On This Page
Quick Answer: Solar loan interest rates in India range from 8.15%–9.50% (SBI Surya Shakti) to 9.50%–12.00% (HDFC Green Loan) for tenures of 5–7 years. Most Tamil Nadu homeowners get the best deal with SBI — no collateral up to ₹7.5 lakh, lowest rate, and 7-year tenure. With the ₹78,000 PM Surya Ghar subsidy applied as a prepayment after commissioning, a 3 kW system typically costs just ₹1,480/month EMI — often less than your current electricity bill savings from day one. Read on for the full bank-by-bank comparison, EMI tables for 3–10 kW systems, and the exact document checklist.
The upfront cost of a rooftop solar system — even after the PM Surya Ghar subsidy — can be a barrier for many households. A 3 kW system costs ₹1,25,000–₹1,67,000 before subsidy, and while the ₹78,000 subsidy reduces this significantly, not every family has ₹50,000–₹90,000 available upfront. This is where solar loans come in. Several Indian banks and NBFCs now offer dedicated solar financing products with competitive interest rates, and when combined with the government subsidy, they can make solar accessible with near-zero or minimal upfront investment.
Why Solar Loans Make Financial Sense
Unlike a car loan or personal loan where you are paying interest on a depreciating asset, a solar loan finances an asset that generates returns from day one. Your monthly EMI is typically less than your current electricity bill savings, making the loan effectively self-paying.
Example: A 3 kW system costing ₹1,02,000 (after subsidy) financed at 8.5% for 5 years has an EMI of approximately ₹2,090. If the system saves you ₹1,800–₹2,300 per month on electricity, the loan nearly pays for itself from month one. After the loan is repaid, the savings are entirely yours for the remaining 20+ years.
Bank-Wise Solar Loan Comparison
SBI Solar Loan Scheme
State Bank of India offers one of the most established solar loan products in India:
| Parameter | Details |
|---|---|
| Scheme Name | SBI Surya Shakti Solar Finance |
| Eligible Borrowers | Salaried, self-employed, pensioners |
| Loan Amount | Up to ₹10,00,000 (or system cost minus subsidy) |
| Interest Rate | 8.15%–9.50% (linked to MCLR, varies with credit score) |
| Tenure | Up to 7 years |
| Collateral | No collateral up to ₹7,50,000 |
| Processing Fee | 0.50% of loan amount + GST |
| Repayment | EMI via auto-debit from SBI account |
SBI's solar loan is one of the most cost-effective options, especially for existing SBI account holders. The bank has streamlined the documentation process and many branches are now familiar with solar loan applications.
Bank of Baroda Solar Loan
| Parameter | Details |
|---|---|
| Scheme Name | Baroda Solar Loan |
| Eligible Borrowers | Individuals, housing societies, trusts |
| Loan Amount | Up to ₹10,00,000 |
| Interest Rate | 8.50%–10.00% |
| Tenure | Up to 7 years |
| Collateral | No collateral up to ₹5,00,000 |
| Processing Fee | 0.50% of loan amount |
| Special Feature | Can finance solar water heaters as well |
Canara Bank Solar Financing
| Parameter | Details |
|---|---|
| Scheme Name | Canara Solar Loan |
| Eligible Borrowers | Individuals with existing Canara Bank accounts |
| Loan Amount | Up to ₹10,00,000 |
| Interest Rate | 8.65%–10.25% |
| Tenure | Up to 5 years |
| Collateral | No collateral up to ₹5,00,000 |
| Processing Fee | 0.50% of loan amount |
HDFC Bank Green Loan
| Parameter | Details |
|---|---|
| Scheme Name | HDFC Personal Loan — Green Category |
| Eligible Borrowers | Salaried and self-employed (HDFC customers preferred) |
| Loan Amount | Up to ₹15,00,000 |
| Interest Rate | 9.50%–12.00% |
| Tenure | Up to 5 years |
| Collateral | Unsecured |
| Processing Fee | Up to 2.0% of loan amount |
| Advantage | Fast digital approval for existing HDFC customers |
ICICI Bank Solar Financing
| Parameter | Details |
|---|---|
| Scheme Name | ICICI Home Finance — Solar Financing |
| Eligible Borrowers | Homeowners with existing ICICI relationship |
| Loan Amount | ₹50,000–₹10,00,000 |
| Interest Rate | 9.00%–11.50% |
| Tenure | Up to 5 years |
| Collateral | Unsecured for amounts up to ₹5,00,000 |
| Processing Fee | 1.0%–2.0% of loan amount |
Interest Rate Comparison Summary
| Bank | Interest Rate Range | Max Tenure | Best For |
|---|---|---|---|
| SBI | 8.15%–9.50% | 7 years | Lowest rate, longest tenure |
| Bank of Baroda | 8.50%–10.00% | 7 years | Good rate, housing society loans |
| Canara Bank | 8.65%–10.25% | 5 years | Existing Canara customers |
| HDFC Bank | 9.50%–12.00% | 5 years | Fast digital approval |
| ICICI Bank | 9.00%–11.50% | 5 years | Flexible amounts |
PM Surya Ghar Subsidy + Loan: The Optimal Combination
The most financially efficient approach combines the PM Surya Ghar subsidy with a bank loan:
- Apply for PM Surya Ghar at pmsuryaghar.gov.in and get feasibility approval
- Apply for a solar loan from your preferred bank for the full system cost
- Get the system installed by an empanelled vendor (like Tristar)
- Begin EMI payments — your electricity savings offset the EMI
- Receive subsidy (₹30,000–₹78,000) within 45–60 days of commissioning
- Use the subsidy to prepay the loan — this reduces your outstanding principal and either shortens the tenure or reduces the EMI
This approach means you need zero upfront cash — the loan covers the installation, and the subsidy arrives shortly after to reduce the loan burden.
