"The term renewable energy generally refers to electricity supplied from renewable energy sources, such as wind and solar power, geothermal, hydropower and various forms of biomass. These energy sources are considered renewable sources because their fuel sources are continuously replenished."
- Key renewable energy sources:
o Hydropower, hydraulic power or water power is power that is derived from the force or energy of moving water, which may be harnessed for useful purposes
o Wind power is the conversion of wind energy into a useful form, such as electricity, using wind turbines. is becoming increasingly popular and production costs are dropping rapidly, making it increasingly competitive to fossil power production
o Solar power is by far the Earth's most available energy source, easily capable of providing many times the total current energy demand
o Biomass energy is the term used to describe the generation of energy from organic sources. The energy stored in plants can be captured for energy generation by several different methods such as decomposition, combustion or gasification
o Geothermal energy involves using the earth's heat to supply power. Geothermal heat pumps can be used nearly anywhere
- Advantages of Renewable Energy:
o We can use it repeatedly without depleting it
o Can help reserve fossil resources for future generations
o No contribution to global warming or greenhouse effects
o No polluting emissions
o Since their sources are natural the cost of operations is reduced
o Saving on health and its costs
- Disadvantages:
o It is difficult to produce the large quantities of electricity their counterpart the fossil fuels are able to.
Since they are also new technologies, the cost of initiating them is high.
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