The price of roof-mounted residential photovoltaic (PV) systems in Italy decreased from 3. The growth of the solar PV sector in. . At the same time, electricity prices in Italy have been steadily increasing, making solar power not only a sustainable solution but also a financially smart one. By generating your energy, you can significantly reduce your utility bills and protect yourself from future price increases. According to data, among the hardware costs, the largest share was attributable to modules, whose cost amounted to 0. 37 euros per watt on average in 2023. 6 kilowatts, meaning a cost of about $11,803 for a solar installation, or $16,878 before the 0 federal solar tax credit is applied.