County annual report · FIPS 26099
2018 Macomb County, MI Power Outage Report
In 2018, customers in Macomb County, MI went without power for an average of 5.1 hours, a total of 2.1M customer-hours (Michigan average 10.0 hours). That ranks 44th worst of 80 Michigan counties and 1027th of 2,798 nationally.
Compared with MI, the US and 2017
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Macomb County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 29, 2018 17:15 | May 14, 2018 13:45 | 14d 20h | 36,614 | 782K |
| 2 | April 15, 2018 18:00 | April 26, 2018 06:30 | 10d 12h | 15,034 | 291K |
| 3 | August 18, 2018 13:15 | August 25, 2018 05:30 | 6d 16h | 10,292 | 23K |
| 4 | September 8, 2018 12:30 | September 14, 2018 21:45 | 6d 9h | 5,522 | 26K |
| 5 | September 18, 2018 10:00 | September 28, 2018 10:30 | 10d | 5,403 | 122K |
| 6 | October 19, 2018 10:30 | October 25, 2018 10:30 | 6d | 4,549 | 81K |
| 7 | March 2, 2018 03:00 | March 5, 2018 10:00 | 3d 7h | 4,536 | 66K |
| 8 | April 26, 2018 07:30 | April 27, 2018 10:00 | 1d 2h | 4,408 | 10K |
| 9 | April 14, 2018 08:15 | April 15, 2018 13:30 | 1d 5h | 3,724 | 11K |
| 10 | April 3, 2018 15:15 | April 4, 2018 01:00 | 9h 45m | 3,672 | 3,761 |
Outage episodes by size in 2018: 82 reached 100+ customers, 37 reached 1,000+ customers, 3 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 Macomb County reported on EIA Form 861 for 2018, 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 91% of Michigan's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 404,553 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. Macomb County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Macomb County, MI annual power outage report, 2018, 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/2018/michigan/macomb-county