OffshoreWind EnergyInterconnectors RenewableEnergy NorthSeaEnergy EnergySecurity PowerInfrastructure NetZero

GriffinLink project signals shift toward integrated European offshore power grids

*UK and Germany Unveil GriffinLink to Jointly Harness Offshore Wind Power Source: Energy Voice (Image by BASF)*

The United Kingdom and Germany have announced plans to jointly develop GriffinLink, a proposed multi-purpose electricity interconnector designed to connect offshore wind generation directly into both national power systems. The project represents a significant step toward a more integrated and resilient North Sea energy network, supporting energy security while maximising the efficient use of renewable resources.

The initiative brings together National Grid and TenneT Germany, with GriffinLink conceived as a hybrid asset capable of simultaneously transmitting electricity between countries and connecting offshore wind farms. With a potential capacity of up to 2 gigawatts, the interconnector is intended to reduce grid congestion, lower infrastructure duplication, and limit environmental and coastal impacts compared with traditional point-to-point connections.

Conceptual layout of a multi-purpose interconnector linking offshore wind generation directly to two national electricity systems. Source: Offshore Energy (image by National Grid)

Unlike conventional interconnectors, GriffinLink is classified as a multi-purpose interconnector, meaning offshore wind power can be routed dynamically to the market where demand is highest. This approach supports system flexibility and enhances security of supply across north-western Europe, particularly as offshore wind capacity continues to expand rapidly.

The project was announced at the North Sea Summit in Hamburg, where regional governments reaffirmed commitments to large-scale offshore wind deployment and cross-border cooperation. Early development will focus on onshore and offshore studies, technical integration, and socio-economic assessments. A final investment decision will follow once feasibility and regulatory conditions are clarified.

If approved, GriffinLink is expected to become operational in the late 2030s. It would build on existing interconnector portfolios in both countries and support rising electricity demand driven by electrification, decarbonisation, data centres, and AI-related infrastructure.