County annual report · FIPS 26067
2015 Ionia County, MI Power Outage Report
In 2015, customers in Ionia County, MI went without power for an average of 5.4 hours, a total of 191K customer-hours (Michigan average 6.8 hours). That ranks 41st worst of 80 Michigan counties and 512th of 2,484 nationally.
Compared with MI, the US
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Ionia County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 21, 2015 14:15 | September 21, 2015 22:30 | 8h 15m | 2,657 | 13K |
| 2 | May 19, 2015 06:30 | May 19, 2015 14:15 | 7h 45m | 2,645 | 7,179 |
| 3 | December 24, 2015 06:15 | December 26, 2015 23:00 | 2d 16h | 2,177 | 66K |
| 4 | May 31, 2015 02:45 | May 31, 2015 23:00 | 20h 15m | 2,173 | 6,284 |
| 5 | October 21, 2015 21:30 | October 22, 2015 02:45 | 5h 15m | 2,031 | 6,881 |
| 6 | July 26, 2015 16:45 | July 26, 2015 18:15 | 1h 30m | 1,946 | 1,870 |
| 7 | August 2, 2015 20:30 | August 4, 2015 17:45 | 1d 21h | 1,677 | 15K |
| 8 | July 14, 2015 05:30 | July 15, 2015 01:15 | 19h 45m | 1,403 | 9,297 |
| 9 | May 3, 2015 04:15 | May 3, 2015 10:00 | 5h 45m | 1,341 | 7,711 |
| 10 | May 16, 2015 04:15 | May 16, 2015 11:45 | 7h 30m | 1,341 | 10K |
Outage episodes by size in 2015: 60 reached 100+ customers, 10 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 2015, 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) | 2015 | 7.3 hrs | 1.18 | 3.0 hrs | 0.98 |
| Tri-County Electric Coop (MI) | 2015 | 4.7 hrs | 1.68 | 3.0 hrs | 1.49 |
| 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 2015; 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, 2015, 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/2015/michigan/ionia-county