Why a tunnel?

Most of the electricity supply in London is transmitted through underground cables, traditionally found just below the road surface. Work to maintain them is carried out at street level and can be disruptive.

By housing new electricity cables in deep underground tunnels, there will be a number of benefits:

  • Less disruption during construction
  • Less disruption for maintenance and repairs
  • Future repairs and maintenance work can be carried out without disrupting traffic, residents and businesses
  • Additional cables can be installed in tunnels to meet future demand
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