Mills CountyPower Outage History
2018–2025 · Texas
Top 20% most reliable nationally — infrequent, short outages. This county ranks in the most reliable fifth of all US counties in our dataset, based on 12 years of real DOE outage records: outages happen less often here, and when they do occur they tend to be resolved quickly compared to the rest of the country. Baseline outage risk is low, though a severe local storm can still occasionally cause a longer-than-usual outage regardless of the long-term track record.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 9, 2019 | 21 hrs | 593 (17%) | Unnamed event |
| Jul 23, 2018 | 3 hrs | 448 (13%) | Drought |
| May 22, 2024 | <1 hr | 264 (8%) | Hail |
| May 11, 2021 | 8 hrs | 252 (7%) | Hail |
| Feb 15, 2021 | 61 hrs | 246 (7%) | Winter Storm Uri |
Over the 8 years from 2018 to 2025, Mills County recorded 149 distinct power outage events, averaging 3.6 hours per event.
The single worst outage on record in Mills County started June 9, 2019, lasting 21 hours and leaving up to 593 customers without power (17% of the county) at its peak.
May has historically been the worst month for outages in Mills County, with 31 events recorded during that month across the dataset.
Based on this history, Mills County earns a Reliability Grade of A, placing it in the 86th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Mills County's outage profile
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Read our mission →Similar counties in Texas
Counties with the closest reliability grade and national percentile to Mills County.
| County | Grade | National percentile |
|---|---|---|
| Motley County | A | 86th |
| Lampasas County | A | 86th |
| Wilson County | A | 85th |
| King County | A | 87th |
| Lamb County | A | 87th |
Most reliable counties in Texas
The top 3 counties in Texas by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Zavala County | A | 95th |
| Jasper County | A | 94th |
| Fayette County | A | 91st |
Least reliable counties in Texas
The bottom 3 counties in Texas by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Trinity County | F | 2nd |
| Orange County | F | 2nd |
| Marion County | F | 4th |
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 Mills County?
Between 2018 and 2025, Mills County recorded 149 outage events, averaging 3.6 hours each.
What is Mills County's reliability grade?
Mills County has a Reliability Grade of A, in the 86th national percentile.
What was the worst power outage in Mills County?
The worst outage on record started June 9, 2019, lasting 21 hours and affecting up to 593 customers.