Energetica India Magazine May - June 2026

A consistently clean solar panel can generate 10–20 percent more energy annually compared to poorly maintained systems, depending on environmental conditions. Over the lifetime of a solar installation, typically 20–25 years, this improvement trans- lates into higher electricity savings and faster payback periods. India’s rooftop solar market is witnessing rapid growth as resi- dential and commercial consumers look for ways to reduce elec- tricity costs and adopt sustainable energy solutions. However, one often overlooked factor affecting solar performance is dust accumulation on solar panels, which can significantly reduce energy generation over time. Studies across Indian solar installations show that dust and pollution can reduce solar panel efficiency by 15-25 percent, depending on the region and weather conditions. In cities with high pollution levels or areas with dry climates, the perfor- mance loss can be even higher if panels are not cleaned reg- ularly. Traditionally, solar panel cleaning requires manual water-based maintenance, which involves periodic labour costs and water consumption. For many homeowners and businesses, especial- ly those with rooftop systems installed at height, maintaining a regular cleaning schedule becomes challenging. As a result, panels may remain dirty for long periods, directly impacting energy generation and return on investment (ROI). This is where self-cleaning solar technology is emerging as a significant innovation in the rooftop solar sector. Self-cleaning systems use automated or intelligent cleaning mechanisms designed to remove dust and debris from solar panels without requiring manual intervention. By ensuring that panels remain clean throughout the year, these systems help maintain optimal energy output and system efficiency. For residential and commercial solar users, the impact on ROI can be substantial. A consistently clean solar panel can gener- ate 10–20 percent more energy annually compared to poorly maintained systems, depending on environmental conditions. Over the lifetime of a solar installation, typically 20–25 years, this improvement translates into higher electricity savings and faster payback periods. Another important benefit is the reduction in maintenance costs. Manual cleaning often requires water usage, specialised equipment, and service visits. Self-cleaning technology mini- mises these recurring costs while also addressing water scarcity concerns in many regions of India. In addition, automated cleaning ensures that solar panels per- form efficiently even during seasons when dust accumulation is high, such as summer months or post-construction periods in urban areas. As rooftop solar adoption grows under government initiatives like PM Surya Ghar: Muft Bijli Yojana, technology innova- tions will play a crucial role in improving system reliability and long-term value for consumers. Solutions that enhance efficien - cy, reduce maintenance requirements, and maximise energy output will be key to ensuring that solar remains an attractive investment for homeowners. Looking ahead, innovations like AI-driven monitoring, auto- mated cleaning systems, and intelligent energy management are expected to further strengthen the economics of rooftop solar installations. By combining clean energy generation with smart technology, the solar industry can deliver greater per- formance, better returns, and a more seamless experience for customers. Self-Cleaning Solar Technology: A Smarter Way to Maximise ROI ROBOTIC CLEANING 46 energetica INDIA- May-June_2026 Radhika Choudary Co-Founder and Director Freyr Energy