The solar loan vs personal loan decision is the single biggest financing question a homeowner faces before committing to rooftop solar in 2026. The headline gap is wide: the dedicated solar loans, the PM Surya Ghar loans from public sector banks, are listed at 5.75% per annum up to ₹2 lakh and 7.90% from ₹2 lakh to ₹6 lakh at SBI, while personal loans start around 10% and run well above it (ICICI lists 9.99% to 16.50%; Tata Capital advertises from 10.99%). On ₹2 lakh over five years, that is ₹30,601 of interest at 5.75% against ₹60,849 at 10.99%. Scheme loans, however, come with a non-negotiable condition: the bank pays only a vendor registered on the PM Surya Ghar national portal, and the system must qualify under the scheme, including DCR modules from the ALMM (Approved List of Models and Manufacturers) register. Personal loans carry no such restriction, but the higher interest rate erodes the very savings rooftop solar is meant to produce. For most residential buyers, the rate gap wins the argument; for a small minority, speed and flexibility tip it the other way.
This guide walks through the five variables that actually decide the choice, side-by-side EMI (Equated Monthly Instalment) numbers for a 5 kW system, the lender list for both categories, and the situations where a personal loan genuinely outperforms a solar loan. We also flag the most expensive mistake we see, borrowers picking a personal loan for speed, then losing the ₹78,000 PM Suryaghar subsidy because their installer wasn’t registered on the PM Surya Ghar national portal.
Direct answer. For rooftop solar in 2026, a PM Surya Ghar bank loan is better than a personal loan for most residential buyers: SBI lists 5.75% up to ₹2 lakh and 7.90% up to ₹6 lakh, for up to 120 months with nil processing fee, while personal loans start around 10% and run 6 years at many lenders. On a ₹2 lakh, 5-year loan, 5.75% instead of 10.99% saves about ₹30,000 in interest. Personal loans mainly win when you lack rooftop rights, need more than ₹6 lakh, or cannot wait for the portal and branch process.
If you have rooftop rights, your KYC in order, and a CIBIL (Credit Information Bureau India Limited) score of 650 or more (SBI sets no minimum up to ₹2 lakh), the scheme loan is almost always the cheaper route. Read on for the side-by-side maths.
Why This Decision Matters, Total Interest Over 5 Years
Rooftop solar is, at its core, a financial product disguised as an electrical installation. You’re swapping a recurring utility bill for a fixed asset, and the cheapness of that swap depends on two numbers: the system cost and the cost of the money you borrow to buy it. The first is largely fixed by panel and inverter prices; the second is entirely a function of which loan you choose.
A 5 kW residential system in 2026 costs roughly ₹2.85 lakh before subsidy and ₹2.07 lakh after the ₹78,000 PM Suryaghar subsidy. Most homeowners effectively finance the post-subsidy cost, about ₹2 lakh, through a bank or NBFC (Non-Banking Financial Company); with a scheme loan, the subsidy is credited to the loan account after commissioning. Over a 5-year tenure, that ₹2 lakh principal generates ₹30,601 in interest at SBI’s 5.75% scheme rate but ₹60,849 at a 10.99% personal loan and ₹79,219 at 14%: a delta of ₹30,000 to ₹49,000 that the borrower keeps or hands to the lender depending entirely on the loan category chosen.
The scheme loan also runs longer, up to 120 months including a 6-month moratorium, which drops the monthly EMI and frees cash flow for other expenses or pre-payments. Personal loans run 72 months at ICICI and 6 years at Tata Capital; Bajaj Finance offers up to 108 months, but its rates run from 10% to 30.5%.
The other dimension is the PM Suryaghar subsidy itself. Under the Ministry of New and Renewable Energy (MNRE) rules, the ₹78,000 subsidy is paid only if the installer is a vendor registered on the national portal at pmsuryaghar.gov.in and the system uses DCR (domestically manufactured) modules. A personal loan lets you fund any installer, including unregistered ones, but the moment you do, the subsidy is forfeited. That single error converts a “small rate premium” personal loan into a “₹78,000 net loss” personal loan. The category decision and the subsidy decision are linked, even though they sit in different parts of the buying journey.
