County annual report · FIPS 28065
2021 Jefferson Davis County, MS Power Outage Report
In 2021, customers in Jefferson Davis County, MS went without power for an average of 49.3 hours, a total of 270K customer-hours (Mississippi average 17.2 hours). That ranks 15th worst of 78 Mississippi counties and 185th of 2,974 nationally.
Compared with MS, the US and 2020
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Jefferson Davis 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 | February 15, 2021 11:15 | February 21, 2021 22:00 | 6d 10h | 4,408 | 211K |
| 2 | March 17, 2021 21:45 | March 18, 2021 07:30 | 9h 45m | 1,955 | 4,600 |
| 3 | August 30, 2021 05:15 | August 31, 2021 23:15 | 1d 18h | 1,695 | 26K |
| 4 | June 19, 2021 10:15 | June 19, 2021 22:30 | 12h 15m | 914 | 3,118 |
| 5 | July 25, 2021 11:30 | July 25, 2021 13:15 | 1h 45m | 910 | 1,593 |
| 6 | July 12, 2021 00:00 | July 12, 2021 07:00 | 7h | 690 | 2,098 |
| 7 | December 19, 2021 00:00 | December 19, 2021 08:00 | 8h | 567 | 2,481 |
| 8 | July 27, 2021 02:00 | July 27, 2021 11:30 | 9h 30m | 561 | 4,581 |
| 9 | June 13, 2021 21:30 | June 14, 2021 05:45 | 8h 15m | 518 | 989 |
| 10 | February 11, 2021 10:00 | February 11, 2021 17:00 | 7h | 285 | 512 |
Outage episodes by size in 2021: 26 reached 100+ customers, 3 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 Davis 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 |
|---|---|---|---|---|---|
| Entergy Mississippi LLC | 2021 | 22.9 hrs | 2.44 | 4.7 hrs | 1.50 |
| Mississippi Power Co | 2021 | 5.9 hrs | 1.65 | 82 min | 1.01 |
| Pearl River Valley El Pwr Assn | 2021 | 6.8 hrs | 2.45 | 2.5 hrs | 1.80 |
| Southern Pine Electric Cooperative | - | - | - | - | - |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 5,468 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 Davis County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson Davis County, MS 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/mississippi/jefferson-davis-county