Solar Loan Interest Rate 2026 | SBI, Canara & HDFC Compared

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 ₹1,00,000 combined subsidy (₹78,000 PM Surya Ghar + ₹22,000 Tamil Nadu state top-up) applied as a prepayment after commissioning, a 3 kW system typically costs just ₹1,161/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 combined ₹1,00,000 subsidy — ₹78,000 central plus the ₹22,000 Tamil Nadu state top-up under G.O. 102 — reduces this to ₹25,000–₹67,000, both amounts arrive after commissioning. You still have to fund the full cost on day one. 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 ₹80,000 (after both subsidies) financed at 8.5% for 5 years has an EMI of approximately ₹1,641. 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:

1. Apply for PM Surya Ghar at pmsuryaghar.gov.in and get feasibility approval
2. Apply for a solar loan from your preferred bank for the full system cost
3. Get the system installed by an empanelled vendor (like Tristar)
4. Begin EMI payments — your electricity savings offset the EMI
5. Receive the central subsidy (₹30,000–₹78,000) within 45–60 days of commissioning
6. Receive the Tamil Nadu state top-up (₹5,000 / ₹10,000 / ₹22,000 by system size), disbursed separately by TEDA via Direct Benefit Transfer after commissioning and inspection — usually after the central subsidy
7. Use both amounts 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 — but note that the loan must be sized against the gross system cost, not the net. Neither subsidy is a discount on the invoice; both are reimbursements that arrive months later.

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	₹1,00,000 (₹78,000 central + ₹22,000 state)
Revised loan after prepayment	₹80,000
Revised EMI	₹864/month
Monthly electricity savings	₹1,500–₹2,300
Net monthly savings	₹636–₹1,436 (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	₹1,00,000 (₹78,000 central + ₹22,000 state)
Revised loan after prepayment	₹1,90,000
Revised EMI	₹1,866/month
Monthly electricity savings	₹2,500–₹4,000
Net monthly savings	₹634–₹2,134 (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	₹1,00,000 (max cap, residential connection only)
Revised loan after prepayment	₹3,90,000
Revised EMI	₹4,629/month
Monthly electricity savings	₹5,000–₹9,000
Net monthly savings	₹371–₹4,371 (savings exceed EMI)

Zero Down Payment Solar: Is It Possible?

Yes — with several approaches:

1. Bank loan for full amount + subsidy prepayment: As shown above, this requires zero upfront cash
2. NBFC/fintech solar financing: Companies like SolarSquare, Loom Solar Finance, and others offer EMI plans with zero down payment directly through the installer
3. 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.

The Tamil Nadu state top-up works the same way — TEDA credits it to the same beneficiary account by DBT, coordinated with TNGECL, after commissioning and inspection. Because it lands after the central subsidy, plan for two separate prepayments rather than one.

Timeline sequence:

1. Day 0: Solar loan sanctioned, system installation begins
2. Day 2–3: Installation complete, EMI payments start
3. Day 10–25 (working days): TANGEDCO inspection and net metering commissioned
4. After inspection: Upload commissioning certificate to PM Surya Ghar portal
5. Within 30 working days: Central subsidy credited to your Aadhaar-linked bank account
6. After that: Tamil Nadu state top-up credited separately by TEDA via DBT
7. On receipt: Use each amount to prepay loan principal — revised EMI or tenure

During the period before the subsidies arrive, you pay the initial EMI on the full loan. Plan for approximately 1–2 months of full EMI payments before the central subsidy reduces your principal, and longer before the state top-up does.

Tips for Getting the Best Solar Loan Terms

1. Apply at the bank where you have a salary or savings account — existing customers get preferred rates
2. Check your CIBIL score before applying — a score above 750 gets the best interest rates
3. Compare effective interest rates (including processing fees) across at least 2–3 banks
4. Choose a tenure that keeps your EMI below your expected electricity savings — this ensures the loan is self-paying
5. Opt for no prepayment penalty — confirm that the bank allows part prepayment without charges when the subsidy arrives
6. Get the solar quotation first — banks need the system quotation from the installer to process the loan

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Disclaimer: Subsidy amounts and eligibility can change, and the state top-up is limited to the first 1,00,000 applicants — confirm current status on pmsuryaghar.gov.in and with TEDA/TANGEDCO before purchase.

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.