Wave Energy Scotland (WES) has selected three technologies to go forward to the third stage of its power take-off (PTO) development programme. 

Three consortia led by Artemis Intelligent Power, the University of Edinburgh and Italy’s Umbra Cuscinetti have each been awarded just under £2.5m for two-year projects.

Artemis Intelligent Power is developing the Quantor hybrid hydraulic PTO; the University of Edinburgh the C-GEN Direct Drive lineal PTO; and Umbra Cuscinetti the EMERGE reciprocating ball screw generator.

A PTO is the name given to the method used to convert wave motion into electrical energy, which can then be collected and used either in the grid, locally or stored for future use.

WES director Tim Hurst said: “After an extensive evaluation process, these technologies were assessed to be the best in the programme and worthy of further development.

“This takes us one step further towards finding the best solution for the PTO component of a wave energy converter.”

Highlands and Islands Enterprise subsidiary WES will announce a fourth innovation funding call for control systems next month.

Image: FloWave test centre at the University of Edinburgh (FloWave)