Elmore County Power Outage History
2015–2025 · 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 |
|---|---|---|---|
| Nov 5, 2023 | 1 hrs | 7,869 (57%) | Unnamed event |
| Jun 5, 2017 | 19 hrs | 6,947 (51%) | Thunderstorm Wind |
| Dec 3, 2021 | 0 hrs | 5,613 (41%) | Unnamed event |
| Nov 14, 2019 | 1 hrs | 5,429 (39%) | Unnamed event |
| Jan 16, 2020 | 0 hrs | 5,428 (39%) | Unnamed event |
Over the 11 years from 2015 to 2025, Elmore County recorded 545 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Elmore County started November 5, 2023, lasting 1 hours and leaving up to 7,869 customers without power (57% of the county) at its peak.
June has historically been the worst month for outages in Elmore County, with 63 events recorded during that month across the dataset.
Based on this history, Elmore County earns a Reliability Grade of C, placing it in the 59th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Elmore County's outage profile
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Similar counties in Idaho
Counties with the closest reliability grade and national percentile to Elmore County.
| County | Grade | National percentile |
|---|---|---|
| Jerome County | C | 59th |
| Nez Perce County | C | 58th |
| Owyhee County | C | 57th |
| Fremont County | C | 57th |
| Bingham County | C | 56th |
FAQ
How often does power go out in Elmore County?
Between 2015 and 2025, Elmore County recorded 545 outage events, averaging 1.9 hours each.
What is Elmore County's reliability grade?
Elmore County has a Reliability Grade of C, in the 59th national percentile.
What was the worst power outage in Elmore County?
The worst outage on record started November 5, 2023, lasting 1 hours and affecting up to 7,869 customers.