County annual report · FIPS 29183
2020 St. Charles County, MO Power Outage Report
In 2020, customers in St. Charles County, MO went without power for an average of 1.9 hours, a total of 349K customer-hours (Missouri average 2.8 hours). That ranks 80th worst of 115 Missouri counties and 2290th of 3,019 nationally.
Compared with MO, the US and 2019
Coverage line is EAGLE-I's share of Missouri customers tracked each year.
Biggest outages in St. Charles County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 25, 2020 18:00 | April 10, 2020 13:15 | 15d 19h | 22,911 | 20K |
| 2 | August 10, 2020 21:00 | August 13, 2020 23:00 | 3d 2h | 16,968 | 129K |
| 3 | July 15, 2020 20:30 | July 16, 2020 08:30 | 12h | 7,418 | 8,241 |
| 4 | July 21, 2020 01:00 | July 22, 2020 06:45 | 1d 5h | 7,098 | 5,564 |
| 5 | July 19, 2020 21:15 | July 20, 2020 09:00 | 11h 45m | 5,634 | 12K |
| 6 | November 10, 2020 12:45 | November 11, 2020 05:00 | 16h 15m | 4,088 | 4,029 |
| 7 | May 4, 2020 21:15 | May 5, 2020 08:45 | 11h 30m | 4,048 | 3,440 |
| 8 | May 23, 2020 11:30 | May 23, 2020 17:45 | 6h 15m | 3,888 | 5,855 |
| 9 | May 15, 2020 09:00 | May 15, 2020 09:45 | 45m | 3,884 | 979 |
| 10 | August 3, 2020 02:15 | August 3, 2020 06:30 | 4h 15m | 3,884 | 4,977 |
Outage episodes by size in 2020: 103 reached 100+ customers, 39 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 2020, 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) | 2020 | 2.6 hrs | 0.86 | 86 min | 0.71 |
| Cuivre River Electric Coop Inc | 2020 | 1.8 hrs | 0.98 | 1.8 hrs | 0.98 |
| 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 95% of Missouri's customers in 2020; 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, 2020, 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/2020/missouri/st-charles-county