County annual report · FIPS 26103
2025 Marquette County, MI Power Outage Report
In 2025, customers in Marquette County, MI went without power for an average of 13.1 hours, a total of 593K customer-hours (Michigan average 12.9 hours). That ranks 45th worst of 83 Michigan counties and 591st 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 Marquette 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 02:45 | January 1, 2026 00:00 | 2d 21h | 12,919 | 371K |
| 2 | November 26, 2025 12:00 | November 29, 2025 20:45 | 3d 8h | 6,461 | 68K |
| 3 | July 21, 2025 17:30 | July 21, 2025 17:45 | 15m | 4,966 | 1,242 |
| 4 | October 29, 2025 18:15 | November 4, 2025 14:00 | 5d 19h | 2,978 | 23K |
| 5 | October 16, 2025 14:00 | October 16, 2025 16:45 | 2h 45m | 2,839 | 3,896 |
| 6 | December 12, 2025 15:15 | December 12, 2025 17:30 | 2h 15m | 2,261 | 3,900 |
| 7 | September 15, 2025 11:45 | September 15, 2025 15:15 | 3h 30m | 2,245 | 3,588 |
| 8 | September 5, 2025 15:45 | September 8, 2025 19:45 | 3d 4h | 2,239 | 1,718 |
| 9 | February 21, 2025 01:45 | February 21, 2025 03:00 | 1h 15m | 1,867 | 2,334 |
| 10 | September 29, 2025 19:45 | October 1, 2025 13:15 | 1d 17h | 1,647 | 474 |
Outage episodes by size in 2025: 49 reached 100+ customers, 22 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 Marquette 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 |
| City of Marquette - (MI) | 2024 | 3.7 hrs | 2.38 | 1.7 hrs | 1.45 |
| City of Negaunee | - | - | - | - | - |
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 ÷ 45,262 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. Marquette County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Marquette 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/marquette-county