Executive summary
The Ahmadnagar-Wanjoli Solar Power Plant in Maharashtra showcases how structured robotic solar panel cleaning can improve operational efficiency, conserve water resources, and support long-term solar asset performance. As solar power plants continue to expand across India's high-irradiance regions, maintaining module cleanliness has become a critical component of maximizing energy generation and protecting investment returns.
Located in one of Maharashtra's important solar generation regions, the Ahmadnagar-Wanjoli project operates as a 7 MW ground-mounted utility-scale solar asset. To address ongoing dust accumulation, cleaning consistency challenges, and water conservation requirements, Taypro deployed a NYUMA semi-automatic waterless cleaning programme under a CAPEX model. The installation includes three NYUMA semi-automatic portable robotic cleaning systems operating through structured weekly block plans, inspection-led execution, and documented completion verification.
The project reports annual savings of approximately 980 thousand litres of water, an estimated generation improvement of approximately 262.5 MWh, and carbon reduction benefits equivalent to roughly 130 metric tons of CO₂ emissions. While site-specific performance should always be validated using local SCADA systems, inverter data, and performance ratio analysis, the project demonstrates how inspection-led robotic cleaning programmes can create measurable operational and environmental benefits without relying on water-intensive cleaning methods.
Unlike conventional washing programmes that depend on periodic tanker-based cleaning, the Ahmadnagar-Wanjoli facility follows a disciplined robotic cleaning strategy based on scheduled coverage, weather-aware operating rules, supervisor accountability, and documented inspection sign-off. The objective is not daily washing of every module but consistent cleanliness management that supports energy production while reducing operational complexity.
Project Overview
Project Name | Ahmadnagar-Wanjoli Solar Power Plant |
Location | Maharashtra, India |
Plant Capacity | 7 MW |
Plant Type | Ground-Mounted Utility Scale Solar Plant |
Cleaning Technology | NYUMA Semi-Automatic Robotic Cleaning System |
Number of Robots | 3 NYUMA Portable Units |
Robots Per MW | Approximately 0.43 |
Cleaning Method | Waterless Semi-Automatic Cleaning |
Procurement Model | CAPEX |
Monitoring Approach | Inspection-Led Weekly Plans |
Annual Water Savings | ~980,000 Litres |
Generation Improvement | ~262.5 MWh |
Carbon Reduction | ~130 Metric Tons CO₂e |
Understanding the Operational Environment at Ahmadnagar-Wanjoli
The Ahmadnagar region experiences a combination of agricultural activity, seasonal dust movement, dry weather conditions, and transportation-related particulate matter that can contribute to solar module soiling throughout the year. Even when soiling is not immediately visible during routine inspections, accumulated dust can gradually reduce solar irradiance reaching photovoltaic cells, affecting plant performance and energy output.
For utility-scale solar facilities, cleaning frequency becomes a strategic operational decision. Cleaning too infrequently can result in generation losses, while excessive manual cleaning may increase costs and water consumption without proportional returns. This challenge becomes particularly important for plants operating in water-sensitive regions where sustainability objectives increasingly influence operational planning.
At Ahmadnagar-Wanjoli, Taypro designed a cleaning programme that balances cleaning effectiveness, operational practicality, workforce accountability, and environmental responsibility. Rather than relying on conventional wet-cleaning methods, the project uses NYUMA semi-automatic waterless cleaning systems supported by weekly block scheduling and inspection-led execution.
The Challenge Before Robotic Cleaning Implementation
Before the adoption of robotic solar cleaning technologies, many utility-scale plants relied heavily on manual cleaning programmes. These programmes often faced recurring challenges including labour availability, inconsistent cleaning schedules, water logistics, rising operational costs, and limited auditability.
For a 7 MW solar facility, coordinating manual cleaning across multiple blocks requires careful planning and significant manpower. Delays caused by labour shortages, weather interruptions, or operational constraints can leave portions of the plant exposed to extended soiling periods. Over time, this can affect inverter performance trends and overall plant productivity.
Water consumption is another significant concern. Traditional wet cleaning methods may require large quantities of water annually, creating logistical challenges and increasing operating expenses. In many regions, water conservation has become an important ESG objective, making waterless cleaning technologies increasingly attractive to solar asset owners.
Taypro's NYUMA deployment was designed specifically to address these operational challenges while supporting long-term plant performance objectives.
NYUMA Semi-Automatic Cleaning Solution
The Ahmadnagar-Wanjoli solar power plant operates with three NYUMA semi-automatic robotic cleaning systems. Unlike fixed automatic robotic fleets, NYUMA portable systems provide flexibility in cleaning deployment while maintaining structured operational discipline through planned block coverage.
Each cleaning cycle is executed according to published weekly cleaning schedules, allowing supervisors to prioritize blocks based on soiling patterns, inverter performance trends, weather forecasts, and operational requirements. This inspection-led methodology ensures that cleaning resources are directed where they provide the greatest operational benefit.
The waterless cleaning approach eliminates routine dependence on tanker-based washing programmes. This not only reduces water consumption but also simplifies cleaning logistics and supports sustainability objectives.
Fleet Design and Operational Strategy
The deployment of three NYUMA portable robotic cleaning units across a 7 MW facility results in a robot density of approximately 0.43 robots per megawatt. While this ratio may appear lower than some highly automated installations, successful robotic cleaning programmes are determined by coverage strategy, scheduling discipline, and operational accountability rather than robot count alone.
The Ahmadnagar-Wanjoli project demonstrates that structured cleaning execution, documented inspection procedures, and planned block prioritization can deliver meaningful results even with a relatively lean robotic fleet. The focus remains on cleaning effectiveness, completion verification, and operational consistency rather than headline equipment numbers.
Weekly block plans ensure that cleaning activities remain organized and measurable. Supervisors review completion status, verify cleaning quality, document operational holds, and maintain records that can be audited by owners, lenders, and technical stakeholders.
Water Savings and Sustainability Impact
One of the most significant outcomes reported by the Ahmadnagar-Wanjoli project is the annual saving of approximately 980 thousand litres of water. For solar facilities operating in regions where water conservation is increasingly important, this represents a meaningful sustainability achievement.
By replacing conventional wet-cleaning practices with waterless robotic cleaning, the project reduces dependency on tanker deliveries, lowers water procurement requirements, and supports broader environmental objectives. These savings also contribute positively to ESG reporting frameworks increasingly used by institutional investors and renewable energy asset owners.
Beyond direct water conservation, reduced vehicle movement associated with water transportation can contribute to lower operational emissions and simplified site logistics.
Conclusion
The Ahmadnagar-Wanjoli Solar Power Plant demonstrates how structured semi-automatic robotic cleaning can support utility-scale solar operations through improved cleaning consistency, water conservation, operational accountability, and performance-focused maintenance practices. With reported annual savings of approximately 980 thousand litres of water, generation benefits of approximately 262.5 MWh, and carbon reduction benefits estimated at 130 metric tons CO₂e, the project highlights the practical value of inspection-led waterless cleaning programmes.
For solar asset owners evaluating robotic cleaning technologies, Ahmadnagar-Wanjoli provides a strong example of how disciplined scheduling, documented inspection processes, and waterless cleaning strategies can help optimize solar plant performance while supporting long-term sustainability goals.
