How To Clean Solar Panels: A Complete Guide For Rooftop Solar Panel Cleaning In India

By Author: Ulagamani Edadi
Total Articles: 16
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At Blue Bright Energy, we understand the importance of maintaining your solar system. Whether you’re a homeowner or business in Madurai, keeping your on-grid rooftop solar panels clean ensures maximum energy production, savings, and longevity.
Why Solar Panels Require Regular Cleaning
A 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 system can 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 safest, here’s a DIY-friendly method for rooftop solar panel cleaning:
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 solar 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, which can block sunlight.
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.
How Often Should Solar Panels Be Cleaned?
Cleaning frequency depends on the pollution and dust levels in your city:
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
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 Rs. 78,000 under PM Surya Ghar Muft Bijli Yojana for homes, and up to Rs. 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 even 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 Annual Maintenance Contract (AMC) with your solar installer. AMC services ensure:
24/7 system monitoring to spot any technical issues

Breakdown support & on-call services

Deep cleaning using safe, warranty-compliant techniques

Comprehensive inspections for electrical, structural, and mechanical components

If you still prefer DIY, follow the steps outlined above to protect your solar system and maintain its efficiency.
Final Thoughts
Regular solar panel cleaning is essential for maximizing efficiency, maintaining warranties, and extending the lifespan of your solar system. Whether you choose a professional cleaning service or a safe DIY approach, make sure your on-grid rooftop solar panels stay spotless to generate the maximum energy savings.
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!