County annual report · FIPS 55001
2021 Adams County, WI Power Outage Report
In 2021, customers in Adams County, WI went without power for an average of 1.8 hours, a total of 38K customer-hours (Wisconsin average 4.7 hours). That ranks 47th worst of 72 Wisconsin counties and 2312th of 2,974 nationally.
Compared with WI, the US and 2020
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Adams County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 16, 2021 04:45 | December 17, 2021 21:00 | 1d 16h | 1,525 | 6,573 |
| 2 | October 14, 2021 09:00 | October 14, 2021 11:30 | 2h 30m | 1,367 | 1,186 |
| 3 | June 4, 2021 23:00 | June 5, 2021 00:45 | 1h 45m | 1,318 | 1,884 |
| 4 | May 21, 2021 12:15 | May 21, 2021 14:15 | 2h | 993 | 1,242 |
| 5 | October 7, 2021 13:45 | October 7, 2021 19:30 | 5h 45m | 890 | 923 |
| 6 | April 15, 2021 20:15 | April 15, 2021 22:00 | 1h 45m | 879 | 830 |
| 7 | April 5, 2021 14:30 | April 5, 2021 18:30 | 4h | 877 | 1,545 |
| 8 | May 6, 2021 10:00 | May 6, 2021 12:00 | 2h | 864 | 1,388 |
| 9 | November 16, 2021 15:00 | November 17, 2021 20:45 | 1d 5h | 703 | 906 |
| 10 | July 16, 2021 11:30 | July 16, 2021 23:45 | 12h 15m | 678 | 462 |
Outage episodes by size in 2021: 38 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 Adams County reported on EIA Form 861 for 2021, 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 |
|---|---|---|---|---|---|
| Adams-Columbia Electric Coop | 2021 | 1.7 hrs | 0.74 | 1.7 hrs | 0.74 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| Pioneer Power and Light Co | - | - | - | - | - |
| Wisconsin Dells Electric Util | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 85% of Wisconsin's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 20,787 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. Adams County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Adams County, WI annual power outage report, 2021, 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/2021/wisconsin/adams-county