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​​​​​​New electricity pylons appear in Somerset

Image: National Grid

The first 36 T-pylons, a new design for an electricity pylon in Great Britain have been erected in Somerset.  

116 T-pylons along a 57km route will connect low carbon energy to six million UK homes and businesses. The T-pylons have a single pole and T-shaped cross arms which hold the wires in a diamond ‘earring’ shape. They are 35 metres high, a third shorter than National Grid’s traditional lattice pylons, and have a smaller footprint using less land. 

The new pylons form part of National Grid’s Hinkley Connection project, a £900m investment to connect low carbon electricity from Hinkley Point C Nuclear power station. They will run between Bridgwater and Portbury, other than through the Mendip Hills AONB where the new connection goes underground. The project also includes the removal of 249 electricity pylons between Bridgwater and Avonmouth.  

The new design, submitted by Danish company Bystrup was selected from over 250 designs entered into an international competition run in 2011, organised by the Royal Institute of British Architects and government (the then Department of Energy and Climate Change). With a need for new energy infrastructure to enable progress towards net zero.  The competition sought a new design to reduce impact on the local environment and surroundings.

T pylons form part of a suite of technologies used by National Grid to mitigate the impact of electricity infrastructure, including alternative lattice pylon designs and different types of underground and subsea cable systems. The appropriate approach for each new development or upgrade is assessed on a case-by-case basis, with each technology used based where it is operationally possible and cost efficient for electricity consumers.

“This new design forms part of our significant investment in the network in England and Wales”

National Grid Electricity Transmission Acting President, Chris Bennett

Construction of the first 48 T-pylons by Balfour Beatty on behalf of National Grid began last year near East Huntspill, with each pylon taking roughly 5 days to build.

National Grid Electricity Transmission Acting President, Chris Bennett said: “We are always looking for innovative new ways to mitigate the impact of our infrastructure on the natural environment and projects such as T-pylons are a great example. 

“This new design forms part of our significant investment in the network in England and Wales, adding capacity onto the grid to deliver increasing amounts of low carbon energy and support the UK’s drive towards its net zero target.”

Chamber recently hosted Levelling Up the Conversation on the Environment in Taunton, Somerset.

Balfour Beatty’s Managing Director for its Rail and Utilities business, Matt Steele said: “Our unique capability and extensive experience in delivering major, complex overhead line schemes, makes us ideally positioned to play a key role in constructing the world’s first T-pylons.

“We look forward to working with National Grid to successfully and safely deliver low-carbon electricity to millions of people, supporting the UK’s net zero ambitions.”

As part of the project, 249 old-style pylons will be removed. Formally known as “transmission towers”, they became known as “pylons” from the Greek word “pyle” meaning “gateway”. Following the 1922 discovery of boy king Tutankhamun’s tomb and mummy, Egyptology was all the rage.

The Hinkley Connection project will be ready to connect to Hinkley Point C by the end of 2024, with the project complete at the end of 2025.

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