How to Choose a Solar PV Cleaning Robot? Scenario Adaptation and Analysis of Top Manufacturers

With the large‑scale development of the photovoltaic (PV) industry, the efficiency and cost of power plant operation and maintenance (O&M) have become core factors affecting power generation returns. Traditional manual cleaning is not only time‑consuming and labor‑intensive but also carries safety risks associated with working at heights, and it struggles to adapt to complex scenarios such as mountains and deserts. Solar PV cleaning robots have emerged and are gradually becoming key equipment for PV plant O&M. Different types of cleaning robots address different plant requirements, and leading global manufacturers occupy unique positions in the industry thanks to their respective technological strengths.

There is no single standard form of solar PV cleaning robot on the market. Instead, multiple types have evolved based on locomotion methods, cleaning principles, and actual plant scenarios. Track‑guided robots are the mainstream choice for large‑scale ground‑mounted centralized plants. They run smoothly along preset tracks, achieve precise cleaning paths, and can reach cleaning rates above 99.5%. They are particularly suitable for plants larger than 50 MW, with flat terrain and regularly arranged modules – offering strong wind resistance and high efficiency, meeting the needs of large‑scale O&M. Tracked or self‑propelled robots are more flexible. They require no pre‑installed tracks, rely on tracked chassis and multi‑sensor navigation, and can easily handle complex terrains such as mountains and hills. They are also suitable for distributed rooftop plants, with outstanding obstacle‑crossing capability (e.g., 80 mm spacing, 35 mm height difference).

Hanging or suction‑type robots follow a lightweight design. Using vacuum adhesion technology, they can operate stably on tilted panels, making them especially suitable for rooftop distributed plants and high‑tilt sites. They cause no damage to modules and are easier to deploy. Transporter‑type robots are the “heavy weapon” for ultra‑large ground plants. With large platforms and multiple cleaning modules, a single unit can replace more than 30 workers. They are suitable for 100 MW+ desert or Gobi plants, offering extremely high cleaning efficiency. There are also drone‑collaborative robots – deployed and retrieved by drones – that solve cleaning problems in hard‑to‑reach areas such as rooftops, tidal flats, and rugged mountains, maximally ensuring the safety of O&M personnel.

Among the many solar PV cleaning robot manufacturers, five companies have become industry benchmarks thanks to solid technical expertise and extensive market experience. Each has cultivated its own niche and developed unique competitive advantages – with Skysys’ differentiation being particularly notable.

1. Skysys (Suzhou, China) – The technological pinnacle of PV robots.

Leveraging its inherent R&D advantages in drones, Skysys has carved out a differentiated path in the field of PV cleaning robots. As the only manufacturer whose robots can operate on solar panels with a tilt angle of 30°, its Lantern series features tracked movement and body adhesion design, enabling stable operation on complex terrains such as mountains and slopes – fundamentally solving the cleaning problem for high‑tilt plants. Benefiting from its drone technology heritage, Skysys robots excel in autonomous obstacle avoidance and path planning. Equipped with vision, laser, ultrasonic, and other sensors, they easily handle obstacles of 80 mm spacing and 35 mm height difference, autonomously planning optimal cleaning paths to avoid damaging PV modules. Notably, its cleaning robots can be used together with its own “SolaX” drone inspection system – the SolaX system holds the world’s number‑one market share. This truly achieves an “aerial inspection + ground cleaning” closed‑loop collaborative O&M solution, helping plants increase power generation by 8‑15%, and is widely adaptable to complex sites such as high‑tilt mountains and rooftop distributed plants.

2. Ecoppia (Israel) – The absolute leader in desert PV cleaning.

Ecoppia’s products serve more than 40 countries, with the highest market share in desert areas such as the Middle East and North Africa. Unlike traditional cleaning methods, Ecoppia focuses on water‑free cleaning technology. Using patented brush rolls and an airflow cleaning system, it completely eliminates dependence on water. After cleaning, module transmittance recovery exceeds 98.5%, making it ideal for water‑scarce areas like deserts and Gobi. In addition, Ecoppia robots have extreme environmental adaptability – they operate stably from -30 °C to 70 °C, with outstanding sand and wind resistance and IP68 protection. Coupled with AI‑driven predictive maintenance – real‑time monitoring via cloud platform and early fault warnings – O&M costs can be reduced by more than 40%. This makes Ecoppia the first choice for desert PV plants.

