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If you live in an area with atmospheric soil, like metros or a polluted city you must ask for Anti Soiling Coating on top of solar panel glass.
“At Path to Green Homes owned test site (8KW), we have observed that weekly cleaning leads to an immediate 10% increase in an power
Solar panels with good quality Anti Reflectance coating and Anti Soiling modules show better performances
• Anti Soiling modules exhibit better anti-soiling performance than only panels coated with anti reflectance coating.
• Soiling at location is not constant.
• Cleaning process can have a significant impact on the module performances
If will be hard to be sure if the solar panels you are purchasing has a glass surface coated with good quality Anti Soiling Coating.
But using such anti soiling coating will require half water usage for cleaning the panels due to unique “slippery ” property of the glass surface
Specify your installer anti reflective (or soiling) coating formulator as below, with any solar panel brand they supply to you.
| Coating | Panel Brand |
| 3M | As installer to supply panels with anti soiling coating |
🛠️ Solar panel frame design
Apart from anti soiling coating , send below photos to your installer which is the slanting edge side design of your solar panel .
What you see in the photo below is the solar panel along & glass embedded in an aluminium frame , which is tapered to allow for soil to wash off or blow off with wind.
- Rooftop solar installation in India will suffer from dirt and soiling which will accumulate at the edges of the solar panels
- The design above will ensure that the dirt carries away due to wind and when washing and does not get clogged at the edges
- Witthout washing it with water especially at the edges , of the frame will lead to at least 10% loss in generation , thats per week.
⚠️ Anti Soiling coating cannot be put once solar panels are installed
This picture shows how anti soiling coating is being dried when put on blank glass.
The anti-reflective coating is applied at the front of solar glass before glass tempering at glass manufacturing stage. It happens at a high temperature which is why coating cannot be applied later at your home. It will not stick to the glass properly. Good quality anti-reflective coating can contribute 3% to a 600Wp panel wattage which is 18Wp or $ 2000 gain over lifetime for a standard size home installation. When combined with a good anti soiling coating , it will contribute to additional $ 2000 over lifetime