NextGeo secures a €9 million Tennet survey contract in the Dutch offshore wind sector.

Italy-based offshore survey company Next Geosolutions (NextGeo) has secured a contract worth around EUR 9 million from Dutch transmission system operator TenneT for marine survey activities related to the Nederwiek 3 offshore wind grid connection in the North Sea.

The contract encompasses geophysical and geotechnical surveys along the designated Voordelta–Nederwiek 3 export cable corridor.

The export cable route, along with the converter station at Standhazensedijk in Geertruidenberg, has been chosen as the preferred alternative for the Nederwiek 3 grid connection, selected at the start of 2025. The underground cable will follow an inland waterway path through the Voordelta, Haringvliet, Hollands Diep, and Amer, as outlined on TenneT’s website.

The Nederwiek 3 area will feature both new offshore wind capacity and LionLink, which serves as an interconnector between the Netherlands and the UK.

NextGeo's responsibilities for the project include seabed mapping, deep geotechnical sampling and analysis down to 40 metres, and the identification of unexploded ordnance (UXO) and other seabed obstacles along the route.

These surveys aim to assist in assessing the technical feasibility, design, and engineering of the export cable infrastructure linking the offshore wind site to onshore facilities, while minimizing installation risks, according to the company.

Surveys will take place in nearshore and tidal regions within the Voordelta–Nederwiek 3 area, with an expected completion date in the third quarter of 2026.

Construction of the Nederwiek 3 offshore grid connection is anticipated to begin in 2027 and be finished by 2031.