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Power Outages in Waukesha County, WI

Wisconsin Electric Power Co publishes only a system-wide total, not county figures. There is no live feed for Oconomowoc Utilities. In 2025, the average customer here lost power for about 4.2 hours.

Waukesha County, WI is served by 2 tracked utilities.

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https://massoutage.com/wisconsin/waukesha-county
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Not available
Publisher
MassOutage

MassOutage, "Power Outages in Waukesha County, WI". https://massoutage.com/wisconsin/waukesha-county

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Waukesha County, WI
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This county Loading live outagesout
No outages reported (partial view)

Wisconsin Electric Power Co publishes no county-level figures.

No live feed for Oconomowoc Utilities: outages in itsservice area won't show here.

Live status by utility · Waukesha County

0.0%of this county's ~143,884 customers are served by utilities with a county-level live feed.

Blind spots

We can't see outages for: Oconomowoc Utilities. Their customers are not in any number on this page; check their own outage maps.

System-wide total only, no county split: Wisconsin Electric Power Co.

UtilityFeedOutServed% outSmall outagesIncidentsUtility ETRAs of
Wisconsin Electric Power CoLive · total onlynot by county------
Oconomowoc UtilitiesNo live feedcan't see------

Electricity-dependent residents

HHS emPOWER · data October 7, 2026

Medicare beneficiaries in Waukesha Countywho rely on electricity-dependent medical equipment (ventilators, oxygen concentrators, home dialysis, powered wheelchairs, and more). HHS reports counts of 1–10 as “≤11”. Medicare only, so the full at-risk population is larger.

Power-dependent
3,197
Oxygen service
751
Dialysis (facility)
349
Home health / hospice
589
By ZIP code (26)
ZIPPower-dependentVentilatorsO2 concentratorsHome dialysis
53051306≤11223≤11
53005283≤11161≤11
53151249≤11185≤11
53188245≤11158≤11
53066237≤11171≤11
53186201≤11138≤11
5307219101400
53150181≤11128≤11
53189173≤11118≤11
53149145≤11104≤11
53045138≤1184≤11
53089132≤1198≤11
53029101≤1169≤11
5311865≤1144≤11
53018440300
5314638024≤11
5311937≤1127≤11
5310332≤1125≤11
5312231022≤11
53058210180
5315318≤11150
53046160≤110
53183≤11≤11≤11≤11
53069≤110≤110
53056≤110≤110
53007≤11≤11≤110

Emergency managers can request identified beneficiary lists through their state health department via the HHS emPOWER program.

🔔 Alerts for Waukesha County, WI

Outage began, grew, restoration estimate changed, restored: by email, Slack, Teams, Discord or signed webhook, for Waukesha County or any town and utility in it.

Get alerts for Waukesha CountySend updates to your dashboardRSS feed
◢ ACTIVE WEATHER ALERTS · NWS

No active NWS alerts for Waukesha County right now.

Recent NWS alert activity · Waukesha County

Waukesha County has been under 12 National Weather Service alerts recently, most recently a Freeze Warning on October 17, 2026.

  • Flood Watch ×6
  • Freeze Warning ×3
  • Flood Advisory ×1
  • Freeze Watch ×1
  • Special Weather Statement ×1

Latest Waukesha County, WI outage updates

A running log of how this outage has changed, updated automatically as utilities report in.

  1. RESOLVED

    Power restored after 4h 34m

  2. IMPROVING

    Improving: down to 619 customers out

  3. OUTAGE BEGAN

    Outage began: 4,566 customers out (2.2% of the county)

  4. RESOLVED

    Power restored after 1h 44m

  5. OUTAGE BEGAN

    Outage began: 762 customers out (0.4% of the county)

  6. RESOLVED

    Power restored after 1h 20m

  7. OUTAGE BEGAN

    Outage began: 1,563 customers out (0.8% of the county)

  8. RESOLVED

    Power restored after 9m

Outage trend · Waukesha County, WI
0customers out · peak 4,566
Data as of Oct 15, 2026 00:30 UTC
Waukesha County, WI: customers without power, last 24 hoursPeak 4,566 customers out; latest 0 as of Oct 15, 2026 00:30 UTC. Each point is the highest reading in its interval.02k4k6kOct 146 AM12 PM6 PM
Use the arrow keys to read values.
Times in EDT. Shaded stretches had no reading.

Hardest-hit cities in Waukesha County

Where this event is concentrated across the county's towns and townships.

