County annual report · FIPS 55131
2015 Washington County, WI Power Outage Report
In 2015, customers in Washington County, WI went without power for an average of 2.0 hours, a total of 68K customer-hours (Wisconsin average 1.5 hours). That ranks 26th worst of 71 Wisconsin counties and 1246th of 2,484 nationally.
Compared with WI, the US
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Washington County, 2015
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 2, 2015 20:45 | August 3, 2015 19:15 | 22h 30m | 3,813 | 4,329 |
| 2 | August 15, 2015 00:00 | August 16, 2015 06:45 | 1d 6h | 2,611 | 19K |
| 3 | July 13, 2015 10:00 | July 14, 2015 07:45 | 21h 45m | 2,116 | 7,082 |
| 4 | June 22, 2015 16:15 | June 23, 2015 03:15 | 11h | 1,786 | 12K |
| 5 | November 23, 2015 11:30 | November 23, 2015 12:15 | 45m | 1,464 | 1,098 |
| 6 | July 18, 2015 11:30 | July 19, 2015 01:45 | 14h 15m | 932 | 7,111 |
| 7 | August 19, 2015 20:15 | August 20, 2015 01:30 | 5h 15m | 898 | 1,242 |
| 8 | August 10, 2015 16:45 | August 10, 2015 18:00 | 1h 15m | 807 | 411 |
| 9 | December 10, 2015 20:45 | December 11, 2015 03:15 | 6h 30m | 731 | 324 |
| 10 | July 28, 2015 18:45 | July 28, 2015 21:45 | 3h | 727 | 729 |
Outage episodes by size in 2015: 23 reached 100+ customers, 5 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 2015, 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 | 2015 | 2.1 hrs | 1.63 | 1.8 hrs | 1.38 |
| 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 2015; 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, 2015, 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/2015/wisconsin/washington-county