Systems that use solar energy to produce electricity

The advantages of photovoltaics

» Immediate savings on your electricity bill

» Vendita to the GSE (Gestore Servizi Energetici) of the energy produced and not consumed

» Tax deductions

» Purchase cost fully covered by bill savings, GSE refunds and tax deductions

  • Energy production at the place of use
  • Absence of pollutant emissions
  • The non-use of fossil fuels
  • Increased reliability due to the absence of moving parts (system life typically exceeds 20 years)
  • Low operating and maintenance costs and modularity of the system

Elements of a photovoltaic system

  • Photovoltaic modules (or panels) that use the photovoltaic effect to convert solar energy into electrical energy.
  • Inverter, to transform the direct current produced by the modules into alternating current, which can be used in domestic electricity grids.
  • Wiring and switchboards interconnecting the whole system.

Solar energy is converted directly and instantly into electrical energy without the use of fuel. Some specially ‘doped’ semiconductors generate electricity when exposed to solar radiation.

The electrical output of a photovoltaic system, which is expressed in kWh, is the result of several factors including: solar radiation incident on the installation site; inclination and orientation of the modules; presence or absence of shading; and the efficiency of the system components.

You must know that…

A photovoltaic system located e.g. in Rome can generate 1460 kWh/year for each kWp of photovoltaic modules installed, reducing the cost of energy bills by up to 50 per cent. Even in northern Italy, in cities like Milan and Turin, a photovoltaic produces up to 1,200 KWh/year, enough to reduce the utility bill by 50%.

It is important that solar panels are oriented to the south to allow the panels to capture the most sunlight during the day and achieve maximum productivity. However, east- or west-facing installations can also perform satisfactorily, albeit with slightly lower efficiency.

One aspect not to be forgotten when talking about photovoltaic systems is the on-site exchange, which allows the electricity produced by the system to be injected into the grid when not being consumed. This energy is then sold to the GSE, receiving a cash contribution that increases the economic benefit of energy savings.

To maximise savings...

Use energy-intensive appliances, such as washing machines and dishwashers, during the day. This maximises self-consumption and minimises the use of electricity from the grid.


Photovoltaic bonus

Non-repayable grant for families with ISEE less than EUR 15,000. This contribution corresponds to 60 per cent of the costs incurred for the installation of the photovoltaic system, with an expenditure limit set at €4,800.

Restructuring bonus or 50% Irpef deduction

Tax incentive for the recovery of a percentage of expenses incurred for building renovation. The deduction amounts to 50 per cent of the expenses incurred, with a maximum limit of €96,000 per real estate unit.

Ordinary Ecobonus

This incentive provides a 65% deduction of the expenses incurred for the installation of photovoltaic systems. The ecobonus can be used for works on existing housing units and buildings, which have already been registered or for which an application for registration has been submitted.


It allows the installation of photovoltaic and solar panels at no cost, provided that at least one driving intervention is associated with the redevelopment project. In this way, 70 per cent of the expenditure incurred is reimbursed in the form of a deduction (in five equal annual instalments), an invoice discount or a tax credit.

These bonuses and incentives can make the installation of storage and photovoltaic systems an even more worthwhile investment. Contact us to find out which incentive is best suited to your needs

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