County annual report · FIPS 29211
2025 Sullivan County, MO Power Outage Report
In 2025, customers in Sullivan County, MO went without power for an average of 4.0 hours, a total of 7,230 customer-hours (Missouri average 8.9 hours). That ranks 73rd worst of 115 Missouri counties and 1764th 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 Sullivan 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 19, 2025 22:45 | May 20, 2025 12:30 | 13h 45m | 641 | 1,488 |
| 2 | March 14, 2025 22:00 | March 15, 2025 07:00 | 9h | 568 | 2,353 |
| 3 | August 7, 2025 13:45 | August 7, 2025 17:45 | 4h | 195 | 427 |
| 4 | June 20, 2025 23:45 | June 23, 2025 17:00 | 2d 17h | 86 | 315 |
| 5 | May 28, 2025 01:15 | May 28, 2025 01:45 | 30m | 72 | 36 |
| 6 | December 2, 2025 21:45 | December 3, 2025 14:00 | 16h 15m | 63 | 344 |
| 7 | August 7, 2025 08:15 | August 7, 2025 10:00 | 1h 45m | 55 | 96 |
| 8 | June 3, 2025 21:00 | June 4, 2025 00:45 | 3h 45m | 45 | 116 |
| 9 | July 10, 2025 19:30 | July 10, 2025 19:45 | 15m | 43 | 11 |
| 10 | June 25, 2025 19:30 | June 25, 2025 21:00 | 1h 30m | 42 | 63 |
Outage episodes by size in 2025: 3 reached 100+ customers, 0 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 Sullivan 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 |
| Grundy Electric Coop, Inc | - | - | - | - | - |
| Macon Electric Coop | - | - | - | - | - |
| Tri-County Electric Coop Assn (MO) | - | - | - | - | - |
| North Central MO Elec Coop Inc | - | - | - | - | - |
| City of Milan - (MO) | - | - | - | - | - |
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 ÷ 1,796 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. Sullivan County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sullivan 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/sullivan-county