Introduction Ocean waves are caused by the wind as it blows across the sea.
Waves are a powerful source of energy.
The problem is that it's not easy to harness this energy and convert it into electricity in large amounts. Thus, wave power stations are rare. How it works There are several methods of getting energy from waves, but one of the most effective works like a swimming pool wave machine in reverse. At a swimming pool, air is blown in and out of a chamber beside the pool, which makes the water outside bob up and down, causing waves. At a wave power station, the waves arriving cause the water in the chamber to rise and fall, which means that air is forced in and out of the hole in the top of the chamber.