County annual report · FIPS 55121
2020 Trempealeau County, WI Power Outage Report
In 2020, customers in Trempealeau County, WI went without power for an average of 0.5 hours, a total of 7,708 customer-hours (Wisconsin average 1.8 hours). That ranks 66th worst of 72 Wisconsin counties and 2818th of 3,019 nationally.
Compared with WI, the US and 2019
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Trempealeau County, 2020
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 19, 2020 06:15 | July 19, 2020 07:45 | 1h 30m | 1,448 | 2,172 |
| 2 | April 20, 2020 14:00 | April 20, 2020 19:45 | 5h 45m | 731 | 855 |
| 3 | August 15, 2020 04:15 | August 15, 2020 06:15 | 2h | 506 | 1,012 |
| 4 | November 10, 2020 15:00 | November 10, 2020 22:30 | 7h 30m | 462 | 615 |
| 5 | April 20, 2020 22:45 | April 21, 2020 04:45 | 6h | 147 | 162 |
| 6 | March 6, 2020 01:00 | March 6, 2020 10:30 | 9h 30m | 109 | 810 |
| 7 | May 17, 2020 21:45 | May 17, 2020 22:30 | 45m | 106 | 80 |
| 8 | August 25, 2020 23:30 | August 26, 2020 07:15 | 7h 45m | 88 | 441 |
| 9 | June 15, 2020 01:15 | June 15, 2020 03:00 | 1h 45m | 87 | 152 |
| 10 | June 27, 2020 11:15 | June 27, 2020 14:00 | 2h 45m | 40 | 109 |
Outage episodes by size in 2020: 7 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 2020, 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 | 2020 | 3.9 hrs | 1.63 | 2.8 hrs | 1.52 |
| Riverland Energy Cooperative | 2020 | 88 min | 0.69 | 73 min | 0.59 |
| 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 2020; 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, 2020, 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/2020/wisconsin/trempealeau-county