County annual report · FIPS 29183
2023 St. Charles County, MO Power Outage Report
In 2023, customers in St. Charles County, MO went without power for an average of 3.2 hours, a total of 583K customer-hours (Missouri average 9.4 hours). That ranks 76th worst of 114 Missouri counties and 1887th of 2,977 nationally.
Compared with MO, the US and 2022
Coverage line is EAGLE-I's share of Missouri customers tracked each year.
Biggest outages in St. Charles County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 29, 2023 16:30 | August 1, 2023 22:45 | 3d 6h | 24,562 | 249K |
| 2 | August 12, 2023 07:45 | August 14, 2023 22:45 | 2d 15h | 10,406 | 48K |
| 3 | July 1, 2023 08:45 | July 7, 2023 19:00 | 6d 10h | 6,863 | 53K |
| 4 | December 18, 2023 12:30 | December 18, 2023 21:15 | 8h 45m | 5,091 | 2,534 |
| 5 | July 16, 2023 11:45 | July 18, 2023 10:30 | 1d 22h | 4,787 | 11K |
| 6 | April 1, 2023 09:30 | April 2, 2023 02:00 | 16h 30m | 4,005 | 13K |
| 7 | August 5, 2023 05:15 | August 5, 2023 20:15 | 15h | 3,782 | 17K |
| 8 | June 6, 2023 12:15 | June 6, 2023 20:00 | 7h 45m | 3,746 | 979 |
| 9 | June 12, 2023 13:00 | June 12, 2023 21:00 | 8h | 3,004 | 2,033 |
| 10 | February 9, 2023 09:00 | February 9, 2023 22:45 | 13h 45m | 2,687 | 8,168 |
Outage episodes by size in 2023: 118 reached 100+ customers, 33 reached 1,000+ customers, 2 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 2023, 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) | 2023 | 8.0 hrs | 1.18 | 1.6 hrs | 0.67 |
| Cuivre River Electric Coop Inc | 2023 | 4.4 hrs | 1.61 | 2.3 hrs | 1.22 |
| 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 2023; 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, 2023, 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/2023/missouri/st-charles-county