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Codes
You can raise a modification – or mod – when you want to propose a change to any part of the SQSS. For more information or for help raising an SQSS modification, please contact box.SQSS@…
Codes
Here you will find the electrical standards documents including specifications for electronic data communications facilities that apply to transmission-connected generators in England, Wales, and…
Balancing services
The majority of energy trading is done ahead of time between suppliers and generators, and later refined in the spot markets closer to real time. Following this, we ensure that supply meets…
Balancing services
Reactive power services are how we make sure voltage levels on the system remain within a given range, above or below nominal voltage levels. We instruct generators or other asset owners to either…
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 services…
Balancing services
At certain times of the day, we need access to sources of extra power in the form of either increased generation or demand reduction. This enables us to manage a greater than forecast…
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 NESO…
Energy 101
Comparison sites, direct mail, someone vying for your attention as you leave the supermarket – you will, at some point, have been encouraged by money saving claims …