The offshore array

The windfarm is being developed by Innogy Renewables UK Ltd (innogy), located 20 miles off the coast of Lincolnshire and 28 miles from the coast of north Norfolk.

The Secretary of State granted a Development Consent Order (DCO) for the offshore array on 11 July 2013.

The offshore array encompasses the wind farm site itself, and includes:

  • up to 288 wind turbines and their foundations
  • up to five meteorological masts for wind data collection
  • up to eight offshore substations, four of which would only be required if the project was constructed using direct current (DC) technology (DC technology has subsequently been ruled out in favour of alternating current (AC) technology following work undertaken on the Electrical System)
  • ‘inter-array’ cables linking the wind turbines and the offshore substations
  • a mobile facility for operations and maintenance staff and equipment such as a vessel or jack up barge

Night time turbine foundation installation works offshore.

The electrical system

The electrical system connects the offshore array and onshore elements of the project.
The electrical system connects the offshore array and onshore elements of the project.

The electrical system connects the offshore array to the onshore grid connection point at the existing National Grid substation at Bicker Fen.

The power generated by the offshore wind turbines will be collected by the offshore substation platforms and transformed to a suitable voltage for export, before being exported by sub-sea and underground cabling.

The Electrical System covers the offshore export cable, the underground landfall infrastructure to the north of Anderby Creek and a new substation at Bicker Fen, ensuring the connection of the offshore turbines to the national grid onshore and ultimately into UK homes.

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