Welcome to the National Grid ESO Data Portal

Data on services that balance demand and supply including Fast Reserve, Firm Frequency Response and STOR

Data on forecast and historic balancing costs, including BSUoS and Balancing services charging reports.

Data providing an indicative trend of regional and national carbon intensity of the GB electricity system. View the Carbon Intensity dashboard

Data showing the latest contracted position, published twice weekly

Data on historic costs and forecast constraint volumes. Required when the system is unable to transmit power to a demand location due to transmission network congestion.

Forecast and historic data for demand, interconnectors, pump storage pumping, wind and solar generation.

Get data for our test and live DFS events. This is a new service giving extra flexibility during peak winter demand periods. Consumers are incentivised to flex when they use their electricity. More about DFS

Data on a range of different ways to de-carbonise and shape the future energy system, working towards the 2050 target. More about FES

Forecast volumes and cost for reserve margin, wind generation and generation by fuel type.

Data relating to operational restrictions limiting interconnector flows connected to GB.

TNUoS tariffs and publications associated with TNUoS revenue and charges.

Other data including information supporting our Operational Transparency Forum.

System-wide data including historic system frequency data.

We trade power exchange, forward energy and balancing contracts to meet forecast energy needs, in advance of the balancing mechanism.