 5.8
Fossil fuels33%
Renewables15%
Other52%
Carbon intensityHigh
173g/kWh
0Day average 173300
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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 Saturday 23 August 2025, gas supplied 33% of Great Britain’s electricity and nuclear 13%. Demand peaked at 28.4 GW at 11:55. Carbon intensity averaged 173 g/kWh and the price £83.88/MWh. Wind generation peaked at 1.8 GW at 00:00. Solar generation peaked at 7.6 GW at 11:00. Carbon intensity was lowest at 10:30 (126 g/kWh) and highest at 21:00 (210 g/kWh). The wholesale price ranged from £71.30/MWh at 10:30 to £105.55/MWh at 19:00. 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 2.208.5%Wind 1.365.3%Gas 8.4832.8%Hydro 0.301.2%Biomass 3.0011.6%Nuclear 3.2412.5%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 24.4avgGeneration 18.6avgTransfers 5.8avg
The day in figurespeaks, averages, totals
Peak demand28.4GW · 11:55
Low 19.1 · 05:25Avg 24.40–30 GW
Made in Great Britain76%of demand
Generation 18.6Transfers 5.8 GW
Net imports139GWh
In
173 Out
34
Zero-carbon share38%of generation
Nuclear 17%Hydro 2%Wind 7%Solar 12%

Transfers · Sat 23 Aug

Interconnectors and storage

On Saturday 23 August 2025, Great Britain imported 173 GWh and exported 34 GWh through its interconnectors. The most came from France (95 GWh), and the most exports went to Ireland (34 GWh).

All interconnectors

Sat 23 Aug
Imported
173GWh
Exported
34GWh
Net in
139GWh
Average net flow
5.79GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.68GWImporting

In 16.3 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.73GWImporting

In 17.4 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average3.94GWImporting

In 94.5 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average1.40GWExporting

In 0.0 GWhOut 33.6 GWh

Netherlands

BritNed

Average0.54GWImporting

In 13.7 GWhOut 0.8 GWh

Norway

North Sea Link

Average1.31GWImporting

In 31.5 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.01GWPumping

Generated 0.7 GWhPumped 1.0 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.