The world"s ocean may eventually provide us with energy, to power our homes and businesses. At the moment, most ocean energy power plants are experimental at the time being.
There are three ways to use the ocean for its energy. We can use the ocean"s waves, high and low tides, or temperature differences in the water.
When the tides comes into the shore, they can be trapped in reservoirs behind dams. Then when the tide drops, the water behind the dam will be let out just like in a regular hydroelectric power plant.
In order for this to work, you would need large increases in tides. An increase of at least 16 feet between low tide to high tide is needed. There are only a few places where this tide change occurs around the earth. Some power plants are already operating using this idea. One plant in France makes enough energy from tides to power 240,000 homes.