County annual report · FIPS 55025
2019 Dane County, WI Power Outage Report
In 2019, customers in Dane County, WI went without power for an average of 0.7 hours, a total of 193K customer-hours (Wisconsin average 4.4 hours). That ranks 67th worst of 71 Wisconsin counties and 2627th of 2,945 nationally.
Compared with WI, the US and 2018
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Dane County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 29, 2019 12:15 | September 30, 2019 01:15 | 13h | 10,308 | 33K |
| 2 | April 4, 2019 11:45 | April 4, 2019 21:00 | 9h 15m | 6,017 | 8,443 |
| 3 | September 13, 2019 01:30 | September 13, 2019 19:00 | 17h 30m | 3,549 | 4,185 |
| 4 | July 19, 2019 21:45 | July 20, 2019 02:30 | 4h 45m | 3,295 | 1,773 |
| 5 | October 29, 2019 07:00 | October 29, 2019 21:45 | 14h 45m | 2,624 | 4,114 |
| 6 | September 9, 2019 14:30 | September 11, 2019 00:00 | 1d 9h | 2,156 | 8,231 |
| 7 | April 26, 2019 11:30 | April 26, 2019 18:00 | 6h 30m | 2,098 | 4,021 |
| 8 | July 20, 2019 12:45 | July 21, 2019 11:00 | 22h 15m | 1,908 | 4,286 |
| 9 | April 11, 2019 03:15 | April 11, 2019 20:30 | 17h 15m | 1,888 | 6,911 |
| 10 | May 28, 2019 06:30 | May 28, 2019 11:45 | 5h 15m | 1,764 | 2,219 |
Outage episodes by size in 2019: 123 reached 100+ customers, 22 reached 1,000+ customers, 1 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 Dane County reported on EIA Form 861 for 2019, 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 | 2018 | 2.0 hrs | 0.73 | 70 min | 0.59 |
| Adams-Columbia Electric Coop | 2018 | 6.5 hrs | 0.91 | 50 min | 0.46 |
| City of Stoughton - (WI) | 2018 | 4.0 hrs | 1.10 | 51 min | 0.65 |
| Madison Gas & Electric Co | 2018 | 57 min | 0.41 | 28 min | 0.29 |
| Sun Prairie Utilities | 2018 | 13 min | 0.32 | - | - |
| Village of Waunakee - (WI) | 2018 | 34 min | 0.30 | 34 min | 0.30 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Rock Energy Cooperative | - | - | - | - | - |
| Village of Black Earth - (WI) | - | - | - | - | - |
| Village of Mazomanie - (WI) | - | - | - | - | - |
| Village of Mt. Horeb - (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 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 295,516 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. Dane County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Dane County, WI annual power outage report, 2019, 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/2019/wisconsin/dane-county