PV cells are small squares, approximately 4 inches wide, which absorb light and convert it into electricity through a chemical reaction. PV cells are arranged in sets (anywhere from 24 to 42 cells) to form modules, and modules in turn are combined to form panels. A series of panels is referred to as an array, and the entire array is securely mounted to the roof or the ground.
It might seem like solar panels are designed to withstand extreme conditions. These panels are fairly durable, but they do have their limits. They may be damaged by direct flame contact, hail or even extreme winds. But remember, even a damaged solar panel can still produce electricity.