County annual report · FIPS 29183
2018 St. Charles County, MO Power Outage Report
In 2018, customers in St. Charles County, MO went without power for an average of 1.1 hours, a total of 195K customer-hours (Missouri average 1.7 hours). That ranks 52nd worst of 96 Missouri counties and 2283rd of 2,798 nationally.
Compared with MO, the US and 2017
Coverage line is EAGLE-I's share of Missouri customers tracked each year.
Biggest outages in St. Charles County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 24, 2018 11:15 | August 24, 2018 19:15 | 8h | 7,973 | 5,061 |
| 2 | May 3, 2018 08:15 | May 3, 2018 14:15 | 6h | 6,981 | 3,866 |
| 3 | October 24, 2018 12:45 | October 24, 2018 20:00 | 7h 15m | 3,933 | 1,042 |
| 4 | December 27, 2018 15:00 | December 27, 2018 22:30 | 7h 30m | 3,918 | 1,209 |
| 5 | April 18, 2018 02:00 | April 18, 2018 02:30 | 30m | 2,628 | 658 |
| 6 | May 11, 2018 12:00 | May 11, 2018 23:30 | 11h 30m | 2,152 | 985 |
| 7 | March 11, 2018 17:15 | March 12, 2018 04:15 | 11h | 2,114 | 16K |
| 8 | November 30, 2018 10:00 | November 30, 2018 21:00 | 11h | 2,008 | 2,072 |
| 9 | June 14, 2018 11:00 | June 15, 2018 22:30 | 1d 11h | 2,000 | 6,107 |
| 10 | April 14, 2018 09:30 | April 14, 2018 21:00 | 11h 30m | 1,940 | 4,411 |
Outage episodes by size in 2018: 129 reached 100+ customers, 30 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 2018, 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) | 2018 | 2.3 hrs | 0.85 | 86 min | 0.72 |
| Cuivre River Electric Coop Inc | 2018 | 2.0 hrs | 0.86 | 1.5 hrs | 0.65 |
| 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 80% of Missouri's customers in 2018; 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, 2018, 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/2018/missouri/st-charles-county