County annual report · FIPS 55011
2025 Buffalo County, WI Power Outage Report
In 2025, customers in Buffalo County, WI went without power for an average of 4.8 hours, a total of 29K customer-hours (Wisconsin average 3.9 hours). That ranks 19th worst of 72 Wisconsin counties and 1547th 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 Buffalo 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 24, 2025 14:30 | August 5, 2025 19:00 | 12d 4h | 1,285 | 7,921 |
| 2 | June 24, 2025 11:30 | June 24, 2025 13:30 | 2h | 760 | 1,454 |
| 3 | December 28, 2025 20:45 | December 29, 2025 15:00 | 18h 15m | 721 | 3,253 |
| 4 | August 15, 2025 21:15 | August 16, 2025 15:00 | 17h 45m | 666 | 4,595 |
| 5 | May 20, 2025 22:45 | May 21, 2025 00:30 | 1h 45m | 638 | 914 |
| 6 | November 1, 2025 13:15 | November 1, 2025 23:45 | 10h 30m | 549 | 476 |
| 7 | May 16, 2025 15:15 | May 16, 2025 16:45 | 1h 30m | 328 | 492 |
| 8 | July 2, 2025 16:30 | July 2, 2025 16:45 | 15m | 289 | 72 |
| 9 | December 18, 2025 23:15 | December 18, 2025 23:30 | 15m | 246 | 62 |
| 10 | November 26, 2025 06:45 | November 26, 2025 11:30 | 4h 45m | 243 | 851 |
Outage episodes by size in 2025: 21 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 Buffalo 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 |
| Riverland Energy Cooperative | 2024 | 4.4 hrs | 1.76 | 2.4 hrs | 1.38 |
| Pierce-Pepin Coop Services | 2018 | 3.0 hrs | 1.10 | 2.9 hrs | 1.04 |
| Eau Claire 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 ÷ 5,936 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. Buffalo County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Buffalo 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/buffalo-county