Electricity Live

Great Britain’s electricity on Wednesday 21 April 2021

On Wednesday 21 April, demand averaged 32.2 GW. Renewables supplied 24%.

32.2GW AVERAGEWind5.27 GW16%Hydro0.36 GW1%Biomass2.49 GW8%Solar2.27 GW7%Gas16.17 GW49%Coal0.15 GW0%Imports1.60 GW5%Nuclear4.65 GW14%32.2GW AVERAGE16%8%49%14%
Price
£65.06/MWh
Day average £65.06
Demand32.2GW
Generation 31.4Transfers 0.8
Fossil fuels49%
Renewables24%
Other27%
Carbon intensityHigh
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 Wednesday 21 April 2021, gas supplied 49% of Great Britain’s electricity and wind 16%. Demand peaked at 38.3 GW at 12:45. Carbon intensity averaged 214 g/kWh and the price £65.06/MWh. Wind generation peaked at 8.3 GW at 09:30. Solar generation peaked at 7.1 GW at 13:00. Carbon intensity was lowest at 13:30 (180 g/kWh) and highest at 00:00 (247 g/kWh). The wholesale price ranged from £43.73/MWh at 23:30 to £82.02/MWh at 07:30. Gas made 52% 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 2.276.9%Wind 5.2716.0%Gas 16.1749.0%Hydro 0.361.1%Biomass 2.497.5%Nuclear 4.6514.1%Coal 0.150.5%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 32.2avgGeneration 31.4avgTransfers 0.8avg
The day in figurespeaks, averages, totals
Peak demand38.3GW · 12:45
Low 22.9 · 04:30Avg 32.20–40 GW
Made in Great Britain98%of demand
Generation 31.4Transfers 0.8 GW
Net imports19GWh
In
35 Out
16
Zero-carbon share40%of generation
Nuclear 15%Hydro 1%Wind 17%Solar 7%

Transfers · Wed 21 Apr

Interconnectors and storage

On Wednesday 21 April 2021, Great Britain imported 35 GWh and exported 16 GWh through its interconnectors. The most came from Belgium (21 GWh), and the most exports went to Ireland (9 GWh).

All interconnectors

Wed 21 Apr
Imported
35GWh
Exported
16GWh
Net in
19GWh
Average net flow
0.77GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.80GWImporting

In 20.5 GWhOut 1.4 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average0.35GWImporting

In 14.3 GWhOut 6.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.37GWExporting

In 0.0 GWhOut 8.9 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 3.6 GWhPumped 2.9 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.