  • Waukeshano outage reported
  • Brookfieldno outage reported
  • New Berlinno outage reported

Historical reliability

In 2025, the average customer in Waukesha County went about 4.2 hours without power. Peak simultaneous outage on record reached 45,425 customers.

Official state benchmark (EIA 2025)Source: US EIA

The US EIA reports Wisconsin utilities averaged 4.4 hrs without power per customer (SAIDI) in 2025, a cross-check on our county estimate of 4.2 hrs.

A decade of outages (2015–2025)
avg hrs without power / customer
Waukesha County average outage hours per customer by year2015–2025: 2015 2.1h, 2016 2.4h, 2017 2.0h, 2018 2.3h, 2019 6.1h, 2020 3.6h, 2021 12.9h, 2022 6.4h, 2023 7.6h, 2024 12.9h, 2025 4.2h. Highlighted: 2021.0510152.1h20152.4h20162.0h20172.3h20186.1h20193.6h202012.9h20216.4h20227.6h202312.9h20244.2h2025
Use the arrow keys to read values.

Worst year here was 2021 (peak 45,425 customers out) · decade average 5.7 hrs without power per customer/yr.

YearOutage eventsPeak customers outAvg hrs/customer
20154416,6122.1
20167967,6552.4
20177656,2812.0
20186985,5042.3
201974021,8906.1
202077811,0043.6
202174545,42512.9
202278715,2436.4
202384223,5277.6
202485934,92712.9
202586214,1534.2

Cost of power in Waukesha County

ENERGY & AI DEMAND →

Estimated residential electricity price for Waukesha County, customer-weighted across the utilities serving it (US EIA, 2025). Retail prices aren't published at the county level; this is a derived estimate.

20.5¢/kWh
estimated residential average
▲ 32% since 2015
vs Wisconsin avg 19.1¢
vs US avg 20.0¢
BY UTILITY · RESIDENTIAL ¢/kWh

Weighted by each utility's residential customer count (utilities report customers at the state level; a per-county share isn't published). Rising retail prices track a national demand surge; see energy & the data-center boom.

Worst recorded outages
STARTEDPEAK OUTDURATION
August 11, 202145,42512h 45m
January 12, 202434,9274d 16h
August 11, 202129,8511h 15m
August 11, 202129,2565d 8h
August 11, 202125,9871h 45m
See the biggest power outages in US history →
Natural hazards & outage risk
ELEVATED

Relatively High tornadoes exposure · 5.7 hrs/yr of outages over the last decade.

TornadoRelatively High
Ice stormRelatively Moderate
Strong windRelatively Moderate
FloodingRelatively Moderate
Heat waveRelatively Moderate
All hazard rankings →

Power outages in Waukesha County: FAQ

How often does Waukesha County, WI lose power?
Based on EAGLE-I records, Waukesha County, WI logged 862 distinct outage events in 2025, averaging about 4.2 hours without power per customer over the year.
What was the worst power outage in Waukesha County, WI?
The largest tracked outage peaked at 45,425 customers without power, beginning August 11, 2021 and lasting about 12h 45m.
Is there a power outage in Waukesha County, WI right now?
No major outage is currently reported for Waukesha County, WI. Live coverage depends on whether local utilities report to ODIN.
Which utilities serve Waukesha County, WI?
Tracked electric providers include Wisconsin Electric Power Co.
Nearby counties
Dodge CountyJefferson CountyMilwaukee CountyOzaukee County
Cities & towns in Waukesha County

Waukesha, Brookfield, New Berlin. Outage counts for these communities are reported at the Waukesha County level shown above.

ZIP codes in Waukesha County

Outages are tracked at the county level; these ZIP codes fall within Waukesha County.

53005, 53007, 53018, 53029, 53045, 53046, 53051, 53058, 53066, 53069, 53072, 53089, 53103, 53118, 53119, 53122, 53127, 53146, 53149, 53150, 53151, 53153, 53183, 53186, 53188, 53189

Electric providers serving this county

From EIA-861 service territory, with official reliability where reported.

ProviderOfficial SAIDI (EIA)LiveReport outage
Wisconsin Electric Power Co3.1 hrsLive · total only-
Oconomowoc Utilities-No live feed-

Data from DOE/ORNL ODIN, DOE EAGLE-I, EIA Form 861 (utility reliability), EIA electricity retail prices and FEMA National Risk Index, every source we read. Historical figures derive from the DOE/ORNL EAGLE-I dataset (EAGLE-I tracked roughly 0% of Wisconsin customers). Machine-readable data: /api/v1/counties/55133 and /api/v1/counties/55133/history.