Solar Loan EMI Calculator: Your Complete Guide to Financing Rooftop Solar in India
Ever stared at your electricity bill and wondered if the universe is playing a practical joke on you? You are not alone. Millions of Indian households watch their power bills climb every summer while the sun — free, abundant, and remarkably reliable — shines right on their rooftops.
The PM Surya Ghar: Muft Bijli Yojana turns that irony into opportunity. With government subsidies of up to ₹78,000 and bank loans starting at just 7% interest, installing rooftop solar has never made more financial sense. But navigating the numbers — subsidy calculations, EMI estimates, and bank comparisons — can feel like decoding a puzzle.
That is exactly why we built this Solar Loan EMI Calculator. No confusing spreadsheets. No guesswork. Just a few clicks to see your exact monthly payment.
Try the calculator above now, or keep reading to understand the scheme, the subsidy math, and which bank gives you the best deal.
What Is the PM Surya Ghar: Muft Bijli Yojana?
Launched in February 2024, the PM Surya Ghar: Muft Bijli Yojana (PMSGMBY) is the Government of India’s flagship rooftop solar scheme. It aims to equip one crore households with rooftop solar panels, targeting 30 GW of residential solar capacity.
The scheme provides Central Financial Assistance (CFA) — a direct subsidy — to reduce your upfront installation cost. Since its launch, India has added 9.56 GW of rooftop solar capacity as of March 2026, driven largely by this scheme.
The goal is simple: help households generate up to 300 units of free electricity every month. Combined with a solar loan, many homeowners find their monthly EMI is lower than their old electricity bill. In other words, you start saving from day one.
How the Subsidy Works — Real Numbers, No Guesswork
This is where most people get confused, so let us break it down simply.
Subsidy Structure for Individual Households
The CFA is calculated based on your system’s capacity, up to 3 kWp:
| System Capacity | Subsidy Rate | Maximum Subsidy |
|---|---|---|
| First 2 kWp | ₹30,000 per kWp | ₹60,000 |
| Additional 1 kWp (2–3 kWp) | ₹18,000 per kWp | ₹18,000 |
| Total Maximum CFA | — | ₹78,000 |
For systems above 3 kWp, the subsidy is capped at ₹78,000 — you get the same amount whether you install 3 kW or 5 kW.
Special Category States and Union Territories
If you live in a special category state or union territory (such as Himachal Pradesh, Uttarakhand, Jammu & Kashmir, or the North-Eastern states), the CFA is slightly higher: ₹33,000 per kW for the first 2 kW and ₹19,800 per kW for the next 1 kW.
Subsidy Disbursement: How You Actually Get the Money
The subsidy is paid directly to your bank account within approximately 30 days after your DISCOM uploads the commissioning report to the national portal. You do not need to chase anyone — the process is largely automated.
How the Moratorium Period Works
Most solar loans under PM Surya Ghar include a 6-month moratorium period from the date of disbursement.
During these six months, you pay only the interest portion — not the principal. This gives you breathing room while the system gets installed, commissioned, and the subsidy gets credited. Once the moratorium ends, your regular EMI payments begin for the remaining tenure.
If you choose to apply your subsidy as a lump-sum prepayment (use our calculator’s toggle to model this), you can significantly reduce your outstanding principal — and your EMI gets recalculated downward. Many homeowners find this strategy cuts their total interest by thousands of rupees.
Real Installation Costs
How much does a rooftop solar system actually cost? Here are the numbers, verified by industry sources:
A typical 2 kW–3 kW residential rooftop solar system now costs between ₹108,000 and ₹125,000 after the GST reduction in September 2025, which brought the tax rate on solar components down to 5%. Before the GST cut, the same system cost between ₹120,000 and ₹140,000 — so you are already saving ₹8,000–₹12,000 just from the tax change.
The MNRE benchmark cost used for subsidy calculations is approximately ₹45,000–₹50,000 per kW for grid-connected rooftop systems in 2025–26. However, actual market prices vary by state, installer, and component quality.
A Realistic Example: 3 kW System
| Component | Amount |
|---|---|
| System cost (3 kW) | ₹1,35,000 |
| PM Surya Ghar subsidy | −₹78,000 |
| Down payment (10%) | −₹13,500 |
| Loan amount | ₹43,500 |
| Monthly EMI (7 years @ 7.5%) | ~₹750 |
| Average monthly electricity saving | ~₹1,500–₹1,800 |
| Net monthly gain | ₹750–₹1,050 in your pocket |
A 3 kW system generates 3,500–4,000 units annually, saving ₹18,000–₹22,000 per year depending on your state’s tariff.
