Financing a solar installation in 2026 no longer requires a large upfront payment. Banks like SBI, HDFC, and PNB offer dedicated solar loans, while IREDA (Indian Renewable Energy Development Agency) provides specialised financing for both residential and commercial projects. With interest rates ranging from 8.5% to 10.5%, the EMI on a ₹2 lakh solar loan can be as low as ₹1,900 per month over 10 years — less than most household electricity bills.
Key takeaway. Solar loan interest rates in India in 2026 range from 8.5% (SBI) to 10.5% (HDFC top-up). IREDA offers 8.75–9.5% for residential and 9.5–10.5% for commercial projects. A 5 kW rooftop system financed at 9% over 10 years costs approximately ₹2,500/month EMI — comparable to the electricity bill it replaces. Heaven Green Energy assists with loan documentation for all major lenders.
Choosing the right lender can save you ₹30,000–₹60,000 in total interest over the loan tenure. This comparison covers every major lender’s rate, eligibility criteria, and processing steps so you can pick the best option for your situation.
Why Solar Loans Have Improved Dramatically in 2026
The solar financing landscape has changed significantly. Banks now treat rooftop solar as a productive asset — not a luxury purchase — because the system generates quantifiable bill savings. The Reserve Bank of India’s priority sector lending guidelines classify solar installations under renewable energy, which gives banks incentive to offer competitive rates.
IREDA, the government’s dedicated renewable energy lender, has expanded its retail solar loan products since 2024 and now partners with state-level DISCOMs and PM Suryaghar implementation agencies to offer pre-approved loans at concessional rates. According to IREDA’s 2025 annual report, cumulative solar loan disbursements crossed ₹50,000 crore in FY2025.
The net result for consumers: solar is now more accessible than ever. You can finance 80–90% of the system cost, repay it from the electricity savings, and still come out net-positive on cash flow from month one in many cases.
Bank-by-Bank Interest Rate and EMI Comparison
The table below compares the four most commonly used solar lenders as of June 2026. EMI figures are calculated for a ₹2,00,000 loan (typical 5 kW system after PM Suryaghar subsidy) at the indicative rates.
| Lender | Interest Rate | Loan Tenure | Max Loan Amount | Processing Fee | EMI (₹2L, 10yr) |
|---|---|---|---|---|---|
| SBI (Green Home/Solar EMI) | 8.50–9.50% | Up to 15 years | ₹30 lakh | 0.35% + GST | ₹1,976–₹2,070 |
| HDFC (Solar Top-up) | 9.00–10.50% | Up to 15 years | ₹30 lakh | 0.50–1.00% | ₹2,018–₹2,175 |
| PNB (Green Car/Solar) | 9.25–10.00% | Up to 10 years | ₹15 lakh | 0.25% | ₹2,095–₹2,149 |
| IREDA (Retail Solar) | 8.75–10.50% | Up to 15 years | ₹50 lakh (commercial) | 0.50% | ₹1,995–₹2,175 |
Source: Lender websites and IREDA scheme documents, June 2026. EMI is indicative; actual rate depends on credit score and property valuation.
💡 Fast tip
SBI's solar loan is linked to their MCLR + spread — borrowers with a CIBIL score above 750 get the lowest spread and can lock in rates close to 8.5%. Check your score before applying.
SBI Solar Loan: Rates, Eligibility, and Process
State Bank of India offers solar financing under the SBI Green Home Loan and SBI Saral Solar products. These are broadly available to salaried and self-employed individuals who own their property.
Key SBI solar loan parameters as of 2026:
- Interest rate: 8.50–9.50% p.a. (floating, linked to SBI MCLR 1-year)
- Maximum loan: ₹30 lakh for residential; higher limits for commercial under business loan category
- Tenure: Up to 15 years
- Collateral: Nil for loans up to ₹10 lakh (if salaried with clean credit); mortgage for higher amounts
- Processing fee: 0.35% of loan amount + 18% GST
- Pre-payment: Allowed without penalty after 12 EMIs
SBI requires an MNRE-empanelled installer’s quotation, proof of property ownership, and DISCOM sanction letter for net metering. Heaven Green Energy is MNRE-empanelled across UGVCL, DGVCL, MGVCL, and PGVCL in Gujarat, which means our quotations are accepted directly by SBI for loan processing.
For a detailed breakdown, read our SBI solar loan guide for 2026. You can also check SBI’s official solar loan page for current scheme details.