The 5-Variable Solar Loan vs Personal Loan Decision Matrix
This is the framework we walk residential buyers through before they sign any financing document. Five variables, weighted by their actual rupee impact, decide which loan category fits a given borrower. Walk through each row honestly and the answer falls out, there’s no judgement call left at the end.
| Variable | Solar Loan | Personal Loan | Weight |
|---|---|---|---|
| Interest rate | 5.75% up to ₹2 lakh; 7.90% up to ₹6 lakh (SBI) | From about 10% (ICICI 9.99%–16.50%) | High, ₹30K–₹50K impact on ₹2 lakh over 5 years |
| Tenure | Up to 120 months incl. 6-month moratorium | 72 months (ICICI), 6 years (Tata Capital) | Medium, monthly EMI relief |
| Processing fee | Nil at SBI, PNB and Bank of Baroda | Up to 2% (ICICI); up to 4.13% (Bajaj Finance) | Low to medium, up to ₹4K–₹8.3K on ₹2 lakh |
| Documentation | KYC (Know Your Customer) + electricity bill; income proof above ₹2 lakh; portal registration + vendor quotation | KYC + income only | Medium, decides approval speed |
| Vendor restriction | Vendor registered on the PM Surya Ghar national portal | Any installer | High, subsidy risk |
Variable 1, Interest rate. This is where the rupee gap lives. Scheme loans are priced cheaper because the bank holds the solar system as security (hypothecation), because MNRE’s guidelines envisage loans near the benchmark rate (repo + 0.5%) for systems up to 3 kW, and because PNB, for one, classifies them as priority sector loans. Personal loans are fully unsecured, so the rate prices in default risk. The gap is structural, not promotional.
Variable 2, Tenure. Scheme loans at SBI, PNB, Bank of Baroda and Union Bank run up to 10 years, including a 6-month moratorium at SBI and PNB. Personal loans run 72 months at ICICI and 6 years at Tata Capital. On ₹2 lakh, a 10-year scheme loan at 5.75% has an EMI of about ₹2,195, against ₹3,806 for a 6-year personal loan at 10.99%.
Variable 3, Processing fee. SBI, PNB and Bank of Baroda charge no processing fee on their scheme loans (Union Bank charges 0.50% plus GST above ₹2 lakh). Personal loans charge a one-time fee at disbursal: up to 2% at ICICI and up to 4.13% at Bajaj Finance. On a ₹2 lakh loan that is up to ₹4,000 at 2% and about ₹8,260 at 4.13%.
Variable 4, Documentation. Personal loans need only KYC and an income document (salary slip or ITR). Scheme loans need KYC and the electricity bill, plus income documents above ₹2 lakh, registration on pmsuryaghar.gov.in, an application on the JanSamarth portal, and the vendor’s quotation and feasibility reports. If you haven’t shortlisted a vendor or started the portal process, expect a delay while these are collected.
Variable 5, Vendor restriction. This is the dealbreaker for some buyers. A scheme loan is paid only to a vendor registered on the PM Surya Ghar national portal. A personal loan has zero vendor restriction. The trap: many homeowners interpret “no vendor restriction” as freedom, until they realise that the same restriction is what protects subsidy eligibility. Picking an unregistered installer with personal loan money forfeits the ₹78,000 PM Suryaghar subsidy, which dwarfs any interest saving.
Solar Loan, Lower Rate, Portal Vendor Restriction
In India, the dedicated rooftop solar loans for households are the PM Surya Ghar loans from public sector banks: the lender pays the loan and your margin directly to the vendor. SBI’s Surya Ghar loan is listed at 5.75% up to ₹2 lakh and 7.90% up to ₹6 lakh; Union Bank and Bank of Baroda also list 5.75% up to ₹2 lakh; PNB and Canara Bank run similar schemes. The private lenders often named for “solar loans” do not list one: HDFC Bank finances solar through home improvement loans and top-ups, while ICICI Bank, Tata Capital and Bajaj Finance offer general personal loans. The Indian Renewable Energy Development Agency (IREDA) lends only to large commercial rooftop projects of 1,000 kWp or more.
The structural advantages of a scheme loan flow from three sources. First, policy support: MNRE’s guidelines envisage low-interest loans near the benchmark rate for systems up to 3 kW, and PNB classifies these loans under priority sector lending. Second, security: the bank holds the solar system under hypothecation, so it needs no property mortgage. Third, subsidy linkage: under the MNRE guidelines, when you finance through a scheme loan the subsidy is credited to the loan account. It is processed within 15 days of DISCOM approval and released when you redeem the e-token on the portal.
