County annual report · FIPS 55049
2020 Iowa County, WI Power Outage Report
In 2020, customers in Iowa County, WI went without power for an average of 3.5 hours, a total of 32K customer-hours (Wisconsin average 1.8 hours). That ranks 16th worst of 72 Wisconsin counties and 1730th of 3,019 nationally.
Compared with WI, the US and 2017
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Iowa 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 | June 26, 2020 10:15 | June 26, 2020 17:00 | 6h 45m | 5,293 | 12K |
| 2 | November 24, 2020 20:00 | November 24, 2020 21:15 | 1h 15m | 1,717 | 1,299 |
| 3 | June 10, 2020 03:15 | June 10, 2020 06:30 | 3h 15m | 1,322 | 1,657 |
| 4 | July 17, 2020 09:15 | July 17, 2020 12:00 | 2h 45m | 1,212 | 2,414 |
| 5 | September 6, 2020 12:15 | September 6, 2020 18:15 | 6h | 548 | 1,475 |
| 6 | July 26, 2020 21:15 | July 27, 2020 01:15 | 4h | 533 | 1,323 |
| 7 | July 9, 2020 21:45 | July 10, 2020 10:00 | 12h 15m | 504 | 1,908 |
| 8 | June 3, 2020 01:15 | June 3, 2020 10:00 | 8h 45m | 497 | 947 |
| 9 | July 7, 2020 19:45 | July 8, 2020 04:00 | 8h 15m | 483 | 993 |
| 10 | April 20, 2020 22:15 | April 21, 2020 01:45 | 3h 30m | 248 | 374 |
Outage episodes by size in 2020: 15 reached 100+ customers, 4 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 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 |
|---|---|---|---|---|---|
| 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 84% of Wisconsin's customers in 2020; 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, 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/). https://massoutage.com/reports/2020/wisconsin/iowa-county