County annual report · FIPS 26137
2021 Otsego County, MI Power Outage Report
In 2021, customers in Otsego County, MI went without power for an average of 12.8 hours, a total of 246K customer-hours (Michigan average 26.6 hours). That ranks 52nd worst of 83 Michigan counties and 643rd 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 Otsego 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 | December 16, 2021 04:15 | December 20, 2021 22:45 | 4d 18h | 5,722 | 144K |
| 2 | July 5, 2021 22:30 | July 7, 2021 01:45 | 1d 3h | 2,664 | 10K |
| 3 | November 21, 2021 22:30 | November 22, 2021 16:30 | 18h | 2,090 | 13K |
| 4 | December 22, 2021 11:45 | December 22, 2021 23:00 | 11h 15m | 1,639 | 14K |
| 5 | July 4, 2021 12:15 | July 5, 2021 04:30 | 16h 15m | 1,527 | 4,320 |
| 6 | March 11, 2021 12:45 | March 12, 2021 04:30 | 15h 45m | 1,166 | 6,157 |
| 7 | January 12, 2021 19:00 | January 12, 2021 20:30 | 1h 30m | 986 | 697 |
| 8 | December 11, 2021 14:15 | December 12, 2021 18:00 | 1d 3h | 933 | 1,936 |
| 9 | August 29, 2021 17:00 | August 30, 2021 22:00 | 1d 5h | 888 | 8,394 |
| 10 | December 14, 2021 20:45 | December 14, 2021 22:00 | 1h 15m | 843 | 422 |
Outage episodes by size in 2021: 49 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 Otsego 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 |
| Presque Isle Elec & Gas Coop | 2015 | 22.8 hrs | 2.30 | 3.8 hrs | 1.32 |
| 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 ÷ 19,174 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. Otsego County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Otsego 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/otsego-county