County annual report · FIPS 29099
2018 Jefferson County, MO Power Outage Report
In 2018, customers in Jefferson County, MO went without power for an average of 0.0 hours, a total of 143 customer-hours (Missouri average 1.7 hours). That ranks 94th worst of 96 Missouri counties and 2778th 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 Jefferson 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 | March 12, 2018 18:45 | March 12, 2018 19:00 | 15m | 115 | 29 |
| 2 | March 20, 2018 21:15 | March 20, 2018 21:30 | 15m | 29 | 7 |
| 3 | February 21, 2018 04:30 | February 21, 2018 05:00 | 30m | 14 | 7 |
| 4 | February 21, 2018 06:45 | February 21, 2018 07:00 | 15m | 14 | 4 |
| 5 | February 20, 2018 10:30 | February 20, 2018 14:00 | 3h 30m | 6 | 21 |
| 6 | April 23, 2018 15:45 | April 23, 2018 21:15 | 5h 30m | 6 | 32 |
| 7 | June 15, 2018 00:15 | June 15, 2018 03:00 | 2h 45m | 6 | 17 |
| 8 | July 15, 2018 02:15 | July 15, 2018 06:00 | 3h 45m | 6 | 23 |
| 9 | July 20, 2018 14:00 | July 20, 2018 14:45 | 45m | 6 | 5 |
| 10 | July 10, 2018 15:45 | July 10, 2018 16:15 | 30m | 1 | 1 |
Outage episodes by size in 2018: 1 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 Jefferson 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 |
| Crawford Electric Coop, Inc | 2018 | 5.0 hrs | 2.12 | 5.0 hrs | 2.12 |
| Citizens Electric Corporation - (MO) | 2018 | 2.3 hrs | - | 1.7 hrs | - |
| 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 ÷ 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, 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/jefferson-county