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Solar panels or photovoltaic panels usually enjoy a lifespan of around 25 years. In practice, solar panels can continue working well past that end-of-life date.
Like any sort of mechanism, you see a performance decline over time with solar panels. This is called the degradation rate. On average, solar panels lose a half percent of efficiency each year. So, after 10 years of service, the panels convert light to electricity 5 percent less efficiently. Top-tier panels offer a lower degradation rate, but they come at a higher cost.
You must decide if the long-term savings balance out the higher initial price. The question of how long do solar panels last depends a lot on their maintenance. If you live in a very dusty environment, they might need an occasional wipe with soapy water and a rinse. For instance, a panel subjected to heavy snow loads, winds, and heat does lose its structural integrity and efficiency.
On the contrary, panels installed in a favorable climate will show a minimum rate of degradation. If you want to expand the lifespan of a solar panel, you need to consider some essential aspects. Usually, solar panels are not fragile or prone to defects. However, when connecting them with a solar system and arranging them into arrays, you need to be careful.
In fact, installing solar panels requires you to take into account not only the safety of solar panels but also that of the connected system. Despite being durable, solar panels are still vulnerable to the threats involved during the installation process. For instance, if an installer mistakenly steps on a panel, it may disconnect the built-in circuit.
Although manufacturers use tempered glass for extra protection, the solar panels are unable to withstand continuous stress. This may lead to micro-fractures in the PV cells, which generally serve as a cause to accelerate the rate of degradation.
Soiling is the most common factor, which affects the lifespan of a solar panel. Tiny dirt particles start to accumulate over the surface of a solar panel, reducing the amount of sunlight received by PV cells.
Moreover, these panels are more likely to lose their power due to soiling when installing on the flat surface. Although it is quite easy to install solar panels on flat roofs, this results in the accumulation of more dust over the panels.
Weather also plays its role during degradation of panels, which is some cases turn out to be catastrophic. A windstorm has the potential to damage your solar panel. After breaking from the trees, the branches may fall on the panels and trigger the degradation process. Hence, it is essential to install solar panels at a considerable distance from trees. In addition, birds also pose a threat to the structural integrity of a solar panel. They prefer the dry area below the panel for making their nests.
The capacity of a panel to convert solar light into electric energy is known as Solar Cell Efficiency. Below are a few factors that affect the efficiency of a solar panel.
In order to enhance the efficiency of a solar panel, make sure to install it facing towards the sun. The most recommended mounting position for solar panels is to install them with an inclination angle of 15 degrees South.
Sunlight is crucial for the operation of a solar panel. In fact, the amount of power generated is directly proportional to the amount of sunlight falling over the panel. When buying solar panels , you must consider the average temperature of your region.
Moreover, make sure to position your panels in such a way that there is a sufficient amount of airflow. Solar panels require regular maintenance, which is essential to improve their efficiency and extend their lifespan.
Hence, failure to clean dust and smudges lowers the efficiency of solar panels. Generally, solar panels appear to be extremely durable and come with a good warranty. During their production, each solar panel passes through extensive and rigorous quality tests. These tests ensure that solar panels are capable of withstanding extreme wind, rain, hailing, and other natural phenomena.
In order to increase the lifespan of a solar panel, the first thing to consider is the choice of a qualified installer. Such a service provider must offer solid customer care. Moreover, you must only buy the panels that come with robust warranties. It will allow you to claim a replacement in case any kind of defect appears after a few years of installation.
In addition, by maintaining your solar panel, you can lower the degradation rate. You can tell solar panels are on the decline when they begin to produce less light and electricity.
Normally, solar panels are warrantied for about 25 to 30 years, but they can continue to produce energy at a high capacity after this point.
PV panels at this age typically produce electricity at 80 percent of their initial capacity or less. In many instances, this is sufficient, but for others, the panels may no longer be economically viable and may have to be replaced with newer panels that can produce more energy at higher efficiencies. Monocrystalline solar panels can last 25 to more than 50 years , thanks to the fact that they are made of one crystal, reducing potential failure points.
Polycrystalline solar panels can last up to 25 years , after which the efficiency can drop as electrical forces cause their crystals to separate. Thin-film solar panels last anywhere from 10 to 20 years , but they can pay off faster than their silicon counterparts. Here are some steps you can take to get the best return:.
Solar panels often carry heavy electrical loads, which can cause stress on your panels over time. A solar battery can alleviate some of this while giving you a reserve of energy to draw from when the sun is down.
Bird droppings can cause corrosion, reducing overall solar panel lifespan.
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