County annual report · FIPS 55121
2019 Trempealeau County, WI Power Outage Report
In 2019, customers in Trempealeau County, WI went without power for an average of 0.8 hours, a total of 12K customer-hours (Wisconsin average 4.4 hours). That ranks 65th worst of 71 Wisconsin counties and 2572nd of 2,945 nationally.
Compared with WI, the US and 2018
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Trempealeau County, 2019
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 20, 2019 14:15 | July 21, 2019 03:00 | 12h 45m | 984 | 3,908 |
| 2 | June 28, 2019 04:15 | June 28, 2019 12:30 | 8h 15m | 565 | 1,694 |
| 3 | April 9, 2019 03:00 | April 9, 2019 07:00 | 4h | 507 | 1,648 |
| 4 | January 2, 2019 19:15 | January 2, 2019 20:15 | 1h | 499 | 498 |
| 5 | September 14, 2019 19:45 | September 14, 2019 20:30 | 45m | 303 | 227 |
| 6 | September 25, 2019 02:15 | September 25, 2019 15:00 | 12h 45m | 219 | 1,824 |
| 7 | April 12, 2019 03:15 | April 12, 2019 05:00 | 1h 45m | 198 | 341 |
| 8 | July 29, 2019 02:00 | July 29, 2019 06:30 | 4h 30m | 65 | 277 |
| 9 | June 20, 2019 13:15 | June 20, 2019 19:00 | 5h 45m | 47 | 129 |
| 10 | October 18, 2019 14:45 | October 18, 2019 17:15 | 2h 30m | 45 | 113 |
Outage episodes by size in 2019: 7 reached 100+ customers, 0 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 2019, 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 | 2018 | 2.9 hrs | 0.94 | 1.8 hrs | 0.69 |
| Riverland Energy Cooperative | 2018 | 1.6 hrs | 0.74 | 1.6 hrs | 0.74 |
| 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 84% of Wisconsin's customers in 2019; 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, 2019, 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/2019/wisconsin/trempealeau-county