County annual report · FIPS 55097
2019 Portage County, WI Power Outage Report
In 2019, customers in Portage County, WI went without power for an average of 26.3 hours, a total of 715K customer-hours (Wisconsin average 4.4 hours). That ranks 8th worst of 71 Wisconsin counties and 146th of 2,945 nationally.
Compared with WI, the US and 2018
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Portage County, 2019
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 20, 2019 02:00 | July 27, 2019 03:30 | 7d 1h | 17,096 | 578K |
| 2 | February 24, 2019 04:45 | February 26, 2019 04:15 | 1d 23h | 6,214 | 63K |
| 3 | August 7, 2019 21:30 | August 8, 2019 14:45 | 17h 15m | 5,002 | 8,831 |
| 4 | May 22, 2019 05:45 | May 22, 2019 22:15 | 16h 30m | 4,595 | 17K |
| 5 | December 12, 2019 19:15 | December 12, 2019 21:30 | 2h 15m | 3,133 | 3,649 |
| 6 | October 4, 2019 21:45 | October 5, 2019 02:30 | 4h 45m | 3,001 | 1,287 |
| 7 | May 7, 2019 13:30 | May 7, 2019 20:15 | 6h 45m | 2,092 | 708 |
| 8 | April 11, 2019 23:15 | April 12, 2019 15:45 | 16h 30m | 2,028 | 5,417 |
| 9 | April 18, 2019 00:45 | April 18, 2019 08:00 | 7h 15m | 1,950 | 1,849 |
| 10 | June 21, 2019 22:45 | June 21, 2019 23:45 | 1h | 1,747 | 1,310 |
Outage episodes by size in 2019: 54 reached 100+ customers, 12 reached 1,000+ customers, 1 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 2019, 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 | 2018 | 2.0 hrs | 0.97 | 1.8 hrs | 0.94 |
| Adams-Columbia Electric Coop | 2018 | 6.5 hrs | 0.91 | 50 min | 0.46 |
| 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 84% of Wisconsin's customers in 2019; 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, 2019, 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/2019/wisconsin/portage-county