Gillespie County Power Outage History
2018–2025 · Texas
Bottom 20% least reliable nationally — frequent and/or long outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Feb 18, 2021 | 30 hrs | 9,335 (55%) | Winter Storm Uri |
| Feb 16, 2021 | 40 hrs | 9,010 (53%) | Winter Storm Uri |
| Feb 11, 2021 | 120 hrs | 8,500 (50%) | Winter Storm Uri |
| Feb 19, 2021 | 2 hrs | 6,826 (40%) | Winter Storm Uri |
| Feb 20, 2021 | 90 hrs | 5,763 (34%) | Winter Storm Uri |
Over the 8 years from 2018 to 2025, Gillespie County recorded 308 distinct power outage events, averaging 3.9 hours per event.
The single worst outage on record in Gillespie County started February 18, 2021 (Winter Storm Uri), lasting 30 hours and leaving up to 9,335 customers without power (55% of the county) at its peak.
May has historically been the worst month for outages in Gillespie County, with 44 events recorded during that month across the dataset.
Based on this history, Gillespie County earns a Reliability Grade of F, placing it in the 10th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Gillespie County's outage profile
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Similar counties in Texas
Counties with the closest reliability grade and national percentile to Gillespie County.
| County | Grade | National percentile |
|---|---|---|
| Rusk County | F | 11th |
| Cass County | F | 11th |
| Montgomery County | F | 11th |
| Madison County | F | 10th |
| Walker County | F | 12th |
FAQ
How often does power go out in Gillespie County?
Between 2018 and 2025, Gillespie County recorded 308 outage events, averaging 3.9 hours each.
What is Gillespie County's reliability grade?
Gillespie County has a Reliability Grade of F, in the 10th national percentile.
What was the worst power outage in Gillespie County?
The worst outage on record started February 18, 2021 (Winter Storm Uri), lasting 30 hours and affecting up to 9,335 customers.