Balfour Beatty Erect First New Pylons for National Grid in UK – Gallery and Video
For the first time in nearly 100 years a new design of pylons to carry overhead high voltage cables are being erected in Somerset in the UK by Balfour Beatty.
116 T-pylons along a 57km route will connect low carbon energy from Hinkley Point C Nuclear power station 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 35m high, a third shorter than National Grid’s traditional lattice pylons. As a result of its reduced size the T-pylon has a smaller land footprint and a reduced impact on the local environment.
While traditional pylons are typically erected in dozens of individual lifts, T-pylons are designed to be assembled in up to four sections, halving the usual construction time from around ten days to five. Secured in deep foundations and reinforced with a steel bolt cage, the four sections are lifted into place with a specialist crane and rig to secure them.
They will run between Bridgwater and Portbury, other than through the Mendip Hills, an Area of Outstanding Natural Beauty (AONB), where the new connection goes underground. The project also includes the removal of 249 electricity pylons between Bridgwater and Avonmouth.
Matt Steele, Balfour Beatty’s Managing Director for its Rail and Utilities business, 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.”
The erection of the first T Pylons for test purposes over 6 years ago
Source Balfour Beatty and National Grid