How to Clean Solar Panels: A Complete Guide for Rooftop Solar Panel Cleaning in India

Rooftop solar panel cleaning is crucial in India, where dust, dirt, pollution, and bird droppings are everyday challenges. If solar panels are left uncleaned, their efficiency can drop significantly, reducing electricity generation by up to 30% within the first 2 years, according to research. Worse, improper cleaning can even void your solar panel warranty.
At Blue Bright Energy, we understand the importance of proper solar panel maintenance and regular rooftop solar cleaning services in Madurai. Whether you’re a homeowner or a business, keeping your on-grid rooftop solar panels clean ensures maximum energy production, savings, and system longevity.
Why Solar Panels Require Regular Cleaning
A thin layer of dust or debris on your panels prevents sunlight from being absorbed effectively, which directly reduces power generation. This means:
- Reduced solar savings: Dirty panels generate less electricity, which increases your dependency on grid electricity. A well-maintained rooftop solar panel cleaning routine can help cut electricity bills by up to 90%.
- Warranty risks: Cleaning panels incorrectly or too infrequently can void the warranty. Harsh chemicals, abrasive brushes, or high-pressure water should never be used.
Step-by-Step Guide on How to Clean Solar Panels
While professional cleaning is always the safest, here’s a simple DIY solar panel cleaning method for those who prefer doing it themselves:
- Choose the Right Time – Clean panels at dawn or dusk when they are cool to avoid thermal shock and cracks.
- Switch Off the Solar System – Turn off the inverter to prevent any electrical hazards.
- Dry Wipe First – Use a clean, dry nylon cloth to remove loose dust. Avoid rough scrubbing.
- Use Soft Tools – For stubborn dirt or bird droppings, use a long-handle nylon-bristle brush and a non-caustic detergent. Avoid metal or abrasive tools.
- Rinse Carefully – Use RO water or low-mineral water at low pressure to rinse panels. Never use high-pressure water.
- Squeegee Dry – Dry the surface with a soft sponge to prevent water spots that can block sunlight.
This solar panel cleaning guide ensures safety and efficiency while protecting your system warranty
DIY Dos and Don’ts for Solar Panel Cleaning
Dos:
Clean panels early morning or late evening, use soft nylon brushes and low-mineral water, switch off the solar system before cleaning, use mild non-caustic detergents, and always squeegee dry.
Don’ts:
Never clean panels during the daytime when hot, avoid high-pressure water, sprinklers, abrasive tools, harsh chemicals, or walking on the panels.
These simple solar panel cleaning tips can make your system last longer and perform better.
How Often Should Solar Panels Be Cleaned?
Cleaning frequency depends on your area’s dust and pollution levels:
- Dusty or polluted areas: every 15–30 days
- Cleaner areas: quarterly cleaning is usually sufficient
- Post-monsoon or after dust storms: always clean to restore efficiency
Proper solar panel care and maintenance ensures you get the most out of your system.
Why Install On-Grid Rooftop Solar Panels at Home
Installing an on-grid rooftop solar system has multiple advantages in India:
- Government subsidies: Save up to ₹78,000 under PM Surya Ghar Muft Bijli Yojana for homes, and up to ₹90 lakh for housing societies.
- Reduce carbon footprint: A 5 kW system can offset 1,29,360 kg of CO₂ over 25 years.
- Lower electricity bills: Reduce bills by 90% or more — sometimes achieving zero electricity bills.
- Cost-effective: On-grid systems don’t require expensive lithium batteries for storage, unlike off-grid systems.
Professional Solar Cleaning vs. DIY
The easiest and safest way to clean rooftop solar panels is through a professional rooftop solar cleaning service in Madurai or an Annual Maintenance Contract (AMC) with your solar installer. AMC services ensure:
- 24/7 system monitoring to detect any issues
- Breakdown support & on-call services
- Deep cleaning using safe, warranty-compliant methods
- Comprehensive inspections for electrical and mechanical components
If you prefer DIY, follow the solar panel cleaning guide above for safe and effective results.
Final Thoughts
Regular solar panel cleaning in India is essential to maximize efficiency, maintain warranties, and extend the lifespan of your solar system. Whether you hire professional rooftop solar cleaning services in Madurai or follow DIY solar panel cleaning methods, keeping your panels spotless ensures maximum savings and long-term performance.
Ready for Professional Solar Panel Cleaning & Installation in Madurai?
At Blue Bright Energy, we offer expert solar panel installation and solar panel cleaning services for homes and businesses in Madurai and surrounding areas. From consultation to installation and maintenance, we ensure your solar system performs at its peak while saving you money.
Contact Blue Bright Energy today – Your Trusted Solar Partner in Madurai for Commercial and Residential Solar Panel Installation!