You have in all likelihood seen or used a calculator that uses solar energy and you would understand precisely how handy they can be. You don’t have to invest in new batteries and they seem to operate indefinitely, provided there is enough light.

Maybe you have also noticed the an increase in the use of solar panels in much larger products, like emergency road signs, telephone boxes and illumination for car parking stations. An increasing number of these convenient devices are now powered by the sun rather than using the more traditional types of electricity.

So: how do they work?

The answer is photovoltaics. This technology has been in existence since the late 1950s and was used principally in space, running the electrical devices in satellites. Presently, the technology is utilised in more ordinary applications. Some people believe that the energy of the sun will sooner or later be controlled to drive economical motor vehicles and that just about all of our power needs will be cost free.

Solar pv panels, also known as photovoltaic panels, create electrical power by way of the conversion of solar radiation into direct current (dc) electricity using semiconductors. This direct current is what we obtain from mains or grid power. An inverter is essential to turn dc power to ac, which is the type of electricity utilized for such functions as boats, electric cars and roadside emergency telephones.

Each of these solar pv panels have a number of cells and these cells consequently contain photovoltaic material. The most generally used materials are made of silicon. This material has to be protected from the ravages of weather: normally this means it is crammed snugly behind a sheet of glass. For situations where an increased quantity of power is needed, the panels are joined in arrays.

Within the last ten years, the production of solar pv panels has grown to be more efficient , in response to a growing demand for renewable energy sources. Photovoltaic panels are creating power in more than 100 countries world wide; in spite of the actuality that this electricity supply is but a very small fraction of the globe’s electricity production, it is the most rapidly growing technology of its kind.

These technological advancements have as well resulted in pleasing facts for the consumer : the scale and quality of production has expanded, whilst the expense of photovoltaic panels has lowered. A win-win situation!

Government authorities in a lot of countries internationally have additionally released offers for purchasers for the installation of solar pv panels, including rebates and feed-in tariffs. Remote areas and villages don’t have to be dependent on the often prohibitive expenditure of connection to a grid when they make use of solar energy. This enables telecommunications accessibility to all regions of the earth, both on land and at sea.

Solar pv panels also assist in making roads less dangerous, with the use of emergency and warning lights to inform people of road work or unsafe driving conditions. This consequently can have the possibility to save lives, using a cost effective means.

In developing countries, solar energy is a cost effective means by which the majority of the population is able to have access to electricity and thereby lead an improved quality of life. It enables electrification of schools and community centres. When people have access to power, it can extend the amount of time by which productive work can take place, allowing for night time craft work to add to other forms of income. In natural disaster scenarios, emergency medical relief squads have the ability to set up well equipped triage centres.

Photovoltaic panels have also been designed for recreational use: to power campsites for the adventurer or to generate a reliable power source for a computer when on the road.

As we witness non-renewable resources like coal and gas disappear, it makes sense to take advantage of the sun’s rays.

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