County annual report · FIPS 28127
2025 Simpson County, MS Power Outage Report
In 2025, customers in Simpson County, MS went without power for an average of 10.6 hours, a total of 168K customer-hours (Mississippi average 7.5 hours). That ranks 27th worst of 81 Mississippi counties and 757th of 3,000 nationally.
Compared with MS, the US and 2024
Coverage line is EAGLE-I's share of Mississippi customers tracked each year.
Biggest outages in Simpson County, 2025
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, 2025 23:15 | February 18, 2025 03:30 | 2d 4h | 2,744 | 16K |
| 2 | January 1, 2025 00:00 | January 3, 2025 00:00 | 2d | 2,419 | 11K |
| 3 | July 1, 2025 12:15 | July 2, 2025 23:00 | 1d 10h | 2,413 | 4,626 |
| 4 | October 19, 2025 02:15 | October 19, 2025 14:30 | 12h 15m | 1,759 | 1,421 |
| 5 | May 24, 2025 21:45 | May 28, 2025 23:45 | 4d 2h | 1,625 | 20K |
| 6 | March 31, 2025 10:15 | April 1, 2025 23:30 | 1d 13h | 1,602 | 9,456 |
| 7 | June 19, 2025 18:15 | June 20, 2025 01:30 | 7h 15m | 1,371 | 1,735 |
| 8 | July 31, 2025 11:15 | July 31, 2025 20:00 | 8h 45m | 1,244 | 767 |
| 9 | May 11, 2025 23:30 | May 12, 2025 10:00 | 10h 30m | 1,118 | 1,591 |
| 10 | June 3, 2025 11:15 | June 3, 2025 22:30 | 11h 15m | 974 | 1,161 |
Outage episodes by size in 2025: 101 reached 100+ customers, 9 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 Simpson County reported on EIA Form 861 for 2025, 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 |
| Southern Pine Electric Cooperative | 2024 | 16.7 hrs | 6.29 | 5.4 hrs | 4.48 |
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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 15,818 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. Simpson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Simpson County, MS annual power outage report, 2025, 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/2025/mississippi/simpson-county