County annual report · FIPS 55097
2024 Portage County, WI Power Outage Report
In 2024, customers in Portage County, WI went without power for an average of 1.6 hours, a total of 43K customer-hours (Wisconsin average 4.6 hours). That ranks 52nd worst of 72 Wisconsin counties and 2529th of 2,990 nationally.
Compared with WI, the US and 2023
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Portage County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 2, 2024 21:15 | April 4, 2024 05:30 | 1d 8h | 3,450 | 6,829 |
| 2 | April 12, 2024 01:30 | April 12, 2024 03:15 | 1h 45m | 2,823 | 4,924 |
| 3 | July 10, 2024 08:45 | July 10, 2024 10:00 | 1h 15m | 2,806 | 3,508 |
| 4 | October 22, 2024 15:00 | October 22, 2024 17:00 | 2h | 2,263 | 1,059 |
| 5 | August 16, 2024 12:15 | August 16, 2024 14:00 | 1h 45m | 1,785 | 1,412 |
| 6 | January 30, 2024 16:45 | January 30, 2024 21:00 | 4h 15m | 767 | 388 |
| 7 | September 22, 2024 08:00 | September 22, 2024 19:45 | 11h 45m | 634 | 7,084 |
| 8 | October 31, 2024 07:45 | October 31, 2024 11:45 | 4h | 471 | 1,123 |
| 9 | April 16, 2024 19:30 | April 17, 2024 17:15 | 21h 45m | 436 | 1,608 |
| 10 | April 17, 2024 23:30 | April 18, 2024 00:45 | 1h 15m | 410 | 513 |
Outage episodes by size in 2024: 29 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 Portage County reported on EIA Form 861 for 2024, 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 Public Service Corp | 2024 | 7.8 hrs | 1.22 | 1.6 hrs | 0.77 |
| Adams-Columbia Electric Coop | 2024 | 2.3 hrs | 1.15 | 2.3 hrs | 1.15 |
| Central Wisconsin Elec Coop | 2018 | 2.5 hrs | 1.27 | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Consolidated Water Power Co | - | - | - | - | - |
| Wisconsin Rapids W W & L Comm | - | - | - | - | - |
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 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 27,174 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. Portage County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Portage County, WI annual power outage report, 2024, 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/2024/wisconsin/portage-county