It’s complicated. Appraisers will not attribute any value to them whether you are buying or selling. Real estate agents never recommend installing panels to make your house more salable.
Solar panels are a big investment —average installation costs can range from $15,000 to $26,000 which can be reduced by an assortment of rebates and tax credits, depending on your state. An installer can estimate the number of years to reach break even, but the answer can range from 8 to 15 years to recoup your investment.
Solar panels will usually save you money immediately on your electricity costs. Some people have seen their electric bill cut in half and feel great that they are helping the planet. While the economics of solar panels are murky, it would be a good idea to turn your thermostat down in the winter and turn out the lights to save energy before you put your house on the market whether or not you have solar panels. Buyers do look at electricity costs.