Electricity Live

Great Britain’s electricity on Sunday 21 March 2021

On Sunday 21 March, demand averaged 30.3 GW. Renewables supplied 21%.

30.3GW AVERAGEWind4.92 GW16%Hydro0.46 GW1%Biomass2.15 GW7%Solar1.29 GW4%Gas13.41 GW43%Coal0.10 GW0%Imports3.90 GW13%Nuclear4.84 GW16%30.3GW AVERAGE16%43%13%16%
Price
£53.64/MWh
Day average £53.64
Demand30.3GW
Generation 27.2Transfers 3.1
Fossil fuels43%
Renewables21%
Other35%
Carbon intensityModerate
196g/kWh
0Day average 196300
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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 Sunday 21 March 2021, gas supplied 43% of Great Britain’s electricity and wind 16%. Demand peaked at 37.5 GW at 18:50. Carbon intensity averaged 196 g/kWh and the price £53.64/MWh. Wind generation peaked at 6.9 GW at 01:05. Solar generation peaked at 4.7 GW at 11:00. Carbon intensity was lowest at 03:00 (152 g/kWh) and highest at 20:00 (256 g/kWh). The wholesale price ranged from £40.95/MWh at 04:00 to £85.18/MWh at 19:00. Gas made 49% 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 1.294.2%Wind 4.9215.8%Gas 13.4143.2%Hydro 0.461.5%Biomass 2.156.9%Nuclear 4.8415.6%Coal 0.100.3%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 30.3avgGeneration 27.2avgTransfers 3.1avg
The day in figurespeaks, averages, totals
Peak demand37.5GW · 18:50
Low 22.7 · 04:45Avg 30.30–40 GW
Made in Great Britain90%of demand
Generation 27.2Transfers 3.1 GW
Net imports74GWh
In
90 Out
16
Zero-carbon share42%of generation
Nuclear 18%Hydro 2%Wind 18%Solar 5%

Transfers · Sun 21 Mar

Interconnectors and storage

On Sunday 21 March 2021, Great Britain imported 90 GWh and exported 16 GWh through its interconnectors. The most came from France (67 GWh), and the most exports went to Ireland (16 GWh).

All interconnectors

Sun 21 Mar
Imported
90GWh
Exported
16GWh
Net in
74GWh
Average net flow
3.08GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.93GWImporting

In 22.4 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.81GWImporting

In 67.5 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.66GWExporting

In 0.0 GWhOut 15.9 GWh

Netherlands

BritNed

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.03GWGenerating

Generated 3.8 GWhPumped 3.2 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.