County annual report · FIPS 55117
2021 Sheboygan County, WI Power Outage Report
In 2021, customers in Sheboygan County, WI went without power for an average of 3.6 hours, a total of 93K customer-hours (Wisconsin average 4.7 hours). That ranks 28th worst of 72 Wisconsin counties and 1643rd of 2,974 nationally.
Compared with WI, the US and 2020
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Sheboygan County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 20, 2021 05:30 | February 20, 2021 07:00 | 1h 30m | 5,598 | 8,109 |
| 2 | August 27, 2021 17:15 | August 28, 2021 19:15 | 1d 2h | 3,574 | 4,394 |
| 3 | December 28, 2021 12:45 | December 29, 2021 01:15 | 12h 30m | 3,396 | 2,838 |
| 4 | July 20, 2021 17:15 | July 20, 2021 18:30 | 1h 15m | 3,362 | 842 |
| 5 | February 25, 2021 21:15 | February 25, 2021 22:30 | 1h 15m | 2,307 | 577 |
| 6 | August 11, 2021 01:00 | August 12, 2021 20:15 | 1d 19h | 1,615 | 6,641 |
| 7 | January 16, 2021 07:15 | January 16, 2021 09:30 | 2h 15m | 1,547 | 3,281 |
| 8 | December 16, 2021 01:30 | December 20, 2021 00:00 | 3d 22h | 1,521 | 26K |
| 9 | June 18, 2021 05:45 | June 19, 2021 01:00 | 19h 15m | 1,309 | 5,285 |
| 10 | December 2, 2021 14:00 | December 2, 2021 15:00 | 1h | 1,050 | 788 |
Outage episodes by size in 2021: 44 reached 100+ customers, 10 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 Sheboygan County reported on EIA Form 861 for 2021, 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 | 2021 | 7.0 hrs | 1.13 | 1.7 hrs | 0.73 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| City of Plymouth - (WI) | - | - | - | - | - |
| City of Sheboygan Falls - (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 85% of Wisconsin's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 25,546 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. Sheboygan County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sheboygan County, WI annual power outage report, 2021, 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/2021/wisconsin/sheboygan-county