Electricity Live

Great Britain’s electricity on Tuesday 20 April 2021

On Tuesday 20 April, demand averaged 31.7 GW. Renewables supplied 14%.

31.7GW AVERAGEWind1.58 GW5%Hydro0.41 GW1%Biomass2.32 GW7%Solar2.50 GW8%Gas19.41 GW59%Coal0.48 GW1%Imports1.61 GW5%Nuclear4.67 GW14%31.7GW AVERAGE7%8%59%14%
Price
£62.26/MWh
Day average £62.26
Demand31.7GW
Generation 31.4Transfers 0.3
Fossil fuels59%
Renewables14%
Other26%
Carbon intensityHigh
262g/kWh
0Day average 262300
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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 Tuesday 20 April 2021, gas supplied 59% of Great Britain’s electricity and nuclear 14%. Demand peaked at 37.0 GW at 09:30. Carbon intensity averaged 262 g/kWh and the price £62.26/MWh. Wind generation peaked at 2.5 GW at 17:55. Solar generation peaked at 8.2 GW at 11:30. Carbon intensity was lowest at 14:00 (218 g/kWh) and highest at 06:30 (308 g/kWh). The wholesale price ranged from £44.81/MWh at 04:30 to £90.02/MWh at 07:30. Gas made 62% 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 2.507.6%Wind 1.584.8%Gas 19.4158.9%Hydro 0.411.2%Biomass 2.327.0%Nuclear 4.6714.2%Coal 0.481.5%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 31.7avgGeneration 31.4avgTransfers 0.3avg
The day in figurespeaks, averages, totals
Peak demand37.0GW · 09:30
Low 23.9 · 01:25Avg 31.70–40 GW
Made in Great Britain99%of demand
Generation 31.4Transfers 0.3 GW
Net imports7GWh
In
33 Out
27
Zero-carbon share29%of generation
Nuclear 15%Hydro 1%Wind 5%Solar 8%

Transfers · Tue 20 Apr

Interconnectors and storage

On Tuesday 20 April 2021, Great Britain imported 33 GWh and exported 27 GWh through its interconnectors. The most came from Belgium (20 GWh), and the most exports went to Ireland (17 GWh).

All interconnectors

Tue 20 Apr
Imported
33GWh
Exported
27GWh
Net in
7GWh
Average net flow
0.27GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.81GWImporting

In 20.2 GWhOut 0.8 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average0.19GWImporting

In 13.2 GWhOut 8.6 GWh

Ireland

Moyle · East–West · Greenlink

Average0.73GWExporting

In 0.0 GWhOut 17.4 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

Average0.01GWGenerating

Generated 5.2 GWhPumped 5.0 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.