The initiative National Grid and TenneT Germany have started is indeed a very ambitious one. Their joint goal is to build the GriffinLink project, a multi-purpose offshore interconnector that would connect British and German offshore wind generation to both countries’ electricity networks. This groundbreaking venture stands to be the first of its kind in Europe, harnessing wind power to enhance energy security and market integration across north-western Europe.
GriffinLink won’t be operational until the late 2030s at best. Its overarching aim is to make the best possible use of all offshore wind resources across the Northern Seas. This undertaking directly addresses pressures from increasing energy consumption. These demands are largely fueled by electrification, decarbonization and the rapid expansion of data centers and artificial intelligence applications. Through interconnecting offshore wind generation from both countries, GriffinLink will provide a secure, affordable, and clean delivery of energy.
Ben Wilson, a National Grid representative, could hardly contain his excitement for the project.
“We are proud to work with TenneT Germany on this groundbreaking project that will enhance the diversity and flexibility in our energy systems.” – Ben Wilson
GriffinLink is not just a powerful new method of connecting power sources. It would be a huge step in the right direction for energy security and stability, regionally and across borders. The project underscores a commitment to creating an integrated and flexible energy network that benefits both Great Britain and Germany.
In July 2025, the utility National Grid selected Sumitomo Electric industries as its preferred bidder. This Japan-headquartered subsea cablemaker will provide and install the hulking dueling subsea cables for the 2GW Sea Link high-voltage direct current electricity transmission project. This cooperation truly represents the international cooperation that is providing tangible results in enhancing energy connectivity across Europe.
As Wilson said, there’s no understating the significance of these types of projects.
“MPIs like GriffinLink are important for maximising the efficient use of resources, reducing costs and minimising the impact on coastal communities. Projects like this are vital to delivering a more coordinated, offshore grid. We now need to see the frameworks to make this happen developed and deployed at pace.” – Ben Wilson
The development phase for GriffinLink will involve extensive onshore and offshore studies over the coming years, contributing to broader European grid integration efforts. National Grid and TenneT Germany have decades of interconnector building, developing, and operation experience across Europe. This experience makes them uniquely qualified to execute on this collaborative and creative project.