Electricity Live

Great Britain’s electricity on Sunday 23 March 2025

On Sunday 23 March, demand averaged 28.4 GW. Renewables supplied 24%.

28.4GW AVERAGEWind5.85 GW20%Hydro0.21 GW1%Biomass1.01 GW3%Solar0.97 GW3%Gas9.54 GW33%Imports8.06 GW28%Nuclear3.52 GW12%28.4GW AVERAGE20%33%28%12%
Price
£99.86/MWh
Day average £99.86
Demand28.4GW
Generation 21.1Transfers 7.3
Fossil fuels33%
Renewables24%
Other43%
Carbon intensityHigh
160g/kWh
0Day average 160300
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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 Sunday 23 March 2025, gas supplied 33% of Great Britain’s electricity and wind 20%. Demand peaked at 35.4 GW at 18:10. Carbon intensity averaged 160 g/kWh and the price £99.86/MWh. Wind generation peaked at 8.4 GW at 04:30. Solar generation peaked at 3.7 GW at 11:00. Carbon intensity was lowest at 03:30 (88 g/kWh) and highest at 20:00 (224 g/kWh). The wholesale price ranged from £74.45/MWh at 04:30 to £126.08/MWh at 19:00. Gas made 45% 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 0.973.3%Wind 5.8520.1%Gas 9.5432.7%Hydro 0.210.7%Biomass 1.013.5%Nuclear 3.5212.1%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 28.4avgGeneration 21.1avgTransfers 7.3avg
The day in figurespeaks, averages, totals
Peak demand35.4GW · 18:10
Low 21.8 · 03:50Avg 28.40–40 GW
Made in Great Britain74%of demand
Generation 21.1Transfers 7.3 GW
Net imports179GWh
In
190 Out
12
Zero-carbon share50%of generation
Nuclear 17%Hydro 1%Wind 28%Solar 5%

Transfers · Sun 23 Mar

Interconnectors and storage

On Sunday 23 March 2025, Great Britain imported 190 GWh and exported 12 GWh through its interconnectors. The most came from France (96 GWh), and the most exports went to Ireland (10 GWh).

All interconnectors

Sun 23 Mar
Imported
190GWh
Exported
12GWh
Net in
179GWh
Average net flow
7.44GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.78GWImporting

In 18.8 GWhOut 0.0 GWh

Denmark

Viking Link

Average1.25GWImporting

In 30.1 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average3.99GWImporting

In 95.6 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.01GWImporting

In 10.0 GWhOut 9.7 GWh

Netherlands

BritNed

Average0.41GWImporting

In 12.0 GWhOut 2.2 GWh

Norway

North Sea Link

Average1.00GWImporting

In 23.9 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.17GWPumping

Generated 3.0 GWhPumped 7.0 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.