County annual report · FIPS 55109
2021 St. Croix County, WI Power Outage Report
In 2021, customers in St. Croix County, WI went without power for an average of 7.0 hours, a total of 222K customer-hours (Wisconsin average 4.7 hours). That ranks 14th worst of 72 Wisconsin counties and 1033rd of 2,974 nationally.
Compared with WI, the US and 2020
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in St. Croix County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 17, 2021 08:45 | September 20, 2021 00:15 | 2d 15h | 13,380 | 154K |
| 2 | March 21, 2021 17:45 | March 22, 2021 04:45 | 11h | 4,725 | 14K |
| 3 | January 24, 2021 12:30 | January 24, 2021 15:15 | 2h 45m | 3,063 | 4,515 |
| 4 | July 9, 2021 10:00 | July 9, 2021 17:15 | 7h 15m | 2,618 | 6,546 |
| 5 | July 29, 2021 03:00 | July 29, 2021 16:15 | 13h 15m | 2,458 | 4,856 |
| 6 | February 5, 2021 16:00 | February 5, 2021 18:45 | 2h 45m | 2,454 | 2,458 |
| 7 | May 24, 2021 06:15 | May 24, 2021 16:00 | 9h 45m | 1,712 | 3,589 |
| 8 | April 24, 2021 06:00 | April 24, 2021 08:15 | 2h 15m | 1,535 | 777 |
| 9 | July 11, 2021 16:15 | July 11, 2021 17:30 | 1h 15m | 1,172 | 1,298 |
| 10 | October 1, 2021 22:30 | October 2, 2021 01:45 | 3h 15m | 1,116 | 1,878 |
Outage episodes by size in 2021: 30 reached 100+ customers, 12 reached 1,000+ customers, 1 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 2021, 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 | 2021 | 6.7 hrs | 1.60 | 2.2 hrs | 1.10 |
| Dunn County Electric Coop | 2021 | 2.1 hrs | 0.92 | 76 min | 0.63 |
| Polk-Burnett Electric Coop | 2021 | 54 min | 0.70 | 43 min | 0.63 |
| 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 | 2021 | 14 min | 0.08 | 14 min | 0.08 |
| City of New Richmond | 2021 | 56 min | 0.75 | 20 min | 0.45 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 85% of Wisconsin's customers in 2021; 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, 2021, 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/2021/wisconsin/st-croix-county