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Datasets (11)
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Data Portal changes and known issues
Data Portal: Planned Changes & Known Issues
Here you will find details of upcoming changes to the NESO Data Portal along with any known issues that we are working to resolve. If you have encountered any issues not captured in this table please…
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System
System Inertia
This dataset contains an estimate of the outturn inertia and market provided inertia for Great Britain Transmission System.
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System
System Operating Plan (SOP)
As part of our daily planning processes within the ESO control room, the control room strategy team produces a System Operating Plan (SOP) at key demand peaks or troughs throughout the day, at what…
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System
Stability Pathfinder service information
This dataset gives indicative information on the availability and utilisation of Stability Pathfinder contracts. The information is provided at a settlement period resolution for all contracted units…
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System
System Frequency
This page holds the historic system frequency data for Great Britain at a 1 second resolution. It is the role of the National Grid ESO to keep the system frequency at 50 Hz, with a statutory limit of…
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Network charges
Transmission Network Use of System (TNUoS) Tariffs
This dataset contains a breakdown of all the Transmission Network Use of System (TNUoS) tariff elements of which are forecasted and set by the revenue team at National Grid ESO. These files will be…
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  • GeoJSON
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  • TXT
System
GIS Boundaries for GB Grid Supply Points
This dataset contains approximate GIS (Geographic Information System) geospatial boundaries associated with each of the Grid Supply Points (GSPs) on the GB transmission network. GSPs are points of…
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System
System Inertia Cost
This data set gives indicative values for the average daily price (in £ per GVAs) for BM accepted offers tagged as being for System Inertia. The tagging process identifies the most likely main reason…
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  • GeoJSON
  • PNG
System
GIS Boundaries for GB DNO Licence Areas
This dataset contains approximate GIS (geographic information system) geospatial boundaries for each of the DNO Licence Areas in Great Britain. There are 14 licensed Distribution Network Operators (…
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Network charges
Assistance for Areas of High Electricity Distribution Costs (AAHEDC) Tariffs
This dataset contains a breakdown of all the Assistance for Areas of High Electricity Distribution Costs (AAHEDC) Tariffs elements which are forecasted and set by the revenue team at National Grid…