County annual report · FIPS 55105
2022 Rock County, WI Power Outage Report
In 2022, customers in Rock County, WI went without power for an average of 1.4 hours, a total of 78K customer-hours (Wisconsin average 4.6 hours). That ranks 59th worst of 72 Wisconsin counties and 2551st of 2,976 nationally.
Compared with WI, the US and 2021
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Rock County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 7, 2022 06:15 | August 7, 2022 17:45 | 11h 30m | 3,078 | 4,921 |
| 2 | September 19, 2022 16:00 | September 19, 2022 17:00 | 1h | 2,622 | 1,967 |
| 3 | February 11, 2022 06:15 | February 11, 2022 10:15 | 4h | 2,618 | 2,098 |
| 4 | January 13, 2022 02:45 | January 13, 2022 04:45 | 2h | 1,645 | 1,053 |
| 5 | August 2, 2022 14:15 | August 2, 2022 23:15 | 9h | 1,510 | 1,726 |
| 6 | December 15, 2022 07:15 | December 15, 2022 21:00 | 13h 45m | 1,445 | 3,783 |
| 7 | October 23, 2022 13:15 | October 23, 2022 16:00 | 2h 45m | 1,341 | 1,679 |
| 8 | July 24, 2022 07:15 | July 24, 2022 21:45 | 14h 30m | 1,331 | 4,991 |
| 9 | August 28, 2022 20:15 | August 29, 2022 01:45 | 5h 30m | 1,211 | 1,046 |
| 10 | March 25, 2022 21:30 | March 26, 2022 01:00 | 3h 30m | 1,104 | 829 |
Outage episodes by size in 2022: 81 reached 100+ customers, 11 reached 1,000+ customers, 0 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 2022, 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 | 2022 | 4.7 hrs | 1.05 | 2.0 hrs | 0.82 |
| Rock Energy Cooperative | 2022 | 13 min | 0.48 | - | - |
| City of Stoughton - (WI) | 2022 | 72 min | 0.59 | 34 min | 0.32 |
| 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 85% of Wisconsin's customers in 2022; 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, 2022, 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/2022/wisconsin/rock-county