County annual report · FIPS 55127
2019 Walworth County, WI Power Outage Report
In 2019, customers in Walworth County, WI went without power for an average of 4.1 hours, a total of 185K customer-hours (Wisconsin average 4.4 hours). That ranks 27th worst of 71 Wisconsin counties and 1315th 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 Walworth 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 | February 14, 2019 16:45 | February 14, 2019 18:45 | 2h | 7,472 | 1,871 |
| 2 | August 8, 2019 04:30 | August 9, 2019 08:15 | 1d 3h | 5,363 | 38K |
| 3 | February 7, 2019 02:00 | February 8, 2019 10:30 | 1d 8h | 4,006 | 24K |
| 4 | June 30, 2019 17:00 | July 1, 2019 23:15 | 1d 6h | 3,164 | 16K |
| 5 | July 31, 2019 12:30 | July 31, 2019 21:45 | 9h 15m | 3,101 | 793 |
| 6 | July 19, 2019 07:00 | July 19, 2019 17:45 | 10h 45m | 3,072 | 8,559 |
| 7 | June 27, 2019 21:45 | June 29, 2019 14:45 | 1d 17h | 2,727 | 9,523 |
| 8 | May 22, 2019 01:15 | May 22, 2019 16:00 | 14h 45m | 2,525 | 7,832 |
| 9 | February 13, 2019 03:15 | February 13, 2019 05:45 | 2h 30m | 2,124 | 3,857 |
| 10 | August 13, 2019 22:00 | August 14, 2019 04:00 | 6h | 1,611 | 3,670 |
Outage episodes by size in 2019: 72 reached 100+ customers, 18 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 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 |
| 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 84% of Wisconsin's customers in 2019; 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, 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/walworth-county