How Tidal Energy Works

Tidal energy is derived from the gravitational forces exerted by the moon and the sun, combined with the Earth's rotation, which cause the sea levels to rise and fall—known as tides. These tides are predictable and occur in cycles, making tidal energy a reliable source of power. The energy can be harnessed using several methods:

1. Tidal Turbines:

These are similar to underwater wind turbines. They are placed on the sea floor where strong tidal currents exist. As water flows over the turbine blades, they rotate, driving a generator to produce electricity.</li>

2. Tidal Barrages:

These structures resemble dams and are built across tidal estuaries. As the tide rises, water is trapped in a basin. When the tide falls, the trapped water is released through turbines, generating electricity.</li>

3. Tidal Lagoons:

These are similar to barrages but can be constructed along natural coastlines. They use the enclosed water to drive turbines as the tide moves in and out.
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Advantages of Tidal Energy

Renewable and Predictable:

Tidal energy is a renewable source that is highly predictable, unlike solar and wind energy, which are subject to weather conditions.

‍High Energy Density:

Water is much denser than air, allowing tidal turbines to generate more energy than wind turbines of the same size.

‍Environmentally Friendly:

Tidal energy does not produce greenhouse gas emissions during operation, making it a clean energy source.