County annual report · FIPS 55097
2017 Portage County, WI Power Outage Report
In 2017, customers in Portage County, WI went without power for an average of 26.0 hours, a total of 707K customer-hours (Wisconsin average 2.9 hours). That ranks 4th worst of 72 Wisconsin counties and 204th of 2,786 nationally.
Compared with WI, the US and 2016
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Portage County, 2017
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 12, 2017 23:15 | June 17, 2017 01:15 | 4d 2h | 18,682 | 622K |
| 2 | July 20, 2017 00:30 | July 20, 2017 06:30 | 6h | 4,214 | 5,988 |
| 3 | August 6, 2017 04:15 | August 6, 2017 11:00 | 6h 45m | 3,373 | 10K |
| 4 | December 21, 2017 13:15 | December 21, 2017 15:45 | 2h 30m | 2,760 | 2,191 |
| 5 | March 7, 2017 04:15 | March 9, 2017 22:00 | 2d 17h | 2,597 | 44K |
| 6 | October 24, 2017 13:00 | October 24, 2017 19:00 | 6h | 2,587 | 1,557 |
| 7 | May 18, 2017 02:30 | May 18, 2017 23:15 | 20h 45m | 1,157 | 4,211 |
| 8 | June 17, 2017 02:15 | June 17, 2017 11:45 | 9h 30m | 732 | 1,541 |
| 9 | June 10, 2017 16:00 | June 10, 2017 17:45 | 1h 45m | 631 | 786 |
| 10 | June 22, 2017 12:00 | June 23, 2017 00:45 | 12h 45m | 355 | 859 |
Outage episodes by size in 2017: 27 reached 100+ customers, 7 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 2017, 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 | 2017 | 8.8 hrs | 1.50 | 1.6 hrs | 0.80 |
| Adams-Columbia Electric Coop | 2017 | 5.8 hrs | 1.20 | 2.4 hrs | 0.78 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Central Wisconsin Elec Coop | - | - | - | - | - |
| 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 2017; 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, 2017, 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/2017/wisconsin/portage-county