{"$g":{"$P":"What do solar panels cost in Franklin County, TN?","$Q":"The average solar panel cost in Franklin County, TN as of August, 2025 is estimated at $4.22/W. In Franklin County, TN, installing a 5 kW solar panel system will set you back approximately $14,770 after federal tax incentives.","$R":"b"},"$S":"do_"}