County annual report · FIPS 55127
2017 Walworth County, WI Power Outage Report
In 2017, customers in Walworth County, WI went without power for an average of 5.6 hours, a total of 254K customer-hours (Wisconsin average 2.9 hours). That ranks 21st worst of 72 Wisconsin counties and 899th 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 Walworth 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 12, 2017 04:30 | July 15, 2017 01:45 | 2d 21h | 7,329 | 39K |
| 2 | June 12, 2017 23:30 | June 14, 2017 01:15 | 1d 1h | 4,112 | 13K |
| 3 | May 17, 2017 18:45 | June 1, 2017 21:00 | 15d 2h | 3,289 | 48K |
| 4 | July 15, 2017 03:45 | July 17, 2017 16:00 | 2d 12h | 3,052 | 6,889 |
| 5 | April 17, 2017 09:00 | April 17, 2017 11:45 | 2h 45m | 2,736 | 6,156 |
| 6 | March 8, 2017 11:15 | March 10, 2017 05:15 | 1d 18h | 1,968 | 11K |
| 7 | July 10, 2017 07:45 | July 10, 2017 16:15 | 8h 30m | 1,660 | 3,204 |
| 8 | November 15, 2017 13:15 | November 15, 2017 16:00 | 2h 45m | 1,325 | 1,198 |
| 9 | July 2, 2017 01:30 | July 2, 2017 01:45 | 15m | 1,264 | 316 |
| 10 | March 1, 2017 06:45 | March 1, 2017 16:15 | 9h 30m | 1,239 | 2,963 |
Outage episodes by size in 2017: 68 reached 100+ customers, 11 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 Walworth 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 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Rock Energy Cooperative | - | - | - | - | - |
| City of Elkhorn - (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 ÷ 45,649 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. Walworth County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Walworth 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/walworth-county