Electricity Live

Great Britain’s electricity on Wednesday 21 July 2021

On Wednesday 21 July, demand averaged 30.6 GW. Renewables supplied 12%.

30.6GW AVERAGEWind0.80 GW3%Hydro0.12 GW0%Biomass2.45 GW8%Solar2.91 GW9%Gas15.32 GW48%Coal0.68 GW2%Imports4.92 GW15%Nuclear4.69 GW15%30.6GW AVERAGE8%9%48%15%15%
Price
£105.85/MWh
Day average £105.85
Demand30.6GW
Generation 27.0Transfers 3.6
Fossil fuels48%
Renewables12%
Other38%
Carbon intensityHigh
243g/kWh
0Day average 243300
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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 July 2021, gas supplied 48% of Great Britain’s electricity and nuclear 15%. Demand peaked at 37.3 GW at 13:05. Carbon intensity averaged 243 g/kWh and the price £105.85/MWh. Wind generation peaked at 2.8 GW at 10:35. Solar generation peaked at 8.6 GW at 13:00. Carbon intensity was lowest at 13:00 (216 g/kWh) and highest at 21:30 (279 g/kWh). The wholesale price ranged from £69.07/MWh at 03:00 to £134.62/MWh at 19:30. Gas made 57% 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 2.919.1%Wind 0.802.5%Gas 15.3248.0%Hydro 0.120.4%Biomass 2.457.7%Nuclear 4.6914.7%Coal 0.682.1%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 30.6avgGeneration 27.0avgTransfers 3.6avg
The day in figurespeaks, averages, totals
Peak demand37.3GW · 13:05
Low 22.0 · 04:55Avg 30.60–40 GW
Made in Great Britain88%of demand
Generation 27.0Transfers 3.6 GW
Net imports90GWh
In
112 Out
22
Zero-carbon share32%of generation
Nuclear 17%Hydro 0%Wind 3%Solar 11%

Transfers · Wed 21 Jul

Interconnectors and storage

On Wednesday 21 July 2021, Great Britain imported 112 GWh and exported 22 GWh through its interconnectors. The most came from France (65 GWh), and the most exports went to Ireland (22 GWh).

All interconnectors

Wed 21 Jul
Imported
112GWh
Exported
22GWh
Net in
90GWh
Average net flow
3.74GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.99GWImporting

In 23.7 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.72GWImporting

In 65.4 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.93GWExporting

In 0.0 GWhOut 22.3 GWh

Netherlands

BritNed

Average0.96GWImporting

In 22.9 GWhOut 0.0 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.14GWPumping

Generated 6.1 GWhPumped 9.4 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.