On this page you will find data published by National Grid relating to the commercial operation of the electricity transmission system. This data includes cost and volume forecasts and outcomes relating to balancing services, BSUoS, reserve, response and BSIS information.
The data also includes information associated with contract and services reports showing the costs of balancing services and the results of tender assessments.
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BSUoS Forecasts, Ancillary Services and BSIS Forecasts
STOR, Fast Reserve, Fast Start & Frequency Response
Black Start, Constraints, Reactive & Intertrip