Just about everyone has seen or used a calculator which uses solar energy and we understand precisely how handy they are. You don’t have to invest in new batteries and they appear to operate for a long time, provided that there is plenty of light.
Maybe you have also observed the an expansion in the use of solar panels in more substantial products, such as emergency road signs, telephone boxes and equipment and lighting for car parking stations. More and more of these useful products are now powered by the sun instead of relying upon the more standard types of electricity.
So, you ask: How do these things work?
The answer is photovoltaics. This technology has been in operation from the latter part of the 1950s and was used most often in space, operating the electric powered devices in satellites. Currently, the technology is used in more every day applications. Many people believe that the potential of the sun will ultimately be controlled to operate effective motor vehicles and that just about all of our electricity demands will be cost free.
Photovoltaic panels, also known as pv panels, produce electricity through the conversion of solar radiation into direct current (dc) electricity making use of semiconductors. This direct current is what we get through mains or grid power. An inverter is required to convert dc power to ac, which is the form of electricity used for such applications as boats, electric cars and roadside emergency telephones.
Each of these solar pv panels consist of a quantity of cells and these cells in turn contain photovoltaic material. The most generally used materials are made up of silicon. This material must be protected from the elements: usually this means it is packed snugly behind a sheet of glass. For scenarios where a significantly greater level of electricity is required, the panels are connected in arrays.
Within the last ten years, the creation of solar pv panels has become more efficient, in response to a rising demand for renewable energy sources. Photovoltaic panels are creating electricity in over 100 countries globally; despite the fact that this electricity source is but a miniscule percentage of the world’s electricity production, it is the most rapidly growing technology of its type .
These technological improvements have also resulted in pleasing facts for the consumer: the scale and quality of production has expanded, whilst the pricing of photovoltaic panels has lessened . A win-win situation!
Government authorities in several countries internationally have additionally announced rewards for consumers to install solar pv panels, including rebates and feed-in tariffs. Remote towns and villages no longer have to be dependent on the typically exhorbitant costs of connection to a grid when they utilise solar energy. This allows telecommunications access to all corners of the earth, both on land and at sea.
PV panels also assist in enssuring that roads are more safe, with the use of emergency and warning lights to advise drivers of road work or hazardous driving conditions. This consequently has the potential to save lives, using a cost effective means.
In developing nations, solar energy is a less expensive means by which most of the population can have access to electricity and as a consequence lead a better quality of life. It allows for the electrification of schools and community centres. When individuals have access to power, it can increase the time by which productive work can occur, allowing for night time craft work to supplement other forms of income. In disaster situations, emergency medical relief teams are able to establish well equipped triage centres.
Photovoltaic panels have also been developed for recreational use: to power campsites for the traveller or to deliver a reliable source of electricity for a computer when travelling.
As we see non-renewable resources such as coal and gas disappear, it makes sense to take advantage of the sun’s rays.
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