County annual report · FIPS 26069
2023 Iosco County, MI Power Outage Report
In 2023, customers in Iosco County, MI went without power for an average of 6.7 hours, a total of 95K customer-hours (Michigan average 26.5 hours). That ranks 46th worst of 83 Michigan counties and 1191st 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 Iosco 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 | October 7, 2023 12:30 | October 7, 2023 16:45 | 4h 15m | 3,691 | 9,202 |
| 2 | October 9, 2023 15:15 | October 9, 2023 18:00 | 2h 45m | 2,972 | 3,742 |
| 3 | June 29, 2023 18:15 | July 1, 2023 16:30 | 1d 22h | 1,973 | 9,657 |
| 4 | July 5, 2023 20:00 | July 6, 2023 15:30 | 19h 30m | 1,627 | 6,524 |
| 5 | November 1, 2023 14:30 | November 1, 2023 16:45 | 2h 15m | 1,517 | 3,362 |
| 6 | February 14, 2023 22:15 | February 15, 2023 03:15 | 5h | 1,469 | 4,346 |
| 7 | August 17, 2023 14:15 | August 18, 2023 00:15 | 10h | 1,309 | 3,676 |
| 8 | December 9, 2023 18:45 | December 10, 2023 22:15 | 1d 3h | 1,154 | 5,309 |
| 9 | September 6, 2023 23:45 | September 7, 2023 02:00 | 2h 15m | 1,144 | 2,462 |
| 10 | January 1, 2023 14:30 | January 1, 2023 19:15 | 4h 45m | 765 | 1,592 |
Outage episodes by size in 2023: 45 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 Iosco 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 |
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 ÷ 14,310 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. Iosco County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Iosco 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/iosco-county