County annual report · FIPS 26071
2021 Iron County, MI Power Outage Report
In 2021, customers in Iron County, MI went without power for an average of 22.6 hours, a total of 133K customer-hours (Michigan average 26.6 hours). That ranks 40th worst of 83 Michigan counties and 381st of 2,974 nationally.
Compared with MI, the US and 2020
Coverage line is EAGLE-I's share of Michigan 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 | December 16, 2021 05:30 | December 19, 2021 22:30 | 3d 17h | 4,599 | 100K |
| 2 | June 11, 2021 11:30 | June 11, 2021 14:00 | 2h 30m | 1,925 | 2,288 |
| 3 | September 5, 2021 18:45 | September 5, 2021 19:15 | 30m | 1,334 | 667 |
| 4 | November 16, 2021 21:00 | November 17, 2021 00:30 | 3h 30m | 1,027 | 1,035 |
| 5 | August 29, 2021 02:15 | August 30, 2021 00:15 | 22h | 886 | 3,364 |
| 6 | March 2, 2021 15:30 | March 2, 2021 20:00 | 4h 30m | 794 | 1,824 |
| 7 | July 27, 2021 03:30 | July 30, 2021 02:45 | 2d 23h | 546 | 17K |
| 8 | June 8, 2021 21:30 | June 10, 2021 04:00 | 1d 6h | 544 | 1,420 |
| 9 | August 30, 2021 13:00 | August 30, 2021 13:15 | 15m | 486 | 122 |
| 10 | May 9, 2021 21:00 | May 9, 2021 21:15 | 15m | 358 | 90 |
Outage episodes by size in 2021: 17 reached 100+ customers, 4 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 |
|---|---|---|---|---|---|
| Upper Peninsula Power Company | 2021 | 4.6 hrs | 1.48 | 2.5 hrs | 1.16 |
| Upper Michigan Energy Resources Corp. | 2021 | 13.0 hrs | 2.15 | 4.0 hrs | 1.50 |
| City of Crystal Falls | - | - | - | - | - |
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 Michigan's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 5,890 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, MI 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/michigan/iron-county