Emery CountyPower Outage History
2017–2025 · Utah
Better than average — fewer or shorter outages than most counties.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 19, 2018 | 2 hrs | 2,605 (66%) | Flash Flood |
| Dec 6, 2017 | 1 hrs | 2,588 (66%) | Unnamed event |
| Apr 22, 2018 | 2 hrs | 2,356 (60%) | Unnamed event |
| Dec 22, 2022 | 2 hrs | 2,324 (59%) | High Wind |
| Aug 29, 2019 | 2 hrs | 1,965 (50%) | Unnamed event |
Over the 9 years from 2017 to 2025, Emery County recorded 240 distinct power outage events, averaging 2.0 hours per event.
The single worst outage on record in Emery County started July 19, 2018 (Flash Flood), lasting 2 hours and leaving up to 2,605 customers without power (66% of the county) at its peak.
August has historically been the worst month for outages in Emery County, with 38 events recorded during that month across the dataset.
Based on this history, Emery County earns a Reliability Grade of B, placing it in the 72nd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Emery County's outage profile
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Outage-prep kit
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Similar counties in Utah
Counties with the closest reliability grade and national percentile to Emery County.
| County | Grade | National percentile |
|---|---|---|
| Juab County | B | 71st |
| Sevier County | B | 72nd |
| Carbon County | B | 70th |
| Salt Lake County | B | 70th |
| Tooele County | B | 70th |
Most reliable counties in Utah
The top 3 counties in Utah by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Daggett County | A | 98th |
| Kane County | A | 98th |
| Duchesne County | A | 97th |
Least reliable counties in Utah
The bottom 3 counties in Utah by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Morgan County | D | 25th |
| Beaver County | D | 34th |
| Summit County | D | 36th |
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 Emery County?
Between 2017 and 2025, Emery County recorded 240 outage events, averaging 2.0 hours each.
What is Emery County's reliability grade?
Emery County has a Reliability Grade of B, in the 72nd national percentile.
What was the worst power outage in Emery County?
The worst outage on record started July 19, 2018 (Flash Flood), lasting 2 hours and affecting up to 2,605 customers.