The first use of ocean power was the tidal mill around the 11th century.
The Lens tidal power station built in France in 1966, with an installed capacity of 240,000 kilowatts, is the first successful commercial tidal power station in the world.
Ocean energy mainly includes tidal energy, wave energy, temperature difference energy, tidal energy, ocean current energy, temperature difference energy salinity, etc. They all come from the gravitational pull of the sun, moon and other planets or from solar radiation. The particularity of ocean energy is that it has large reserves and can be regenerated.