County annual report · FIPS 26007
2021 Alpena County, MI Power Outage Report
In 2021, customers in Alpena County, MI went without power for an average of 4.4 hours, a total of 80K customer-hours (Michigan average 26.6 hours). That ranks 75th worst of 83 Michigan counties and 1462nd 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 Alpena 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 10:00 | December 21, 2021 19:45 | 5d 9h | 1,345 | 47K |
| 2 | August 11, 2021 23:15 | August 13, 2021 17:45 | 1d 18h | 894 | 7,975 |
| 3 | March 11, 2021 14:00 | March 13, 2021 01:15 | 1d 11h | 782 | 5,432 |
| 4 | November 21, 2021 23:30 | November 22, 2021 05:15 | 5h 45m | 682 | 2,917 |
| 5 | August 29, 2021 19:45 | August 31, 2021 17:30 | 1d 21h | 658 | 5,499 |
| 6 | September 22, 2021 12:30 | September 22, 2021 13:15 | 45m | 440 | 330 |
| 7 | March 23, 2021 15:00 | March 23, 2021 15:30 | 30m | 410 | 104 |
| 8 | November 23, 2021 20:15 | November 24, 2021 00:15 | 4h | 393 | 1,501 |
| 9 | July 6, 2021 11:00 | July 6, 2021 13:15 | 2h 15m | 277 | 623 |
| 10 | September 12, 2021 20:45 | September 12, 2021 22:15 | 1h 30m | 272 | 408 |
Outage episodes by size in 2021: 16 reached 100+ customers, 1 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 Alpena 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 |
|---|---|---|---|---|---|
| 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 ÷ 18,236 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. Alpena County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Alpena 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/alpena-county