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.

Charging guidance

On this page you will find guidance materials to help you understand how, when and what you'll be charged. 


Below are a selection of webinars, these share the same content that was discussed and shared at our Charging and Settlements forums in October 2018.

1) TNUoS Tariffs and Forecasting [click here to watch] (length: 45 minutes)
2) TNUoS Charging and Billing [click here to watch] (length: 15 minutes)
3) BSUoS Reporting and Forecasting [click here to watch] (length: 15 minutes)
4) BSUoS Billing [click here to watch] (length: 20 minutes)


Would you like to get involved?

We host a variety of forums and sessions through the course of the year and you're welcome to get involved. 

If you'd like to receive regular updates on TNUoS and BSUoS, including invitations to our forums and training sessions, please click here to subscribe to our e-newsletters.

A group of people discussing paperwork

Charging policy developments

Includes open letter consultations and guidance, charging methodology policy decisions, electricity industry information guides, and Triads data.

Find out more

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Charging statements

TNUoS recovers the cost of installing and maintaining the transmission system. These charges apply to suppliers and generators.

Find out more