County annual report · FIPS 55109
2018 St. Croix County, WI Power Outage Report
In 2018, customers in St. Croix County, WI went without power for an average of 1.6 hours, a total of 52K customer-hours (Wisconsin average 1.7 hours). That ranks 34th worst of 71 Wisconsin counties and 2022nd of 2,798 nationally.
Compared with WI, the US and 2017
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in St. Croix County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 26, 2018 12:00 | August 26, 2018 18:15 | 6h 15m | 2,399 | 665 |
| 2 | August 27, 2018 22:00 | August 29, 2018 02:15 | 1d 4h | 1,956 | 8,783 |
| 3 | March 27, 2018 15:15 | March 28, 2018 13:30 | 22h 15m | 1,673 | 4,304 |
| 4 | May 11, 2018 01:45 | May 11, 2018 06:45 | 5h | 842 | 2,292 |
| 5 | March 5, 2018 15:45 | March 6, 2018 01:00 | 9h 15m | 793 | 3,224 |
| 6 | March 6, 2018 03:15 | March 6, 2018 06:45 | 3h 30m | 717 | 2,356 |
| 7 | August 10, 2018 17:45 | August 10, 2018 19:30 | 1h 45m | 664 | 1,162 |
| 8 | January 8, 2018 16:45 | January 8, 2018 21:45 | 5h | 641 | 664 |
| 9 | June 16, 2018 13:00 | June 17, 2018 00:45 | 11h 45m | 638 | 4,015 |
| 10 | December 6, 2018 15:45 | December 6, 2018 21:30 | 5h 45m | 577 | 2,509 |
Outage episodes by size in 2018: 30 reached 100+ customers, 3 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 St. Croix County reported on EIA Form 861 for 2018, 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 |
| Dunn County Electric Coop | 2018 | 2.3 hrs | 1.34 | 60 min | 0.60 |
| Polk-Burnett Electric Coop | 2018 | 52 min | 0.77 | 37 min | 0.56 |
| Pierce-Pepin Coop Services | 2018 | 3.0 hrs | 1.10 | 2.9 hrs | 1.04 |
| St Croix Electric Coop | 2018 | 1.8 hrs | 0.69 | 1.7 hrs | 0.68 |
| City of River Falls | 2018 | 45 min | 0.41 | 18 min | 0.12 |
| City of New Richmond | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 83% of Wisconsin's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 31,550 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. St. Croix County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), St. Croix County, WI annual power outage report, 2018, 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/2018/wisconsin/st-croix-county