County annual report · FIPS 26073
2017 Isabella County, MI Power Outage Report
In 2017, customers in Isabella County, MI went without power for an average of 2.6 hours, a total of 94K customer-hours (Michigan average 6.0 hours). That ranks 68th worst of 80 Michigan counties and 1453rd of 2,786 nationally.
Compared with MI, the US and 2016
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Isabella County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 23, 2017 17:30 | May 23, 2017 19:30 | 2h | 2,063 | 2,973 |
| 2 | December 3, 2017 05:00 | December 3, 2017 08:00 | 3h | 1,520 | 4,560 |
| 3 | December 5, 2017 05:00 | December 7, 2017 05:45 | 2d | 1,411 | 17K |
| 4 | March 9, 2017 19:30 | March 10, 2017 16:30 | 21h | 978 | 17K |
| 5 | April 6, 2017 14:30 | April 11, 2017 04:45 | 4d 14h | 900 | 4,248 |
| 6 | June 23, 2017 02:30 | June 25, 2017 08:30 | 2d 6h | 885 | 11K |
| 7 | July 30, 2017 17:15 | July 30, 2017 19:30 | 2h 15m | 831 | 1,589 |
| 8 | October 7, 2017 18:30 | October 8, 2017 00:45 | 6h 15m | 812 | 3,265 |
| 9 | March 10, 2017 19:30 | March 12, 2017 06:00 | 1d 10h | 755 | 15K |
| 10 | March 13, 2017 16:30 | March 13, 2017 20:00 | 3h 30m | 700 | 1,150 |
Outage episodes by size in 2017: 31 reached 100+ customers, 3 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 2017, 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) | 2017 | 10.1 hrs | 1.31 | 2.7 hrs | 0.89 |
| DTE Electric Company | 2017 | 17.7 hrs | 1.39 | 3.3 hrs | 0.99 |
| Tri-County Electric Coop (MI) | 2017 | 3.9 hrs | 1.52 | 2.3 hrs | 1.34 |
| 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 2017; 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, 2017, 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/2017/michigan/isabella-county