Karnes CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 25, 2022 | 23 hrs | 2,859 (28%) | Drought |
| May 22, 2023 | 2 hrs | 2,457 (24%) | Unnamed event |
| Mar 21, 2015 | <1 hr | 1,817 (18%) | Flash Flood |
| May 4, 2019 | 3 hrs | 1,660 (16%) | Unnamed event |
| Feb 14, 2021 | 88 hrs | 1,594 (16%) | Winter Storm Uri |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Karnes County, Texas that day.
Over the 12 years from 2014 to 2025, Karnes County recorded 450 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Karnes County started May 25, 2022 (Drought), lasting 23 hours and leaving up to 2,859 customers without power (28% of the county) at its peak.
May has historically been the worst month for outages in Karnes County, with 57 events recorded during that month across the dataset.
Based on this history, Karnes County earns a Reliability Grade of B, placing it in the 68th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Texas
Counties with the closest reliability grade and national percentile to Karnes County.
| County | Grade | National percentile |
|---|---|---|
| Kendall County | B | 68th |
| Hamilton County | B | 68th |
| Crane County | B | 67th |
| DeWitt County | B | 67th |
| Stonewall County | B | 69th |
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 Karnes County?
Between 2014 and 2025, Karnes County recorded 450 outage events, averaging 2.4 hours each.
What is Karnes County's reliability grade?
Karnes County has a Reliability Grade of B, in the 68th national percentile.
What was the worst power outage in Karnes County?
The worst outage on record started May 25, 2022 (Drought), lasting 23 hours and affecting up to 2,859 customers.