Manufacturers are now offering solar kits that are supposed to be easy to install. Before investing in this type of material, it is important to carry out a consumption evaluation in order to know if the panels will be sufficient and profitable.
Ready-to-use solar panel kits: what is it?
Solar energy is renewable and free. Many households are considering installing solar panels to benefit from these significant advantages. The solar kits offered by the manufacturers seem to be an excellent solution, but what is it really?
It should be noted that the ready-to-use solar panel kits are composed of the following elements:
- One or more solar panels;
- One or more batteries;
- A converter;
- A circuit breaker;
- A pre-wired box;
- Cables ;
- A counter.
In short, the kits come with everything needed to turn solar energy into usable energy to power the home. The installation of the solar kits can be done between 1h and 2h depending on the case.
Is it profitable to install solar panels at home?
The choice to install solar panels at home is often based on a desire to save money. It is therefore legitimate to ask whether they are profitable. It should be noted that the profitability of a solar kit varies according to many parameters: sunshine in your area, the Powerful installation or your use. For it to be profitable, it is important to properly calculate your energy needs and choose a kit that meets them. In addition, it is possible to obtain additional income by reselling the surplus electricity to EDF.
What solar panel surface to be autonomous?
To know the surface of solar panels necessary for the autonomy of the home, it is necessary to look at its consumption profile. For a 100m² house with standard electrical equipment (oven, washing machine, dryer, dishwasher, etc.), it takes approximately 3kWp of solar panels. This represents approximately 10 solar panels installed on 20m² of roof. However, it should be remembered that the number of modules varies according to the nominal power of the photovoltaic panel chosen.
The best way to know your needs is to check your previous electricity bills. Then check your annual consumption to calculate the number of solar panels needed to become self-sufficient. In addition, other elements must be taken into account: the level of sunshine in the region, the location of the accommodation, the inclination of the roof, the surrounding trees… Note that a 1 kWp installation is capable of producing about 1300 kWh/year in the South, but only 900 kWh in the North.
What solar panel power for self-consumption?
To know the power of the suitable solar panels, it is important to evaluate your annual consumption in kWh. If you consume about 12,000 kWh per year, an installation of about 12 kWp will be necessary. This represents approximately 40 solar panels of 300 Wc power each.
To find the number of panels, divide your annual electricity consumption by the conversion factor, i.e. 0.85. If you consume 3,200 kWh of electricity per year, the calculation will be as follows, 3,200/0.85= 3,764 Wp (Watt-peak). The power of a standard solar panel is about 260 Wp, so you will need 15 solar panels.
How to calculate your need for self-consumption?
The self-consumption rate corresponds to the amount of electricity consumed directly on the energy produced by the solar panels. The calculation of the consumption rate is done according to the following calculation: (energy consumed directly/total energy produced) x 100.
The installation is optimized if you use almost all of the energy produced.