County annual report · FIPS 39109
2021 Miami County, OH Power Outage Report
In 2021, customers in Miami County, OH went without power for an average of 3.3 hours, a total of 145K customer-hours (Ohio average 4.2 hours). That ranks 55th worst of 88 Ohio counties and 1731st of 2,974 nationally.
Compared with OH, the US and 2020
Coverage line is EAGLE-I's share of Ohio customers tracked each year.
Biggest outages in Miami 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 | February 17, 2021 12:00 | February 17, 2021 23:45 | 11h 45m | 8,874 | 51K |
| 2 | July 12, 2021 16:00 | July 12, 2021 23:30 | 7h 30m | 3,642 | 3,762 |
| 3 | February 15, 2021 23:00 | February 16, 2021 02:30 | 3h 30m | 3,541 | 3,967 |
| 4 | June 18, 2021 18:00 | June 19, 2021 08:30 | 14h 30m | 3,033 | 10K |
| 5 | December 11, 2021 07:45 | December 13, 2021 05:45 | 1d 22h | 3,026 | 16K |
| 6 | December 27, 2021 21:00 | December 27, 2021 21:45 | 45m | 3,009 | 2,257 |
| 7 | September 18, 2021 20:30 | September 19, 2021 01:30 | 5h | 2,329 | 1,695 |
| 8 | March 30, 2021 15:15 | March 30, 2021 22:00 | 6h 45m | 2,084 | 3,802 |
| 9 | August 17, 2021 20:00 | August 17, 2021 21:15 | 1h 15m | 1,848 | 2,310 |
| 10 | October 3, 2021 23:45 | October 4, 2021 02:00 | 2h 15m | 1,206 | 1,509 |
Outage episodes by size in 2021: 42 reached 100+ customers, 11 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 Miami 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 |
|---|---|---|---|---|---|
| Ohio Edison Co | 2021 | 2.7 hrs | 1.40 | 1.9 hrs | 1.23 |
| Dayton Power & Light Co | 2021 | 3.0 hrs | 0.99 | 1.8 hrs | 0.81 |
| Pioneer Rural Elec Coop, Inc - (OH) | 2021 | 1.7 hrs | 1.01 | 1.7 hrs | 1.01 |
| City of Piqua - (OH) | 2021 | 78 min | 2.25 | 13 min | 0.29 |
| City of Tipp City - (OH) | 2018 | 26 min | 0.30 | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 93% of Ohio's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 43,362 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. Miami County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Miami County, OH 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/ohio/miami-county