Solar panels: buy vs loan vs lease vs PPA, compared

Rooftop solar can genuinely cut a power bill for decades — but how you pay for it determines whether you capture that value or hand most of it to a financing company. There are four ways to go solar, and they split on one axis: do you own the system or does someone else? Ownership captures the incentives and the long-run savings; the no-money-down options trade that upside for convenience. Here's the comparison, plus the contract traps that turn a good deal into a lien headache. This is general education, not a recommendation — solar economics are intensely local.

Cash purchase: most savings, most capital

Paying cash captures the full value of solar: you own the system, you claim any available tax credits and incentives directly, and after the payback period the electricity is essentially free for the panels' remaining life — often the best long-run return of any option by a wide margin. The obvious barrier is the large upfront cost, and the money is tied up in your roof. For homeowners with the capital who plan to stay in the house, it's the highest-value path, full stop.

Solar loan: ownership without the upfront hit

A solar loan lets you own the system — and therefore claim the incentives and keep the long-run savings — while spreading the cost over time, often with little or nothing down. The economics land close to a cash purchase minus the loan interest, which makes it the go-to for homeowners who want ownership but not a five-figure check. Watch the loan's structure: some are built around you applying the tax credit as a lump-sum principal payment, and if you don't (or can't use the full credit), your payment can jump. Read how the credit assumption is baked in.

Lease and PPA: no ownership, no upfront, less upside

With a lease, a company installs and owns panels on your roof and you pay a fixed monthly fee to use them. With a power purchase agreement (PPA), you instead pay a per-kilowatt-hour rate only for the electricity the system actually produces. Both require no upfront cost and hand off maintenance and risk to the provider — genuinely appealing if you lack the capital or the appetite to own equipment. But because the company keeps the incentives and builds in its profit, your savings are typically smaller than owning, and many contracts include an annual 'escalator' that raises your payment over time.

The verdicts

• Have the capital, staying put: cash purchase — the highest lifetime savings.
• Want ownership and incentives without the cash: a solar loan — read how the tax credit is assumed.
• No capital, want zero hassle and no repairs: a lease or PPA, eyes open about smaller savings.
• Prefer paying only for power produced: PPA over a flat lease.
• Everyone: verify current incentives, get multiple quotes, and read the escalator and home-sale transfer terms.

The bottom line

Solar's value is real, but ownership is where it concentrates — buy with cash or a loan and you keep the incentives and the decades of near-free power; lease or sign a PPA and you trade most of that upside for convenience and someone else's balance sheet. If you can own, own. If you can't, go in clear-eyed about escalators, long terms, and the resale complications. Either way, get several quotes, confirm the incentives that actually apply to you, and treat any high-pressure pitch as the warning sign it is.