EMI Calculation Examples
Here are realistic EMI scenarios for common system sizes based on current Tristar pricing:
3 kW System
| Parameter | Amount |
|---|---|
| System cost | ₹1,80,000 |
| Loan amount (full cost) | ₹1,80,000 |
| Initial EMI | ₹1,943/month |
| Subsidy received | ₹78,000 |
| Revised loan after prepayment | ₹1,02,000 |
| Revised EMI | ₹1,107/month |
| Monthly electricity savings | ₹1,500–₹2,300 |
| Net monthly savings | ₹393–₹1,193 (savings exceed EMI) |
5 kW System
| Parameter | Amount |
|---|---|
| System cost | ₹2,90,000 |
| Loan amount | ₹2,90,000 |
| Initial EMI | ₹2,848/month |
| Subsidy received | ₹78,000 |
| Revised loan after prepayment | ₹2,12,000 |
| Revised EMI | ₹1,923/month |
| Monthly electricity savings | ₹2,500–₹4,000 |
| Net monthly savings | ₹577–₹2,077 (savings exceed EMI) |
10 kW System (Large Home / Small Commercial)
| Parameter | Amount |
|---|---|
| System cost | ₹4,90,000 |
| Loan amount | ₹4,90,000 |
| Initial EMI | ₹5,816/month |
| Subsidy received | ₹78,000 (max cap) |
| Revised loan after prepayment | ₹4,12,000 |
| Revised EMI | ₹4,891/month |
| Monthly electricity savings | ₹5,000–₹9,000 |
| Net monthly savings | ₹109–₹4,109 (savings exceed EMI) |
Zero Down Payment Solar: Is It Possible?
Yes — with several approaches:
- Bank loan for full amount + subsidy prepayment: As shown above, this requires zero upfront cash
- NBFC/fintech solar financing: Companies like SolarSquare, Loom Solar Finance, and others offer EMI plans with zero down payment directly through the installer
- Solar rental/OPEX model (commercial): For commercial consumers, some providers install the system at zero cost and charge a per-unit rate lower than the grid tariff. Tristar offers OPEX models for eligible commercial projects
Documentation Required for Solar Loans
Prepare these documents before applying:
For Salaried Individuals
- PAN card and Aadhaar card
- Last 3 months salary slips
- Last 6 months bank statements
- Proof of residence (utility bill/Aadhaar)
- Solar system quotation from the installer (we provide this)
For Self-Employed / Business Owners
- PAN card and Aadhaar card
- Last 2 years ITR with computation
- Last 6 months bank statements (business and personal)
- Business proof (GST registration, Udyam certificate)
- Solar system quotation
Additional Documents
- Property ownership proof (for the installation site)
- TANGEDCO electricity bill (to verify consumer category and consumption)
How Subsidy Disbursement Works with Loans
A common concern: will the bank allow you to use the subsidy to prepay the loan? The answer is yes — the PM Surya Ghar subsidy is a Direct Benefit Transfer (DBT) to your Aadhaar-linked bank account. Once credited, you can use it freely, including for loan prepayment.
Timeline sequence:
- Day 0: Solar loan sanctioned, system installation begins
- Day 2–3: Installation complete, EMI payments start
- Day 10–25 (working days): TANGEDCO inspection and net metering commissioned
- After inspection: Upload commissioning certificate to PM Surya Ghar portal
- Within 30 working days: Subsidy credited to your Aadhaar-linked bank account
- On receipt: Use subsidy amount to prepay loan principal — revised EMI or tenure
During the period before subsidy arrival, you pay the initial EMI. Plan for approximately 1–2 months of full EMI payments before the subsidy reduces your principal.
Tips for Getting the Best Solar Loan Terms
- Apply at the bank where you have a salary or savings account — existing customers get preferred rates
- Check your CIBIL score before applying — a score above 750 gets the best interest rates
- Compare effective interest rates (including processing fees) across at least 2–3 banks
- Choose a tenure that keeps your EMI below your expected electricity savings — this ensures the loan is self-paying
- Opt for no prepayment penalty — confirm that the bank allows part prepayment without charges when the subsidy arrives
- Get the solar quotation first — banks need the system quotation from the installer to process the loan
Need help with solar financing? Tristar Green Energy Solutions assists customers with the complete financing process — from providing detailed quotations that banks accept to coordinating subsidy documentation. We work with all major banks and can recommend the most suitable financing option for your situation. Contact us for a free consultation, or use our solar calculator to estimate your system cost and savings before approaching the bank.
Ready to Go Solar?
Get a personalized solar quote based on your electricity consumption and roof area.
Related Articles
SBI Solar Loan Interest Rate 2026 | Surya Ghar vs Banks
SBI Surya Ghar undercuts most private banks on interest rate — but approval speed and documentation differ. Compare actual rates, EMIs for 3–10kW systems, subsidy-linked disbursement timing, and which lender suits your profile in Tamil Nadu 2026.
Zero Down Payment Solar: EMI Options Available in India 2026
Discover how you can go solar with zero down payment using flexible EMI plans. Compare loan options, NBFCs, and bank financing available for residential and commercial solar in Tamil Nadu.
Tristar vs Local Integrators: MNRE License Matters
Understanding MNRE vendor categories and why choosing an A-grade licensed installer like Tristar Green Energy Solutions protects your PM Surya Ghar subsidy eligibility and ensures quality workmanship.