Solar Panel Cleaner 1 Gallon (Makes 512 G) - Super Concentrated Cleaning Solution for Glass, Metal, Wood & Plastic - Remove Oil, Fingerprint & Water Spots - Multipurpose Solar Panel Cleaning

This is very concentrated cleaner so be careful not to get it in your eyes. Easy to use. Concentration is high so it will clean many panels per bottle. Durability is good. I added a few ounces to a 5 gallon bucket and filled with water. Just the mist coming up from the bucket irritated my eyes because it is so concentrated. I cleaned 24 solar panels with that single bucket. It rinses off quickly. Much better than using dish soap. The increase in power production is noticeable and profitable. The two pictures show the before and after production level of my solar panels. With this product, I don’t have to worry about any sticky residue that dish soap leaves behind, so I should continue to see positive results of the cleaning for many months. I rinse my solar panels six at a time first with the hose, then dunked a bar type cloth soft mop in the bucket and ran the cleaner over the panels and then rinse them. I continued until finished and they rinsed off streak, free, much quicker than dish soap

I use this cleaner on my solar panel array (32 panels). I use a softer brush after spraying this cleaner onto the panels. Following the directions, I still have most of the bottle left. It gets my solar panels clean with no residue left behind. Highly recommend.

Great solution, and strong concentrate. As described. Cleaned solar panels very well and streak free. Worth it.

Bottle arrived with the cap secured with tape. Used the liquid with a spray nozzle though probably not as intended to clean roof-mounted solar panels since I did not want to use a brush at ground-level. The dilution mix was set to the highest concentration. Sprayed the panels with clean water to remove the top residue. Sprayed the dilution mix on the panels and allowed it to sit on the panels for 10 minutes. Re-sprayed as needed to keep the panels wet. Washdown with clean water. Did 3 cleaning cycles. Afterwards, most of the opaque film was removed. The remaining film was expected to be a mix of pollen and dirt since no brush was used. The most apparent change afterwards was the film build-up was much slower. Using a brush is necessary to remove pollen or similar. I also used the cleaner at full strength to remove the haze on the inside of a car windshield. The cleaner did remove the haze much easier with low odor compared to a standard window cleaner. Highly recommend for cleaning panels, so professional cleaning is less frequent, and to clean the inside of car windows/windshield.

Product worked fantastic. I wish I would have taken a before picture. My solar panels were covered in caked on dirt. I had not cleaned them in almost 9 months. I used a deionized water filter for water (the no rinse style of car wash filter system) and twice the recommended amount of cleaner because i found that worked best for me. My process was, rinse the panels, wash with an extension pole and microfiber sponge attachment, rinse again, wash again, followed by a final rinse. This is mostly because of how dirty my panels were. I washed half a panel before I dunked the sponge into the cleaning water to get the dirt out of the sponge. I went through 4x 4ish gallons of water with 2oz of product mixed into each one to do 18x 430 watt panels. I did not squeegee the water off the panels after the final rinse, i just let it air dry. Very happy with this product and will buy again.

We followed the instructions for the "super concentrated". You have to use more than what they recommend on their instructions. The first couple panels came out ok. By the end, only water was coming out. We did everything it said to do, but quantity they recommend is too low. Double or Triple amount they recommended.

I'm so pleased with this product as it checked all the boxes for me. I wash my solar panels from the ground, so I wanted a no-scrub option. The run-off was going to go into my rain gutters, then into my garden so I did not want anything that would kill plants. Ladders are not my friend, so I needed the product to work by sprayer and power wash. I wanted it to rinse clean or leave a thin film to keep the dust off for a while longer. And I wanted the whole process to be as quick as possible as I must access my neighbor's back yard to reach my panels. Check and check. Highly recommend.

I rarely leave reviews, but this stuff works. First off, I am a manufacturing engineering so I have some background in with the best processes used to clean. From a visual perspective, my panels looked a little dusty but nothing you would consider dramatic. Also to note, I have cleaned them before, and we have had decent amount of rain so I was not expecting much of change. That said, this time of year, even after trimming some of the taller birds of paradise so the sun hits earlier in the morning, just now, 3-10-24 @ 2:45 PST, checking, the system was producing ~ 2.1 KW. Peak output in the summer, with the sun directly overhead is 4.2KW. Our bill had gone but we added a guest house, electric car charging, more stay at home work, so I figured that was most of but per below obviously not the only reason. After applying this from a bucket on the rinse setting with a battery operated pressure washer and letting it set, then coming back and rinsing off with the pressure washer changed to the turbo setting since I already had it on the roof, (I normally use a a pole brush with a hose attached), output now up to 3.7KW. Needless to say I was stunned. One thing to note, this product will not remove the pollen we have here in So Cal simply by apply and rinse, you will need to scrub it off but with this it takes very little effort. I have 24 panels and perhaps 3 ounces so ~ 10 cleanings but I could see more if you are starting with cleaner panels.