Never use an abrasive material to clean your solar panels. Doing so could cause them to become scratched and less useful than they were when they were installed. Your best bet is to have a gentle cleanser and cloth on hand to clean your panels so that you know that you have what you need when the time comes.
I explain how much this system cost and I go over the site plan and electrical diagram in this link https://youtube.com/watch?v=TFwdY0wiBGA Keep in mind …
Make sure that you get on the roof to look at your solar panels at least once each month. You want to check and verify that they are still clean. If they are not, they are not producing as much energy as they could. Clean them if needed and watch your energy bills drop or even disappear.
When planning your panels, take into consideration the shadows that nearby trees may pass over the area. Solar panels usually need to be mounted high on the roof, in a location that is exposed to the sun for the longest period of time. However, what seems like a great spot may be covered in shade for a certain period of the day.