County annual report · FIPS 26067
2023 Ionia County, MI Power Outage Report
In 2023, customers in Ionia County, MI went without power for an average of 24.3 hours, a total of 855K customer-hours (Michigan average 26.5 hours). That ranks 16th worst of 83 Michigan counties and 311th of 2,977 nationally.
Compared with MI, the US and 2022
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Ionia County, 2023
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 25, 2023 00:30 | August 30, 2023 01:15 | 5d | 12,623 | 618K |
| 2 | December 9, 2023 16:45 | December 10, 2023 06:00 | 13h 15m | 5,031 | 14K |
| 3 | February 27, 2023 16:45 | March 2, 2023 23:15 | 3d 6h | 2,715 | 96K |
| 4 | June 2, 2023 18:00 | June 2, 2023 20:15 | 2h 15m | 2,130 | 3,665 |
| 5 | October 25, 2023 13:00 | October 25, 2023 18:15 | 5h 15m | 2,019 | 3,501 |
| 6 | May 10, 2023 14:15 | May 10, 2023 19:30 | 5h 15m | 1,930 | 5,359 |
| 7 | April 2, 2023 03:15 | April 2, 2023 06:45 | 3h 30m | 1,662 | 5,351 |
| 8 | July 15, 2023 06:15 | July 15, 2023 14:45 | 8h 30m | 1,516 | 4,486 |
| 9 | June 25, 2023 21:00 | June 27, 2023 03:45 | 1d 6h | 1,226 | 15K |
| 10 | May 26, 2023 16:15 | May 26, 2023 16:45 | 30m | 1,100 | 275 |
Outage episodes by size in 2023: 60 reached 100+ customers, 11 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 Ionia County reported on EIA Form 861 for 2023, 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) | 2023 | 15.2 hrs | 1.37 | 2.9 hrs | 0.96 |
| Tri-County Electric Coop (MI) | 2023 | 15.2 hrs | 1.06 | 1.9 hrs | 0.72 |
| Wolverine Power Supply Coop | - | - | - | - | - |
| City of Portland - (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 n/a of Michigan's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 35,242 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. Ionia County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Ionia County, MI annual power outage report, 2023, 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/2023/michigan/ionia-county