County annual report · FIPS 26147
2019 St. Clair County, MI Power Outage Report
In 2019, customers in St. Clair County, MI went without power for an average of 12.0 hours, a total of 858K customer-hours (Michigan average 12.7 hours). That ranks 34th worst of 83 Michigan counties and 452nd of 2,945 nationally.
Compared with MI, the US and 2018
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in St. Clair County, 2019
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 19, 2019 10:45 | July 27, 2019 18:15 | 8d 7h | 9,968 | 426K |
| 2 | August 15, 2019 13:45 | August 25, 2019 00:15 | 9d 10h | 4,839 | 107K |
| 3 | September 10, 2019 14:45 | September 15, 2019 22:30 | 5d 7h | 4,401 | 35K |
| 4 | July 27, 2019 19:00 | August 1, 2019 07:30 | 4d 12h | 3,924 | 43K |
| 5 | May 31, 2019 23:00 | June 4, 2019 07:30 | 3d 8h | 3,281 | 26K |
| 6 | May 19, 2019 15:15 | May 21, 2019 05:45 | 1d 14h | 3,021 | 2,742 |
| 7 | February 24, 2019 00:30 | February 27, 2019 07:45 | 3d 7h | 3,013 | 30K |
| 8 | November 27, 2019 11:15 | November 30, 2019 11:15 | 3d | 2,974 | 23K |
| 9 | May 19, 2019 05:15 | May 19, 2019 05:30 | 15m | 2,823 | 706 |
| 10 | September 27, 2019 12:45 | September 29, 2019 17:15 | 2d 4h | 2,606 | 6,066 |
Outage episodes by size in 2019: 91 reached 100+ customers, 26 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 2019, 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 | 2018 | 8.1 hrs | 1.36 | 3.0 hrs | 1.04 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 96% of Michigan's customers in 2019; 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, 2019, 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/2019/michigan/st-clair-county