County annual report · FIPS 26025
2018 Calhoun County, MI Power Outage Report
In 2018, customers in Calhoun County, MI went without power for an average of 3.3 hours, a total of 307K customer-hours (Michigan average 10.0 hours). That ranks 61st worst of 80 Michigan counties and 1407th of 2,798 nationally.
Compared with MI, the US and 2017
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Calhoun County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 15, 2018 08:30 | April 16, 2018 15:15 | 1d 6h | 5,572 | 84K |
| 2 | November 26, 2018 08:30 | November 27, 2018 21:00 | 1d 12h | 4,009 | 38K |
| 3 | October 20, 2018 16:00 | October 22, 2018 22:45 | 2d 6h | 3,185 | 55K |
| 4 | May 4, 2018 13:15 | May 5, 2018 19:15 | 1d 6h | 2,376 | 5,771 |
| 5 | May 12, 2018 12:30 | May 12, 2018 19:15 | 6h 45m | 2,053 | 3,576 |
| 6 | August 25, 2018 11:00 | August 25, 2018 19:30 | 8h 30m | 2,015 | 1,728 |
| 7 | May 25, 2018 21:00 | May 26, 2018 04:30 | 7h 30m | 1,994 | 3,024 |
| 8 | May 15, 2018 02:00 | May 15, 2018 23:15 | 21h 15m | 1,580 | 5,075 |
| 9 | March 6, 2018 00:45 | March 6, 2018 01:00 | 15m | 1,547 | 387 |
| 10 | June 20, 2018 09:00 | June 20, 2018 19:15 | 10h 15m | 1,472 | 3,375 |
Outage episodes by size in 2018: 99 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 2018, 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) | 2018 | 6.8 hrs | 1.29 | 3.3 hrs | 1.02 |
| 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 91% of Michigan's customers in 2018; 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, 2018, 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/2018/michigan/calhoun-county