Control centre
Our control centre

As part of our role helping to connect millions of people to the electricity they use, we operate the Transmission Network Control Centre (TNCC).


Our control centre engineers work hard to keep the electricity flowing in Britain, ensuring energy is safely moved around the network to get to where it’s needed.

The TNCC operates 24/7, 365 days a year and is where our engineers remotely control the operations of the high-voltage electricity transmission system in real time. They monitor over 7,000km of overhead line, over 300 substations and over 700km of underground cable, to locate any faults or issues and take appropriate action to ensure that electricity continues to flow. 

Our engineers coordinate key customers who connect to our network – such as the Distribution Network Operators (DNOs) – before and during the event. They are also connected with the wider industry,  including organisations such as Ofgem or the Department for Business, Energy and Industrial Strategy (BEIS), to provide critical network updates and emergency support where needed.