Get the current carbon intensityGet the carbon intensity of electricity right now, in grams of CO2 per kilowatt-hour, for Great Britain, England, Scotland, Wales, one of 14 regions or a postcode: the forecast for the half hour happening now, with an index from very low to very high to act on, such as running something only when it is low. No API key required.
Get the carbon intensity forecastGet the half-hourly carbon intensity forecast for up to 48 hours ahead, from now or a given start, for Great Britain, a country, a region or a postcode: every half hour with its forecast and index, the average, and the lowest and highest half hours. NESO forecasts about two days ahead, and the result says where the forecast stops. No API key required.
Find the lowest-carbon time to use electricityFind when to run something that uses electricity for a set time, such as charging a car, a wash or a batch job, so that it uses the lowest-carbon electricity: the start, within the next 24 hours or a window of up to 48 as far as NESO's forecast reaches, with the lowest average carbon intensity for Great Britain, a country, a region or a postcode. Says how long to wait, how much lower it is than starting at the earliest start (now, unless one is given), and whether now is already the best time. No API key required.
Get carbon intensity for a periodGet every half hour of carbon intensity between two times up to 14 days apart, for Great Britain, a country, a region or a postcode: past figures, with NESO's estimated actuals for Great Britain, or forecasts ahead. Also returns the averages and the lowest and highest half hours, and any spans without figures. Records go back to September 2017 for Great Britain and May 2018 for regions. No API key required.
Get carbon intensity statisticsGet Great Britain's highest, average and lowest carbon intensity over a period of up to 30 days, with the service's index for the average, and optionally the same for each block of 1 to 24 hours in it, such as each day. Past half hours count at NESO's estimated actual and future ones at their forecast. No API key required.
Get the generation mixGet the mix of fuels electricity is generated from, in percent (wind, solar, nuclear, gas, biomass, hydro, imports, coal and other), for Great Britain, a country, a region or a postcode: for the current half hour, the half hour a given time falls in, or on average over a period of up to 14 days. Also adds up the low-carbon, renewable and fossil shares. No API key required.
Compare regionsCompare the carbon intensity of the 14 regions of Great Britain's electricity network for one half hour, now or at another time the service has figures for: ranked from lowest to highest, each with its index and main fuel, plus England, Scotland, Wales and Great Britain as a whole. No API key required.
Estimate the emissions of electricity useEstimate the CO2 that comes with using some electricity over a period of up to 31 days, such as a car's charging session or a month of meter readings, for Great Britain, a country, a region or a postcode. The energy is taken as used evenly over the period, and each half hour counts at NESO's estimated actual carbon intensity where there is one, otherwise its forecast. Time the service has no figures for counts at the average of the rest, and the result says how much that was. No API key required.
Get carbon intensity factorsGet the carbon intensity NESO counts for each kind of generation and import, in grams of CO2 per kilowatt-hour: coal, oil, gas (open and combined cycle), biomass, imports from each neighbouring country, and the zero-carbon sources such as nuclear, wind, solar and hydro. No API key required.
