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 later, the installation of high voltage, 400kV cables under the Mendip Hills AONB is complete. In total, the team has pulled a total of 102 kilometres cables (the distance between Bridgwater and Gloucester) since the work started.
Work now continues with joining and testing the cables that run from a new cable sealing end compound at Loxton to the new substation at Sandford.
We expect to energise the cables later in 2022. Full reinstatement and completion of the underground cabling work is expected by 2024.
Visit our 'In pictures: Mendip Hills cable pull completed' page, to find out more about the engineering process and watch an animation to see what’s involved in the construction of these underground cables.