County annual report · FIPS 55071
2021 Manitowoc County, WI Power Outage Report
In 2021, customers in Manitowoc County, WI went without power for an average of 0.7 hours, a total of 32K customer-hours (Wisconsin average 4.7 hours). That ranks 68th worst of 72 Wisconsin counties and 2768th 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 Manitowoc 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 | December 16, 2021 07:00 | December 17, 2021 08:30 | 1d 1h | 1,501 | 15K |
| 2 | June 15, 2021 19:30 | June 15, 2021 20:45 | 1h 15m | 1,195 | 1,427 |
| 3 | September 15, 2021 00:00 | September 15, 2021 02:00 | 2h | 921 | 1,063 |
| 4 | September 3, 2021 21:15 | September 3, 2021 22:45 | 1h 30m | 890 | 1,335 |
| 5 | March 28, 2021 14:30 | March 28, 2021 20:15 | 5h 45m | 668 | 864 |
| 6 | August 24, 2021 17:30 | August 25, 2021 01:15 | 7h 45m | 574 | 1,276 |
| 7 | February 5, 2021 03:30 | February 5, 2021 07:00 | 3h 30m | 397 | 1,387 |
| 8 | March 9, 2021 22:30 | March 9, 2021 22:45 | 15m | 266 | 67 |
| 9 | November 6, 2021 09:00 | November 6, 2021 17:15 | 8h 15m | 253 | 1,251 |
| 10 | June 13, 2021 21:30 | June 14, 2021 00:00 | 2h 30m | 242 | 484 |
Outage episodes by size in 2021: 19 reached 100+ customers, 2 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 Manitowoc 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 |
| Wisconsin Public Service Corp | 2021 | 9.3 hrs | 1.46 | 1.6 hrs | 0.83 |
| Manitowoc Public Utilities | 2021 | 46 min | 0.48 | 6 min | 0.10 |
| Two Rivers Water & Light | 2021 | 36 min | 0.55 | 0 min | 0.00 |
| Wisconsin Power & Light Co | - | - | - | - | - |
| City of Kiel - (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 ÷ 47,882 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. Manitowoc County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Manitowoc 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/manitowoc-county