County annual report · FIPS 26131
2015 Ontonagon County, MI Power Outage Report
In 2015, customers in Ontonagon County, MI went without power for an average of 1.7 hours, a total of 7,190 customer-hours (Michigan average 6.8 hours). That ranks 72nd worst of 80 Michigan counties and 1377th of 2,484 nationally.
Compared with MI, the US
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Ontonagon County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 18, 2015 07:45 | October 18, 2015 11:00 | 3h 15m | 1,268 | 2,537 |
| 2 | December 2, 2015 22:00 | December 2, 2015 23:45 | 1h 45m | 460 | 575 |
| 3 | December 24, 2015 08:45 | December 24, 2015 17:15 | 8h 30m | 372 | 1,468 |
| 4 | November 19, 2015 05:30 | November 19, 2015 07:15 | 1h 45m | 213 | 373 |
| 5 | October 23, 2015 18:45 | October 23, 2015 21:30 | 2h 45m | 121 | 326 |
| 6 | December 23, 2015 15:00 | December 23, 2015 16:45 | 1h 45m | 87 | 131 |
| 7 | May 18, 2015 13:00 | May 18, 2015 13:45 | 45m | 84 | 42 |
| 8 | May 18, 2015 16:15 | May 18, 2015 16:30 | 15m | 84 | 21 |
| 9 | November 19, 2015 11:45 | November 19, 2015 12:30 | 45m | 83 | 42 |
| 10 | September 25, 2015 12:15 | September 25, 2015 15:00 | 2h 45m | 75 | 148 |
Outage episodes by size in 2015: 5 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 Ontonagon County reported on EIA Form 861 for 2015, 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 | 2015 | 2.4 hrs | 0.90 | 2.0 hrs | 0.82 |
| Upper Peninsula Power Company | 2015 | 2.7 hrs | 1.30 | 2.0 hrs | 1.10 |
| Upper Michigan Energy Resources Corp. | - | - | - | - | - |
| 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 2015; 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, 2015, 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/2015/michigan/ontonagon-county