Turbines

Our floating turbines are designed to generate electricity from tidal streams, ocean waves or both energy sources together, while also helping clean the ocean by collecting floating marine debris.

Energy conversion

Three modes of operation

Our turbines have three different modes of operation: combined wave and tidal energy conversion, wave-energy conversion, and tidal-energy conversion.

This enables the potential energy of waves and the kinetic energy of tidal streams to be converted into electricity, either independently or together.

Diagram showing combined tidal-flow and wave-energy operation
Combined tidal-stream and wave-energy operation.

Tidal-stream mode

Tidal-energy conversion

In tidal mode, the kinetic energy of the tidal stream passes through the turbine and is converted into electricity.

The floating arrangement allows the turbine to remain aligned with the surrounding water column without requiring a conventional seabed-mounted support structure.

Diagram showing tidal flow through the turbine, indicated by white arrows
Tidal flow through the turbine is indicated by the white arrows.

Wave-energy mode

Wave-energy conversion

In wave mode, overtopping water is captured above the surrounding sea level, creating a hydrostatic head difference.

The stored water then passes through the turbine, allowing the potential energy of the overtopping waves to be converted into electricity.

Diagram showing wave overtopping creating a hydrostatic head difference
Wave overtopping creates a hydrostatic head difference.

Floating architecture

Designed for offshore installation and recovery

Our floating structures are semi-submersible, utilising a taut-mooring principle and anchor-cable shock absorbers to minimise wave-impact forces.

This approach also eliminates the need for voltage-limiting inductive couplings and expensive subsea maintenance and defouling interventions, while reducing reliance on costly subsea construction techniques.

Our technology is designed to have a low environmental impact: no piling is required to deploy the deadweight anchors or other components, only limited seabed trenching is required, and full recovery is planned during decommissioning.