National Grid UK has begun the second phase of a multi-million pound project to build a new tunnel for high-voltage underground electricity cables between its substations at Rowdown and Beddington. Tunnelling has now started north toward Beddington after the first phase, from Kent Gate Way to Rowdown, was completed at the end of 2007.

The tunnel is being built by National Grid and its principal contractor Morgan Est to reinforce the electricity transmission network in the Southeast. The tunnel will be 10 km in length and will house a new 400,000 Volt (400kV) cable when work is completed in 2011.

Jim Street, senior project manager for National Grid, said: “We are very pleased with the progress that we have made since our construction works began in 2006. This approach to replacing electricity cables avoids causing major disruption to the road network and helps us meet increasing energy demand in the southeast.”