IDOM’s wave energy harvesting technology is a point absorber based on the Oscillating Water Column (OWC) working principle called MARMOK. The basic device concept can be described as a spar element holding a cylindrical water column inside. During operation, due to waves excitation, a relative movement between inner water column and buoy is produced. It makes water column act like a piston that comprises and expands the air chamber which is confined in the upper side of the buoy, generating a reciprocating air flow which is then converted into electric power using a power take off system composed by an air turbine. The absorbed power is transmitted to shore through a subsea cable.
This technology has already demonstrated its viability offshore though a low power grid connected prototype. Within EuropeWave project, IDOM aims to incorporate all the experience and lessons learnt during previous testing campaigns to develop a revised and innovative design focused on improving the power performance of the system while maintaining its high robustness, maintainability and reliability.