County annual report · FIPS 26119
2021 Montmorency County, MI Power Outage Report
In 2021, customers in Montmorency County, MI went without power for an average of 38.7 hours, a total of 235K customer-hours (Michigan average 26.6 hours). That ranks 23rd worst of 83 Michigan counties and 226th 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 Montmorency 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 | August 11, 2021 17:15 | August 14, 2021 00:45 | 2d 7h | 3,842 | 46K |
| 2 | December 16, 2021 09:30 | December 22, 2021 23:30 | 6d 14h | 3,568 | 128K |
| 3 | March 11, 2021 13:15 | March 13, 2021 01:15 | 1d 12h | 1,886 | 8,666 |
| 4 | August 29, 2021 16:00 | August 31, 2021 16:30 | 2d | 1,836 | 12K |
| 5 | November 21, 2021 23:15 | November 22, 2021 20:30 | 21h 15m | 1,460 | 3,898 |
| 6 | June 21, 2021 16:30 | June 21, 2021 19:15 | 2h 45m | 1,426 | 3,201 |
| 7 | June 17, 2021 20:15 | June 17, 2021 22:30 | 2h 15m | 1,420 | 3,195 |
| 8 | July 14, 2021 13:15 | July 14, 2021 18:45 | 5h 30m | 1,110 | 1,524 |
| 9 | March 3, 2021 20:45 | March 3, 2021 21:45 | 1h | 1,109 | 869 |
| 10 | September 23, 2021 17:00 | September 23, 2021 19:00 | 2h | 1,108 | 1,109 |
Outage episodes by size in 2021: 33 reached 100+ customers, 11 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 Montmorency 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 | - | - | - | - | - |
| Alpena Power Co | - | - | - | - | - |
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 ÷ 6,073 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. Montmorency County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Montmorency 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/montmorency-county