County annual report · FIPS 55131
2020 Washington County, WI Power Outage Report
In 2020, customers in Washington County, WI went without power for an average of 4.4 hours, a total of 153K customer-hours (Wisconsin average 1.8 hours). That ranks 11th worst of 72 Wisconsin counties and 1506th of 3,019 nationally.
Compared with WI, the US and 2019
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Washington County, 2020
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 20, 2020 22:15 | February 20, 2020 22:30 | 15m | 4,802 | 1,201 |
| 2 | June 3, 2020 02:00 | June 4, 2020 03:15 | 1d 1h | 3,529 | 22K |
| 3 | August 23, 2020 18:45 | August 23, 2020 21:15 | 2h 30m | 2,946 | 3,116 |
| 4 | September 10, 2020 15:00 | September 10, 2020 19:15 | 4h 15m | 2,926 | 5,561 |
| 5 | May 3, 2020 15:45 | May 3, 2020 17:15 | 1h 30m | 2,535 | 2,535 |
| 6 | July 19, 2020 10:15 | July 19, 2020 19:15 | 9h | 2,410 | 9,766 |
| 7 | September 4, 2020 09:30 | September 4, 2020 16:15 | 6h 45m | 2,247 | 4,714 |
| 8 | May 19, 2020 19:15 | May 19, 2020 20:15 | 1h | 2,127 | 534 |
| 9 | May 31, 2020 00:15 | May 31, 2020 00:30 | 15m | 2,116 | 529 |
| 10 | December 12, 2020 02:30 | December 12, 2020 23:45 | 21h 15m | 2,072 | 4,936 |
Outage episodes by size in 2020: 68 reached 100+ customers, 27 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 2020, 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 | 2020 | 2.3 hrs | 0.87 | 1.6 hrs | 0.70 |
| 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 84% of Wisconsin's customers in 2020; 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, 2020, 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/2020/wisconsin/washington-county