County annual report · FIPS 28063
2022 Jefferson County, MS Power Outage Report
In 2022, customers in Jefferson County, MS went without power for an average of 34.6 hours, a total of 139K customer-hours (Mississippi average 6.3 hours). That ranks 3rd worst of 79 Mississippi counties and 138th of 2,976 nationally.
Compared with MS, the US and 2021
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Jefferson County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 30, 2022 12:00 | January 1, 2023 00:00 | 1d 12h | 2,512 | 15K |
| 2 | April 18, 2022 00:00 | April 22, 2022 13:30 | 4d 13h | 2,300 | 36K |
| 3 | May 13, 2022 18:00 | May 25, 2022 19:30 | 12d 1h | 2,178 | 14K |
| 4 | March 30, 2022 15:45 | March 31, 2022 16:30 | 1d | 1,444 | 3,873 |
| 5 | July 10, 2022 06:30 | July 14, 2022 20:45 | 4d 14h | 1,277 | 12K |
| 6 | April 11, 2022 10:30 | April 11, 2022 11:15 | 45m | 1,231 | 923 |
| 7 | March 18, 2022 00:45 | March 28, 2022 13:30 | 10d 12h | 1,005 | 9,866 |
| 8 | August 22, 2022 13:45 | August 30, 2022 20:00 | 8d 6h | 775 | 4,861 |
| 9 | June 12, 2022 20:15 | June 12, 2022 21:45 | 1h 30m | 758 | 1,137 |
| 10 | June 10, 2022 16:45 | June 10, 2022 18:15 | 1h 30m | 571 | 589 |
Outage episodes by size in 2022: 43 reached 100+ customers, 7 reached 1,000+ customers, 0 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 2022, 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 |
|---|---|---|---|---|---|
| Entergy Mississippi LLC | 2022 | 12.2 hrs | 2.38 | 5.5 hrs | 1.78 |
| Southwest Mississippi E P A | 2022 | 30.2 hrs | - | 25.9 hrs | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 77% of Mississippi's customers in 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,028 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 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson County, MS annual power outage report, 2022, 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2022/mississippi/jefferson-county