County annual report · FIPS 26147
2024 St. Clair County, MI Power Outage Report
In 2024, customers in St. Clair County, MI went without power for an average of 4.7 hours, a total of 335K customer-hours (Michigan average 8.5 hours). That ranks 65th worst of 83 Michigan counties and 1682nd of 2,990 nationally.
Compared with MI, the US and 2023
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in St. Clair County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 5, 2024 05:00 | June 12, 2024 09:45 | 7d 4h | 3,071 | 65K |
| 2 | June 25, 2024 14:15 | June 27, 2024 08:15 | 1d 18h | 2,665 | 23K |
| 3 | January 12, 2024 19:30 | January 17, 2024 09:45 | 4d 14h | 2,583 | 40K |
| 4 | August 26, 2024 22:15 | September 2, 2024 23:30 | 7d 1h | 2,299 | 50K |
| 5 | July 7, 2024 23:00 | July 14, 2024 23:30 | 7d | 1,416 | 24K |
| 6 | September 30, 2024 12:30 | October 3, 2024 22:15 | 3d 9h | 1,317 | 1,775 |
| 7 | September 26, 2024 23:30 | September 28, 2024 09:45 | 1d 10h | 1,269 | 2,865 |
| 8 | January 25, 2024 14:30 | January 29, 2024 00:15 | 3d 9h | 1,093 | 5,284 |
| 9 | February 6, 2024 14:15 | February 9, 2024 10:45 | 2d 20h | 1,074 | 11K |
| 10 | September 8, 2024 11:15 | September 12, 2024 16:30 | 4d 5h | 1,060 | 1,717 |
Outage episodes by size in 2024: 46 reached 100+ customers, 12 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 St. Clair County reported on EIA Form 861 for 2024, 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 |
|---|---|---|---|---|---|
| DTE Electric Company | 2024 | 8.0 hrs | 1.25 | 2.7 hrs | 0.94 |
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 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 71,469 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. St. Clair County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), St. Clair County, MI annual power outage report, 2024, 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/2024/michigan/st-clair-county