Yes, solar panels can be damaged by hail. However, the extent of the damage depends on several factors, including the size of the hailstones, the speed at which they fall, and the quality of the solar panels.

Modern solar panels are generally designed and tested to withstand various weather conditions, including hail. Many manufacturers conduct impact tests to ensure their panels resist hard objects like hailstones. Panels that meet international standards should be able to withstand hail of a certain size and speed.

Smaller hailstones will typically cause less damage than larger ones, and the angle at which the hail strikes can also have an impact. However, hard, sudden hail storms can damage even well-designed solar panels.

If there is suspicion of damage after a hail storm, it is important to conduct a professional inspection. Any damage to the panels can affect their performance. Many insurance policies cover damage to solar panels from hail, but it is important to check this and take prompt action if any issues are identified.

All in all, modern solar panels are robust and can withstand most hail storms, but it is always wise to be cautious and have any damage inspected by a professional.