County annual report · FIPS 26065
2021 Ingham County, MI Power Outage Report
In 2021, customers in Ingham County, MI went without power for an average of 3.3 hours, a total of 625K customer-hours (Michigan average 26.6 hours). That ranks 79th worst of 83 Michigan counties and 1734th 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 Ingham 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 | December 11, 2021 13:45 | December 15, 2021 02:30 | 3d 12h | 6,644 | 74K |
| 2 | September 29, 2021 13:00 | September 30, 2021 23:15 | 1d 10h | 5,544 | 23K |
| 3 | September 13, 2021 16:30 | September 16, 2021 23:30 | 3d 7h | 5,534 | 97K |
| 4 | September 22, 2021 01:45 | September 29, 2021 00:30 | 6d 22h | 5,375 | 11K |
| 5 | July 24, 2021 21:30 | July 28, 2021 00:30 | 3d 3h | 4,384 | 41K |
| 6 | September 12, 2021 11:30 | September 12, 2021 22:45 | 11h 15m | 3,864 | 4,966 |
| 7 | August 11, 2021 03:45 | August 21, 2021 17:15 | 10d 13h | 3,700 | 108K |
| 8 | June 11, 2021 18:30 | June 14, 2021 00:00 | 2d 5h | 3,427 | 38K |
| 9 | February 22, 2021 07:30 | February 23, 2021 05:15 | 21h 45m | 3,144 | 20K |
| 10 | July 14, 2021 12:45 | July 15, 2021 02:00 | 13h 15m | 2,754 | 4,493 |
Outage episodes by size in 2021: 102 reached 100+ customers, 33 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 Ingham 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 |
| Tri-County Electric Coop (MI) | 2021 | 6.3 hrs | 1.63 | 2.5 hrs | 1.12 |
| Wolverine Power Supply Coop | - | - | - | - | - |
| City of Lansing - (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 ÷ 187,698 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. Ingham County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Ingham 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/ingham-county