If your monthly bill is ₹1,500–₹2,500, the 3 kW rooftop solar plant is almost certainly your best buy. It's Rajasthan's most-installed size — big enough to erase a family's bill, small enough to fit a city roof. Here's the complete 2026 picture.
1. The full cost breakdown
| Item | Indicative Range |
|---|---|
| 3 kW system (5–6 panels + inverter + structure + wiring + installation) | ₹1,65,000 – ₹1,95,000 |
| PM Surya Ghar subsidy (DBT) | − ₹78,000 (maximum) |
| Your effective cost | ₹87,000 – ₹1,17,000 |
GST extra. Hybrid versions (with battery) run ₹2.2–2.8 lakh.
2. Generation & savings
In Rajasthan sunshine, a 3 kW plant makes 12–15 units/day — 360–450 units a month. At ₹8/unit that's ₹2,900–₹3,600 saved every month, or roughly ₹35,000–₹43,000 a year. Most 3 kW owners see their bill drop 90–100%.
3. Space & structure
You need about 250–300 sq. ft. of shadow-free roof — a standard Jaipur terrace handles this easily. We use HDGI structures rated for 150+ km/h winds, with 6-inch clearance for airflow (cooler panels = more output).
4. Payback: under 3 years
| Metric | Value |
|---|---|
| Effective investment | ≈ ₹1,00,000 |
| Yearly savings | ₹35,000 – ₹43,000 |
| Payback | ~2.5 – 3 years |
| 25-year savings | ₹8 – 10 lakh |
5. Loan option — zero burden
PM Surya Ghar loans (SBI, PNB, Bank of Baroda and 9 other PSBs) let you finance the plant at ~7% effective rates. A ₹1 lakh loan over 5 years costs ≈ ₹2,000/month — while the plant saves ₹3,000+/month. You're cash-positive from month one.
6. What we include in our 3 kW quote
- 5–6 ALMM-listed panels (Tata/Adani/Waaree/Vikram/Goldi — your choice)
- 3 kW Growatt / Sungrow / Havells inverter with Wi-Fi app
- HDGI structure, DC/AC cabling, ACDB/DCDB, earthing
- PM Surya Ghar application + net-metering paperwork + subsidy follow-up