County annual report · FIPS 26073
2019 Isabella County, MI Power Outage Report
In 2019, customers in Isabella County, MI went without power for an average of 8.2 hours, a total of 299K customer-hours (Michigan average 12.7 hours). That ranks 47th worst of 83 Michigan counties and 687th of 2,945 nationally.
Compared with MI, the US and 2018
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Isabella County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 20, 2019 05:30 | July 23, 2019 00:00 | 2d 18h | 7,611 | 77K |
| 2 | August 6, 2019 02:15 | August 6, 2019 15:45 | 13h 30m | 5,933 | 30K |
| 3 | June 1, 2019 03:15 | June 2, 2019 07:30 | 1d 4h | 5,073 | 30K |
| 4 | August 15, 2019 07:30 | August 15, 2019 16:00 | 8h 30m | 2,966 | 5,005 |
| 5 | December 1, 2019 07:00 | December 4, 2019 01:45 | 2d 18h | 2,613 | 53K |
| 6 | March 4, 2019 22:15 | March 5, 2019 00:30 | 2h 15m | 2,016 | 4,105 |
| 7 | December 30, 2019 14:45 | December 31, 2019 00:15 | 9h 30m | 1,581 | 5,260 |
| 8 | September 13, 2019 15:00 | September 14, 2019 11:00 | 20h | 1,525 | 11K |
| 9 | February 7, 2019 17:15 | February 9, 2019 22:30 | 2d 5h | 1,311 | 27K |
| 10 | December 6, 2019 02:15 | December 6, 2019 04:45 | 2h 30m | 1,252 | 1,368 |
Outage episodes by size in 2019: 56 reached 100+ customers, 10 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 2019, 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 |
| DTE Electric Company | 2018 | 8.1 hrs | 1.36 | 3.0 hrs | 1.04 |
| Tri-County Electric Coop (MI) | 2018 | 5.0 hrs | 1.98 | 4.2 hrs | 1.89 |
| 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 96% of Michigan's customers in 2019; 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, 2019, 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/2019/michigan/isabella-county