County annual report · FIPS 26155
2022 Shiawassee County, MI Power Outage Report
In 2022, customers in Shiawassee County, MI went without power for an average of 4.0 hours, a total of 167K customer-hours (Michigan average 10.5 hours). That ranks 74th worst of 83 Michigan counties and 1650th of 2,976 nationally.
Compared with MI, the US and 2021
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Shiawassee County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 19, 2022 16:00 | May 19, 2022 19:15 | 3h 15m | 5,518 | 9,101 |
| 2 | August 3, 2022 19:45 | August 4, 2022 23:15 | 1d 3h | 1,767 | 9,846 |
| 3 | August 1, 2022 22:30 | August 2, 2022 06:30 | 8h | 1,505 | 383 |
| 4 | November 5, 2022 22:00 | November 9, 2022 01:00 | 3d 3h | 1,353 | 38K |
| 5 | December 4, 2022 04:15 | December 4, 2022 10:45 | 6h 30m | 1,237 | 7,856 |
| 6 | March 31, 2022 10:00 | April 1, 2022 02:00 | 16h | 1,075 | 3,760 |
| 7 | July 24, 2022 04:15 | July 26, 2022 00:30 | 1d 20h | 991 | 19K |
| 8 | June 4, 2022 04:15 | June 4, 2022 10:45 | 6h 30m | 929 | 6,033 |
| 9 | August 20, 2022 19:15 | August 21, 2022 02:45 | 7h 30m | 821 | 2,111 |
| 10 | October 28, 2022 14:15 | October 28, 2022 16:30 | 2h 15m | 756 | 191 |
Outage episodes by size in 2022: 47 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 Shiawassee County reported on EIA Form 861 for 2022, 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) | 2022 | 7.8 hrs | 1.29 | 3.0 hrs | 0.96 |
| DTE Electric Company | 2022 | 9.7 hrs | 1.25 | 2.4 hrs | 0.98 |
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 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 41,361 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. Shiawassee County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Shiawassee County, MI annual power outage report, 2022, 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/2022/michigan/shiawassee-county