County annual report · FIPS 55139
2020 Winnebago County, WI Power Outage Report
In 2020, customers in Winnebago County, WI went without power for an average of 1.6 hours, a total of 119K customer-hours (Wisconsin average 1.8 hours). That ranks 38th worst of 72 Wisconsin counties and 2423rd 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 Winnebago 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 | May 26, 2020 17:00 | May 27, 2020 00:45 | 7h 45m | 7,682 | 13K |
| 2 | June 14, 2020 12:30 | June 14, 2020 20:15 | 7h 45m | 5,448 | 39K |
| 3 | June 2, 2020 22:15 | June 4, 2020 00:30 | 1d 2h | 5,417 | 18K |
| 4 | September 22, 2020 17:30 | September 22, 2020 20:45 | 3h 15m | 2,714 | 4,076 |
| 5 | August 23, 2020 09:15 | August 23, 2020 19:15 | 10h | 2,463 | 3,371 |
| 6 | August 8, 2020 14:00 | August 8, 2020 22:45 | 8h 45m | 1,812 | 1,641 |
| 7 | January 14, 2020 11:00 | January 14, 2020 14:45 | 3h 45m | 1,674 | 3,320 |
| 8 | November 10, 2020 15:15 | November 10, 2020 17:45 | 2h 30m | 1,666 | 2,691 |
| 9 | August 12, 2020 12:45 | August 12, 2020 14:30 | 1h 45m | 1,039 | 1,057 |
| 10 | April 29, 2020 02:45 | April 29, 2020 04:15 | 1h 30m | 950 | 476 |
Outage episodes by size in 2020: 47 reached 100+ customers, 9 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 Winnebago 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 |
|---|---|---|---|---|---|
| Wisconsin Electric Power Co | 2020 | 2.3 hrs | 0.87 | 1.6 hrs | 0.70 |
| Wisconsin Public Service Corp | 2020 | 1.7 hrs | 0.94 | 1.7 hrs | 0.94 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| City of Menasha - (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 ÷ 74,573 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. Winnebago County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Winnebago 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/winnebago-county