Hinkley Point

Current construction activity

Date from

Date to


February 2021


Building pylons near Stogursey

June 2019


Shurton substation

Overview – Summer 2022

National Grid is continuing works to upgrade the connection to Hinkley Point C following the successful energisation of Shurton substation in June 2022.

The substation is now transferring energy from Taunton substation to Shurton. Later this year it will also back feed electricity to support the construction of the new power station.

The next phase of the project will begin in autumn 2022, and is to connect T-pylons near Bridgwater to Hinkley Point C, upgrading the existing 275,000 volt pylons near Stogursey and Shurton to 400,000 volt, so they’re ready to transport low carbon energy to the whole Hinkley Connection route.

Thank you from everyone working on the project for your patience as we continue our work to deliver electricity safely, efficiently, and reliably, and support the UK’s ambition to achieve net zero by 2050.

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Take a look at our detailed map

Hinkley Point timeline

Mid 2019 to mid 2023


Build Shurton substation

What we're doing:

  • Building a new substation within the boundary of the new Hinkley Point C power station complex, so we can connect the new power station to the electricity transmission network.

  • This was included in EDF Energy's Development Consent Order, which was approved by the Secretary of State in March 2013.

Early 2021 to late 2025


Modify existing overhead lines in the Hinkley Point area

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.

  • Modifying existing overhead lines in the Hinkley Point area, so they connect to the new Shurton substation at Hinkley Point C power station.

  • Building a short connection from Shurton substation to the existing substation at Hinkley Point B.

Mid 2022 to mid 2024


Upgrade Hinkley to Bridgwater overhead line

What we're doing:

  • Changing the wires on the existing pylons to upgrade the operating voltage of the line from 275,000 volts to 400,000 volts.