Wave and tidal energy are renewable energy sources that harness the power of the ocean's waves and tides to generate electricity. Wave energy is generated by the movement of waves, while tidal energy is generated by the rise and fall of the tides. Both of these sources of energy are clean, renewable,
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Wave power is the capture of energy of wind waves to do useful work – for example, electricity generation, desalination, or pumping water. A machine that exploits wave power is a wave energy converter (WEC).