
- It produces 21% of the renewable energy and supplies over 1/7 of the earth’s population with power.
- It is a very positive energy source as it produces few fossil fuels or what is called green house gases.
- It is very cost effective. No need for fuel and no need for fossil fuel fluctuations. No need for fossil fuels means they don’t create CO2 directly. Note: traditional fuel is often used to provide the power for pumper storage solutions
- Hydro electricity produces the least of carbon dioxide when production, construction and running come into consideration
- The hydro power plants can last long periods and are normally automated.
- The dams for hydro power cost little to build. Return on investment (ROI) can be realized in a few years.
- Reservoirs can also be used for fishing, sports and irrigation. They can be constructed in areas where flooding is prone.
- It requires large areas of land and submerges a once dry area in water. This affects the natural surroundings and the local environment.
- It can dissolve the oxygen content of water creating damage to the fishes. People living nearby would have to relocate because of this.
- Reservoirs often become full of sediments because the water carries silt and deposits from the area, causing more problems to the dam.