County annual report · FIPS 26017
2025 Bay County, MI Power Outage Report
In 2025, customers in Bay County, MI went without power for an average of 3.4 hours, a total of 222K customer-hours (Michigan average 12.9 hours). That ranks 78th worst of 83 Michigan counties and 1943rd 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 Bay 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 | July 28, 2025 23:00 | July 30, 2025 16:45 | 1d 17h | 5,585 | 55K |
| 2 | November 19, 2025 19:15 | November 20, 2025 03:45 | 8h 30m | 3,104 | 4,446 |
| 3 | August 12, 2025 19:45 | August 13, 2025 18:30 | 22h 45m | 3,058 | 27K |
| 4 | August 7, 2025 00:30 | August 7, 2025 02:45 | 2h 15m | 2,633 | 3,532 |
| 5 | September 2, 2025 17:30 | September 2, 2025 18:45 | 1h 15m | 1,425 | 713 |
| 6 | December 12, 2025 12:30 | December 12, 2025 14:00 | 1h 30m | 1,383 | 1,798 |
| 7 | September 4, 2025 22:00 | September 5, 2025 03:15 | 5h 15m | 1,322 | 3,593 |
| 8 | July 31, 2025 09:45 | July 31, 2025 13:30 | 3h 45m | 1,196 | 1,968 |
| 9 | December 26, 2025 14:30 | December 28, 2025 03:15 | 1d 12h | 1,059 | 15K |
| 10 | August 17, 2025 03:15 | August 17, 2025 10:30 | 7h 15m | 1,028 | 7,453 |
Outage episodes by size in 2025: 45 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 Bay 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 |
|---|---|---|---|---|---|
| Consumers Energy Co - (MI) | 2024 | 8.4 hrs | 1.32 | 2.6 hrs | 0.88 |
| DTE Electric Company | 2024 | 8.0 hrs | 1.25 | 2.7 hrs | 0.94 |
| City of Bay City - (MI) | 2024 | 6.9 hrs | 2.13 | 48 min | 0.45 |
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 ÷ 66,162 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. Bay County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Bay 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/bay-county