PowerOutageHistory
B

Iron County Power Outage History

2017–2025 · Utah

Better than average — fewer or shorter outages than most counties. How grades are calculated

Total events
386
Avg duration
2.2 hrs
Longest outage
40 hrs
National percentile
66th

Outages by year

Outages by month (seasonality)

Worst outage events on record

DateDurationCustomers affectedCause
Jul 31, 20243 hrs16,770 (61%)Flash Flood
Aug 2, 20243 hrs6,817 (25%)Thunderstorm Wind
Aug 14, 20242 hrs6,366 (23%)Unnamed event
Feb 29, 20247 hrs5,823 (21%)Unnamed event
Aug 8, 20241 hrs4,751 (17%)Thunderstorm Wind

Over the 9 years from 2017 to 2025, Iron County recorded 386 distinct power outage events, averaging 2.2 hours per event.

The single worst outage on record in Iron County started July 31, 2024 (Flash Flood), lasting 3 hours and leaving up to 16,770 customers without power (61% of the county) at its peak.

July has historically been the worst month for outages in Iron County, with 54 events recorded during that month across the dataset.

Based on this history, Iron County earns a Reliability Grade of B, placing it in the 66th percentile nationally for grid reliability (higher percentile = more reliable).

Sized for Iron County's outage profile

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Similar counties in Utah

Counties with the closest reliability grade and national percentile to Iron County.

CountyGradeNational percentile
Sanpete CountyB65th
Millard CountyB63rd
Tooele CountyB70th
Box Elder CountyB62nd
Salt Lake CountyB70th

FAQ

How often does power go out in Iron County?

Between 2017 and 2025, Iron County recorded 386 outage events, averaging 2.2 hours each.

What is Iron County's reliability grade?

Iron County has a Reliability Grade of B, in the 66th national percentile.

What was the worst power outage in Iron County?

The worst outage on record started July 31, 2024 (Flash Flood), lasting 3 hours and affecting up to 16,770 customers.

Data: ORNL EAGLE-I Recorded Electricity Outages (2014–2025), CC BY 4.0. Storm names: NOAA Storm Events Database. Last data refresh: 2025. See methodology.