County annual report · FIPS 26025
2015 Calhoun County, MI Power Outage Report
In 2015, customers in Calhoun County, MI went without power for an average of 2.8 hours, a total of 256K customer-hours (Michigan average 6.8 hours). That ranks 62nd worst of 80 Michigan counties and 979th of 2,484 nationally.
Compared with MI, the US
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Calhoun County, 2015
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 13, 2015 19:15 | June 15, 2015 06:30 | 1d 11h | 6,334 | 31K |
| 2 | May 10, 2015 10:45 | May 10, 2015 17:45 | 7h | 5,875 | 17K |
| 3 | March 22, 2015 04:15 | March 22, 2015 15:00 | 10h 45m | 4,777 | 13K |
| 4 | June 22, 2015 18:00 | June 24, 2015 08:45 | 1d 14h | 3,442 | 25K |
| 5 | March 14, 2015 03:00 | March 14, 2015 08:00 | 5h | 2,379 | 11K |
| 6 | January 18, 2015 17:45 | January 19, 2015 05:15 | 11h 30m | 2,369 | 6,160 |
| 7 | April 24, 2015 16:00 | April 24, 2015 18:45 | 2h 45m | 2,251 | 1,756 |
| 8 | January 27, 2015 19:30 | January 27, 2015 20:00 | 30m | 2,138 | 788 |
| 9 | July 14, 2015 04:15 | July 15, 2015 09:45 | 1d 5h | 2,136 | 9,466 |
| 10 | July 3, 2015 12:15 | July 4, 2015 06:45 | 18h 30m | 2,074 | 11K |
Outage episodes by size in 2015: 81 reached 100+ customers, 25 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 Calhoun County reported on EIA Form 861 for 2015, 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 |
|---|---|---|---|---|---|
| Consumers Energy Co - (MI) | 2015 | 7.3 hrs | 1.18 | 3.0 hrs | 0.98 |
| City of Marshall - (MI) | - | - | - | - | - |
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 2015; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 92,794 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. Calhoun County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Calhoun County, MI annual power outage report, 2015, 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/2015/michigan/calhoun-county