National Grid has received full planning approval for the Grain to Tilbury project from Thurrock Council in Essex and Gravesham Borough Council in Kent, a key milestone in strengthening the UK’s energy network. 

As part of The Great Grid Upgrade, the largest overhaul of the electricity grid in a generation, this essential infrastructure project will replace the existing Thames Cable Tunnel and help to upgrade the electricity network in the region. Originally installed in the 1960s, the current tunnel and cables have reached the end of their operational life. 

The project involves the construction of a new 2.3-km tunnel beneath the River Thames, the installation of new cabling, and new headhouses at each end for access. Cable sealing end compounds will also be installed to connect the new underground cable to the wider electricity network. Ferrovial in partnership with BEMO (Ferrovial BEMO JV) has now begun construction, which is expected to complete in 2029. 

Looking ahead, National Grid is planning further refurbishment of the overhead line between Tilbury, Kingsnorth, and the Isle of Grain. This phase of work is scheduled for 2028, and local communities will be consulted as plans progress. Click uk/53 for tunnelbuilder archive. Visit https://www.nationalgrid.com. 11/25.