NESO Data Portal

• Search datasetsSearch the datasets on the NESO Data Portal by words, topic, tags and file format, sorted by best match, last update or title: each with its topic, tags, licence, update frequency, how many files and data tables it has, and its page. No API key required.
• Get a datasetGet one NESO dataset with every file in it: what it holds, its topic, tags, licence and update frequency, and each file's id, format, download address, last change and whether it is a data table that 'Read rows' can read. A dataset NESO doesn't have comes back with 'found' set to false. No API key required.
• Get a data fileGet one file of a NESO dataset by its id: its name, format, download address, whether it is a data table, when its data last changed, and its dataset and licence. NESO asks for this check before reading a table again, so a scheduled workflow reads only when something changed. A file NESO doesn't have comes back with 'found' set to false. No API key required.
• List topicsList the topics NESO files its datasets under, such as Demand, Generation, Balancing costs and Interconnectors, each with what it covers and how many datasets it holds. No API key required.
• Read rows from a data tableRead rows from any NESO data table: pick a dataset and one of its tables, then match columns to values, search for words, choose columns, sort and page. Every column comes described, with its unit, and a row with a settlement date and period also gets the half hour's start and end in UTC. NESO asks for at most two of these data reads a minute. No API key required.
• Run a SQL queryRun your own read-only SQL SELECT on NESO's data tables, for date ranges, sums, averages and joins: tables by their id and columns by their id, in double quotes. Up to 1,000 rows come back, and a row with a settlement date and period also gets the half hour's start and end in UTC. NESO asks for at most two of these data reads a minute. No API key required.
• Get national demandGet Great Britain's measured electricity demand half hour by half hour: national and transmission demand, England and Wales, and the estimated output of embedded wind and solar, for the latest day (today so far) or up to 31 days back to 2001. Comes with the peak, the low, the average and the latest half hour. NESO asks for at most two of these data reads a minute. No API key required.
• Get interconnector flowsGet the measured flow on each of Great Britain's interconnectors to France, Belgium, the Netherlands, Norway, Denmark and Ireland, half hour by half hour, for the latest day or up to 31 days: imports, exports and the net, with each interconnector's latest, average and largest flows. NESO asks for at most two of these data reads a minute. No API key required.
• Get the generation mixGet Great Britain's electricity generation by fuel, in MW and as a share: gas, nuclear, wind, solar, biomass, hydro, imports and more, with the carbon intensity and the renewable, low-carbon and fossil totals, for the latest half hour or any period back to 2009 (up to 31 days at a time). NESO asks for at most two of these data reads a minute. No API key required.
• Get the demand forecastGet NESO's latest 2 to 14 day national demand forecast, half hour by half hour for up to two weeks ahead (updated twice a day), with the forecast peak and low. NESO asks for at most two of these data reads a minute. No API key required.
• Get the long-term demand forecastGet NESO's long-term demand forecast, week by week for up to 52 weeks: each week's peak transmission demand and the day it falls on, and its daytime and overnight lows. NESO asks for at most two of these data reads a minute. No API key required.
• Get the embedded wind and solar forecastGet NESO's forecast of the wind and solar generation on the distribution network, which it can't meter and which lowers demand: half hour by half hour for up to 14 days, with capacity and the solar and wind peaks. NESO asks for at most two of these data reads a minute. No API key required.
• Get the wind forecastGet NESO's forecast of the output of the wind farms it meters, half hour by half hour for up to 14 days, with their capacity, the share of it in use, and the highest and lowest half hours. Updated eight times a day. NESO asks for at most two of these data reads a minute. No API key required.
• Get balancing costsGet what NESO spent balancing Great Britain's electricity system, half hour by half hour and day by day: energy imbalance, frequency control, reserve, constraints and other costs in pounds, for the latest day published (about a week behind) or up to 31 days back to 2017. NESO asks for at most two of these data reads a minute. No API key required.

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