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The harnessing of tidal energy is still very new. In the past, tidal energy was only able to be harnessed with a barrage across a narrow body of water. Now, there are turbines, tidal fences, and the ability to use tidal lagoons. These methods aren't currently being used commercially, but as they develop it is likely that they will be used on a larger scale.

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1. The installation of barrages or turbines is costly

2. The installation has a negative impact on the ecosystem as it disturbs aquatic life

3. Tidal collection does not currently produce very much energy

4. This method of energy production only works in areas with large tidal differences. For example, the US currently has no commercial turbines or barrages as it would not be efficient.

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1. Tidal energy is a renewable resource— tides are controlled by the moon

2. Tidal energy is reliable and predictable— unlike solar, there are no "cloudy days"

3. There are different water sources to place devices in— tidal streams, barrages, and tidal lagoons are all options for collection

4. There are no fuel costs involved with the production of tidal energy

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(more disruptive)

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(less disruptive)

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South Korea has the largest generation capacity at 254 MW

France has the second largest at 240 MW

The third largest is in Canada, with the potential to produce 20 MW

China, Russia, and Ireland also have tidal energy collection facilities

The US has none

Mostly MEDC, as tidal energy production is new and installation of turbines/barrages is expensive

Countries also must have large tidal differences

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https://www.eia.gov/energyexplained/index.php?page=hydropower_tidal

https://www.nationalgeographic.org/encyclopedia/tidal-energy/

https://renewablenw.org/node/wave-tidal-energy-technology

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In some areas, there are tidal ranges of up to 40 feet. In order to efficiently produce tidal energy, it is best to produce it in an area with at least a 10 foot tidal range. There are several methods of collection, but most involve using the force of tidal waters to flow through a turbine. Because these methods do not "take up" any resources other than space, tidal energy is a renewable resource.