Power Outages in Rock County, WI
As of July 18, 2026 18:54 UTC, about 1 customers are without power in Rock County, WI across 1 reported incident. In 2025, the average customer here lost power for about 1.8 hours.
Rock County, WI is served by 1 tracked utility.
- Air Quality AlertUNKNOWN
Rock County has been under 9 National Weather Service alerts recently — most recently a Air Quality Alert on July 18, 2026.
- Heat Advisory ×5
- Air Quality Alert ×4
Latest Rock County, WI outage updates
A running log of how this outage has changed — updated automatically as utilities report in.
- RESOLVED
Power restored after 43m
- OUTAGE BEGAN
Outage began — 635 customers out
Hardest-hit cities in Rock County
Where this event is concentrated across the county's towns and townships.
Live outage counts are tracked at the county level; a city-by-city split within Rock Countyisn't available yet.
Historical reliability
In 2025, the average customer in Rock County went about 1.8 hours without power. Peak simultaneous outage on record reached 12,673 customers.
Worst year here was 2024 (peak 12,673 customers out) · decade average 1.6 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2015 | 751 | 9,902 | 1.8 |
| 2016 | 113 | 599 | 0.1 |
| 2017 | 503 | 4,085 | 1.2 |
| 2018 | 835 | 3,389 | 1.4 |
| 2019 | 850 | 9,625 | 1.7 |
| 2020 | 912 | 3,542 | 1.5 |
| 2021 | 936 | 3,101 | 1.6 |
| 2022 | 895 | 3,078 | 1.4 |
| 2023 | 849 | 4,700 | 2.1 |
| 2024 | 866 | 12,673 | 3.4 |
| 2025 | 885 | 2,902 | 1.8 |
Relatively High high winds exposure · 1.6 hrs/yr of outages over the last decade.
Power outages in Rock County: FAQ
- How often does Rock County, WI lose power?
- Based on EAGLE-I records, Rock County, WI logged 885 distinct outage events in 2025, averaging about 1.8 hours without power per customer over the year.
- What was the worst power outage in Rock County, WI?
- The largest tracked outage peaked at 12,673 customers without power, beginning July 15, 2024 and lasting about 2d 2h.
- Is there a power outage in Rock County, WI right now?
- Yes — about 1 customers are currently without power across 1 reported incident(s).
- Which utilities serve Rock County, WI?
- Tracked electric providers include Alliant Energy (Interstate Power & Light).
Janesville. Outage counts for these communities are reported at the Rock County level shown above.
Outages are tracked at the county level; these ZIP codes fall within Rock County.
53501, 53505, 53511, 53520, 53525, 53534, 53536, 53537, 53545, 53546, 53548, 53563, 53576
Electric providers serving this county
From EIA-861 service territory, with official reliability where reported.
| Provider | Official SAIDI (EIA) | Live | Report outage |
|---|---|---|---|
| Alliant Energy (Interstate Power & Light) | — | ODIN ✓ | — |
Machine-readable data: /api/v1/counties/55105 and /api/v1/counties/55105/history. Historical figures derive from the DOE/ORNL EAGLE-I dataset (EAGLE-I tracked roughly 0% of Wisconsin customers). Live data as of .