IN Brief:
- LionLink has been included in the Dutch Offshore Wind Energy Development Framework, enabling further investment by the Dutch transmission operator.
- The scheme will connect the Nederwiek 3 offshore wind grid connection to both Dutch and UK onshore high-voltage networks.
- The project shows North Sea infrastructure moving from single-purpose export cables toward hybrid offshore grid architecture.
TenneT has gained a further route to invest in LionLink after the hybrid interconnector was included in the Dutch Offshore Wind Energy Development Framework.
Being developed as a DC hybrid interconnector between the Netherlands and the UK, LionLink will connect the Dutch offshore grid connection for Nederwiek 3 with onshore high-voltage systems in both countries. The link is designed to bring offshore wind power ashore while also enabling electricity exchange between the two markets.
National Grid Ventures is developing the UK side of the connection, from the UK border in the North Sea to the onshore station in Great Britain, while TenneT is developing the Dutch side. The project is targeted around the early 2030s and sits within a broader North Sea shift in which offshore wind connection and interconnection are increasingly being combined in the same infrastructure.
Traditional interconnectors operate as point-to-point links between two countries, with converter stations on either side of a direct-current submarine cable. Offshore wind export systems have historically brought generation from a wind farm or offshore zone to a single landing point. LionLink changes that model by connecting an offshore wind grid connection to two national systems, allowing the same infrastructure to carry offshore generation and support cross-border trading.
That approach addresses several practical pressures in the North Sea. Offshore wind zones, subsea cable corridors, interconnectors, converter platforms, and landing points are all competing for seabed space, consenting capacity, specialist equipment, and grid connection points. A hybrid link can be used more intensively than a single-purpose asset, with capacity available for renewable export when wind output is high and market exchange when offshore generation is lower.
The operating model is more demanding than a simple radial export route. Hybrid interconnectors require arrangements covering market coupling, capacity allocation, offshore bidding zones, congestion management, balancing, and regulatory treatment across borders. The physical architecture may be based on DC technology, but the asset can only operate effectively if technical design and market rules are aligned early.
Britain’s power system is already more exposed to cross-border flows, with interconnectors affecting margins, balancing actions, renewable curtailment, and price formation. The same tension can be seen in Ofgem’s warning over conduct in interconnector capacity auctions, which underlined the importance of market behaviour around assets that increasingly shape system outcomes.
For transmission planning, LionLink points toward a more integrated offshore network. Britain, the Netherlands, Belgium, Germany, Denmark, and Norway face a shared challenge: large renewable generation volumes are being developed offshore, while demand remains concentrated onshore and often far from landing points. Separate radial links for each project risk higher costs, duplicated cable corridors, lower utilisation, and more complicated consenting.
Hybrid links offer a route to better coordinated infrastructure, although they also require earlier alignment between transmission operators, regulators, governments, and developers. Converter platforms, offshore substations, subsea cables, onshore landing points, and associated reinforcements must be planned as part of one operating system, not as isolated project assets.
The UK side of LionLink will still need to fit within domestic network reinforcement plans. Interconnectors do not remove the need for onshore grid capacity; they add another controllable source of flow into parts of the system that may already be constrained. Converter stations, landfall works, underground cables, substations, and associated reinforcements remain part of the delivery chain.
Recent UK transmission work, including dynamic line rating, substation upgrades, and overhead line refurbishment, sits alongside this move toward new offshore infrastructure. The system is being strengthened through a combination of new routes and better use of existing assets. LionLink belongs in the former category, but its value will depend on how effectively it is integrated with the latter.
The Dutch framework decision does not settle every technical, regulatory, or planning question, but it gives the project a stronger basis for continued development. As North Sea generation increases, offshore infrastructure is moving beyond the one-way export model. LionLink is part of a more meshed, controllable, cross-border grid architecture that will define the next stage of offshore electrification.
