County annual report · FIPS 55089
2023 Ozaukee County, WI Power Outage Report
In 2023, customers in Ozaukee County, WI went without power for an average of 4.3 hours, a total of 147K customer-hours (Wisconsin average 3.4 hours). That ranks 17th worst of 72 Wisconsin counties and 1617th of 2,977 nationally.
Compared with WI, the US and 2022
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Ozaukee County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 10, 2023 05:15 | March 12, 2023 00:45 | 1d 19h | 9,699 | 71K |
| 2 | June 25, 2023 07:00 | June 26, 2023 09:15 | 1d 2h | 3,701 | 20K |
| 3 | November 3, 2023 19:30 | November 3, 2023 21:45 | 2h 15m | 3,606 | 4,842 |
| 4 | November 9, 2023 16:30 | November 9, 2023 22:15 | 5h 45m | 3,208 | 2,234 |
| 5 | September 30, 2023 03:45 | September 30, 2023 08:00 | 4h 15m | 972 | 4,131 |
| 6 | February 27, 2023 19:00 | February 27, 2023 21:15 | 2h 15m | 950 | 955 |
| 7 | February 13, 2023 18:30 | February 13, 2023 22:30 | 4h | 948 | 2,358 |
| 8 | July 29, 2023 04:30 | July 30, 2023 19:00 | 1d 14h | 913 | 9,605 |
| 9 | August 23, 2023 21:00 | August 24, 2023 03:00 | 6h | 885 | 1,344 |
| 10 | August 25, 2023 21:15 | August 26, 2023 02:45 | 5h 30m | 876 | 3,723 |
Outage episodes by size in 2023: 33 reached 100+ customers, 4 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 Ozaukee County reported on EIA Form 861 for 2023, 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 | 2023 | 4.5 hrs | 1.04 | 85 min | 0.68 |
| Cedarburg Light & Water Comm | - | - | - | - | - |
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 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 34,422 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. Ozaukee County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Ozaukee County, WI annual power outage report, 2023, 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/2023/wisconsin/ozaukee-county