County annual report · FIPS 39023
2025 Clark County, OH Power Outage Report
In 2025, customers in Clark County, OH went without power for an average of 4.2 hours, a total of 350K customer-hours (Ohio average 4.0 hours). That ranks 40th worst of 88 Ohio counties and 1720th 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 Clark 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 | June 18, 2025 20:30 | June 23, 2025 06:00 | 4d 9h | 17,465 | 194K |
| 2 | July 19, 2025 19:30 | July 20, 2025 15:45 | 20h 15m | 4,900 | 8,573 |
| 3 | July 25, 2025 16:45 | July 29, 2025 08:00 | 3d 15h | 4,402 | 28K |
| 4 | May 13, 2025 03:15 | May 13, 2025 07:15 | 4h | 4,012 | 7,020 |
| 5 | August 6, 2025 14:45 | August 6, 2025 17:30 | 2h 45m | 3,664 | 2,277 |
| 6 | June 8, 2025 18:00 | June 8, 2025 20:00 | 2h | 3,406 | 2,706 |
| 7 | March 4, 2025 18:00 | March 4, 2025 19:00 | 1h | 2,382 | 2,045 |
| 8 | April 29, 2025 17:30 | April 30, 2025 14:45 | 21h 15m | 2,302 | 7,176 |
| 9 | April 27, 2025 19:00 | April 28, 2025 01:15 | 6h 15m | 2,210 | 7,718 |
| 10 | April 9, 2025 01:45 | April 9, 2025 04:15 | 2h 30m | 2,207 | 5,518 |
Outage episodes by size in 2025: 96 reached 100+ customers, 26 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 Clark 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 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 |
| Duke Energy Ohio Inc | 2024 | 5.4 hrs | 1.04 | 1.7 hrs | 0.80 |
| Pioneer Rural Elec Coop, Inc - (OH) | 2024 | 2.1 hrs | 1.25 | 1.6 hrs | 1.05 |
| South Vienna Corporation | - | - | - | - | - |
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 ÷ 83,871 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. Clark County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Clark 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/clark-county