Power Outages in Jefferson County, WI
As of October 19, 2026 03:05 UTC, no outages are reported by Wisconsin Power & Light Co, Adams-Columbia Electric Coop and Wisconsin Electric Power Co in Jefferson County, WI. There is no live feed for Jefferson Utilities, Lake Mills Light & Water and Waterloo Light & Water Comm. In 2025, the average customer here lost power for about 5.4 hours.
Jefferson County, WI is served by 6 tracked utilities.
Cite this data
- URL
- https://massoutage.com/wisconsin/jefferson-county
- As of
- October 19, 2026 03:05 UTC
- Publisher
- MassOutage
MassOutage, "Power Outages in Jefferson County, WI", live data as of October 19, 2026 03:05 UTC. https://massoutage.com/wisconsin/jefferson-county
No active outages are reported by Wisconsin Power & Light Co, Adams-Columbia Electric Coop and Wisconsin Electric Power Co in Jefferson County.
No live feed for Jefferson Utilities, Lake Mills Light & Water and Waterloo Light & Water Comm: outages in theirservice area won't show here.
6.2%of this county's ~35,295 customers are served by utilities with a county-level live feed.
We can't see outages for: Jefferson Utilities, Lake Mills Light & Water, Waterloo Light & Water Comm. Their customers are not in any number on this page; check their own outage maps.
| Utility | Feed | Out | Served | % out | Small outages | Incidents | Utility ETR | As of |
|---|---|---|---|---|---|---|---|---|
| Wisconsin Power & Light Co | Live · county | 0 | 2,168 | 0.0% | - | - | - | |
| Adams-Columbia Electric Coop | Live · county | 0 | 3 | 0.0% | - | - | - | |
| Wisconsin Electric Power Co | Live · county | 0 | - | - | - | 0 | - | |
| Jefferson Utilities | No live feed | can't see | - | - | - | - | - | - |
| Lake Mills Light & Water | No live feed | can't see | - | - | - | - | - | - |
| Waterloo Light & Water Comm | No live feed | can't see | - | - | - | - | - | - |
Wisconsin Power & Light Co, Adams-Columbia Electric Coop and Wisconsin Electric Power Co reportevery town in the county on each poll, so 0 out is a real all-clear. ETRs are the utility's own estimates.
Electricity-dependent residents
HHS emPOWER · data October 7, 2026Medicare beneficiaries in Jefferson 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.
By ZIP code (10)
| ZIP | Power-dependent | Ventilators | O2 concentrators | Home dialysis |
|---|---|---|---|---|
| 53094 | 153 | ≤11 | 105 | ≤11 |
| 53538 | 133 | ≤11 | 98 | ≤11 |
| 53549 | 88 | ≤11 | 65 | ≤11 |
| 53551 | 49 | ≤11 | 37 | ≤11 |
| 53156 | 32 | 0 | 24 | ≤11 |
| 53038 | 32 | ≤11 | 24 | ≤11 |
| 53594 | 31 | 0 | 21 | 0 |
| 53178 | 29 | 0 | 17 | ≤11 |
| 53137 | 15 | 0 | ≤11 | 0 |
| 53036 | 15 | 0 | ≤11 | ≤11 |
Emergency managers can request identified beneficiary lists through their state health department via the HHS emPOWER program.
Outage began, grew, restoration estimate changed, restored: by email, Slack, Teams, Discord or signed webhook, for Jefferson County or any town and utility in it.
No active NWS alerts for Jefferson County right now.
Jefferson County has been under 11 National Weather Service alerts recently, most recently a Freeze Warning on October 17, 2026.
- Flood Watch ×6
- Freeze Warning ×3
- Freeze Watch ×1
- Special Weather Statement ×1
Latest Jefferson County, WI outage updates
A running log of how this outage has changed, updated automatically as utilities report in.
- RESOLVED
Power restored after 2h 30m
- OUTAGE BEGAN
Outage began: 827 customers out (2.2% of the county)
- RESOLVED
Power restored after 3h 59m
- OUTAGE BEGAN
Outage began: 1,395 customers out (4.0% of the county)
Hardest-hit cities in Jefferson County
Where this event is concentrated across the county's towns and townships.
Historical reliability
In 2025, the average customer in Jefferson County went about 5.4 hours without power. Peak simultaneous outage on record reached 13,807 customers.
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 5.4 hrs.
Worst year here was 2023 (peak 12,904 customers out) · decade average 4.6 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2015 | 299 | 5,251 | 2.0 |
| 2016 | 358 | 2,518 | 1.4 |
| 2017 | 408 | 5,253 | 2.9 |
| 2018 | 377 | 5,472 | 3.2 |
| 2019 | 373 | 5,853 | 3.5 |
| 2020 | 461 | 5,926 | 1.8 |
| 2021 | 432 | 6,941 | 5.7 |
| 2022 | 469 | 8,397 | 4.8 |
| 2023 | 511 | 12,904 | 15.9 |
| 2024 | 517 | 13,807 | 4.5 |
| 2025 | 523 | 7,953 | 5.4 |
Cost of power in Jefferson County
ENERGY & AI DEMAND →Estimated residential electricity price for Jefferson 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.
- Wisconsin Electric Power Co20.5¢1,056,086 cust
- Wisconsin Power & Light Co18.5¢440,746 cust
- Adams-Columbia Electric Coop19.0¢36,159 cust
- Lake Mills Light & Water14.5¢4,134 cust
- Jefferson Utilities12.4¢3,752 cust
- Waterloo Light & Water Comm14.7¢1,621 cust
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.
Relatively Moderate high winds exposure · 4.6 hrs/yr of outages over the last decade.
Power outages in Jefferson County: FAQ
- How often does Jefferson County, WI lose power?
- Based on EAGLE-I records, Jefferson County, WI logged 523 distinct outage events in 2025, averaging about 5.4 hours without power per customer over the year.
- What was the worst power outage in Jefferson County, WI?
- The largest tracked outage peaked at 13,807 customers without power, beginning May 29, 2024 and lasting about 10h 45m.
- Is there a power outage in Jefferson County, WI right now?
- No major outage is currently reported for Jefferson County, WI. Live coverage depends on whether local utilities report to ODIN.
- Which utilities serve Jefferson County, WI?
- Tracked electric providers include Wisconsin Electric Power Co, Wisconsin Power & Light Co.
Outages are tracked at the county level; these ZIP codes fall within Jefferson County.
53036, 53038, 53094, 53137, 53156, 53178, 53538, 53549, 53551, 53594
Electric providers serving this county
From EIA-861 service territory, with official reliability where reported.
| Provider | Official SAIDI (EIA) | Live | Report outage |
|---|---|---|---|
| Wisconsin Electric Power Co | 3.1 hrs | Live · county | - |
| Adams-Columbia Electric Coop | 1.8 hrs | Live · county | - |
| Wisconsin Power & Light Co | - | Live · county | - |
| Jefferson Utilities | - | No live feed | - |
| Lake Mills Light & Water | - | No live feed | - |
| Waterloo Light & Water Comm | - | 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/55055 and /api/v1/counties/55055/history.