Estimate savings
Solar by state

Solar in Hawaii

Across Hawaii, homeowners pay about 40.8¢/kWh and a typical 6 kW system pays back in roughly 3.2 years after the 30% federal tax credit.

State avg rate 40.8¢/kWh
Typical payback 3.2yrs
Best Solar Value Excellent

Counties in Hawaii

Hawaii County
42.5¢/kWh · 10,572 kWh/yr
$4,490/yr 2.8 yr payback
Kalawao County
42.2¢/kWh · 10,164 kWh/yr
$4,292/yr 2.9 yr payback
Kauai County
45.0¢/kWh · 8,988 kWh/yr
$4,045/yr 3.1 yr payback
Maui County
39.1¢/kWh · 8,970 kWh/yr
$3,504/yr 3.6 yr payback
Honolulu County
35.1¢/kWh · 9,456 kWh/yr
$3,319/yr 3.8 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.