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Datasets (13)
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Trading
Upcoming trades
This dataset displays all upcoming electricity trades due to be delivered. To meet our forecast balancing requirements at minimum cost, we trade energy-related products. The data is refreshed every…
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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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Trading
Interconnector Requirement and Auction Summary Data
National Energy System Operator (NESO) trades on interconnectors to adjust the flow of electricity into or out of Great Britain to help manage system issues such as thermal, voltage or stability…,…
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Trading
Historic GTMA (Grid Trade Master Agreement) Trades Data
This dataset contains data for historic GTMA (Grid Trade Master Agreement) trades conducted since April 2015. The data includes the trade ID, start and end time and date, the volume in MW, the price…
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  • ZIP
  • CSV
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…
  • CSV
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…
  • CSV
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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  • GeoJSON
  • CSV
  • 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…
  • CSV
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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  • ZIP
Trading
Index Linked Contracted Energy Volume
Index Linked Contract can be used by National Grid ESO to meet the voltage voltage requirement . The contract is normally enacted in the morning ahead of the power exchange auction. The generator…