County annual report · FIPS 26085
2021 Lake County, MI Power Outage Report
In 2021, customers in Lake County, MI went without power for an average of 54.9 hours, a total of 506K customer-hours (Michigan average 26.6 hours). That ranks 12th worst of 83 Michigan counties and 159th 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 Lake 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 11, 2021 02:45 | August 17, 2021 01:00 | 5d 22h | 6,444 | 187K |
| 2 | September 7, 2021 16:30 | September 12, 2021 02:45 | 4d 10h | 6,282 | 155K |
| 3 | December 16, 2021 01:15 | December 19, 2021 12:45 | 3d 11h | 3,382 | 91K |
| 4 | June 18, 2021 02:15 | June 18, 2021 16:45 | 14h 30m | 2,046 | 15K |
| 5 | December 11, 2021 13:00 | December 13, 2021 00:00 | 1d 11h | 1,710 | 8,316 |
| 6 | August 28, 2021 00:00 | August 29, 2021 00:30 | 1d | 1,032 | 11K |
| 7 | November 21, 2021 22:15 | November 22, 2021 15:30 | 17h 15m | 1,024 | 2,581 |
| 8 | September 14, 2021 14:00 | September 14, 2021 22:45 | 8h 45m | 653 | 923 |
| 9 | December 29, 2021 01:45 | December 29, 2021 04:15 | 2h 30m | 621 | 1,340 |
| 10 | November 12, 2021 02:45 | November 12, 2021 06:45 | 4h | 619 | 939 |
Outage episodes by size in 2021: 55 reached 100+ customers, 7 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 Lake 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 |
| Great Lakes Energy Coop | 2021 | 20.4 hrs | 3.25 | 3.4 hrs | 1.71 |
| Wolverine Power Supply Coop | - | - | - | - | - |
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 ÷ 9,226 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. Lake County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Lake 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/lake-county