Since tides are predictable and reliable, with tide times varying according to location, tidal energy can offer a near continuous power supply. There are two main types of tidal energy:- tidal stream and tidal range.
Tidal stream energy makes use of the kinetic energy of moving water to power turbines. Tides never stop, with water moving first one way, then the other, the world over. Tidal stream technologies capture the kinetic energy of the currents flowing in and out of the tidal areas.
Tidal range energy makes use of the potential energy in the difference in height (or head) between high and low tides. Artificial tidal barrages or lagoons may be constructed to capture the tidal range.
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