County annual report · FIPS 26083
2021 Keweenaw County, MI Power Outage Report
In 2021, customers in Keweenaw County, MI went without power for an average of 16.4 hours, a total of 22K customer-hours (Michigan average 26.6 hours). That ranks 48th worst of 83 Michigan counties and 519th 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 Keweenaw 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 | November 11, 2021 12:00 | November 11, 2021 21:45 | 9h 45m | 864 | 1,631 |
| 2 | December 16, 2021 14:00 | December 18, 2021 06:00 | 1d 16h | 812 | 8,175 |
| 3 | November 17, 2021 01:00 | November 17, 2021 05:45 | 4h 45m | 547 | 1,651 |
| 4 | June 21, 2021 05:00 | June 21, 2021 16:00 | 11h | 538 | 4,874 |
| 5 | December 6, 2021 12:00 | December 6, 2021 15:45 | 3h 45m | 414 | 1,347 |
| 6 | December 15, 2021 01:30 | December 15, 2021 05:30 | 4h | 414 | 1,288 |
| 7 | September 23, 2021 05:45 | September 23, 2021 11:00 | 5h 15m | 411 | 2,056 |
| 8 | August 13, 2021 03:00 | August 13, 2021 05:15 | 2h 15m | 171 | 343 |
| 9 | November 21, 2021 19:30 | November 22, 2021 00:45 | 5h 15m | 108 | 311 |
| 10 | October 29, 2021 01:15 | October 29, 2021 03:00 | 1h 45m | 83 | 145 |
Outage episodes by size in 2021: 9 reached 100+ customers, 0 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 Keweenaw 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 |
| 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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,356 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. Keweenaw County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Keweenaw 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/keweenaw-county