Survey of Energy Resources 2007
Wave Country Notes
Sweden has played a significant role in wave energy, despite having a relatively poor wave energy resource. Activity has been mainly in academia, with Chalmers Tekniska Hogskola and Uppsala University making the most contributions. One company, AB Interproject Service AB, has developed the concept of combining the IPS buoy and the Hose-Pump converter, which is the system now being exploited by Finavera (Canada).
This device is a moored floating buoy affixed via a rope to a 10 kW electrical generator mounted on the sea bed. The key innovation of this technology is its use of a linear generator with a large number of NdFeB magnets, which allows for high magnetic excitation with smaller magnets (www.seabased.com).
Sea Power International
This company has developed a floating overtopping device for mooring in deep water (www.seapower.se/indexeng.html). A considerable time ago it won an opportunity to install a device in Shetland as part of the Scottish Renewables Order but little progress has since been made.