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Datasets (15)
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Trading
Super Stable Export Limit (SEL) is utilised to directly decrease the sum of the minimum MW level or SEL of generators synchronized to the system by lowering the minimum generating level at a…
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- CSV
- XLSM
Ancillary services
The Firm Frequency Response (FFR) post tender reports are published following each monthly tender. They indicate which tenders were accepted and rejected and the information submitted for these…
- ZIP
- GeoJSON
Network charges
This dataset contains approximate GIS (geographic information system) geospatial boundaries for each of the TNUoS generation zones in Great Britain. There are 27 TNUoS generation zones, and each is…
- XLSX
- CSV
Ancillary services
Frequency Response Products Market Information Report aims to give guidance on the response products requirement and updates on recent changes to procurement of those products.
- XLSX
- CSV
Balancing costs
The MBSS gives the costs and volumes of balancing services used by the ESO. These costs are broken into individual months in the past financial year, as well as by each individual service. The most…
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- GeoJSON
- PNG
System
This dataset contains approximate GIS (geographic information system) geospatial boundaries for each of the DNO License Areas in Great Britain. There are 14 licensed Distribution Network Operators (…
- CSV
Future Energy Scenarios
We have been working with the other network companies as part of the Energy Networks Association (ENA) Open Networks project. The Whole System Electricity Future Energy Scenarios (FES) part of this…
- ZIP
- GeoJSON
- CSV
System
This dataset contains approximate GIS (Geographic Information System) geospatial boundaries associated with each of the Grid Supply Points (GSPs) on the GB transmission network. The boundaries have…
- CSV
System
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…
- CSV
Ancillary services
As part of Clean Energy Package (CEP) 6.9 we will be running daily auction for procurement of Short Term Operating Reserve (STOR). The daily results from the auction are available here.
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