621 Energy
18installations on record
$2.77median price per watt
Residential SolarCommercial SolarFinancing Available
Installation Statistics
18
Quotes in Database
85 kW
Avg System Size
$174,642
Avg Total Price
Solar Price per Watt
$2.89/W
Average
$2.77/W
Median
Top ZIP Codes
Recent Installations
LocationSystemPrice$/W · $/kWhDate
Marlborough, MA 01752175.7 kW$377,712$2.15/WFeb 27, 2025Manchester, NH 0310376.4 kW$151,351$1.98/WJan 22, 2025Manchester-By-The-Sea, MA 01944291.8 kW$754,853$2.59/WNov 20, 2024Natick, MA 0176013.6 kW$49,226$3.62/WMar 22, 2024Acton, MA 0172038.4 kW$240,389$6.26/WMar 5, 2024Acton, MA 0172038.4 kW$240,389$6.26/WMar 5, 2024Cambridge, MA 0213830.1 kW$99,000$3.29/WJan 29, 2024Cambridge, MA 0213830.1 kW$106,600$3.54/WJan 29, 2024Winchester, MA 01890351.8 kW$779,892$2.22/WDec 22, 2023Amesbury, MA 0191385.9 kW$186,775$2.17/WNov 30, 2022Dracut, MA 0182663.4 kW$141,074$2.23/WNov 4, 2022Marion, MA 0273831 kW$90,713$2.93/WJul 18, 2022Holliston, MA 01746195.7 kW$358,000$1.83/WApr 18, 2022Cambridge, MA 0214032 kW$83,560$2.61/WMar 22, 2022Acton, MA 0172019.2 kW$43,060$2.24/WNov 4, 2021Lowell, MA 0185223.1 kW$93,670$4.05/WFeb 25, 2021Boston, MA 0213215.1 kW$55,040$3.64/WFeb 10, 2021Needham, MA 0249418.5 kW$75,540$4.08/WJan 12, 2021