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.

Fast reserve

Fast reserve provides rapid and reliable delivery of active power through increasing output from generation or reducing consumption from demand sources.

Fast reserve is procured via a competitive monthly tender process. Once service providers succeed in the pre-qualification assessment and sign onto a framework agreement, they will be provided with a login to an electronic tender platform. Providers can then tender in for a single month or multiple months.

Tenders must be submitted by the first business day of each month for services starting the following month.

Our main objective is to secure the system economically.

In deciding whether to accept a tender for a month, we consider whether the cost of an accepted tender is likely to be less or greater than the cost of alternatives to deliver the equivalent service in that month.