Quick Answer
Yes, you can buy solar panels specifically rated for hail resistance, but not all manufacturers provide hail ratings, and the standards vary.
Choosing Hail-Resistant Solar Panels
When shopping for hail-resistant solar panels, look for those with a high hail impact rating from organizations like the International Electrotechnical Commission (IEC) or the UL 2158 standard. For example, the SunPower X-Series and the Tesla Solar panels have received hail impact ratings.
Understanding Hail Impact Ratings
The hail impact rating is usually measured by dropping a hail ball (usually made of ice or a similar material) from a certain height onto the solar panel. The rating is given based on the size and weight of the hail ball that the panel can withstand without sustaining damage. For instance, the UL 2158 standard requires a solar panel to withstand a hail impact of 1 inch (25.4 mm) in diameter and 0.5 pounds (2.3 kg) in weight dropped from 17 feet (5.2 meters) above.
Factors Affecting Hail Resistance
While a high hail impact rating is crucial, other factors also contribute to a solar panel’s hail resistance. These include the panel’s frame material, the quality of the glass covering, and the design of the panel’s surface. Some manufacturers use reinforced frames, tempered glass, or even specialized coatings to enhance the hail resistance of their panels. By considering these factors and looking for a high hail impact rating, you can choose a solar panel that will withstand harsh weather conditions.
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