Another idea, very similar to the Oyster is the WaveRoller.
Technology:
- Wave damper
- Simple mechanical hinged flap connected to the seabed at low depth
- Each passing wave moves the flap, driving hydraulic pistons to deliver high pressure oil which moves a generator.
- Instead of the floatation of the flap to recover the vertical position, the Wave Roller uses the back movement of the water
Advantages:
- Simple and robust mechanical offshore component with innovative use of proven conventional onshore hydro-electric components
- Minimal environmental footprint and is effectively silent in operation
Disadvantages:
- How much of the available energy is it able to capture?
- Joints between sections in contact with sea water
Cost:
- Unknown. AW-Energy, a Finnish cleantech company developing WaveRoller, has signed a $4.4M (3 million euros) contract with the European Union to demonstrate its technology.
Other info:
- October 2, 2009 The goal of the project is to manufacture and deploy the first grid-connected WaveRoller unit in the Portuguese waters. The exact installation site is located near the town of Peniche, which is famous of its wave resources and also known as "Capital of the waves." The nominal capacity of the WaveRoller unit is 300 kW and the project includes a one-year testing period.
Links:
Official Website:
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