What impact does hail have on solar panel efficiency?

Types of Damage

Hail damage to solar panels can take two primary forms: micro-cracks in the panel’s surface or shattering of the glass. When hail impacts the panel, it can create a micro-crack, allowing water to seep in and corrode the metal components. This can lead to a permanent reduction in energy output. In extreme cases, the hail can shatter the glass, rendering the panel inoperable. The likelihood of shattering increases with the size of the hailstones and the speed at which they hit the panel.

Assessing the Impact

The severity of hail damage to solar panels depends on various factors, including the size and speed of the hailstones, the angle of impact, and the quality of the panel itself. Panels with tempered glass, for example, are more resistant to impact than those with regular glass. In general, hailstones larger than 1 inch in diameter can cause significant damage to solar panels. It’s essential to inspect the panels after a hail storm, looking for signs of damage such as micro-cracks, shattering, or discoloration of the glass.

Prevention and Recovery

While it’s impossible to completely prevent hail damage, choosing high-quality solar panels with tempered glass can minimize the risk. Additionally, regular maintenance, such as cleaning and inspecting the panels, can help identify potential issues before they become major problems. In cases where hail damage has occurred, it’s crucial to address the issue promptly to prevent further damage. This may involve replacing damaged panels or having them repaired by a qualified professional.