Frequensea and Deltares have been awarded a grant under the
EKOO – TSE: Electricity 2025 programme by the Netherlands Enterprise Agency (RVO). The subsidy will be used to further develop the novel patented Frequensea concept into a working subsea cable decommissioning tool by designing, testing, and validating it in practice.
Frequensea is a pioneer in subsea infrastructure removal, developing an innovative vibration-assisted method for the safe and efficient decommissioning of cables and pipelines. Deltares complements this with advanced research facilities and expertise in evaluating the environmental effects of subsea operations, ensuring the concept is both technically effective and ecologically sound.
The Frequensea concept uses controlled vibrations to reduce soil resistance. This approach makes it possible to remove buried infrastructure with smaller vessels, lower energy demand, and less disturbance to the seabed, while preserving materials for potential reuse.
The joint proposal submitted by Frequensea and Deltares ranked first among 12 submissions in the EKOO call, thanks to its innovation, sustainability benefits, and market potential.
“This subsidy is a major milestone for us” said Frequensea Managing Director, Dieter Korndorffer. “It enables us to prove our concept and bring the offshore industry closer to environmentally friendly and cost-efficient decommissioning.”
Mario Martinell, Expert advisor at Deltares added: “At Deltares, we see sustainable decommissioning as key part of the energy transition. Through research and innovation, we aim to provide the knowledge needed to support effective removal of offshore infrastructure.”
Over the next two years, the project will deliver a validated concept, positioning Frequensea and Deltares for further development toward full-scale deployment and contributing to a cleaner offshore energy landscape.
