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Energy from the oceans is also available in the form of oceanic waves or sea-waves. Due to the blowing of wind on the surface of ocean, very fast sea-waves (or water waves) move on its surface. Due to their high speed, sea-waves have a lot of kinetic energy in them. The energy of moving sea-waves can be used to generate electricity. This can be done as follows:
- One idea is to set-up floating generators in the sea such that these would move up and down with the sea-waves. This movement would drive the generators to provide electricity.
- Another idea is to let the sea-waves move up and down inside large tubes. As the waves move up, the air in the tubes is compressed, and this compressed air can then be used to rotate a turbine of a generator to produce electricity.
These ideas are only experimental in nature and such models based on these ideas have been made but it will be many years before full-size wave-energy generators can be built to harness the sea-waves energy on a large scale.
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