County annual report · FIPS 26055
2015 Grand Traverse County, MI Power Outage Report
In 2015, customers in Grand Traverse County, MI went without power for an average of 6.4 hours, a total of 385K customer-hours (Michigan average 6.8 hours). That ranks 39th worst of 80 Michigan counties and 428th 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 Grand Traverse 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 19:15 | August 4, 2015 17:45 | 1d 22h | 8,022 | 249K |
| 2 | August 4, 2015 18:30 | August 5, 2015 03:15 | 8h 45m | 3,090 | 19K |
| 3 | August 21, 2015 15:00 | August 21, 2015 18:00 | 3h | 2,487 | 1,528 |
| 4 | December 24, 2015 05:30 | December 27, 2015 19:30 | 3d 14h | 2,400 | 51K |
| 5 | August 5, 2015 04:30 | August 7, 2015 20:45 | 2d 16h | 1,384 | 27K |
| 6 | June 18, 2015 09:45 | June 18, 2015 12:45 | 3h | 1,372 | 3,649 |
| 7 | February 20, 2015 09:00 | February 20, 2015 23:15 | 14h 15m | 751 | 9,394 |
| 8 | June 26, 2015 13:30 | June 26, 2015 14:45 | 1h 15m | 721 | 181 |
| 9 | August 19, 2015 15:45 | August 20, 2015 02:45 | 11h | 686 | 2,103 |
| 10 | July 2, 2015 18:15 | July 2, 2015 19:30 | 1h 15m | 619 | 520 |
Outage episodes by size in 2015: 40 reached 100+ customers, 6 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 Grand Traverse 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 |
| Great Lakes Energy Coop | 2015 | 15.2 hrs | 2.27 | 2.9 hrs | 1.35 |
| Wolverine Power Supply Coop | - | - | - | - | - |
| Cherryland Electric Coop Inc | - | - | - | - | - |
| City of Traverse City - (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 n/a of Michigan's customers in 2015; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 60,521 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. Grand Traverse County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Grand Traverse 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/grand-traverse-county