How to clean solar panels with water. What precuations are needed? What should be water pressure to clean solar modules?

While cleaning solar modules with water first thing you should do is to use soft bristle cleaner or dedicated solar panel cleaning brushes. You need to also ensure that you do not use excessive water pressure. Excess water pressure can damage your solar panels leading to the development of microcracks. The maximum pressure that can be used for solar panel cleaning is 35 bars. You should also try to use soft water for cleaning solar modules.