Free bill analysis - bring a power bill, get the production math for your actual roof, panel brands like Qcells and REC compared side by side
If the pitch starts at your door and ends with "sign tonight for the special," sleep on it. The sun will still be there tomorrow; so will we.
Before
After
Before
After
Before
AfterFast, Reliable Solar Panel Cleaning Across Commerce
Solar panel cleaning in Commerce typically runs $150-$400 for a residential system and $800-$2,500 for a commercial array, depending on panel count and roof access. Most jobs are done in a single visit, often within 48 hours. Gus’s Solar has been working on Commerce rooftops for years, and we know exactly what this city’s air does to panels. Call us at (877) 550-6892 and a live person answers.
Commerce is not like the cities around it. The warehouses outnumber the houses about ten to one, and every one of those distribution centers puts diesel particulate into the air that lands on panels. That soot film builds up fast. We see production drops here that would take a year to develop in Montebello or Bell. When you call, we send a crew that has already cleaned panels off Bandini Boulevard, on Slauson, and on Washington this month.
Why Gus’s Solar Is Commerce’s Preferred Solar Panel Cleaning Company
Gus Petrakis started this company in 2011, and he still answers his own phone. That matters in Commerce, where most of the solar work is commercial solar installation in Commerce, the buildings are big, and the person deciding who gets on the roof wants to talk to someone who will stand behind the work. We do not hand jobs off to subs. The uniformed techs who show up are Gus’s own crew, background-checked and trained on flat-membrane commercial roofs specifically.
Commerce customers call us for the same reasons people in nearby Maywood and Bell Gardens do: we show up on time, we quote a number and honor it, and we do not ask for a signature tonight. Gus’s standing rule: if a salesman needs an answer tonight, the answer is no. Take two weeks. Think about it. The price will be the same. That applies to cleaning contracts the same way it applies to solar panel maintenance and monitoring or full installs.
Our Solar Panel Cleaning team responds to Commerce usually same-day or next-day for service calls. Every job carries the 90-Day Done Right Promise in writing. If it is not right, one call brings Gus back. We have been doing that in Commerce since we first started running cleaning routes through the industrial district, and the promise has not changed.
Our Solar Panel Cleaning Services in Commerce
Commercial Array Cleaning
This is the core of what we do in Commerce. Flat-membrane rooftops on tilt-up warehouses hold the majority of the city’s solar capacity, and those roofs cannot be cleaned like a residential pitched roof. We use a soft-brush, deionized-water system that will not cut TPO or EPDM membrane. Abrasive brushes leave micro-scratches that turn into leaks, and a roof leak on a 100,000-square-foot warehouse is a much bigger problem than a dirty panel. Typical commercial cleaning in Commerce runs $800-$2,500 depending on panel count, roof access, and soiling level.
Scheduled Cleaning Plans
In Commerce, scheduled cleaning is not an upsell. It is the standard. Panels here collect diesel soot from the I-5 and I-710 freight corridors fast enough that quarterly cleaning is often the minimum needed to keep production where it should be. We set up recurring plans for warehouse operators who want the same crew on a set schedule, with a production report after each visit. You will see the output numbers before and after, so the math is plain. Most Commerce commercial clients are on quarterly or twice-yearly schedules, and the price per visit drops on contract.
Bird & Critter Guard Installation
Pigeons are a real problem on Commerce rooftops. Ballasted racking edges create shaded cavities under the panels, and pigeons move in fast. The droppings are corrosive to aluminum frames, and nesting material blocks airflow, which drives up panel temperature and cuts output. We install critter guard around the racking perimeter that keeps birds out without restricting airflow or voiding your racking warranty. On a flat TPO roof off Bandini Boulevard, we removed pigeon nests from under a 400 kW array and installed guard around the entire ballasted edge. Production came back up within the week.
Debris & Soiling Removal
Commerce’s industrial atmosphere deposits a mix of diesel particulate, brake dust, tire wear, and general freight-corridor grime onto panels. This film does not wash off in the rain. Southern California’s dry season runs long, and what little rain we get just moves the soot around rather than rinsing it clean. Our deionized-water process lifts the film without leaving mineral deposits, which matters on panels that already fight for every percentage point of production.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Commerce
We clean and maintain arrays built with panels from Qcells, REC, and SunPower, and we work on systems with inverters from the major brands, including Commerce solar panel repair when needed. It does not matter who installed your array originally. The panels on Commerce warehouses come from every manufacturer, and our method adapts to the panel surface and the roof membrane underneath. We carry common replacement parts and critter guard hardware locally, so most jobs do not wait on a parts shipment.
