Electricity Live

Great Britain’s electricity on Tuesday 12 May 2026

On Tuesday 12 May, demand averaged 29.8 GW. Renewables supplied 51%.

29.8GW AVERAGEWind11.71 GW38%Hydro0.20 GW1%Biomass2.22 GW7%Solar3.71 GW12%Gas3.85 GW13%Imports5.50 GW18%Nuclear3.47 GW11%29.8GW AVERAGE38%7%12%13%18%11%
Price
£101.09/MWh
Day average £101.09
Demand29.8GW
Generation 25.2Transfers 4.6
Fossil fuels13%
Renewables51%
Other36%
Carbon intensityLow
78g/kWh
0Day average 78300
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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 May 2026, wind supplied 38% of Great Britain’s electricity and gas 13%. Demand peaked at 36.0 GW at 10:30. Carbon intensity averaged 78 g/kWh and the price £101.09/MWh. Wind generation peaked at 15.1 GW at 12:10. Solar generation peaked at 11.0 GW at 11:30. Carbon intensity was lowest at 14:00 (32 g/kWh) and highest at 20:00 (139 g/kWh). The wholesale price ranged from £55.58/MWh at 11:00 to £155.45/MWh at 20:30. Wind made 47% of the electricity generated in Great Britain, compared with 36% across 2026 so far.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 3.7112.1%Wind 11.7138.2%Gas 3.8512.6%Hydro 0.200.7%Biomass 2.227.2%Nuclear 3.4711.3%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 29.8avgGeneration 25.2avgTransfers 4.6avg
The day in figurespeaks, averages, totals
Peak demand36.0GW · 10:30
Low 21.7 · 05:15Avg 29.80–40 GW
Made in Great Britain84%of demand
Generation 25.2Transfers 4.6 GW
Net imports115GWh
In
128 Out
13
Zero-carbon share76%of generation
Nuclear 14%Hydro 1%Wind 47%Solar 15%

Transfers · Tue 12 May

Interconnectors and storage

On Tuesday 12 May 2026, Great Britain imported 128 GWh and exported 13 GWh through its interconnectors. The most came from France (74 GWh), and the most exports went to Ireland (11 GWh).

All interconnectors

Tue 12 May
Imported
128GWh
Exported
13GWh
Net in
115GWh
Average net flow
4.80GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.85GWImporting

In 20.4 GWhOut 0.1 GWh

Denmark

Viking Link

Average0.93GWImporting

In 23.4 GWhOut 1.1 GWh

France

IFA · IFA2 · ElecLink

Average3.07GWImporting

In 73.7 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.33GWExporting

In 2.6 GWhOut 10.6 GWh

Netherlands

BritNed

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Norway

North Sea Link

Average0.28GWImporting

In 8.4 GWhOut 1.6 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.15GWPumping

Generated 3.6 GWhPumped 7.3 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.