County annual report · FIPS 26105
2020 Mason County, MI Power Outage Report
In 2020, customers in Mason County, MI went without power for an average of 6.1 hours, a total of 115K customer-hours (Michigan average 9.8 hours). That ranks 60th worst of 83 Michigan counties and 1227th of 3,019 nationally.
Compared with MI, the US and 2019
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Mason County, 2020
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 3, 2020 03:30 | June 4, 2020 08:00 | 1d 4h | 2,797 | 34K |
| 2 | January 7, 2020 14:00 | January 8, 2020 08:45 | 18h 45m | 2,629 | 15K |
| 3 | June 10, 2020 01:00 | June 12, 2020 20:15 | 2d 19h | 2,355 | 15K |
| 4 | June 23, 2020 05:00 | June 23, 2020 10:30 | 5h 30m | 1,139 | 4,516 |
| 5 | July 18, 2020 18:30 | July 20, 2020 15:45 | 1d 21h | 785 | 3,702 |
| 6 | September 11, 2020 15:45 | September 11, 2020 16:15 | 30m | 755 | 190 |
| 7 | August 8, 2020 17:15 | August 9, 2020 01:15 | 8h | 662 | 1,894 |
| 8 | November 15, 2020 07:15 | November 16, 2020 06:15 | 23h | 636 | 4,545 |
| 9 | August 27, 2020 15:15 | August 28, 2020 01:30 | 10h 15m | 624 | 2,972 |
| 10 | August 28, 2020 11:45 | August 28, 2020 16:00 | 4h 15m | 606 | 179 |
Outage episodes by size in 2020: 40 reached 100+ customers, 4 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 2020, 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) | 2020 | 8.5 hrs | 1.35 | 3.2 hrs | 1.03 |
| Great Lakes Energy Coop | 2020 | 8.1 hrs | 2.57 | 3.5 hrs | 1.72 |
| 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 95% of Michigan's customers in 2020; 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, 2020, 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/2020/michigan/mason-county