County annual report · FIPS 55049
2023 Iowa County, WI Power Outage Report
In 2023, customers in Iowa County, WI went without power for an average of 2.7 hours, a total of 24K customer-hours (Wisconsin average 3.4 hours). That ranks 25th worst of 72 Wisconsin counties and 2054th of 2,977 nationally.
Compared with WI, the US and 2022
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Iowa County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 31, 2023 22:15 | April 1, 2023 13:30 | 15h 15m | 2,304 | 6,586 |
| 2 | November 15, 2023 20:30 | November 15, 2023 21:45 | 1h 15m | 1,547 | 1,297 |
| 3 | May 29, 2023 02:15 | May 29, 2023 03:15 | 1h | 1,251 | 937 |
| 4 | February 23, 2023 13:45 | February 23, 2023 14:45 | 1h | 969 | 968 |
| 5 | August 17, 2023 16:15 | August 17, 2023 17:15 | 1h | 614 | 584 |
| 6 | April 17, 2023 05:30 | April 17, 2023 14:00 | 8h 30m | 575 | 546 |
| 7 | June 1, 2023 15:15 | June 1, 2023 18:45 | 3h 30m | 487 | 254 |
| 8 | April 5, 2023 18:00 | April 5, 2023 19:45 | 1h 45m | 475 | 239 |
| 9 | May 26, 2023 10:00 | May 26, 2023 21:00 | 11h | 424 | 572 |
| 10 | July 29, 2023 03:15 | July 30, 2023 15:15 | 1d 12h | 424 | 1,160 |
Outage episodes by size in 2023: 24 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 2023, 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 2023; 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, 2023, 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/2023/wisconsin/iowa-county