A 3kW rooftop solar system in Bengaluru costs approximately ₹87,000 after the PM Surya Ghar central subsidy of ₹78,000 — down from ₹1,65,000 before subsidy. For most Bengaluru homes with BESCOM bills of ₹2,500–₹4,500 per month, this gives a payback period of 3–4 years. After that, 20+ years of near-free electricity. Here are the exact numbers for every system size.
What does rooftop solar cost in Bengaluru — by system size?
Prices are for Bengaluru BESCOM area. Subsidy capped at ₹78,000 for systems 3kW and above. Savings estimated at ₹8/unit × 4 units/kW/day × 30 days. Actual savings depend on your consumption pattern and BESCOM tariff slab.
Why is 3kW the most popular system in Bengaluru?
Three reasons make 3kW the sweet spot for most Bengaluru independent houses:
- Maximum subsidy at minimum size: The PM Surya Ghar subsidy is capped at ₹78,000 for 3kW and above. A 4kW system gets the same ₹78,000 subsidy as 3kW but costs ₹45,000 more. So the subsidy percentage is highest at 3kW.
- Covers most typical consumption: A 3kW system in Bengaluru generates roughly 12–14 units per day under normal conditions — enough to cover most homes on a ₹2,500–₹4,000 monthly bill.
- Fits most Bengaluru roofs: A 3kW system needs approximately 180–200 sq ft of shadow-free roof area. Most 30×40 and 40×60 BDA sites in HSR Layout, JP Nagar, Koramangala, and Banashankari comfortably accommodate this.
What factors affect the final cost of solar in Bengaluru?
The prices above are for a standard rooftop installation. Your actual quote may vary based on:
| Factor | Impact on cost |
|---|---|
| Panel brand (Tier 1 vs local brand) | ±₹10,000–₹20,000 |
| Inverter type (string vs micro) | ±₹8,000–₹25,000 |
| Mounting structure (flat roof vs sloped) | ±₹5,000–₹15,000 |
| Shadow analysis (shading from trees/buildings) | May change system design |
| Roof condition (needs waterproofing work) | ₹5,000–₹20,000 extra |
| Distance from main panel (long cable run) | ±₹3,000–₹8,000 |
| Net meter upgrade (if old meter) | Usually covered by BESCOM |
Our free site survey accounts for all of these and gives you an exact price — not a range. We don't quote ranges; we quote actuals after seeing your roof.
How much will you actually save on your BESCOM bill?
Your monthly savings depend on your current bill and the system size. Here's a realistic guide for Bengaluru homes:
| Current BESCOM bill | Recommended system | Expected savings | Remaining bill |
|---|---|---|---|
| ₹1,000–₹1,500 | 1–2 kW | ₹700–₹1,200/month | ₹200–₹400 |
| ₹1,500–₹3,000 | 2–3 kW | ₹1,200–₹2,400/month | ₹200–₹600 |
| ₹3,000–₹5,000 | 3 kW | ₹2,000–₹2,800/month | ₹300–₹800 |
| ₹5,000–₹8,000 | 3–4 kW | ₹2,400–₹3,500/month | ₹500–₹1,500 |
| ₹8,000+ | 4–5 kW | ₹3,200–₹4,500/month | ₹500–₹2,000 |
These estimates assume average Bengaluru irradiation of 5.5 peak sun hours per day and BESCOM residential tariff. The higher your current bill, the better your solar ROI — higher-slab BESCOM consumers save more per unit because they are paying higher tariff rates.
Is the PM Surya Ghar subsidy deducted upfront or reimbursed?
The ₹78,000 subsidy is reimbursed after installation — not deducted upfront. Here is how the money flows:
- You pay the full system cost (e.g. ₹1,65,000 for 3kW) to the vendor at the time of installation
- After BESCOM commissioning and net meter installation, the vendor submits your subsidy claim
- The central government credits ₹78,000 directly to your Aadhaar-linked bank account within 4–6 weeks
- Net effective cost: ₹1,65,000 − ₹78,000 = ₹87,000
At Bengaluru Solar, we give our customers a clear payment schedule upfront — 50% advance, 50% after installation — and we track your subsidy daily until it lands in your account.
Can you get a loan for rooftop solar in Bengaluru?
Yes. Several nationalised banks offer dedicated solar loans, and the PM Surya Ghar scheme specifically encourages concessional financing. Options include:
- SBI Solar Home Loan: Available for PM Surya Ghar beneficiaries at 7–7.5% interest. Loan up to ₹2 lakh for residential systems.
- Canara Bank Solar Loan: Specific solar loan product at 8–9% with flexible tenure up to 7 years.
- Union Bank Green Loan: Available for BESCOM area customers with solar installation.
For a 3kW system: after the ₹78,000 subsidy, the remaining ₹87,000 financed at 8% over 5 years = approximately ₹1,750/month EMI. For most Bengaluru homes, your BESCOM bill savings of ₹2,400/month will exceed the EMI from day one.
Bengaluru vs other cities — is solar cheaper here?
Solar system costs are broadly similar across Indian cities for the same equipment tier. What makes Bengaluru particularly attractive for solar:
- High irradiation: Bengaluru averages 5.5 peak sun hours per day — better than Mumbai (4.8) and similar to Chennai (5.6). More sun = more generation = faster payback.
- Rising BESCOM tariffs: BESCOM residential tariffs have increased by 10–15% in recent years. Higher tariffs mean larger savings from every unit you generate.
- Strong empanelled vendor network: BESCOM area has a growing number of empanelled vendors, keeping installation quality and prices competitive.
Get your exact price
Free site survey — no estimates, exact figures.
We visit your home in Bengaluru, assess your roof, and give you an exact price — not a range. PM Surya Ghar subsidy, installation, and 25-year AMC all included.