Fremont County Power Outage History
2017–2025 · Idaho
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 28, 2020 | 8 hrs | 7,374 (61%) | Unnamed event |
| Jan 24, 2020 | 3 hrs | 7,317 (60%) | Winter Storm |
| Dec 8, 2018 | 5 hrs | 5,014 (41%) | Unnamed event |
| Aug 23, 2024 | 44 hrs | 4,576 (38%) | Thunderstorm Wind |
| Sep 7, 2017 | 1 hrs | 3,437 (28%) | Unnamed event |
Over the 9 years from 2017 to 2025, Fremont County recorded 1,313 distinct power outage events, averaging 2.3 hours per event.
The single worst outage on record in Fremont County started May 28, 2020, lasting 8 hours and leaving up to 7,374 customers without power (61% of the county) at its peak.
August has historically been the worst month for outages in Fremont County, with 178 events recorded during that month across the dataset.
Based on this history, Fremont County earns a Reliability Grade of C, placing it in the 57th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Fremont County's outage profile
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Similar counties in Idaho
Counties with the closest reliability grade and national percentile to Fremont County.
| County | Grade | National percentile |
|---|---|---|
| Owyhee County | C | 57th |
| Bingham County | C | 56th |
| Nez Perce County | C | 58th |
| Jerome County | C | 59th |
| Elmore County | C | 59th |
FAQ
How often does power go out in Fremont County?
Between 2017 and 2025, Fremont County recorded 1,313 outage events, averaging 2.3 hours each.
What is Fremont County's reliability grade?
Fremont County has a Reliability Grade of C, in the 57th national percentile.
What was the worst power outage in Fremont County?
The worst outage on record started May 28, 2020, lasting 8 hours and affecting up to 7,374 customers.