Washington County Power Outage History
2017–2025 · Utah
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 31, 2017 | 1 hrs | 10,116 (12%) | Unnamed event |
| Nov 9, 2018 | 6 hrs | 5,751 (7%) | Unnamed event |
| Dec 18, 2018 | 7 hrs | 5,734 (7%) | Unnamed event |
| Sep 5, 2017 | 5 hrs | 5,504 (7%) | Unnamed event |
| Jan 31, 2023 | 2 hrs | 5,475 (6%) | Unnamed event |
Over the 9 years from 2017 to 2025, Washington County recorded 314 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in Washington County started August 31, 2017, lasting 1 hours and leaving up to 10,116 customers without power (12% of the county) at its peak.
July has historically been the worst month for outages in Washington County, with 42 events recorded during that month across the dataset.
Based on this history, Washington County earns a Reliability Grade of A, placing it in the 92nd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Washington 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 Washington County.
| County | Grade | National percentile |
|---|---|---|
| Wasatch County | A | 92nd |
| Utah County | A | 91st |
| Wayne County | A | 94th |
| Uintah County | A | 88th |
| Duchesne County | A | 97th |
FAQ
How often does power go out in Washington County?
Between 2017 and 2025, Washington County recorded 314 outage events, averaging 2.7 hours each.
What is Washington County's reliability grade?
Washington County has a Reliability Grade of A, in the 92nd national percentile.
What was the worst power outage in Washington County?
The worst outage on record started August 31, 2017, lasting 1 hours and affecting up to 10,116 customers.