County annual report · FIPS 29133
2025 Mississippi County, MO Power Outage Report
In 2025, customers in Mississippi County, MO went without power for an average of 2.2 hours, a total of 13K customer-hours (Missouri average 8.9 hours). That ranks 93rd worst of 115 Missouri counties and 2357th of 3,000 nationally.
Compared with MO, the US and 2024
Coverage line is EAGLE-I's share of Missouri customers tracked each year.
Biggest outages in Mississippi 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 | May 16, 2025 21:00 | May 17, 2025 23:15 | 1d 2h | 2,557 | 2,610 |
| 2 | June 25, 2025 17:15 | June 25, 2025 18:00 | 45m | 577 | 433 |
| 3 | June 13, 2025 03:15 | June 13, 2025 05:15 | 2h | 408 | 617 |
| 4 | December 18, 2025 21:15 | December 19, 2025 02:00 | 4h 45m | 397 | 1,868 |
| 5 | December 29, 2025 00:45 | December 29, 2025 08:15 | 7h 30m | 366 | 967 |
| 6 | December 20, 2025 17:00 | December 20, 2025 22:30 | 5h 30m | 308 | 488 |
| 7 | September 6, 2025 17:00 | September 6, 2025 18:45 | 1h 45m | 286 | 410 |
| 8 | January 17, 2025 01:15 | January 17, 2025 03:00 | 1h 45m | 283 | 490 |
| 9 | January 20, 2025 13:15 | January 20, 2025 18:15 | 5h | 175 | 818 |
| 10 | September 9, 2025 00:30 | September 9, 2025 02:30 | 2h | 101 | 202 |
Outage episodes by size in 2025: 10 reached 100+ customers, 1 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 Mississippi 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 |
|---|---|---|---|---|---|
| Union Electric Co - (MO) | 2024 | 2.5 hrs | 0.77 | 1.6 hrs | 0.67 |
| Ameren | - | - | - | - | - |
| SEMO 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 n/a of Missouri's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 5,838 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. Mississippi County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mississippi County, MO 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/missouri/mississippi-county