Jefferson County, WI Power Outages
Utilities serving Jefferson County, Wisconsin don't yet share live outage data with DOE's ODIN feed. Check your electric company's outage map (listed below) for real-time status.
Jefferson County on the Wisconsin outage map
- Normal
- Minor
- Moderate
- Major
- Severe
- Limited data
Current outages
Weather alerts
No active outage-relevant weather alerts from the National Weather Service.
Jefferson County power outage history
Every significant outage recorded in Jefferson County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 225 significant power outages in Jefferson County, meaning events that left at least 1% of customers in the dark. The largest (May 28–29, 2024) came when hail and lightning left 13,807 customers (40% of the county) without power.
From 2018 to 2025, the average customer here lost about 5 hr 35 min of power per year, more than the Wisconsin average of 3 hr 38 min. That ranks 20th of 72 Wisconsin counties for outage time, where 1st has the most.
July is the riskiest month: it accounted for 39% of all customer outage time from 2018 to 2025. On 64 days in that period, at least 5% of customers were out at the same time. Outage time in Jefferson County has risen recently: about 7 hr 38 min per customer per year in 2022–2025, versus 3 hr 33 min in 2018–2021.
The most recent significant outage on record (Dec 29, 2025) affected 488 customers (1.4%) amid a winter storm.
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | May 28–29, 2024 | 13,807(40%) | 2 | Hail and lightning |
| 2 | Jul 29–31, 2023 | 12,904(37.4%) | 3 | Severe thunderstorms |
| 3 | Jun 13–16, 2022 | 8,397(24.3%) | 4 | Severe thunderstorms |
| 4 | Jun 25, 2023 | 8,279(24%) | 1 | High winds |
| 5 | Mar 15, 2025 | 7,953(23%) | 1 | Severe thunderstorms |
Hours without power per customer, by year
When outages happen
Source: DOE/ORNL EAGLE-I recorded electricity outages, 2014–2025 (CC BY 4.0), with likely causes from the NOAA NCEI Storm Events Database. EAGLE-I coverage was partial before 2018, so averages use 2018–2025. Peak counts are the highest number of customers out at one time.
Who provides electricity in Jefferson County?
Electric companies with service territory in Jefferson County (EIA-861, 2025)
| Utility | Type | Customers (WI) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| We Energies | Investor Owned | 1,228,534 | Not reporting | |
| Alliant Energy (Wisconsin) | Investor Owned | 505,706 | Not reporting | |
| Adams-Columbia Electric Coop | Cooperative | 39,954 | Not reporting | |
| Lake Mills Light & Water | Municipal | 4,618 | Not reporting | |
| Jefferson Utilities | Municipal | 4,363 | Not reporting | |
| Waterloo Light & Water Comm | Municipal | 1,919 | Not reporting |
Customer counts are each utility's statewide total in Wisconsin. Source: U.S. Energy Information Administration, Form EIA-861 & Electric Power Annual.
Local outage news
No Jefferson County outage headlines in the past week.
Cities in Jefferson County
Watertown
Nearby counties
Jefferson County power outage FAQ
Is the power out in Jefferson County right now?
No outages are currently reported for Jefferson County by participating utilities. Live coverage is limited here, so If your power is out, report it to your electric company.
Which electric company serves Jefferson County?
According to EIA-861 service territory data, Wisconsin Electric Power Co, Wisconsin Power & Light Co, Adams-Columbia Electric Coop, Lake Mills Light & Water and 2 others provide electric service in Jefferson County, Wisconsin.
What was the worst power outage in Jefferson County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was May 28–29, 2024. It peaked at 13,807 customers without power (40% of the county). NOAA storm reports for that period point to hail and lightning.
How often does the power go out in Jefferson County?
EAGLE-I has recorded 225 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 5 hr 35 min of power per year, and on 64 days at least 5% of customers were out at once.
Cite this page
You may reuse our derived data under CC BY 4.0 with attribution. Underlying government data is public domain.
PowerOutageTracker.com. "Jefferson County, WI Power Outages." Accessed November 3, 2026. https://poweroutagetracker.com/outages/wisconsin/jefferson-county