Investing in solar panels is in fashion and for good reason, but the money spent will only be worth it if the photovoltaic installation is in accordance with the needs of the home. We tell you how to get the installed power right.
when we install solar panels In our home, what we want is to save as much as possible. But we are only going to achieve this if the photovoltaic installation is adequate.
In previous articles we have talked about how to get the right inverter and we have also told you what types of solar panels there are so that you can get the right purchase. On this occasion we are going to analyze how to know the installation power suitable for our home. Or, put another way, the number of solar panels that we must install.
How many solar panels does my house need?
If we leave aside the available budget -perhaps we need more panels than we can afford-, the answer to this question will depend mainly on two factors:
- average consumption home energy
- panel model chosen solar
Starting with the second, you should know that not all solar panels are the same or offer the same power, so depending on the model chosen, we will need more or fewer units.
In Lugo between 1 and 3 additional panels will be necessary to achieve the same energy production as in Malaga
For example, Trina Solar’s Tallmax solar panel offers a power of 450W per unit, but typically a conventional monocrystalline solar panel offers between 380 and 420 W of power. In any case, this is something that continues to evolve and technologies that offer much higher figures are already beginning to be approved.
The other determining aspect when calculating the power or number of solar panels that our home will need is its average consumption. In this sense, they have a lot to do with the Features of the house: the size, the number of floors, if the heating or hob is electric, if there is air conditioning, etc.
Based on all this data, the installation company will make a calculation and make a proposal with its corresponding budget. To do this, in addition to asking these basic questions, it will ask us previous electricity bills to more accurately calculate the average consumption.
Number of solar panels depending on the consumption of the house
Although we have already said that the number of panels to install will depend on their power and average consumption, we can establish a general rule that will serve as a guide:
*Usual average consumption of a conventional single-family home.
It will also be necessary to take into account the orientation of the roof of the house or the specific point where the plates will be installed, as well as the geographical location. This is because the number of hours of sunshine directly affects electricity production. If the orientation is not optimal or the house is in a region with little sunlight, more panels will be necessary to reach the estimated production.
The ideal is a southeast or southwest orientation and the inclination of the plates will also condition its efficiency. Therefore, it will be important for the installer to do a quality job and choose the appropriate supports for each case.
As far as geographic situation As a guide, we can say that in Lugo we will need between 1 and 3 additional panels to achieve the same energy production as in Malaga.
How much does a solar installation cost according to the number of solar panels
The answer to this question is also relative, since the price will depend a lot on the material chosen, especially the solar panels and the inverter, as well as the installation company.
But, as a guide, we can determine that:
The prices are indicative, do not rule out an increase in them as a result of inflation.
Remember that currently photovoltaic installations are subsidized and, once the installation has been legalized, you will be able to request aid, which will depend on the installed power and the Autonomous Community in which the home is located.
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