County annual report · FIPS 26027
2017 Cass County, MI Power Outage Report
In 2017, customers in Cass County, MI went without power for an average of 40.8 hours, a total of 140K customer-hours (Michigan average 6.0 hours). That ranks 2nd worst of 80 Michigan counties and 109th of 2,786 nationally.
Compared with MI, the US and 2016
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Cass County, 2017
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 31, 2017 13:45 | July 31, 2017 17:15 | 3h 30m | 2,598 | 7,149 |
| 2 | March 1, 2017 02:15 | March 1, 2017 19:15 | 17h | 2,245 | 18K |
| 3 | May 21, 2017 04:45 | May 21, 2017 05:15 | 30m | 2,172 | 545 |
| 4 | April 27, 2017 14:45 | April 28, 2017 02:15 | 11h 30m | 1,703 | 5,911 |
| 5 | March 8, 2017 14:30 | March 10, 2017 20:15 | 2d 5h | 1,449 | 18K |
| 6 | December 8, 2017 21:30 | December 8, 2017 21:45 | 15m | 1,441 | 360 |
| 7 | April 30, 2017 12:00 | April 30, 2017 21:15 | 9h 15m | 1,237 | 4,758 |
| 8 | January 17, 2017 17:00 | January 18, 2017 02:00 | 9h | 1,145 | 10K |
| 9 | June 27, 2017 06:15 | June 27, 2017 08:45 | 2h 30m | 1,111 | 2,778 |
| 10 | December 18, 2017 23:00 | December 19, 2017 08:45 | 9h 45m | 1,042 | 4,021 |
Outage episodes by size in 2017: 59 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 2017, 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 | 2017 | 5.8 hrs | 1.56 | 3.9 hrs | 1.36 |
| 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 n/a of Michigan's customers in 2017; 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, 2017, 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/2017/michigan/cass-county