County annual report · FIPS 26097
2025 Mackinac County, MI Power Outage Report
In 2025, customers in Mackinac County, MI went without power for an average of 83.5 hours, a total of 731K customer-hours (Michigan average 12.9 hours). That ranks 11th worst of 83 Michigan counties and 38th of 3,000 nationally.
Compared with MI, the US and 2024
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Mackinac County, 2025
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 27, 2025 09:45 | May 8, 2025 18:00 | 42d 8h | 7,585 | 554K |
| 2 | September 13, 2025 12:15 | September 13, 2025 15:00 | 2h 45m | 2,156 | 5,390 |
| 3 | November 28, 2025 10:45 | January 1, 2026 00:00 | 33d 13h | 2,057 | 93K |
| 4 | February 15, 2025 17:45 | March 20, 2025 20:30 | 33d 2h | 1,421 | 19K |
| 5 | June 6, 2025 13:15 | June 6, 2025 15:45 | 2h 30m | 1,378 | 691 |
| 6 | September 5, 2025 09:30 | September 6, 2025 15:30 | 1d 6h | 1,286 | 5,641 |
| 7 | May 22, 2025 12:15 | June 2, 2025 19:45 | 11d 7h | 1,066 | 2,268 |
| 8 | October 10, 2025 19:45 | October 11, 2025 12:45 | 17h | 941 | 1,111 |
| 9 | November 2, 2025 23:30 | November 4, 2025 00:30 | 1d 1h | 871 | 6,509 |
| 10 | June 18, 2025 22:30 | June 19, 2025 02:00 | 3h 30m | 813 | 1,597 |
Outage episodes by size in 2025: 37 reached 100+ customers, 7 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 Mackinac County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| Presque Isle Elec & Gas Coop | 2015 | 22.8 hrs | 2.30 | 3.8 hrs | 1.32 |
| Cloverland Electric Co-op | 2024 | 8.9 hrs | 3.61 | 6.4 hrs | 3.05 |
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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 8,757 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. Mackinac County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Mackinac County, MI annual power outage report, 2025, 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/2025/michigan/mackinac-county