County annual report · FIPS 27021
2021 Cass County, MN Power Outage Report
In 2021, customers in Cass County, MN went without power for an average of 4.9 hours, a total of 117K customer-hours (Minnesota average 2.1 hours). That ranks 6th worst of 79 Minnesota counties and 1343rd of 2,974 nationally.
Compared with MN, the US and 2020
Coverage line is EAGLE-I's share of Minnesota customers tracked each year.
Biggest outages in Cass 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 | April 8, 2021 12:15 | April 8, 2021 17:15 | 5h | 1,971 | 4,507 |
| 2 | July 23, 2021 21:45 | July 26, 2021 21:45 | 3d | 1,596 | 6,592 |
| 3 | April 5, 2021 14:30 | April 5, 2021 18:00 | 3h 30m | 1,214 | 4,085 |
| 4 | April 27, 2021 22:00 | April 28, 2021 16:30 | 18h 30m | 1,205 | 2,994 |
| 5 | October 13, 2021 13:45 | October 13, 2021 20:15 | 6h 30m | 1,163 | 1,025 |
| 6 | June 12, 2021 21:45 | June 14, 2021 21:00 | 1d 23h | 1,132 | 3,519 |
| 7 | October 10, 2021 04:45 | October 10, 2021 10:00 | 5h 15m | 748 | 2,243 |
| 8 | March 8, 2021 14:30 | March 8, 2021 21:30 | 7h | 737 | 3,504 |
| 9 | June 8, 2021 07:00 | June 8, 2021 16:00 | 9h | 714 | 2,515 |
| 10 | July 26, 2021 23:30 | July 29, 2021 08:00 | 2d 8h | 710 | 6,180 |
Outage episodes by size in 2021: 71 reached 100+ customers, 6 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 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 |
|---|---|---|---|---|---|
| Otter Tail Power Co | 2021 | 86 min | 1.13 | 74 min | 1.09 |
| ALLETE, Inc. | 2021 | 2.5 hrs | 1.45 | 2.1 hrs | 1.34 |
| Lake Country Power | 2021 | 5.1 hrs | 2.13 | 2.7 hrs | 1.69 |
| Todd-Wadena Electric Coop | 2018 | 2.4 hrs | 0.70 | 2.4 hrs | 0.68 |
| Beltrami Electric Coop, Inc | 2017 | 1.6 hrs | 0.79 | 1.6 hrs | 0.79 |
| Itasca-Mantrap Co-op Electrical Assn | 2021 | 3.2 hrs | 1.95 | 2.5 hrs | 1.60 |
| Crow Wing Cooperative Power & Light Comp | 2021 | 1.5 hrs | 0.86 | 84 min | 0.84 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 80% of Minnesota's customers in 2021; 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, 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/minnesota/cass-county