Viking Link Denmark-UK interconnector
North Sea, between Bicker Fen (Lincolnshire, UK) and Revsing (South Jutland, Denmark) · 2019–2023 (commercial operations began December 2023) · N/A (estimated €2 billion, specific GBP value not readily available)
The judgement call
Account-gated at launchThe project sets new standards in energy security and sustainability by enabling the sharing of clean energy between the UK and Denmark. - Its immense scale and technical complexity required significant innovation in cable manufacturing and installation techniques. - The successful completion demonstrates the critical role of interconnectors in facilitating renewable energy integration and market efficiency.
Key engineering challenges
Manufacturing and laying the world's longest land and subsea HVDC interconnector cable (765 km). - Navigating complex seabed conditions and environmental considerations across the North Sea. - Integrating the interconnector with both the UK and Danish electricity grids, ensuring seamless power exchange.
Project facts
- Client / owner
- National Grid Ventures (UK) and Energinet (Denmark)
- Lead contractor
- Prysmian Group (for cabling), Siemens Energy (for converter stations)
- Lead designers
- N/A
- Project type
- new build
- Scale
- 1.4 GW (1400 MW) capacity; 765 km HVDC cable (623 km subsea, 142 km land); world's longest land and subsea HVDC interconnector
- Disciplines
- electrical; civil; marine; geotechnical
- Standards & frameworks
- N/A
Sources: National Grid: https://www.nationalgrid.com/national-grid-ventures/viking-link - Prysmian Group: https://www.prysmian.com/en/insight/projects/viking-link-the-world-s-longest-interconnector - Power Magazine: https://www.powermag.com/viking-link-the-epic-build-of-the-worlds-longest-onshore-and-subsea-hvdc-interconnector/ - State of Green: https://stateofgreen.com/en/solutions/viking-link-exchanging-green-energy-flows-via-the-worlds-longest-power-cable/