County annual report · FIPS 55111
2023 Sauk County, WI Power Outage Report
In 2023, customers in Sauk County, WI went without power for an average of 1.9 hours, a total of 114K customer-hours (Wisconsin average 3.4 hours). That ranks 39th worst of 72 Wisconsin counties and 2334th of 2,977 nationally.
Compared with WI, the US and 2022
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Sauk County, 2023
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 29, 2023 02:15 | July 31, 2023 03:45 | 2d 1h | 9,935 | 94K |
| 2 | January 28, 2023 14:15 | January 28, 2023 16:15 | 2h | 1,343 | 1,050 |
| 3 | September 13, 2023 13:15 | September 13, 2023 13:45 | 30m | 1,084 | 542 |
| 4 | September 6, 2023 18:45 | September 6, 2023 19:30 | 45m | 989 | 495 |
| 5 | July 12, 2023 21:00 | July 13, 2023 00:45 | 3h 45m | 768 | 423 |
| 6 | February 19, 2023 05:45 | February 19, 2023 08:45 | 3h | 728 | 1,386 |
| 7 | August 13, 2023 12:45 | August 13, 2023 15:00 | 2h 15m | 689 | 1,375 |
| 8 | June 20, 2023 16:00 | June 20, 2023 17:00 | 1h | 595 | 300 |
| 9 | July 20, 2023 15:00 | July 20, 2023 16:15 | 1h 15m | 594 | 446 |
| 10 | August 4, 2023 18:00 | August 4, 2023 18:15 | 15m | 579 | 145 |
Outage episodes by size in 2023: 39 reached 100+ customers, 3 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 2023, 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 | 2023 | 3.8 hrs | 1.09 | 3.8 hrs | 1.09 |
| Vernon Electric Coop | 2018 | 3.8 hrs | - | 2.4 hrs | - |
| Oakdale Electric Coop | 2023 | 2.6 hrs | 1.17 | 1.6 hrs | 0.94 |
| 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 2023; 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, 2023, 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/2023/wisconsin/sauk-county