County annual report · FIPS 55105
2017 Rock County, WI Power Outage Report
In 2017, customers in Rock County, WI went without power for an average of 1.2 hours, a total of 69K customer-hours (Wisconsin average 2.9 hours). That ranks 53rd worst of 72 Wisconsin counties and 1948th of 2,786 nationally.
Compared with WI, the US and 2016
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Rock County, 2017
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 14, 2017 14:00 | July 14, 2017 19:15 | 5h 15m | 4,085 | 5,134 |
| 2 | June 13, 2017 00:30 | June 13, 2017 05:00 | 4h 30m | 2,244 | 1,792 |
| 3 | July 28, 2017 19:00 | July 28, 2017 20:45 | 1h 45m | 2,155 | 2,507 |
| 4 | October 13, 2017 13:45 | October 13, 2017 17:45 | 4h | 1,685 | 926 |
| 5 | June 25, 2017 00:15 | June 25, 2017 08:45 | 8h 30m | 1,644 | 4,037 |
| 6 | July 20, 2017 01:00 | July 21, 2017 04:00 | 1d 3h | 1,631 | 4,376 |
| 7 | June 29, 2017 00:45 | June 30, 2017 08:15 | 1d 7h | 1,438 | 12K |
| 8 | July 16, 2017 06:30 | July 16, 2017 14:30 | 8h | 1,321 | 1,708 |
| 9 | August 4, 2017 21:15 | August 4, 2017 22:15 | 1h | 1,312 | 993 |
| 10 | October 31, 2017 21:45 | October 31, 2017 23:15 | 1h 30m | 957 | 958 |
Outage episodes by size in 2017: 44 reached 100+ customers, 9 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 2017, 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 | 2017 | 2.3 hrs | 0.75 | 57 min | 0.51 |
| City of Stoughton - (WI) | 2017 | 2.7 hrs | 0.79 | 48 min | 0.65 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Rock Energy Cooperative | - | - | - | - | - |
| 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 2017; 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, 2017, 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/2017/wisconsin/rock-county