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Summer · April – June
Solar panels in India produce their peak monthly output in April–May, when the sun is directly overhead and sky is clearest. But if the panels are still dust-loaded from the winter pollution season, that peak generation window is wasted. Cleaning in April captures the full boost; cleaning in June misses two months of premium output.
A 3 kW rooftop system in Delhi that generates 12 units a day when clean drops to 9 units when dust-loaded. That is ~90 units a month, ₹700–₹1,000 in lost credit — significantly more than a single cleaning cost.
Rates are for standard grid-tied residential rooftop systems 2–5 kW. Larger systems and commercial installations are quoted per site.
| Service | Cost 2026 (₹) | Frequency |
|---|---|---|
| Panel cleaning (2–3 kW system) | 800 – 1,500 | Twice a year |
| Panel cleaning (4–5 kW system) | 1,200 – 2,500 | Twice a year |
| Full service (clean + inverter + wiring) | 1,500 – 4,000 | Once a year |
| Inverter fault diagnosis | 500 – 1,500 | When output drops |
| Battery replacement (off-grid) | 8,000 – 25,000 | Every 4–6 years |
| MC4 connector re-crimping | 400 – 900 | When corroded |
| String / earthing test | 600 – 1,200 | Yearly |
A cheap "cleaning only" visit rinses dust off but misses the electrical and mechanical checks that keep the system generating for its 25-year expected life. A ₹1,500–₹4,000 full service catches the failures early.
You do not need to wait for the scheduled service. Watch your inverter app or meter daily; if any of these signs appear, book a visit.
Brand AMCs charge ₹6,000–₹15,000 a year for a residential 3 kW system. A Solve24 solar-trained electrician charges ₹1,500–₹4,000 for the same full service, and you can book two cleanings and one service for under ₹5,000 total. You see the electrician profile and pay directly — no commission cut.
Every electrician on Solve24 lists directly — no platform commission on the job. See real reviews, agree the rate on WhatsApp, and pay them directly.
₹800–₹1,500 for a 2–3 kW system, ₹1,200–₹2,500 for 4–5 kW. Book twice a year — April and October — for maximum output.
Minimum twice a year: April before peak sun months and October after monsoon dust. In high-dust cities like Delhi, Kolkata and Ahmedabad, add a third cleaning in December.
15–25% by peak summer in most Indian cities. Coastal cities lose less (salt keeps panels partly rinsed by dew). Delhi/NCR loses the most because of PM2.5 dust settling.
Only if roof access is safe and you use de-mineralised water plus a soft brush. Never use pressure jet — it can crack the anti-reflective coating. Rooftop safety is the bigger risk; a ₹1,500 service is cheaper than a fall.
Yes. Yearly service catches loose MC4 connectors, hot spots and firmware issues before they cascade. A ₹1,500 preventive service prevents a ₹10,000+ inverter repair.
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