The photovoltaic system must be considered an investment and not a cost, the invested capital is recovered over time, on average in 6 years. Most companies are certified and use safe and non-polluting materials. To be sure of quality, avoid overly cheap solutions and all products that do not have a guarantee, in particular opt for those Made in Italy or of European origin. The KIWA and IFI certifications guarantee the absence of dangerous, toxic and polluting materials. The first solar panel 100% recyclable, it was born in Italy and uses a thin film layer or CIGS (direct bandgap), with a constantly growing market.

In prezzi dei pannelli fotovoltaici are in sharp decline, according to the International Renewable Energy Agency, down 70% compared to 2009, which allow energy to be produced at a competitive cost compared to conventional sources.

For companies, there will also be the possibility in 2018 to take advantage of the super depreciation of 130% in the case in which the plant is classified as a "movable" asset, with an ordinary depreciation coefficient of 9%. Those assimilated to real estate will be excluded, having a depreciation coefficient of 4%, lower than the threshold of 6.5%.

Condominiums and hotels will enjoy a 75% tax deduction until 2021 for the installation of photovoltaic systems and storage systems that power common utilities, such as elevators, as part of building renovation work.

Photovoltaic systems installed on the roofs of houses benefit from a 50% tax deduction until December 31, 2018. The State gives you the opportunity to halve the costs by "returning" half of the expenses incurred to those who choose photovoltaics. The return does not occur by bank transfer or monetary settlement but in the form (and by means) of tax relief spread over the 10 years following the year of installation of the system.
In the domestic-residential context this type of incentives for photovoltaic concerns only natural persons (or condominiums or cooperative members) who are IRPEF contributors. There are no tax reliefs, therefore, for photovoltaic systems installed by companies, corporations or commercial activities.
Anyone who installs a photovoltaic system can therefore take advantage of IRPEF tax deductions to recover 50% of the expenses incurred for the construction of the system.

Installing a photovoltaic system increases the commercial value of your home. To calculate the increase in value, simply take into account the power of the system, its duration, the amount of energy produced and the cost of energy;

On Grid Photovoltaic System

The On Grid Photovoltaic System (also called Grid-Connect or Hybrid) is by definition electrically connected to the national electricity grid (Enel or other distributor), and with it gives rise to a two-way energy exchange.

On-grid photovoltaic system: The components

The primary components in an On Grid system are:

• the photovoltaic generator, made up of photovoltaic modules;

• the inverter capable of converting direct current (produced by the photovoltaic field) to alternating current (from the electricity grid/home utilities) and necessary to exchange the energy produced by the photovoltaic system with the national grid;

• the meters, one of which records the electrical energy produced by the photovoltaic field, and the other the energy that flows to and from the grid (bidirectional).

On-grid photovoltaic system: The exchange on site

This two-way relationship between a private photovoltaic system and the electricity manager is called Exchange On Site (SSP), this results in an explicit obligation to request authorization for the installation of this system and the completion of various bureaucratic procedures.