Soiling quietly drags your production all year long. UFO Systems restores commercial arrays with FAA-certified drone crews — no lifts or staging, zero foot traffic on your roof and zero contact with your modules.
Free estimate · No roof access required · Serving Greater Los Angeles
That's exactly why it costs so much. A soiled array doesn't alarm, doesn't fault and never shows up on a maintenance ticket. It just quietly returns less every month than the model you financed it on — and it does that for years before anyone connects the two.
Dust, pollen, exhaust film and agricultural drift form a haze that scatters light before it ever reaches the cell. The array still runs — it just runs below spec, every daylight hour, until someone washes it. On a typical Los Angeles commercial site that's roughly 3–7% of annual production, and materially more near freeways, farmland or active construction.
Opaque soiling shades individual cells rather than dimming them. Those cells stop producing and start absorbing — a hot spot that can permanently damage the module and, in the worst cases, its backsheet. This is the failure mode that turns a cleaning bill into a replacement bill.
A light rain wets the dust, moves it toward the frame and leaves it there to dry into a band along the bottom edge of every module. In a climate like ours it can leave the array dirtier than it found it — which is why sites that “let the weather handle it” are usually the ones with the most to recover.
Every hand-wash crew brings the same three things onto your roof: body weight on the modules, foot traffic on the membrane, and fall-protection liability you have to host. Our crews never leave the ground.
| Traditional hand-wash crew | UFO Systems drone crew | |
|---|---|---|
| People on your roof | Three to six, all day | Zero |
| Contact with modules | Brushes, poles, body weight | None — non-contact wash |
| Microcrack & walk-damage risk | Present on every pass | Eliminated |
| Roof membrane exposure | Foot traffic, staging, dragged hoses | Untouched |
| Fall-protection liability | Yours to host and coordinate | Ours, at altitude |
| Setup before work starts | Lifts, staging and tie-offs | None — we launch from the ground |
| Disruption to tenants | Roof access, staging, scheduling | Minimal |
We clean the array. We don't walk on it.
We survey your array from the air and quote it — no roof access, no site shutdown, no cost to you.
We build the flight plan and schedule it around your operating hours, tenants and site access rules.
Deionized water, non-contact, no detergents and no residue. The array dries spot-free on its own.
You get before-and-after aerial imagery and a completion record for your O&M file.
Wide, uninterrupted rooftop arrays where a hand crew loses most of the day just getting access.
Cleaned outside trading hours with no lifts, no staging in the lot and no closed parking bays.
Quiet, quick and out of sight of guests — no scaffolding, no crews crossing the property.
Documented, insured work with clean completion records for public-sector reporting requirements.
Awkward spans over live parking, cleaned from above without closing a single row of stalls.
Megawatt sites where throughput is the whole problem — covered row by row, on a repeatable schedule.
We're based in Los Angeles and run commercial routes across Southern California. Recurring multi-site portfolios are our favourite kind of job — one schedule, one point of contact, one report per cycle.
Array outside these counties? We still want to hear about it.
Tell us where the property is and how to reach you. We'll assess the array from the air and come back with a recommended cleaning schedule and what it costs — no roof access needed, no obligation.
Prefer to talk it through? Call 323.607.2427 or email howie@ufosystems.com.
No obligation. No roof access needed for the estimate.
Tell us where the property is and how to reach you. We assess the array from the air — no roof access, no obligation.
