County annual report · FIPS 26067
2018 Ionia County, MI Power Outage Report
In 2018, customers in Ionia County, MI went without power for an average of 7.6 hours, a total of 268K customer-hours (Michigan average 10.0 hours). That ranks 33rd worst of 80 Michigan counties and 717th of 2,798 nationally.
Compared with MI, the US and 2017
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Ionia County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 9, 2018 17:00 | May 10, 2018 09:15 | 16h 15m | 5,887 | 28K |
| 2 | May 28, 2018 16:00 | May 29, 2018 08:45 | 16h 45m | 4,251 | 9,775 |
| 3 | May 4, 2018 14:45 | May 6, 2018 22:00 | 2d 7h | 3,766 | 85K |
| 4 | April 14, 2018 07:30 | April 16, 2018 15:15 | 2d 7h | 3,258 | 42K |
| 5 | October 28, 2018 07:00 | October 28, 2018 08:45 | 1h 45m | 1,358 | 2,377 |
| 6 | November 11, 2018 08:15 | November 11, 2018 10:45 | 2h 30m | 1,358 | 3,395 |
| 7 | April 4, 2018 15:30 | April 4, 2018 22:30 | 7h | 1,290 | 3,213 |
| 8 | November 26, 2018 09:30 | November 26, 2018 19:30 | 10h | 1,049 | 3,521 |
| 9 | August 27, 2018 03:45 | August 28, 2018 04:15 | 1d | 1,027 | 12K |
| 10 | April 12, 2018 07:45 | April 12, 2018 10:45 | 3h | 949 | 2,369 |
Outage episodes by size in 2018: 66 reached 100+ customers, 9 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 Ionia County reported on EIA Form 861 for 2018, 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) | 2018 | 6.8 hrs | 1.29 | 3.3 hrs | 1.02 |
| Tri-County Electric Coop (MI) | 2018 | 5.0 hrs | 1.98 | 4.2 hrs | 1.89 |
| 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 91% of Michigan's customers in 2018; 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, 2018, 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/2018/michigan/ionia-county