Brena Swanson of Housingwire states “My thoughts are that solar panel adjustments will vary by appraiser and property. The important thing is for the Appraiser to interview the homeowner who has a PV system to determine what their actual average wattage saved is. Loan Officers can help this process by having the homeowner gather this info prior to the appraisal inspection, for the appraiser to analyze.”
She goes on to cite a study – “Selling into the Sun: Price Premium Analysis of a Multi-State Dataset of Solar Homes” – that found that buyers were willing to pay an average of about $4 per watt of PV installed – across various states, housing and PV markets, and home types. This equates to a premium of about $15,000 for a typical 3.75 kW PV system.
There seems little doubt that many home buyers will be willing to pay a premium for solar power but this is the first time I have seen it quantified.
You can read the full article on the Apple Appraisal website.