Tidal energy turbines need to be much sturdier than wind turbines, because of the high density of water. One of the biggest drawbacks to tidal power is the high upfront costs. This limits where the power stations can be installed, making it difficult for tidal power to be implemented widely. For example, tidal power stations need to be built in places where the difference in height between high and low tide is significant enough to power turbines. There are additional requirements a potential site must meet. First, they need to be located on a coastline, which limits potential station sites to coastal states. In order for a tidal power plant to be built, the potential installation site must meet very specific requirements. So, tidal turbines have the potential to produce large amounts of electricity even if the conditions of the water aren’t ideal. Plus, even when water is moving at low speeds, the density of water allows it to power a turbine. This means that a tidal turbine will produce substantially more energy than a wind turbine of the same size. One of the main reasons for this is because water is so dense - almost 800 times more dense than air. Tidal power plants are able to produce high amounts of electricity. It also makes it easy to know how much power will be produced by turbines, since the power of the tides and currents can be forecasted accurately. Low and high tides follow well-known cycles, making it easier to know when power will be produced throughout the day. In addition to being a renewable energy source, tidal power stations do not emit greenhouse gasses during electricity generation.īecause greenhouse gas emissions are one of the leading causes of climate change, finding zero-emission energy sources is more important than ever. The gravitational pull from the sun and the moon, which controls the tides, won’t cease to exist anytime soon. So, as you are harnessing energy from the changing tides, you don’t decrease the amount of energy the tides can produce in the future. Tidal energy is a renewable source of energy, which means the energy doesn’t deplete as it is used. The turbine turns a generator that then produces electricity.Ĭheck out our article on how tidal power works for a more in-depth explanation. As the currents and tides change, the moving water pushes the blades of the turbine. Tidal turbines harness tidal energy similarly to how wind turbines capture wind energy. Tidal power can be captured by using different types of technologies, such as tidal barrages, tidal stream generators, and tidal fences.Īll of these types of tidal energy plants make use of tidal turbines, so it's most important to understand how a turbine can capture the kinetic energy within the tides for energy production. Tidal power is a renewable energy source that turns energy created from changing tides and currents in the ocean ocean into usable electricity.
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