Almost every modern agreement transfers to the buyer — who inherits a power rate locked below the utility, which good real estate agents position as a selling point. Owned systems are cleaner still: they simply add home value ($15-25K typically).
Two cautions: PPAs carry prepayment penalties before year 5, so if you're selling within 5 years, make sure your agent knows how to transfer payments — or choose a program with flexible buyouts. And Sunrun-style providers only offer buyouts at certain years, which limits your options at closing. Tell your rep your realistic timeline in your home and let it shape the program choice. It matters more than people think.