Solar Financing in 2026: Cash vs Loan vs Lease vs PPA

A salesperson leaves two numbers on your kitchen table. One is a cash price for the system, around $29,000 before the federal credit. The other reads "$0 down, $121 a month," and it sounds painless next to a five-figure check. You look at both and cannot say which one costs less, because they are not written in the same units. The cash figure is a purchase. The monthly figure could be a loan, a lease, or a power purchase agreement, and each of those is a different deal with a different owner, a different tax outcome, and a different story when you sell the house.

This post stays on one question. Not whether solar saves money, and not how fast it pays back, but how you pay for it and what each payment structure does to the value you keep. The national average residential price runs about $2.58 per watt before incentives, so the hardware on your roof costs roughly the same no matter how you finance it (EnergySage). What changes between cash, loan, lease, and PPA is who owns that hardware, who banks the 30% federal credit, and how much you hand over across 25 years.

The two offers on your kitchen table

Here is why the comparison feels rigged. A cash price is a single number you can see all of. A monthly payment hides its total behind a small, friendly figure, and $121 a month for 25 years is $36,300 before you count anything else. The dealer knows the monthly number lands softer, so that is the one they lead with.

The trap is answering the wrong question. "Which has the lower payment this month" is easy. "Which keeps more money in my pocket over the life of the system" is the one that matters, and the two answers often point in opposite directions. A lease can beat cash on month one and lose badly by year 25 (DOE).

So before anything else, find out what the monthly offer actually is. Ask the salesperson one direct question: is this a loan I pay off and own, or a lease or PPA where you keep the panels? Everything downstream depends on that answer, and a vague reply is itself a red flag worth pausing on. A reputable rep will give you a one-word answer and then show you the paperwork that backs it up. If the reply wanders into how low the payment is, you have learned something about the offer already.

Four ways to pay, in plain terms

There are four common structures, and they split cleanly into two camps.

Cash means you buy the system outright. You own it the day it switches on, and you claim every incentive it earns (IRS).

A solar loan also makes you the owner. A lender fronts the cost, you repay it with interest, and the panels are yours from day one even though you did not pay in full. Most "$0 down" pitches are loans (EnergySage).

A lease is a rental. A third party owns the panels on your roof, and you pay a fixed monthly amount to use them, often with a small yearly increase, called an escalator, written into the contract.

A PPA, or power purchase agreement, sits close to a lease but gets priced differently. Instead of a flat rental, you pay a per-kilowatt-hour rate for the electricity the system produces. The provider owns the equipment and sells you its output (DOE).

Cash and loan put you in the owner's chair. Lease and PPA make you a customer of whoever owns your roof's panels. That one distinction drives nearly everything below, so hold onto it.

Ownership is the fork in the road

Ownership is not a technicality. It decides who gets the tax credit, who claims any state rebate, who holds an asset worth something at resale, and who pays nothing for power once the system is paid off.

When you own, the panels are equipment you control. After a loan is retired, your electricity is close to free for the remaining warranty years, which commonly run to about 25 (Consumer Reports). Every utility rate increase after that point works in your favor, because you already own the thing making your power while your neighbors keep buying from the grid at rising prices (EIA).

When you lease or sign a PPA, you never cross that line. The monthly payment continues for the length of the contract, often 20 to 25 years, and it frequently climbs a little each year under the escalator. You get a lower bill than the utility would charge, but you do not get to the point where power costs nothing, because you are renting the hardware the whole time (DOE).

Neither camp is automatically wrong. A homeowner with no tax liability and no cash might genuinely prefer a lease. But the choice should be made with the ownership trade in full view, not buried under a monthly number.

Who actually keeps the 30% tax credit

The federal Residential Clean Energy Credit is worth 30% of the system cost, and it goes to whoever owns the equipment (IRS). On a $29,000 system that is about $8,700. If you pay cash or take a loan, that $8,700 is yours, claimed on your federal taxes for the year the system is placed in service.

If you lease or sign a PPA, the provider owns the panels, so the provider claims the credit. You do not see that $8,700 as a tax benefit. In theory the company passes some of its value back to you through a lower monthly rate, but you are trusting their math, and you cannot verify a number that never appears on your own return.

If you lease your system or sign a power purchase agreement, you are not the owner of the equipment, so the third party that owns it claims the federal tax credit rather than you.

Paraphrased from EnergySage, Federal Solar Tax Credit Explained

One detail decides whether the credit is real money for you. It is nonrefundable, which means it offsets federal taxes you owe and does not arrive as a check if you owe nothing. Any unused portion carries forward to later years (IRS). So the ownership advantage only lands if your tax situation lets you absorb the credit. A buyer with little or no tax liability should weigh that honestly before assuming cash or a loan wins (EnergySage).

