County annual report · FIPS 55077
2021 Marquette County, WI Power Outage Report
In 2021, customers in Marquette County, WI went without power for an average of 4.5 hours, a total of 40K customer-hours (Wisconsin average 4.7 hours). That ranks 23rd worst of 72 Wisconsin counties and 1435th 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 Marquette 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 04:15 | December 17, 2021 06:00 | 1d 1h | 2,055 | 10K |
| 2 | May 15, 2021 10:45 | May 15, 2021 19:15 | 8h 30m | 1,010 | 8,527 |
| 3 | July 29, 2021 05:00 | July 29, 2021 23:45 | 18h 45m | 1,002 | 7,414 |
| 4 | June 10, 2021 06:45 | June 10, 2021 08:45 | 2h | 964 | 1,206 |
| 5 | January 23, 2021 07:15 | January 23, 2021 07:30 | 15m | 864 | 216 |
| 6 | July 31, 2021 01:00 | July 31, 2021 10:15 | 9h 15m | 861 | 5,375 |
| 7 | March 3, 2021 17:30 | March 3, 2021 22:45 | 5h 15m | 408 | 208 |
| 8 | July 27, 2021 13:45 | July 27, 2021 18:45 | 5h | 344 | 754 |
| 9 | May 27, 2021 17:00 | May 27, 2021 19:45 | 2h 45m | 341 | 236 |
| 10 | June 18, 2021 05:45 | June 18, 2021 19:45 | 14h | 270 | 1,204 |
Outage episodes by size in 2021: 16 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 Marquette 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 |
| Adams-Columbia Electric Coop | 2021 | 1.7 hrs | 0.74 | 1.7 hrs | 0.74 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Pioneer Power and Light Co | - | - | - | - | - |
| Westfield Electric Company | - | - | - | - | - |
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 ÷ 8,847 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. Marquette County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Marquette 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/marquette-county