3. Shunhai Technology (Hangzhou, China) – Pioneer of track‑guided PV cleaning technology.

Shunhai Technology holds fully independent intellectual property for its “smart cloud‑based intelligent cleaning robot for PV modules”, having overcome key technical challenges of track‑guided cleaning. Its core advantage lies in smart cloud platform management. Using IoT technology for multi‑robot cluster control, O&M personnel can remotely monitor robot status, analyze data, and diagnose faults – truly achieving intelligent management of plant cleaning. In terms of cleaning efficiency and energy consumption, a single unit can cover 10 MW of PV modules. Its flexible cleaning materials and adaptive pressure control technology cause no micro‑cracks even after 50,000 cleaning cycles, and the robots have passed BV international certification. They are widely suitable for large ground‑mounted centralized plants, rooftop distributed plants, and agricultural PV greenhouses.

4. Luyu Intelligent (Shandong, China) – Full‑product coverage as a core strength.

Luyu Intelligent offers a wide range of PV cleaning robots – hanging, tracked, transporter, etc. – meeting the needs of plants of different scales and scenarios. Its robots feature high‑precision autonomous navigation systems, achieving centimeter‑level positioning through multi‑sensor fusion. They accurately identify obstacles and autonomously plan optimal paths. With a unique gear transmission structure and wide‑temperature adaptation design, they work stably under complex terrain and extreme temperatures. Backed by an extensive service network, Luyu Intelligent’s products serve more than 30 countries, with multiple service centers in China providing rapid local support. They are suitable for large‑scale ground plants, mountain plants, and PV desert control projects.

5. Renjie Intelligent (Hefei, China) – Focused on intelligent PV robots with deep integration of IoT, AI, and big data.

Renjie Intelligent provides standardized, professional cleaning solutions for PV plants. It has a comprehensive product matrix, including dry‑hanging, distributed, and articulated‑arm PV cleaning robots, as well as intelligent shuttle vehicles – adapting to all scenarios: large ground, complex mountains, BIPV roofs, industrial and commercial color‑coated steel roofs, etc. Its flagship product, the “Venus” PR300 dry‑hanging robot, is about 20% lighter than the industry average, effectively reducing module deflection. It can withstand strong winds up to 16 on the Beaufort scale, with emergency shutdown in high winds. The brush bristles are made of UV‑resistant PBT, and after 20,000 cleaning cycles, module degradation is less than 1%.

In fact, the core of choosing a PV cleaning robot is matching the actual needs of the plant:

Large ground‑mounted centralized plants → track‑guided or transporter robots for large‑scale O&M efficiency.

Mountain, high‑tilt plants → Skysys robots, with their 30° tilt adaptability, are the best choice.

Desert, water‑scarce areas → Ecoppia’s water‑free cleaning technology is a perfect fit.

Distributed rooftop plants → Renjie Intelligent’s distributed robots and Skysys’ lightweight products have advantages.

Areas difficult for humans to reach → Skysys’ drone‑collaborative robots effectively solve the problem.

Today, PV cleaning robots are no longer simple cleaning tools; they are deeply integrating with drones, AI, and the IoT, moving toward intelligent, green, and customized development. Skysys, with its drone technology advantage, occupies the high ground in complex scenarios; Ecoppia sets the benchmark in water‑free cleaning; Shunhai Technology, Luyu Intelligent, and Renjie Intelligent each deepen their efforts in their respective niches. Together, they are driving the upgrade of the PV O&M industry and injecting new energy into the global energy transition. As technology continues to iterate and costs keep falling, solar PV cleaning robots will eventually become standard equipment for all PV plants – making the use of clean energy more efficient, economical, and environmentally friendly.