County annual report · FIPS 55121
2023 Trempealeau County, WI Power Outage Report
In 2023, customers in Trempealeau County, WI went without power for an average of 2.0 hours, a total of 30K customer-hours (Wisconsin average 3.4 hours). That ranks 35th worst of 72 Wisconsin counties and 2288th of 2,977 nationally.
Compared with WI, the US and 2022
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Trempealeau County, 2023
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, 2023 00:15 | July 29, 2023 18:45 | 18h 30m | 1,460 | 6,339 |
| 2 | April 16, 2023 20:30 | April 18, 2023 20:30 | 2d | 836 | 11K |
| 3 | February 1, 2023 20:45 | February 1, 2023 23:00 | 2h 15m | 696 | 926 |
| 4 | July 26, 2023 08:45 | July 26, 2023 18:15 | 9h 30m | 358 | 1,108 |
| 5 | May 2, 2023 15:30 | May 3, 2023 01:00 | 9h 30m | 330 | 1,665 |
| 6 | October 4, 2023 07:30 | October 4, 2023 09:15 | 1h 45m | 290 | 508 |
| 7 | July 28, 2023 04:15 | July 28, 2023 06:45 | 2h 30m | 222 | 510 |
| 8 | September 30, 2023 12:15 | September 30, 2023 17:30 | 5h 15m | 210 | 167 |
| 9 | October 24, 2023 08:45 | October 24, 2023 13:15 | 4h 30m | 165 | 313 |
| 10 | April 6, 2023 04:45 | April 6, 2023 09:30 | 4h 45m | 115 | 305 |
Outage episodes by size in 2023: 14 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 Trempealeau County reported on EIA Form 861 for 2023, 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 | 2023 | 3.5 hrs | 1.26 | 2.1 hrs | 1.09 |
| Riverland Energy Cooperative | 2023 | 3.0 hrs | 1.00 | 82 min | 0.77 |
| Eau Claire Electric Coop | - | - | - | - | - |
| Jackson Electric Coop, Inc - (WI) | - | - | - | - | - |
| City of Arcadia - (WI) | - | - | - | - | - |
| Village of Trempealeau - (WI) | - | - | - | - | - |
| Whitehall Electric Utility | - | - | - | - | - |
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 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 14,810 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. Trempealeau County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Trempealeau County, WI annual power outage report, 2023, 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/2023/wisconsin/trempealeau-county