Electricity Live

Great Britain’s electricity on Tuesday 20 July 2021

On Tuesday 20 July, demand averaged 30.6 GW. Renewables supplied 14%.

30.6GW AVERAGEWind1.24 GW4%Hydro0.18 GW1%Biomass2.39 GW8%Solar2.93 GW9%Gas14.40 GW45%Coal0.82 GW3%Imports4.82 GW15%Nuclear5.09 GW16%30.6GW AVERAGE8%9%45%15%16%
Price
£107.78/MWh
Day average £107.78
Demand30.6GW
Generation 27.0Transfers 3.6
Fossil fuels45%
Renewables14%
Other39%
Carbon intensityHigh
236g/kWh
0Day average 236300
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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 July 2021, gas supplied 45% of Great Britain’s electricity and nuclear 16%. Demand peaked at 37.5 GW at 12:45. Carbon intensity averaged 236 g/kWh and the price £107.78/MWh. Wind generation peaked at 2.0 GW at 15:35. Solar generation peaked at 8.6 GW at 12:30. Carbon intensity was lowest at 11:30 (202 g/kWh) and highest at 22:00 (275 g/kWh). The wholesale price ranged from £72.48/MWh at 04:30 to £151.52/MWh at 19:00. Gas made 53% 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 2.939.2%Wind 1.243.9%Gas 14.4045.2%Hydro 0.180.6%Biomass 2.397.5%Nuclear 5.0916.0%Coal 0.822.6%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 30.6avgGeneration 27.0avgTransfers 3.6avg
The day in figurespeaks, averages, totals
Peak demand37.5GW · 12:45
Low 21.9 · 04:55Avg 30.60–40 GW
Made in Great Britain88%of demand
Generation 27.0Transfers 3.6 GW
Net imports87GWh
In
109 Out
22
Zero-carbon share35%of generation
Nuclear 19%Hydro 1%Wind 5%Solar 11%

Transfers · Tue 20 Jul

Interconnectors and storage

On Tuesday 20 July 2021, Great Britain imported 109 GWh and exported 22 GWh through its interconnectors. The most came from France (64 GWh), and the most exports went to Ireland (22 GWh).

All interconnectors

Tue 20 Jul
Imported
109GWh
Exported
22GWh
Net in
87GWh
Average net flow
3.62GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.96GWImporting

In 23.0 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.66GWImporting

In 63.8 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.92GWExporting

In 0.0 GWhOut 22.2 GWh

Netherlands

BritNed

Average0.92GWImporting

In 22.2 GWhOut 0.0 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.05GWPumping

Generated 6.7 GWhPumped 8.0 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.