Electricity Live

Great Britain’s electricity on Saturday 4 September 2021

On Saturday 4 September, demand averaged 26.7 GW. Renewables supplied 17%.

26.7GW AVERAGEWind3.22 GW12%Hydro0.10 GW0%Biomass1.47 GW5%Solar1.39 GW5%Gas11.66 GW42%Coal0.50 GW2%Imports4.71 GW17%Nuclear4.45 GW16%26.7GW AVERAGE12%42%17%16%
Price
£141.63/MWh
Day average £141.63
Demand26.7GW
Generation 22.8Transfers 3.9
Fossil fuels42%
Renewables17%
Other39%
Carbon intensityModerate
214g/kWh
0Day average 214300
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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 4 September 2021, gas supplied 42% of Great Britain’s electricity and nuclear 16%. Demand peaked at 31.2 GW at 10:30. Carbon intensity averaged 214 g/kWh and the price £141.63/MWh. Wind generation peaked at 4.0 GW at 21:55. Solar generation peaked at 4.6 GW at 13:00. Carbon intensity was lowest at 14:30 (200 g/kWh) and highest at 20:00 (230 g/kWh). The wholesale price ranged from £99.79/MWh at 15:30 to £176.91/MWh at 19:30. Gas made 51% 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 1.395.0%Wind 3.2211.7%Gas 11.6642.4%Hydro 0.100.4%Biomass 1.475.4%Nuclear 4.4516.2%Coal 0.501.8%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 26.7avgGeneration 22.8avgTransfers 3.9avg
The day in figurespeaks, averages, totals
Peak demand31.2GW · 10:30
Low 20.1 · 03:55Avg 26.70–40 GW
Made in Great Britain85%of demand
Generation 22.8Transfers 3.9 GW
Net imports97GWh
In
111 Out
13
Zero-carbon share40%of generation
Nuclear 20%Hydro 0%Wind 14%Solar 6%

Transfers · Sat 4 Sept

Interconnectors and storage

On Saturday 4 September 2021, Great Britain imported 111 GWh and exported 13 GWh through its interconnectors. The most came from France (67 GWh), and the most exports went to Ireland (13 GWh).

All interconnectors

Sat 4 Sept
Imported
111GWh
Exported
13GWh
Net in
97GWh
Average net flow
4.05GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.89GWImporting

In 21.3 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.79GWImporting

In 67.0 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.56GWExporting

In 0.0 GWhOut 13.4 GWh

Netherlands

BritNed

Average0.93GWImporting

In 22.4 GWhOut 0.0 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.17GWPumping

Generated 2.4 GWhPumped 6.5 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.