Yes, you read that correctly. Your solar system can literally pay for itself while putting extra money in your pocket every month.
How to Apply for a Solar Loan — The JanSamarth Portal
The government has streamlined the entire process through the JanSamarth Portal (jansamarth.in), a digital platform that connects you with multiple lenders under one roof.
Step-by-Step Application Process
- Register on the PM Surya Ghar Portal — Visit pmsuryaghar.gov.in and complete your registration. This is mandatory before applying for any loan.
- Visit the JanSamarth Portal — Go to jansamarth.in and navigate to the solar loan section.
- Check Eligibility — Answer a few questions, and the portal automatically suggests suitable schemes.
- Select Your Lender — Choose from multiple public and private banks offering solar loans.
- Upload Documents — You typically need your Aadhaar card, latest electricity bill, and proof of roof ownership.
- Get Digital Approval — Loans are processed digitally, often with instant in-principle sanction.
The entire process is digital, collateral-free for systems up to 3 kW, and most banks require only 10% margin money for smaller systems.
As of October 2025, public sector banks had sanctioned loans worth ₹109 billion (approximately ₹10,900 crore) under the PM Surya Ghar scheme, with over half a million beneficiaries securing approvals.
Smart Loan Strategies — What the Banks Do Not Tell You
Strategy 1: Finance Post-Subsidy (Smaller Loan)
If you can manage the upfront cost temporarily, finance only the post-subsidy amount. You borrow less, pay less interest, and your EMI stays low from day one.
Strategy 2: Take the Full Loan, Prepay with Subsidy
Borrow the entire system cost, then when the ₹78,000 subsidy lands in your account (typically within 30 days of commissioning), use it as a lump-sum principal prepayment. Your outstanding balance drops sharply, and the bank recalculates your EMI downward.
Why this works: During the first 6-month moratorium, you pay only interest. By month 7, your subsidy has arrived. You make the lump-sum payment, and the remaining 6.5 years of EMI shrink dramatically. Use our calculator above to model both strategies and see the exact difference.
Strategy 3: Match EMI to Your Electricity Bill
A clever approach many homeowners use: choose a loan tenure where your EMI roughly equals your current monthly electricity bill. Since the solar system eliminates or drastically reduces that bill, your net monthly outflow stays the same — except now you are building an asset instead of just paying a utility. After the loan ends, your electricity is essentially free.
Frequently Asked Questions
Q: Do I need collateral for a solar loan?
No. For residential systems up to 3 kW, loans under PM Surya Ghar are collateral-free. You only need to hypothecate the solar assets being financed.
Q: What is the minimum CIBIL score required?
Most banks require a CIBIL score of 680 or above. Some banks, like Indian Bank, also consider applicants with no credit history (NTC).
Q: Can I apply if I am not an existing customer of the bank?
Yes. While existing customers may get preferential rates (0.25–0.50% lower), all eligible Indian residents can apply for solar loans through the JanSamarth portal.
Q: Is there a prepayment penalty?
No. Most banks, including Indian Bank, explicitly state “no pre-payment penalty” on solar loans. You can repay early without any charges.
Q: How long does the entire process take?
From application to disbursement, most banks process solar loans within 15 days. The installation itself typically takes 1–2 weeks, and subsidy credit follows within 30 days of commissioning.
Q: Does the subsidy cover the full system cost?
No. The maximum subsidy is ₹78,000 for a 3 kW system, while the system cost ranges from approximately ₹1,08,000–₹1,35,000. The subsidy covers roughly 55–70% of the total cost, and the remainder can be financed through a loan.
Conclusion
India is adding rooftop solar at record pace — 9.56 GW since the PM Surya Ghar scheme launched, with 26.75 GW of grid-connected rooftop capacity as of April 2026. Banks have committed over ₹10,000 crore in loans. Module prices have fallen to historic lows. The GST on solar components sits at just 5%.
The financial case has never been stronger. Your electricity bill is not going to get cheaper — but with a well-structured solar loan, you can turn that monthly expense into a wealth-building asset.
Use the calculator above. Plug in your numbers. Try both strategies. See exactly what you will pay — and what you will save.
Disclaimer: This calculator and article provide estimates for informational purposes only. Actual interest rates, subsidy amounts, and loan terms vary based on your bank, credit profile, location, and system configuration. Consult your bank and a registered solar installer for precise quotations. Always verify the latest PM Surya Ghar guidelines on pmsuryaghar.gov.in.