County annual report · FIPS 29053
2025 Cooper County, MO Power Outage Report
In 2025, customers in Cooper County, MO went without power for an average of 6.9 hours, a total of 54K customer-hours (Missouri average 8.9 hours). That ranks 49th worst of 115 Missouri counties and 1166th 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 Cooper 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 | January 5, 2025 05:30 | January 6, 2025 02:00 | 20h 30m | 1,551 | 9,019 |
| 2 | April 2, 2025 13:15 | April 3, 2025 05:30 | 16h 15m | 1,090 | 11K |
| 3 | June 3, 2025 21:45 | June 4, 2025 16:15 | 18h 30m | 887 | 4,248 |
| 4 | March 5, 2025 09:45 | March 5, 2025 22:45 | 13h | 867 | 3,887 |
| 5 | December 18, 2025 14:30 | December 18, 2025 19:30 | 5h | 760 | 1,294 |
| 6 | May 25, 2025 18:30 | May 26, 2025 08:45 | 14h 15m | 661 | 3,574 |
| 7 | March 14, 2025 19:30 | March 15, 2025 21:30 | 1d 2h | 564 | 2,655 |
| 8 | August 8, 2025 20:00 | August 8, 2025 22:15 | 2h 15m | 468 | 844 |
| 9 | April 3, 2025 12:30 | April 3, 2025 19:00 | 6h 30m | 432 | 1,019 |
| 10 | November 29, 2025 22:00 | November 29, 2025 22:15 | 15m | 430 | 108 |
Outage episodes by size in 2025: 26 reached 100+ customers, 2 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 Cooper 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 |
| Co-Mo Electric Coop Inc | 2024 | 2.0 hrs | 0.87 | 74 min | 0.72 |
| Ameren | - | - | - | - | - |
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 ÷ 7,941 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. Cooper County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cooper 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/cooper-county