Washes, inspections and data reviews for commercial roofs, priced per kW.
Usually less washing than people expect, and more watching. Low-tilt rows hold dust and droppings, so two washes a year, a quarterly read of the data and one annual inspection suit most flat-roof systems.
Roof access, tie-off points, water and a year of monitoring data, checked before we quote.
Every row photographed, with findings mapped for your installer or electrical contractor.
Pollen and cottonwood rinsed from low-tilt rows at first light, before the roof heats.
Dust, ash and droppings cleared after the dry months.
Clear-day output against expected, inverter by inverter, with a short written review.
Visits, findings and production in one summary for your facilities file.
A single-story warehouse near the Denver Federal Center in Lakewood with a 120 kW ballasted array in low-tilt rows. At $9 per kW, the contract would start from $1,080 a year. The April inspection maps pigeon droppings along two rows beside a rooftop unit, the June and September washes clear them, and each quarterly review compares every inverter’s clear days against the others.
Per kW of installed capacity, from $9 per kW a year, confirmed after a site review. For context, NREL’s 2020 PV O&M cost benchmark put commercial rooftop O&M at $18.55 per kWdc per year, though that total includes management and other items we do not do.
Yes. We wash early in the morning, which suits most businesses because the roof is cool and the parking lot is quiet. We agree access, roof hatch keys, sign-in rules and tie-off points with your facilities team before the first visit.
No. We wash, look and read the data. Electrical testing, inverter service, repairs and warranty claims stay with your installer or electrical O&M contractor, and our reports are written so they can act on what we found without a second site visit.
Yes. Sites near fields, rail lines or heavy traffic sometimes need a third wash in late summer. If a quarterly review shows a slow slide on clear days, we will say so and quote one; if it does not, we will tell you to skip it.
An annual contract, with the wash, inspection and review dates set out at the start. We quote each site separately after the review, and the terms, notice period and invoicing are agreed in writing before the first wash.
Tell us the address and roughly how many panels. We confirm the price from a photo first.