The restrictions are equally structural. The bank pays only a vendor registered on the PM Surya Ghar national portal, after the feasibility reports mandated by MNRE are submitted. The subsidy itself needs the same registered vendor and DCR modules, so for any buyer planning to claim the ₹78,000 the restriction is invisible: they were going to use a registered vendor anyway.
SBI does not publish an approval timeline, and branches vary. Pre-approved personal loans from your own bank are usually faster. Compare the specific lenders side by side in our SBI Surya Ghar loan guide, ICICI solar loan guide, Tata Capital solar loan guide, and Bajaj Finserv solar loan guide.
Personal Loan, Higher Rate, Any Vendor
A personal loan is an unsecured consumer credit product disbursed against income and credit score alone. It carries no end-use restriction, you can spend the money on a wedding, a medical bill, or a solar installation. In October 2026, ICICI Bank lists personal loan rates of 9.99% to 16.50% (fixed), Tata Capital advertises from 10.99%, and Bajaj Finance lists 10% to 30.5%; the rate you get depends on your credit profile.
The advantages of a personal loan are speed and flexibility. Pre-approved offers from a bank where you already hold an account can disburse quickly with fully digital onboarding. Documentation is limited to PAN (Permanent Account Number), Aadhaar, salary slip, and bank statement, no installer quote, no Suryaghar application reference, no ALMM verification. For a buyer who has already shortlisted an installer and wants the panel on the roof in three weeks, a personal loan can shorten the financing path to a few days.
The disadvantages are equally real. The rate gap translates to roughly ₹30,000 to ₹49,000 of extra interest over a 5-year, ₹2 lakh loan (10.99% to 14% against 5.75%). Tenure is shorter (72 months at ICICI, 6 years at Tata Capital), which keeps the monthly EMI higher than a 10-year scheme loan. Processing fees are higher (up to 2% at ICICI, up to 4.13% at Bajaj Finance), and fixed-rate personal loans can carry foreclosure charges: ICICI charges 3% of the outstanding principal until 24 EMIs are paid.
The most dangerous trap with personal loans is the subsidy forfeiture risk. A personal loan has no vendor restriction, which means it can fund an installer who is not registered on the national portal. Some buyers, confused by this freedom, pick a cheaper unregistered installer to offset the higher interest rate, then discover the ₹78,000 PM Suryaghar subsidy is unavailable. The net financial outcome is dramatically worse: higher interest on the loan plus ₹78,000 of forfeited subsidy. Always confirm the installer is a vendor registered on the PM Surya Ghar national portal before signing a personal loan, regardless of which lender you’re using.
Get a free solar financing review. Our team maps your CIBIL score, salary band, and target system size against the live rate cards from SBI, HDFC, ICICI, Tata Capital, and Bajaj, and tells you whether a solar loan or personal loan saves more rupees over the life of the loan. Get your free quote →
EMI Side-by-Side for 5 kW Solar
Numbers settle this discussion faster than commentary. Below is the EMI comparison on a ₹2 lakh principal, the most common loan size in our 2026 installation book. The scheme rate is SBI’s listed 5.75% for loans up to ₹2 lakh; the personal loan rates are Tata Capital’s advertised starting rate (10.99%) and two higher points within the published ranges.
| Scenario | Loan amount | Rate | Tenure | Monthly EMI | Total interest | Total payable |
|---|---|---|---|---|---|---|
| PM Surya Ghar loan (SBI) | ₹2,00,000 | 5.75% p.a. | 60 months | ₹3,843 | ₹30,601 | ₹2,30,601 |
| PM Surya Ghar loan, longer tenure | ₹2,00,000 | 5.75% p.a. | 120 months | ₹2,195 | ₹63,446 | ₹2,63,446 |
| Personal loan (starting rate) | ₹2,00,000 | 10.99% p.a. | 60 months | ₹4,347 | ₹60,849 | ₹2,60,849 |
| Personal loan | ₹2,00,000 | 14% p.a. | 60 months | ₹4,654 | ₹79,219 | ₹2,79,219 |
| Personal loan | ₹2,00,000 | 16% p.a. | 60 months | ₹4,864 | ₹91,817 | ₹2,91,817 |
The cleanest comparison is row 1 vs row 3, same ₹2 lakh principal, same 60-month tenure, only the rate differs. The scheme loan saves ₹30,248 in total interest, or roughly ₹504 per month of cash flow. Stretch the scheme loan to 120 months (row 2) and the monthly EMI drops to ₹2,195, ₹2,152 less than the personal loan EMI, but total interest rises to ₹63,446. Most borrowers should pick row 1 for the lowest absolute cost; pick row 2 only if monthly cash flow is the binding constraint. The SBI figures ignore the 6-month moratorium, during which interest accrues.
