Dartford Cable Tunnel

Dartford Cable Tunnel
Dartford Cable Tunnel
Location
Country	UK
Coordinates	51°28′5″N 0°14′58″E / 51.46806°N 0.24944°E
Ownership information
Owner	National Grid plc
Construction information
Commissioned	2004
Technical information
Type	Underground tunnel
Type of current	AC
AC voltage	400 kV

The Dartford Cable Tunnel is a 2.4 km utility tunnel beneath the Thames, upstream of the Dartford Crossing. With a diameter of ~3 m (10 ft), it carries a 400 kV National Grid electrical transmission cable. It is accessible by foot as a crossing of the Thames, but by authorised personnel only.^[1]^[2]^[3] It was built in 2003–04 at a cost of £11 million (equivalent to £22 million in 2023).^[4] The tunnel plays a crucial role in maintaining electrical supply infrastructure beneath the Thames, ensuring reliable power transmission.^{[citation needed]}

References

^ "National Grid builds new Thames tunnel at Dartford". Nce.co.uk. 1 May 2003. Retrieved 15 July 2015.
^ "ABB completes Dartford Cable Tunnel HV cable installation". Voltimum.co.uk. 3 April 2006. Retrieved 15 July 2015.
^ [1] Archived 29 October 2004 at the Wayback Machine
^ Nicolas Janberg (23 July 2014). "Dartford Cable Tunnel (Dartford, 2005) | Structurae". En.structurae.de. Retrieved 15 July 2015.

51°27′58″N 0°15′25″E / 51.466°N 0.257°E / 51.466; 0.257

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[1] "National Grid builds new Thames tunnel at Dartford". Nce.co.uk. 1 May 2003. Retrieved 15 July 2015.

[2] "ABB completes Dartford Cable Tunnel HV cable installation". Voltimum.co.uk. 3 April 2006. Retrieved 15 July 2015.

[tunnelsonline1-3] [1] Archived 29 October 2004 at the Wayback Machine

[4] Nicolas Janberg (23 July 2014). "Dartford Cable Tunnel (Dartford, 2005) | Structurae". En.structurae.de. Retrieved 15 July 2015.

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Dartford Cable Tunnel

See also

References