County annual report · FIPS 55009
2021 Brown County, WI Power Outage Report
In 2021, customers in Brown County, WI went without power for an average of 1.5 hours, a total of 310K customer-hours (Wisconsin average 4.7 hours). That ranks 56th worst of 72 Wisconsin counties and 2455th 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 Brown 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 | August 10, 2021 20:15 | August 12, 2021 07:00 | 1d 10h | 8,796 | 68K |
| 2 | October 28, 2021 21:30 | October 29, 2021 01:30 | 4h | 8,234 | 19K |
| 3 | December 16, 2021 06:00 | December 18, 2021 01:00 | 1d 19h | 7,153 | 52K |
| 4 | June 14, 2021 01:00 | June 14, 2021 19:45 | 18h 45m | 6,921 | 40K |
| 5 | May 28, 2021 12:00 | May 28, 2021 17:00 | 5h | 4,294 | 1,548 |
| 6 | April 11, 2021 00:30 | April 11, 2021 03:15 | 2h 45m | 3,957 | 3,959 |
| 7 | February 4, 2021 23:30 | February 5, 2021 08:45 | 9h 15m | 3,367 | 12K |
| 8 | January 8, 2021 07:00 | January 8, 2021 23:30 | 16h 30m | 3,232 | 10K |
| 9 | July 27, 2021 14:00 | July 28, 2021 22:45 | 1d 8h | 2,217 | 7,232 |
| 10 | June 24, 2021 13:15 | June 24, 2021 22:30 | 9h 15m | 1,935 | 5,308 |
Outage episodes by size in 2021: 83 reached 100+ customers, 21 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 Brown 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 |
| Wisconsin Public Service Corp | 2021 | 9.3 hrs | 1.46 | 1.6 hrs | 0.83 |
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 ÷ 201,743 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. Brown County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Brown 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/brown-county