Beddington / London, United Kingdom

Optimisation of the energy supply in South London

The circular electricity grid in Croydon, south of London, was expanded from 275 kV to 400 kV. The so-called Beddington project was a substantial component in this expansion plan. A tunnel 10 km long and 3 metres in diameter to lay the cables in was bored between the Beddington and Rowdown stations. This tunnel solution prevented traffic disturbances during the construction work, avoided problems with the already existing underground infrastructure and allowed efficient installation. NKT received the contract for this turnkey cable project, ranging from development to manufacture of the cables and accessories. On-site installation including final testing and subsequent project acceptance by the customer was likewise an integral part of the contract.

A tunnel 10 km long and 3 metres in diameter was built between the Beddington and Rowdown substations in London

30 km installed

400 kV 2,500 mm2 copper XLPE cable
with an APL fire retardant outer sheath

February 2006 - July 2011

National Grid, England

Beddington, UK



Find a contact near you