County annual report · FIPS 55025
2017 Dane County, WI Power Outage Report
In 2017, customers in Dane County, WI went without power for an average of 0.7 hours, a total of 203K customer-hours (Wisconsin average 2.9 hours). That ranks 66th worst of 72 Wisconsin counties and 2196th 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 Dane 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 | July 19, 2017 11:30 | July 23, 2017 07:15 | 3d 19h | 15,944 | 79K |
| 2 | June 14, 2017 18:00 | June 15, 2017 12:45 | 18h 45m | 3,434 | 9,126 |
| 3 | December 18, 2017 15:30 | December 18, 2017 17:15 | 1h 45m | 3,022 | 5,287 |
| 4 | June 24, 2017 23:00 | June 25, 2017 16:15 | 17h 15m | 2,262 | 4,883 |
| 5 | July 10, 2017 04:30 | July 10, 2017 19:00 | 14h 30m | 2,260 | 6,150 |
| 6 | July 8, 2017 03:00 | July 8, 2017 03:15 | 15m | 2,217 | 554 |
| 7 | August 2, 2017 10:15 | August 2, 2017 20:45 | 10h 30m | 2,088 | 2,336 |
| 8 | December 1, 2017 14:30 | December 1, 2017 21:45 | 7h 15m | 1,743 | 1,299 |
| 9 | January 4, 2017 15:15 | January 4, 2017 18:30 | 3h 15m | 1,509 | 758 |
| 10 | March 15, 2017 19:15 | March 15, 2017 19:30 | 15m | 1,476 | 369 |
Outage episodes by size in 2017: 108 reached 100+ customers, 17 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 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 |
|---|---|---|---|---|---|
| Wisconsin Electric Power Co | 2017 | 2.3 hrs | 0.75 | 57 min | 0.51 |
| Adams-Columbia Electric Coop | 2017 | 5.8 hrs | 1.20 | 2.4 hrs | 0.78 |
| City of Stoughton - (WI) | 2017 | 2.7 hrs | 0.79 | 48 min | 0.65 |
| Madison Gas & Electric Co | 2017 | 41 min | 0.35 | 36 min | 0.33 |
| Sun Prairie Utilities | 2017 | 18 min | 0.55 | - | - |
| Village of Waunakee - (WI) | 2017 | 3 min | 0.02 | 3 min | 0.02 |
| 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 n/a of Wisconsin's customers in 2017; 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, 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/dane-county