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Hydroelectric Energy

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.

  • Often requires substantial modification of water resource.

  • Initial installation cost can be high.

  • In colder climates, freezing of pipes, can be a problem.

  • Moving parts will eventually 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.

    To go back to the renewable energy page.

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