The dealer fee hiding inside "$0 down"

A loan keeps you as the owner, so it keeps the credit, which makes it the usual middle path between cash and a lease. There is a catch worth knowing before you sign. Many solar loans, especially the low-APR and "$0 down" kind, carry a dealer fee baked into the system price (EnergySage).

The way it works is simple to miss. To offer a low advertised rate, the lender charges the installer a fee, and the installer rolls that fee into the price you finance. Two quotes for the same hardware can differ by thousands depending on which loan product sits behind them. The cash price might be $29,000 while the financed price for the identical system is quietly higher, because the fee is inside it (EnergySage).

I am keeping the numbers directional on purpose, because fees and rates vary by lender and change over time. The point is the mechanism. A lower monthly payment is sometimes bought with a higher total price, and the credit you claim is calculated on that higher price, which softens but does not erase the extra cost. Ask for the cash price and the financed price in writing, side by side, and ask directly whether a dealer fee is included. A straight answer is a good sign. A dodge is not (Consumer Reports).

Upfront price vs the 25-year number

Every path answers two different cost questions, and dealers tend to show you only the flattering one.

The upfront question is what you pay to get the system running. Cash is highest here, a full payment near $29,000 before the credit comes back at tax time. A loan can be near zero at signing. A lease and a PPA are usually zero down as well. On this question alone, the three financed paths look identical and cash looks painful, which is exactly why a salesperson anchors on it (EnergySage).

The lifetime question is what the system costs you across its roughly 25-year life. Now the order flips. Cash is cheapest, because you paid once and kept the full credit, and after that your power is close to free (Consumer Reports). A loan sits a bit above cash, by the interest and any dealer fee. A lease or PPA lands higher still, because you pay every month for 20 to 25 years, those payments often rise under an escalator, and you never stop paying, since you never own the hardware (DOE).

Both questions are fair. They just answer different things. If cash flow this year is the binding constraint, the upfront number rules. If total value over the time you will own the home matters more, the 25-year number is the one to trust. The mistake is letting a dealer show you upfront cost for the lease and lifetime savings for nothing else.

Cash, loan, lease, and PPA side by side

Here is the whole comparison on one grid, scored on the five things that actually move your outcome. Figures are directional, built around a $29,000 example system before incentives.

Read it top to bottom and the pattern is hard to miss. The financed paths tie on upfront cost, which is the one line a lease pitch loves. On the four lines below it, cash and loan hold the advantage, and the gap compounds over 25 years (EnergySage).

What each path does when you sell the house

Most homeowners do not stay 25 years, so the resale story matters more than it first seems. Ownership and the type of contract change what a buyer sees.

An owned system, whether you paid cash or financed it, is generally treated as a feature that adds value, because the new owner inherits panels that cut their power bill with nothing left to pay on the hardware (Consumer Reports). If a loan is still outstanding, it is normally settled at closing out of the sale proceeds, the same way a second lien would be, so the panels pass to the buyer free and clear.

A lease or PPA is different. Because the provider owns the equipment, the contract has to transfer to the buyer, and the buyer has to qualify and agree to take on the remaining payments and the escalator. Some buyers balk, some lenders raise questions, and a few deals stall while the lease is sorted out (DOE). The system that looked like a painless monthly bill can turn into a line item your real estate agent has to negotiate around.

If there is any chance you sell before the contract ends, read the transfer and buyout terms before you sign. A lease that is cheap to live with can be expensive to leave.

How to put two offers in the same units

The cash price and the "$0 down" monthly cannot be compared as given, so convert them to the same thing first. Pick total cost over the life you expect to own the home, and run every offer through it.

For cash, start with the full price, subtract the 30% credit you will claim, and that is your number. For a loan, add up the payments over the term, subtract the credit, and note whether a dealer fee lifted the financed price above the cash price. For a lease or PPA, add up the monthly payments across the full contract with the escalator applied, and remember the credit does not come to you (IRS).

Then line the totals up next to the utility bill you would pay with no solar at all. That last column is the one the dealer skipped, and it is the only honest baseline. A good offer beats the do-nothing bill by a wide margin. A weak one barely does, once you count the credit you gave away and the payments that keep rising (EIA).

Do this on paper for 20 minutes and the "which is better" fog usually clears. The offer with the lowest lifetime total, not the lowest first payment, is the one that keeps your money.

Questions to ask before you sign financing

Take this list to the table. Each answer should be plain and in writing, and a salesperson who will not put it in writing is telling you something.

