After an increase in July, Italians’ electricity bills rose by 29.8% in October and would have risen by 45% without government intervention.

A typical family (3kW of power with a protected tariff and 2,700kWh/year of consumption) will spend €631 on electricity this year, 30% more (+€145) than in 2020.

What is happening and the forecasts, which are certainly not pleasant for the future, are increasing the interest in photovoltaics, just think that today, if you use the energy produced by your system, you have 40% more savings than last year.

Renewables are therefore the solution to expensive energy

The logic is simple and straightforward: the value of each kWh self-consumed* (through your own system) increases as the avoided cost of purchasing the same kWh from the grid increases.

Practical example for a private individual

Let’s go back to the previous example: a typical household, with 2,700kWh of electricity consumption per year, decides to install a photovoltaic system of which they self-consume 810kWh/year, i.e. 30% of their needs (this is a common case for a private individual who decides to install only the system on the roof, without the storage system).

In 2020, this household would have paid €483 for energy without the PV system and €368 with the system, saving €115 (23.8% of the electricity bill).

In 2021, the same household will pay €631 for energy without a PV system and will pay €471 with the system, saving €160, or 40% more than in 2020.


Practical example for a small company

Let us now consider a small company with 10,000kWh of electricity consumption that decides to install a photovoltaic system to cover 30% of its needs (for a company, self-consumption is usually higher than 30%).

In 2020, this company would have benefited from € 409 from self-consumption, or 16.3% of its electricity bill without a photovoltaic system.

In 2021, the same company would benefit from € 586 from self-consumption, equivalent to 21.4% of the electricity bill without a photovoltaic system.

The savings achievable with a photovoltaic system for the company in the example increased by 43% in 2021.


This calculation, it should be added, does not include income from feed-in tariffs or remuneration of energy fed into the grid in the assessments, but simply the savings made by cutting bills.

Clearly, a photovoltaic system requires an initial investment, but – without taking into account benefits such as the 50% deduction or the 110% Supebonus for private individuals and the Nuova Sabatini and other national and regional incentives for companies – in the light of the increases, the initial cost will be paid back in even less time than in 2020.



*self-consumption = the possibility of consuming the electricity produced by the photovoltaic system on site – in one’s own home, in an office, in a production plant, etc. – to meet one’s energy needs. – the electrical energy produced by the photovoltaic system to meet their own energy needs.