County annual report · FIPS 26073
2020 Isabella County, MI Power Outage Report
In 2020, customers in Isabella County, MI went without power for an average of 2.7 hours, a total of 99K customer-hours (Michigan average 9.8 hours). That ranks 78th worst of 83 Michigan counties and 1976th 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 Isabella 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 3, 2020 04:45 | June 5, 2020 03:15 | 1d 22h | 1,438 | 6,992 |
| 2 | June 10, 2020 17:30 | June 13, 2020 21:30 | 3d 4h | 1,370 | 30K |
| 3 | September 3, 2020 17:15 | September 4, 2020 15:30 | 22h 15m | 1,027 | 4,315 |
| 4 | July 7, 2020 12:30 | July 7, 2020 19:15 | 6h 45m | 931 | 611 |
| 5 | November 2, 2020 16:30 | November 2, 2020 20:30 | 4h | 911 | 575 |
| 6 | May 7, 2020 03:00 | May 7, 2020 10:15 | 7h 15m | 904 | 3,779 |
| 7 | July 11, 2020 22:45 | July 12, 2020 02:30 | 3h 45m | 622 | 1,244 |
| 8 | December 12, 2020 08:45 | December 14, 2020 02:00 | 1d 17h | 551 | 7,870 |
| 9 | July 19, 2020 12:30 | July 20, 2020 01:15 | 12h 45m | 473 | 4,928 |
| 10 | November 15, 2020 15:45 | November 17, 2020 01:00 | 1d 9h | 466 | 2,745 |
Outage episodes by size in 2020: 49 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 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 |
| DTE Electric Company | 2020 | 5.9 hrs | 1.29 | 2.4 hrs | 1.01 |
| Tri-County Electric Coop (MI) | 2020 | 3.8 hrs | 1.61 | 2.6 hrs | 1.42 |
| 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 95% of Michigan's customers in 2020; 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, 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/isabella-county