Types

• Oscillating water column: uses a large volume of moving water as a piston in a cylinder. Air is forced out of the column as the water rises and fresh air comes in when the water falls. These movements of the air turn a weir turbine at the top of the column. This is used for industrial sized wave stations.
• Buoyant moored device: A device that floats on the water and is anchored to the sea floor. The tension between the waves and the mooring creates the power.
• Hinged Contour Device: is loosely moored to the sea bed. In general, as the waves move up and down, parts of the device move in motion. The tension between the different parts creates the power.