County annual report · FIPS 26131
2020 Ontonagon County, MI Power Outage Report
In 2020, customers in Ontonagon County, MI went without power for an average of 9.4 hours, a total of 40K customer-hours (Michigan average 9.8 hours). That ranks 42nd worst of 83 Michigan counties and 833rd of 3,019 nationally.
Compared with MI, the US and 2019
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Ontonagon County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 19, 2020 04:15 | July 20, 2020 01:00 | 20h 45m | 4,600 | 16K |
| 2 | November 15, 2020 05:45 | November 15, 2020 09:15 | 3h 30m | 2,067 | 4,990 |
| 3 | December 9, 2020 01:30 | December 9, 2020 02:15 | 45m | 1,279 | 959 |
| 4 | March 12, 2020 21:30 | March 12, 2020 22:30 | 1h | 790 | 201 |
| 5 | July 14, 2020 22:15 | July 15, 2020 07:15 | 9h | 668 | 5,783 |
| 6 | May 5, 2020 07:45 | May 5, 2020 14:45 | 7h | 639 | 2,626 |
| 7 | December 14, 2020 18:00 | December 14, 2020 19:15 | 1h 15m | 637 | 767 |
| 8 | March 13, 2020 03:00 | March 13, 2020 06:45 | 3h 45m | 510 | 1,276 |
| 9 | September 3, 2020 13:00 | September 3, 2020 16:00 | 3h | 506 | 237 |
| 10 | October 21, 2020 03:00 | October 21, 2020 06:30 | 3h 30m | 435 | 981 |
Outage episodes by size in 2020: 18 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 2020, 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 | 2020 | 3.9 hrs | 1.63 | 2.8 hrs | 1.52 |
| Upper Peninsula Power Company | 2020 | 4.9 hrs | 2.30 | 3.4 hrs | 1.77 |
| Upper Michigan Energy Resources Corp. | 2020 | 4.2 hrs | 2.71 | 3.7 hrs | 2.56 |
| 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 95% of Michigan's customers in 2020; 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, 2020, 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/2020/michigan/ontonagon-county