County annual report · FIPS 29093
2021 Iron County, MO Power Outage Report
In 2021, customers in Iron County, MO went without power for an average of 6.0 hours, a total of 34K customer-hours (Missouri average 4.5 hours). That ranks 38th worst of 115 Missouri counties and 1159th 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 Iron 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 | November 13, 2021 23:30 | November 14, 2021 02:45 | 3h 15m | 2,346 | 1,182 |
| 2 | March 22, 2021 11:30 | March 22, 2021 12:00 | 30m | 1,559 | 390 |
| 3 | August 10, 2021 09:00 | August 10, 2021 15:15 | 6h 15m | 1,012 | 5,331 |
| 4 | October 25, 2021 00:45 | October 27, 2021 23:15 | 2d 22h | 871 | 12K |
| 5 | July 11, 2021 02:00 | July 11, 2021 20:30 | 18h 30m | 672 | 2,245 |
| 6 | March 25, 2021 14:15 | March 25, 2021 16:45 | 2h 30m | 421 | 648 |
| 7 | September 11, 2021 07:30 | September 11, 2021 10:45 | 3h 15m | 347 | 90 |
| 8 | April 10, 2021 18:15 | April 11, 2021 01:15 | 7h | 240 | 1,023 |
| 9 | July 15, 2021 22:30 | July 16, 2021 18:00 | 19h 30m | 159 | 533 |
| 10 | June 25, 2021 19:00 | June 26, 2021 03:15 | 8h 15m | 158 | 565 |
Outage episodes by size in 2021: 20 reached 100+ customers, 3 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 Iron 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 |
| Black River Electric Coop - (MO) | 2021 | 9.1 hrs | - | 5.6 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 95% of Missouri's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 5,709 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. Iron County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Iron 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/iron-county