County annual report · FIPS 55065
2021 Lafayette County, WI Power Outage Report
In 2021, customers in Lafayette County, WI went without power for an average of 2.3 hours, a total of 9,558 customer-hours (Wisconsin average 4.7 hours). That ranks 39th worst of 72 Wisconsin counties and 2095th 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 Lafayette 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 | April 26, 2021 05:45 | April 26, 2021 07:00 | 1h 15m | 1,325 | 1,656 |
| 2 | August 18, 2021 20:00 | August 18, 2021 21:00 | 1h | 807 | 236 |
| 3 | December 16, 2021 03:45 | December 16, 2021 23:30 | 19h 45m | 390 | 3,751 |
| 4 | December 11, 2021 03:15 | December 11, 2021 04:15 | 1h | 355 | 355 |
| 5 | April 3, 2021 19:15 | April 3, 2021 20:00 | 45m | 321 | 241 |
| 6 | October 21, 2021 13:15 | October 21, 2021 14:30 | 1h 15m | 183 | 229 |
| 7 | January 22, 2021 08:00 | January 22, 2021 09:30 | 1h 30m | 118 | 158 |
| 8 | December 9, 2021 07:45 | December 9, 2021 12:15 | 4h 30m | 67 | 302 |
| 9 | January 9, 2021 12:15 | January 9, 2021 13:15 | 1h | 66 | 66 |
| 10 | November 21, 2021 19:00 | November 21, 2021 21:45 | 2h 45m | 66 | 182 |
Outage episodes by size in 2021: 7 reached 100+ customers, 1 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 Lafayette 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 |
|---|---|---|---|---|---|
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Scenic Rivers Energy Coop | - | - | - | - | - |
| City of Cuba City | - | - | - | - | - |
| Village of Hazel Green - (WI) | - | - | - | - | - |
| City of Argyle - (WI) | - | - | - | - | - |
| City of Shullsburg - (WI) | - | - | - | - | - |
| Village of Belmont - (WI) | - | - | - | - | - |
| Village of Benton - (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 ÷ 4,085 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. Lafayette County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Lafayette 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/). https://massoutage.com/reports/2021/wisconsin/lafayette-county