County annual report · FIPS 26003
2021 Alger County, MI Power Outage Report
In 2021, customers in Alger County, MI went without power for an average of 3.3 hours, a total of 15K customer-hours (Michigan average 26.6 hours). That ranks 80th worst of 83 Michigan counties and 1739th 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 Alger 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 | March 29, 2021 19:15 | March 30, 2021 05:15 | 10h | 972 | 4,198 |
| 2 | July 18, 2021 22:00 | July 18, 2021 23:15 | 1h 15m | 811 | 835 |
| 3 | July 19, 2021 15:30 | July 19, 2021 17:00 | 1h 30m | 811 | 1,217 |
| 4 | October 1, 2021 14:00 | October 1, 2021 15:30 | 1h 30m | 632 | 947 |
| 5 | November 2, 2021 08:45 | November 2, 2021 19:45 | 11h | 618 | 1,458 |
| 6 | February 28, 2021 23:00 | March 1, 2021 01:15 | 2h 15m | 561 | 1,007 |
| 7 | September 12, 2021 22:15 | September 12, 2021 23:45 | 1h 30m | 551 | 705 |
| 8 | December 1, 2021 21:15 | December 2, 2021 00:30 | 3h 15m | 429 | 224 |
| 9 | September 21, 2021 00:00 | September 21, 2021 03:00 | 3h | 288 | 792 |
| 10 | July 24, 2021 02:45 | July 24, 2021 04:15 | 1h 30m | 245 | 271 |
Outage episodes by size in 2021: 14 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 Alger 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 |
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 ÷ 4,553 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. Alger County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Alger 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/alger-county