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Datasets (10)
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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…
  • PDF
  • 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…
  • CSV
Balancing costs
Daily Balancing Services Use of System (BSUoS) Cost Data
The BSUoS charge recovers the cost of day-to-day operation of the transmission system. Generators and suppliers are liable for these charges, which are calculated daily as a flat tariff for all users…
  • CSV
Balancing costs
Great Britain System Inertia Bid and Offer Costs
This dataset provides indicative values for the average daily price (in £ per GVAs) for BM accepted offers tagged as being for System Inertia. It also includes the cost of bid actions required to…
  • XLSX
  • CSV
  • PDF
Balancing costs
Monthly Balancing Services Use of System (BSUoS) Forecast Data
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
  • PDF
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…
  • CSV
Trading
Super Stable Export Limit Contract Enactment
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…
  • CSV
Constraint management
Year Ahead Constraint Limits
This dataset contains a year ahead Mega Watt constraint limits for the main boundaries on the transmission system., NOTE:, This dataset has now been replaced by the "24 Months Ahead Constraint…