County annual report · FIPS 55079
2018 Milwaukee County, WI Power Outage Report
In 2018, customers in Milwaukee County, WI went without power for an average of 1.3 hours, a total of 794K customer-hours (Wisconsin average 1.7 hours). That ranks 43rd worst of 71 Wisconsin counties and 2166th of 2,798 nationally.
Compared with WI, the US and 2017
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Milwaukee County, 2018
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 8, 2018 14:45 | May 9, 2018 06:00 | 15h 15m | 19,306 | 33K |
| 2 | June 18, 2018 09:45 | June 21, 2018 21:15 | 3d 11h | 16,452 | 91K |
| 3 | December 4, 2018 14:45 | December 4, 2018 18:15 | 3h 30m | 15,803 | 3,960 |
| 4 | June 30, 2018 08:45 | July 3, 2018 05:15 | 2d 20h | 15,254 | 118K |
| 5 | September 19, 2018 17:00 | September 19, 2018 21:00 | 4h | 10,254 | 2,611 |
| 6 | August 1, 2018 14:15 | August 3, 2018 01:00 | 1d 10h | 9,886 | 25K |
| 7 | October 30, 2018 13:45 | October 30, 2018 20:00 | 6h 15m | 8,777 | 2,203 |
| 8 | November 5, 2018 12:15 | November 6, 2018 04:00 | 15h 45m | 7,409 | 1,889 |
| 9 | April 30, 2018 16:15 | May 1, 2018 02:00 | 9h 45m | 6,428 | 2,492 |
| 10 | July 4, 2018 10:45 | July 5, 2018 21:45 | 1d 11h | 5,726 | 32K |
Outage episodes by size in 2018: 166 reached 100+ customers, 82 reached 1,000+ customers, 5 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 Milwaukee County reported on EIA Form 861 for 2018, 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 | 2018 | 2.0 hrs | 0.73 | 70 min | 0.59 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 83% of Wisconsin's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 594,641 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. Milwaukee County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Milwaukee County, WI annual power outage report, 2018, 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/2018/wisconsin/milwaukee-county