Power outages in Waukesha County, WI
We don't have a live outage feed for the utilities serving Waukesha County yet. Wisconsin Electric Power Co and Oconomowoc Utilities serve this county.
Right now
No live outage data for Waukesha County yet.
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This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.i
From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.i
This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.i
From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.Outage map
Outage history in Waukesha County
2014–2025 recordWaukesha County averaged 35.3 significant outages a year in 2023–2025, more than most Wisconsin counties.
In the 12 months to December 2025, there were 30. Half were over within 1.5 hours; the longest lasted 1.5 days, starting August 10, 2025.
The largest on record began August 11, 2021, with 36,584 customers out at once.
Outages are most common in July.
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At least 1% of the area's customers, and at least 100, without power at the same time. Outages less than 6 hours apart count as one.i
Half of significant outages here ended sooner than this, and half lasted longer.| Largest events (start) | Peak out | LastediHow long this area stayed at or above the significant-outage line, not how long any one home was without power. | Customer-hoursiCustomers out multiplied by hours out, added up over the event. 1,000 customers out for 3 hours is 3,000 customer-hours. |
|---|---|---|---|
| August 11, 2021 | 36,584 | 3.1 days | 863,652 |
| January 12, 2024 | 34,927 | 3.5 days | 1,232,968 |
| July 28, 2023 | 23,527 | 2.1 days | 454,511 |
| June 30, 2019 | 21,890 | 9.5 hours | 128,398 |
| June 27, 2019 | 19,874 | 30 hours | 274,504 |
Recorded outages from EAGLE-I, Oak Ridge National Laboratory (CC BY 4.0).i
From EAGLE-I, Oak Ridge National Laboratory's record of utility outage data every 15 minutes since 2014 (CC BY 4.0). It covered about 9 in 10 U.S. customers.
Cities in Waukesha County
Nearby counties
Utilities
- Wisconsin Electric Power Co no live feed
- Oconomowoc Utilities no live feed
- All Wisconsin outages