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ESO content (13)
Balancing services
We use several techniques and services to help maintain the security and quality of electricity supply across Britain's transmission system. Here you can find out about system security…
Balancing services
We will approach potential service providers directly if a specific requirement is identified. Intertrip services are required as an automatic control arrangement where generation may be reduced or…
Balancing services
SO to SO services are provided mutually with other transmission system operators connected to Britain's transmission system via interconnectors.
Balancing services
Find out about the different types of existing frequency response services and how to get involved.
Balancing services
This page holds historic frequency data for Great Britain at a 1 second resolution. N.B. 2019 data was updated on 14/2/2020 to correct for errors.
Data for 2020 onwards will be published on the…
Balancing services
Having launched our new Dynamic Response Services, Dynamic Containment (DC), Dynamic Moderation (DM) and Dynamic Regulation (DR), we are aiming to lift the volume caps on DM and DR to allow our…
Balancing services
As part of the rationalisation of balancing services, we are no longer actively procuring the Max Gen service. Contracts currently in place with stations, will continue until station closure of if…
Balancing services
Mandatory frequency response (MFR) is an automatic change in active power output in response to a frequency change. The service helps us to keep frequency within statutory and operational limits.…
Balancing services
Firm Frequency Response (FFR) is our traditional frequency response suite used for balancing grid frequency in real time. Static FFR will continue to be actively procured until replaced with a…
Balancing services
Constraint management is required where the electricity transmission system is unable to transmit power to the location of demand, due to congestion at one or more parts of the transmission network…