HDFC Solar Loan: Rates, Eligibility, and Process
HDFC Bank and HDFC Ltd. offer solar financing as a top-up on existing home loans or as standalone green personal loans. The structure differs slightly from SBI:
- Interest rate: 9.00–10.50% p.a. (linked to HDFC RPLR)
- Maximum loan: ₹30 lakh (higher through commercial loan vertical)
- Tenure: Up to 15 years
- Processing fee: 0.50–1.00% of loan amount (negotiable for existing home loan customers)
- Pre-closure: 2% foreclosure charge within first 36 months
HDFC’s advantage is speed — existing HDFC home loan customers can get a solar top-up approved in 48–72 hours without fresh KYC. The rate for existing customers is typically at the lower end of the range (9.00–9.25%).
Full details in our HDFC solar loan guide for 2026. Current HDFC RPLR rates are published on the HDFC Bank rate page.
IREDA Solar Loan: Best Option for Commercial Projects
IREDA (Indian Renewable Energy Development Agency) is the government-backed NBFC specifically for renewable energy financing. Its solar loan products are particularly competitive for commercial and industrial buyers.
IREDA residential solar loan:
- Rate: 8.75–9.50% p.a.
- Tenure: Up to 10 years
- Maximum: ₹10 lakh per borrower
- Collateral: Not required up to ₹5 lakh
IREDA commercial/industrial solar loan:
- Rate: 9.50–10.50% p.a.
- Tenure: Up to 15 years
- Maximum: ₹50 lakh per borrower (higher through project finance)
- Collateral: Solar system as primary collateral; property mortgage for large amounts
IREDA loans are disbursed through empanelled installers and channel partners. Because IREDA focuses solely on renewable energy, its loan officers understand solar projects better than most bank branch staff — approvals tend to be faster and documentation requirements are more predictable. See the IREDA website for current scheme details.
The EMI Payback Alignment Framework
At Heaven Green Energy, we use a tool called the EMI Payback Alignment Framework to help buyers choose loan terms that make their solar investment cash-flow positive from month one.
The principle is simple: your monthly EMI should be less than or equal to the monthly electricity bill savings the solar system generates. When EMI ≤ bill savings, you pay zero net cost and own the system free and clear after the loan tenure.
Here is how to apply it:
- Calculate your monthly bill savings. Take your current monthly electricity bill and multiply by 0.75 (solar typically offsets 70–80% of consumption). Example: ₹5,000 bill × 0.75 = ₹3,750 savings.
- Set your maximum EMI. Your EMI must not exceed ₹3,750 in this example.
- Work backwards to tenure. At 9% interest, ₹3,750 EMI supports a ₹2,85,000 loan over 10 years or ₹3,45,000 over 15 years.
- Size your down payment accordingly. If the system costs ₹3,80,000 after subsidy, you need a ₹35,000 down payment to keep the loan at ₹3,45,000 on a 15-year tenure at the cash-flow neutral point.
- Re-check after rate revision. Floating-rate loans change with MCLR. Build a 1% buffer — ensure the EMI works even if the rate rises by 1%.
This framework is far more useful than comparing interest rates in isolation. A marginally higher rate with a longer tenure can be cash-flow positive, while a lower rate with a short tenure can create negative monthly cash flow.
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PNB Green Solar Loan: Rates and Eligibility
Punjab National Bank offers solar financing under its PNB Green Car Loan / Green Loan vertical. While originally designed for electric vehicles, PNB’s green loan product was extended to solar installations in 2024.
- Interest rate: 9.25–10.00% p.a.
- Maximum loan: ₹15 lakh
- Tenure: Up to 10 years
- Processing fee: 0.25% (lower than most competitors)
- Documentation: Property proof, income proof, MNRE-empanelled installer quote
PNB’s lower processing fee makes it competitive on small loans (₹2–5 lakh), where the absolute savings on processing fees matter more than the slightly higher rate differential.
Common Mistakes When Applying for a Solar Loan
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1
Applying without a DISCOM sanction letter — Most banks require proof that your DISCOM has approved net metering before disbursing the loan. Get the sanction first.
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2
Choosing the shortest tenure to save interest — A short tenure creates high EMI. If EMI exceeds bill savings, the system is cash-flow negative. Use the EMI Payback Alignment Framework above.
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3
Not deducting PM Suryaghar subsidy before loan sizing — Apply for subsidy first, then size the loan on the post-subsidy cost. Read about the [PM Suryaghar application process](/blog/pm-suryaghar-complete-guide).
