Ownership is the first fork
A seller-owned system and a third-party-owned system can produce different closing steps. A solar loan, lease, or power-purchase agreement may have a payoff, transfer, approval, or ongoing payment requirement. The U.S. Department of Energy specifically advises asking about agreements tied to the panels. Do not accept “solar included” as a substitute for the actual contract and evidence of how it will be handled at closing.
Check the working system
Ask when the panels and inverter were installed, what equipment is present, whether there is a battery, and who installed and services the system. Compare that with the roof's age and condition. Obtain the production history, recent utility bills, monitoring access, maintenance records, and warranties. Lower bills may reflect the prior household's behavior as well as the system; they are not a guarantee of your future savings.
Bring the right reviewers in early
Have the lender consider any solar payment or recorded interest. Ask a qualified solar contractor or inspector about equipment condition and a roofing professional about roof work that might require panel removal. An attorney or escrow/title professional can explain transfer, payoff, or lien questions that are not clear from the listing. The seller should disclose known terms and provide documents promptly.
Price the net benefit, not the brochure
Make a simple ownership worksheet: expected system payments, recent electricity use and production, likely maintenance, roof work, and any transfer costs. Use conservative assumptions and don't claim a new-buyer tax credit based on old promotional material. A well-documented system can be valuable; an unclear obligation should be resolved before you rely on it in your offer.
Quick answer
Do solar panels automatically transfer with the house?
Do not assume so. Ownership and contract terms determine what must be paid off, assigned, or approved. Review the documents before closing.

