County annual report · FIPS 01073
2021 Jefferson County, AL Power Outage Report
In 2021, customers in Jefferson County, AL went without power for an average of 5.3 hours, a total of 2.0M customer-hours (Alabama average 4.6 hours). That ranks 29th worst of 65 Alabama counties and 1275th of 2,974 nationally.
Compared with AL, the US and 2020
Coverage line is EAGLE-I's share of Alabama customers tracked each year.
Biggest outages in Jefferson County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 23, 2021 12:45 | April 3, 2021 10:30 | 10d 21h | 11,254 | 324K |
| 2 | September 12, 2021 04:45 | September 28, 2021 07:30 | 16d 2h | 10,897 | 49K |
| 3 | September 28, 2021 13:00 | October 10, 2021 01:15 | 11d 12h | 10,846 | 104K |
| 4 | May 4, 2021 17:45 | May 15, 2021 06:30 | 10d 12h | 10,628 | 166K |
| 5 | July 15, 2021 12:15 | August 14, 2021 06:00 | 29d 17h | 10,189 | 210K |
| 6 | January 20, 2021 11:15 | January 30, 2021 04:45 | 9d 17h | 9,531 | 161K |
| 7 | April 19, 2021 12:00 | April 27, 2021 17:45 | 8d 5h | 6,137 | 76K |
| 8 | June 5, 2021 08:30 | June 13, 2021 10:45 | 8d 2h | 5,762 | 73K |
| 9 | June 17, 2021 08:45 | June 24, 2021 09:00 | 7d | 5,533 | 94K |
| 10 | March 17, 2021 09:15 | March 23, 2021 05:00 | 5d 19h | 5,211 | 65K |
Outage episodes by size in 2021: 74 reached 100+ customers, 45 reached 1,000+ customers, 5 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Jefferson County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Alabama Power Co | - | - | - | - | - |
| City of Bessemer Utilities | - | - | - | - | - |
| City of Tarrant | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 81% of Alabama's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 372,757 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Jefferson County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Jefferson County, AL annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/). https://massoutage.com/reports/2021/alabama/jefferson-county