Professional Solar Panel Cleaning in Maryland
Dirty solar panels lose 15–25% of their energy output. We restore it.
About This Service
Solar panels are one of the most significant investments a Maryland homeowner can make — and dirty panels don't pay you back the way clean ones do. Research shows that dust, pollen, bird droppings, and environmental debris can reduce solar panel efficiency by 15 to 25 percent. In Maryland, where pollen season is intense and bird activity is constant, panels require regular professional cleaning to maintain peak output.
OneNation Pressure Washing uses pure water and soft brush systems designed specifically for solar panel cleaning — leaving no streaks, residue, or micro-scratches that can degrade panel performance over time. We do not use standard pressure washing on solar panels. Our process is safe for all panel types and warranties, and we can integrate panel cleaning with your roof washing or house washing appointment for maximum convenience.
What’s Included
- ✓Restores Maximum Energy OutputRemoving dirt and biological contamination from panel surfaces can restore 15–25% of lost energy production — paying for the cleaning quickly through recovered output.
- ✓Safe for All Panel TypesWe use pure water and soft brush systems that clean effectively without scratching panel glass or voiding manufacturer warranties.
- ✓Extends Panel LifespanBird droppings contain uric acid that etches panel glass over time. Regular cleaning prevents permanent surface degradation and extends panel life.
- ✓Streamlined with Other ServicesCombine solar panel cleaning with your annual roof washing or house washing for a single appointment that covers your entire exterior.
Our Process
Panel Assessment
We assess panel array size, soiling type (dust, pollen, bird droppings), and access requirements for safe and thorough cleaning.
Safety Protocol
All electrical connections and junction boxes are noted. We use appropriate PPE and access equipment for roof-mounted panels.
Pure Water Wash
Deionized or RO pure water is applied with soft brushes to gently clean panel glass without leaving mineral deposits or streaks.
Streak-Free Rinse
A final pure water rinse ensures completely streak-free, residue-free panels. No spot, no film — maximum light transmission restored.
Plant & Landscape Safe
We pre-wet and protect every plant, shrub, and lawn bordering the work area before we start, and use biodegradable cleaning solutions that rinse clean. If anything in your landscaping is damaged by our work, we make it right at no cost to you.
Our Guarantee
If you’re not satisfied with the solar panel cleaning we did, we come back within 7 days and re-clean the area at no charge — no argument, no fine print.
Frequently Asked Questions
Studies show dirty solar panels lose 15–25% of their energy output on average, with panels in areas with heavy pollen or bird activity seeing even higher losses. Regular cleaning can be a significant factor in your system ROI.
Ready for Professional Solar Panel Cleaning?
Get your free estimate today. We serve Silver Spring, Rockville, Bethesda, Gaithersburg, and all of Montgomery County.