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Ancillary services
In our role as Electricity System Operator (ESO), we balance generation and demand in real time. When demand is low, there may be a requirement for additional flexibility to balance generation and…
- ZIP
- CSV
Ancillary services
As part of our work on developing our balancing services we ran a weekly trial auction for Firm Frequency Response. The weekly auction trial results and order hash data are available here., Note:,…
- XLSX
- 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…
- CSV
Interconnectors
These are the values submitted by NGESO to the interconnector capacity calculation processes which restrict the maximum GB import and export interconnector flows. The values are submitted in MW per…
- 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…
- XLSX
- CSV
Balancing costs
The Balancing Services Use of System (BSUoS) costs are reported on a monthly basis with a forecast for the next month and a rolling 24 month period. Here you can find the data for the 24 month ahead…
- CSV
Interconnectors
These are the values submitted by NGESO 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
These are the values submitted by NGESO to the interconnector capacity calculation processes which restrict the maximum GB import and export interconnector flows. The values are submitted in MW per…
- XLSX
- CSV
Ancillary services
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…
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