County annual report · FIPS 26025
2023 Calhoun County, MI Power Outage Report
In 2023, customers in Calhoun County, MI went without power for an average of 17.7 hours, a total of 1.6M customer-hours (Michigan average 26.5 hours). That ranks 21st worst of 83 Michigan counties and 480th of 2,977 nationally.
Compared with MI, the US and 2022
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Calhoun County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 23, 2023 03:45 | March 3, 2023 01:00 | 7d 21h | 25,676 | 1.3M |
| 2 | February 22, 2023 18:30 | February 23, 2023 03:00 | 8h 30m | 19,158 | 33K |
| 3 | May 14, 2023 05:15 | May 14, 2023 08:45 | 3h 30m | 4,123 | 14K |
| 4 | August 10, 2023 13:45 | August 11, 2023 02:45 | 13h | 4,100 | 19K |
| 5 | January 19, 2023 03:30 | January 19, 2023 16:00 | 12h 30m | 3,979 | 15K |
| 6 | July 26, 2023 17:30 | July 30, 2023 03:00 | 3d 9h | 3,438 | 63K |
| 7 | September 26, 2023 13:15 | September 26, 2023 19:15 | 6h | 3,257 | 5,145 |
| 8 | May 7, 2023 11:00 | May 7, 2023 20:45 | 9h 45m | 2,391 | 3,319 |
| 9 | May 8, 2023 17:15 | May 8, 2023 18:45 | 1h 30m | 2,391 | 3,587 |
| 10 | January 23, 2023 06:30 | January 23, 2023 08:00 | 1h 30m | 2,390 | 3,585 |
Outage episodes by size in 2023: 93 reached 100+ customers, 20 reached 1,000+ customers, 2 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 2023, 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) | 2023 | 15.2 hrs | 1.37 | 2.9 hrs | 0.96 |
| 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 2023; 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, 2023, 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/2023/michigan/calhoun-county