Idaho Power Outage History
44 counties tracked, 2014–2025. County-level reliability grades and outage frequency below.
Counties tracked
44
Avg national percentile
55th
Higher = more reliable
Grade F counties
6
Idaho county map
Hover a county for its reliability grade
Reliability grade:ABCDF
County rankings (worst to best)
| County | Grade | National percentile |
|---|---|---|
| Clearwater County | F | 3rd |
| Bonner County | F | 10th |
| Boise County | F | 14th |
| Benewah County | F | 17th |
| Boundary County | F | 17th |
| Idaho County | F | 17th |
| Shoshone County | D | 21st |
| Power County | D | 22nd |
| Adams County | D | 27th |
| Butte County | D | 27th |
| Valley County | D | 32nd |
| Latah County | D | 34th |
| Blaine County | D | 39th |
| Clark County | D | 39th |
| Gooding County | C | 43rd |
| Lemhi County | C | 43rd |
| Bear Lake County | C | 49th |
| Kootenai County | C | 53rd |
| Caribou County | C | 54th |
| Oneida County | C | 54th |
| Bingham County | C | 56th |
| Fremont County | C | 57th |
| Owyhee County | C | 57th |
| Nez Perce County | C | 58th |
| Jerome County | C | 59th |
| Elmore County | C | 59th |
| Lincoln County | B | 63rd |
| Jefferson County | B | 64th |
| Washington County | B | 68th |
| Gem County | B | 72nd |
| Madison County | B | 72nd |
| Lewis County | B | 73rd |
| Teton County | B | 78th |
| Bannock County | A | 81st |
| Franklin County | A | 82nd |
| Twin Falls County | A | 82nd |
| Payette County | A | 85th |
| Bonneville County | A | 85th |
| Canyon County | A | 88th |
| Cassia County | A | 90th |
| Ada County | A | 92nd |
| Camas County | A | 92nd |
| Minidoka County | A | 95th |
| Custer County | Not ranked | — |