County annual report · FIPS 26105
2017 Mason County, MI Power Outage Report
In 2017, customers in Mason County, MI went without power for an average of 3.8 hours, a total of 73K customer-hours (Michigan average 6.0 hours). That ranks 56th worst of 80 Michigan counties and 1148th of 2,786 nationally.
Compared with MI, the US and 2016
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Mason County, 2017
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 20, 2017 07:30 | April 20, 2017 19:30 | 12h | 9,079 | 26K |
| 2 | April 6, 2017 17:00 | April 7, 2017 05:45 | 12h 45m | 1,529 | 2,664 |
| 3 | April 15, 2017 20:45 | April 16, 2017 01:00 | 4h 15m | 1,412 | 4,163 |
| 4 | August 28, 2017 07:45 | August 28, 2017 09:45 | 2h | 1,407 | 1,417 |
| 5 | July 11, 2017 10:30 | July 11, 2017 12:30 | 2h | 1,287 | 1,814 |
| 6 | December 5, 2017 03:15 | December 6, 2017 18:30 | 1d 15h | 1,002 | 7,049 |
| 7 | October 14, 2017 21:00 | October 15, 2017 23:30 | 1d 2h | 839 | 2,108 |
| 8 | August 3, 2017 16:00 | August 4, 2017 05:45 | 13h 45m | 682 | 3,320 |
| 9 | September 4, 2017 04:45 | September 4, 2017 12:30 | 7h 45m | 650 | 730 |
| 10 | May 17, 2017 21:15 | May 18, 2017 01:00 | 3h 45m | 473 | 523 |
Outage episodes by size in 2017: 34 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 Mason County reported on EIA Form 861 for 2017, 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) | 2017 | 10.1 hrs | 1.31 | 2.7 hrs | 0.89 |
| Great Lakes Energy Coop | 2017 | 5.6 hrs | 2.07 | 3.0 hrs | 1.50 |
| Wolverine Power Supply Coop | - | - | - | - | - |
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 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 18,909 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. Mason County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mason County, MI annual power outage report, 2017, 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/2017/michigan/mason-county