Lifespan of photovoltaic panels - how much is it and how to extend it?
How long will photovoltaic panels produce energy from the sun? This is a question that almost everyone who is thinking of investing in photovoltaics asks themselves. The good news is that PV modules have a long lifespan. Why is the lifetime of PV panels so important? Durability affects the efficiency of the photovoltaic system and the payback time of the investment. Photovoltaic panels are a revolution in electricity generation, but how do you ensure their long-term performance? Here are the secrets to extending the life of PV panels and how to make the most of the sun's energy.
How much can photovoltaic panels run?
Photovoltaic panels are designed to last a long time. By default, most manufacturers offer a 25-year performance guarantee for their panels, meaning that the panels should maintain at least 80-90% of their initial performance for this period. However, many PV panels are capable of operating much longer, even for 30-40 years or more.
The oldest grid-connected photovoltaic system in Europe has been in operation since 1982 in Switzerland. What was their performance like after 41 years of operation?
The project is known as Ticino Solare 10 and has been located on the roof of the SUPSI University near the Swiss city of Lugano. The installation is made up of as many as 288 photovoltaic panels, which together provide a capacity of 10 kW.
A photovoltaic plant with forty years of history shows impressive results in its operation. The technology confirms the success and economy of solar power plants. At the same time, it sets a high bar for improved solutions.
What affects the lifespan of the panels?
Several factors influence the performance of the panels.
1) Atmospheric phenomena - PV panels are exposed to a variety of weather conditions, such as intense sun, precipitation, snow, frost, hail or wind. Extreme conditions can affect the durability of the panels. However, photovoltaic panels are designed and tested to withstand climatic conditions such as hailstorms. We are talking about truly extreme conditions, however, as robust panels can withstand harsh weather conditions in both winter and summer.
2) Quality of materials - PV panels made from high quality materials tend to have a longer lifespan. Choosing high quality materials is crucial to ensure the longevity and long-term performance of the panels. Therefore, it is important to choose reputable manufacturers and suppliers.
3) Regular maintenance - PV panels are subject to the accumulation of dust, dirt, leaves and other debris. Dirt can reduce light transmission which adversely affects the performance of the panels. Regular cleaning of the panels helps to avoid this problem. Periodic inspection of the panels can also help detect potential damage, such as scratches, cracks or other mechanical problems. Corrective action taken in time can prevent deterioration of the panels and extend their life. Regular monitoring of the performance of PV panels can detect drops in performance at an early stage. If the performance of the panels is declining, corrective action can be taken or maintenance can be invested in to restore full performance.
Guarantee for photovoltaic modules
Most manufacturers offer a guarantee on the performance of photovoltaic panels. The standard warranty period is usually 25 years, but some manufacturers offer even longer periods. The performance guarantee ensures that the panels will maintain a specified minimum performance for that period. If the efficiency falls below the specified value, the manufacturer undertakes to repair or replace the panels.
How to effectively take care of the lifetime of photovoltaic panels?
In order to prolong the life of a photovoltaic installation, it is worth remembering to carry out regular monitoring and periodic inspections. Checking the condition of the installation allows you to detect possible problems at an early stage.
It is also a good idea to regularly monitor the operation of the entire installation via inverter indications and a dedicated app. Monitoring systems allow the performance of the panels to be tracked in real time and any problems to be dealt with quickly.
It is also worth cleaning the panels periodically. PV panels get covered in dust, leaves and other debris. Cleaning them regularly with a soft brush and water will maintain performance.
Summary
Photovoltaic panels are not only an investment in renewable energy, but also an investment in the future. With proper maintenance, monitoring and protection, you can extend their life and enjoy the benefits of solar energy for years to come. Photovoltaic panels are the key to achieving energy independence and reducing CO2 emissions, and their longevity depends largely on our care and attention. May the sun's energy be with us for many generations! The energy of the sun is at your fingertips, you just have to take care of it!
