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The panels are designed to withstand Finnish weather conditions and are well suited to the Finnish environment. They are not damaged by rain, snow or hail. Rainfall can help keep the panels clean, e.g. from the leaves of the trees.
In a professionally installed system, the wind will not damage the roof structures or the panel array.

There are various suggestions for cleaning the panel array. However, our recommendation is to leave the panels completely alone. This avoids the risks of personal injury and damage to the system.

The benefits of cleaning panels e.g. from snow is very small compared to the risks.