Estimate savings
Solar by state

Solar in New Hampshire

Across New Hampshire, homeowners pay about 16.4¢/kWh and a typical 6 kW system pays back in roughly 10.2 years after the 30% federal tax credit.

State avg rate 16.4¢/kWh
Typical payback 10.2yrs
Best Solar Value Good

Counties in New Hampshire

Grafton County
17.4¢/kWh · 7,290 kWh/yr
$1,272/yr 9.9 yr payback
Rockingham County
16.3¢/kWh · 7,758 kWh/yr
$1,264/yr 10 yr payback
Strafford County
16.3¢/kWh · 7,758 kWh/yr
$1,264/yr 10 yr payback
Belknap County
16.3¢/kWh · 7,692 kWh/yr
$1,253/yr 10.1 yr payback
Carroll County
16.3¢/kWh · 7,662 kWh/yr
$1,248/yr 10.1 yr payback
Hillsborough County
16.3¢/kWh · 7,572 kWh/yr
$1,233/yr 10.2 yr payback
Merrimack County
16.3¢/kWh · 7,620 kWh/yr
$1,241/yr 10.2 yr payback
Sullivan County
16.3¢/kWh · 7,494 kWh/yr
$1,221/yr 10.3 yr payback
Cheshire County
16.3¢/kWh · 7,446 kWh/yr
$1,213/yr 10.4 yr payback
Coos County
16.3¢/kWh · 7,332 kWh/yr
$1,194/yr 10.6 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.