Cable pull through the Mendips AONB is complete

In February 2021, National Grid’s contractor, Balfour Beatty, started to install 8.5 kilometres of underground cables across the Mendip Hills Area of Outstanding Natural Beauty (AONB) – ten months on, the work is complete and a total of 102 kilometres of cable has been installed along the 8.5 kilometre route – the equal distance between Bridgwater and Gloucester.

Work to join and test the cables that run from a new cable sealing end compound at Loxton to the new substation at Sandford continues. We are preparing to energise the 400kV cables later in 2022, with reinstatement along the route expected to be complete by 2024.

View our animation which explains the engineering process and to see what’s involved in the construction of these underground cables.