I have an opportunity to get into solar panel cleaning and a much larger capacity. Currently I have a handful of jobs every year where a customer will ask me to clean 10 to 20 solar panels. I have several commercial customers with between 150 and 200 panels that want me to regular maintenance. I also have two solar power installation companies that are asking me to be their solar panel cleaning person. I’ve always cleaned solar panels using traditional window cleaning techniques but now given the opportunity of branching out and such a major way I’m thinking of water fed pole system would be the best way to approach this. I’ve been gathering information on Di and ro systems but I still will need more information on that. I guess what I’m trying to figure out is do you have good cleaning results with solar panels given that they are so much more dirty than a regular window? Also I can only guess that cleaning solar panels would use much more water than cleaning windows. I’m trying to figure more of this out before I move forward with some of these estimates. Thanks for any information that you can offer up. :{)
Wfp gives great results for solar because if the panel is 99% clean it looks great but if a window is 99% you still see the problems.
A boars hair brush get’s the best results, in my opinion, with the least amount of passes.
Running off the 40 gal tank in my van, I’m able to use about 1/2 gal per panel.
Hey! you do, yes! there are also bronze wool attachments and all boars hair brushes if you need even MORE scrubbing. Let me know what other questions you have, or if you are ready to pull the trigger on a system! ~Jersey 862-312-2026
Is it possible to still get good results cleaning solar panels while using straight tap water and needing any RO or DI filtration?
I’m curious if the hard water spotting would even negatively impact their solar absorption and instead just removing the dirt and dust is enough to get them operating as they should?
Mineral deposits after the water dries (those water spots left behind) depend on what minerals you have and how prevalent they are in the water (PPM). Basically, those minerals left on the panel do give some resistance to power generation, equaling less than optimal performance of power generation. The decrease power production is probably very small per panel, but it adds up. Plus, it just doesn’t look as clean and power generation people want to optimize their generation/output as much as possible since it means money.
Hot water helps. Sometimes soap. You could rig up a dispenser.
I didn’t know there was any other way 
personally I have a high flow pump that puts out nearly as much water as a garden hose and I’ll take up my ultralight collapsible hose up on the roof so I have maximum amount of rinse power. So really what end up having is the carbon fiber pole with a brush attached and no tubing so it makes it pretty easy to operate. If you use a helper even more easy.
