Deciding to go solar is one question. How you pay for it is a completely separate one — and it has a bigger effect on your long-term return than most homeowners realize. Two people can put the identical system on identical roofs and end up with very different outcomes depending on how they financed it.
There are four main ways to pay for solar: cash, a solar loan, a lease, or a power purchase agreement (PPA). None of them is universally "best." The right choice depends on your finances, your tax situation, how long you plan to stay in the home, and whether owning the system matters to you. Here's how each one actually works, and who each fits.
The Big Dividing Line: Ownership
Before the four options, understand the split that separates them, because it drives almost everything else:
- Cash and loans mean you own the system. You get the full savings, the system adds value to your home, and once it's paid off the electricity is essentially free.
- Leases and PPAs mean a third party owns the system. They install it on your roof, you pay to use the power, and they keep ownership — and, importantly in 2026, the federal tax credit that comes with it. Your upfront cost is little to nothing, but your total savings are smaller and you don't own the asset.
Everything below comes back to that distinction. Now the four options.
1. Paying Cash
Paying cash is the simplest and, over the life of the system, the cheapest way to go solar. There's no interest, no lender, and no monthly payment — just the lowest possible total cost and the fastest payback period.
- Best for: homeowners who have the funds available and want the maximum lifetime return.
- The tradeoff: it's the largest upfront outlay, and it ties up capital you might use elsewhere.
- The payoff: you own the system outright from day one, and after breakeven, everything the system produces is money you're no longer sending the utility.
2. Solar Loans
A solar loan lets you own the system — with all the ownership benefits above — while spreading the cost into monthly payments instead of one lump sum. It's the most popular path for homeowners who want ownership without paying all at once.
- Best for: homeowners who want to own their system and full savings but would rather finance than pay cash.
- The tradeoff: interest. Because you're borrowing, your total cost over the loan term is higher than the cash price — how much higher depends on your rate and term.
- The structure: payments are often designed to land near or below your current electric bill, so you're effectively swapping a utility payment for a loan payment on an asset you'll eventually own free and clear.
A note worth reading the fine print on: some solar loans carry dealer fees baked into the financed amount, which raise the real cost. A transparent installer will show you the cash price alongside the financed price so you can see exactly what the financing costs.
3. Leases
With a lease, a third-party company owns the system and installs it on your roof. You pay them a fixed monthly amount to use it — typically lower than your current electric bill — with little or no money down.
- Best for: homeowners who want lower bills with no upfront cost and a hands-off arrangement, and who aren't concerned about owning the system.
- The tradeoffs: your total savings are smaller than owning (the third party keeps the ownership value), you don't build any equity in the system, and most leases include an escalator — an annual increase in your payment, often around 2–3% per year — that you'll want to understand before signing.
- At resale: when you sell the home, the lease has to be transferred to the buyer or bought out, which can add a wrinkle to the sale. It's manageable, but it's a step cash and loan owners don't deal with.
4. Power Purchase Agreements (PPAs)
A PPA is a close cousin to a lease. The difference is what you pay for: instead of a fixed monthly amount to use the system, you pay a set rate for the power it produces — essentially buying solar electricity from the system's owner at a fixed per-kWh price, usually below your utility's rate.
- Best for: the same profile as a lease — no upfront cost, hands-off, savings without ownership.
- The tradeoffs: the same as a lease, plus your payment scales with production, and PPAs typically include a rate escalator too. Compare the PPA rate (and its escalator) against what you'd otherwise pay the utility over the full term.
- Availability note: leases and PPAs aren't offered everywhere — some states restrict or don't allow third-party-owned solar arrangements — so what's on the table depends partly on where you live.
The 2026 Federal Tax Credit Twist
This is where 2026 genuinely changes the calculus, and it's the opposite of what a lot of people assume.
The residential federal tax credit — the 30% credit homeowners claimed when they bought a system with cash or a loan — ended on January 1, 2026. If you buy today, there is no federal tax credit on your purchase.
But leased and PPA systems are owned by the financing company, not you — and that company can still claim the separate commercial version of the credit, which wasn't repealed on the same schedule. As long as the system is placed in service by the end of 2027, the third-party owner can claim the 30% credit and may pass some of that value through to you as a lower payment.
The result is a real reversal from years past: in 2026, a lease or PPA can still carry a federal-credit benefit that a cash or loan purchase no longer can. That doesn't automatically make leasing the better deal — owners still keep the system as an asset, capture their state's incentives and exemptions, and get the full net metering value — but it's a genuine factor specific to this window, and it narrows the gap leases used to give up.
Two things to confirm rather than assume: how much of that credit a given provider actually passes through varies (ask them to show it in the numbers), and this commercial-credit pathway also sunsets — it's tied to that end-of-2027 placed-in-service deadline, not a permanent fixture. Treat any specific tax outcome as something to verify with the provider and a tax professional for your situation.
So Which Should You Choose?
A rough guide:
- Want the lowest lifetime cost and have the funds? Cash.
- Want to own the system and its full savings but finance it? A solar loan — the most common answer for a reason.
- Want lower bills with no upfront cost and a hands-off setup, and don't mind not owning? A lease or PPA — read the escalator and transfer terms carefully, and ask exactly how the federal credit is being passed through.
For homeowners focused on the maximum long-term return, owning (cash or loan) still tends to win, because you keep the system as an asset and the full ongoing savings. But in 2026 specifically, the federal-credit access on the lease/PPA side has narrowed that gap — so it's more worth running the actual numbers both ways than it was a couple of years ago.
Whichever direction you lean, the sticker price is only part of the picture — it's worth understanding what solar actually costs and what drives it first, then choosing the payment structure that fits your situation.
If you'd like to see real numbers for your home across cash, loan, and lease side by side — with the financing costs and any credit pass-through shown transparently — reach out to our team and we'll lay it out.
Lunex Power installs solar panel systems and home battery storage across Florida, Massachusetts, Connecticut, Rhode Island, Colorado, North Carolina, and South Carolina. Get a free quote to see what the numbers look like for your home.