County annual report · FIPS 55079
2015 Milwaukee County, WI Power Outage Report
In 2015, customers in Milwaukee County, WI went without power for an average of 0.9 hours, a total of 532K customer-hours (Wisconsin average 1.5 hours). That ranks 47th worst of 71 Wisconsin counties and 1832nd of 2,484 nationally.
Compared with WI, the US
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Milwaukee County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 22, 2015 12:15 | June 24, 2015 03:45 | 1d 15h | 14,059 | 61K |
| 2 | August 12, 2015 17:15 | August 12, 2015 20:15 | 3h | 13,550 | 3,401 |
| 3 | August 14, 2015 20:15 | August 16, 2015 06:15 | 1d 10h | 12,395 | 63K |
| 4 | December 19, 2015 16:00 | December 20, 2015 02:30 | 10h 30m | 12,303 | 3,138 |
| 5 | July 13, 2015 08:30 | July 15, 2015 03:15 | 1d 18h | 7,103 | 67K |
| 6 | December 10, 2015 13:45 | December 11, 2015 07:15 | 17h 30m | 6,329 | 15K |
| 7 | October 16, 2015 20:45 | October 17, 2015 05:30 | 8h 45m | 6,152 | 12K |
| 8 | January 16, 2015 04:15 | January 16, 2015 08:30 | 4h 15m | 5,254 | 13K |
| 9 | September 17, 2015 16:45 | September 19, 2015 05:00 | 1d 12h | 5,070 | 19K |
| 10 | August 2, 2015 17:30 | August 4, 2015 06:00 | 1d 12h | 4,946 | 29K |
Outage episodes by size in 2015: 109 reached 100+ customers, 49 reached 1,000+ customers, 4 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 2015, 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 | 2015 | 2.1 hrs | 1.63 | 1.8 hrs | 1.38 |
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 2015; 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, 2015, 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/2015/wisconsin/milwaukee-county