Imagine the solar panel as a mirror, exposed to sun, rain (remembering that contains impurities and is therefore not recommended as a cleaning system), wind, excrement of birds. All these impurities are deposited on the panel, damaging the yield over time. If you do not provide a periodic cleaning of photovoltaic systems, it is possible to reach about 20-25% less of performance. Over the years it could incur therefore to a deterioration of the panel, decreasing its power receptor, whether the maintenance of the photovoltaic panels would not be carried out.
The technique of filtering the water used for washing the photovoltaic panels and windows is the reverse osmosis.
