Pettis 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 |
|---|---|---|---|
| Sep 14, 2023 | <1 hr | 4,953 (17%) | Drought |
| Jan 5, 2025 | 7 hrs | 4,293 (15%) | Winter Storm |
| Aug 23, 2024 | <1 hr | 3,542 (12%) | Unnamed event |
| Jul 26, 2023 | 2 hrs | 3,296 (11%) | Drought |
| Sep 28, 2023 | <1 hr | 3,293 (11%) | Drought |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Pettis County, Missouri that day.
Over the 11 years from 2015 to 2025, Pettis County recorded 431 distinct power outage events, averaging 2.0 hours per event.
The single worst outage on record in Pettis County started September 14, 2023 (Drought), lasting less than 1 hour and leaving up to 4,953 customers without power (17% of the county) at its peak.
June has historically been the worst month for outages in Pettis County, with 59 events recorded during that month across the dataset.
Based on this history, Pettis County earns a Reliability Grade of A, placing it in the 89th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Missouri
Counties with the closest reliability grade and national percentile to Pettis County.
| County | Grade | National percentile |
|---|---|---|
| Saline County | A | 89th |
| Butler County | A | 89th |
| St. Charles County | A | 88th |
| Macon County | A | 90th |
| Polk County | A | 87th |
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 Pettis County?
Between 2015 and 2025, Pettis County recorded 431 outage events, averaging 2.0 hours each.
What is Pettis County's reliability grade?
Pettis County has a Reliability Grade of A, in the 89th national percentile.
What was the worst power outage in Pettis County?
The worst outage on record started September 14, 2023 (Drought), lasting less than 1 hour and affecting up to 4,953 customers.