London Power Tunnels

Department for Energy and Climate Change written question – answered on 26th May 2016.

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Photo of Paul Monaghan Paul Monaghan Scottish National Party, Caithness, Sutherland and Easter Ross

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.

Photo of Andrea Leadsom Andrea Leadsom The Minister of State, Department of Energy and Climate Change

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.

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