If you are thinking of installing solar panels in your home, you should know that you will save up to 75% on your electricity bill. Additionally, photovoltaic installations can be set up quickly and easily.
It is however natural for you to be unsure of the number of panels required to enjoy clean and sustainable energy.
Depending on the features of your home, Energy Nordic can assist you in determining how many solar panels you require.
How to determine how many solar panels I need for a house?
To find out how many panels your home needs, we must take into account various factors that will determine the amount of sunlight that can reach your location.
Below is a list of each of these factors:
Quality and performance of photovoltaic panels
The quality of the panels is critical to their performance in producing energy. Higher quality systems cost a little more. However, they make better use of sunlight and are able to produce more electricity.
The higher the quality of the solar panels, the less you need to install on your roof. As it is an investment, the good performance of the solar panels will pay for the installation more quickly.
Type of solar panel according to cell type
The technology used to manufacture the cells of a photovoltaic panel will have a direct influence on its performance. Depending on the technology used, three types of solar panels can be distinguished:
- Monocrystalline: black in colour and with rounded corners. They are mainly used to produce solar energy in homes and are perfectly adapted to the Spanish climate, as they are capable of generating energy with minimal amounts of sunlight. Their cost is high due to their complex manufacturing process, but they retain 80% of their efficiency 25 years after installation.
- Polycrystalline: they have a lower efficiency than the previous ones, which implies a lower production cost and a cheaper price. They also retain 80% of their efficiency 25 years after installation.
- Amorphous: they are the cheapest but the useful life of this type of solar panel is shorter than that of crystalline panels.
What is the size of the main fuse of the property?
When we are talking about larger properties, such as a block of flats or businesses, it is important to consider the size of the property’s central fuse, i.e. how much your grid can produce.
If you would like more solar panels than the main fuse allows, you will need to replace the fuse with a larger one.