Solar Financing & ROI: How Your Power Bill Pays Your Solar Loan

One of the biggest misconceptions about rooftop solar is that homeowners must pay large sums out of pocket. With the PM Surya Ghar initiative, public sector banks (SBI, Canara Bank, PNB, Bank of Baroda) offer collateral-free rooftop solar loans at interest rates as low as 7% p.a.

The EMI vs Bill Savings Equation

Consider a typical 3 kW residential setup in South 24 Parganas:

• Average Monthly Electricity Bill: ₹3,500/month (₹42,000 annually)
• Estimated Turnkey System Cost: ~₹2,10,000
• PM Surya Ghar Central Subsidy: ₹78,000 (Transferred directly to your DBT-linked bank account)
• Net Financed Amount: ~₹1,32,000
• 5-Year Bank EMI (approx @ 6% p.a.): ~₹2,550/month
• New Monthly Electricity Bill: ~₹300 to ₹500/month (Fixed meter charge)

Net result: Total outgo (EMI + remaining bill) is approximately ₹2,850 to ₹3,050/month—which is less than the old ₹3,500 electricity bill from Day 1. Once the loan is paid off in 5 years, electricity is essentially free for the remaining 20 years of the solar panel warranty.