If you are a WEC manufacturer dealing with high operational costs and low energy capture — this project developed a seawater-based hydraulic pump and controller valve that minimizes the levelized cost of energy (LCOE).
High-Efficiency Seawater Hydraulic Systems for Lowering Wave Energy Production Costs
Imagine a giant piston in the ocean that captures wave energy. Instead of using complex oils that can leak, this system uses the seawater itself to push and pull. It uses a smart valve that acts like a shock absorber, adjusting in real-time to grab the most energy possible from every wave without needing extra power to run.
What needed solving
Wave energy is often non-viable due to high levelized costs of energy (LCOE) and the inefficiency of traditional hydraulic power take-off systems in saltwater environments.
What was built
A composite linear pump and a controller valve using seawater as the working fluid, along with a condition controller for life-extension.
Who needs this
Who can put this to work
If you are an offshore provider dealing with equipment degradation in saltwater — this project developed a condition controller that identifies wear signatures to extend the remaining useful life of components.
If you are a valve producer dealing with the need for mass-producible, seawater-compatible parts — this project developed two generations of controller valves designed for mass production and full lifecycle impact.
Quick answers
How does this affect the cost of energy?
The project focuses on a control strategy specifically designed to minimize the levelized cost of energy (LCOE) rather than just maximizing power capture.
Is this technology ready for industrial scale?
The project includes the fabrication of two generations of pumps and valves specifically designed for mass production.
Who owns the IP or how is it licensed?
Based on available project data, specific licensing terms are not mentioned, but the project is coordinated by WAVEPISTON AS.
How is the system validated in real conditions?
The technology is calibrated at DTU and validated using the Wavepiston offshore test bench at PLOCAN.
What is the project timeline for development?
The project runs from 2024-04-01 to 2027-03-31.
Who built it
The consortium is heavily industry-driven, with 70% of the 10 partners being industrial entities, including 4 SMEs. This strong commercial lean, combined with partners from 7 different countries, suggests a high focus on market viability and manufacturing readiness rather than purely academic research.
Contact WAVEPISTON AS in Denmark for technical specifications on the seawater hydraulic PTO.
Talk to the team behind this work.
Contact us to explore licensing opportunities for the dynamic passive controller.