County annual report · FIPS 26025
2020 Calhoun County, MI Power Outage Report
In 2020, customers in Calhoun County, MI went without power for an average of 23.7 hours, a total of 2.2M customer-hours (Michigan average 9.8 hours). That ranks 14th worst of 83 Michigan counties and 362nd of 3,019 nationally.
Compared with MI, the US and 2019
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Calhoun County, 2020
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 9, 2020 17:45 | June 16, 2020 10:45 | 6d 17h | 30,725 | 1.9M |
| 2 | August 28, 2020 17:00 | August 30, 2020 05:00 | 1d 12h | 6,410 | 28K |
| 3 | March 26, 2020 23:15 | March 27, 2020 07:45 | 8h 30m | 3,909 | 14K |
| 4 | October 18, 2020 04:00 | October 18, 2020 11:00 | 7h | 3,896 | 5,224 |
| 5 | November 15, 2020 07:30 | November 18, 2020 02:00 | 2d 18h | 2,606 | 52K |
| 6 | August 10, 2020 23:45 | August 12, 2020 06:00 | 1d 6h | 2,519 | 21K |
| 7 | October 28, 2020 17:30 | October 29, 2020 01:15 | 7h 45m | 2,360 | 12K |
| 8 | November 13, 2020 06:15 | November 13, 2020 08:15 | 2h | 2,351 | 4,114 |
| 9 | December 13, 2020 10:15 | December 13, 2020 19:15 | 9h | 1,714 | 15K |
| 10 | July 16, 2020 06:45 | July 17, 2020 02:45 | 20h | 1,648 | 11K |
Outage episodes by size in 2020: 91 reached 100+ customers, 16 reached 1,000+ customers, 1 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 2020, 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) | 2020 | 8.5 hrs | 1.35 | 3.2 hrs | 1.03 |
| 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 95% of Michigan's customers in 2020; 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, 2020, 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/2020/michigan/calhoun-county