County annual report · FIPS 55111
2017 Sauk County, WI Power Outage Report
In 2017, customers in Sauk County, WI went without power for an average of 1.5 hours, a total of 90K customer-hours (Wisconsin average 2.9 hours). That ranks 48th worst of 72 Wisconsin counties and 1834th 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 Sauk 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 | December 5, 2017 01:30 | December 5, 2017 13:15 | 11h 45m | 7,586 | 8,279 |
| 2 | July 20, 2017 00:45 | July 22, 2017 18:30 | 2d 17h | 3,791 | 29K |
| 3 | June 14, 2017 18:45 | June 15, 2017 03:00 | 8h 15m | 3,448 | 8,407 |
| 4 | March 8, 2017 10:00 | March 8, 2017 23:45 | 13h 45m | 1,975 | 4,714 |
| 5 | October 2, 2017 15:30 | October 2, 2017 20:00 | 4h 30m | 1,884 | 497 |
| 6 | August 24, 2017 17:00 | August 24, 2017 19:00 | 2h | 1,223 | 1,225 |
| 7 | March 6, 2017 20:30 | March 6, 2017 22:45 | 2h 15m | 1,219 | 579 |
| 8 | May 26, 2017 13:15 | May 26, 2017 17:30 | 4h 15m | 1,168 | 889 |
| 9 | July 12, 2017 10:15 | July 12, 2017 21:30 | 11h 15m | 971 | 1,301 |
| 10 | June 24, 2017 23:15 | June 25, 2017 01:45 | 2h 30m | 923 | 1,040 |
Outage episodes by size in 2017: 49 reached 100+ customers, 8 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 Sauk 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 |
|---|---|---|---|---|---|
| Adams-Columbia Electric Coop | 2017 | 5.8 hrs | 1.20 | 2.4 hrs | 0.78 |
| Vernon Electric Coop | 2017 | 4.6 hrs | - | 2.1 hrs | - |
| Oakdale Electric Coop | 2017 | 4.3 hrs | 1.83 | 3.1 hrs | 1.47 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Richland Electric Coop | - | - | - | - | - |
| Wisconsin Dells Electric Util | - | - | - | - | - |
| Reedsburg Utility Comm | - | - | - | - | - |
| Village of Prairie Du Sac - (WI) | - | - | - | - | - |
| Village of Sauk City - (WI) | - | - | - | - | - |
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 ÷ 60,955 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. Sauk County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sauk 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/sauk-county