Boston Solar
834 installs · $3.65/W avg
Kearsarge Energy
17installations on record
$2.76median price per watt
Commercial Solar
Installation Statistics
17
Quotes in Database
727.8 kW
Avg System Size
$12,843,621
Avg Total Price
Top ZIP Codes
Recent Installations
LocationSystemPrice$/W · $/kWhDate
Saint Johnsville, NY 134526 kW$11,901,243—Jan 16, 2026Watertown, MA 02472157.8 kW$520,010$3.29/WDec 5, 2025Watertown, MA 02472489.3 kW$2,262,947$4.63/WDec 5, 2025Boston, MA 02134263.1 kW$1,426,553$5.42/WDec 31, 2024Watertown, MA 02472647.1 kW$2,849,124$4.40/WJan 5, 2024Watertown, MA 02472520.8 kW$1,409,118$2.71/WDec 7, 2023Watertown, MA 02472315.7 kW$1,044,207$3.31/WDec 7, 2023Watertown, MA 02472647.1 kW$2,950,124$4.56/WOct 23, 2023Watertown, MA 02472526.1 kW$2,047,528$3.89/WJun 23, 2023Watertown, MA 02472125.4 kW$265,356$2.12/WJun 23, 2023Portsmouth, RI4990 kW$13,786,000$2.76/WJan 5, 2023Montague, MA 013762794.9 kW4339.59 kWh$6,378,400—Nov 23, 2021Montague, MA 01376493.2 kW765.81 kWh$1,125,600—Nov 23, 2021Walpole, MA 02081163.4 kW$290,167$1.78/WFeb 10, 2021Walpole, MA 0208194.9 kW$191,053$2.01/WFeb 4, 2021Walpole, MA 0208136.1 kW$93,869$2.60/WFeb 4, 2021Walpole, MA 02081101.6 kW$191,586$1.89/WFeb 4, 2021