3 kW Solar System — India's Most Popular Choice
The 3 kW solar system is the sweet spot for most Indian households — it qualifies for the maximum PM Surya Ghar subsidy of ₹78,000 and covers the electricity needs of a typical 2–3 BHK home.
3 kW Solar System Price Breakdown 2026
| Component | Cost |
|---|---|
| Solar Panels (8–10 panels × 330–400W) | ₹65,000–90,000 |
| Solar Inverter (3 kW) | ₹25,000–40,000 |
| Mounting Structure | ₹15,000–20,000 |
| Wiring, DC cables, protection | ₹10,000–15,000 |
| Installation & commissioning | ₹10,000–15,000 |
| Total Cost | ₹1,50,000–1,90,000 |
After PM Surya Ghar Subsidy
| Subsidy Type | Amount |
|---|---|
| Central subsidy (2 kW @ ₹30,000/kW) | ₹60,000 |
| Central subsidy (3rd kW @ ₹18,000) | ₹18,000 |
| Total central subsidy | ₹78,000 |
| Net cost (mid estimate) | ₹92,000 |
Generation & Financial Returns
- Daily generation: 12–15 units
- Monthly generation: 360–450 units
- Monthly savings: ₹2,880–5,400 (at ₹8–12/unit)
- Annual savings: ₹34,560–64,800
- Payback period: 1.5–3 years after subsidy
- 25-year savings: ₹8.5 lakh–16 lakh
3 kW Solar vs Your Monthly Bill
| Current Bill | After 3 kW Solar | Monthly Saving |
|---|---|---|
| ₹2,000 | ₹100–300 | ₹1,700–1,900 |
| ₹3,000 | ₹200–500 | ₹2,500–2,800 |
| ₹4,000 | ₹500–800 | ₹3,200–3,500 |
Roof Space Required
A 3 kW system needs approximately 200–250 sq ft of shadow-free roof space. Most 2–3 BHK homes have adequate roof area.
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