Electricity Live

Great Britain’s electricity on Saturday 21 June 2025

On Saturday 21 June, demand averaged 26.6 GW. Renewables supplied 41%.

26.6GW AVERAGEWind8.26 GW29%Hydro0.20 GW1%Biomass2.21 GW8%Solar3.09 GW11%Gas4.54 GW16%Imports5.24 GW19%Nuclear4.76 GW17%26.6GW AVERAGE29%8%11%16%19%17%
Price
£93.09/MWh
Day average £93.09
Demand26.6GW
Generation 23.1Transfers 3.5
Fossil fuels16%
Renewables41%
Other43%
Carbon intensityLow
91g/kWh
0Day average 91300
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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 21 June 2025, wind supplied 29% of Great Britain’s electricity and nuclear 17%. Demand peaked at 31.5 GW at 16:55. Carbon intensity averaged 91 g/kWh and the price £93.09/MWh. Wind generation peaked at 12.1 GW at 23:55. Solar generation peaked at 8.0 GW at 10:00. Carbon intensity was lowest at 23:30 (67 g/kWh) and highest at 19:00 (128 g/kWh). The wholesale price ranged from £70.18/MWh at 10:30 to £120.20/MWh at 19:00. Wind made 36% of the electricity generated in Great Britain, compared with 35% across 2025.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 3.0910.9%Wind 8.2629.2%Gas 4.5416.0%Hydro 0.200.7%Biomass 2.217.8%Nuclear 4.7616.8%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 26.6avgGeneration 23.1avgTransfers 3.5avg
The day in figurespeaks, averages, totals
Peak demand31.5GW · 16:55
Low 19.9 · 04:50Avg 26.60–40 GW
Made in Great Britain87%of demand
Generation 23.1Transfers 3.5 GW
Net imports85GWh
In
125 Out
40
Zero-carbon share71%of generation
Nuclear 21%Hydro 1%Wind 36%Solar 13%

Transfers · Sat 21 Jun

Interconnectors and storage

On Saturday 21 June 2025, Great Britain imported 125 GWh and exported 40 GWh through its interconnectors. The most came from France (62 GWh), and the most exports went to Ireland (22 GWh).

All interconnectors

Sat 21 Jun
Imported
125GWh
Exported
40GWh
Net in
85GWh
Average net flow
3.55GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.28GWImporting

In 10.9 GWhOut 4.2 GWh

Denmark

Viking Link

Average0.37GWImporting

In 13.2 GWhOut 4.4 GWh

France

IFA · IFA2 · ElecLink

Average2.57GWImporting

In 61.6 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.93GWExporting

In 0.0 GWhOut 22.3 GWh

Netherlands

BritNed

Average0.00GWIdle

In 8.8 GWhOut 8.8 GWh

Norway

North Sea Link

Average1.27GWImporting

In 30.4 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.01GWPumping

Generated 0.8 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.