The clean energy and in particular solar panels are attracting more and more companies wishing to improve the energy efficiency of their building. In the past, these installations have been the subject of much controversy. However, with the technological breakthroughs of recent times, things are starting to change. What about at the present time? Are solar panels profitable? What investment should you consider to have an installation that holds up?

HOW MUCH DOES THE INSTALLATION OF PHOTOVOLTAIC PANELS COST?

The cost of installation depends on several factors:

·        Need or not to do a preliminary study;

·        Price of equipment and installation (depends on the power envisaged);

·        Cost of connecting the installation to the electrical network;

·        Interest on the loan made to finance the work.

Of these parameters, the price of the connection is the most complicated to predict. If we have a building that requires more than 36 KVA, we will need to extend the network in addition to the connection. In this case, the work can be very expensive.

AFTER HOW LONG ARE THEY PROFITABLE?

The profitability of solar panels depends on the total electricity consumption, but also on the installation, the orientation of the building, the inclination of the roof and the geographical area of ??installation (level of sunshine).

Previously, it was more profitable to sell your electricity. But with advances in solar panels, it is becoming more and more advantageous to reinject it into your electrical circuit.

To put it simply, a family consumes around 3,100 kWp of electricity per year. With an investment of € 15,000, this couple will make their installation profitable in 7 years. However, this estimate dates back to 2009. The purchase price of KWc by EDF has fallen considerably since. For example, there was a drop of 300% between 2011 and 2017.

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INTEGRATE SOLAR PANELS INTO A MICROGRID STRATEGY

Thinking “profitability of solar panels “when you are a professional is not a good approach. This requires significant investments at the grassroots. Unless you benefit from colossal means, this objective seems complicated to achieve.

However, you can use the electricity produced to lower your overall bill. It can also be stored and used to power a solar heating system, or even an air conditioning circuit. With a coherent microgrid strategy, the photovoltaic panel is used as an auxiliary, which allows to gain in flexibility.

WHAT FINANCIAL AID IS AVAILABLE?

The individuals have at present a 30% tax credit for installing solar panels aérovoltaïques. They are also entitled to a reduced VAT of 5.5% on installation, not to mention an Eco-PTZ (Eco Loan at Zero Rate) for the renovation of housing.

Professionals are not entitled to any national aid. They must therefore fall back on a request for local funding, either through the region or by ADEME (Environment and Energy Management Agency). In 2017, for example, the Auvergne-Rhône-Alpes region launched 3 calls for projects with more than 700,000 € in combined aid.

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