The 16% personal loan in row 5 is the worst outcome for nearly every buyer profile. Higher personal loan rates go to borrowers with weaker credit, but SBI sets no minimum CIBIL score for scheme loans up to ₹2 lakh, so a bank scheme loan should always be the starting point. See the full breakdown by system size in our solar loan EMI for 3 kW / 5 kW / 10 kW guide.
For buyers who can’t bring a down payment, our zero-down-payment solar guide covers the options. SBI’s scheme loan needs a margin of at least 10% (PNB, Union Bank and Bank of Baroda ask 20% above ₹2 lakh), so 100% financing usually means a personal loan from a lender such as Tata Capital, at a higher rate.
When Personal Loan Actually Wins
The honest answer to “solar loan or personal loan” isn’t a universal verdict, there are a few specific situations where the personal loan is genuinely the better choice, and pretending otherwise would mislead borrowers. Here’s when to break the default rule.
| Situation | Why personal loan wins |
|---|---|
| No rooftop rights on the building | Scheme loans need rooftop rights (and, at PNB, ownership of the property); a personal loan does not |
| Loan needed above ₹6 lakh | Scheme loans cap at ₹6 lakh for systems up to 10 kW (Union Bank goes to ₹15 lakh only with a home loan) |
| Urgency | Scheme loans go through the national portal, JanSamarth and branch verification; a pre-approved personal loan from your own bank can be faster |
| Already-installed system from an unregistered vendor | Scheme loans pay only portal-registered vendors for new installations; a personal loan has no such condition |
Small loans favour the scheme loan. It is a common belief that small amounts suit a personal loan. In fact, SBI’s scheme loan has no minimum amount and, up to ₹2 lakh, needs no income proof or minimum CIBIL score, while personal loans start at ₹40,000 (Tata Capital, Bajaj Finance) or ₹50,000 (ICICI).
Weak documentation. Self-employed buyers without consistent ITR filings, gig workers, or small-business owners with cash-heavy income can still use the scheme loan up to ₹2 lakh, where SBI, PNB and Bank of Baroda ask for no income documents. Above ₹2 lakh, banks want ITRs (two years at SBI and Bank of Baroda, one year at PNB); a personal loan lender may assess the file differently, at a higher rate.
True urgency. Some buyers face seasonal triggers, pre-monsoon roof commissioning or the end of a financial year tax window. If money must arrive within days, a pre-approved personal loan from an existing bank relationship is the product most likely to deliver. The scheme loan cannot skip the portal registration and feasibility checks.
In each of these cases, always still pick a vendor registered on the PM Surya Ghar national portal even though the personal loan doesn’t require it. That preserves the ₹78,000 Suryaghar subsidy, which is independent of the loan category.
Common Mistakes Borrowers Make Choosing
These are the six recurring errors we see across our financing consultations in 2026. Each one costs the borrower real money, sometimes more than the entire interest gap the loan category was supposed to optimise. Run through this list before you sign.
