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.
- 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.