Our proposals - January 2022

Our statutory consultation closed on 21 March 2022. The below information sets out our proposals as they were during this consultation. It has been left online for reference purposes.

We are seeking your views on our proposals to reinforce the electricity transmission network between the existing Bramford Substation in Suffolk, and Twinstead Tee in Essex. The proposed reinforcement is around 29 km and includes building new pylons, some underground cables and a 'grid supply point' substation. We would also take down around 27.5 km of existing pylons. Our proposals include:

  • around 19 km of new 400 kV overhead lines

  • around 10 km of new 400 kV underground cables

  • four cable sealing end compounds to connect overhead line and underground cable sections together

  • removal of around 25 km of existing 132 kV pylons between Burstall Bridge and Twinstead Tee

  • removal of around 2.5 km of existing 400 kV pylons south of Twinstead Tee

  • a new grid supply point substation at Butler's Wood, to connect the local distribution network into the National Grid

Virtual exhibition

You can also learn about the proposals by visiting our virtual exhibition. To use the virtual exhibition:

  • Tap or click on the icons above each consultation banner to read the information.
  • Consultation banners will open in a new tab. You can also download an audio version of the consultation banners by clicking here or download an accessible PDF of all the consultation banners by clicking here

Interactive map

You can view an interactive map of our proposals below. You can also view Ordnance Survey plans of the entire route in the General Arrangement Plan, available in our document library.