County annual report · FIPS 55049
2025 Iowa County, WI Power Outage Report
In 2025, customers in Iowa County, WI went without power for an average of 2.0 hours, a total of 18K customer-hours (Wisconsin average 3.9 hours). That ranks 43rd worst of 72 Wisconsin counties and 2420th of 3,000 nationally.
Compared with WI, the US and 2024
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Iowa County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 19, 2025 00:45 | July 19, 2025 03:00 | 2h 15m | 2,981 | 2,982 |
| 2 | November 3, 2025 23:15 | November 4, 2025 00:00 | 45m | 1,259 | 630 |
| 3 | August 10, 2025 09:00 | August 10, 2025 17:00 | 8h | 1,063 | 1,933 |
| 4 | March 16, 2025 20:15 | March 16, 2025 22:30 | 2h 15m | 754 | 848 |
| 5 | August 10, 2025 07:15 | August 10, 2025 08:15 | 1h | 691 | 691 |
| 6 | August 18, 2025 23:15 | August 19, 2025 05:30 | 6h 15m | 568 | 1,165 |
| 7 | May 6, 2025 12:15 | May 6, 2025 15:00 | 2h 45m | 491 | 262 |
| 8 | March 24, 2025 10:00 | March 24, 2025 14:45 | 4h 45m | 479 | 209 |
| 9 | November 8, 2025 17:30 | November 8, 2025 20:45 | 3h 15m | 469 | 354 |
| 10 | October 19, 2025 20:15 | October 19, 2025 22:00 | 1h 45m | 438 | 766 |
Outage episodes by size in 2025: 21 reached 100+ customers, 3 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 Iowa County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Scenic Rivers Energy Coop | - | - | - | - | - |
| Village of Muscoda - (WI) | - | - | - | - | - |
| Village of Black Earth - (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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 9,067 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. Iowa County has data for 2015–2017, 2020–2025.
Cite this report
MassOutage (massoutage.com), Iowa County, WI annual power outage report, 2025, 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/). https://massoutage.com/reports/2025/wisconsin/iowa-county