County annual report · FIPS 26009
2021 Antrim County, MI Power Outage Report
In 2021, customers in Antrim County, MI went without power for an average of 43.6 hours, a total of 682K customer-hours (Michigan average 26.6 hours). That ranks 18th worst of 83 Michigan counties and 206th 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 Antrim 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 06:30 | December 21, 2021 23:15 | 5d 16h | 14,851 | 498K |
| 2 | April 8, 2021 10:00 | April 9, 2021 16:30 | 1d 6h | 7,357 | 37K |
| 3 | August 11, 2021 01:15 | August 15, 2021 03:00 | 4d 1h | 3,225 | 25K |
| 4 | June 21, 2021 14:00 | June 22, 2021 00:30 | 10h 30m | 2,793 | 5,971 |
| 5 | June 24, 2021 15:00 | June 24, 2021 23:15 | 8h 15m | 2,442 | 9,879 |
| 6 | August 28, 2021 14:45 | August 31, 2021 05:15 | 2d 14h | 1,654 | 9,074 |
| 7 | June 5, 2021 12:45 | June 5, 2021 14:00 | 1h 15m | 1,369 | 699 |
| 8 | November 21, 2021 22:45 | November 23, 2021 10:15 | 1d 11h | 1,155 | 13K |
| 9 | December 11, 2021 18:30 | December 12, 2021 15:30 | 21h | 1,101 | 3,525 |
| 10 | May 21, 2021 14:15 | May 21, 2021 18:45 | 4h 30m | 1,082 | 3,570 |
Outage episodes by size in 2021: 69 reached 100+ customers, 11 reached 1,000+ customers, 1 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 Antrim 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 |
| 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 ÷ 15,641 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. Antrim County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Antrim 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/antrim-county