Power CountyPower Outage History
What this grade means
(How grades are calculated)Worse than average — more frequent or longer outages than most counties. This county's recorded history shows more frequent outages and/or longer restoration times than most US counties over the same 12-year period. If you live here, it's worth taking backup power more seriously than an average household would.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 14, 2025 | 2 hrs | 3,827 (89%) | Unnamed event |
| Dec 18, 2020 | 3 hrs | 3,598 (84%) | Unnamed event |
| Oct 4, 2021 | <1 hr | 3,500 (82%) | Unnamed event |
| Sep 9, 2021 | 2 hrs | 3,269 (76%) | Unnamed event |
| Nov 18, 2020 | <1 hr | 3,230 (75%) | Winter Weather |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Power County, Idaho that day.
Over the 11 years from 2015 to 2025, Power County recorded 470 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Power County started October 14, 2025, lasting 2 hours and leaving up to 3,827 customers without power (89% of the county) at its peak.
October has historically been the worst month for outages in Power County, with 51 events recorded during that month across the dataset.
Based on this history, Power County earns a Reliability Grade of D, placing it in the 22nd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Idaho
Counties with the closest reliability grade and national percentile to Power County.
| County | Grade | National percentile |
|---|---|---|
| Shoshone County | D | 21st |
| Idaho County | F | 17th |
| Adams County | D | 27th |
| Butte County | D | 27th |
| Boundary County | F | 17th |
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 Power County?
Between 2015 and 2025, Power County recorded 470 outage events, averaging 2.4 hours each.
What is Power County's reliability grade?
Power County has a Reliability Grade of D, in the 22nd national percentile.
What was the worst power outage in Power County?
The worst outage on record started October 14, 2025, lasting 2 hours and affecting up to 3,827 customers.