The Impact of Hail on Photovoltaic Modules

The Impact of Hail on Photovoltaic Modules

Many power station owners have doubts, can photovoltaic power stations withstand hail?

As we all know, photovoltaic modules, as power generation equipment, need to work outdoors for a long time, and not only have to undergo continuous tests in various harsh environments.

When extreme weather comes, it must also be able to withstand the impact of various extreme weather, such as hail weather.


What I can tell you clearly is:

Qualified modules produced by regular component factories must pass strict tests such as the maximum static load (wind load, snow load) of 5400pa on the front, the maximum static load (wind load) of 2400pa on the back, and the impact of hailstones with a diameter of 25mm at a speed of 23m/s.

Smaller hail generally does not cause harm to photovoltaic modules, owners and friends can rest assured.

Of course, nothing is absolute. Larger hailstones will also cause damage to the power station, thereby affecting the power generation of the entire power station.

Remember that when choosing power station equipment, you should choose a photovoltaic power station built by a regular brand, and the quality is relatively more guaranteed.

After the demonstration test of the power station: the anti-hail ability of the double-glass module is stronger than that of the ordinary photovoltaic module.

How to prevent hail damage to power stations?

It is understood that hail is a natural disaster risk, which can generally be settled through the insurance of photovoltaic power plants, and the insurance will pay for all costs of replacing equipment and restoring construction.

Previously, an insurance company evaluated the risk factors of photovoltaic power plants, and the hail risk accounted for only 3%.

How to maintain the photovoltaic power station after the hailstorm?

After the hailstorm, the smashed photovoltaic modules may be damaged to some extent. Part of it can be seen with the naked eye, and part of it is the hidden damage hidden inside the component. The professional term is called [hidden crack].


As an installer or owner, after the hail occurs, you must check the photovoltaic power station.

First of all, the comparison also checks the power generation of the power station. If there is a drop in power generation or other abnormal conditions, further inspections can be performed on components that may have problems.

The method of checking the fault location of the photovoltaic module: generally use a thermal imager to find the abnormal heating part of the module, or use a portable EL tester to detect the possibly damaged module, which can quickly find the place where there are [hidden cracks] or damage.

If you still cannot determine whether the components are damaged, you can contact the original factory for inspection, so that the damaged components can be replaced in time.

To sum up: before the construction of the power station, you must choose products from regular channels, and at the same time find a reliable installer for installation. After the hailstorm, it is necessary to check the power generation of the power station to confirm whether it has been damaged.

If the frequency of local hail is high, you can find an insurance company to purchase property insurance for photovoltaic power plants.

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