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Why Rain Doesn’t Clean Your Solar Panels

Most people assume that rain keeps their solar panels clean, but the truth is, it doesn't.

Rainwater is loaded with minerals, dirt, and debris that actually add to buildup on your solar panels, not clean it off. In Utah, where we deal with hard water and high dust levels, rain can leave behind spots, streaks, and sediment that reduce your system’s performance.

Over time, these light layers of dirt and grime cause shading on the panel surface, which directly impacts energy production and efficiency. Even a slight layer of debris can reduce output by up to 20%. This buildup can eventually even corrode the mounting of your solar array.

At Wash Me Solar, we use deionized water and a specialized nylon brush system to safely clean your panels without scratching or damaging them. This method restores your panels to peak performance — especially important heading into the colder months when sun exposure is already lower.

Don't let Utah's hard water rain trick you into thinking your panels are clean.

Want to extend the lifespan and power output of your solar investment?
Schedule your professional solar panel cleaning with Wash Me Solar today!

📞 Call: 801-210-1387
🌐 Visit: washmesolar.com

0:00 - The Truth About Rain and Solar Panels
0:21 - Will rain clean your solar panels?
0:49 - What Hard Water Leaves Behind
1:13 - Hard Water, Tree Sap, Grime Build-Up
2:00 - Why Cleaning Your Solar Panels Matters
2:23 - How Dirty Solar Panels Are Bad and Cause Long-term Degradation
2:34 - What Solar Manufacturers Say About Cleaning Your Panels
3:00 - Solar Panel Cleaning UT
3:20 - Dirty vs Clean Panels
4:16 - Cleaning Solar Panels Makes Your System More Efficient
4:55 - Wash Me Solar
5:04 - Solar Panel Cleaning Process and ASMR
5:58 - Surface Grime Build Up
7:34 - Clean Solar Panels