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System balancing reports

On this page, you will find reports that we publish relating to the commercial operation of the electricity transmission system.

The service reports show the requirements for balancing services and the results of tender assessments. A service by service summary of the cost of balancing services is provided in the monthly balancing services summary (MBSS).

Service reports

The service reports show the requirements for balancing services and the results of tender assessments. A service by service summary of the cost of balancing services is provided in the monthly balancing services summary (MBSS).

Transmission Licence C16 Statements can be found on the Transmission Licence C16 page.

Monthly balancing services summaries (MBSS)

From 2nd March 2020, MBSS files will be published on our new National Grid ESO Data Portal.

Please see link below for the location:

https://data.nationalgrideso.com/balancing/mbss

Daily balancing costs (BSUoS)

From 1st March 2020, Daily balancing costs (BSUoS) files will be published on our new National Grid ESO Data Portal.

Please see link below for the daily historic outturn & forecast file:

https://data.nationalgrideso.com/balancing/bsuos-monthly-cost

Please see link below for the daily balancing costs data files:

https://data.nationalgrideso.com/balancing/balancing-services-use-of-system-bsuos-daily-cost