County annual report · FIPS 26027
2020 Cass County, MI Power Outage Report
In 2020, customers in Cass County, MI went without power for an average of 59.3 hours, a total of 203K customer-hours (Michigan average 9.8 hours). That ranks 3rd worst of 83 Michigan counties and 134th of 3,019 nationally.
Compared with MI, the US and 2019
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Cass County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 15, 2020 09:15 | May 15, 2020 16:30 | 7h 15m | 3,672 | 11K |
| 2 | August 10, 2020 21:00 | August 14, 2020 01:00 | 3d 4h | 3,568 | 61K |
| 3 | September 30, 2020 18:45 | October 1, 2020 02:45 | 8h | 2,347 | 8,264 |
| 4 | November 26, 2020 15:15 | November 26, 2020 16:45 | 1h 30m | 1,708 | 435 |
| 5 | September 25, 2020 08:45 | September 26, 2020 02:45 | 18h | 1,697 | 7,015 |
| 6 | December 19, 2020 08:45 | December 19, 2020 09:45 | 1h | 1,128 | 283 |
| 7 | February 8, 2020 04:45 | February 8, 2020 09:15 | 4h 30m | 1,107 | 4,426 |
| 8 | November 10, 2020 20:30 | November 12, 2020 00:30 | 1d 4h | 929 | 4,930 |
| 9 | August 29, 2020 03:45 | August 29, 2020 22:45 | 19h | 909 | 8,136 |
| 10 | May 7, 2020 11:45 | May 7, 2020 22:30 | 10h 45m | 846 | 908 |
Outage episodes by size in 2020: 100 reached 100+ customers, 7 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 2020, 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 |
|---|---|---|---|---|---|
| Indiana Michigan Power Co | 2020 | 7.9 hrs | 1.27 | 3.3 hrs | 1.01 |
| Midwest Energy Cooperative - (MI) | 2014 | 9.8 hrs | 2.23 | 4.9 hrs | 1.87 |
| Wolverine Power Supply Coop | - | - | - | - | - |
| City of Dowagiac | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 95% of Michigan's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 3,423 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, MI annual power outage report, 2020, 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/2020/michigan/cass-county