Grayson County Power Outage History
2014–2025 · Texas
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 9, 2025 | 34 hrs | 19,362 (26%) | Hail |
| Feb 15, 2021 | 78 hrs | 19,236 (26%) | Winter Storm Uri |
| Jun 1, 2015 | 1 hrs | 18,800 (26%) | Tornado |
| Sep 6, 2025 | 23 hrs | 18,332 (25%) | Tropical Storm Lorena |
| Sep 13, 2021 | 1 hrs | 17,172 (23%) | Unnamed event |
Over the 12 years from 2014 to 2025, Grayson County recorded 787 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Grayson County started June 9, 2025 (Hail), lasting 34 hours and leaving up to 19,362 customers without power (26% of the county) at its peak.
May has historically been the worst month for outages in Grayson County, with 112 events recorded during that month across the dataset.
Based on this history, Grayson County earns a Reliability Grade of C, placing it in the 54th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Grayson County's outage profile
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Similar counties in Texas
Counties with the closest reliability grade and national percentile to Grayson County.
| County | Grade | National percentile |
|---|---|---|
| Crosby County | C | 54th |
| Tarrant County | C | 54th |
| Hidalgo County | C | 55th |
| Kent County | C | 53rd |
| Williamson County | C | 53rd |
FAQ
How often does power go out in Grayson County?
Between 2014 and 2025, Grayson County recorded 787 outage events, averaging 2.4 hours each.
What is Grayson County's reliability grade?
Grayson County has a Reliability Grade of C, in the 54th national percentile.
What was the worst power outage in Grayson County?
The worst outage on record started June 9, 2025 (Hail), lasting 34 hours and affecting up to 19,362 customers.