Jefferson 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 |
|---|---|---|---|
| Jan 11, 2020 | 15 hrs | 52,800 (14%) | Unnamed event |
| Jun 28, 2018 | 27 hrs | 47,818 (13%) | Unnamed event |
| Jun 7, 2025 | 53 hrs | 39,648 (11%) | Unnamed event |
| Mar 4, 2025 | 55 hrs | 39,184 (11%) | Strong Wind |
| Apr 12, 2020 | 62 hrs | 34,661 (9%) | Unnamed event |
Over the 9 years from 2017 to 2025, Jefferson County recorded 4,778 distinct power outage events, averaging 2.5 hours per event.
The single worst outage on record in Jefferson County started January 11, 2020, lasting 15 hours and leaving up to 52,800 customers without power (14% of the county) at its peak.
July has historically been the worst month for outages in Jefferson County, with 546 events recorded during that month across the dataset.
Based on this history, Jefferson County earns a Reliability Grade of C, placing it in the 53rd percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Alabama
Counties with the closest reliability grade and national percentile to Jefferson County.
| County | Grade | National percentile |
|---|---|---|
| Clarke County | C | 51st |
| Etowah County | C | 56th |
| Geneva County | C | 50th |
| Choctaw County | C | 50th |
| Bullock County | C | 50th |
FAQ
How often does power go out in Jefferson County?
Between 2017 and 2025, Jefferson County recorded 4,778 outage events, averaging 2.5 hours each.
What is Jefferson County's reliability grade?
Jefferson County has a Reliability Grade of C, in the 53rd national percentile.
What was the worst power outage in Jefferson County?
The worst outage on record started January 11, 2020, lasting 15 hours and affecting up to 52,800 customers.