County annual report · FIPS 39135
2021 Preble County, OH Power Outage Report
In 2021, customers in Preble County, OH went without power for an average of 5.9 hours, a total of 117K customer-hours (Ohio average 4.2 hours). That ranks 20th worst of 88 Ohio counties and 1171st 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 Preble 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 | July 28, 2021 14:15 | July 29, 2021 02:45 | 12h 30m | 5,406 | 5,448 |
| 2 | March 18, 2021 12:45 | March 20, 2021 00:00 | 1d 11h | 2,415 | 30K |
| 3 | November 11, 2021 15:30 | November 13, 2021 04:15 | 1d 12h | 1,837 | 3,683 |
| 4 | March 4, 2021 16:15 | March 4, 2021 17:15 | 1h | 1,624 | 827 |
| 5 | January 31, 2021 16:30 | January 31, 2021 19:45 | 3h 15m | 1,623 | 1,626 |
| 6 | May 16, 2021 18:30 | May 17, 2021 17:45 | 23h 15m | 1,618 | 14K |
| 7 | October 24, 2021 14:45 | October 24, 2021 17:45 | 3h | 1,566 | 3,134 |
| 8 | December 28, 2021 12:45 | December 28, 2021 15:45 | 3h | 1,464 | 3,292 |
| 9 | June 18, 2021 20:45 | June 21, 2021 03:00 | 2d 6h | 1,379 | 12K |
| 10 | March 26, 2021 06:45 | March 27, 2021 21:30 | 1d 14h | 1,365 | 8,569 |
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 Preble 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 |
|---|---|---|---|---|---|
| Dayton Power & Light Co | 2021 | 3.0 hrs | 0.99 | 1.8 hrs | 0.81 |
| Duke Energy Ohio Inc | 2021 | 2.4 hrs | 1.02 | 2.1 hrs | 0.95 |
| Butler Rural Electric Coop Inc - (OH) | 2021 | 3.6 hrs | 2.85 | 1.8 hrs | 2.05 |
| Darke Rural Electric Coop, Inc | - | - | - | - | - |
| Village of Eldorado - (OH) | - | - | - | - | - |
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 ÷ 20,004 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. Preble County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Preble 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/preble-county