Short answerRinse panels with plain water and a soft mop every two to three weeks, weekly in dusty summer months, early morning or evening when the glass is cool. Check the inverter app weekly; a sudden drop on a sunny day means it is time to call for service.
Cleaning routine
- Clean before 9 am or after 5 pm. Cold water on hot glass can stress it.
- Rinse to loosen dust, then wipe with a soft sponge mop.
- Do not stand or lean on panels.
- Use plain or RO-reject water if your borewell water is very hard, to avoid spots.
Season by season
- Summer (March–May): highest output but most dust. Clean weekly.
- Monsoon (June–September): rain does some cleaning. Check earthing, cable glands and that water drains away from the inverter.
- Winter: clear skies and cooler panels give excellent output. Trim trees that have grown during the rains.
When to call us
- Inverter shows an error code or is offline
- Output down more than 20% on a clear day
- Visible cracks, burn marks or loose cables
- The structure has started to rust
We service systems installed by us and by others. Book a service visit.
Frequently asked questions
How much output is lost from dusty panels?
Light dust can cut output by 5–8%; thick dust or bird droppings can cause 15–25% loss on affected strings.
Can I use soap?
Use plain water. If needed, a very mild, non-abrasive soap, then rinse well. Never use detergents, scrubbers or pressure washers.