County annual report · FIPS 55105
2024 Rock County, WI Power Outage Report
In 2024, customers in Rock County, WI went without power for an average of 3.4 hours, a total of 192K customer-hours (Wisconsin average 4.6 hours). That ranks 34th worst of 72 Wisconsin counties and 1996th of 2,990 nationally.
Compared with WI, the US and 2023
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Rock County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 15, 2024 00:45 | July 17, 2024 03:15 | 2d 2h | 12,673 | 62K |
| 2 | June 23, 2024 00:45 | June 25, 2024 05:30 | 2d 4h | 6,407 | 43K |
| 3 | May 21, 2024 23:15 | May 23, 2024 23:15 | 2d | 2,342 | 7,633 |
| 4 | March 4, 2024 18:15 | March 5, 2024 07:00 | 12h 45m | 1,571 | 2,975 |
| 5 | May 28, 2024 07:00 | May 28, 2024 12:15 | 5h 15m | 1,280 | 2,612 |
| 6 | February 8, 2024 14:15 | February 9, 2024 08:15 | 18h | 1,252 | 3,666 |
| 7 | June 12, 2024 13:00 | June 13, 2024 09:15 | 20h 15m | 1,170 | 2,166 |
| 8 | June 28, 2024 08:30 | June 28, 2024 15:00 | 6h 30m | 1,110 | 1,938 |
| 9 | March 13, 2024 15:45 | March 13, 2024 19:15 | 3h 30m | 1,051 | 313 |
| 10 | April 29, 2024 22:30 | April 30, 2024 02:30 | 4h | 953 | 955 |
Outage episodes by size in 2024: 80 reached 100+ customers, 9 reached 1,000+ customers, 1 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Rock County reported on EIA Form 861 for 2024, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Wisconsin Electric Power Co | 2024 | 4.9 hrs | 1.04 | 1.8 hrs | 0.74 |
| Rock Energy Cooperative | 2024 | 53 min | 0.48 | 27 min | 0.36 |
| City of Stoughton - (WI) | 2024 | 56 min | 0.57 | 37 min | 0.44 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Brodhead Water & Lighting Comm | - | - | - | - | - |
| City of Evansville | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Wisconsin's customers in 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 56,401 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Rock County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Rock County, WI annual power outage report, 2024, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2024/wisconsin/rock-county