County annual report · FIPS 26003
2025 Alger County, MI Power Outage Report
In 2025, customers in Alger County, MI went without power for an average of 14.9 hours, a total of 68K customer-hours (Michigan average 12.9 hours). That ranks 41st worst of 83 Michigan counties and 510th of 3,000 nationally.
Compared with MI, the US and 2024
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Alger County, 2025
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 29, 2025 02:00 | January 1, 2026 00:00 | 2d 22h | 1,787 | 38K |
| 2 | March 5, 2025 06:00 | March 5, 2025 09:45 | 3h 45m | 802 | 3,006 |
| 3 | November 26, 2025 22:15 | November 27, 2025 21:00 | 22h 45m | 797 | 8,612 |
| 4 | June 21, 2025 13:00 | June 22, 2025 01:15 | 12h 15m | 788 | 2,082 |
| 5 | August 9, 2025 09:00 | August 9, 2025 22:00 | 13h | 749 | 4,806 |
| 6 | August 20, 2025 13:30 | August 20, 2025 18:15 | 4h 45m | 730 | 2,730 |
| 7 | April 28, 2025 22:15 | April 30, 2025 20:15 | 1d 22h | 719 | 3,255 |
| 8 | January 17, 2025 18:15 | January 17, 2025 19:00 | 45m | 594 | 297 |
| 9 | October 12, 2025 18:00 | October 12, 2025 21:30 | 3h 30m | 300 | 489 |
| 10 | May 16, 2025 18:15 | May 16, 2025 20:00 | 1h 45m | 297 | 152 |
Outage episodes by size in 2025: 12 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 Alger County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| Upper Peninsula Power Company | 2024 | 6.7 hrs | 1.65 | 3.1 hrs | 1.26 |
| Upper Michigan Energy Resources Corp. | 2024 | 18.0 hrs | 1.71 | 3.6 hrs | 1.02 |
| Alger-Delta Coop Electric Assn | 2024 | 15.8 hrs | 2.10 | 3.8 hrs | 1.23 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Michigan's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,553 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. Alger County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Alger County, MI annual power outage report, 2025, 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/2025/michigan/alger-county