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 – Winter 2022

In May 2021, National Grid started work to build the new 400,000 volt overhead connection along the northern section of the Hinkley Connection Project between Sandford and Seabank substations. We are using the world’s first T-pylons for part of the route.

Our contractor, J Murphy and Sons, energised the new underground cables between the west end of Nailsea and Portishead substation in September 2021. This new 132,000 volt underground connection was installed to replace the line Western Power Distribution (WPD) pylons removed from near homes and gardens in October 2021. The aim is to lessen the visual impact of the new 400kV overhead line, featuring T-pylons that will run to the west of Nailsea.

During 2023, we’ll remove the second line of WPD pylons that runs from Sandford to Avonmouth, bringing us a step closer to removing 67 kilometres of WPD’s overhead line by the time the Hinkley Connection Project is completed in 2025.

We recognise that our construction activity impacts local communities and work with our contractors to limit that as much as possible.

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

Take a look at our detail map

Projects 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.