Estimate savings
Solar by state

Solar in Idaho

Across Idaho, homeowners pay about 9.0¢/kWh and a typical 6 kW system pays back in roughly 16.9 years after the 30% federal tax credit.

State avg rate 9.0¢/kWh
Typical payback 16.9yrs
Best Solar Value Low

Counties in Idaho

Jefferson County
10.4¢/kWh · 8,682 kWh/yr
$900/yr 14 yr payback
Bannock County
10.4¢/kWh · 8,604 kWh/yr
$892/yr 14.1 yr payback
Franklin County
10.4¢/kWh · 8,574 kWh/yr
$889/yr 14.2 yr payback
Fremont County
10.8¢/kWh · 8,274 kWh/yr
$890/yr 14.2 yr payback
Teton County
10.8¢/kWh · 8,220 kWh/yr
$884/yr 14.3 yr payback
Madison County
10.4¢/kWh · 8,364 kWh/yr
$867/yr 14.5 yr payback
Bear Lake County
10.4¢/kWh · 8,340 kWh/yr
$865/yr 14.6 yr payback
Clark County
10.4¢/kWh · 8,178 kWh/yr
$848/yr 14.9 yr payback
Caribou County
10.4¢/kWh · 8,034 kWh/yr
$833/yr 15.1 yr payback
Butte County
9.1¢/kWh · 9,156 kWh/yr
$830/yr 15.2 yr payback
Camas County
8.6¢/kWh · 9,276 kWh/yr
$793/yr 15.9 yr payback
Owyhee County
8.7¢/kWh · 9,144 kWh/yr
$793/yr 15.9 yr payback
Gooding County
8.6¢/kWh · 9,192 kWh/yr
$786/yr 16 yr payback
Lincoln County
8.6¢/kWh · 9,222 kWh/yr
$788/yr 16 yr payback
Minidoka County
8.6¢/kWh · 9,222 kWh/yr
$788/yr 16 yr payback
Jerome County
8.6¢/kWh · 9,114 kWh/yr
$779/yr 16.2 yr payback
Elmore County
8.6¢/kWh · 9,048 kWh/yr
$774/yr 16.3 yr payback
Twin Falls County
8.6¢/kWh · 9,042 kWh/yr
$773/yr 16.3 yr payback
Oneida County
8.7¢/kWh · 8,874 kWh/yr
$769/yr 16.4 yr payback
Ada County
8.6¢/kWh · 8,916 kWh/yr
$762/yr 16.5 yr payback
Bingham County
8.6¢/kWh · 8,748 kWh/yr
$748/yr 16.8 yr payback
Canyon County
8.6¢/kWh · 8,748 kWh/yr
$748/yr 16.8 yr payback
Gem County
8.6¢/kWh · 8,706 kWh/yr
$744/yr 16.9 yr payback
Power County
8.6¢/kWh · 8,742 kWh/yr
$747/yr 16.9 yr payback
Boise County
8.6¢/kWh · 8,658 kWh/yr
$740/yr 17 yr payback
Payette County
8.6¢/kWh · 8,652 kWh/yr
$740/yr 17 yr payback
Bonneville County
8.7¢/kWh · 8,322 kWh/yr
$722/yr 17.5 yr payback
Nez Perce County
9.6¢/kWh · 7,554 kWh/yr
$722/yr 17.5 yr payback
Blaine County
7.8¢/kWh · 9,228 kWh/yr
$717/yr 17.6 yr payback
Lewis County
9.6¢/kWh · 7,476 kWh/yr
$715/yr 17.6 yr payback
Latah County
9.6¢/kWh · 7,404 kWh/yr
$708/yr 17.8 yr payback
Cassia County
8.1¢/kWh · 8,682 kWh/yr
$704/yr 17.9 yr payback
Custer County
8.0¢/kWh · 8,826 kWh/yr
$703/yr 17.9 yr payback
Washington County
8.6¢/kWh · 8,250 kWh/yr
$705/yr 17.9 yr payback
Lemhi County
8.0¢/kWh · 8,760 kWh/yr
$697/yr 18.1 yr payback
Valley County
8.6¢/kWh · 8,082 kWh/yr
$691/yr 18.2 yr payback
Benewah County
9.6¢/kWh · 7,038 kWh/yr
$673/yr 18.7 yr payback
Boundary County
9.2¢/kWh · 7,314 kWh/yr
$672/yr 18.8 yr payback
Adams County
8.6¢/kWh · 7,758 kWh/yr
$663/yr 19 yr payback
Idaho County
8.7¢/kWh · 7,326 kWh/yr
$635/yr 19.8 yr payback
Clearwater County
8.7¢/kWh · 7,122 kWh/yr
$617/yr 20.4 yr payback
Kootenai County
8.6¢/kWh · 7,140 kWh/yr
$615/yr 20.5 yr payback
Bonner County
9.0¢/kWh · 6,780 kWh/yr
$611/yr 20.6 yr payback
Shoshone County
8.7¢/kWh · 6,996 kWh/yr
$607/yr 20.8 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.