Solar Panel Cleaning
Service

Yes. Solar panels are designed to absorb sunlight, and anything sitting on the glass — dust, pollen, bird droppings, hard water residue from sprinklers — blocks light and reduces output. Even a light film of dust that you can barely see with the naked eye reduces the amount of energy your panels generate. Over months, grime can also harden onto the surface, making it harder to remove and potentially causing long-term damage to the anti-reflective coating. Regular cleaning keeps your system producing as close to its rated capacity as possible and protects the investment you've already made.

We use a vehicle-mounted purified water system paired with soft-bristle brushes designed specifically for solar panels. The purified water dissolves and rinses away dirt without leaving mineral deposits or streaks — no harsh chemicals, no abrasive pads, no tap water loaded with minerals that dry and leave spots. Most panel manufacturers recommend against using chemicals or unfiltered tap water for exactly these reasons. Our approach is gentle, effective, and designed to stay within manufacturer guidelines.

For most homes in our area, one to two cleanings per year is a solid baseline. That said, your ideal frequency depends on your specific conditions. Properties near active construction, under trees that drop pollen or sap, in areas with heavy dust or wind, or on routes frequented by birds may benefit from more frequent service. We'll always give you an honest recommendation based on what we see on your roof — not a one-size-fits-all schedule.

Not when it's done correctly. The risk comes from improper methods — pressure washers, abrasive scrub pads, harsh chemical cleaners, or unfiltered tap water that leaves mineral deposits. Any of these can damage the glass surface or anti-reflective coating, and some manufacturers specifically warn that improper cleaning may affect warranty coverage. We use only purified water and soft brushes, which aligns with the cleaning guidelines published by major panel manufacturers. If you have specific warranty terms, let us know and we'll follow them to the letter.

Pricing depends on the number of panels, roof pitch and accessibility, and the current condition of the glass. A routine annual maintenance clean on an easy-access single-story roof is priced differently from a steep two-story system that hasn't been cleaned in years. The fastest way to get an accurate price is our online quote tool — most customers have a real number in under two minutes, no phone call needed.

You can try, but there are real tradeoffs. Garden hose water is unfiltered tap water — the same hard water that leaves spots on your shower door will leave mineral deposits on your panels. Using dish soap, Windex, or other household cleaners can leave residue or damage coatings. Scrubbing with the wrong material can scratch the glass. And climbing onto a roof with a hose or bucket introduces serious safety risk. Professional cleaning with purified water and the right tools gives you a better result, avoids the risks, and keeps you on the ground.

In most cases, yes — especially if your panels haven't been cleaned in a while. How much improvement depends on how much buildup was present. Lightly soiled panels may see a modest bump; heavily soiled panels often show a significant jump. One of our customers tracked his 4,800-watt system dropping to around 3,600 watts before cleaning, then climbing back to 4,500-watt peaks afterward. Your results will depend on your system and conditions, but the difference is real and you can track it through your inverter or monitoring app.

Fully licensed and carrying $2 million in general liability insurance. This matters more than most homeowners realize — under California law, if you hire an uninsured contractor and someone is injured on your property or your property is damaged, you as the homeowner can be held financially liable. We carry full coverage so you have zero risk any time our team is on your roof. We're happy to provide a certificate of insurance before you book.