A solar panel cleaning machine is a telescopic pole with a motorised rotating brush and a pure-water feed, cleaning panels from the ground or roof edge. Machines run on lithium battery, mains power or both, reach 3.5 m to 7.5 m, and cost R20,057–R24,790 in South Africa — priced for installers, O&M teams and farms, not once-a-year home cleans.
How rotating brush machines work
The motor spins a cylindrical soft-bristle brush at the pole head while purified water feeds through the centre. Rotation does the scrubbing a manual brush does with arm effort, and the constant water flow flushes the loosened film immediately. One operator covers rows of panels at walking pace without pressing on the glass.
Battery, mains or dual power
| Version | Runs on | Suits | Price band |
|---|---|---|---|
| Lithium battery | onboard pack, cable-free | rooftops and sites without power | R23,088–R23,602 |
| Mains (AC/DC) | plug and converter | fixed sites, unlimited runtime | R20,057–R20,553 |
| Dual power | both | mixed contract work | R24,098–R24,790 |
Length choices are 3.5 m, 5.5 m and 7.5 m across all three power versions. Match length to your highest regular array, not your highest possible job.
Why the water side is half the machine
Panels punish shortcuts harder than windows: mineral film scatters light and costs yield every day it stays on the glass. The machines run the same sub-10 ppm purity rule as window work — the reasons are in what water to use for cleaning solar panels. Never substitute a high-pressure washer; pressure risks micro-cracks and cell damage that brush machines are specifically designed to avoid.
When a machine pays for itself
At typical service rates, a residential array cleans for a few hundred rand a visit — a machine never pays back for one house. The economics flip with volume: installers bundling first-year cleaning, O&M teams on commercial roofs, and farms where soiling compounds across hundreds of panels. The per-clean cost maths is worked in solar panel cleaning prices in South Africa, and cleaning frequency in how often to clean solar panels.
The current range
All twelve machine configurations — 3.5/5.5/7.5 m × battery/mains/dual — are under solar panel cleaning machines. Manual technique for smaller arrays is covered in how to clean solar panels.