Solar Loan vs Personal Loan, Quick Verdict
- + Lower interest rate (5.75% up to ₹2 lakh; 7.90% to ₹6 lakh at SBI)
- + Tenure up to 120 months
- + Nil processing fee at SBI, PNB and Bank of Baroda
- + Subsidy credited to the loan account
- + Forces a portal-registered vendor and scheme-compliant ([BIS](/glossary/bis), DCR) components
- + Saves about ₹30K–₹49K interest on ₹2 lakh over 5 years
- - Portal, JanSamarth and branch steps take time
- - Locked into vendors registered on the national portal
- - Needs vendor quotation, feasibility reports and portal registration
- - Capped at ₹6 lakh, systems up to 10 kW
- - Salary/ITR documentation needed above ₹2 lakh
- - Hypothecation creates a charge on the system
- + Fast disbursal for pre-approved offers
- + KYC + income documents only
- + No vendor or component restriction
- + Fully digital onboarding
- + No rooftop-rights condition
- + Higher amounts (up to ₹35 lakh at Tata Capital)
- - Higher interest rate (ICICI 9.99%–16.50%; Tata Capital from 10.99%)
- - Tenure usually 6 years or less
- - Processing fee (up to 2% at ICICI, up to 4.13% at Bajaj Finance)
- - Risk of subsidy forfeiture via an unregistered installer
- - Foreclosure charges on fixed-rate loans (3% until 24 EMIs at ICICI)
- - Costs about ₹30K extra interest on ₹2L over 5 years at 10.99%
Verdict. For any rooftop solar buyer with rooftop rights who needs ₹6 lakh or less and can wait for the portal and branch steps, a PM Surya Ghar bank loan is the better choice, every time. The rate gap (5.75% to 7.90% against 10% and up), the 10-year tenure, the nil processing fee at SBI, PNB and Bank of Baroda, and the subsidy credited straight to the loan account make it the cheaper money. Personal loans win only when you lack rooftop rights, need more than ₹6 lakh, or face hard urgency. And in all cases, always use a vendor registered on the PM Surya Ghar national portal regardless of loan category, the subsidy depends on it.
How Heaven Green Energy Coordinates Loan Selection
Heaven Green Energy is MNRE-empanelled across Rajasthan and helps buyers apply with the main lenders: State Bank of India and other PSU banks for PM Surya Ghar loans, HDFC Bank for home loan top-ups, and ICICI Bank, Tata Capital, and Bajaj Finance for personal loans. Our finance desk reviews each buyer’s CIBIL score, salary documentation, and target system size, then lays out each lender’s published rates so you can compare like-for-like.
What we handle on the financing side, in sequence:
- CIBIL and rate profiling: pull your score (with consent) and map it to the rate cards each lender will actually quote, not the headline marketing rate.
- Solar loan paperwork: installer quote, MNRE empanelment certificate, ALMM listing for panels, BIS certification for inverter, and PM Suryaghar reference number all bundled into the loan file.
- Subsidy-against-principal request: drafted at sanction so the ₹78,000 DBT lands directly on the loan balance, not your savings account.
- Personal loan fallback: if solar loan timelines don’t fit, we coordinate a pre-approved personal loan with a bank where you already have a relationship.
- Documentation pre-check: eliminates the rejection patterns we see most often (income mismatch, address inconsistency, CIBIL old-write-off flags).
Explore the services and tools that fit your buying stage:
- Residential Solar: 1 to 10 kW rooftop systems with full PM Suryaghar and loan coordination.
- Solar Calculator: model your subsidy, loan EMI, and payback for your bill in under 60 seconds.
- Channel Partner Programme: for installers and dealers who want to offer financed solar to their customers.
- Contact Us: speak with the finance desk for a no-obligation rate comparison.
For the deeper lender-specific reviews, see our HDFC solar loan guide, SBI Surya Ghar loan guide, ICICI solar loan guide, Tata Capital solar loan guide, and Bajaj Finserv solar loan guide.
Frequently Asked Questions
Is a solar loan always cheaper than a personal loan for rooftop solar?
For nearly every borrower who can use the PM Surya Ghar scheme, yes. SBI lists 5.75% up to ₹2 lakh and 7.90% up to ₹6 lakh, while personal loans start around 10%. On ₹2 lakh over 5 years, 5.75% costs ₹30,601 in interest against ₹60,849 at 10.99% and ₹79,219 at 14%. The exceptions are buyers without rooftop rights, loans above ₹6 lakh, and situations where money must arrive faster than the portal and branch process allows.
Can I get a personal loan and still claim the ₹78,000 PM Suryaghar subsidy?
Yes, the PM Suryaghar subsidy is tied to the installer and components, not to the loan type. As long as your installer is a vendor registered on the PM Surya Ghar national portal and the system uses DCR (domestically manufactured) modules, the ₹78,000 subsidy is paid regardless of whether you funded the system through a scheme loan, personal loan, or your own savings. With a personal loan it goes to the bank account you submitted on the portal. The trap to avoid is using personal loan freedom to pick an unregistered installer, that forfeits the subsidy.
