Electricity Live

Great Britain’s electricity on Saturday 17 May 2025

On Saturday 17 May, demand averaged 25.4 GW. Renewables supplied 43%.

25.4GW AVERAGEWind7.29 GW27%Hydro0.15 GW1%Biomass0.97 GW4%Solar4.08 GW15%Gas4.54 GW17%Imports4.62 GW17%Nuclear5.22 GW19%25.4GW AVERAGE27%15%17%17%19%
Price
£64.33/MWh
Day average £64.33
Demand25.4GW
Generation 22.3Transfers 3.1
Fossil fuels17%
Renewables43%
Other40%
Carbon intensityLow
88g/kWh
0Day average 88300
Save as image
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 Saturday 17 May 2025, wind supplied 27% of Great Britain’s electricity and nuclear 19%. Demand peaked at 29.9 GW at 12:35. Carbon intensity averaged 88 g/kWh and the price £64.33/MWh. Wind generation peaked at 8.9 GW at 22:20. Solar generation peaked at 12.8 GW at 14:00. Carbon intensity was lowest at 14:00 (35 g/kWh) and highest at 19:00 (132 g/kWh). The wholesale price ranged from −£0.37/MWh at 15:00 to £102.89/MWh at 20:30. The price was below zero for 0.5 hours. Wind made 33% of the electricity generated in Great Britain, compared with 35% across 2025.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 4.0815.2%Wind 7.2927.1%Gas 4.5416.9%Hydro 0.150.6%Biomass 0.973.6%Nuclear 5.2219.4%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 25.4avgGeneration 22.3avgTransfers 3.1avg
The day in figurespeaks, averages, totals
Peak demand29.9GW · 12:35
Low 19.7 · 05:10Avg 25.40–30 GW
Made in Great Britain88%of demand
Generation 22.3Transfers 3.1 GW
Net imports76GWh
In
110 Out
34
Zero-carbon share75%of generation
Nuclear 23%Hydro 1%Wind 33%Solar 18%

Transfers · Sat 17 May

Interconnectors and storage

On Saturday 17 May 2025, Great Britain imported 110 GWh and exported 34 GWh through its interconnectors. The most came from France (64 GWh), and the most exports went to Ireland (23 GWh).

All interconnectors

Sat 17 May
Imported
110GWh
Exported
34GWh
Net in
76GWh
Average net flow
3.18GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.12GWImporting

In 6.6 GWhOut 3.7 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.66GWImporting

In 63.9 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.95GWExporting

In 0.0 GWhOut 22.8 GWh

Netherlands

BritNed

Average0.01GWExporting

In 6.9 GWhOut 7.2 GWh

Norway

North Sea Link

Average1.36GWImporting

In 32.7 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.09GWPumping

Generated 0.6 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.