We are becoming a separate company

In April 2019, the Electricity System Operator is becoming a separate company within the National Grid Group. Find out more about what this change will mean.

BM start up

The BM start up service gives us on-the-day access to additional generation. The service is open to any Balancing Mechanism (BM) participants who expect to be unavailable within BM timescales of 89 minutes.

Market information on the utilisation of BM start up contracts is available through SONAR (System Operator Notification and Reporting System).

SONAR is a web based bulletin board for the provision of near to real time data on information and actions taken outside the BM with respect to system operation.