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.

Balancing services

We procure services to balance demand and supply and to ensure the security and quality of electricity supply across Britain's transmission system. 

To see a comprehensive list of balancing services and related areas, please go to the List of all balancing services page.

Frequency response services

Our licence obligation is to control system frequency at 50Hz plus or minus 1%. Find out how to work with us.

Find out more

Reserve services

Find out how we access sources of extra power, so we can manage unforeseen demand increase or generation unavailability.

Find out more

System security services

Find out about the techniques and services we use to help maintain the security and quality of electricity supply across Britain's transmission system.

Find out more


Power exchange trades, forward trades, and balancing contract enactment to meet forecast requirements at minimum cost in advance of the balancing mechanism.

Find out more

Reactive power services

The flows of reactive power on the system affect voltage levels. Find out about the services we use to manage this.

Find out more

Demand side response (DSR)

Demand side response (DSR) is all about intelligent energy use. Find out how DSR can help business and consumers save on total energy costs and reduce their carbon footprint.

Find out more


Find the forms you need to set up or change bank details with us, to change a reactive meter, change a contact or want to find out about statements, estimates and invoicing.

Find out more

Future of balancing services

A smart, flexible system that makes the best use of all the energy resources available will enable us to meet our customers’ needs in a balanced, efficient and economical way.

Find out more