County annual report · FIPS 29099
2023 Jefferson County, MO Power Outage Report
In 2023, customers in Jefferson County, MO went without power for an average of 7.0 hours, a total of 760K customer-hours (Missouri average 9.4 hours). That ranks 47th worst of 114 Missouri counties and 1140th 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 Jefferson 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 | April 15, 2023 17:15 | April 18, 2023 04:45 | 2d 11h | 12,784 | 195K |
| 2 | July 16, 2023 19:45 | July 19, 2023 03:45 | 2d 8h | 8,948 | 102K |
| 3 | July 29, 2023 17:15 | August 2, 2023 04:15 | 3d 11h | 6,730 | 107K |
| 4 | June 30, 2023 12:45 | July 6, 2023 02:00 | 5d 13h | 5,749 | 131K |
| 5 | July 14, 2023 21:15 | July 15, 2023 00:00 | 2h 45m | 4,573 | 2,312 |
| 6 | July 11, 2023 21:30 | July 12, 2023 22:30 | 1d 1h | 3,098 | 4,611 |
| 7 | October 30, 2023 02:00 | October 30, 2023 04:30 | 2h 30m | 2,581 | 651 |
| 8 | March 31, 2023 00:45 | April 2, 2023 04:30 | 2d 3h | 2,550 | 40K |
| 9 | January 25, 2023 03:45 | January 26, 2023 22:45 | 1d 19h | 1,936 | 11K |
| 10 | June 4, 2023 19:45 | June 5, 2023 18:15 | 22h 30m | 1,924 | 4,067 |
Outage episodes by size in 2023: 113 reached 100+ customers, 24 reached 1,000+ customers, 1 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 Jefferson 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 |
| Crawford Electric Coop, Inc | 2023 | 19.4 hrs | 3.38 | 5.1 hrs | 1.99 |
| Citizens Electric Corporation - (MO) | 2023 | 5.6 hrs | 1.79 | 2.7 hrs | 1.32 |
| 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 ÷ 108,266 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. Jefferson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson 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/jefferson-county