County annual report · FIPS 55011
2021 Buffalo County, WI Power Outage Report
In 2021, customers in Buffalo County, WI went without power for an average of 4.3 hours, a total of 25K customer-hours (Wisconsin average 4.7 hours). That ranks 24th worst of 72 Wisconsin counties and 1477th of 2,974 nationally.
Compared with WI, the US and 2020
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Buffalo County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 18, 2021 02:00 | June 18, 2021 05:45 | 3h 45m | 1,520 | 2,296 |
| 2 | December 16, 2021 02:30 | December 18, 2021 01:30 | 1d 23h | 1,097 | 12K |
| 3 | July 6, 2021 19:00 | July 7, 2021 03:15 | 8h 15m | 833 | 1,225 |
| 4 | August 7, 2021 18:00 | August 7, 2021 22:30 | 4h 30m | 772 | 1,168 |
| 5 | August 19, 2021 00:45 | August 19, 2021 02:45 | 2h | 479 | 754 |
| 6 | July 29, 2021 04:00 | July 29, 2021 19:15 | 15h 15m | 427 | 2,621 |
| 7 | July 19, 2021 06:15 | July 19, 2021 12:00 | 5h 45m | 213 | 1,066 |
| 8 | June 29, 2021 03:30 | June 29, 2021 08:00 | 4h 30m | 164 | 433 |
| 9 | July 20, 2021 14:15 | July 20, 2021 17:45 | 3h 30m | 94 | 50 |
| 10 | August 31, 2021 23:00 | September 1, 2021 00:45 | 1h 45m | 73 | 112 |
Outage episodes by size in 2021: 8 reached 100+ customers, 2 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 2021, 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 | 2021 | 6.7 hrs | 1.60 | 2.2 hrs | 1.10 |
| Riverland Energy Cooperative | 2021 | 5.7 hrs | 1.31 | 72 min | 0.77 |
| 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 85% of Wisconsin's customers in 2021; 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, 2021, 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/2021/wisconsin/buffalo-county