Puxton to Kenn
Current construction activity
| Date from | Date to | Activity |
| May 2021 | 2024 | Building and energising new T-pylons |
| 2020 | 2024 | Removing existing pylons |
| 2018 | Ongoing | Roadworks and traffic management |
| 2018 | Ongoing | Access to public footpaths and rights of way |
Overview – Autumn 2024
National Grid is in the final stages of completing the northern section of the Hinkley Connection route between Sandford and Seabank substations.
Construction of 68 new T-pylons between Sandford and Portbury is complete, with the wires installed between the diamond-shaped insulators. These innovative new T-pylons have been connected to a new line of 27 lattice pylons running from the Bristol Port area across the River Avon and into Seabank substation.
Teams will now work to test and commission the new T-pylons, as well as the lattice pylons through Avonmouth, in preparation for energisation which is scheduled to take place in 2025.
Work is ongoing to remove temporary haul roads, road accesses and culverts that were built to construct the T-pylons and reinstate the land.
Thank you from everyone working on the project for your patience and understanding as we work to toward completion. This project will play a key role in helping the UK meet its net zero ambitions by transmitting cleaner, homegrown, energy around the UK – enough to power six million homes and businesses.
Puxton to Kenn timeline
Early 2021 to mid 2023
Modifications to the existing 132,000 volt overhead line to Weston-super-Mare
What we are doing:
Building a temporary entrance and access road to allow construction traffic to enter site from the local highway. You can find more information on our construction information page.
Building a new connection from Sandford substation to the existing overhead line that goes to Weston-super-Mare. It will be made up of 700m of underground cable and nine new lattice pylons. This is to ensure local electricity supplies are maintained.
Removing 1.5 km of the existing overhead line to Weston-super-Mare that runs north-west from Sandford towards Puxton.
Early 2021 to mid 2024
Build a new 400,000 volt overhead line
What we are doing:
Building temporary entrances, crossing points 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 a new overhead line from Sandford substation to Seabank substation (approximately 31.2 km).
- We will use T-pylons in this area.
Early 2021 to mid 2024
Remove the existing 132,000 volt overhead line
What we are doing:
Removing existing overhead line from the A368 in Sandford to Avonmouth.