County annual report · FIPS 26131
2024 Ontonagon County, MI Power Outage Report
In 2024, customers in Ontonagon County, MI went without power for an average of 4.3 hours, a total of 18K customer-hours (Michigan average 8.5 hours). That ranks 68th worst of 83 Michigan counties and 1759th of 2,990 nationally.
Compared with MI, the US and 2023
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Ontonagon County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 9, 2024 15:00 | February 10, 2024 01:15 | 10h 15m | 1,294 | 8,745 |
| 2 | April 3, 2024 18:00 | April 3, 2024 20:30 | 2h 30m | 1,272 | 799 |
| 3 | July 17, 2024 13:00 | July 17, 2024 13:30 | 30m | 1,271 | 320 |
| 4 | April 25, 2024 13:45 | April 25, 2024 16:30 | 2h 45m | 661 | 1,818 |
| 5 | November 11, 2024 12:15 | November 11, 2024 22:45 | 10h 30m | 558 | 1,666 |
| 6 | June 4, 2024 22:30 | June 5, 2024 00:45 | 2h 15m | 440 | 485 |
| 7 | March 25, 2024 10:30 | March 25, 2024 12:45 | 2h 15m | 266 | 177 |
| 8 | September 20, 2024 12:30 | September 20, 2024 14:15 | 1h 45m | 223 | 390 |
| 9 | October 6, 2024 08:00 | October 6, 2024 19:45 | 11h 45m | 179 | 1,340 |
| 10 | June 4, 2024 01:30 | June 4, 2024 02:45 | 1h 15m | 140 | 175 |
Outage episodes by size in 2024: 12 reached 100+ customers, 3 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 Ontonagon County reported on EIA Form 861 for 2024, 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 |
|---|---|---|---|---|---|
| Northern States Power Co | 2024 | 3.1 hrs | 1.06 | 2.0 hrs | 0.81 |
| 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 |
| Ontonagon County R E A | - | - | - | - | - |
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 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,246 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. Ontonagon County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Ontonagon County, MI annual power outage report, 2024, 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/2024/michigan/ontonagon-county