Shelby County Power Outage History
2015–2025 · Texas
Worse than average — more frequent or longer outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 31, 2024 | 74 hrs | 4,178 (29%) | Thunderstorm Wind |
| Jul 8, 2024 | 47 hrs | 4,164 (29%) | Tropical Storm Beryl |
| Jun 16, 2023 | 44 hrs | 3,770 (26%) | Thunderstorm Wind |
| Aug 27, 2020 | 71 hrs | 3,727 (26%) | Hurricane Laura |
| Jun 8, 2025 | 51 hrs | 3,609 (25%) | Thunderstorm Wind |
Over the 11 years from 2015 to 2025, Shelby County recorded 475 distinct power outage events, averaging 4.3 hours per event.
The single worst outage on record in Shelby County started May 31, 2024 (Thunderstorm Wind), lasting 74 hours and leaving up to 4,178 customers without power (29% of the county) at its peak.
May has historically been the worst month for outages in Shelby County, with 58 events recorded during that month across the dataset.
Based on this history, Shelby County earns a Reliability Grade of D, placing it in the 32nd percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Texas
Counties with the closest reliability grade and national percentile to Shelby County.
| County | Grade | National percentile |
|---|---|---|
| Hopkins County | D | 32nd |
| Comanche County | D | 31st |
| Burleson County | D | 32nd |
| Travis County | D | 31st |
| Pecos County | D | 32nd |
FAQ
How often does power go out in Shelby County?
Between 2015 and 2025, Shelby County recorded 475 outage events, averaging 4.3 hours each.
What is Shelby County's reliability grade?
Shelby County has a Reliability Grade of D, in the 32nd national percentile.
What was the worst power outage in Shelby County?
The worst outage on record started May 31, 2024 (Thunderstorm Wind), lasting 74 hours and affecting up to 4,178 customers.