{"$y":{"ap":"What do solar panels cost in Hampden County, MA?","aq":"In August, 2025, the average cost of solar panels per watt in Hampden County, MA is $3.76/W. A 5 kW solar panel system will cost you around $13,160 in Hampden County, MA after the federal tax credit is applied.","ar":"b"},"as":"dR"}