Paul Monaghan – 2016 Parliamentary Question to the Department for Energy and Climate Change

The below Parliamentary question was asked by Paul Monaghan on 2016-05-18.

To ask the Secretary of State for Energy and Climate Change, what the total length is of tunnels for each specific diameter being constructed by the London Power Tunnels Project; and what length of each such type of tunnel has been constructed to date.

Andrea Leadsom

National Grid has said that:

The total length of the tunnels is 32km and tunnelling was completed in March 2015.

19.6km of the network was constructed using a 3m internal diameter tunnel boring

machine

• Willesden to St John’s Wood 3m diameter tunnel – 7.4km

• Wimbledon to Kensal Green 3m diameter tunnel – 12.2km.

  12.4km of the network was built using a 4m internal diameter tunnel boring machine

  – St John’s Wood to Hackney 4m diameter tunnel.