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Interconnectors Β· Great Britain / Belgium

Nautilus Interconnector

In planning

National Grid is refining plans for a new British–Belgian subsea electricity connection. The earlier Suffolk connection agreement was removed; that should not be reported as the cancellation of all Nautilus development. Current route and converter options require further confirmation.

Sources reviewed 2026-10-08 Β· National Grid Ventures

Project facts

StatusIn planning
Developer / operatorNational Grid Ventures
RegionGreat Britain / Belgium
CountryUnited Kingdom
Published rating1,400 MW
Rating definitionTransfer capacity
Connection / routeGreat Britain ↔ Belgium
Delivery targetNot verified in this profile

What this link contributes

This asset provides a route for electricity to move between networks or strengthens the network carrying that electricity. Its capacity cannot be added to wind, solar or power-station capacity as though it were another generator.

Great Britain ↔ Belgium

Converter stations, cable manufacture, offshore installation, landfall works and grid energisation can progress at different times. The status above describes the documented project stage rather than assuming all work packages are complete.

Project location

The route and converter options are still being developed. No verified fixed converter coordinate is available in this dataset; the map shows regional context only.

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The map shows geographical context only. No unverified site pin is displayed.

    Markers identify sites, published points or labelled connection areas. Markers are not site boundaries or entrances. EGL2’s additional outlines and route layers are explicitly identified in the developer’s map data.

    Sources and review date

    1. National Grid Ventures project information
      Reviewed 2026-10-08

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    GRID CONTEXT

    Great Britain electricity now

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    National figures from the Carbon Intensity API. These do not measure an individual project’s output, cable flow or data-centre electricity use.