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How many solar panels are needed for your house?

Los paneles solares pueden ayudar a ahorrar dinero, dimensionando correctamente

Would you like to install solar panels for your home? Surely you would! Solar energy is an inexhaustible and renewable source of energy that also means significant savings on your electricity bill. If you are thinking of installing self-consumption solar panels for your home, surely you have wondered how many solar panels are necessary for a house. Well, from Univergy Solar, a company with more than 20 years of experience in the sector, we solve this and other doubts.

Although with the tips we are going to give you below, you can make an estimate of the amount of solar panels you will need. The best thing to do is to have a professional do the final calculation, as he will know better than anyone else how to take into account all the aspects, such as consumption, orientation, shadows, etc.

How to calculate how many solar panels I need?

There are a series of criteria to calculate the solar panels needed for a house. Among them, we find the following:

1- The energy consumption of your home. This is the first factor that you should consult and the most important to know how many solar panels for your home will need our installation. Look at the kW/h you usually consume and then, if possible, look only at those times when there is no solar energy available, i.e. during the night.
2- The orientation of the roof. Undoubtedly, this is another key aspect when it comes to knowing how many self-consumption solar panels will be necessary in a home. The more space facing south, south-east or south-west, the more sunlight the solar panels will receive and the more energy they will produce.
3- The surface area available for the installation. There is no point in calculating the exact number of solar panels if there is not enough space. Although there is not usually this type of problem with the space, it is necessary to take into account the shadows, since they limit the power.
4- The consumption profile refers to the type of consumption that the installation will make. That is to say, the best performance of solar panels for houses is obtained during sunlight hours.
5- Contracted rates. Another aspect that you may not have taken into account is the electricity tariff with the electric company. Once you have your solar panels installed, choose the one with hourly discrimination, that is to say, in which the night schedule is more economical.

Information about the installation of solar panels for your home

After learning how to calculate how many solar panels I need, you may wonder what other information you should consider before installing solar panels. Take a look at these facts to help you get your installation right:

  • Orientation and tilt can influence the productivity of solar panels for self-consumption. It is a question of finding a balance between functionality and aesthetics, since sometimes it does not compensate for gaining 2% of production. The most advisable would be to place them as far south as possible and with an inclination of around 35º.
  • The most suitable technology to achieve maximum performance is monocrystalline.
  • The total power is calculated by multiplying the number of solar panels by their power.


Undoubtedly, one of the best decisions is to bet on solar panels for home to take care of the environment by taking advantage of natural resources. If you have any questions about solar panels, do not hesitate to contact the professionals of Univergy Solar, specialists in solar and wind energy.

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