Photovoltaic Panels
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The photovoltaic panel, also called photovoltaic module is a special type of solar panel that has the capacity to generate electricity when exposed to light of the Sun

This is also the main feature that differentiates it from the solar panel used to produce hot water for medical purposes (personal hygiene or washing dishes) or for heating.

Unfortunately, current technology allows us to convert to electricity only 6 / 15% of solar energy striking the photovoltaic panel, while the solar thermal panels can convert the energy of the sun in hot water with yields above 80% .

The other flaw of photovoltaic modules, the cost is still very high, perhaps above all due to the still poor dissemination of this technology.

This necessary preconditions have been made to basically understand that first it is better to install a solar system for the production of hot water, and then think about the possible photovoltaic system for the production of electricity, if only because for a plant solar hot water will spend about 1,500 - 3,000 $ and we get energy from the sun equal to about 1,500 - 3,500 Kwh of energy per year, while for a facility in photovoltaic panels will spend 7,000 - and 10,000 $ yielding 1000 - 2000 Kwh per year.

These calculations are used to give a general idea of costs, certain is that if you are able to receive contributions of regional or state funding for the installation of photovoltaic panels, then the speech of the production of electricity with photovoltaic modules becomes feasible and interesting!

A plant-type photovoltaic aesthetically is in a very similar to that of solar thermal forced circulation, because even in this case, the photovoltaic modules are lying comfortably on the roof and, visually, it appears just outside your home.

The electricity is normally produced at low voltage and current, then to be used in our homes should be converted into alternating current at 220 volts: this is achieved through the use of a tool called 'inverter'.

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In a nutshell a plant module consists of a series of panels lying on the roof, an inverter and a meter provided by Enel, which is used to enter the energy directly into electricity grid of our city. This runs counter, however, the opposite of what normally installed in the home: has the energy produced by our PV modules and communicate virtually energy utility company how much energy we have produced.

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