Nailsea to Tickenham

Current construction activity

Date from

Date to

Activity

June 2021

Late 2024

Access to public footpaths and rights of way

May 2021

2024

Building new T-pylons

January 2020

September 2021

Underground cables

2018

Ongoing

Roadworks and traffic management

 

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.

Contact our community relations team to register for project updates direct to your inbox.
 

Take a look at our detailed map

Nailsea to Tickenham timeline

Early 2020 to late 2021

 

Underground the 132,000 volt overhead line between Nailsea and Portishead substation

What we're doing:

  • Building temporary entrances and access roads to allow construction traffic to enter site from the local highway. You can find more information on our construction information page.

  • Building temporary construction compounds.

  • Building a underground cable between Nailsea and Portishead substation.

  • Building a pylon to connect the existing overhead line at Nailsea to the new underground cable.

The new underground cable section is being built as a direct result of feedback received during our consultation. When it's operational, it will enable us to completely remove the existing 132,000 volt overhead line between Nailsea and Portishead substation that currently runs very close to people’s properties

Mid 2021 to mid 2025

 

Build new 400,000 volt overhead line

What we're doing:

  • In this area, to minimise disruption, we will be sharing temporary construction compounds and temporary entrances and access roads built for other elements of the build.

  • Building a new overhead line from Sandford substation to Seabank substation (approximately 31.2 km).

  • We will use T-pylons in this area.

Mid 2021 to mid 2025

 

Remove existing 132,000 volt overhead lines

What we're doing:

  • Removing approximately 9 km of Western Power Distribution’s (WPDs) existing overhead line between Nailsea and Portishead substation that currently runs very close to people’s properties. We are removing this as a direct result of feedback received during our consultation.

  • Removing WPDs overhead line from the A368 in Sandford to Avonmouth, which will make way for, and minimise the visual impact of, the new connection.