TL;DR
- 3 kW is the sweet spot if your JVVNL bill is ₹2,500-₹4,500/month
- 5 kW wins if your bill is ₹5,500+/month AND you have ≥ 500 sq ft roof
- Both qualify for the same ₹78,000 PM Surya Ghar subsidy (capped at 3 kW)
The numbers (indicative reference rate card)
| Metric | 3 kW | 5 kW |
|---|---|---|
| List price | ₹1,96,000 | ₹3,20,000 |
| PM Surya Ghar subsidy | ₹78,000 | ₹78,000 |
| Net cost | ₹1,18,000 | ₹2,42,000 |
| Monthly generation (Jaipur avg) | 360-450 units | 600-750 units |
| EMI (5-yr, 9% pa) | ₹2,449/mo | ₹5,024/mo |
| Payback period | 4-5 years | 5-6 years |
| 25-year lifetime saving | ₹17-22 L | ₹28-36 L |
Decision matrix
- If you currently pay ₹2,500-₹4,000 → 3 kW (you'll over-generate beyond this size and waste capex)
- If you pay ₹4,000-₹6,000 → 3 kW unless you plan to add an AC / EV (then 5 kW)
- If you pay ₹6,000+ OR plan to electrify (EV, induction, electric water heater) → 5 kW
Roof requirement
- 3 kW needs ~300 sq ft shadow-free roof
- 5 kW needs ~500 sq ft shadow-free roof
- Both are achievable on most independent Jaipur kothi terraces (200-700 sq ft typical)
Book a free site survey on WhatsApp 80580-55990 and our engineer will measure your roof and recommend the exact size.
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