Executive summary
This project addresses unique soiling challenges at an 8.4 MW solar plant in Bheewandi, Maharashtra. The site experiences uneven soiling patterns. These patterns come from local road grit, agricultural dust, and recurring humidity cycles. Previously, the O&M team struggled with the logistics of night crew scheduling. These tasks often conflicted with essential vegetation and civil maintenance windows. Furthermore, site supervisors lacked reliable, per-block proof of cleaning. This caused inconsistent energy performance across the array.
To resolve these operational gaps, Taypro deployed the NYUMA semi-automatic waterless cleaning system. This project uses a CAPEX procurement model. This implementation allows for structured, site-specific cleaning cycles. The system performs 3–10 dry passes per month depending on environmental conditions. By replacing manual water-based methods with precise, robotic waterless cleaning, the plant achieved notable gains. The installation delivers 8.4 MWh of additional generation annually. It also reduces water consumption and CO2 emissions. This ensures consistent energy yield despite the challenging regional dust environment.
Environment and soiling at Bheewandi
Environmental Challenges and Soiling Profiles at Bheewandi
The 8.4 MW Bheewandi site operates within a complex environmental intersection in Maharashtra. The regional soiling profile involves heavy road-based grit from local transport corridors. It also includes fine particulate matter from nearby agricultural activities. These two distinct dust types interact uniquely with the area's high-humidity cycles. They form a persistent, sticky layer on solar modules that lowers performance.
Environmental moisture accelerates the cementation of dust. This creates uneven, string-level soiling patterns. These patterns are difficult to manage with standard manual cleaning methods. Traditional water-based manual cleaning often resulted in slurry buildup. This buildup, combined with specific dust particles, further masks the panels. By deploying the NYUMA semi-automatic system, the site now targets these conditions. It uses scheduled, waterless cycles that prevent dust accumulation from becoming permanent, moisture-bonded residue. This targeted approach ensures the plant maintains optimal energy output despite fluctuating climate conditions.
O&M before Taypro
Operational Gaps and Labour Constraints at Bheewandi
Before transitioning to robotic technology, the 8.4 MW Bheewandi plant relied on manual cleaning. This created significant logistical bottlenecks. The site struggled to coordinate water logistics and night-crew scheduling. These tasks frequently conflicted with vegetation management and essential civil O&M windows. Because water availability and manual labour were limited, cleaning cycles were often deferred. This led to suboptimal energy generation across the site.
Beyond the logistical strain, the project suffered from a critical lack of visibility. Supervisors possessed no per-block verification to confirm which strings were actually cleaned during each cycle. This audit gap meant that uneven soiling patterns remained unaddressed across large portions of the array. The absence of quantitative cleaning data prevented effective performance tracking. It also left the facility vulnerable to persistent, moisture-bonded soiling that manual methods failed to clear.
Fleet and deployment at 8.4 MW
Fleet and Deployment at 8.4 MW
To address specific soiling challenges at the 8.4 MW Bheewandi site, Taypro implemented a dedicated fleet of NYUMA robotics. The deployment utilizes a CAPEX procurement model. This allows the facility to own the hardware outright. It also integrates advanced cleaning technology into the long-term asset management strategy. Given the site configuration, the system is deployed as a single semi-automatic unit. It is optimized for high-intensity, targeted cleaning operations across the plant.
The NYUMA system provides a critical upgrade over previous manual methods. By utilizing single-pass PBT brush technology, the robot effectively clears agricultural dust and road grit. These particles typically cement due to local humidity cycles. The deployment is structured to support 3–10 dry cleaning cycles per month. We schedule these cycles strategically around ongoing vegetation and civil maintenance activities to ensure no operational downtime.
- Fleet Mix: 1 semi-automatic NYUMA unit.
- Technology: Single-pass PBT brush cleaning designed for utility-scale fixed-tilt arrays.
- Deployment Model: CAPEX procurement.
- Commissioning Focus: Integration of robot scheduling with existing site O&M workflows to ensure verifiable string-level cleaning.
Operations and monitoring
Operations and Monitoring at Bheewandi
Operations at the 8.4 MW Bheewandi site rely on a structured cleaning cadence. This cadence balances high-intensity soiling removal with site-wide accessibility. The semi-automatic NYUMA deployment utilizes a flexible schedule of 3–10 monthly dry cycles. This rhythm allows the O&M team to navigate around vegetation management and civil work windows effectively. By avoiding the rigid requirements of fixed-time washing, the team ensures the fleet operates only when site access is clear and safe.
Accountability is maintained through NECTYR. This system replaces informal reporting with verified, inspection-led data. Supervisors now track every block to confirm cleaning completion. This ensures that humidity-induced soiling patterns are addressed. This data-driven oversight eliminates the ambiguity that previously hampered site maintenance and performance reporting.
- Deployment Schedule: 3–10 monthly dry cycles adjusted for operational constraints.
- Accountability: NECTYR-verified reporting for every string and block.
- Safety: Automated wind holds for stability during extreme Maharashtra weather.
- Efficiency: Targeted scheduling to clear agricultural dust and road grit without daily wash myths.
Results and impact
Results and Impact
The transition to waterless robotic cleaning at the Bheewandi site has effectively resolved operational friction. It fixed the conflict between manual cleaning schedules and competing site maintenance tasks. By integrating the NYUMA system, the project team successfully eliminated persistent uncertainty regarding block-level cleaning quality.
The site now benefits from a consistent, verifiable cleaning rhythm. This rhythm directly combats regional challenges like agricultural dust and road grit. These improvements delivered a notable uplift in annual energy recovery. They also significantly lowered the project's reliance on water. Furthermore, the shift to waterless operation contributes to the plant’s sustainability goals by reducing annual carbon emissions. The team continues to monitor performance gains achieved by this strategic robotic integration through the NECTYR dashboard.
- Generation: Achieved significant additional annual energy recovery of 8.4 MWh per year.
- Sustainability: Conserved 32 thousand litres of water and reduced annual carbon output by 4 metric tons.
