County annual report · FIPS 26157
2015 Tuscola County, MI Power Outage Report
In 2015, customers in Tuscola County, MI went without power for an average of 17.0 hours, a total of 283K customer-hours (Michigan average 6.8 hours). That ranks 20th worst of 80 Michigan counties and 145th of 2,484 nationally.
Compared with MI, the US
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Tuscola County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 2, 2015 11:45 | August 4, 2015 17:30 | 2d 5h | 5,190 | 120K |
| 2 | October 29, 2015 02:15 | October 30, 2015 02:00 | 23h 45m | 2,425 | 8,166 |
| 3 | December 28, 2015 16:00 | December 30, 2015 10:45 | 1d 18h | 2,408 | 5,859 |
| 4 | August 4, 2015 18:30 | August 5, 2015 03:00 | 8h 30m | 2,254 | 14K |
| 5 | November 18, 2015 15:45 | November 19, 2015 22:45 | 1d 7h | 1,892 | 8,059 |
| 6 | November 6, 2015 12:00 | November 7, 2015 20:00 | 1d 8h | 1,421 | 16K |
| 7 | May 29, 2015 10:45 | May 31, 2015 21:15 | 2d 10h | 1,148 | 2,938 |
| 8 | August 19, 2015 20:45 | August 21, 2015 02:30 | 1d 5h | 1,034 | 4,819 |
| 9 | August 14, 2015 22:00 | August 17, 2015 07:30 | 2d 9h | 976 | 25K |
| 10 | December 13, 2015 17:15 | December 14, 2015 01:45 | 8h 30m | 887 | 6,576 |
Outage episodes by size in 2015: 35 reached 100+ customers, 8 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 Tuscola County reported on EIA Form 861 for 2015, 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) | 2015 | 7.3 hrs | 1.18 | 3.0 hrs | 0.98 |
| DTE Electric Company | 2015 | 4.6 hrs | 1.00 | 3.1 hrs | 0.91 |
| Thumb Electric Coop of Mich | - | - | - | - | - |
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 2015; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 16,639 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. Tuscola County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Tuscola County, MI annual power outage report, 2015, 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/2015/michigan/tuscola-county