What is the probability that solar water heaters are damaged by hail every year?

Under normal circumstances, hail will not damage solar panels. The standard solar panel has a hail test, and the tempered glass on the front can withstand hail and generally does not break.

The battery panel glass is tempered glass, which has certain resistance and can resist general hail. If the general intensity of hail can't be broken, qualified photovoltaic panels must pass the strength test, and can withstand the impact of hail with a diameter of 25mm (almost the size of pigeon eggs) and a speed of 23m per second. General hail is not so direct and fast.

It is also rare for ordinary glass to break when it hails. The surface of the solar panel is tempered glass with high hardness, which is 4~5 times that of ordinary glass. General, hail does not break.

Other hazards of hail

Light hail can cause crop failure and crop failure, while heavy hail can cause crop failure or serious crop failure. The branches, stems and fruits of crops are damaged by hail, which will reduce production due to damaged leaves, broken stems and threshing.

In a word, after the crop seedling is damaged by hail, the seedlings will be injured and cannot grow normally. If the seedlings are badly damaged, they need to be sown again, which delays the farming season. When crops are attacked by hail at the filling maturity, it will directly affect and hinder the normal filling maturity, resulting in reduced production and quality.

In addition, plastic greenhouses, seedlings and livestock are all affected. Heavy hail caused by strong convection in midsummer is harmful to mature crops, and it will also destroy crops, hurt people or livestock, and even cause death.