Alternative Sources of Energy

What is energy? The word is taken from Greek “energos,, which means “active working,,. It can be characterized as the physical and mental strength that makes you able to be active, or in other words, it is the ability to do work. Energy comes in many different forms, such as kinetic, thermal, electrical, nuclear and other.
Alternative energy refers to energy sources which are not based on the burning of fossil fuels or the splitting of atoms. There are some possible alternatives, such as hydropower, solar energy, wind power, geothermal energy, tidal energy, and waste utilization.
Hydropower had the greatest influence on peoples lives during the 20th century. It played a major role in making the wonders of electricity a part of everyday life and helped spur industrial development. Hydropower produces 24 percent of worlds electricity and supplies more than one billion people with electric energy.
Solar energy is one the most promising sources of energy for the future. The use of solar energy can be either passive or active.
Wind power is another alternative energy source. Electricity generated by wind turbines is absolutely free of emissions. The application of wind energy converters is attractive only is areas with a high average wind speed, wind turbines can spoil the view of the landscape.
Geothermal energy is an alternative energy source.

Kate