County annual report · FIPS 26059
2021 Hillsdale County, MI Power Outage Report
In 2021, customers in Hillsdale County, MI went without power for an average of 44.4 hours, a total of 1.4M customer-hours (Michigan average 26.6 hours). That ranks 16th worst of 83 Michigan counties and 204th of 2,974 nationally.
Compared with MI, the US and 2020
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Hillsdale County, 2021
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 12, 2021 15:00 | August 20, 2021 15:00 | 8d | 13,663 | 1.1M |
| 2 | June 21, 2021 01:00 | June 23, 2021 09:45 | 2d 8h | 5,790 | 84K |
| 3 | January 3, 2021 06:45 | January 4, 2021 17:45 | 1d 11h | 2,522 | 27K |
| 4 | August 11, 2021 18:15 | August 11, 2021 22:30 | 4h 15m | 1,576 | 5,619 |
| 5 | September 7, 2021 15:45 | September 9, 2021 15:30 | 1d 23h | 1,401 | 24K |
| 6 | August 6, 2021 22:15 | August 9, 2021 00:15 | 2d 2h | 1,363 | 23K |
| 7 | August 24, 2021 12:45 | August 26, 2021 07:30 | 1d 18h | 1,036 | 4,027 |
| 8 | December 11, 2021 07:00 | December 14, 2021 04:30 | 2d 21h | 960 | 11K |
| 9 | January 18, 2021 01:45 | January 18, 2021 06:45 | 5h | 923 | 2,561 |
| 10 | June 27, 2021 01:30 | June 28, 2021 03:45 | 1d 2h | 822 | 7,057 |
Outage episodes by size in 2021: 37 reached 100+ customers, 7 reached 1,000+ customers, 1 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 Hillsdale County reported on EIA Form 861 for 2021, 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) | 2021 | 15.2 hrs | 1.60 | 3.8 hrs | 1.05 |
| Hillsdale Board of Public Wks | - | - | - | - | - |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 30,914 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. Hillsdale County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Hillsdale County, MI annual power outage report, 2021, 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/2021/michigan/hillsdale-county