Renewable Energy - Renewable energy is natural energy which does not have a limited supply. Renewable energy can be used again and again, and will never run out.
Renewables are an infinite source of energy. There is additional information on renewable energy sources below.
Renewable energy has been in use for thousands of years in one way or another. An example of this is how our ancestors used the wind for sailing, and we now use the wind to generate electricity.
Below is a list of renewable energy sources:
Although biomass is a renewable energy, this should not be mistaken for a clean energy source. Although biomass is significantly cleaner than most fossil fuels such as coal and oil, it still produces sulphur dioxide during electricity production.
Hydro energy, commonly referred to as "hydro power", is a very clean and powerful method for generating electricity from a trapped wall of water.
The disadvantage to hydro power is the cost to the surrounding environment, as land upstream needs to be flooded, and land downstream will be drained during construction. This can have disastrous effects for wildlife and life in the rivers.
Geothermal energy is a reliable energy source, depending on your location. It is commonly used to provide a source of heating or hot water for households using "ground source heat pumps", and also can be used as the energy source for power stations in appropriate areas.
Solar energy can be somewhat unreliable depending on the placement, location, and surrounding environment of the solar cells. The greater the solar energy supply, the more effective the cells will be, however, the more heat a solar panel receives, the more unreliable it can be.
other types include Tidal, Wave, Wind and Wood Energies that utilize renewable technologies.