Installing a solar rooftop system is a smart investment that helps reduce electricity bills and promotes clean energy. However, to ensure your solar panels continue to generate maximum power, regular cleaning and maintenance are essential. Many homeowners overlook this simple step, which can lead to reduced efficiency and lower savings.
So, how frequently should you clean your solar panels? And what is the best time of day to do it? Let’s find out.
Why Cleaning Solar Panels Is Important
Solar panels work by absorbing sunlight and converting it into electricity. When dust, dirt, bird droppings, leaves, and pollution settle on the surface, they block sunlight from reaching the solar cells. Even a thin layer of dust can reduce energy generation by 10–20%, while heavy dirt buildup can cause even greater losses.
Regular cleaning ensures:
- Higher electricity generation
- Better return on investment
- Longer lifespan of panels
- Consistent performance throughout the year
Simply put, clean panels produce more power and more savings.
How Frequently Should You Clean Your Solar Panels?
The cleaning frequency depends on environmental conditions, but for most residential rooftops, the following guidelines work well:
✅ Weekly Light Cleaning
Light cleaning once a week helps remove loose dust and prevents buildup, especially in dusty cities or areas near roads and construction sites. This can be done using plain water and a soft cloth or sponge.
✅ Deep Cleaning Once a Month
A more thorough cleaning once a month is recommended to remove stubborn dirt, bird droppings, and grime.
✅ After Special Events
Clean your panels immediately after:
- Dust storms
- Heavy pollution days
- Pollen season
- Long dry spells without rain
Homes in areas with frequent rainfall may need less frequent deep cleaning, but weekly visual inspection is still advised.
Best Time to Clean Solar Panels
The timing of cleaning is just as important as frequency.
✔ Early Morning – Before 8:30 AM
✔ Evening – After 6:30 PM
During these hours, panels are cool, which prevents:
- Rapid water evaporation
- Water stains
- Risk of thermal shock or cracks
Avoid cleaning panels in the afternoon when they are hot, as sudden temperature changes can damage the glass surface.
How to Clean Solar Panels Safely
- Use soft cloth, sponge, or microfiber mop
- Use clean water or mild soap if needed
- Avoid harsh chemicals or abrasive brushes
- Gently wipe without applying heavy pressure
- Rinse thoroughly to remove soap residue
For rooftop systems that are difficult to access, hiring professional solar cleaning services is safer and more effective.
DIY Cleaning vs Professional Cleaning
Homeowners can easily perform weekly light cleaning. However, it is recommended to opt for professional cleaning at least once a year. Professionals also inspect:
- Panel condition
- Mounting structure
- Wiring connections
This ensures your system remains safe and efficient.
Long-Term Benefits of Regular Cleaning
- Increased solar energy generation
- Lower electricity bills
- Improved system efficiency
- Extended panel lifespan
- Better utilization of government subsidy benefits
Regular cleaning is a small effort that delivers big financial and performance rewards.
At Educosmic Solutions Pvt. Ltd., we are committed to promoting clean and renewable energy solutions for a brighter future.
Take advantage of the opportunity to install a Solar Rooftop System at your residence under the PM Surya Ghar Bijli Yojana and avail a government subsidy of up to ₹78,000.
📞 Contact: +91 940-389-1609
🌐 Website: www.solarfusion.in
📧 Email: [email protected]
👤 Director: Mr. Gavish Jaiswal
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Keep your solar panels clean, produce more power, save more money, and enjoy the true benefits of solar energy.