Electricity Live

Great Britain’s electricity on Wednesday 20 October 2021

On Wednesday 20 October, demand averaged 31.8 GW. Renewables supplied 42%.

31.8GW AVERAGEWind12.05 GW37%Hydro0.59 GW2%Biomass2.25 GW7%Solar1.07 GW3%Gas8.81 GW27%Imports3.37 GW10%Nuclear4.57 GW14%31.8GW AVERAGE37%27%10%14%
Price
£153.75/MWh
Day average £153.75
Demand31.8GW
Generation 29.3Transfers 2.4
Fossil fuels27%
Renewables42%
Other31%
Carbon intensityLow
123g/kWh
0Day average 123300
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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 Wednesday 20 October 2021, wind supplied 37% of Great Britain’s electricity and gas 27%. Demand peaked at 38.6 GW at 18:20. Carbon intensity averaged 123 g/kWh and the price £153.75/MWh. Wind generation peaked at 15.2 GW at 00:55. Solar generation peaked at 4.6 GW at 13:00. Carbon intensity was lowest at 01:00 (55 g/kWh) and highest at 20:00 (176 g/kWh). The wholesale price ranged from −£1.64/MWh at 02:30 to £250.48/MWh at 19:00. The price was below zero for 0.5 hours. Wind made 41% of the electricity generated in Great Britain, compared with 25% across 2021.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 1.073.3%Wind 12.0536.8%Gas 8.8126.9%Hydro 0.591.8%Biomass 2.256.9%Nuclear 4.5714.0%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 31.8avgGeneration 29.3avgTransfers 2.4avg
The day in figurespeaks, averages, totals
Peak demand38.6GW · 18:20
Low 22.1 · 03:55Avg 31.80–40 GW
Made in Great Britain92%of demand
Generation 29.3Transfers 2.4 GW
Net imports56GWh
In
72 Out
16
Zero-carbon share62%of generation
Nuclear 16%Hydro 2%Wind 41%Solar 4%

Transfers · Wed 20 Oct

Interconnectors and storage

On Wednesday 20 October 2021, Great Britain imported 72 GWh and exported 16 GWh through its interconnectors. The most came from Belgium (20 GWh), and the most exports went to Ireland (14 GWh).

All interconnectors

Wed 20 Oct
Imported
72GWh
Exported
16GWh
Net in
56GWh
Average net flow
2.33GW 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

Average0.66GWImporting

In 17.7 GWhOut 1.7 GWh

Ireland

Moyle · East–West · Greenlink

Average0.55GWExporting

In 0.8 GWhOut 13.9 GWh

Netherlands

BritNed

Average0.75GWImporting

In 18.1 GWhOut 0.0 GWh

Norway

North Sea Link

Average0.61GWImporting

In 14.6 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.10GWGenerating

Generated 9.4 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.