For the professional cleaners
Cleaning solar panel installations is not something you should take lightly. When cleaning the difference between earning or losing money is the rate and quality of cleaning. If you can’t clean your installation fast enough, you will end up losing time and money, because the cleaning takes too long to be profitable. On the other hand, if you clean the installation quickly but do not take care of cleaning it well, you will end up with a still dirty solar installation, and of course it will not produce the same amount of energy as a clean one, meaning you will lose money even in this case.