{"$x":{"ax":"What do solar panels cost in Grinnell, IA?","ay":"As of August, 2025, the average solar panel installation cost in Grinnell, IA has reached $3.85/W. In Grinnell, IA, the cost of installing a 5 kW solar panel system is approximately $13,475 after applying the federal tax credit.","az":"c"},"aA":"ev"}