SciTransfer
SHY · Project

High-Efficiency Seawater Hydraulic Systems for Lowering Wave Energy Production Costs

energyTestedTRL 6

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.

By the numbers
10
Total partners
7
Industrial partners
2
Generations of prototypes fabricated
The business problem

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.

The solution

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.

Audience

Who needs this

Wave energy converter manufacturersOffshore renewable energy developersMarine hydraulic component suppliersOcean energy research centers
Business applications

Who can put this to work

Renewable Energy
mid-size
Target: Wave Energy Converter (WEC) Manufacturer

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).

Marine Engineering
enterprise
Target: Offshore Infrastructure Provider

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.

Hydraulic Component Manufacturing
SME
Target: Industrial Valve Producer

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.

Frequently asked

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.

Consortium

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.

How to reach the team

Contact WAVEPISTON AS in Denmark for technical specifications on the seawater hydraulic PTO.

Next steps

Talk to the team behind this work.

Contact us to explore licensing opportunities for the dynamic passive controller.