County annual report · FIPS 26155
2019 Shiawassee County, MI Power Outage Report
In 2019, customers in Shiawassee County, MI went without power for an average of 9.2 hours, a total of 379K customer-hours (Michigan average 12.7 hours). That ranks 45th worst of 83 Michigan counties and 596th 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 Shiawassee 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 | March 14, 2019 22:45 | March 17, 2019 05:15 | 2d 6h | 6,164 | 97K |
| 2 | March 30, 2019 20:15 | March 31, 2019 09:30 | 13h 15m | 4,235 | 26K |
| 3 | December 2, 2019 03:15 | December 2, 2019 08:30 | 5h 15m | 3,294 | 3,799 |
| 4 | July 19, 2019 22:30 | July 26, 2019 10:30 | 6d 12h | 3,083 | 122K |
| 5 | April 19, 2019 19:00 | April 20, 2019 08:00 | 13h | 1,395 | 10K |
| 6 | October 27, 2019 03:30 | October 28, 2019 21:30 | 1d 18h | 1,390 | 6,984 |
| 7 | July 15, 2019 19:45 | July 17, 2019 18:00 | 1d 22h | 1,376 | 10K |
| 8 | May 23, 2019 10:30 | May 24, 2019 18:45 | 1d 8h | 1,112 | 9,146 |
| 9 | August 30, 2019 00:45 | August 30, 2019 16:00 | 15h 15m | 982 | 4,709 |
| 10 | April 26, 2019 10:00 | April 26, 2019 10:30 | 30m | 861 | 216 |
Outage episodes by size in 2019: 56 reached 100+ customers, 8 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 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 |
| DTE Electric Company | 2018 | 8.1 hrs | 1.36 | 3.0 hrs | 1.04 |
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 ÷ 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, 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/shiawassee-county