County annual report · FIPS 55009
2025 Brown County, WI Power Outage Report
In 2025, customers in Brown County, WI went without power for an average of 1.5 hours, a total of 298K customer-hours (Wisconsin average 3.9 hours). That ranks 54th worst of 72 Wisconsin counties and 2616th of 3,000 nationally.
Compared with WI, the US and 2024
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Brown County, 2025
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 9, 2025 17:00 | August 10, 2025 19:15 | 1d 2h | 7,732 | 61K |
| 2 | April 1, 2025 13:30 | April 1, 2025 16:15 | 2h 45m | 6,247 | 8,428 |
| 3 | May 16, 2025 19:00 | May 19, 2025 03:30 | 2d 8h | 4,342 | 55K |
| 4 | November 3, 2025 17:30 | November 4, 2025 02:15 | 8h 45m | 4,046 | 4,211 |
| 5 | March 27, 2025 16:00 | March 28, 2025 00:15 | 8h 15m | 3,848 | 5,503 |
| 6 | February 3, 2025 09:30 | February 3, 2025 19:45 | 10h 15m | 3,338 | 9,681 |
| 7 | July 1, 2025 15:30 | July 1, 2025 19:30 | 4h | 3,299 | 3,342 |
| 8 | August 6, 2025 08:30 | August 6, 2025 15:30 | 7h | 3,144 | 7,099 |
| 9 | February 1, 2025 16:00 | February 1, 2025 17:15 | 1h 15m | 2,981 | 2,981 |
| 10 | July 23, 2025 21:15 | July 24, 2025 05:30 | 8h 15m | 2,770 | 5,870 |
Outage episodes by size in 2025: 94 reached 100+ customers, 22 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 2025, 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 | 2024 | 4.9 hrs | 1.04 | 1.8 hrs | 0.74 |
| Wisconsin Public Service Corp | 2024 | 7.8 hrs | 1.22 | 1.6 hrs | 0.77 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Wisconsin's customers in 2025; 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, 2025, 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/2025/wisconsin/brown-county