Quick Answer
To evaluate the snow resistance of different solar panel brands, research their specific snow load ratings, look for certifications like UL 2703, and consult reviews from other customers who have experienced heavy snowfall.
Understanding Snow Load Ratings
When evaluating the snow resistance of solar panels, it’s essential to consider the manufacturer’s specified snow load rating. This rating is usually measured in pounds per square foot (psf) and represents the maximum weight a panel can withstand before damage or failure. For example, some high-end solar panels have snow load ratings of up to 50 psf, while others may only be rated for 20 psf.
Certified Snow Resistance
Look for solar panels that have been certified by organizations like UL (Underwriters Laboratories) under the UL 2703 standard. This standard tests solar panels for their ability to withstand extreme weather conditions, including heavy snowfall. Panels that meet this standard have demonstrated their ability to withstand snow loads of up to 60 psf.
Real-World Performance
While manufacturer specifications and certifications are important, they don’t always accurately reflect real-world performance. Consult reviews from customers who have installed solar panels in areas prone to heavy snowfall. Look for feedback on how well the panels performed during snow events, and whether they were damaged or lost power. This can give you a more nuanced understanding of a panel’s snow resistance and help you make a more informed purchasing decision.
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