County annual report · FIPS 26005
2021 Allegan County, MI Power Outage Report
In 2021, customers in Allegan County, MI went without power for an average of 15.1 hours, a total of 1.3M customer-hours (Michigan average 26.6 hours). That ranks 50th worst of 83 Michigan counties and 565th 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 Allegan 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 | August 10, 2021 18:45 | August 17, 2021 03:45 | 6d 9h | 15,331 | 745K |
| 2 | April 8, 2021 21:00 | April 9, 2021 04:15 | 7h 15m | 7,913 | 33K |
| 3 | October 12, 2021 00:00 | October 13, 2021 02:45 | 1d 2h | 7,534 | 83K |
| 4 | December 11, 2021 00:00 | December 14, 2021 01:45 | 3d 1h | 7,495 | 128K |
| 5 | January 2, 2021 17:00 | January 2, 2021 23:30 | 6h 30m | 5,775 | 19K |
| 6 | November 13, 2021 00:00 | November 14, 2021 18:30 | 1d 18h | 4,639 | 58K |
| 7 | July 29, 2021 07:45 | July 30, 2021 07:00 | 23h 15m | 3,462 | 18K |
| 8 | August 29, 2021 19:30 | August 30, 2021 05:45 | 10h 15m | 2,837 | 5,245 |
| 9 | November 21, 2021 22:00 | November 23, 2021 08:45 | 1d 10h | 2,563 | 22K |
| 10 | September 23, 2021 03:45 | September 23, 2021 22:30 | 18h 45m | 2,474 | 11K |
Outage episodes by size in 2021: 90 reached 100+ customers, 19 reached 1,000+ customers, 1 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 Allegan 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 |
|---|---|---|---|---|---|
| Consumers Energy Co - (MI) | 2021 | 15.2 hrs | 1.60 | 3.8 hrs | 1.05 |
| Indiana Michigan Power Co | 2021 | 11.2 hrs | 1.57 | 3.8 hrs | 1.09 |
| Great Lakes Energy Coop | 2021 | 20.4 hrs | 3.25 | 3.4 hrs | 1.71 |
| City of Holland | 2021 | 31 min | 0.49 | 31 min | 0.49 |
| Wolverine Power Supply Coop | - | - | - | - | - |
| City of South Haven - (MI) | - | - | - | - | - |
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 ÷ 86,725 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. Allegan County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Allegan 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/allegan-county