County annual report · FIPS 29125
2021 Maries County, MO Power Outage Report
In 2021, customers in Maries County, MO went without power for an average of 5.2 hours, a total of 17K customer-hours (Missouri average 4.5 hours). That ranks 45th worst of 115 Missouri counties and 1301st 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 Maries 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 | December 11, 2021 01:00 | December 11, 2021 17:45 | 16h 45m | 1,038 | 5,536 |
| 2 | June 11, 2021 21:45 | June 11, 2021 23:15 | 1h 30m | 563 | 845 |
| 3 | January 1, 2021 10:45 | January 2, 2021 08:15 | 21h 30m | 425 | 2,714 |
| 4 | May 10, 2021 13:45 | May 10, 2021 15:45 | 2h | 395 | 692 |
| 5 | November 21, 2021 22:15 | November 22, 2021 00:00 | 1h 45m | 231 | 392 |
| 6 | August 17, 2021 18:45 | August 17, 2021 19:30 | 45m | 228 | 115 |
| 7 | July 4, 2021 10:30 | July 4, 2021 14:15 | 3h 45m | 175 | 656 |
| 8 | November 3, 2021 20:30 | November 3, 2021 22:45 | 2h 15m | 155 | 44 |
| 9 | January 3, 2021 05:00 | January 3, 2021 08:30 | 3h 30m | 141 | 385 |
| 10 | October 11, 2021 11:45 | October 11, 2021 15:00 | 3h 15m | 113 | 292 |
Outage episodes by size in 2021: 12 reached 100+ customers, 1 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 Maries 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 |
| Intercounty Electric Coop Assn - (MO) | 2021 | 2.7 hrs | 1.45 | 2.0 hrs | 1.28 |
| Three Rivers Electric Coop | 2021 | 1.6 hrs | 0.72 | 71 min | 0.65 |
| Gascosage Electric Coop | - | - | - | - | - |
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 ÷ 3,269 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. Maries County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Maries 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/maries-county