County annual report · FIPS 28063
2024 Jefferson County, MS Power Outage Report
In 2024, customers in Jefferson County, MS went without power for an average of 51.5 hours, a total of 207K customer-hours (Mississippi average 9.2 hours). That ranks 5th worst of 82 Mississippi counties and 196th of 2,990 nationally.
Compared with MS, the US and 2023
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Jefferson County, 2024
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 27, 2024 03:15 | January 1, 2025 00:00 | 4d 20h | 2,277 | 83K |
| 2 | May 13, 2024 07:00 | May 24, 2024 00:15 | 10d 17h | 2,258 | 36K |
| 3 | May 24, 2024 09:15 | June 5, 2024 19:00 | 12d 9h | 1,486 | 24K |
| 4 | January 24, 2024 11:30 | January 25, 2024 01:00 | 13h 30m | 1,256 | 3,602 |
| 5 | August 19, 2024 03:00 | August 21, 2024 22:00 | 2d 19h | 802 | 3,213 |
| 6 | January 12, 2024 12:45 | January 13, 2024 00:30 | 11h 45m | 798 | 2,005 |
| 7 | January 8, 2024 21:15 | January 10, 2024 20:15 | 1d 23h | 724 | 4,395 |
| 8 | July 5, 2024 13:15 | July 9, 2024 11:45 | 3d 22h | 645 | 3,498 |
| 9 | August 9, 2024 03:15 | August 9, 2024 05:15 | 2h | 638 | 1,276 |
| 10 | September 12, 2024 07:15 | September 13, 2024 19:30 | 1d 12h | 499 | 3,355 |
Outage episodes by size in 2024: 39 reached 100+ customers, 4 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 2024, 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 | 2024 | 11.5 hrs | 2.31 | 5.5 hrs | 1.75 |
| Southwest Mississippi E P A | 2024 | 61.2 hrs | - | 29.2 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 n/a of Mississippi's customers in 2024; 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, 2024, 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/2024/mississippi/jefferson-county