County annual report · FIPS 55007
2025 Bayfield County, WI Power Outage Report
In 2025, customers in Bayfield County, WI went without power for an average of 4.7 hours, a total of 30K customer-hours (Wisconsin average 3.9 hours). That ranks 21st worst of 72 Wisconsin counties and 1584th 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 Bayfield 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 | September 2, 2025 13:30 | September 2, 2025 21:30 | 8h | 1,597 | 8,661 |
| 2 | May 7, 2025 21:30 | May 7, 2025 22:15 | 45m | 882 | 662 |
| 3 | December 29, 2025 02:15 | December 29, 2025 12:00 | 9h 45m | 868 | 2,119 |
| 4 | November 2, 2025 17:45 | November 3, 2025 01:15 | 7h 30m | 618 | 1,804 |
| 5 | November 26, 2025 05:45 | November 27, 2025 19:15 | 1d 13h | 566 | 5,508 |
| 6 | June 21, 2025 08:45 | June 22, 2025 14:45 | 1d 6h | 310 | 2,608 |
| 7 | May 16, 2025 13:00 | May 16, 2025 16:45 | 3h 45m | 299 | 630 |
| 8 | January 21, 2025 13:30 | January 21, 2025 16:15 | 2h 45m | 293 | 508 |
| 9 | June 23, 2025 17:15 | June 23, 2025 20:00 | 2h 45m | 217 | 546 |
| 10 | June 27, 2025 07:15 | June 27, 2025 10:15 | 3h | 175 | 525 |
Outage episodes by size in 2025: 15 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 Bayfield 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 |
| Bayfield Electric Coop, Inc | - | - | - | - | - |
| Dahlberg Light & Power Co | - | - | - | - | - |
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 ÷ 6,473 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. Bayfield County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Bayfield 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/bayfield-county