Sources
Where our data comes from
energy.org.uk publishes no data of its own. Everything here comes from the organisations that run and regulate Britain's energy system, retrieved directly from their published feeds. This page lists each dataset, what it is used for and how often it updates. How the figures are combined is set out on the methodology page.
Elexon (BMRS)
Elexon runs the settlement of the Great Britain electricity market and publishes the operational data behind it.
FUELINST: generation by fuel type
The live generation mix: wind, gas, nuclear, biomass, hydro, coal, oil, other and pumped storage.
- Updates:
- About every 5 minutes
- Covers:
- Transmission-connected plant, Great Britain
FUELINST: interconnector rows
Live signed flows on every cable to France, Norway, Denmark, the Netherlands, Belgium, Ireland and Northern Ireland.
- Updates:
- About every 5 minutes
- Covers:
- Great Britain boundary
System demand
Official transmission-boundary demand, shown as context alongside our own accounted total.
- Updates:
- Half-hourly
- Covers:
- Great Britain
System frequency
Live grid frequency.
- Updates:
- Sub-minute
- Covers:
- Great Britain
Market index and system prices
Wholesale electricity price and balancing system prices.
- Updates:
- Half-hourly settlement periods
- Covers:
- Great Britain
AGWS / B1630: actual wind and solar generation
Settlement wind and solar outturn charts. Kept separate from the live snapshot because it lags by hours.
- Updates:
- Half-hourly, published with a delay
- Covers:
- Great Britain
NESO: National Energy System Operator
NESO operates the Great Britain electricity system and publishes forecasts and estimates of the generation that meters at the transmission boundary cannot see.
Demand Data Update
Estimated embedded (distribution-connected) solar and wind output, and national demand figures.
- Updates:
- Half-hourly settlement periods
- Covers:
- Great Britain
Embedded Wind and Solar Forecast
Fallback embedded solar figure when the estimated outturn is not yet published; always labelled as a forecast.
- Updates:
- Half-hourly, forecast
- Covers:
- Great Britain
Demand and renewables forecasts
Day-ahead demand and renewable output forecast charts.
- Updates:
- Daily and intraday updates
- Covers:
- Great Britain
Carbon Intensity API (NESO)
The official carbon intensity service for Great Britain, developed by NESO with the University of Oxford.
National and regional carbon intensity
Current and forecast grams of CO₂ per kWh, nationally and for your postcode area.
- Updates:
- Half-hourly
- Covers:
- Great Britain and its 14 regions
National Gas Transmission
Operator of the national gas transmission system, publishing live flows onto and off the network.
Instantaneous flow data
Live gas supply, demand, linepack and flow at each entry point and terminal.
- Updates:
- Observations every ~2 minutes, published in sets every ~12 minutes
- Covers:
- Great Britain transmission system
Ofgem
The energy regulator for Great Britain, which sets the default tariff (price) cap.
Energy price cap: final levelised cap rates model (Annex 9)
Every unit rate and standing charge shown on the prices page, by region, payment method and meter type, plus the typical consumption benchmark.
- Updates:
- Quarterly cap periods
- Covers:
- England, Scotland and Wales
DESNZ: Department for Energy Security and Net Zero
The UK government department responsible for energy statistics and project records.
Renewable Energy Planning Database (REPD)
Operational renewable electricity projects near a postcode, with installed capacity and distance.
- Updates:
- Updated periodically by DESNZ
- Covers:
- United Kingdom
Postcodes.io / ONS
Open postcode lookup built on Ordnance Survey and Office for National Statistics open data.
Postcode lookup
Turning a postcode into coordinates and the region used for carbon intensity, prices and nearby projects.
- Updates:
- On request
- Covers:
- United Kingdom
Attribution and reuse
Each dataset remains the property of the organisation that publishes it and is used under its own terms. Figures on this site are attributed to their original source at the point they are shown. Where an upstream organisation revises its published data, the figures here change with it.