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Datasets (9)
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Ancillary services
Aggregated Balancing Services Adjustment Data (BSAD)
Balancing Services Adjustment Data (BSAD) is used to submit balancing actions to the Balancing & Settlement Code (BSC), which defines the rules and governance for the balancing mechanism and…
  • CSV
Ancillary services
Balancing Services Adjustment Data (BSAD) Forward Contracts
Balancing Services Adjustment Data (BSAD) is used to submit balancing actions to the Balancing & Settlement Code (BSC), which defines the rules and governance for the balancing mechanism and…
  • CSV
Ancillary services
Disaggregated Balancing Services Adjustment Data (BSAD)
Balancing Services Adjustment Data (BSAD) is used to submit balancing actions to the Balancing & Settlement Code (BSC), which defines the rules and governance for the balancing mechanism and…
  • CSV
Ancillary services
Non-BM ancillary service dispatch platform (ASDP) instructions
The NG ESO publishes non-BM instruction data from our ASDP system once instructions have been confirmed by Service Providers. This information is then continuously published throughout the day on…
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  • CSV
Constraint management
Day Ahead Constraint Flows and Limits
A snapshot of the limits and flows at relevant boundaries at day ahead stage. These flow values are true for when the measurement was taken and will not reflect any changes in the flows following the…
  • 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…,…
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  • PNG
  • CSV
Constraint management
Thermal Constraint Costs
Thermal constraints are taken when the amount of energy that would flow naturally from one region to another exceeds the capacity of the circuits connecting the two regions. This dataset provides…
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Constraint management
Voltage System Costs
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…
  • XLSX
  • CSV
  • XLSM
Ancillary services
Firm Frequency Response (FFR) Post Tender Reports
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…