leasing agreements, separately financed solar panels (where the panels serve as collateral for debt distinct from any existing mortgage); or power purchase agreements. Fannie Mae will purchase or securitize a mortgage loan on a property with solar panels. If the borrower is, or will be, the owner of the solar panels (meaning the panels were a cash purchase, were included in the home purchase price, were otherwise financed and repaid in full, or are secured by the existing first mortgage), our standard requirements apply (for example, appraisal, insurance, and title). Properties with solar panels and other energy efficient items financed with a PACE loan are not eligible for delivery to Fannie Mae if the PACE loan is not paid in

practical complication is that battery attachment to solar systems is newer than solar panels themselves, and because far fewer home sales involve a confirmed owned battery than involve confirmed owned panels, the paired-sales market data an appraiser or agent would need to isolate a battery's own distinct contribution to price is considerably thinner than the data available for panels alone. That doesn't change the ownership rule — it just means an appraiser is more likely to find solid market support for a solar panel adjustment than for a battery-specific one in most markets today, and an agent should set expectations with a seller accordingly rather than assuming a battery adds a comparable, well-documented premium the way an owned solar array

present on the property without folding their value into the sales comparison grid. If a battery is also installed. Home battery storage is increasingly sold alongside solar panels, and the same ownership-based rule described above governs a battery exactly the way it governs the panels themselves: an owned or fixture-financed battery can be considered for contributory value under the same standard appraisal requirements, while a leased battery or one tied to a separate financing agreement that allows repossession is personal property and must be excluded, regardless of how permanently it appears to be wired into the home's electrical system. The practical complication is that battery attachment to solar systems is newer than solar panels themselves, and because far fewer home