LOG IN WEDNESDAY 29 AUGUST 2018 RENEWABLE SOURCES PLANTS » PHOTOVOLTAIC Home services design maintenance Renewable sources plants Solar Thermal Micro-Wind Photovoltaic Who we are Contact us our plants Check your system Check out GSE incentives DOWNLOAD THE BROCHURE PHOTOVOLTAIC Electricity from the sun A photovoltaic system transforms solar energy directly into electricity, without producing any type of polluting emissions and without any moving parts, which ensures great reliability in operation and minimal maintenance requirements. The fundamental components of the system are the photovoltaic modules (or panels), made of a semiconductor material (often crystalline silicon), capable of producing electricity by exploiting solar radiation. An electronic device, the inverter, then transforms the direct current generated by the modules into alternating current that can be used by the end user. Finally, electrical panels and connection cables complete the system. The optimal conditions for the exposure of a photovoltaic system in Italy are the orientation to the south and an inclination on the horizontal between 200 and 40 °. However, various conditions (eg south-east or south-west or inclinations of 10 °) involve a very limited loss of energy and are therefore to be considered completely acceptable. On the other hand, the presence of obstacles that can cause significant shadows must be avoided. What can I do with a photovoltaic solar system? Photovoltaic systems can operate in parallel to the electricity network ("grid-connected systems) or autonomously (" stand-alone "systems). The" stand-alone "systems supply users in isolated areas, that is, far from the electricity grid, such as for example mountain shelters, weather stations, refreshment centers in park areas, etc. Any excess of electricity produced with respect to demand accumulates in the batteries, to be then used in times of scarce insolation or during the night. The most common systems, however, are the "grid-connected" ones, used to power domestic, industrial, agricultural users, etc. In these systems, the equipment (eg household appliances, lighting, computers, air conditioners) are powered by the photovoltaic system, through the inverter, if solar energy is available or, alternatively, by the electricity grid. Therefore, the continuous supply of energy to the user is guaranteed in a completely automatic way. Furthermore, in order not to waste solar energy, the excess electricity produced by photovoltaics in moments of full sun makes the reverse path, being fed into the electricity grid and sold or deducted from the bill. In essence, therefore, the electricity grid functions as an infinitely large storage battery, To summarize the possible applications very simply, we can therefore say that, since a photovoltaic system produces electricity, wherever there is a demand for electricity, a photovoltaic system can make a useful contribution. Copyright (c) 2018 MGM Energia Privacy Terms of use