Caribou CountyPower Outage History
2017–2025 · Idaho
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 4, 2025 | 3 hrs | 2,197 (60%) | Unnamed event |
| Feb 26, 2025 | 3 hrs | 2,167 (60%) | Unnamed event |
| Jul 5, 2025 | 2 hrs | 1,933 (53%) | Unnamed event |
| Feb 26, 2025 | <1 hr | 1,691 (46%) | Unnamed event |
| Jul 4, 2025 | 3 hrs | 1,411 (39%) | Unnamed event |
Over the 9 years from 2017 to 2025, Caribou County recorded 351 distinct power outage events, averaging 2.6 hours per event.
The single worst outage on record in Caribou County started October 4, 2025, lasting 3 hours and leaving up to 2,197 customers without power (60% of the county) at its peak.
July has historically been the worst month for outages in Caribou County, with 54 events recorded during that month across the dataset.
Based on this history, Caribou County earns a Reliability Grade of C, placing it in the 54th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Caribou County's outage profile
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Read our mission →Similar counties in Idaho
Counties with the closest reliability grade and national percentile to Caribou County.
| County | Grade | National percentile |
|---|---|---|
| Oneida County | C | 54th |
| Kootenai County | C | 53rd |
| Bingham County | C | 56th |
| Fremont County | C | 57th |
| Owyhee County | C | 57th |
Most reliable counties in Idaho
The top 3 counties in Idaho by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Minidoka County | A | 95th |
| Camas County | A | 92nd |
| Ada County | A | 92nd |
Least reliable counties in Idaho
The bottom 3 counties in Idaho by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Clearwater County | F | 3rd |
| Bonner County | F | 10th |
| Boise County | F | 14th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Caribou County?
Between 2017 and 2025, Caribou County recorded 351 outage events, averaging 2.6 hours each.
What is Caribou County's reliability grade?
Caribou County has a Reliability Grade of C, in the 54th national percentile.
What was the worst power outage in Caribou County?
The worst outage on record started October 4, 2025, lasting 3 hours and affecting up to 2,197 customers.