County annual report · FIPS 55047
2025 Green Lake County, WI Power Outage Report
In 2025, customers in Green Lake County, WI went without power for an average of 2.1 hours, a total of 35K customer-hours (Wisconsin average 3.9 hours). That ranks 40th worst of 72 Wisconsin counties and 2375th of 3,000 nationally.
Compared with WI, the US and 2024
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Green Lake County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 10, 2025 15:15 | January 10, 2025 17:45 | 2h 30m | 1,426 | 1,326 |
| 2 | August 16, 2025 17:00 | August 18, 2025 01:45 | 1d 8h | 1,044 | 7,489 |
| 3 | June 23, 2025 21:30 | June 25, 2025 01:00 | 1d 3h | 1,025 | 7,131 |
| 4 | July 30, 2025 13:30 | July 30, 2025 14:00 | 30m | 899 | 450 |
| 5 | June 11, 2025 08:00 | June 11, 2025 09:45 | 1h 45m | 746 | 933 |
| 6 | June 3, 2025 03:00 | June 3, 2025 04:45 | 1h 45m | 693 | 1,213 |
| 7 | May 21, 2025 13:30 | May 21, 2025 15:15 | 1h 45m | 554 | 871 |
| 8 | September 3, 2025 04:45 | September 3, 2025 09:30 | 4h 45m | 537 | 2,284 |
| 9 | March 10, 2025 13:45 | March 10, 2025 16:45 | 3h | 413 | 543 |
| 10 | October 4, 2025 14:15 | October 4, 2025 17:45 | 3h 30m | 322 | 324 |
Outage episodes by size in 2025: 23 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 Green Lake County reported on EIA Form 861 for 2025, 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 | 2024 | 2.3 hrs | 1.15 | 2.3 hrs | 1.15 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| City of Princeton - (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 n/a of Wisconsin's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 16,499 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. Green Lake County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Green Lake County, WI annual power outage report, 2025, 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/2025/wisconsin/green-lake-county