Short answer: full-auto robots live on the array and clean on a schedule with no staff; semi-auto robots are portable and remote-controlled by an O&M crew; trackless robots use RTK navigation to service many rows across large low-tilt ground plants. Choose full-auto for hands-off cleaning of fixed rows, semi-auto for flexibility and lower cost, and trackless for large ground sites where one robot serves many rows.
The three types
| Type | How it works | Best for |
|---|---|---|
| Full-auto | Lives on the array, self-powered, cleans on schedule | Hands-off, 24/7 fixed rows |
| Semi-auto | Portable, remote-controlled by a crew | Flexible, multi-site, lower cost |
| Trackless (RTK) | Mobile, cm-precision navigation across rows | Large low-tilt ground plants |
Full-auto (array-resident)
Sits permanently on a row with onboard PV and battery, cleaning automatically on a set schedule — usually waterless, day or night, with no staff. Best where you want cleaning to just happen on fixed arrays.
Semi-auto (remote-controlled)
A portable unit one person carries and operates by remote or app. It's flexible — move it between arrays and sites — and lower cost, but needs a crew present. Good for varied or smaller sites.
Trackless (RTK-guided)
A mobile robot that navigates ground plants to centimetre precision with RTK, servicing multiple rows from one machine. Best for large, low-tilt ground arrays where buying a robot per row isn't practical.
How to choose
1. Fixed rows, hands-off? → full-auto. 2. Flexibility and budget, crew available? → semi-auto. 3. Large low-tilt ground plant, many rows? → trackless.
COTECH Solar offers all three — full-auto, semi-auto and RTK trackless cleaning robots with waterless options and cloud fleet management. See Cleaning Robots or ask which fits.
FAQ
What's the difference between full-auto and semi-auto cleaning robots?
A full-auto robot lives on the array, is self-powered, and cleans automatically on a schedule with no staff. A semi-auto robot is portable and remote-controlled by an operator, offering flexibility and lower cost but needing a crew present. Full-auto suits fixed hands-off cleaning; semi-auto suits varied or smaller sites.
What is a trackless solar cleaning robot?
A trackless robot is a mobile cleaning machine that navigates a ground-mount plant using RTK positioning to centimetre precision, servicing many rows from a single unit. It suits large, low-tilt ground arrays where installing a dedicated robot on each row would be impractical.
Which cleaning robot is best for a large ground-mount plant?
For large, low-tilt ground plants, a trackless RTK robot is usually the most practical, because one machine can clean many rows. Full-auto robots suit fixed arrays where hands-off, per-row cleaning is wanted; the best choice depends on plant layout and O&M preferences.