County annual report · FIPS 55127
2024 Walworth County, WI Power Outage Report
In 2024, customers in Walworth County, WI went without power for an average of 8.9 hours, a total of 406K customer-hours (Wisconsin average 4.6 hours). That ranks 13th worst of 72 Wisconsin counties and 1027th 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 Walworth 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 | June 23, 2024 01:15 | June 26, 2024 22:45 | 3d 21h | 13,468 | 235K |
| 2 | August 5, 2024 21:45 | August 7, 2024 03:45 | 1d 6h | 7,212 | 22K |
| 3 | May 25, 2024 08:15 | May 25, 2024 10:30 | 2h 15m | 5,655 | 5,702 |
| 4 | July 14, 2024 00:45 | July 15, 2024 23:30 | 1d 22h | 4,350 | 24K |
| 5 | January 29, 2024 14:45 | January 30, 2024 00:15 | 9h 30m | 2,781 | 1,416 |
| 6 | January 12, 2024 14:00 | January 15, 2024 04:30 | 2d 14h | 2,634 | 31K |
| 7 | May 21, 2024 23:45 | May 23, 2024 05:45 | 1d 6h | 1,999 | 11K |
| 8 | May 7, 2024 19:45 | May 8, 2024 22:45 | 1d 3h | 1,938 | 18K |
| 9 | July 16, 2024 00:45 | July 16, 2024 10:45 | 10h | 1,653 | 6,626 |
| 10 | May 2, 2024 14:00 | May 2, 2024 18:15 | 4h 15m | 1,387 | 2,038 |
Outage episodes by size in 2024: 54 reached 100+ customers, 16 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 Walworth 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 |
|---|---|---|---|---|---|
| Wisconsin Electric Power Co | 2024 | 4.9 hrs | 1.04 | 1.8 hrs | 0.74 |
| Rock Energy Cooperative | 2024 | 53 min | 0.48 | 27 min | 0.36 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| 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 2024; 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, 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/walworth-county