Gillespie CountyPower Outage History
What this grade means
Bottom 20% least reliable nationally — frequent and/or long outages. This county ranks in the least reliable fifth of all US counties in our dataset: some combination of frequent outages, long restoration times, or customers affected puts it near the bottom nationally. Backup power is worth prioritizing here rather than treating it as optional.
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 |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Gillespie County, Texas that day.
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).
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 |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
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.