Sevier CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Mar 29, 2017 | 2 hrs | 6,708 (81%) | Unnamed event |
| Apr 17, 2019 | 2 hrs | 3,225 (39%) | Unnamed event |
| Jul 22, 2021 | 2 hrs | 2,243 (27%) | Heavy Rain |
| Oct 12, 2021 | 9 hrs | 2,084 (25%) | Unnamed event |
| Jul 16, 2025 | 3 hrs | 2,040 (25%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Sevier County, Utah that day.
Over the 9 years from 2017 to 2025, Sevier County recorded 285 distinct power outage events, averaging 2.0 hours per event.
The single worst outage on record in Sevier County started March 29, 2017, lasting 2 hours and leaving up to 6,708 customers without power (81% of the county) at its peak.
August has historically been the worst month for outages in Sevier County, with 41 events recorded during that month across the dataset.
Based on this history, Sevier County earns a Reliability Grade of B, placing it in the 72nd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Utah
Counties with the closest reliability grade and national percentile to Sevier County.
| County | Grade | National percentile |
|---|---|---|
| Emery County | B | 72nd |
| Juab County | B | 71st |
| Carbon County | B | 70th |
| Salt Lake County | B | 70th |
| Garfield County | B | 75th |
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 Sevier County?
Between 2017 and 2025, Sevier County recorded 285 outage events, averaging 2.0 hours each.
What is Sevier County's reliability grade?
Sevier County has a Reliability Grade of B, in the 72nd national percentile.
What was the worst power outage in Sevier County?
The worst outage on record started March 29, 2017, lasting 2 hours and affecting up to 6,708 customers.