Hinkley Point

Current construction activity

Date fromDate toActivity
February 2021OngoingNew pylons near Stogursey

Overview – Spring 2024

National Grid is continuing works to upgrade the connection to Hinkley Point C, EDF Energy's new power station, following the successful energisation of Shurton substation in June 2022. 

We are continuing work to upgrade the existing 275,000 volt pylons near Stogursey and Shurton to connect to the new 400,000 volt T-pylons between Bridgwater and Loxton. We are expected to finish works on this phase by the end of 2024. 

Thank you from everyone working on the project for your patience and understanding as we progress with this vital work to connect six million homes and businesses to new sources of homegrown, low carbon energy, and help the UK meet its net zero ambitions.

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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 2024


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.