County annual report · FIPS 26027
2024 Cass County, MI Power Outage Report
In 2024, customers in Cass County, MI went without power for an average of 75.0 hours, a total of 257K customer-hours (Michigan average 8.5 hours). That ranks 2nd worst of 83 Michigan counties and 127th of 2,990 nationally.
Compared with MI, the US and 2023
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Cass County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 16, 2024 02:30 | July 18, 2024 09:30 | 2d 7h | 4,081 | 35K |
| 2 | June 25, 2024 12:00 | June 26, 2024 00:30 | 12h 30m | 2,499 | 8,427 |
| 3 | May 7, 2024 21:15 | May 10, 2024 20:30 | 2d 23h | 2,147 | 41K |
| 4 | June 17, 2024 01:30 | June 18, 2024 23:30 | 1d 22h | 2,090 | 27K |
| 5 | July 19, 2024 02:00 | July 19, 2024 06:00 | 4h | 1,752 | 2,150 |
| 6 | June 1, 2024 20:15 | June 1, 2024 23:30 | 3h 15m | 1,750 | 4,941 |
| 7 | June 2, 2024 01:00 | June 2, 2024 02:15 | 1h 15m | 1,749 | 2,186 |
| 8 | July 9, 2024 13:30 | July 10, 2024 06:00 | 16h 30m | 1,740 | 7,969 |
| 9 | July 10, 2024 07:30 | July 11, 2024 04:30 | 21h | 1,739 | 2,659 |
| 10 | June 13, 2024 20:45 | June 15, 2024 01:00 | 1d 4h | 1,721 | 14K |
Outage episodes by size in 2024: 96 reached 100+ customers, 14 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 2024, 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 | 2024 | 4.3 hrs | 1.25 | 2.5 hrs | 1.08 |
| Midwest Energy Cooperative - (MI) | 2024 | 7.2 hrs | 1.60 | 4.6 hrs | 1.30 |
| 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 n/a of Michigan's customers in 2024; 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, 2024, 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/2024/michigan/cass-county