Solar by state

Solar in Massachusetts

Across Massachusetts, homeowners pay about 14.3¢/kWh and a typical 6 kW system pays back in roughly 11.2 years after the 30% federal tax credit.

State avg rate 14.3¢/kWh

Typical payback 11.2yrs

Best Solar Value Good

Counties in Massachusetts

Middlesex County

16.9¢/kWh · 7,752 kWh/yr

$1,308/yr 9.6 yr payback

14.9¢/kWh · 8,514 kWh/yr

$1,269/yr 9.9 yr payback

Barnstable County

14.9¢/kWh · 8,094 kWh/yr

$1,207/yr 10.4 yr payback

Plymouth County

14.9¢/kWh · 8,100 kWh/yr

$1,208/yr 10.4 yr payback

Nantucket County

13.8¢/kWh · 8,388 kWh/yr

$1,158/yr 10.9 yr payback

Worcester County

14.9¢/kWh · 7,776 kWh/yr

$1,161/yr 10.9 yr payback

14.9¢/kWh · 7,650 kWh/yr

$1,141/yr 11 yr payback

13.9¢/kWh · 7,764 kWh/yr

$1,082/yr 11.6 yr payback

13.1¢/kWh · 8,172 kWh/yr

$1,073/yr 11.7 yr payback

13.1¢/kWh · 8,034 kWh/yr

$1,055/yr 11.9 yr payback

14.1¢/kWh · 7,536 kWh/yr

$1,060/yr 11.9 yr payback

Franklin County

14.1¢/kWh · 7,482 kWh/yr

$1,053/yr 12 yr payback

Berkshire County

14.1¢/kWh · 7,374 kWh/yr

$1,038/yr 12.1 yr payback

Hampshire County

13.1¢/kWh · 7,440 kWh/yr

$977/yr 12.9 yr payback

Figures are modeled estimates from NREL PVWatts v8 + EIA. Not affiliated with NREL, DOE or EIA · not financial advice. Last updated June 2026.