Hydroelectricity is electricity generated by hydro power by the earth’s gravity of falling or flowing water.
Hydroelectricity is one of the most use renewable energy in the world. When a hydroelectric power plant is construct it produce no waste or pollution, no release of greenhouse gases and no CO2.
Hydroelectric power plants produce about 20% of the world’s electricity in 2006, and accounted for about 88% of all renewable energy.
Hydroelectric energy advantages
Here is a list of the pros of hydroelectric
Hydroelectric energy disadvantages
Here is a list of the cons of hydroelectric
Little to no pollution, no waste, no heat, no chemical, it is a controversial as renewable energy because of the impact of flooding in the surrounding area.
Hydroelectric produce virtually free electricity after the initial cost of the building of the hydroelectric dam because it use the earth’s gravity of falling or flowing water.
Hydroelectricity is the most use renewable energy, making it more reliable than solar, wind and tidal energy.
Large body of water can be store above the dam in case of more demand or drought.
Hydroelectric power can easily be start or stop by stopping or changing the water flow.
Hydroelectric power plants require little maintenance and last for many decades.
Hydroelectric installations could be use to breed fish or other river life.
Hydroelectric power plants are much safer than nuclear power plants.
Building large-scale hydroelectric power station is very expensive and takes years to build.
When building hydroelectric power station requires large area of land upstream to be flood, flooding the homes of animal and sometime human.
Flooding disrupt the ecosystems, disrupt the natural seasonal changes in the river and the lost of land for agriculture/recreation.
Local fish cannot swim upstream through hydroelectric station for spawning.
Fish are kill by swimming through the Hydroelectric station because of the turbine.
If there is a drought, the dam can become ineffective or it may produce less energy than expected.
Run-of-the-river hydroelectric power plants could affect the mobility of fish and other river life.
There are a small number of suitable locations for large-scale hydroelectric stations.
When hydroelectric power station is constructed, the water quality downstream can be affected.
Sedimentation may clog the water flow in the hydroelectric station.
When a hydroelectric station is destroy by natural disasters, it may cause huge amount of damage downstream.
When a hydroelectric station is built in the forest, there are more greenhouse gases release from decaying plants.