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4
Using a non-MNRE-empanelled installer quote — Banks will reject or delay loan processing if the installer is not MNRE-empanelled. Always verify empanelment status before getting a quote.
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5
Ignoring the hidden costs of solar financing — Processing fees, insurance, and pre-payment penalties add to total cost. Check our guide on [hidden costs of solar financing](/blog/hidden-costs-of-solar-financing).
⚠️ Watch out
Some fintech solar loans advertise "0% interest" but embed the interest cost in a higher system price. Always compare the total cost of ownership — system price plus all financing charges — not just the advertised rate.
Pros and Cons of Solar Loans vs. Outright Purchase
- Low upfront capital — start saving from month one
- System ownership stays with you (unlike OPEX/PPA)
- You claim full Accelerated Depreciation tax benefit
- Loan interest is tax-deductible for businesses
- Interest adds 15–25% to total project cost over tenure
- Floating rates can increase EMI over time
- Credit score and property documents required
- O&M costs remain your responsibility
How Heaven Green Energy Helps You Get the Best Solar Loan
Heaven Green Energy’s finance team has processed over 2,000 solar loans across SBI, HDFC, PNB, and IREDA branches in Gujarat. We know which branch managers approve quickly, what documentation each lender actually needs, and how to structure the project cost to maximise your loan-to-value ratio.
- Residential Solar — end-to-end support including SBI/HDFC loan documentation and PM Suryaghar subsidy filing.
- Commercial Solar — IREDA loan support with ROI modelling showing EMI vs. bill savings from month one.
- Industrial Solar EPC — project finance structuring for 100 kW+ with DSCR analysis.
- Solar Calculator — enter your bill and see your EMI vs. savings comparison instantly.
Contact our team at +91 63904 05060 or request a callback — our finance specialist will recommend the best lender for your profile.
Frequently Asked Questions
Which bank offers the lowest interest rate for solar loans in India in 2026?
SBI offers the lowest solar loan rate at 8.5–9.5% p.a. as of June 2026, linked to the SBI 1-year MCLR. Borrowers with a CIBIL score above 750 and salaried income typically qualify for the lower end of this range. IREDA is competitive for commercial loans at 9.5–10.5%, with the advantage of dedicated renewable energy underwriting.
What is the EMI for a ₹3 lakh solar loan over 10 years?
At 9% interest rate, the EMI for a ₹3 lakh loan over 10 years is approximately ₹3,800 per month. At 8.5%, it drops to ₹3,716. Use our solar calculator to model different scenarios. Most 5–7 kW systems after PM Suryaghar subsidy fall in the ₹2–3 lakh loan range.
Does SBI offer a solar-specific loan or is it a personal loan?
SBI offers solar financing under the SBI Green Home Loan product (for homeowners) and the SBI Saral Solar scheme. These are not personal loans — they are secured loans with lower rates. For commercial solar, SBI offers financing through its MSME and commercial loan products. Personal loans for solar typically carry 14–16% interest and should be avoided.
Is IREDA better than bank loans for solar?
IREDA is better for commercial and industrial projects because its loan officers specialise in renewable energy, approvals are faster, and collateral terms are more flexible (solar system accepted as primary collateral). For residential buyers, SBI or HDFC home loan top-ups are often easier to access. IREDA’s residential retail product is competitive but requires more documentation.
Can I get a solar loan without property as collateral?
Yes. SBI and HDFC offer solar loans without property collateral for amounts up to ₹10 lakh, provided you have a good credit score (above 700) and stable income. Above ₹10 lakh, most lenders require a property mortgage. IREDA accepts the solar system itself as collateral for commercial loans up to ₹50 lakh.
How long does solar loan approval take?
SBI and HDFC typically approve solar loans in 7–15 working days after complete document submission. IREDA can take 15–30 days. Common delays: missing MNRE empanelment certificate from the installer, no DISCOM sanction letter, or income documents not matching the ITR. Heaven Green Energy provides all installer-side documents within 24 hours of request.
Can I prepay my solar loan without penalty?
SBI allows prepayment without penalty after 12 EMIs for floating-rate loans. HDFC charges a 2% foreclosure fee within the first 36 months. PNB generally allows part-prepayment twice a year. Always check the prepayment clause before signing — your electricity savings may allow you to close the loan early, and penalties can erase that benefit.
