County annual report · FIPS 55121
2017 Trempealeau County, WI Power Outage Report
In 2017, customers in Trempealeau County, WI went without power for an average of 0.8 hours, a total of 12K customer-hours (Wisconsin average 2.9 hours). That ranks 60th worst of 72 Wisconsin counties and 2120th of 2,786 nationally.
Compared with WI, the US and 2016
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Trempealeau County, 2017
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 28, 2017 23:15 | July 29, 2017 03:45 | 4h 30m | 1,397 | 6,185 |
| 2 | May 17, 2017 01:00 | May 17, 2017 04:15 | 3h 15m | 501 | 1,182 |
| 3 | July 19, 2017 22:45 | July 20, 2017 05:00 | 6h 15m | 496 | 664 |
| 4 | July 22, 2017 21:45 | July 22, 2017 23:30 | 1h 45m | 494 | 388 |
| 5 | November 21, 2017 12:45 | November 21, 2017 16:45 | 4h | 215 | 630 |
| 6 | July 20, 2017 07:30 | July 20, 2017 22:15 | 14h 45m | 153 | 664 |
| 7 | June 12, 2017 21:15 | June 13, 2017 11:30 | 14h 15m | 146 | 843 |
| 8 | June 7, 2017 12:45 | June 7, 2017 15:45 | 3h | 117 | 232 |
| 9 | May 17, 2017 22:45 | May 18, 2017 14:30 | 15h 45m | 108 | 339 |
| 10 | June 28, 2017 12:45 | June 28, 2017 16:30 | 3h 45m | 86 | 323 |
Outage episodes by size in 2017: 9 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 2017, 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 | 2017 | 4.6 hrs | 1.14 | 1.9 hrs | 0.73 |
| Riverland Energy Cooperative | 2017 | 2.3 hrs | 1.20 | 1.7 hrs | 1.00 |
| 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 2017; 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, 2017, 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/2017/wisconsin/trempealeau-county