Four questions before you look at a monthly payment
Several contracts can shrink the cash due when panels go up: a lease, a power-purchase deal, PACE in some localities, a home-equity line, an installer-arranged loan, or an ordinary personal loan. The monthly figures can look alike. Ownership and the amount financed often do not.
Ask for an itemized proposal covering panels, inverters, racking, electrical work, permits, labor, interconnection, roof work, and any battery, plus what a later roof repair would cost if the array must come off. Keep work outside that contract, such as a service upgrade, on the same sheet. The Federal Trade Commission urges shoppers to compare proposals and to doubt claims that solar is free or paid by a government program. Before a payment comparison, write the installed cash price, the principal under each credit option, who owns the equipment, and what happens if you sell, prepay, or replace the roof.
The 2026 homeowner credit, and why you do not borrow the savings
Older pitches still assume a federal credit that does not cover a new homeowner installation. IRS guidance says the Residential Clean Energy Credit, section 25D, does not apply to qualified property placed in service after December 31, 2025. A contract, a deposit, or an equipment purchase before that date does not by itself preserve the credit for a later installation. For a system placed in service in 2026, do not budget the former residential credit. Confirm current IRS instructions before you file.
State, local, Tribal, utility, or manufacturer programs may remain. Check that the program is open, that you, the equipment, and the contractor qualify, that the application order is right, that funds remain, and when money would arrive. A later rebate does not cut the installation invoice unless the contract says it does. The loan payment is owed. A tax result and a bill estimate are not cash. Shade, weather, rates, and how much power you use can all shrink the savings.
Cash price, dealer markups, and a personal loan beside an installer loan
The Consumer Financial Protection Bureau has described solar loans in which dealer, program, or finance fees lifted the principal above the cash price of the same system. Ask for both prices, whether the price changes with the loan, every fee inside the principal, and the creditor's disclosure. A low stated rate on a larger principal can cost more than a higher APR on the cash price. The CFPB has also flagged hidden markups and payment structures that assume a tax credit.
The installer can help with paperwork and still not be the creditor. Ask whether the note is secured, whether a lien hits the panels, whether the payment stays fixed, and what changes if a large voluntary payment built into the schedule is skipped, or if installation is canceled. A personal loan is a separate product and may not allow solar as a use. A home-equity loan or line uses the house and can carry a variable rate. If the roof, the electrical work, the array, and a battery are financed together, keep each price visible.
Hypothetical household. Not a typical fee and not a rate. The Morales family is quoted $18,400 cash. Installer financing shows a principal of $22,900. That $4,500 gap counts before interest. An outside loan that paid the cash price would still need its own APR, fees, term, and total repayment.
A lease, a PPA, and PACE are different promises
On a solar lease you generally do not own the system. The FTC's usual picture is a company that installs the equipment while you pay to use it for a long term. Payments may rise. Maintenance, insurance, roof work, a home sale, a buyout, and the ending are contract terms. Buying with a loan is financing ownership, subject to any lien. Leasing is paying to use equipment someone else owns.
A power purchase agreement is also third-party ownership: you buy the electricity the system produces. Read the price per unit, whether it climbs, the length, any minimum, maintenance, buyout, and what a sale requires. A PPA is not a personal loan.
PACE, where offered, is generally repaid through the property tax bill, not like an unsecured personal loan. A CFPB residential PACE rule took effect March 1, 2026. Covered transactions get mortgage-style disclosures and ability-to-repay checks. Read the amount, duration, sale or refinance effects, and how it sits next to your mortgage.
Selling the house, the next roof, and a battery
A sale may mean paying off a loan, asking a buyer to assume it if allowed, transferring a lease or PPA only if the provider approves, a buyout, or clearing a lien. Do not assume the contract follows the deed. Read that section before you sign.
Panels often come off for roof work. Ask who may remove and reinstall them, the cost, whether another contractor voids a warranty, and whether a lease company must approve. Do not finance a roof only because a solar pitch says so. If a battery is included, separate its price, warranty, and any incentive. An ended federal homeowner credit does not revive because batteries once qualified.
A comparison sheet and the pitches that should slow you down
On one page, record cash price, inclusions, the creditor, product type, financed amount, APR, fees, payment, term, total repayment, fixed or variable rate, prepayment, any lien, and any payment that jumps if a large prepayment is skipped. Add who owns, maintains, and insures the system, plus the roof and sale process. The financing gap is confirmed cash price, minus an incentive that actually reduces what you pay now, minus cash you will use.
Slow down if the cash price is withheld, the creditor is unnamed, only the monthly payment is discussed, a 2026 federal homeowner credit is described as certain, the system is called free government solar, a specific utility saving is promised, or nobody can explain a principal above the cash price. A personal loan belongs in the comparison when you can pay the cash price, the use is allowed, and the payment fits even if savings disappoint.
FAQ
Does a 2026 homeowner installation still get the federal residential credit?
Under current IRS guidance, section 25D does not cover property placed in service after December 31, 2025. Do not assume that former credit. Other incentives have to be checked separately.
Is an installer solar loan the same as a personal loan?
Not necessarily. One is often arranged at the sale. A personal loan is separate credit and may bar solar as a use. Compare creditor, principal, APR, fees, and the project price.
Why can the financed amount exceed the cash price?
The CFPB has documented solar loans where dealer or finance fees raised principal above the cash price. Get both figures and every dollar of difference.
How does a lease differ from a PPA?
A lease is generally a fee to use a system someone else owns. A PPA is generally a charge for the power that system produces. Read escalators, transfer, and buyout terms on your contract.
If the panels will "pay for themselves," is the payment covered?
No. Savings are estimates. The contractual payment is still due if production or rates fall short.
Sources
Confirm section 25D in current IRS instructions, and read CFPB and FTC consumer pages on solar loans, residential PACE, and free-solar claims before you sign.
Last reviewed: October 31, 2026.