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CorPower completes third stage of WEC tests in Orkney, Scotland

CorPower, along with its project partners has completed stage 3 combined dry and ocean testing of C3 Wave Energy Converter (WEC) at Scapa Flow site in Orkney, Scotland.

The results of the 18-month trials indicated a step-change improvement in survivability and competitiveness of wave energy.

During the trials, the company intended to address the two major challenges for wave energy, including storm survivability combined with significant power production.

CorPower Ocean CEO Patrik Möller said: “Based on the results, the projected performance of the next generation commercial scale C4 machine has been increased.

“With C4, the structural efficiency of wave energy is expected to improve by more than five times compared to the current state-of-the-art, bringing wave energy above 10 MWh/ton, which is comparable to leading wind turbines.

“Getting more energy with less equipment means lower CAPEX per MW. Smaller, lighter machines are easier to handle using low-cost vessels, giving less costly operations and maintenance.”

The tested WEC has two new features including a storm protection mode and phase control technology called WaveSpring.

CorPower noted that the storm protection mode makes the device transparent to incoming waves and was proven effective in minimising motion and loads in order to provide robust operation in storm conditions.

The WaveSpring technology delivered a projected increase of motion and power capture performance in operational sea states.

The project was financially backed by Wave Energy Scotland, InnoEnergy, Swedish Energy Agency and Interreg Foresea.

The European Marine Energy Centre (EMEC) has also issued a ‘Performance Statement’ verifying measured performance.

EMEC technical director Elaine Buck said: “We’re delighted with the success of the project, funded by Wave Energy Scotland.

CorPower’s WEC has been put through a rigorous 18-month test programme, beginning with onshore power take-off tests in Sweden using a bespoke hardware-in-the-loop test rig, and culminating with ocean testing at EMEC’s scale test site at Scapa Flow in Orkney.”