County annual report · FIPS 26067
2017 Ionia County, MI Power Outage Report
In 2017, customers in Ionia County, MI went without power for an average of 9.5 hours, a total of 335K customer-hours (Michigan average 6.0 hours). That ranks 23rd worst of 80 Michigan counties and 559th of 2,786 nationally.
Compared with MI, the US and 2016
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Ionia County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 9, 2017 19:30 | March 10, 2017 16:30 | 21h | 10,361 | 164K |
| 2 | March 10, 2017 19:30 | March 12, 2017 06:00 | 1d 10h | 4,867 | 83K |
| 3 | April 6, 2017 10:45 | April 7, 2017 22:45 | 1d 12h | 4,617 | 19K |
| 4 | March 18, 2017 09:45 | March 18, 2017 18:30 | 8h 45m | 1,999 | 9,595 |
| 5 | May 18, 2017 08:00 | May 19, 2017 00:00 | 16h | 1,387 | 3,976 |
| 6 | July 7, 2017 11:30 | July 10, 2017 02:00 | 2d 14h | 926 | 4,782 |
| 7 | July 18, 2017 17:45 | July 18, 2017 21:15 | 3h 30m | 749 | 1,113 |
| 8 | April 5, 2017 14:30 | April 5, 2017 19:00 | 4h 30m | 729 | 2,764 |
| 9 | October 28, 2017 03:15 | October 28, 2017 14:30 | 11h 15m | 661 | 4,625 |
| 10 | March 12, 2017 07:00 | March 13, 2017 22:45 | 1d 15h | 585 | 7,175 |
Outage episodes by size in 2017: 43 reached 100+ customers, 5 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 2017, 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) | 2017 | 10.1 hrs | 1.31 | 2.7 hrs | 0.89 |
| Tri-County Electric Coop (MI) | 2017 | 3.9 hrs | 1.52 | 2.3 hrs | 1.34 |
| 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 2017; 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, 2017, 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/2017/michigan/ionia-county