• Is this a loan I own or a lease or PPA the provider owns? Everything else follows from this (DOE).
• Who claims the 30% federal credit under this offer, me or the company (IRS)?
• What is the cash price and the financed price for the identical system, side by side, and is a dealer fee included (EnergySage)?
• What is the total of all payments over the full term, not just the monthly figure?
• If this is a lease or PPA, what is the annual escalator, and what are the buyout and transfer terms if I sell (Consumer Reports)?
• Does my tax liability let me actually use the credit this year or in the carryforward window (EnergySage)?
• How does each offer compare against my current utility bill with no solar at all (EIA)?

Financing traps that cost you the most

These are the ways a financing decision goes wrong, drawn from the patterns that cost homeowners real money.

• Judging by the monthly payment. The lowest payment is often the most expensive system over 25 years, because it is a lease you never stop paying (DOE).
• Assuming "$0 down" means free. It means the cost moved into interest, a dealer fee, or a long rental, not that it vanished (EnergySage).
• Giving away the credit without noticing. On a lease or PPA the provider pockets the $8,700, and many buyers never realize they signed it away (IRS).
• Claiming a credit you cannot use. If your tax liability is too low to absorb the 30% in the carryforward window, a loan's math is weaker than the quote assumes (EnergySage).
• Ignoring the escalator. A lease payment that rises a few percent a year can end up well above where it started, and the pitch rarely totals those later years for you (Consumer Reports).
• Forgetting resale. A lease that has to transfer to a buyer can complicate a sale you did not see coming when you signed a 25-year contract (DOE).

Run your own numbers before you commit

The core problem with a kitchen-table pitch is that it shows you one path in its best light and leaves out the rest. You cannot compare cash, a loan, a lease, and a PPA when each is described in different units and only one total is on the table.

A free Enact homeowner proposal puts the financing paths next to each other on your real numbers before you sign anything. It models each option on the same system and the same usage, so you can see upfront cost, lifetime cost, and who keeps the credit lined up in one view instead of trusting a dealer to total it honestly. When an installer's "$0 down" offer lands, you can hold it against that side-by-side and tell in a minute whether the monthly number is hiding a higher lifetime price.

If you are still deciding whether to own at all, the residential solar overview walks through what ownership gets you and how a purchase differs from renting your roof to a provider. Start with the structure, not the monthly payment. The path that keeps the most value is almost always the one where you own the system and claim the credit yourself, and now you can prove it with the offers in front of you.

Frequently asked questions

Is it better to buy or lease solar panels?

For most homeowners who can use the tax credit, buying with cash or a loan keeps more value, because you own the system and claim the 30% federal credit yourself rather than handing it to a leasing company (IRS). A lease makes sense mainly when you have no cash and little tax liability, since it offers nothing down but a higher lifetime cost and no ownership (DOE).

Who gets the tax credit on a solar lease?

The leasing company gets it, not you. The 30% Residential Clean Energy Credit goes to whoever owns the equipment, and on a lease or PPA that is the provider (EnergySage). On a $29,000 system that is roughly $8,700 the provider claims, which is a large part of why a lease costs more over its life (IRS).

What is a dealer fee on a solar loan?

A dealer fee is a charge the lender collects from the installer in exchange for a low advertised rate, and the installer usually builds it into the price you finance (EnergySage). It means the financed price for a system can be thousands higher than the cash price for the same hardware, so always ask for both prices in writing (Consumer Reports).

Does a solar lease or PPA make my house harder to sell?

It can. Because the provider owns the panels, the lease or PPA has to transfer to the buyer, who must qualify and agree to the remaining payments, which sometimes slows or complicates a sale (DOE). An owned system, by contrast, is generally treated as a feature that adds value, and any loan is settled at closing (Consumer Reports).

Is "$0 down" solar actually free?

No. "$0 down" means you pay nothing at signing, not that the system is free. The cost moves into loan interest, a dealer fee, or years of lease payments instead (EnergySage). Compare the total of all payments over the full term against the cash price before you treat zero down as a deal (EnergySage).

How do I compare a cash price to a monthly solar offer?

Convert both to total cost over the years you expect to own the home. For cash, take the price minus the 30% credit; for a monthly offer, add up every payment over the full term and remember whether you or the provider keeps the credit (IRS). Then compare each total against your current utility bill with no solar, which is the only honest baseline (EIA).

Sources

1. IRS - Residential Clean Energy Credit
2. EnergySage - Solar Loans
3. EnergySage - Federal Solar Tax Credit Explained
4. EnergySage - Solar Panel Cost
5. DOE - Homeowner's Guide to Going Solar
6. Consumer Reports - Solar Panels
7. EIA - Average Price of Electricity (FAQ)
8. Enact - Free Homeowner Proposal
9. Enact - Residential Solar