A new electricity cable tunnel south of the Thames National Grid is looking to renew and improve electricity infrastructure to ensure a continued safe and secure supply to London. Its London Power Tunnels (LPT2) project is a key part of this. Work is scheduled to start in March 2020 and the EUR1.75bn (GBP1bn), eight-year programme will see the construction of a 32.5km tunnel which will house 200km of electricity transmission high voltage cables. The tunnels will stretch from Wimbledon in the South-West to Crayford in the South-East crossing no fewer than 15 train lines and two rivers.

In December, in a major milestone for the project, National Grid has awarded a six-year GBP400 million contract to deliver the tunnelling and shaft work for LPT2. Please click uk/80 for tunnelbuilder archive.

The new cables will replace three existing circuits that currently run beneath London’s roads. The project has been developed in way that will minimise disruption for Londoners, eliminating the need to dig up the existing cables which are now more than 50-years-old and reaching the end of their life.

The total length of the three tunnels will be approximately 32.5km. The depth of the tunnels range between 10m and 63m. Most of the tunnels will be approximately 30m deep.  Visit https://www.nationalgridet.com/news/london-power-tunnels-2. 04/20.