Do you have solar panels? Many people will tell you that "a dirty solar panel reduces yield, which means that your panels can't produce as much energy. You'll have to buy more KiloWatts and won't be able to resell as much to the energy grid".... but your installer assures you that photovoltaic panels don't need to be washed.

So, what to do?

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Try for yourself our easy-to-use calculator. You will soon discover why having clean solar panels is so important.