County annual report · FIPS 39165
2021 Warren County, OH Power Outage Report
In 2021, customers in Warren County, OH went without power for an average of 2.8 hours, a total of 323K customer-hours (Ohio average 4.2 hours). That ranks 66th worst of 88 Ohio counties and 1924th 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 Warren 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 | June 18, 2021 22:00 | June 21, 2021 10:30 | 2d 12h | 15,895 | 141K |
| 2 | June 25, 2021 09:30 | June 25, 2021 23:00 | 13h 30m | 5,495 | 7,075 |
| 3 | June 18, 2021 02:15 | June 18, 2021 09:30 | 7h 15m | 4,377 | 13K |
| 4 | June 29, 2021 18:15 | June 30, 2021 16:15 | 22h | 3,691 | 9,694 |
| 5 | June 11, 2021 20:15 | June 13, 2021 08:00 | 1d 11h | 3,667 | 1,780 |
| 6 | June 16, 2021 02:45 | June 16, 2021 08:45 | 6h | 3,665 | 15K |
| 7 | June 26, 2021 01:15 | June 26, 2021 05:00 | 3h 45m | 3,659 | 1,017 |
| 8 | March 26, 2021 05:00 | March 27, 2021 21:30 | 1d 16h | 2,801 | 14K |
| 9 | May 15, 2021 05:00 | May 15, 2021 05:15 | 15m | 2,413 | 603 |
| 10 | June 4, 2021 21:15 | June 5, 2021 04:00 | 6h 45m | 2,230 | 1,288 |
Outage episodes by size in 2021: 106 reached 100+ customers, 23 reached 1,000+ customers, 1 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 Warren 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 |
| Duke Energy | - | - | - | - | - |
| City of Lebanon - (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 ÷ 115,421 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. Warren County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Warren 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/warren-county