How Long Do Solar Panels Last?
You might be asking, “How long can solar panels last?” You are not the only one. Many homeowners are asking the same question. The materials used will determine the life expectancy of your solar panels. This article will tell you how long your panels can last. Learn about the degradation rate of solar panels as well as the impact of soiling or microfractures on their life expectancy. These are some tips to prolong the life of your panels.
Durability of solar panels
When buying solar panels, one of the most frequently asked questions is about their durability. There are some common ways to test the durability of solar panels. For example, one study conducted at the National Renewable Energy Laboratory (NREL) looked at 50,000 solar energy systems installed between 2009 and 2013. It was found that only a very small percentage of PV systems were affected by hail damage, and that less than 1 percent of them had been damaged.
Several factors go into the durability of solar panels. Panels with tempered glass can be purchased for those who live in sunny areas. This type of material will provide adequate protection from extreme weather. However, methacrylate coverings may not be the best choice since they will interfere with the functioning of solar cells and block the access line to the power supply. You can also choose a metal cover. This will give the panels an indestructible appearance. This is not a good idea if your area has harsh climates. But if you live in a place that has harsh climates, metal covering is a good option for your panels.
Degradation rate of solar panels
The degradation rate of solar panel panels plays a role in determining how long it will continue to produce the same amount of power that it did when it was installed. The degradation rate of solar panels varies widely and depends on many factors including the climate and racking system. There are a range of degradation rates, from 0.5% per annum to as high as 1%. SunPower estimates that the degradation rate of solar panels will reach 90% after 20 years.
Solar panels will eventually become less efficient over time. They will produce less energy in the long-term. This natural process will reduce the power output of solar panels over time. Although the rate of degradation will differ depending on the type of panel, most quality solar panels will still generate up to 90% of their initial output efficiency after 20 to 25 years. The performance warranty will include information about the degradation rate.
Solar panels’ lifespan is affected by soiling
Solar panels are susceptible to soil erosion. Even small amounts of dirt and dust can accumulate on panels and scatter light. Different regions have different levels. The amount of wind, exposed dirt, local traffic, and amount of rain can affect soiling values. The soiling value can also be negatively affected by birds that live in the area. Each region has its own soiling loss. For example, soiling losses in central California are between four and five percent. On the other hand, panels in Texas plains see a mere 1% loss.
This dust accumulates on PV panels and reduces the efficiency and power output. The impact of soiling is even greater for mega solar parks, which are located in desert-prone areas. Although most of these parks are located near low soiling risk areas, ultra mega solar parks that are located in areas more prone to dust are more vulnerable. Manual cleaning and self cleaning are both viable options to mitigate soiling.
Impact of microfractures and solar panels’ lifespan
If you have a solar array on your roof or in your yard, you might be wondering how you can extend its life expectancy. Microcracks can occur in solar cells due to many reasons. Firstly, they make the electrical connection between the solar cells difficult and weaken the panel. Cracks can also cause the junction box and PV cell surface to separate, or disfigure.
Incorrect installation is another potential cause of microcracks. Avoid mechanical stress when installing solar panels. This includes resting equipment on them or slamming panels together. Your environment will also help extend the life expectancy of your solar panels. You can find panels that are more resistant against microcracks by researching the climate and environmental factors in your area.