Hail-resistant solar panels— do they really exist?

What Are Hail-Resistant Solar Panels?

Hail-resistant solar panels, also known as hail-proof or hail-hardened solar panels, are designed to withstand impacts from hailstones of a certain size and velocity. These panels typically have a thicker, more robust frame and a reinforced glass surface that can absorb and distribute the impact of a hailstone without shattering. For example, the Canadian Solar CS6K-HA panel features a 40mm thick frame and tempered glass that can withstand hailstones up to 25mm in diameter traveling at speeds of up to 24.45 m/s.

Hail Resistance Testing and Certification

To ensure the reliability and effectiveness of hail-resistant solar panels, manufacturers typically conduct rigorous testing and certification processes. For instance, the International Electrotechnical Commission (IEC) has developed a standard for testing the hail resistance of photovoltaic modules (IEC 61215:2020). Manufacturers may also conduct additional testing to demonstrate the performance of their hail-resistant panels under specific conditions. Look for certifications from reputable organizations such as IEC or UL (Underwriters Laboratories) when selecting hail-resistant solar panels.

Choosing the Right Hail-Resistant Solar Panels

When selecting hail-resistant solar panels, consider factors such as the panel’s power output, efficiency, and warranty period. Also, ensure that the manufacturer has conducted thorough testing and obtained relevant certifications. It’s essential to note that hail-resistant solar panels may be more expensive than standard panels, but they can provide peace of mind and added protection for your investment. Always consult with a qualified solar professional to determine the best hail-resistant solar panels for your specific needs and location.