Common Solar Panel Cleaning Problems We See in Commerce Homes
- Diesel soot film on flat commercial arrays: Panels on warehouse roofs near the 710 and 5 freeways pick up a brown-black film within weeks. Left alone, that film can cut production by 10-15% in as little as six months. Quarterly cleaning prevents the hot spots that lead to premature string failure.
- Pigeon nesting under ballasted racking: The gap between ballast blocks and panels is exactly the right size for pigeons. Droppings corrode aluminum frames, and nests block the airflow that keeps panels cool. We see this on nearly every Commerce warehouse we visit.
- TPO membrane damage from wrong cleaning tools: A residential-style brush with stiff bristles will scuff TPO membrane. The problem is the scuffs do not show up as leaks immediately; they fail over time, after the roof warranty has quietly been voided. We use soft-brush heads and low-pressure deionized water specifically because the roof membrane is as valuable as the panels.
- Ballast blocks shifted by careless crews: On ballasted racking, the blocks hold the whole system down. A cleaning crew that shoves or walks around the blocks wrong can shift them, changing the load distribution and putting the racking out of engineering spec. Our crew knows how to work around ballast without moving it.
Pricing for Solar Panel Cleaning in Commerce, CA
For residential systems in Commerce or the small number of rental properties with rooftop solar, cleaning runs $150-$400. For commercial arrays, the range is wider: $800-$2,500 based on panel count, roof access, and soiling level. Bird and critter guard installation runs $6-$12 per linear foot depending on the racking type. Scheduled quarterly cleaning contracts on commercial systems typically land at the lower end of the per-visit range because the crew is already set up for the roof. Call (877) 550-6892 for a free estimate. Gus will ask about your roof type, panel count, and where in Commerce you are, then give you a number you can hold him to. No signature wanted tonight.
We Also Serve Cities Near Commerce
Gus’s Solar runs cleaning routes through the entire southeast LA Basin. Our Solar Panel Cleaning in Commerce crew also covers Maywood, Bell, Cudahy, and Bell Gardens. If you are right across the city line, the response time does not change much. Call us and we will tell you when we can be there.
Serving Commerce, CA - Our Local Coverage Area
We’re based in the Commerce area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Solar Panel Cleaning in Commerce
Panels in Commerce soil roughly two to three times faster than residential panels in Montebello or Bell because of the constant diesel particulate from warehouse truck traffic along the I-5 and I-710 corridors. We have documented 12% production loss in under six months on Commerce rooftops. In the residential-dominant cities around us, that same loss usually takes a year or more to develop. Call (877) 550-6892 and we will come assess your array’s specific soiling rate.
Yes. We clean around ballast blocks without moving them. Shifting a ballast block changes the load distribution the structural engineer designed for, and it can void the racking warranty. Our crew is trained specifically on ballasted systems that are common on Commerce’s flat tilt-up warehouse roofs, and we work between and around the blocks rather than over them.
Yes, and the difference is significant. Flat commercial roofs in Commerce create shaded ground-level cavities under ballasted panels that pigeons treat as ready-made nesting sites. Residential pitched roofs have tighter clearances and steeper angles that discourage birds. On Commerce rooftops, we regularly remove nesting material and droppings that have cut output by 5-8% on top of the soiling loss. Critter guard solves it permanently. Call (877) 550-6892 for a quote on guard installation.
The proper method is soft-brush agitation with deionized water at low pressure. Stiff brushes or pressure washers will damage the TPO membrane and void the roof warranty, and abrasive pads leave micro-scratches that eventually leak. We use a soft-brush, deionized-water system designed for membrane roofs, and we dry the panels after cleaning to avoid mineral spotting. This is the same method we used on a 400 kW TPO array off Bandini Boulevard where diesel soot had cut production by 12% in under six months.
Check the per-panel output data if your system has module-level monitoring. Soiling drops all panels roughly evenly, usually 5-15% across the array. A failed microinverter shows one panel at zero or sharply lower output while neighbors run normal. If you do not have monitoring set up, call us at (877) 550-6892. We will clean the array if needed and diagnose whether the production loss is dirt, equipment, or something else. The diagnostic is part of the visit.
Call (877) 550-6892 for a free estimate on solar panel cleaning in Commerce. A live person answers, day or night. Bring us your production data, we will bring you the math.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Commerce since 2011.