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How is tidal energy harnessed?

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Tidal power remains one of the great engineering challenges yet to be fully exploited in the modern world and yet it was first mooted more than a century ago. The oceans hold enormous quantities of potential energy that can be developed with very low greenhouse gas emissions. read more

Tidal energy is a renewable source of energy. During the 20th century, engineers developed ways to use tidal movement to generate electricity in areas where there is a significant tidal range—the difference in area between high tide and low tide. All methods use special generators to convert tidal energy into electricity. read more

In 2006, the government reviewed its energy policy and, with the enactment of climate change legislation that committed the U.K. to an 80 percent reduction in carbon emissions by 2050, commissioned new studies on low carbon generation, including tidal power. read more

Rising and falling tides have been used as the principle for harnessing tidal energy. Tides are caused by the gravitational attraction of the moon and the sun acting upon the oceans. The relative motions of these bodies cause the surface of the oceans to be raised and lowered periodically, according to some interacting cycles. read more

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