County annual report · FIPS 55111
2020 Sauk County, WI Power Outage Report
In 2020, customers in Sauk County, WI went without power for an average of 0.8 hours, a total of 51K customer-hours (Wisconsin average 1.8 hours). That ranks 59th worst of 72 Wisconsin counties and 2727th of 3,019 nationally.
Compared with WI, the US and 2019
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Sauk County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 3, 2020 00:45 | June 4, 2020 01:15 | 1d | 2,934 | 18K |
| 2 | September 6, 2020 10:15 | September 6, 2020 22:45 | 12h 30m | 2,295 | 3,259 |
| 3 | September 16, 2020 05:45 | September 16, 2020 12:00 | 6h 15m | 1,238 | 940 |
| 4 | July 15, 2020 03:00 | July 15, 2020 09:45 | 6h 45m | 1,225 | 3,345 |
| 5 | June 6, 2020 11:30 | June 6, 2020 12:15 | 45m | 1,219 | 914 |
| 6 | October 14, 2020 17:00 | October 14, 2020 20:00 | 3h | 1,132 | 956 |
| 7 | June 26, 2020 21:30 | June 26, 2020 22:30 | 1h | 1,119 | 566 |
| 8 | February 15, 2020 05:15 | February 15, 2020 08:00 | 2h 45m | 1,061 | 2,060 |
| 9 | November 22, 2020 10:15 | November 22, 2020 12:15 | 2h | 1,058 | 2,116 |
| 10 | June 9, 2020 13:15 | June 9, 2020 16:15 | 3h | 1,006 | 1,007 |
Outage episodes by size in 2020: 35 reached 100+ customers, 10 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 2020, 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 | 2020 | 2.6 hrs | 0.71 | 2.6 hrs | 0.71 |
| Vernon Electric Coop | 2018 | 3.8 hrs | - | 2.4 hrs | - |
| Oakdale Electric Coop | 2020 | 1.9 hrs | 1.01 | 1.5 hrs | 0.92 |
| 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 84% of Wisconsin's customers in 2020; 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, 2020, 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/2020/wisconsin/sauk-county