County annual report · FIPS 39159
2025 Union County, OH Power Outage Report
In 2025, customers in Union County, OH went without power for an average of 1.7 hours, a total of 53K customer-hours (Ohio average 4.0 hours). That ranks 80th worst of 88 Ohio counties and 2527th of 3,000 nationally.
Compared with OH, the US and 2024
Coverage line is EAGLE-I's share of Ohio customers tracked each year.
Biggest outages in Union County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 17, 2025 21:45 | April 17, 2025 23:30 | 1h 45m | 1,945 | 2,918 |
| 2 | April 18, 2025 12:30 | April 18, 2025 13:30 | 1h | 1,641 | 411 |
| 3 | July 20, 2025 19:00 | July 20, 2025 21:15 | 2h 15m | 1,555 | 1,585 |
| 4 | February 4, 2025 17:45 | February 4, 2025 20:45 | 3h | 1,535 | 1,378 |
| 5 | March 1, 2025 01:45 | March 1, 2025 03:30 | 1h 45m | 1,532 | 2,681 |
| 6 | January 23, 2025 17:00 | January 23, 2025 19:45 | 2h 45m | 1,528 | 800 |
| 7 | August 12, 2025 23:30 | August 13, 2025 06:00 | 6h 30m | 1,473 | 375 |
| 8 | July 23, 2025 19:00 | July 23, 2025 20:45 | 1h 45m | 1,303 | 424 |
| 9 | August 12, 2025 11:45 | August 12, 2025 16:45 | 5h | 1,300 | 3,251 |
| 10 | March 29, 2025 04:00 | March 29, 2025 07:15 | 3h 15m | 1,290 | 1,947 |
Outage episodes by size in 2025: 45 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 Union County reported on EIA Form 861 for 2025, 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 Power Co | 2024 | 4.5 hrs | 1.13 | 2.6 hrs | 0.99 |
| Ohio Edison Co | 2024 | 3.9 hrs | 1.28 | 1.9 hrs | 1.03 |
| Dayton Power & Light Co | 2024 | 8.4 hrs | 1.26 | 1.8 hrs | 0.87 |
| Pioneer Rural Elec Coop, Inc - (OH) | 2024 | 2.1 hrs | 1.25 | 1.6 hrs | 1.05 |
| Mid-Ohio Energy Coop, Inc | 2018 | 88 min | - | 79 min | - |
| Consolidated Cooperative | 2024 | 5.9 hrs | 1.23 | 87 min | 0.93 |
| Union Rural Electric Coop, Inc | 2024 | 4.3 hrs | 2.11 | 59 min | 0.48 |
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 Ohio's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 30,359 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. Union County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Union County, OH annual power outage report, 2025, 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/2025/ohio/union-county