Compare · X vs Y
Solar loan vs lease (or PPA): honest ownership math
Decisions built from Buy (cash or loan) and Lease / PPA — editorial analysis; each figure sourced or labeled in review.
Ownership, financing and electricity purchases are different decisions. Buying makes you the system owner; a lease or PPA leaves ownership with a third party. In either case, utility charges can remain. Compare the complete contract rather than assuming one option is always cheaper.
At a glance: Buy (cash or loan) vs Lease / PPA
| Buy (cash or loan) | Lease / PPA | |
|---|---|---|
| Who owns the system | You — kWh are yours | The installer/financier |
| Federal residential credit | No new eligibility after December 31, 2025 | Homeowner does not own the system; business rules are separate |
| What you compare | Price ÷ watts = $/W | Escalator % per year |
| End of term | Paid-off asset | Renew, buy out, or keep paying |
When Buy (cash or loan) wins
- Ownership can avoid a long-term third-party energy payment, but financing, maintenance, replacement equipment and utility charges still affect total cost.
- Compare the cash price per DC watt separately from loan principal, fees, APR and total payments. A low advertised rate alone does not establish the cheapest loan.
When Lease / PPA wins
- A lease or PPA may reduce upfront spending. Maintenance responsibilities, exclusions and annual payment increases depend on the written contract.
- Third-party ownership may suit someone who does not want to own the equipment, but it does not automatically cover roof repairs or future array removal.
Draw: Before a home sale, a loan may need payoff or approved assumption. A lease or PPA may require buyer approval, transfer paperwork or a buyout. Obtain the process and costs before signing; resale value is not guaranteed.
The honest verdict
Request cash, loan and third-party-ownership offers for the same design. Compare total household payments, realistic utility savings, escalators, repair coverage and exit terms over your expected time in the home. Do not assume a 30% residential tax credit for a new 2026 installation or a guaranteed business credit for the provider.
Where these figures come from
- IRS: current residential credit eligibility
- CFPB: Solar Financing (2024 risk report; tax discussion is historical)
Source review: 2026-09-20. These sources support financing risks and tax distinctions, not a price or savings guarantee.