County annual report · FIPS 55131
2024 Washington County, WI Power Outage Report
In 2024, customers in Washington County, WI went without power for an average of 8.4 hours, a total of 287K customer-hours (Wisconsin average 4.6 hours). That ranks 15th worst of 72 Wisconsin counties and 1079th 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 Washington 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 | August 27, 2024 17:00 | August 28, 2024 10:30 | 17h 30m | 6,085 | 34K |
| 2 | January 12, 2024 13:30 | January 16, 2024 18:00 | 4d 4h | 4,603 | 105K |
| 3 | November 11, 2024 15:30 | November 12, 2024 01:00 | 9h 30m | 2,413 | 4,194 |
| 4 | April 3, 2024 05:15 | April 3, 2024 22:30 | 17h 15m | 2,385 | 14K |
| 5 | July 25, 2024 14:45 | July 26, 2024 00:15 | 9h 30m | 2,284 | 4,938 |
| 6 | October 1, 2024 22:00 | October 2, 2024 01:15 | 3h 15m | 2,283 | 2,887 |
| 7 | April 16, 2024 23:30 | April 17, 2024 17:45 | 18h 15m | 1,895 | 9,133 |
| 8 | February 15, 2024 11:45 | February 15, 2024 18:00 | 6h 15m | 1,711 | 3,734 |
| 9 | August 2, 2024 00:00 | August 2, 2024 23:00 | 23h | 1,303 | 3,462 |
| 10 | July 14, 2024 02:00 | July 15, 2024 02:30 | 1d | 1,230 | 5,370 |
Outage episodes by size in 2024: 66 reached 100+ customers, 17 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 Washington 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 |
| Hartford Electric | - | - | - | - | - |
| Slinger Utilities | - | - | - | - | - |
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 ÷ 34,303 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. Washington County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Washington 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/washington-county