No attempts to harvest energy from waves have resulted in economically viable and competitive technology. Currently the cost per watt of usable wave energy is high, due to a focus on energy conversion methods and efficiency, rather than on mooring and grid connection, accounting for more than 90% expenditure.
Wavepiston is a breakthrough near-shore wave power technology producing energy from waves at a competitive price in comparison to the most efficient renewable energy technologies. The system consists of identical modules mounted on a string, pumping pressurized water to shore for energy generation. Using Wavepiston’s patented “force cancellation” principle, the system is able to reduce the amount of forces on the mooring and structure to 1:10, requiring a simpler structure and reducing capital costs. The Wavepiston system offshore application ensures it is also a suitable fit for remote islands and isolated coastal communities.
The Wavepiston system was conceived in 2006. In 2010 numerous tank tests were performed with a system 1:30 the size. In 2013 a proof of concept was carried out offshore with a system 1:9 the size and results were better than predicted.