Solar PV (Photovoltaics) - Produce Your Own Energy
Solar PV photovoltaics are a series of cells that have within them materials that can convert solar radiation into direct current electricity. More specifically it is the technology that can convert sunlight into electricity. The sun's rays can give up to one thousand volts of electricity per square meter of the earth's surface on a sunny day. If all of that electricity could be harnesses we would be able to power our homes for free.
The use of solar PV is wide. It can be used to create electrical power in the home, to power the electric cars, and street lights to name a few. Photovoltaics have been used as far back as 1958, however their application was primarily in space. They are most widely used at present in solar powered calculators which need only light to operate.
PV cells have materials called semiconductors which are silicon and are most commonly used. When light hits the cell a portion of that light is absorbed in the semiconductor material. Energy in that light is transferred to the semiconductor which loosens electrons which then flow freely in a certain direction. This flow of electrons is a current that can be used as power when metal contacts are placed at the top and bottom of the PV cell. The current and the cell's voltage tell us how much wattage the solar cell can produce.
The use of solar energy is not yet prevalent enough to find everyone using it but there are a few people that feel they can help the environment with the use of solar PV. With the cost of electricity on the rise and the economy spiraling downward, more people are interested in saving on their utility bills or totally eliminating them with the use of solar power. Solar PV is an alternative power generating resource that can save money and do its part in saving the planet. There is much talk about global warming and the greenhouse effect and the use of solar PV, as an alternative power source, can make us feel good about ourselves as we do our part.
Interested in solar power?
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Article Source: http://EzineArticles.com/?expert=Daniel_Lanback
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Installing Solar Photovoltaic Systems Installation Class
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