What CIBIL score do I need for a solar loan in 2026?
Less than most people think. SBI’s Surya Ghar loan sets no minimum CIBIL score for loans up to ₹2 lakh and asks for 650 above that, with no defaults or write-offs. PNB, Union Bank and Canara Bank list a score of 680, and PNB and Canara also accept applicants with no credit history; Union Bank charges a slightly higher rate below 750 on loans above ₹2 lakh. For personal loans, Bajaj Finance lists 650 or higher, and ICICI publishes no fixed cut-off.
How long does a solar loan take to disburse compared to a personal loan?
Banks do not publish fixed timelines for scheme loans, and branches vary. The scheme loan needs registration on pmsuryaghar.gov.in, an application on the JanSamarth portal, the vendor’s feasibility reports and branch verification, and the bank then pays the vendor directly. A pre-approved personal loan from your own bank is usually faster. If timing isn’t critical, the scheme loan’s lower rate is worth the wait.
Can the PM Suryaghar subsidy be applied directly to my loan balance?
Yes, with a PM Surya Ghar scheme loan. Under the MNRE guidelines, when your portal profile includes the loan account details, the subsidy is credited to the loan account on redemption of the e-token; if it exceeds the outstanding balance, the rest goes to your bank account. It is processed within 15 days of DISCOM approval. SBI, PNB, Union Bank and Bank of Baroda all ask for the loan account number for this. With a personal loan or a home loan top-up, the subsidy goes to the bank account you submitted on the portal, and you prepay yourself.
What’s the maximum tenure available on a solar loan in 2026?
PM Surya Ghar bank loans run up to 120 months (10 years): SBI and PNB include a 6-month moratorium in that, and Bank of Baroda and Union Bank also list 10 years. Personal loans are shorter: 72 months at ICICI and 6 years at Tata Capital (Bajaj Finance lists up to 108 months, at higher rates). On ₹2 lakh at 5.75%, a 120-month tenure cuts the EMI from ₹3,843 (60 months) to ₹2,195, useful if cash flow is tight.
Are solar loans tax deductible in India?
Solar loans for residential rooftop systems do not qualify for a specific interest deduction under the current Income Tax Act, but the system itself may qualify for accelerated depreciation if installed at a commercial property. For salaried residential buyers, the financial benefit is captured in the lower interest rate and the PM Suryaghar subsidy, not in tax deductions. Self-employed buyers with a home-office component may be able to claim partial depreciation through their business return, consult a chartered accountant for specifics.
Should I take the maximum tenure on a solar loan to lower my EMI?
Only if monthly cash flow is genuinely tight. The longer the tenure, the higher the total interest you pay: at 5.75%, stretching a ₹2 lakh loan from 60 months to 120 months drops the EMI from ₹3,843 to ₹2,195 (₹1,648 cash flow relief per month) but raises total interest from ₹30,601 to ₹63,446 (₹32,845 extra cost). For buyers with stable salary, a shorter tenure is the right default. For borrowers with variable income or other large EMIs already, the longer option is the cash flow safety valve, and SBI charges no prepayment penalty if you later close early.
What happens if I lose my job during a solar loan tenure?
Solar loans don’t carry employment-linked acceleration clauses, your EMI obligation continues regardless of employment status. If you fall behind, talk to the lender early about restructuring options; the bank’s security is the hypothecation charge on the solar system. Maintain 3 to 6 months of EMI as a reserve and you’ll absorb most income disruptions without distress.
Can I prepay a solar loan without penalty?
Yes, on floating-rate loans. Under RBI’s pre-payment charges directions, regulated lenders cannot levy pre-payment charges on floating-rate loans to individuals for non-business purposes, and SBI states there is no prepayment penalty on its Surya Ghar loan. Fixed-rate personal loans are different: ICICI charges 3% of the outstanding principal until 24 EMIs are paid, and Bajaj Finance lists up to 4.72% on full prepayment of a term loan. If you expect a windfall (bonus, ITR refund, asset sale) soon, confirm the prepayment clause before signing, it’s the most overlooked term in the loan agreement.