County annual report · FIPS 55037
2025 Florence County, WI Power Outage Report
In 2025, customers in Florence County, WI went without power for an average of 37.1 hours, a total of 105K customer-hours (Wisconsin average 3.9 hours). That ranks 5th worst of 72 Wisconsin counties and 133rd 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 Florence 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 | March 30, 2025 05:00 | April 4, 2025 05:15 | 5d | 1,764 | 94K |
| 2 | June 27, 2025 14:15 | June 27, 2025 17:15 | 3h | 731 | 2,013 |
| 3 | March 17, 2025 21:30 | March 17, 2025 23:00 | 1h 30m | 559 | 839 |
| 4 | March 29, 2025 09:30 | March 29, 2025 14:15 | 4h 45m | 559 | 2,376 |
| 5 | March 30, 2025 02:00 | March 30, 2025 04:00 | 2h | 558 | 1,116 |
| 6 | March 5, 2025 12:45 | March 6, 2025 17:15 | 1d 4h | 232 | 1,746 |
| 7 | March 14, 2025 13:45 | March 14, 2025 19:00 | 5h 15m | 207 | 656 |
| 8 | November 26, 2025 16:15 | November 27, 2025 17:30 | 1d 1h | 144 | 757 |
| 9 | May 29, 2025 19:15 | May 29, 2025 21:45 | 2h 30m | 132 | 330 |
| 10 | March 9, 2025 20:45 | March 9, 2025 23:45 | 3h | 123 | 354 |
Outage episodes by size in 2025: 10 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 Florence 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 |
| Florence Utility Comm | 2024 | 42 min | 0.28 | 42 min | 0.28 |
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 ÷ 2,842 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. Florence County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Florence 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/florence-county