What happens to the solar panels when it is cloudy or raining?
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Hello everyone. I am very interested in this question. Some people think that the panels become completely powerless when the sun is covered by a small cloud. How true is this?
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In reality, this is not the case. While clouds do block some of the solar radiation visible to the eye, other types of radiation can still pass through and successfully reach the panels. Read about this on https://a1solarstore.com/blog/how-solar-panels-work-quick-guide-with-stages-and-schemes.html and see for yourself. In practice, bad weather reduces PV performance by no more than 40%. The impact of clouds has been reduced further in recent years with the introduction of modern technology. Some panels are designed to be particularly resistant to bad weather, such as the Canadian Solar PV modules.
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Harsh weather and even natural disasters usually pose no threat to solar panels. The solar cells are protected by a layer of tempered glass, and the aluminium frame is also quite robust. The panels are made so strong that they can withstand wind speeds of at least 140 mph. What you really don't want for your system is shading. Even a small shadow on the corner of one panel can theoretically reduce the power of the whole chain by more than half .
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It's a common misconception that solar panels stop working entirely when it's cloudy or raining. While they do generate less electricity during overcast or rainy conditions compared to sunny days, they can still produce power. Plus, with advanced technologies like the ECOFLOW 220W portable bifacial solar panel, which captures sunlight from both sides, you can still get some energy even on cloudy days. So, while output might dip a bit, your solar setup can still contribute to your energy needs, rain or shine.