Starting a solar panel cleaning business: equipment, throughput and pricing
Starting a solar panel cleaning business needs 3 things before the first job: a water-fed pole with a rotating brush head, a way to produce low-TDS water, and a throughput figure measured on a real array. Equipment for a one-person operation runs R5,000 to R18,000.
The starting equipment list
| Item | Why it is on the list | Tier |
|---|---|---|
| 8 m water-fed pole | Reaches a double-storey gutter line from the ground | Essential |
| Rotating brush head | Triples throughput against a manual brush | Essential |
| DI filtration vessel | Removes the drying pass on every panel | Essential |
| TDS meter | Tells you when the resin is spent, before a customer sees spots | Essential |
| Hose reel and connectors | Setup time per job falls sharply | Essential |
| Pressure washer under 40 bar | Drives the brush and supplies rinse pressure | Second purchase |
| Squeegee and microfibre | Covers jobs where DI water runs out mid-array | Second purchase |
| Water tank and transfer pump | Frees the job from the customer’s tap | Growth |
| Double-head rotating brush | Opens commercial and plant work | Growth |
The TDS meter is the item new operators skip and regret. Resin exhausts without warning, and the first sign is a customer’s array drying spotted after a paid clean.
Throughput is the number that sets your price
Price per panel cannot be copied from a competitor, because it encodes their throughput and their travel. Measure your own on the first three jobs: panels cleaned, divided by hours on site including setup and pack-up.
A worked example. An operator reaching 25 panels an hour who needs R450 an hour to cover labour, vehicle, water and equipment amortisation has a floor of R18 a panel. Adding the travel to a job 20 km away as a call-out charge rather than folding it into the per-panel rate keeps that floor honest on small arrays. The mechanics of that pricing structure, from the customer’s side, are set out in solar panel cleaning cost.
Why the call-out charge is not optional
A 6-panel residential array takes as long to reach as a 60-panel one. An operator pricing purely per panel loses money on every small job and cannot see it in the monthly figures, because the profitable large jobs hide the loss. Separating travel from cleaning makes each job’s margin visible.
Where the work is
- Residential rooftop. High volume, low value per job, dominated by travel. Route density decides profitability.
- Commercial rooftop. Warehouses, retail centres and schools. Repeat contracts, larger arrays, and the tier at which a rotating brush stops being optional.
- Solar farms. Contract cleaning by cycle, priced per panel at volume, and covered in solar farm panel cleaning.
- Subcontracting to installers. Installers carry maintenance obligations they would rather outsource, and they already hold the customer list.
Route density beats array size for a new operator. Ten adjacent suburban roofs in a morning out-earn one commercial roof across town.
What new operators get wrong
- Buying a pressure washer before a rotating brush, which spends capital on the part that adds least throughput.
- Cleaning with tap water and squeegeeing, which halves the number of jobs completed per day.
- Quoting per panel with no call-out charge, covered above.
- Working on the roof rather than from the ground, which adds fall risk and panel-loading risk for no gain in speed. Ground technique is set out in how to clean solar panels.
- Scheduling customers on a fixed calendar rather than on local soiling rate, set out in how often to clean solar panels.
Questions
Is a solar panel cleaning business profitable in South Africa?
Yes where route density is high enough to keep travel below about a quarter of the working day. Rooftop solar has grown across every metro, so array density in suburban areas now supports repeat routes that did not exist five years ago.
What qualification is needed to clean solar panels?
No electrical qualification is needed to clean the glass, because cleaning touches no DC components. Work at height carries its own legal obligations, which is one more reason to clean from the ground.
How much equipment is needed to start?
R5,000 to R18,000 covers a one-person operation: an 8 m water-fed pole, a rotating brush head, DI filtration, a TDS meter and a hose reel. A double-head system becomes worthwhile when commercial contracts start.