Solar Financing Options: Cash, Loan, Lease, or PPA
How you pay for solar changes your total cost, what happens if you sell your home — and, since January 2026, who (if anyone) captures a federal tax benefit. The end of the residential tax credit reshuffled this comparison, so here’s the current version.
What changed in 2026
Until the end of 2025, ownership came with a 30% federal tax credit, which made cash and loan purchases clearly dominant. That credit is gone for homeowners. The only federal solar benefit left in the residential market flows through third-party owners — lease and PPA companies — which may still qualify under the commercial rules (Section 48E) within the 2025 law’s deadlines.
That does not automatically make leasing better. It means the comparison now runs on undiscounted ownership costs versus lease pricing that may (or may not) pass some 48E value through.
Cash purchase
You pay the full cost upfront and own the system outright.
- Lowest lifetime cost — no interest, no third-party profit margin.
- You keep all incentives your state offers — state tax credits, rebates, SRECs, and net metering savings are yours. In states like New York or New Jersey, that’s substantial; in others, it’s little.
- No federal credit anymore — budget on the full price.
- Best fit: homeowners with capital, a long stay ahead, and a state with decent incentives or high electricity rates.
Solar loan
You borrow to buy — same ownership as cash, plus interest.
- You keep state incentives and production income, same as cash.
- Financing costs bite harder now. Pre-2026, the tax credit could absorb a chunk of loan interest; today the interest is pure added cost. A high-APR solar loan can quietly double the effective system price — compare rates, terms, dealer fees, and prepayment penalties across multiple lenders, not just the installer’s preferred one.
- Watch for built-in dealer fees: some “low APR” solar loans embed a 15–30% upfront fee in the system price. Ask for the cash price versus the financed price explicitly.
- Best fit: buyers who want ownership without the upfront hit and can secure a genuinely low rate.
Solar lease
A company owns the system on your roof; you pay a fixed monthly fee.
- The company may capture remaining federal value under 48E — you benefit only if their pricing reflects it. Get multiple lease quotes and compare monthly payments and escalators, not marketing claims.
- Little to no upfront cost, still the main appeal.
- Smaller long-term savings than ownership — the company’s financing and profit sit inside your payment.
- Complicates home sales — transfer or buyout required.
- Best fit: homeowners who can’t use state tax credits, want zero upfront cost, and plan to stay put.
Power Purchase Agreement (PPA)
Like a lease, but you pay per kWh the system produces, usually below the utility rate.
- Same third-party ownership: no incentives for you, possible 48E value for the provider.
- Payment varies with production, and most PPAs include an annual escalator — read it closely; a 2.9% escalator can erase your savings margin within a decade if utility rates flatten.
- Same resale complications as a lease.
Side-by-side comparison (2026 rules)
| Cash | Loan | Lease | PPA | |
|---|---|---|---|---|
| You own the system | Yes | Yes | No | No |
| Federal tax credit | None (ended 2025) | None (ended 2025) | Company may claim 48E | Company may claim 48E |
| State incentives & SRECs | Yours | Yours | Company’s | Company’s |
| Upfront cost | Highest | Low/none | None | None |
| Total lifetime cost | Lowest | Moderate | Higher | Higher |
| Affects home sale | Minimal | Minimal | Complicates | Complicates |
Which one fits your situation
- Cash still wins on lifetime cost, and by a wider margin in states with real incentives you’d keep.
- A loan works if the rate is honest — scrutinize dealer fees now that no tax credit cushions them.
- A lease or PPA deserves a fresh look in 2026 only if the pricing visibly reflects the provider’s remaining tax benefits — make them compete against an ownership quote on total 25-year cost.
Whichever route, run the system size and cost through our calculator, check your state’s remaining incentives in our state guides, and pressure-test the return with is solar worth it before signing.
Frequently Asked Questions
- Does anyone still get a federal tax credit on residential solar in 2026?
- Not homeowners. The residential credit (Section 25D) ended for purchases after December 31, 2025, so cash and loan buyers receive nothing from the IRS. Third-party owners — the companies behind leases and PPAs — may still qualify for the commercial credit under Section 48E, subject to deadlines in the 2025 law. Whether any of that value reaches you depends entirely on the lease or PPA pricing, so compare offers on the monthly numbers, not the pitch.
- Is a solar loan the same as a home equity loan?
- Not necessarily. Many solar loans are unsecured or secured against the equipment, separate from a home equity loan or HELOC, though some homeowners finance solar through a HELOC for lower rates. Compare interest rate, term, fees, and prepayment terms — with no tax credit softening the price, financing costs matter more than they used to.
- What happens to a lease or PPA when I sell my house?
- The contract typically must be transferred to the buyer or bought out, which can complicate a sale if the buyer doesn't want to assume it. This remains the most commonly cited drawback of third-party ownership, and it hasn't changed with the tax rules.