Solar Financing Explained: Loan vs. Lease vs. PPA vs. Cash (2026)

Every solar offer is some version of these four. The first two mean you own the system; the last two mean a third party does. That ownership line is the single most important thing to understand before you compare prices, because it changes who gets the incentives, who handles repairs, and what happens when you move.

A solar loan can be a reasonable way to spread out the cost while still owning your system. But here's the part that catches people off guard: many low-rate, "$0-down" solar loans carry what's called a dealer fee (sometimes a finance or origination fee). It's the amount the installer pays the lender in exchange for offering you a low advertised APR — and that cost is usually passed straight into the price you finance.

These fees are often large — commonly somewhere in the range of 15% to 30% of the system price. That means a $0-down loan can quietly cost thousands more than the cash price for the exact same hardware on the exact same roof. The monthly payment looks friendly while the total climbs. A dealer fee isn't inherently improper, and it isn't necessarily hidden on purpose — but it should be disclosed, and it isn't always spelled out unless you ask.

The fix is simple and costs you nothing: ask for the cash price and the dealer fee in writing, as separate dollar amounts, before you compare anything. If an installer won't put the cash price next to the financed price, you have no way to tell how much the financing is actually adding.

Leases and PPAs are both "someone else owns the panels" arrangements, and they're where "free solar" and "$0 out of pocket" pitches usually come from. With a lease, you pay a set monthly amount to use the equipment. With a PPA, you pay for the electricity the system generates at an agreed per-kWh rate. Either way, a third party owns the hardware, not you.

Two features are worth reading closely. First, most leases and PPAs include an annual escalator — a clause that raises your payment or rate a small amount every year, often a few percent, for 20 years or more. A 3% yearly increase doesn't sound like much, but compounded over two decades it adds up meaningfully, and it's essentially a bet that your utility's rates will rise faster than the escalator. Second, because you don't own the system, you generally don't claim any tax incentives on it — the owner does.

None of this makes a lease or PPA automatically a bad choice. For someone who can't use tax incentives anyway and wants no upfront cost or maintenance responsibility, it can make sense. Just read the escalator, the term length, and the end-of-contract options before you decide.

Ownership matters most at two moments: when incentives are handed out, and when you sell your home. When you buy — cash or loan — you own the system and any incentives tied to it, and an owned system often adds to what buyers will pay for the house.

A lease or PPA is different at closing. Because the contract is attached to the system, a buyer usually has to qualify to assume the agreement and take over your payments, or you have to buy the contract out first so the home sells free and clear. Either path can slow or complicate a sale, and some buyers walk away from a home that comes with a 20-year obligation they didn't choose. If you might move within the contract term, read the transfer and buyout terms carefully before you sign — that fine print is easy to skip and expensive to discover later.

A lot of solar financing pitches were built around the 30% federal Residential Clean Energy Credit (Section 25D). That credit was terminated for systems placed in service after December 31, 2025, so most homeowners installing residential solar in 2026 can no longer claim it. If a loan or lease proposal shows "savings after tax credit" or a payback number that bakes in 30%, those figures may be off by thousands.

This hits each option differently. On a loan, buyers often planned to make a lump-sum payment with their credit to keep the monthly payment low; without the credit, that plan needs rethinking. On a lease or PPA, the system's owner — not you — is the party that would claim any available federal incentives, so a pitch that implies you personally benefit from a credit deserves a direct question. State, local, and utility incentives may still apply and vary widely by location; the DSIRE database at dsireusa.org is the best place to check yours. Confirm anything tax-related with a licensed tax professional and irs.gov before you rely on a number.

The way to cut through all of this is to force every offer onto the same footing: the cash price, before incentives, expressed as price per watt. That single number lets a $0-down loan and a cash quote for the same system finally sit side by side, with the dealer fee no longer hidden inside the sticker. As a rough anchor, cash prices nationally often land somewhere around $2.60 to $3.70 per watt before incentives, though fair ranges vary by state — so compare against your own state's typical range, not a single national figure.

Before you sign, get the items below in writing from each installer and compare them line for line. If you'd rather not untangle it by hand, you can run your quote through an independent check that pulls your price per watt, compares it to your state's benchmark, and hands you the exact questions to ask — including whether a dealer fee is buried in the financing.