County annual report · FIPS 55073
2020 Marathon County, WI Power Outage Report
In 2020, customers in Marathon County, WI went without power for an average of 1.8 hours, a total of 144K customer-hours (Wisconsin average 1.8 hours). That ranks 32nd worst of 72 Wisconsin counties and 2339th 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 Marathon 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 | June 19, 2020 22:30 | June 20, 2020 00:30 | 2h | 11,369 | 14K |
| 2 | July 18, 2020 10:45 | July 18, 2020 22:00 | 11h 15m | 7,689 | 28K |
| 3 | November 19, 2020 21:45 | November 19, 2020 23:30 | 1h 45m | 4,539 | 1,353 |
| 4 | October 20, 2020 19:30 | October 22, 2020 02:30 | 1d 7h | 2,709 | 17K |
| 5 | September 25, 2020 14:30 | September 25, 2020 16:00 | 1h 30m | 2,576 | 653 |
| 6 | September 3, 2020 15:00 | September 3, 2020 18:00 | 3h | 1,989 | 3,529 |
| 7 | August 22, 2020 07:45 | August 22, 2020 09:15 | 1h 30m | 1,844 | 2,766 |
| 8 | April 20, 2020 23:30 | April 21, 2020 11:15 | 11h 45m | 1,533 | 4,797 |
| 9 | February 22, 2020 02:00 | February 22, 2020 08:30 | 6h 30m | 1,452 | 4,424 |
| 10 | June 19, 2020 02:15 | June 19, 2020 09:15 | 7h | 1,387 | 4,932 |
Outage episodes by size in 2020: 64 reached 100+ customers, 19 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 Marathon 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 |
| Wisconsin Public Service Corp | 2020 | 1.7 hrs | 0.94 | 1.7 hrs | 0.94 |
| Central Wisconsin Elec Coop | 2018 | 2.5 hrs | 1.27 | - | - |
| Taylor Electric Coop - (WI) | 2018 | 80 min | - | 46 min | - |
| City of Marshfield - (WI) | 2020 | 38 min | 0.56 | 13 min | 0.22 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Clark Electric Coop - (WI) | - | - | - | - | - |
| Village of Stratford - (WI) | - | - | - | - | - |
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 ÷ 80,598 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. Marathon County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Marathon 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/marathon-county