County annual report · FIPS 27021
2025 Cass County, MN Power Outage Report
In 2025, customers in Cass County, MN went without power for an average of 9.9 hours, a total of 234K customer-hours (Minnesota average 3.7 hours). That ranks 3rd worst of 85 Minnesota counties and 813th of 3,000 nationally.
Compared with MN, the US and 2024
Coverage line is EAGLE-I's share of Minnesota customers tracked each year.
Biggest outages in Cass 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 | June 21, 2025 04:30 | June 26, 2025 04:30 | 5d | 7,469 | 104K |
| 2 | August 6, 2025 08:15 | August 7, 2025 03:00 | 18h 45m | 2,162 | 12K |
| 3 | June 13, 2025 02:15 | June 13, 2025 04:45 | 2h 30m | 1,679 | 3,773 |
| 4 | November 29, 2025 18:30 | December 1, 2025 17:15 | 1d 22h | 1,664 | 4,992 |
| 5 | May 7, 2025 13:30 | May 7, 2025 19:00 | 5h 30m | 1,521 | 1,163 |
| 6 | July 23, 2025 10:00 | July 24, 2025 05:00 | 19h | 1,318 | 3,883 |
| 7 | February 24, 2025 15:15 | February 24, 2025 19:30 | 4h 15m | 1,299 | 332 |
| 8 | March 6, 2025 03:45 | March 6, 2025 11:15 | 7h 30m | 1,297 | 6,506 |
| 9 | July 4, 2025 10:45 | July 5, 2025 20:45 | 1d 10h | 1,119 | 18K |
| 10 | April 16, 2025 13:45 | April 16, 2025 20:00 | 6h 15m | 1,065 | 1,846 |
Outage episodes by size in 2025: 70 reached 100+ customers, 11 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 Cass 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 |
|---|---|---|---|---|---|
| Otter Tail Power Co | 2024 | 2.6 hrs | 1.37 | 1.9 hrs | 1.09 |
| ALLETE, Inc. | 2024 | 2.0 hrs | 1.30 | 2.0 hrs | 1.30 |
| Lake Country Power | 2024 | 6.2 hrs | 2.31 | 3.1 hrs | 1.52 |
| Todd-Wadena Electric Coop | 2018 | 2.4 hrs | 0.70 | 2.4 hrs | 0.68 |
| Beltrami Electric Coop, Inc | 2024 | 2.0 hrs | 1.31 | 1.6 hrs | 1.18 |
| Itasca-Mantrap Co-op Electrical Assn | 2024 | 2.5 hrs | 1.54 | 1.8 hrs | 1.38 |
| Crow Wing Cooperative Power & Light Comp | 2024 | 2.0 hrs | 0.82 | 74 min | 0.65 |
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 Minnesota's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 23,771 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. Cass County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cass County, MN 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/minnesota/cass-county