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Hydroelectric Energy

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Hydroelectric energy is a renewable energy source using the hydrologic cycle of water, which involves evaporation and the flow of water due to gravity.

Accessing this energy from flowing waters can produce low-cost electricity. Today, this is the largest form of renewable energy in the world.

Hydroelectric Energy Advantages

  • Out of all the renewable energy systems this has the lowest cost per watt hour.
  • A consistant all year round power output.
  • Usually this system doesn’t require a large battery bank.
  • Unlike many other renewable energy systems, this one is not obtrusive.
  • It is relatively quiet.
  • Minimum maintenance is required.

Hydroelectric Disadvantages 

  • Water supply is not always available.
  • Regularly needs generous tweaks of water resource.
  • Setup & Installation pricing can be expensive.
  • In colder countries/areas, freezing pipelines can be an issue.
  • Mechanical/Moving parts will, in time, wear out.

The larger installations have created problems of their own. By blocking rivers with massive dams problems have arisen including;

  • Habitat destruction of local wildlife
  • Prevention of fish passage
  • Displacement of local communities

However, done correctly, it can be a sustainable and non-polluting source of energy that can help decrease our dependence on fossil fuels and reduce the threat of global warming.


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