Overview

• The project spans 180km with about 159km of overhead lines on roughly 509 pylons and 21km of underground cables, including sections through Dedham Vale National Landscape.
• The route would run from Norwich Main substation via Bramford near Ipswich to a new Tilbury North site and into the existing Tilbury substation in Essex.
• If the application is accepted, full documents will be published and a six‑month examination could begin in 2026.
• National Grid says the scheme would expand grid capacity and connect renewable and low‑carbon power to homes and businesses.
• Local officials and campaigners say offshore links or HVDC undergrounding were not fully considered, with one group preparing to argue the process was unlawful and MP Priti Patel urging residents to oppose the pylons.