Electricity Live

Great Britain’s electricity on Saturday 31 July 2021

On Saturday 31 July, demand averaged 26.0 GW. Renewables supplied 26%.

26.0GW AVERAGEWind5.17 GW19%Hydro0.11 GW0%Biomass1.65 GW6%Solar1.62 GW6%Gas9.66 GW36%Coal0.78 GW3%Imports4.25 GW16%Nuclear3.56 GW13%26.0GW AVERAGE19%36%16%13%
Price
£106.38/MWh
Day average £106.38
Demand26.0GW
Generation 22.6Transfers 3.5
Fossil fuels36%
Renewables26%
Other35%
Carbon intensityModerate
190g/kWh
0Day average 190300
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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 31 July 2021, gas supplied 36% of Great Britain’s electricity and wind 19%. Demand peaked at 31.1 GW at 12:00. Carbon intensity averaged 190 g/kWh and the price £106.38/MWh. Wind generation peaked at 8.0 GW at 03:20. Solar generation peaked at 4.9 GW at 12:00. Carbon intensity was lowest at 03:30 (125 g/kWh) and highest at 21:00 (250 g/kWh). The wholesale price ranged from £75.51/MWh at 05:00 to £135.97/MWh at 19:30. Gas made 43% of the electricity generated in Great Britain, compared with 42% across 2021.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 1.626.0%Wind 5.1719.3%Gas 9.6636.1%Hydro 0.110.4%Biomass 1.656.2%Nuclear 3.5613.3%Coal 0.782.9%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 26.0avgGeneration 22.6avgTransfers 3.5avg
The day in figurespeaks, averages, totals
Peak demand31.1GW · 12:00
Low 19.6 · 04:50Avg 26.00–40 GW
Made in Great Britain87%of demand
Generation 22.6Transfers 3.5 GW
Net imports87GWh
In
100 Out
13
Zero-carbon share46%of generation
Nuclear 16%Hydro 0%Wind 23%Solar 7%

Transfers · Sat 31 Jul

Interconnectors and storage

On Saturday 31 July 2021, Great Britain imported 100 GWh and exported 13 GWh through its interconnectors. The most came from France (61 GWh), and the most exports went to Ireland (13 GWh).

All interconnectors

Sat 31 Jul
Imported
100GWh
Exported
13GWh
Net in
87GWh
Average net flow
3.63GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.85GWImporting

In 20.4 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.56GWImporting

In 61.4 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.52GWExporting

In 0.0 GWhOut 12.5 GWh

Netherlands

BritNed

Average0.74GWImporting

In 17.8 GWhOut 0.0 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.14GWPumping

Generated 2.3 GWhPumped 5.6 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.