Hydropower is a renewable source of energy that is generated when water flows

through turbines and generators to convert the kinetic energy of the flowing water

into electrical energy. This method of generation relies on huge dams or diversion

structures that are built to alter the natural flow of water.

Since this source of energy is renewable, there is no concern that this source will

ever run out unlike fuel. Another significant advantage is that hydropower is a clean

energy source that does not cause any pollution in the environment. Moreover, this

type of energy is independent of weather conditions where engineers can control the

flow of water on demand unlike other energy sources like solar or wind energy.

However, this source of energy has negative impacts on the environment as well. To

start with, dams limit the flow of water reducing oxygen levels in water which makes

difficult for many fish species to survive. Those dams also disturb the migration of

fish. In addition to that many people consider those hydropower plants as sight


Regardless of the possible drawbacks of hydropower, it is still the most widely-used

renewable power source, where it accounts for more than 54% of the global

renewable power generation capacity.

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