County annual report · FIPS 26103
2021 Marquette County, MI Power Outage Report
In 2021, customers in Marquette County, MI went without power for an average of 2.4 hours, a total of 110K customer-hours (Michigan average 26.6 hours). That ranks 82nd worst of 83 Michigan counties and 2060th 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 Marquette 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 06:15 | December 19, 2021 02:15 | 2d 20h | 4,021 | 64K |
| 2 | August 10, 2021 19:45 | August 11, 2021 15:30 | 19h 45m | 1,660 | 11K |
| 3 | August 29, 2021 08:15 | August 30, 2021 03:30 | 19h 15m | 1,434 | 5,030 |
| 4 | November 21, 2021 19:30 | November 22, 2021 05:00 | 9h 30m | 1,348 | 2,984 |
| 5 | November 16, 2021 20:45 | November 17, 2021 01:00 | 4h 15m | 1,325 | 2,003 |
| 6 | November 11, 2021 20:15 | November 11, 2021 23:30 | 3h 15m | 1,117 | 1,463 |
| 7 | June 8, 2021 19:45 | June 9, 2021 02:00 | 6h 15m | 693 | 1,002 |
| 8 | January 3, 2021 19:15 | January 4, 2021 00:30 | 5h 15m | 533 | 2,666 |
| 9 | August 8, 2021 17:00 | August 8, 2021 21:00 | 4h | 510 | 1,444 |
| 10 | September 20, 2021 21:45 | September 20, 2021 23:45 | 2h | 466 | 816 |
Outage episodes by size in 2021: 29 reached 100+ customers, 6 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 Marquette 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 |
|---|---|---|---|---|---|
| Upper Peninsula Power Company | 2021 | 4.6 hrs | 1.48 | 2.5 hrs | 1.16 |
| Upper Michigan Energy Resources Corp. | 2021 | 13.0 hrs | 2.15 | 4.0 hrs | 1.50 |
| Alger-Delta Coop Electric Assn | 2021 | 3.2 hrs | 1.01 | 55 min | 0.99 |
| City of Marquette - (MI) | 2021 | 42 min | 0.52 | 13 min | 0.14 |
| 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 95% of Michigan's customers in 2021; 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, 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/marquette-county