The Pelamis Wave Energy Converter is designed to be moored at sea, 5-10 km from shore in 50-60m of water. It produces electricity from the motion of ocean waves. The drawing from Ocean Power Delivery shows their proposed wave farm. Each tube is 120m long, 3.5m in diameter, and can generate 750kW.
In the past five years there has been a resurgence of activity in wave energy, as the huge resource potential has been recognised. A number of developers in different countries have either installed or are about to install full-scale prototypes with funds in excess of 70 million euros have been committed to these installations.