County annual report · FIPS 26073
2023 Isabella County, MI Power Outage Report
In 2023, customers in Isabella County, MI went without power for an average of 2.7 hours, a total of 98K customer-hours (Michigan average 26.5 hours). That ranks 75th worst of 83 Michigan counties and 2052nd 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 Isabella 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 | June 11, 2023 17:00 | June 12, 2023 05:30 | 12h 30m | 3,695 | 16K |
| 2 | February 8, 2023 18:15 | February 8, 2023 22:45 | 4h 30m | 2,052 | 5,621 |
| 3 | October 3, 2023 14:00 | October 4, 2023 00:00 | 10h | 1,607 | 6,417 |
| 4 | October 29, 2023 01:30 | October 29, 2023 15:30 | 14h | 1,602 | 9,767 |
| 5 | March 25, 2023 12:45 | March 28, 2023 00:15 | 2d 11h | 1,515 | 16K |
| 6 | June 24, 2023 19:30 | June 26, 2023 06:30 | 1d 11h | 739 | 1,878 |
| 7 | July 26, 2023 18:00 | July 27, 2023 09:45 | 15h 45m | 656 | 1,776 |
| 8 | November 13, 2023 04:30 | November 13, 2023 08:15 | 3h 45m | 632 | 1,266 |
| 9 | February 15, 2023 16:00 | February 16, 2023 04:00 | 12h | 625 | 2,596 |
| 10 | June 30, 2023 14:45 | June 30, 2023 18:30 | 3h 45m | 538 | 1,459 |
Outage episodes by size in 2023: 48 reached 100+ customers, 5 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 Isabella 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 |
| DTE Electric Company | 2023 | 25.7 hrs | 1.72 | 2.6 hrs | 0.85 |
| Tri-County Electric Coop (MI) | 2023 | 15.2 hrs | 1.06 | 1.9 hrs | 0.72 |
| Wolverine Power Supply Coop | - | - | - | - | - |
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 ÷ 36,507 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. Isabella County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Isabella 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/isabella-county