Deep Contracted by TenneT Netherlands for Offshore Cable Integrity Surveys (2026-2029)
TenneT Netherlands has awarded Deep a contract to perform annual offshore cable integrity surveys from 2026 to 2029, which will focus on subsea transmission infrastructure in the Dutch maritime region.
Utilization of Hydrographic and Geophysical Techniques
The surveys will employ advanced hydrographic and geophysical methods to assess the seabed cover over existing cables and identify any objects or seabed features that may pose a risk to cable integrity or protection. Findings that necessitate further evaluation will undergo visual inspection for detailed assessment.
Enhanced Monitoring for TenneT’s Offshore Infrastructure
The survey program aims to deliver updated insights regarding the conditions along TenneT’s offshore cable routes. This data will inform the transmission system operator’s monitoring and maintenance protocols, facilitate early detection of potential issues, and ensure compliance with existing permit obligations.
Maarten Abbenhuis, COO of TenneT, stated, “As we integrate more offshore wind farms into the high-voltage grid and expand interconnection cables between countries, the role of offshore transmission becomes crucial in our energy infrastructure. Routine monitoring is vital. Periodic surveys enable TenneT to evaluate conditions along its cable routes, track changes, and identify potential risks that could lead to outages. The monitoring services provided by Deep will be integral to maintaining the high reliability standards of our offshore grid infrastructure.”
This multi-year engagement is part of Deep’s initiatives in offshore hydrography and geophysics for the inspection and management of marine infrastructure within the renewable energy sector. Previously, Deep, in collaboration with Next Geosolutions, successfully conducted an extensive geophysical survey for unexploded ordnance (UXO) for TenneT near the coast, aiding the development of five offshore grid connection systems with a combined capacity of 2GW.
Source (including images): Deep BV
