National Grid announces plan for subsea cable to Germany

National Grid has announced that it will partner with TenneT Germany to develop GriffinLink, a new multi-purpose interconnector (MPI) to connect British and German offshore wind to both countries. The move marks a step towards a more integrated, flexible, and efficient energy system for both Great Britain and Germany which delivers secure, affordable energy for consumers.

Announced at the North Sea Summit in Hamburg, GriffinLink will make an important contribution to security of supply and market integration in north western Europe, National Grid claims. Cross-border hybrid energy systems such as GriffinLink make it possible to feed cleaner electricity into the grid where it can be generated and transport it exactly where it is needed.

As a ‘multi-purpose’ interconnector connecting wind in two countries, GriffinLink would be the first project of its kind in Europe and a milestone for cross-border energy security and stability.

Ben Wilson, President of National Grid Ventures, said: “We are proud to work with TenneT Germany on this groundbreaking project that will enhance the diversity and flexibility in our energy systems.

“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."

In response, Tim Meyerjürgens, CEO of TenneT Germany, added: “GriffinLink is the first project of its kind in Europe and will be a major milestone in cross-border energy security.

“As one of the largest offshore transmission system operators, we at TenneT Germany have been resolutely driving this development forward for years.

“Together with our partner National Grid, we are demonstrating how we can think beyond national borders and connect offshore wind farms in such a way that a meshed European energy system can be created. Instead of isolated individual projects, we will see more and more hybrid, cross-border connections in the future, and we need clear political framework conditions to achieve this.

“This is the key to a secure, efficient and independent energy future for Europe. We are ready to work together to realise the North Sea power plant.”

GriffinLink would build on National Grid’s existing 7.8GW interconnector portfolio and TenneT Germany’s 23GW interconnector portfolio. With vast experience in constructing, developing and operating interconnectors, National Grid and TenneT Germany are well placed to develop this innovative project.

It is anticipated to be operational by the late 2030s, maximising the use of offshore wind in the Northern Seas, and meeting the demand for energy being driven by the increase in electrification due to decarbonisation, data centres and AI.