County annual report · FIPS 26091
2021 Lenawee County, MI Power Outage Report
In 2021, customers in Lenawee County, MI went without power for an average of 23.0 hours, a total of 790K customer-hours (Michigan average 26.6 hours). That ranks 39th worst of 83 Michigan counties and 370th 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 Lenawee 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 08:45 | August 17, 2021 21:00 | 6d 12h | 8,137 | 461K |
| 2 | June 21, 2021 01:30 | June 23, 2021 04:30 | 2d 3h | 5,276 | 92K |
| 3 | December 11, 2021 06:30 | December 14, 2021 00:45 | 2d 18h | 5,230 | 63K |
| 4 | August 2, 2021 12:45 | August 2, 2021 19:15 | 6h 30m | 3,278 | 9,402 |
| 5 | November 29, 2021 16:00 | November 30, 2021 02:15 | 10h 15m | 3,119 | 8,895 |
| 6 | May 21, 2021 17:45 | May 22, 2021 18:15 | 1d | 2,477 | 7,553 |
| 7 | November 25, 2021 19:30 | November 26, 2021 01:30 | 6h | 1,904 | 4,086 |
| 8 | July 14, 2021 14:00 | July 14, 2021 17:15 | 3h 15m | 1,893 | 1,962 |
| 9 | August 29, 2021 19:45 | August 31, 2021 21:15 | 2d 1h | 1,868 | 10K |
| 10 | July 24, 2021 15:45 | July 25, 2021 20:30 | 1d 4h | 1,736 | 5,577 |
Outage episodes by size in 2021: 79 reached 100+ customers, 19 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 Lenawee 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 |
| DTE Electric Company | 2021 | 15.5 hrs | 1.58 | 2.3 hrs | 0.92 |
| Midwest Energy Cooperative - (MI) | 2014 | 9.8 hrs | 2.23 | 4.9 hrs | 1.87 |
| Village of Clinton - (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 ÷ 34,336 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. Lenawee County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Lenawee 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/lenawee-county