County annual report · FIPS 55093
2015 Pierce County, WI Power Outage Report
In 2015, customers in Pierce County, WI went without power for an average of 1.7 hours, a total of 29K customer-hours (Wisconsin average 1.5 hours). That ranks 32nd worst of 71 Wisconsin counties and 1353rd of 2,484 nationally.
Compared with WI, the US
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Pierce County, 2015
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 18, 2015 06:30 | July 19, 2015 01:45 | 19h 15m | 1,563 | 6,376 |
| 2 | November 19, 2015 21:45 | November 20, 2015 04:45 | 7h | 599 | 1,983 |
| 3 | September 24, 2015 20:00 | September 25, 2015 01:00 | 5h | 462 | 612 |
| 4 | September 17, 2015 12:00 | September 17, 2015 16:00 | 4h | 105 | 135 |
| 5 | August 23, 2015 04:00 | August 23, 2015 13:45 | 9h 45m | 85 | 247 |
| 6 | September 2, 2015 14:00 | September 2, 2015 17:00 | 3h | 72 | 112 |
| 7 | August 24, 2015 19:15 | August 24, 2015 21:00 | 1h 45m | 60 | 84 |
| 8 | July 13, 2015 09:15 | July 13, 2015 13:45 | 4h 30m | 52 | 156 |
| 9 | July 6, 2015 08:45 | July 6, 2015 10:30 | 1h 45m | 44 | 15 |
| 10 | November 12, 2015 11:45 | November 12, 2015 17:45 | 6h | 41 | 157 |
Outage episodes by size in 2015: 4 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 2015, 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 | 2015 | 2.4 hrs | 0.90 | 2.0 hrs | 0.82 |
| Dunn County Electric Coop | 2015 | 3.1 hrs | 1.31 | 3.1 hrs | 1.31 |
| St Croix Electric Coop | 2015 | 1.6 hrs | 0.65 | 54 min | 0.40 |
| City of River Falls | 2015 | 20 min | 0.15 | - | - |
| Pierce-Pepin Coop Services | - | - | - | - | - |
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 2015; 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, 2015, 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/2015/wisconsin/pierce-county