Tidal Energy

Tidal Energy: What Is It?

When water is used to generate electricity, it’s called tidal energy or tidal power. Tidal energy uses tidal generators to turn the kinetic energy of the tides into usable electric power. During the oil crisis of the 1970s, the idea of using tidal power was initially mooted.

To put the United States further away from exploring alternative energy sources was a priority. And Europe is threatened by the turbulence in the energy markets. There are numerous ways to generate electricity. The most popular type is a tidal stream generator, a tidal energy converter (TEC). Cost-effectiveness and environmental sensitivity are two important considerations.

Tidal Energy

When using a tidal stream generator, you’re harnessing the kinetic energy of the water as it moves. Such as the wind that drives wind turbines. A tidal barrage is a less prevalent and more expensive alternative. It makes use of the stored potential energy in tidal water to drive turbines, just like water flowing over a dam does.

Tidal Stream Generators Can Be Classified Into The Following Categories:

There is currently no standard design for a tidal stream generator. Many various designs are installed without being used for an extended length of time to evaluate performance and return on investment.

Tidal Energy Converters Fall Into Six Categories, According To The European Marine Energy Centre:

Venturi devices, Archimedes screws, and tidal kites are all examples of wind turbines with various blade orientations. When compared to an open turbine in a free stream, a ducted turbine rotor can create up to three to four times the amount of power generated by the same amount of energy.

Currently available tidal stream generators produce power ranging from 100kW to 2MW. There is usually only one blade on each turbine’s rotors, although this can be changed during tidal exchange if necessary.

Tidal Energy’s Advantages:

This renewable energy comes from the tides. In which there are many advantages and very few disadvantages. To begin, tidal energy is a more environmentally friendly and efficient kind of renewable energy than wind energy. Even though water has a cheaper initial cost, it has a higher density and is more efficient than solar energy. Tidal energy is also more reliable because it is more predictable than wind and solar power.

Tidal Energy

When the tide speed is modest, tidal energy can be used. As a result, the turbines can operate at a lower speed, reducing their impact on the surrounding ecosystems.

It has the potential to be a less expensive resource. Compared to other renewable energy sources, building and maintenance costs are significantly lower. No carbon dioxide, greenhouse gases, or garbage is produced when using tidal energy.

Tidal Energy’s Effects On The Environment:

The most significant risk with tidal energy is that the turbine blades will strike or entangle marine life. The chance of organisms being dragged towards or through these devices increases with increasing water speed.

The same may be said for any other form of offshore renewable energy as well. The development of electromagnetic fields and audio outputs has also raised questions regarding the potential impact on marine life.

Comparison Of Tidal Energy To Other Renewables:

Like wind turbines, tidal stream generators use the power of water currents to produce electricity. In contrast to wind turbines of comparable rating, a single tidal turbine has more considerable power-generating potential. Because water has a more significant density than air (water is about 800 times the density of air),

so that even at low flow rates, a single tidal generator may provide substantially more electricity than a wind turbine of comparable capacity. Although tidal energy plant construction has a high starting cost. In theory, tidal energy generating facilities should be able to operate indefinitely. It lowers their overall cost over time.

Tidal Energy

Delicate, inefficient solar panels necessitate frequent repairs and upkeep at a high cost. Wind turbines spin at a considerably faster rate than conventional turbines. The moving parts can be worn more quickly. Installing geothermal energy can be pretty expensive, as it necessitates drilling deep wells or leaving wide open spaces.

In previous issues of our newsletter on sustainability, I’ve talked about different methods of generating alternative energy. Sun photovoltaics and other renewable energy sources are being utilized (PV), which can contribute to reducing the load on our power grid by using less energy.

Geothermal energy and heat pump systems have been written about by my colleague Paul Greenwalt on his blog. Another emerging technology is wind turbines. The tides, not solar, wind, or geothermal power, are a frequently ignored clean, renewable energy source.

We’ll examine tidal energy in depth in this article. The use of which has increased steadily since the early 2000s and shows tremendous promise as a clean, renewable energy source for coastal locations. The process by which ideas are discovered and put into practice on a large scale. For many people, renewable energy sources are a global necessity at this point.

Global Air Pollution

Global air pollution from carbon dioxide emissions and acid rain threatens our planet’s environment and water resources. Our finite natural resources are being depleted (e.g., coal, oil, natural gas). Our power plants and electrical infrastructure are also reaching their limits. We may also free ourselves from fossil fuels by using alternative energy sources. The country’s reliance on oil imports from other countries and the international policies go hand in hand. We can also minimize our dependency on nuclear power because of it.

As a result, the danger of safety lapses and waste byproduct issues associated with this type of energy source is reduced. Due to recent developments in turbine technology, it’s possible that humanity could someday harness the power of the ocean to generate significant amounts of electricity. In particular, Tidal streams and major thermal current systems like the Gulf Stream are essential to consider. It can be referred to as “marine current power” instead.


The Moment Has Come

Efforts to develop and expand sustainable, renewable energy sources are more critical now than ever before. In the long run, relying less on fossil fuels to generate energy can reduce air pollution. And by helping to protect our planet’s natural resources.


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