Solar panel cleaning robot prices aren't usually published online — and there's a reason for that: every site is different, and the robot's cost is not just the machine's sticker price. In this article, drawing on Doka Engineering's 12+ years of field experience, we explain what really drives price and how long the investment takes to pay back.
6 factors that drive the price
The price of professional solar panel cleaning robots like the Doka FK series breaks down into:
1) Brush length and chassis size
FK-1000-V3 is the higher-capacity, easily portable choice for rooftop PV and large solar sites with a 1000 mm brush span and 1230 mm chassis length; FK-600-V2 is the more compact choice for rooftop PV, mid-scale and narrow-access sites with a 600 mm brush and 830 mm chassis. A larger chassis means more material, stronger motors and tighter engineering — and a higher price.
2) Semi-automatic mode and sensor package
The edge-detection optical sensors and semi-automatic cleaning mode on FK-1000-V3 allow unattended operation. This reduces labor cost on large sites but increases the purchase price. FK-600-V2 does not include these features.
3) Battery and charging infrastructure
Both models use a 24 V LiFePO4 18 Ah battery. Spare battery, fast-charger and a dedicated carrying case are optional price line items. For 5+ hours of uninterrupted field work, a spare battery is recommended.
4) Warranty duration and service package
Standard 2-year warranty comes with every robot. Extended warranty (up to 4 years) and operator training packages can shape the final price. The 10-year spare-parts guarantee is included by default.
5) Logistics and commissioning
Logistics from our Eskişehir headquarters to anywhere in Turkey, plus on-site installation, training and test sessions are included. Far destinations (e.g., Şırnak PV sites) may have additional accommodation costs.
6) Accessories and spare parts
Spare brush, fuse set, hose extension and carrying case are optional. For professional use, an annual spare-brush stock is recommended; imported Nylon 6.6 brushes provide approximately 12-18 months of active use.
FK-1000-V3 vs FK-600-V2 price difference
Rather than quoting numbers, it's more meaningful to compare the two models on cost/m²-cleaned. FK-1000-V3 cleans at 1800 m²/h on large sites — preventing 30,000+ MWh of lost production over 5 years. FK-600-V2 has the lowest cost-per-cleaning-unit on rooftop PV with smaller spans.
Rule of thumb: FK-1000-V3 pays back faster on high-area rooftop or ground-mounted PV cleaning. FK-600-V2 can be more economical on tighter, lower-area or access-limited rooftop projects. See our solar panel cleaning robot product page for the detailed comparison.
ROI for a 5 MW PV plant
A worked example for a typical 5 MW ground-mounted PV plant, using Doka field data:
- Installed capacity: 5 MW (about 10,000 panels)
- Annual production: ~8 GWh (high-irradiation regions like Konya / Karaman)
- Average loss from soiling (uncleaned): 12-18%
- Production recovered after robotic cleaning: 10% (8 GWh × 10% = 800 MWh)
- Unit production revenue: at €0.08/kWh → 800,000 kWh × €0.08 = €64,000/year extra revenue
In this example, the robot's cost (without counting manual cleaning labor savings) can pay back in a single season. Including labor savings, the payback period can shrink to under 6 months.
These figures vary widely with regional dust load, annual rainfall and electricity tariff structure. That's why the demo is so valuable: we calculate this for your specific site.
How to request the right quote?
To receive a precise quote, share the following with our field engineer:
- Site province / city / country
- Approximate panel count or installed capacity (MW)
- Site type: ground PV, rooftop PV, carport PV
- Panel tilt (incline angle)
- Is water access available?
- Preferred cleaning frequency (weekly / monthly / seasonal)
With this information, we prepare a tailored quote + ROI projection the same day. Fill out our demo form to get started.
- Panel count or installed power
- Rooftop PV / ground PV / carport PV
- Panel slope, row spacing and access width
- Water access and preferred cleaning frequency
- FK-1000 V3 high capacity or FK-600 V2 compact setup?
For users searching “solar panel washing machine”, we also added a machine-vs-robot intent page; it explains the correct quote path without publishing fake prices.