Cass 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 |
|---|---|---|---|
| Jun 3, 2024 | 49 hrs | 11,027 (51%) | Flash Flood |
| Mar 4, 2025 | 57 hrs | 10,547 (48%) | Unnamed event |
| Apr 25, 2019 | 1 hrs | 9,462 (43%) | Unnamed event |
| Jun 15, 2023 | 198 hrs | 8,589 (39%) | Thunderstorm Wind |
| Jun 14, 2018 | <1 hr | 8,512 (39%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Cass County, Texas that day.
Over the 12 years from 2014 to 2025, Cass County recorded 1,305 distinct power outage events, averaging 3.2 hours per event.
The single worst outage on record in Cass County started June 3, 2024 (Flash Flood), lasting 49 hours and leaving up to 11,027 customers without power (51% of the county) at its peak.
May has historically been the worst month for outages in Cass County, with 170 events recorded during that month across the dataset.
Based on this history, Cass County earns a Reliability Grade of F, placing it in the 11th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Texas
Counties with the closest reliability grade and national percentile to Cass County.
| County | Grade | National percentile |
|---|---|---|
| Rusk County | F | 11th |
| Gillespie County | F | 10th |
| 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 Cass County?
Between 2014 and 2025, Cass County recorded 1,305 outage events, averaging 3.2 hours each.
What is Cass County's reliability grade?
Cass County has a Reliability Grade of F, in the 11th national percentile.
What was the worst power outage in Cass County?
The worst outage on record started June 3, 2024 (Flash Flood), lasting 49 hours and affecting up to 11,027 customers.