County annual report · FIPS 55093
2018 Pierce County, WI Power Outage Report
In 2018, customers in Pierce County, WI went without power for an average of 0.9 hours, a total of 15K customer-hours (Wisconsin average 1.7 hours). That ranks 53rd worst of 71 Wisconsin counties and 2360th 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 Pierce 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 10, 2018 12:15 | August 10, 2018 13:15 | 1h | 641 | 640 |
| 2 | June 17, 2018 21:30 | June 18, 2018 15:15 | 17h 45m | 638 | 5,697 |
| 3 | July 12, 2018 04:30 | July 12, 2018 04:45 | 15m | 638 | 160 |
| 4 | July 16, 2018 15:30 | July 16, 2018 23:30 | 8h | 606 | 1,095 |
| 5 | July 20, 2018 16:45 | July 20, 2018 17:15 | 30m | 313 | 157 |
| 6 | October 1, 2018 18:15 | October 1, 2018 19:45 | 1h 30m | 222 | 197 |
| 7 | August 27, 2018 23:15 | August 28, 2018 22:45 | 23h 30m | 197 | 1,471 |
| 8 | September 3, 2018 23:15 | September 4, 2018 08:45 | 9h 30m | 154 | 562 |
| 9 | September 21, 2018 00:45 | September 21, 2018 17:45 | 17h | 146 | 772 |
| 10 | July 12, 2018 23:45 | July 13, 2018 12:00 | 12h 15m | 130 | 418 |
Outage episodes by size in 2018: 10 reached 100+ customers, 0 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 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 |
| 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 |
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 ÷ 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, 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/pierce-county