County annual report · FIPS 55111
2024 Sauk County, WI Power Outage Report
In 2024, customers in Sauk County, WI went without power for an average of 1.4 hours, a total of 84K customer-hours (Wisconsin average 4.6 hours). That ranks 57th worst of 72 Wisconsin counties and 2601st 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 Sauk 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 | May 21, 2024 23:45 | May 23, 2024 23:15 | 1d 23h | 1,975 | 14K |
| 2 | May 21, 2024 17:30 | May 21, 2024 22:15 | 4h 45m | 1,532 | 2,308 |
| 3 | July 13, 2024 23:45 | July 15, 2024 01:15 | 1d 1h | 1,303 | 8,333 |
| 4 | October 26, 2024 22:15 | October 26, 2024 23:15 | 1h | 1,177 | 1,177 |
| 5 | November 14, 2024 07:15 | November 14, 2024 09:15 | 2h | 1,093 | 548 |
| 6 | October 29, 2024 21:15 | October 29, 2024 22:45 | 1h 30m | 1,089 | 1,290 |
| 7 | May 20, 2024 00:30 | May 20, 2024 01:15 | 45m | 1,063 | 797 |
| 8 | May 28, 2024 08:45 | May 28, 2024 18:45 | 10h | 1,056 | 1,884 |
| 9 | June 28, 2024 13:45 | June 28, 2024 17:15 | 3h 30m | 1,056 | 796 |
| 10 | May 6, 2024 12:00 | May 6, 2024 12:30 | 30m | 1,050 | 525 |
Outage episodes by size in 2024: 67 reached 100+ customers, 12 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 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 |
|---|---|---|---|---|---|
| Adams-Columbia Electric Coop | 2024 | 2.3 hrs | 1.15 | 2.3 hrs | 1.15 |
| Vernon Electric Coop | 2018 | 3.8 hrs | - | 2.4 hrs | - |
| Oakdale Electric Coop | 2024 | 2.5 hrs | 1.03 | 67 min | 0.69 |
| 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 2024; 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, 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/sauk-county