County annual report · FIPS 29221
2021 Washington County, MO Power Outage Report
In 2021, customers in Washington County, MO went without power for an average of 6.6 hours, a total of 67K customer-hours (Missouri average 4.5 hours). That ranks 34th worst of 115 Missouri counties and 1080th 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 Washington 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 | October 22, 2021 12:45 | October 22, 2021 17:00 | 4h 15m | 2,357 | 2,969 |
| 2 | November 12, 2021 17:45 | November 12, 2021 20:00 | 2h 15m | 2,048 | 588 |
| 3 | May 27, 2021 14:15 | May 28, 2021 02:15 | 12h | 1,869 | 7,957 |
| 4 | July 14, 2021 10:15 | July 14, 2021 21:15 | 11h | 1,680 | 3,595 |
| 5 | August 26, 2021 19:45 | August 26, 2021 20:00 | 15m | 1,208 | 302 |
| 6 | May 4, 2021 20:00 | May 4, 2021 20:15 | 15m | 1,116 | 279 |
| 7 | December 8, 2021 11:15 | December 8, 2021 22:30 | 11h 15m | 979 | 918 |
| 8 | October 13, 2021 15:30 | October 14, 2021 00:30 | 9h | 936 | 2,143 |
| 9 | September 1, 2021 02:00 | September 1, 2021 21:30 | 19h 30m | 861 | 1,689 |
| 10 | October 1, 2021 12:15 | October 1, 2021 19:15 | 7h | 789 | 540 |
Outage episodes by size in 2021: 52 reached 100+ customers, 6 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 Washington 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 |
|---|---|---|---|---|---|
| Union Electric Co - (MO) | 2021 | 4.9 hrs | 1.02 | 1.5 hrs | 0.69 |
| Crawford Electric Coop, Inc | 2021 | 3.4 hrs | 1.52 | 3.4 hrs | 1.52 |
| 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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 10,163 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. Washington County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Washington 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/washington-county