County annual report · FIPS 26133
2021 Osceola County, MI Power Outage Report
In 2021, customers in Osceola County, MI went without power for an average of 30.3 hours, a total of 553K customer-hours (Michigan average 26.6 hours). That ranks 30th worst of 83 Michigan counties and 294th of 2,974 nationally.
Compared with MI, the US and 2020
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Osceola County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 7, 2021 16:30 | September 10, 2021 23:15 | 3d 6h | 9,451 | 146K |
| 2 | December 16, 2021 01:45 | December 20, 2021 08:45 | 4d 7h | 6,719 | 176K |
| 3 | August 11, 2021 03:00 | August 15, 2021 21:30 | 4d 18h | 3,857 | 136K |
| 4 | August 1, 2021 02:30 | August 2, 2021 02:00 | 23h 30m | 2,362 | 15K |
| 5 | August 24, 2021 21:15 | August 26, 2021 13:00 | 1d 15h | 2,271 | 31K |
| 6 | December 11, 2021 14:00 | December 13, 2021 16:30 | 2d 2h | 1,597 | 13K |
| 7 | March 18, 2021 01:30 | March 18, 2021 03:45 | 2h 15m | 956 | 723 |
| 8 | March 1, 2021 12:15 | March 1, 2021 22:15 | 10h | 916 | 4,866 |
| 9 | May 11, 2021 13:45 | May 11, 2021 14:45 | 1h | 901 | 676 |
| 10 | May 3, 2021 16:15 | May 3, 2021 21:15 | 5h | 710 | 846 |
Outage episodes by size in 2021: 44 reached 100+ customers, 6 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 Osceola County reported on EIA Form 861 for 2021, 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) | 2021 | 15.2 hrs | 1.60 | 3.8 hrs | 1.05 |
| Great Lakes Energy Coop | 2021 | 20.4 hrs | 3.25 | 3.4 hrs | 1.71 |
| Tri-County Electric Coop (MI) | 2021 | 6.3 hrs | 1.63 | 2.5 hrs | 1.12 |
| 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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 18,272 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. Osceola County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Osceola County, MI annual power outage report, 2021, 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/2021/michigan/osceola-county