County annual report · FIPS 55081
2021 Monroe County, WI Power Outage Report
In 2021, customers in Monroe County, WI went without power for an average of 1.6 hours, a total of 28K customer-hours (Wisconsin average 4.7 hours). That ranks 54th worst of 72 Wisconsin counties and 2431st 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 Monroe 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 03:30 | December 17, 2021 11:15 | 1d 7h | 2,667 | 9,718 |
| 2 | July 29, 2021 04:30 | July 29, 2021 20:45 | 16h 15m | 1,620 | 4,196 |
| 3 | April 22, 2021 10:15 | April 22, 2021 11:30 | 1h 15m | 1,470 | 1,413 |
| 4 | October 30, 2021 02:15 | October 30, 2021 03:45 | 1h 30m | 1,351 | 1,622 |
| 5 | November 17, 2021 19:00 | November 17, 2021 20:15 | 1h 15m | 597 | 710 |
| 6 | June 26, 2021 23:30 | June 27, 2021 03:45 | 4h 15m | 592 | 1,625 |
| 7 | December 14, 2021 01:30 | December 14, 2021 02:00 | 30m | 563 | 248 |
| 8 | July 27, 2021 13:30 | July 27, 2021 20:15 | 6h 45m | 549 | 997 |
| 9 | June 18, 2021 03:45 | June 18, 2021 15:45 | 12h | 408 | 540 |
| 10 | July 23, 2021 18:15 | July 23, 2021 19:45 | 1h 30m | 394 | 215 |
Outage episodes by size in 2021: 20 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 Monroe 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 |
|---|---|---|---|---|---|
| Northern States Power Co | 2021 | 6.7 hrs | 1.60 | 2.2 hrs | 1.10 |
| Vernon Electric Coop | 2018 | 3.8 hrs | - | 2.4 hrs | - |
| Oakdale Electric Coop | 2021 | 1.8 hrs | 0.93 | 63 min | 0.72 |
| Village of Bangor - (WI) | 2017 | 10 min | 0.09 | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Jackson Electric Coop, Inc - (WI) | - | - | - | - | - |
| Village of Cashton - (WI) | - | - | - | - | - |
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 ÷ 18,029 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. Monroe County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Monroe 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/monroe-county