Every solar quote eventually comes down to how you pay for it. The four common paths deliver roughly the same energy offset — what differs is what you actually give up to get it.
The four paths, in plain terms
Cash — you pay the full price upfront and own the system outright from day one. No interest, no third party, maximum lifetime savings.
Loan — you finance the purchase and still own the system, but pay interest over the loan term. You get ownership without the full upfront cash requirement.
Lease — a company owns the panels on your roof; you pay a fixed (or slowly escalating) monthly fee to use the electricity they produce. You never own the system.
PPA (Power Purchase Agreement) — similar to a lease, but instead of a flat fee you pay per kWh actually produced, usually at a rate below your utility's. Also no ownership.
Why cash usually wins on paper
All four paths deliver a similar energy offset — the difference is entirely in what you pay to capture that value. Cash has zero financing cost. A loan adds interest but you still eventually own the asset and keep 100% of the savings once it's paid off. Lease and PPA require no upfront capital, but a third party keeps part of the value indefinitely, since you're paying their margin for as long as the contract runs — you never reach the "fully paid off, pure savings" phase ownership gives you.
Why some people still choose lease or PPA
Access to capital and risk tolerance are the real reasons, not because the math favors it. If several thousand dollars upfront isn't available, and loan financing isn't attractive at your credit terms, a $0-down lease or PPA can still beat doing nothing — it just captures less of the total value than ownership does. It also shifts equipment performance and maintenance risk to the owner, which some homeowners specifically prefer.
The 2026 wrinkle: the federal credit
Since the federal residential credit expired for owned systems at the end of 2025, cash and loan buyers no longer get that direct discount — see our full 2026 tax credit guide. Lease and PPA providers can still access a separate commercial credit and may reflect some of that in their pricing, which narrows — but doesn't eliminate — the gap between ownership and third-party ownership this year. Recompute the comparison with current numbers rather than trusting a pre-2026 article.
What actually changes the outcome
- Your loan interest rate — a high rate can erode much of a loan's advantage over a lease.
- How long you'll stay in the home — leases and PPAs can complicate a home sale since they often need to transfer to the buyer.
- Your local electricity rate and its trajectory — higher, faster-rising rates favor ownership even more heavily, since you capture 100% of that escalation.
Frequently asked questions
Is it better to buy or lease solar panels?
Buying — with cash or a loan — almost always wins on total lifetime savings because you own the system and every year of production after payoff is pure savings. Leasing or a PPA trades some of that value for no upfront cost.
Does a solar loan payment usually beat the electric bill it replaces?
It can, especially with a longer loan term, but it depends on your interest rate, down payment and local electricity rate — check your specific numbers rather than assuming.