There are many advantages offered by the installation of a photovoltaic system: it brings energy to the house, allows considerable savings on bills and contributes to the protection of the environment.

The photovoltaic system is an electrical system, formed by several photovoltaic modules, which use the energy of the sun to produce electricity using materials sensitive to sunlight (such as silicon) transforming and channeling it into electrical cables to other components of the plant. 3 kWh of electricity is usually sufficient for a dwelling and 13-15 modules of 200-220 watts connected in series are sufficient to produce it.

The panels are connected to a silencer, which allows to disconnect the system in case of interventions on the network or in the presence of peaks of voltage. For this reason it is essential to install also an electronic monitoring system connected to the internet, to allow timely interventions in case of malfunction and to control the production of energy of the plant.

What are the advantages of a photovoltaic system?

• Considerable savings on consumption in the bill: thanks to the photovoltaic system the house is no longer dependent on the national grid operators and is able to produce independently the energy needed;
• Increase in the value of the property: installing a photovoltaic system increases the commercial value of the house;
• Environmental sustainability: the sun is a natural resource that allows you to use clean energy that does not pollute. For each kWh produced, it saves the release into the environment of 700 grams of CO2;
• Exchange on the spot: the photovoltaic system not only saves but even earns. As the circuit operates in the interchange regime with the local electricity network, in fact, the energy needed is bought by the operator paying a bill. You no longer exchange energy but you enter and, for how much you enter, you receive a contribution for exchange.

The photovoltaic systems installed on the roofs of houses benefit from a tax deduction of 50% in the form of tax reductions spread over the 10 years following the year of installation of the plant. In the domestic-residential sector, this type of incentive for photovoltaics concerns only natural persons, condominiums or members of cooperative contributors IRPEF, thus excluding companies, companies or commercial activities, for which, however, it will be possible to take advantage of the 130% over-depreciation in case the plant is qualified as mobile, with a daily depreciation coefficient of 9%. Those assimilated to real estate will be excluded, having a depreciation coefficient of 4%, below the threshold of 6.5%.

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