County annual report · FIPS 26011
2021 Arenac County, MI Power Outage Report
In 2021, customers in Arenac County, MI went without power for an average of 52.6 hours, a total of 519K customer-hours (Michigan average 26.6 hours). That ranks 14th worst of 83 Michigan counties and 170th 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 Arenac 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 10, 2021 14:15 | August 11, 2021 22:30 | 1d 8h | 7,295 | 120K |
| 2 | August 12, 2021 15:00 | August 17, 2021 02:00 | 4d 11h | 7,139 | 160K |
| 3 | March 11, 2021 15:00 | March 13, 2021 00:15 | 1d 9h | 3,036 | 25K |
| 4 | April 1, 2021 01:15 | April 1, 2021 18:15 | 17h | 2,352 | 22K |
| 5 | September 23, 2021 04:15 | September 24, 2021 19:00 | 1d 14h | 2,331 | 20K |
| 6 | July 10, 2021 07:45 | July 10, 2021 08:30 | 45m | 1,840 | 688 |
| 7 | August 28, 2021 18:00 | August 31, 2021 05:30 | 2d 11h | 1,654 | 37K |
| 8 | August 8, 2021 13:15 | August 8, 2021 16:15 | 3h | 1,606 | 4,025 |
| 9 | December 11, 2021 14:45 | December 14, 2021 05:45 | 2d 15h | 1,504 | 48K |
| 10 | September 7, 2021 18:30 | September 9, 2021 02:00 | 1d 7h | 1,472 | 7,695 |
Outage episodes by size in 2021: 42 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 Arenac 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 |
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 ÷ 9,864 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. Arenac County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Arenac 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/arenac-county