Sumter County Power Outage History
2017–2025 · Alabama
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 19, 2021 | 1 hrs | 3,412 (34%) | Unnamed event |
| Jul 22, 2022 | 8 hrs | 2,598 (26%) | Unnamed event |
| Oct 31, 2023 | 5 hrs | 2,596 (26%) | Unnamed event |
| May 4, 2021 | 16 hrs | 2,482 (24%) | Unnamed event |
| Oct 23, 2021 | 0 hrs | 2,066 (20%) | Unnamed event |
Over the 9 years from 2017 to 2025, Sumter County recorded 656 distinct power outage events, averaging 2.9 hours per event.
The single worst outage on record in Sumter County started October 19, 2021, lasting 1 hours and leaving up to 3,412 customers without power (34% of the county) at its peak.
June has historically been the worst month for outages in Sumter County, with 91 events recorded during that month across the dataset.
Based on this history, Sumter County earns a Reliability Grade of C, placing it in the 49th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Sumter County's outage profile
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Similar counties in Alabama
Counties with the closest reliability grade and national percentile to Sumter County.
| County | Grade | National percentile |
|---|---|---|
| Cullman County | C | 49th |
| Bullock County | C | 50th |
| Choctaw County | C | 50th |
| Geneva County | C | 50th |
| Clarke County | C | 51st |
FAQ
How often does power go out in Sumter County?
Between 2017 and 2025, Sumter County recorded 656 outage events, averaging 2.9 hours each.
What is Sumter County's reliability grade?
Sumter County has a Reliability Grade of C, in the 49th national percentile.
What was the worst power outage in Sumter County?
The worst outage on record started October 19, 2021, lasting 1 hours and affecting up to 3,412 customers.