Geo-data specialist Fugro has completed a series of land and marine site investigations for TenneT Germany to support the development of its LanWin1 and LanWin2 offshore grid connection projects, part of a wider programme aimed at integrating offshore wind energy into Europe’s electricity network.
The LanWin projects form part of TenneT’s 2-gigawatt (GW) programme, which seeks to establish at least 14 offshore grid connection systems. These systems are expected to deliver renewable power from offshore wind farms to the mainland grid, supplying clean electricity to up to 35 million European households.
Fugro carried out extensive onshore, nearshore and offshore investigations across the planned cable corridors. For LanWin2, land-based surveys employed the company’s GroundIQ service, which combines low-impact geophysical methods such as electrical resistivity profiling and a patented 3D ambient noise tomography technique to map subsurface conditions without intrusive equipment.
The geotechnical scope included borehole drilling and cone penetration tests at 15 locations, including four intertidal sites. To minimise disturbance in shallow areas, Fugro deployed its ARAN 250 jack-up platform configured for low-impact operations.
Offshore, four survey vessels were mobilised for various tasks: Fugro Frontier, Fugro Pioneer, and Scotia conducted geophysical, unexploded ordnance (UXO), and electromagnetic surveys, while Fugro Resolve was used for shallow geotechnical work using the company’s Blue Snake system, which integrates sampling and cone testing in a single deployment.
Data collected will be made available to TenneT through Fugro’s Virgeo platform, supporting detailed cable routing, design, and installation planning.
“Contributing to a project of this scale allows us to demonstrate how high-quality Geo-data can drive smarter, more sustainable infrastructure decisions,” said Jaco Stemmet, Fugro’s Regional Business Line Director for Land. “Our integrated site investigation approach, combining land and marine expertise with environmentally sensitive operations, will help support the successful delivery of LanWin1 and LanWin2 and contribute to Europe’s sustainable energy future.”
Fugro said the contract builds on its long-term collaboration with TenneT Germany and reflects its ongoing role in supporting offshore grid expansion across Europe.
