Hydro energy is a type of renewable energy that has been used for many centuries. It is a clean and reliable source of energy that is produced by using the power of flowing water. However, like any energy source, it has its pros and cons. Here is a list of the pros and cons.


  1. Clean and renewable energy: Hydroelectricity is a clean and renewable source of energy meaning it does not produce greenhouse gases or any air pollution. It is also a long-term and sustainable source of energy, as water is continuously replaced through natural processes like rainfall.

  • Low operating costs: Once a hydro power plant is built, the operating costs are quite low compared to the other forms of renewable energy options.

  • Reliable and efficient: Hydro power plants can operate continuously and can provide a reliable source of energy. The hydro power plants can be quickly started or stopped, which can help you control the amount and duration of energy needed.  

  • Multi-purpose usage: Hydro power plants can provide multiple benefits, such as flood control, irrigation, and water supply in addition to energy generation. This makes it a valuable investment for both energy and non-energy reasons


  1. Environmental impact: If there is no existing water source then the construction of large dams can have a large environmental impact on local ecosystems, affecting fish populations and river ecology.

  • Upfront costs: The construction of hydro power plants can be expensive and require significant upfront payment, especially large-scale projects.

  • Water availability: Hydro power plants rely on a consistent supply of water, which can be affected by droughts or climate change. In places where the water source is unreliable, hydro energy is not a viable option.


Hydro energy is a clean, reliable, and renewable source of energy that has many benefits. However, where there is no existing source of water, then the construction of large dams has large environmental impacts, and the upfront costs of building the hydro power plants can be high. Furthermore, water availability can be a challenge in some places. Despite these cons, hydro energy will probably continue to play an important role in helping us reduce our dependence on fossil fuels and help reduce global warming.