{"bp":{"cU":"What do solar panels cost in Contra Costa County, CA?","cV":"In Contra Costa County, CA, the mean cost per watt for solar panels as recorded in August, 2025 is $3.09/W. The installation of a 5 kW solar panel system in Contra Costa County, CA will cost about $10,815 after federal tax credits.","cW":"b"},"cX":"gu"}