Do you know how long a solar panel lasts?

The installation of solar panels is spreading throughout Spain and the world. For reasons of economy, efficiency and ecology, more and more people are thinking about using solar energy to feed part of the energy consumption of their homes.
When making the decision, people think about the sustainability of their investment, and wonder how long the solar panel will remain productive. The truth is that advances in the manufacturing systems and structures of solar panels have extended their useful life. For this reason, it has become a good option for family use.
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How many years can the same solar panel be used?
Most photovoltaic solar panels, which are the most commonly used in homes, are guaranteed to last between 20 and 30 years. After that time the panel will continue to work, but its performance will decrease, that is to say, it will produce less energy.
The deterioration rate of the most current models of solar panels is 0.5%. This implies that after 25 years, the decrease in productivity will be 12.5%. The panel will still produce 67.5% of the energy it generated when it was new.
How can you tell if the solar panel is worn out?
An algorithm created by scientists is used. It is a formula that takes into account humidity, hours of sunshine, available solar energy, atmospheric pressure, temperature, wind speed, among other factors. The algorithm makes it possible to predict what the performance of the panel will be as the days go by.
Through these calculations, it is possible to determine with great certainty when it will be necessary to renew the solar panel to keep the installation in operation.
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Does the solar panel need to be maintained to last longer?
A determining factor for durability is the quality of the panel. The market offers solar panels of different quality and, of course, different prices. But in addition to the quality of origin, the conditions of maintenance and care are key to extend the life of the panel.
Whoever installs a solar panel should not believe that once it is installed and connected, it will be forgotten for 30 years. This is not the case. Panels require maintenance and cleaning.
It is essential to keep the solar panel clean, because the collection of sunlight depends on its cleanliness. Although it is advisable to follow the supplier’s instructions, in general, solar panels are washed with soap and water, using a soft sponge. This hygiene every two or three months will keep the panel in optimal productive conditions. If the area where it is installed is very dusty, more frequent washing will be necessary.
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The solar panel is a convenient option because of its durability and economy in consumption. Just keep in mind that it needs some very simple care that anyone can do.