Overview – Autumn 2022
In July 2022, we started work to build the northern section of the Hinkley connection between Sandford and Seabank substations.
We’re building 68 new T-pylons for part of the route between Sandford and Portbury, and new traditional lattice pylons through Avonmouth to make the final connection into Seabank substation.
By using the innovative T-pylon design, the height of the new infrastructure is being reduced by a third. Standing at around 35 metres high – the T-pylon is third shorter than traditional 400,000 volt steel lattice pylons which stand at around 48 metres. It also has a smaller footprint and uses less land.
To make for and reduce the visual impact of the new pylons, National Grid is removing 67 kilometres of existing 132,000 volt lattice pylons and overhead wires, a total of 249 pylons will go from the Somerset landscape.
So far, we’ve removed a line of lattice pylons between Nailsea and Portishead, 37 kilometres of pylons between Bridgwater and Sandford, and a short section from across the M49 near Avonmouth. Programme for removal in 2023, is the eight pylons closest to Sandford substation, and the long line that runs from Sandford to Avonmouth.
Thank you from everyone working on the project for your patience and understanding as we progress this vital work to connect six million homes and businesses to new sources of homegrown, low carbon energy.
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Take a look at our detailed map