Solar Panel Cleaning

Automated Robotic Solar Panel Cleaning for Industrial and Commercial PV Systems

Hemera Projects provides specialised industrial services focused on quality, safety, environmental responsibility and long-term asset protection. As part of our commitment to advanced maintenance methodologies, we offer automated robotic solar panel cleaning for industrial, mining, agricultural and commercial solar installations.

Solar photovoltaic systems operating in demanding environments are exposed to dust, dirt, residue, bird activity and environmental build-up. Over time, this soiling can reduce panel efficiency, restrict energy output and impact the return on investment of the solar installation.

Our robotic solar panel cleaning solution helps clients maintain consistent PV performance, reduce manual cleaning risks and support safer, more efficient solar asset maintenance.

Why Solar Panel Cleaning Matters

In high-dust environments such as mines, factories, farms, processing plants and remote solar fields, solar panels can lose efficiency when dust and residue accumulate on the panel surface.

When panels are not cleaned consistently, less sunlight reaches the photovoltaic cells. In severe soiling conditions, energy losses of up to 20–40% may occur, depending on site conditions, dust load and cleaning frequency.

For large-scale solar installations, this can result in significant energy loss and reduced financial performance over time.

Automated Cleaning for Demanding Environments

Hemera Projects’ robotic solar panel cleaning systems are designed for sites where manual cleaning may be unsafe, inconsistent, labour-intensive or difficult to manage.

The system operates using programmable cleaning cycles, allowing panels to be cleaned regularly and efficiently with reduced manual intervention. This supports safer maintenance planning, improved cleaning consistency and reduced operational disruption.

Robotic cleaning also helps reduce reliance on labour-intensive cleaning methods, water logistics, work-at-height exposure and repeated site coordination.

Key Benefits

Improved Safety

Automated solar panel cleaning reduces the need for personnel to work at height, move across solar arrays or operate in harsh, dusty and high-temperature environments.

This supports Hemera’s safety-focused approach by limiting manual handling and reducing exposure to potentially hazardous site conditions.

Better Energy Output

Regular robotic cleaning helps remove dust, residue and dirt build-up that can restrict solar performance.

By maintaining cleaner panel surfaces, solar assets can operate closer to their intended output and deliver a stronger return on investment.

Lower Operational Costs

Robotic cleaning reduces long-term reliance on manual labour, equipment handling, water logistics and repeated cleaning coordination.

This can help lower maintenance costs, reduce downtime and improve the overall cost-effectiveness of solar asset management.

Reduced Water Consumption

With water-efficient and waterless cleaning options available, robotic solar cleaning supports more sustainable maintenance practices.

This is especially valuable for remote, industrial and agricultural sites where water use, logistics and environmental responsibility are important considerations.

Robotic Solar Cleaning System Features

Dry and Water-Based Cleaning Options

The robotic cleaning system supports both dry cleaning and water-based washing, making it suitable for different site conditions and levels of dirt accumulation.

A rotating brush system assists with the removal of stubborn dust, residue and build-up from solar panel surfaces.

Programmable Cleaning Cycles

Cleaning can be scheduled according to site-specific requirements, ensuring panels are maintained consistently.

Features include automated cleaning cycles, automatic return to base and automatic charging.

Remote Monitoring and Control

Cleaning progress can be monitored remotely via mobile app or web-based control using WiFi or 4G connectivity.

This allows site teams to oversee cleaning activity without needing to be physically present at the panel array.

Modular and Portable Design

The robotic cleaning unit is lightweight, modular and practical to move between solar rows or sections.

This makes it suitable for industrial rooftops, mining operations, remote solar farms, agricultural PV systems and large-scale commercial installations.

High Cleaning Capacity

The system is capable of cleaning up to 1.2 MWp per day, making it suitable for commercial, industrial and utility-scale solar environments.

Self-Charging Power System

The robot is powered by lithium batteries and driven by 24V DC brushless motors.

Onboard solar panels support self-charging, allowing the unit to operate efficiently in solar environments.

Suitable Applications

Hemera Projects’ automated solar panel cleaning solutions are suitable for:

• Mining solar farms
• Industrial solar installations
• Commercial rooftop PV systems
• Agricultural solar systems
• Remote solar farms
• Utility-scale PV plants
• High-dust environments
• Sites where manual access is difficult or unsafe
• Solar assets requiring regular, consistent cleaning

Reliable Solar Asset Maintenance

Automated robotic solar panel cleaning gives industrial and commercial solar operators a safer, more consistent and more efficient way to protect energy output.

By reducing the limitations of manual cleaning, Hemera Projects helps clients maintain reliable solar performance, reduce operational risk and extend the value of their PV systems over the long term.

Large-scale rooftop and ground-mount industrial solar panel cleaning for commercial and industrial PV arrays is delivered across South Africa using deionised water and dedicated cleaning robot rigs.