County annual report · FIPS 55051
2021 Iron County, WI Power Outage Report
In 2021, customers in Iron County, WI went without power for an average of 18.3 hours, a total of 39K customer-hours (Wisconsin average 4.7 hours). That ranks 5th worst of 72 Wisconsin counties and 471st of 2,974 nationally.
Compared with WI, the US and 2020
Coverage line is EAGLE-I's share of Wisconsin 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 | March 22, 2021 12:00 | March 22, 2021 20:30 | 8h 30m | 2,395 | 3,507 |
| 2 | July 27, 2021 02:30 | July 28, 2021 22:30 | 1d 20h | 1,136 | 21K |
| 3 | September 16, 2021 23:15 | September 17, 2021 01:45 | 2h 30m | 861 | 1,607 |
| 4 | July 24, 2021 07:00 | July 24, 2021 09:15 | 2h 15m | 803 | 1,070 |
| 5 | December 16, 2021 05:00 | December 18, 2021 18:15 | 2d 13h | 795 | 9,267 |
| 6 | March 21, 2021 22:00 | March 21, 2021 23:45 | 1h 45m | 292 | 511 |
| 7 | March 2, 2021 17:30 | March 2, 2021 19:00 | 1h 30m | 193 | 290 |
| 8 | March 28, 2021 01:00 | March 28, 2021 02:45 | 1h 45m | 187 | 282 |
| 9 | August 10, 2021 18:00 | August 10, 2021 21:30 | 3h 30m | 163 | 181 |
| 10 | March 21, 2021 16:45 | March 21, 2021 19:00 | 2h 15m | 107 | 241 |
Outage episodes by size in 2021: 11 reached 100+ customers, 2 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 |
|---|---|---|---|---|---|
| Wisconsin Electric Power Co | 2021 | 7.0 hrs | 1.13 | 1.7 hrs | 0.73 |
| Northern States Power Co | 2021 | 6.7 hrs | 1.60 | 2.2 hrs | 1.10 |
| Wisconsin Public Service Corp | 2021 | 9.3 hrs | 1.46 | 1.6 hrs | 0.83 |
| Price Electric Coop Inc | 2013 | 4.5 hrs | 4.50 | 4.5 hrs | 4.50 |
| Bayfield Electric Coop, Inc | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 85% of Wisconsin's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,123 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, WI 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/wisconsin/iron-county