SOON it won't be just trains passing through the Channel Tunnel, plans have been announced to run a high-power electricity cable through the service tunnel.
The interconnector project proposed by Eurotunnel and investment company STAR Capital, will see the installation in the service tunnel of twin 100mm diameter, High Voltage Direct Current (HVDC) cables.
On the UK side, the cables will be linked to the National Grid electrical substation at Sellindge, 14 km from the Tunnel exit at Folkestone.
In France the cables will be linked to the RTE Les Mandarins substation, 2.5 km from the Tunnel exit at Coquelles.
Eurotunnel say that the consumption of electricity is on the increase in both Britain and France and price differences exist between the two countries depending upon the time of day.
This project aims to smooth the increase in these energy imbalances, and be in place by 2015.