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.

​System operator to system operator (SO to SO)

SO to SO services are provided mutually with other transmission system operators connected to Britain's transmission system via interconnectors.

Britain's electricity market connects to continental Europe via interconnectors, which are electricity transmission assets that allow electricity to be traded between these markets.

This trading determines the direction of electricity flow. There may be instances when the system operator needs to adjust these interconnector flows closer to real time, via system operator to system operator (SO to SO) services.

Who can provide this service?

SO to SO services can only be provided across electricity interconnectors.