County annual report · FIPS 55093
2020 Pierce County, WI Power Outage Report
In 2020, customers in Pierce County, WI went without power for an average of 0.7 hours, a total of 11K customer-hours (Wisconsin average 1.8 hours). That ranks 63rd worst of 72 Wisconsin counties and 2778th 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 Pierce 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 | March 27, 2020 16:00 | March 27, 2020 19:45 | 3h 45m | 4,070 | 1,995 |
| 2 | July 15, 2020 16:30 | July 15, 2020 17:00 | 30m | 638 | 319 |
| 3 | August 8, 2020 23:00 | August 9, 2020 13:00 | 14h | 208 | 1,089 |
| 4 | May 21, 2020 14:45 | May 21, 2020 19:15 | 4h 30m | 174 | 698 |
| 5 | July 18, 2020 09:00 | July 18, 2020 14:00 | 5h | 125 | 302 |
| 6 | January 5, 2020 02:00 | January 5, 2020 15:00 | 13h | 94 | 1,044 |
| 7 | August 31, 2020 02:00 | August 31, 2020 20:15 | 18h 15m | 91 | 550 |
| 8 | April 12, 2020 23:00 | April 13, 2020 11:45 | 12h 45m | 88 | 563 |
| 9 | February 4, 2020 16:00 | February 4, 2020 18:00 | 2h | 80 | 160 |
| 10 | September 3, 2020 15:45 | September 3, 2020 21:15 | 5h 30m | 80 | 291 |
Outage episodes by size in 2020: 5 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 Pierce 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 |
| Dunn County Electric Coop | 2020 | 68 min | 0.66 | 57 min | 0.60 |
| 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 | 2020 | 21 min | 0.30 | 21 min | 0.30 |
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 ÷ 16,786 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. Pierce County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Pierce 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/pierce-county