Search results
Filter by
Search Content
Datasets (115)
  • CSV
Electricity Market Reform
Capacity Market Register
The EMR Delivery Body (DB) has an obligation to create and maintain Capacity Market Registers (CMR) for all capacity market auctions. Each CMR holds a record of all applications made to the Delivery…
  • CSV
Interconnectors
BritNed - NESO's Intraday Trading Limit
These are the values submitted by NESO to the interconnector capacity calculation processes which restrict the maximum GB import and export interconnector flows. The values are submitted in MW per…,…
  • CSV
Interconnectors
NemoLink - NESO's Net Transfer Capacity
These are the values submitted by NESO to the interconnector capacity calculation processes which restrict the maximum GB import and export interconnector flows. The values are submitted in MW per…,…
  • CSV
Interconnectors
IFA2 - NESO's Intraday Transfer Limit
These are the values submitted by NESO to the interconnector capacity calculation processes which restrict the maximum GB import and export interconnector flows. The values are submitted in MW per…,…
  • CSV
Interconnectors
IFA - NESO's Intraday Transfer Limit
These are the values submitted by NESO to the interconnector capacity calculation processes which restrict the maximum GB import and export interconnector flows. The values are submitted in MW per…,…
  • CSV
Demand
Transmission Losses
There are a number of factors which influence transmission losses.  These include variations in zonal generation patterns, growth in northern vs southern generation, level of Scottish exports to…
  • XLSX
  • PDF
  • CSV
Ancillary services
Obligatory Reactive Power Service (ORPS)
The obligatory reactive power service (ORPS) is the provision of varying reactive power output. At any given output generators may be requested to produce or absorb reactive power to help manage…,…
  • CSV
Ancillary services
Short Term Operating Reserve (STOR) Windows
This dataset sets out the Short Term Operating Reserve (STOR) committed windows from Season 15 to Season 19 applicable from 1 April 2021 to 1 April 2026. These seasons define the committed windows…
  • 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…
  • CSV
Demand
Long Term (2-52 weeks ahead) National Demand Forecast
This dataset contains incremental updates for 2-52 weeks ahead demand forecast. The forecast assist the industry to make efficient decisions in balancing their supply and demand positions.