County annual report · FIPS 26025
2017 Calhoun County, MI Power Outage Report
In 2017, customers in Calhoun County, MI went without power for an average of 5.0 hours, a total of 460K customer-hours (Michigan average 6.0 hours). That ranks 41st worst of 80 Michigan counties and 969th 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 Calhoun 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 | March 9, 2017 19:30 | March 10, 2017 16:30 | 21h | 8,967 | 160K |
| 2 | July 7, 2017 11:30 | July 9, 2017 05:30 | 1d 18h | 6,631 | 21K |
| 3 | March 10, 2017 19:30 | March 12, 2017 06:00 | 1d 10h | 6,079 | 121K |
| 4 | April 6, 2017 07:30 | April 7, 2017 23:45 | 1d 16h | 3,342 | 25K |
| 5 | March 12, 2017 07:00 | March 13, 2017 23:30 | 1d 16h | 2,256 | 36K |
| 6 | July 3, 2017 10:30 | July 3, 2017 13:30 | 3h | 1,790 | 2,836 |
| 7 | October 15, 2017 06:00 | October 16, 2017 00:15 | 18h 15m | 1,776 | 3,093 |
| 8 | July 25, 2017 11:15 | July 25, 2017 13:15 | 2h | 1,716 | 1,395 |
| 9 | May 18, 2017 13:30 | May 19, 2017 02:45 | 13h 15m | 1,631 | 9,510 |
| 10 | July 2, 2017 19:00 | July 2, 2017 22:45 | 3h 45m | 1,627 | 3,048 |
Outage episodes by size in 2017: 75 reached 100+ customers, 17 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 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 |
|---|---|---|---|---|---|
| Consumers Energy Co - (MI) | 2017 | 10.1 hrs | 1.31 | 2.7 hrs | 0.89 |
| 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 2017; 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, 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/calhoun-county