County annual report · FIPS 55033
2025 Dunn County, WI Power Outage Report
In 2025, customers in Dunn County, WI went without power for an average of 5.2 hours, a total of 128K customer-hours (Wisconsin average 3.9 hours). That ranks 17th worst of 72 Wisconsin counties and 1455th 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 Dunn 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 | July 29, 2025 03:00 | July 30, 2025 15:15 | 1d 12h | 6,292 | 44K |
| 2 | July 4, 2025 04:00 | July 5, 2025 06:15 | 1d 2h | 3,365 | 48K |
| 3 | July 6, 2025 06:30 | July 6, 2025 08:15 | 1h 45m | 1,437 | 1,557 |
| 4 | April 25, 2025 05:45 | April 25, 2025 12:00 | 6h 15m | 1,114 | 4,418 |
| 5 | August 9, 2025 10:45 | August 9, 2025 22:45 | 12h | 980 | 4,195 |
| 6 | May 15, 2025 19:15 | May 16, 2025 20:15 | 1d 1h | 951 | 3,409 |
| 7 | January 21, 2025 10:45 | January 21, 2025 14:15 | 3h 30m | 885 | 1,773 |
| 8 | May 5, 2025 14:15 | May 5, 2025 14:30 | 15m | 531 | 133 |
| 9 | December 28, 2025 13:00 | December 28, 2025 16:00 | 3h | 438 | 892 |
| 10 | May 21, 2025 04:15 | May 21, 2025 13:00 | 8h 45m | 423 | 897 |
Outage episodes by size in 2025: 22 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 Dunn 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 |
|---|---|---|---|---|---|
| Northern States Power Co | 2024 | 3.1 hrs | 1.06 | 2.0 hrs | 0.81 |
| Barron Electric Coop | 2024 | 4.6 hrs | 1.98 | 2.4 hrs | 1.50 |
| Dunn County Electric Coop | 2024 | 1.8 hrs | 0.84 | 84 min | 0.69 |
| Polk-Burnett Electric Coop | 2024 | 1.6 hrs | 0.98 | 50 min | 0.69 |
| St Croix Electric Coop | 2018 | 1.8 hrs | 0.69 | 1.7 hrs | 0.68 |
| Eau Claire Electric Coop | - | - | - | - | - |
| Chippewa Valley Electric Coop | - | - | - | - | - |
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 ÷ 24,888 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. Dunn County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Dunn 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/dunn-county