Isle of Man to England Interconnector explained

Isle of Man to England Interconnector
Country:United Kingdom & Isle of Man
Coordinates:
Start:Bispham, Blackpool, England
Through:Irish Sea
Finish:Douglas Head, Isle of Man
Partners:National Grid plc
Cable Manufacturer:BICC, Erith
Pirelli Cables, Southampton
Construction:1999
Est:2000
Type:submarine cable
Current Type:AC
Length Km:104
Capacity:40MW
Ac Voltage:90kV

The Isle of Man to England Interconnector is a submarine power cable connecting the transmission system of the Manx Utilities Authority to that of Great Britain. With an undersea section of approximately 1040NaN0,[1] it is the second longest AC undersea cable in the world.[2]

Route

It was laid in 1999 between Bispham, Blackpool, England, and Douglas Head on the Isle of Man, commencing commercial operations in November 2000. It is capable of continuous operation of 40MW at 90kV (although other sources say 65MW at 132kV AC[3] [4])

Structure

The cable was manufactured in two parts: one section at the former BICC works in Erith and the other at Pirelli Cables in Southampton. It ended the Isle of Man's dependence on local diesel-powered generation.[2] Power supplies to the island were increased in 2003 by an 85MW combined cycle gas turbine power station at Pulrose, in the capital, Douglas.[5]

The electricity cable is bundled with a fibre-optic cable which is used for telecommunications. The cable is owned by e-llan Communications, which is part of Manx Utilities. The electricity cable is used for importing and exporting electricity between the Isle of Man and the GB National Grid.[4] [6]

The cable is mostly buried at around 2abbr=onNaNabbr=on depth but is on the seabed surface at six locations with protective cable mattresses.[3]

Capacity

On the 20th anniversary in 2020 of its commissioning a total of 1.5TWh of power has been exported to the UK grid which contributed £47million to the revenue of the Isle of Man.[7]

The amount of electricity sold to the UK since 201415 and the revenue gained each year was as follows:[8]

Year201415201516201617201718201819201920202021
Electricity to the UK, GWh938710595131192168
Revenue from sales to UK£1.8M£3.2M£4.6M£3.2M£3.4M£4.3M£3.8M

See also

References

54°N -53°W

Notes and References

  1. B. . Howarth . Coates, M. . Renforth, L.. Fault location techniques for one of the World's longest AC interconnector cables. 8th IEE International Conference on AC and DC Power Transmission. 14–18. March 2006. 0-86341-613-6.
  2. Web site: The Longest AC Subsea Cable in the World. Major Assets. Manx Electricity Authority. 2008-10-22.
  3. Web site: Isle of Man Interconnector Cable. n.d.. 14 June 2021. AWJ Marine.
  4. Web site: Subsea cable. n.d.. 14 June 2021. Manx Utilities.
  5. Pickin. M. 2004. Power to Pulrose. Power Engineer. 18. IEEE. 1. 14–16. 1479-8344.
  6. Web site: ISLE OF MAN PLANT HAS NOVEL DESIGNS. Turbomachinery International. Eric Jeffs. May–June 2004. https://web.archive.org/web/20041224050220/http://www.gasnet.com.br/artigos/artigos_view2.asp?cod=534. 2004-12-24.
  7. Web site: 20 years of subsea cables celebrated by partnering with Marine Nature Reserves . 5 November 2022.
  8. Web site: Annual Reports & Financial Statements . . 2 February 2022.