Ways to Pay for Rooftop Solar: Savings, Loans and Subsidy

The money question behind every solar decision

For most families, the hardest part of going solar is finding a large sum of money in one go. A home system of a few kilowatts costs a significant amount compared with a monthly electricity bill, even when the savings are real and the payback is a few years. Decide how you will pay before you ask for quotations, and choose a route that does not strain your household budget.

There are three broad routes: paying from your own savings, borrowing, or a mix of the two, in each case with the government subsidy arriving later if you qualify. This guide explains how each works, what to compare and which traps to avoid. It is general information and not financial advice. We do not offer loans, and this site does not claim any financing partnership. Speak to your own bank or a qualified adviser about options that suit you.

Paying from savings

Paying from savings is the simplest route. You avoid interest, you own the system outright and your monthly saving on the electricity bill is entirely yours. The cost is that the money is no longer available for other needs, so keep an emergency fund separate and do not empty it for solar. A family without a cash cushion can be hurt by an unexpected medical or family expense, even if the system pays back in a few years.

If you pay from savings, agree the payment stages with the installer in writing. A common structure is a small advance at the start, a larger part on delivery of material and the balance after commissioning and net metering. Avoid paying the full amount before work begins. Keep a receipt for each payment, with the date, the amount, the mode of payment and the installer's signature.

• Keep an emergency fund aside before you commit.
• Pay in stages tied to work done, not everything in advance.
• Prefer bank transfer or cheque so that every payment leaves a record.
• Collect receipts and the final invoice with tax details.

How the subsidy fits in

For eligible households, the central subsidy under PM Surya Ghar: Muft Bijli Yojana reduces the net cost of a rooftop system. It is generally credited to the applicant's bank account after installation, inspection and verification, not before. So even with a subsidy, you normally need to pay the installer first and wait for the subsidy to arrive. The timing can vary, so ask the installer for a realistic timeline and plan your cash flow to wait for it.

The amounts depend on system size and are published on the official portal, and they can be revised, so check the current figures. Our PM Surya Ghar guide for Uttar Pradesh explains the process. Our document checklist lists what you need. Do not count on a subsidy you may not qualify for, and remember that commercial connections are not eligible for the residential subsidy.

Borrowing for solar: what to compare

Banks and financial institutions may offer loans for rooftop solar, sometimes as a special product and sometimes as a personal or home improvement loan. Terms differ from one lender to another and change over time, so ask for the current terms in writing. Do not rely on a figure quoted by a salesperson, and do not assume that any particular bank is tied to any installer.

Compare four things. The first is the interest rate and whether it is fixed or floating. The second is the tenure, which is how many years you will repay. The third is the fees, such as processing fees, prepayment charges and insurance. The fourth is the total you will repay over the loan, which is the real cost. A low monthly instalment over a very long tenure can cost much more in total than a higher instalment over a shorter one.

A simple test: does the saving cover the instalment

A practical way to judge a loan is to compare the monthly instalment with the monthly saving on your electricity bill. Suppose you expect to save around Rs 2,500 a month, and the instalment is Rs 2,076. Your cash outflow does not increase, because the saving more than covers the repayment, and after the loan ends the saving is entirely yours. If the instalment is much higher than the saving, you will need to find the difference from your other income every month.

Use a cautious estimate of savings, not the best case. Savings fall in cloudy and foggy months, and fixed charges remain on your bill. Our guide on how to calculate the payback period shows the method, and our article on reading your bill shows how to find your real units and rates. If you rely on the subsidy to reduce the loan amount, make sure the loan arrangement handles the timing, since the subsidy arrives later than the installer's payment.

Do not take a loan you could not repay if the savings turn out lower than expected. A system financed beyond your means becomes a burden even if it works well.

Bridging the gap until the subsidy arrives

Since the subsidy comes after commissioning, households sometimes need to bridge it. Options include using savings for the full amount and receiving the subsidy later, borrowing a part for a short time, or choosing a loan whose structure handles subsidy receipt. Ask the lender how the subsidy is treated: whether it can be used to prepay the loan, whether prepayment is allowed without penalty and whether the loan is sanctioned on the gross or the net cost.

Be wary of arrangements in which an installer or agent collects the subsidy on your behalf, or asks you to sign over your rights to it. The subsidy is for the applicant, and it should be credited to your own bank account. Read any document carefully, and refuse arrangements you do not understand.

Staying safe: fraud and pressure sales

Money offers attract fraudsters. Watch for these warning signs: promises of guaranteed loan approval, a demand for an advance fee to process a loan or subsidy, pressure to sign immediately, vague documents and a request for your bank card details, PIN or one-time passwords. A genuine lender or scheme will never ask for these.

Check any lender with its own official branch or website, and not through a link or phone number given by a salesperson. Check that the installer is real, has a local address and has completed work you can visit. Read every page before you sign, and take a copy home. If the terms are in a language you do not read well, ask someone you trust to read them to you.

• Never pay an agent to guarantee a loan or a subsidy.
• Never share your card PIN, passwords or one-time passwords.
• Verify the lender at its own branch or official website.
• Take your time; a genuine offer will still be there tomorrow.
• Keep copies of the loan agreement, the repayment schedule and all receipts.

Choosing what suits your household

The right route depends on the household. One with healthy savings and an emergency fund may prefer to pay in cash and avoid interest. A household with limited savings but stable income may find that a short, affordable loan lets them start saving on bills sooner, provided the instalment is covered by the saving. Some choose a mix: a part from savings and a smaller loan, to keep both interest and strain low.

Whatever you choose, get the system price, the subsidy position and the payment terms in writing, and compare at least two quotations. For help understanding the numbers for your home, use the quotation form on our home page and we will explain the estimate and your options in plain language.