County annual report · FIPS 26155
2017 Shiawassee County, MI Power Outage Report
In 2017, customers in Shiawassee County, MI went without power for an average of 4.6 hours, a total of 190K customer-hours (Michigan average 6.0 hours). That ranks 47th worst of 80 Michigan counties and 1016th of 2,786 nationally.
Compared with MI, the US and 2016
Coverage line is EAGLE-I's share of Michigan customers tracked each year.
Biggest outages in Shiawassee County, 2017
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 9, 2017 19:30 | March 10, 2017 16:30 | 21h | 4,122 | 57K |
| 2 | September 29, 2017 15:30 | September 29, 2017 19:00 | 3h 30m | 3,606 | 4,506 |
| 3 | March 10, 2017 19:30 | March 12, 2017 06:00 | 1d 10h | 2,833 | 46K |
| 4 | December 2, 2017 20:00 | December 2, 2017 21:45 | 1h 45m | 2,504 | 3,130 |
| 5 | September 21, 2017 20:15 | September 22, 2017 12:00 | 15h 45m | 1,035 | 8,367 |
| 6 | April 5, 2017 23:00 | April 8, 2017 17:45 | 2d 18h | 1,023 | 17K |
| 7 | July 6, 2017 20:45 | July 6, 2017 22:45 | 2h | 939 | 265 |
| 8 | August 11, 2017 18:30 | August 11, 2017 22:45 | 4h 15m | 767 | 2,939 |
| 9 | July 10, 2017 13:00 | July 11, 2017 02:15 | 13h 15m | 659 | 423 |
| 10 | March 24, 2017 02:30 | March 24, 2017 04:15 | 1h 45m | 641 | 1,116 |
Outage episodes by size in 2017: 42 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 2017, 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) | 2017 | 10.1 hrs | 1.31 | 2.7 hrs | 0.89 |
| DTE Electric Company | 2017 | 17.7 hrs | 1.39 | 3.3 hrs | 0.99 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Michigan's customers in 2017; 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, 2017, 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/2017/michigan/shiawassee-county