County annual report · FIPS 26105
2019 Mason County, MI Power Outage Report
In 2019, customers in Mason County, MI went without power for an average of 15.6 hours, a total of 294K customer-hours (Michigan average 12.7 hours). That ranks 23rd worst of 83 Michigan counties and 312th of 2,945 nationally.
Compared with MI, the US and 2018
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Mason County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 1, 2019 14:45 | June 3, 2019 02:15 | 1d 11h | 5,195 | 45K |
| 2 | December 1, 2019 04:15 | December 5, 2019 01:30 | 3d 21h | 4,249 | 118K |
| 3 | July 20, 2019 04:15 | July 22, 2019 09:15 | 2d 5h | 2,457 | 44K |
| 4 | October 16, 2019 10:30 | October 17, 2019 00:15 | 13h 45m | 1,595 | 3,295 |
| 5 | December 16, 2019 14:45 | December 16, 2019 17:45 | 3h | 1,456 | 414 |
| 6 | October 21, 2019 12:15 | October 23, 2019 00:00 | 1d 11h | 1,295 | 4,753 |
| 7 | July 23, 2019 11:00 | July 23, 2019 17:00 | 6h | 1,062 | 1,598 |
| 8 | November 27, 2019 14:45 | November 29, 2019 00:00 | 1d 9h | 837 | 7,674 |
| 9 | August 26, 2019 06:30 | August 26, 2019 16:30 | 10h | 747 | 5,959 |
| 10 | September 12, 2019 10:45 | September 12, 2019 22:45 | 12h | 714 | 3,517 |
Outage episodes by size in 2019: 59 reached 100+ customers, 7 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 2019, 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 |
| Great Lakes Energy Coop | 2018 | 14.6 hrs | 2.44 | 2.7 hrs | 1.41 |
| 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 96% of Michigan's customers in 2019; 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, 2019, 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/2019/michigan/mason-county