We are a separate company

On 1 April the Electricity System Operator became a legally separate company within the National Grid Group. Find out more about what this change means.

Transmission performance reports

These reports show how well system operation has fared through auditors' assessment of our processes and also by quantifying key reliability measures. The Winter and Summer Outlook reports provide forecasts of the anticipated supply/demand for electricity over the coming period.

You can access the Winter Outlook and Summer Outlook reports in the Insights section of our website.