County annual report · FIPS 26057
2018 Gratiot County, MI Power Outage Report
In 2018, customers in Gratiot County, MI went without power for an average of 5.9 hours, a total of 123K customer-hours (Michigan average 10.0 hours). That ranks 40th worst of 80 Michigan counties and 931st 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 Gratiot 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 | February 19, 2018 23:15 | February 20, 2018 08:45 | 9h 30m | 1,933 | 14K |
| 2 | May 4, 2018 15:00 | May 7, 2018 02:30 | 2d 11h | 1,843 | 53K |
| 3 | July 20, 2018 15:15 | July 20, 2018 21:15 | 6h | 1,404 | 2,476 |
| 4 | August 27, 2018 03:30 | August 28, 2018 23:00 | 1d 19h | 742 | 13K |
| 5 | June 24, 2018 22:45 | June 25, 2018 11:30 | 12h 45m | 729 | 2,970 |
| 6 | April 14, 2018 06:45 | April 16, 2018 15:15 | 2d 8h | 528 | 9,389 |
| 7 | December 2, 2018 22:15 | December 3, 2018 00:00 | 1h 45m | 436 | 539 |
| 8 | March 20, 2018 17:00 | March 20, 2018 19:45 | 2h 45m | 353 | 494 |
| 9 | March 27, 2018 05:45 | March 27, 2018 12:45 | 7h | 334 | 1,491 |
| 10 | May 27, 2018 00:30 | May 28, 2018 17:30 | 1d 17h | 314 | 5,498 |
Outage episodes by size in 2018: 25 reached 100+ customers, 3 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 Gratiot 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 |
|---|---|---|---|---|---|
| Consumers Energy Co - (MI) | 2018 | 6.8 hrs | 1.29 | 3.3 hrs | 1.02 |
| DTE Electric Company | 2018 | 8.1 hrs | 1.36 | 3.0 hrs | 1.04 |
| Tri-County Electric Coop (MI) | 2018 | 5.0 hrs | 1.98 | 4.2 hrs | 1.89 |
| City of St Louis - (MI) | - | - | - | - | - |
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 ÷ 21,004 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. Gratiot County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Gratiot 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/gratiot-county