Cass CountyPower Outage History
What this grade means
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 |
|---|---|---|---|
| Dec 28, 2015 | 28 hrs | 1,131 (5%) | Winter Weather |
| Dec 27, 2022 | 3 hrs | 1,041 (4%) | Winter Storm |
| May 26, 2019 | 4 hrs | 921 (4%) | Thunderstorm Wind |
| Apr 15, 2019 | 2 hrs | 897 (4%) | Unnamed event |
| Nov 5, 2022 | 2 hrs | 886 (4%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Cass County, Indiana that day.
Over the 11 years from 2015 to 2025, Cass County recorded 74 distinct power outage events, averaging 2.9 hours per event.
The single worst outage on record in Cass County started December 28, 2015 (Winter Weather), lasting 28 hours and leaving up to 1,131 customers without power (5% of the county) at its peak.
June has historically been the worst month for outages in Cass County, with 11 events recorded during that month across the dataset.
Based on this history, Cass County earns a Reliability Grade of A, placing it in the 96th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Indiana
Counties with the closest reliability grade and national percentile to Cass County.
| County | Grade | National percentile |
|---|---|---|
| Daviess County | A | 95th |
| Boone County | A | 95th |
| Jasper County | A | 94th |
| Perry County | Not ranked | — |
| Miami County | A | 92nd |
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 2015 and 2025, Cass County recorded 74 outage events, averaging 2.9 hours each.
What is Cass County's reliability grade?
Cass County has a Reliability Grade of A, in the 96th national percentile.
What was the worst power outage in Cass County?
The worst outage on record started December 28, 2015 (Winter Weather), lasting 28 hours and affecting up to 1,131 customers.