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Home > Planning > National infrastructure and energy projects > Nautilus Multi-Purpose Interconnector

Nautilus Multi-Purpose Interconnector

The Nautilus Multi-Purpose Interconnector is being developed by National Grid Ventures. Interconnectors are high voltage cables which connect the electricity systems of neighbouring countries. Multi-Purpose Interconnectors could enable interconnection and offshore wind to work together as one combined asset.

The Nautilus project proposes to connect up to 1.4 gigawatts of offshore wind to the UK and Belgium through subsea electricity cables. The cables would travel between the two countries whilst connecting to offshore wind farm/s at sea, powering up to 1.4 million UK homes. This would then connect to an onshore converter station at each end of the connection to transform high voltage direct current into high voltage alternating current so that the energy can be fed into the transmission network of each country.

Illustration of a Multi-Purpose Interconnector (click image to view full size)
Multi Purpose Interconnector

The Secretary of State has exercised powers under section 35 of the Planning Act 2008 to direct that the Nautilus project be treated as development for which development consent is required and the Nationally Significant Infrastructure Project regime is applicable. The developer will as a result be required to apply for development consent where the final decision whether to give permission will be made by the relevant Secretary of State through the granting of a Development Consent Order. 

  • Decision letter to National Grid regarding Nautilus Interconnector 
  • Direction by Secretary of State under section 35 of the Planning Act 2008 relating to the Nautilus Interconnector 

Consultations

Non-statutory consultation – September to October 2021

  • National Grid Ventures held a non-statutory consultation on the Nautilus project between 14 September and 26 October 2021.
  • Local information events were held by the developer between 28 September to 1 October 2021 at Leiston, Friston, Thorpeness and Saxmundham.
  • Community webinars were held by the developer on 7 and 12 October 2021.
  • East Suffolk Council held three meetings on 13 and 18 October 2021 with the town and parish councils which were identified within the consultation as potentially hosting infrastructure, to listen to their views on the project.
  • East Suffolk Council’s response to the initial consultation on the Nautilus project

East Suffolk Council and Suffolk County Council have also written to National Grid PLC to seek coordination of the Nautilus project with other potentially forthcoming projects.

  • More information about Nautilus from National Infrastructure Planning website
  • More information about Nautilus from the developer’s website

Ofgem consultation on changes to the Initial Project Assessment of the Nautilus Offshore Hybrid Asset – 15th July to 15th August 2024

  • East Suffolk Council’s response to Ofgem’s consultation

In this section

  • Sizewell C Nuclear Power Station
  • Offshore windfarms
  • Nautilus Multi-Purpose Interconnector
  • Sea Link
  • Joint Local Authority Group
  • Energy Projects Team
  • Strategic engagement
  • Norwich to Tilbury
  • LionLink (formerly EuroLink) Multi-Purpose Interconnector

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