County annual report · FIPS 29185
2021 St. Clair County, MO Power Outage Report
In 2021, customers in St. Clair County, MO went without power for an average of 4.1 hours, a total of 16K customer-hours (Missouri average 4.5 hours). That ranks 54th worst of 115 Missouri counties and 1528th of 2,974 nationally.
Compared with MO, the US and 2020
Coverage line is EAGLE-I's share of Missouri customers tracked each year.
Biggest outages in St. Clair County, 2021
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 16, 2021 13:30 | February 16, 2021 14:30 | 1h | 874 | 874 |
| 2 | May 14, 2021 19:15 | May 14, 2021 20:15 | 1h | 872 | 219 |
| 3 | January 1, 2021 09:15 | January 2, 2021 04:30 | 19h 15m | 605 | 2,377 |
| 4 | June 22, 2021 21:45 | June 22, 2021 23:45 | 2h | 588 | 735 |
| 5 | December 13, 2021 20:15 | December 13, 2021 21:00 | 45m | 509 | 382 |
| 6 | September 10, 2021 15:30 | September 10, 2021 17:30 | 2h | 339 | 376 |
| 7 | September 16, 2021 18:00 | September 16, 2021 21:30 | 3h 30m | 324 | 991 |
| 8 | September 1, 2021 14:15 | September 1, 2021 18:15 | 4h | 322 | 617 |
| 9 | November 19, 2021 05:15 | November 19, 2021 05:30 | 15m | 282 | 71 |
| 10 | June 26, 2021 12:30 | June 26, 2021 15:15 | 2h 45m | 233 | 480 |
Outage episodes by size in 2021: 22 reached 100+ customers, 0 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. Clair County reported on EIA Form 861 for 2021, 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 |
|---|---|---|---|---|---|
| Evergy Metro | 2021 | 4.0 hrs | 1.57 | 1.6 hrs | 0.94 |
| Evergy Missouri West | 2021 | 5.2 hrs | 1.86 | 2.3 hrs | 1.22 |
| Empire District Electric Co | 2021 | 2.4 hrs | 1.25 | 88 min | 0.98 |
| Southwest Electric Coop, Inc | 2021 | 2.3 hrs | 1.00 | 1.7 hrs | 1.00 |
| Sac-Osage Electric Coop Inc | - | - | - | - | - |
| Osage Valley Elec Coop Assn | - | - | - | - | - |
| City of Osceola - (MO) | - | - | - | - | - |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 3,837 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. Clair County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), St. Clair County, MO annual power outage report, 2021, 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/2021/missouri/st-clair-county