By area — up to 100 m²: G1 manual water-fed brush; 100–500 m²: single-head G2; 500–6,000 m²: double-head G3 or roller G4; large, high or hard-to-reach rooftops: crawler robots R1A / R1B; large ground-mounted centralized plants: R20 hanging robot with the R20A shuttle.

Short codes are the everyday names: G for pole and handheld brushes, R for robots, A for water treatment and measurement — the number rises with size and capability. Every machine also has a full order code, used on quotations, invoices and shipping documents: G1 = WSE-G01, G2 = WSE-G02, G3 = WSE-G03, G4 = WSE-G04, R1A = WSE-R01A, R1B = WSE-R01B, R20 = WSE-R20, A40 = WSE-A40, A60 = WSE-A60. Quote either form to us — it is the same machine.

Single-head (G2, 32 cm) is best for stubborn dirt, bird droppings and thick dust on smaller sites. Double-head (G3) widens the sweep to 70 cm with two balanced heads for a steadier, faster clean. The roller (G4, 60 cm) is the fastest for routine dust and light soiling, and works dry or wet.

Yes — that is the most common setup. The robot covers large open areas; brushes clean edges, odd shapes and rows the robot can’t reach. Robot + brush = full coverage.

Yes. Alongside the R1A / R1B crawler robots (best for rooftops and mixed sites), the R20 hanging cleaning robot is built for large, ground-mounted centralized plants — an autonomous system that sweeps long rows on schedule, recharges from its own PV panel and is controlled from a cloud platform or phone app.

The G1 water-fed brush (non-powered, 12–36 ft telescopic, with an optional low-power pump) is a light, low-cost tool that needs no electricity.

The crawler robots (R1A / R1B) and the roller machine (G4) clean dry or wet. The rotating brushes (G2 / G3) and the manual G1 are water-fed.

The clearest official benchmark: the R1B double-head robot cleans 1.5–2 MW of PV plant per day, with dual brushes lifting efficiency ~95% over a single brush. For handheld machines, match by site size instead — G2 for 100–500 m² sites, G3 / G4 for 500–6,000 m². Actual speed depends on soiling and layout; tell us your site and we’ll estimate honestly.

Dust, sand, iron filings, pollen and bird droppings. The harder PBT bristles handle dried, stubborn deposits.

The electric brushes and roller use up to 4 L/min at full flow; the crawler robots use at most 1.84 L/min. Actual consumption depends on soiling. For spot-free results, the A40 RO system supplies purified water.

Yes. A A40 reverse-osmosis (RO) unit purifies river, reservoir, rain or ground water for spot-free cleaning, and the A60 optical soiling sensor estimates how much dirt is costing you (per IEC 61724-1) so you clean only when it pays.

Electric brushes and the roller come in mains (AC 100–240 V), lithium (22.2–24 V, cordless) or dual-use versions. The crawler robots run on two 24 V / 26 Ah lithium packs; the R20 recharges itself from an on-board 70 W PV panel.

Single-head 8–10 h · double-head 5–6 h · roller 4–5 h · crawler robot 6–8 h on two packs.

The handheld machines run on the same 22.2–24 V lithium pack family and the robots on 24 V / 26 Ah packs. Tell us your planned fleet and we’ll confirm which packs and chargers can be shared.

Local-standard plugs for your country, and voltage-appropriate versions — just tell us your destination.

Electric brushes and roller: aluminum 3.5 / 5.5 / 7.5 m, custom lengths available. The manual G1 runs from 12 to 36 ft (~3.6–11 m) in aluminum alloy or lighter carbon fiber.

A tap or pump feed via the quick connector — the manual brush ships with a 25–33 m hose. Where there’s no pressurized supply, add the backpack tank with 12 V pump or the 24 V booster pump (6 L/min, 4.1 bar).

Usually yes — send us its pressure, flow rate and hose diameter and we’ll confirm compatibility before you order.

Yes. The wireless remote switches water and power at a distance, so the operator never handles live switching at the panel, and the roller machine is sealed to IP68. The brushes are designed for use on energized arrays.

No — omni-directional edge sensors stop it at panel edges and gaps (it crosses spans up to 20 cm), a red warning light comes on, and you simply drive it back the other way with the remote. No need to climb up.

Yes — OEM/ODM including private branding, custom pole length, power version and brush material for distributors and importers.

Yes. Share your module tilt, layout, voltage, plug type and water source, and we’ll spec the right configuration.

Machines carry a standard warranty with shorter terms on wear parts (brushes, batteries, tracks). Exact terms per model are confirmed in your quotation, so there are no surprises at claim time.

The pure copper brushless motors are rated for a theoretical 20,000+ hours. Machine-level lifespan depends on duty cycle and maintenance — ask us for expectations on your configuration.

Brushes, batteries, chargers and hoses are all available — contact us with your model.

Use the Request a Quote form with your site size, module tilt and location — we reply within 24 hours on business days.

We export worldwide, with deployments across the Middle East, Europe and Southeast Asia. We ship local-standard plugs and voltage-appropriate versions for your market — just tell us your destination.

Yes. As the manufacturer we supply CE, ISO 9001, UN 38.3, MSDS and dangerous-goods transport reports so your lithium-powered machines clear customs and pass inspection — see our Certifications page.

Ask us for reference deployments and field case studies — for example a Romanian rooftop plant that cut cleaning time ~50% with the R1B. Read it in our Insights.