County annual report · FIPS 29183
2025 St. Charles County, MO Power Outage Report
In 2025, customers in St. Charles County, MO went without power for an average of 2.3 hours, a total of 427K customer-hours (Missouri average 8.9 hours). That ranks 92nd worst of 115 Missouri counties and 2290th 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 St. Charles 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 21, 2025 04:15 | February 21, 2025 16:15 | 12h | 9,269 | 25K |
| 2 | July 6, 2025 20:45 | July 8, 2025 11:15 | 1d 14h | 6,361 | 53K |
| 3 | June 17, 2025 12:15 | June 20, 2025 18:30 | 3d 6h | 4,996 | 30K |
| 4 | June 4, 2025 20:00 | June 6, 2025 11:00 | 1d 15h | 4,698 | 9,111 |
| 5 | November 18, 2025 00:30 | November 18, 2025 23:00 | 22h 30m | 4,137 | 3,541 |
| 6 | March 14, 2025 17:45 | March 20, 2025 20:30 | 6d 2h | 3,346 | 75K |
| 7 | May 16, 2025 12:45 | May 18, 2025 04:00 | 1d 15h | 3,188 | 9,207 |
| 8 | May 20, 2025 01:30 | May 20, 2025 16:15 | 14h 45m | 3,016 | 4,010 |
| 9 | December 14, 2025 19:15 | December 14, 2025 22:15 | 3h | 2,780 | 6,505 |
| 10 | September 10, 2025 12:45 | September 18, 2025 23:45 | 8d 11h | 2,693 | 5,111 |
Outage episodes by size in 2025: 105 reached 100+ customers, 32 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 St. Charles 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 |
| Cuivre River Electric Coop Inc | 2024 | 2.2 hrs | 1.27 | 2.2 hrs | 1.27 |
| 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 ÷ 181,803 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. St. Charles County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), St. Charles 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/st-charles-county