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Datasets (7)
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Demand
The historic half hourly day ahead national demand forecast as published via BM reports, alongside the outturn values, adjustments for TRIAD avoidance estimates and Absolute Percentage Error (APE)…
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Constraint management
To give greater insight on balancing decisions, this post monthly report provides outturn system costs for maintaining voltage levels on the network. Maintaining the electricity system at the correct…
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Demand Flexibility Service
Winter 2022/23 Data, The Demand Flexibility Service (DFS) has been developed to allow the ESO to access additional flexibility when the national demand is at its highest – during peak winter days –…
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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…
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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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System
This dataset contains an estimate of the outturn inertia and market provided inertia for Great Britain Transmission System.
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Trading
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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