County annual report · FIPS 39059
2025 Guernsey County, OH Power Outage Report
In 2025, customers in Guernsey County, OH went without power for an average of 6.4 hours, a total of 174K customer-hours (Ohio average 4.0 hours). That ranks 20th worst of 88 Ohio counties and 1233rd 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 Guernsey 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 29, 2025 20:00 | May 2, 2025 19:45 | 2d 23h | 5,240 | 82K |
| 2 | March 16, 2025 10:00 | March 18, 2025 02:00 | 1d 16h | 4,912 | 23K |
| 3 | June 18, 2025 22:30 | June 19, 2025 15:45 | 17h 15m | 2,344 | 7,273 |
| 4 | May 12, 2025 23:15 | May 13, 2025 02:45 | 3h 30m | 1,274 | 2,550 |
| 5 | July 10, 2025 23:45 | July 11, 2025 01:45 | 2h | 933 | 1,865 |
| 6 | July 20, 2025 07:15 | July 20, 2025 16:00 | 8h 45m | 918 | 1,540 |
| 7 | May 3, 2025 00:15 | May 3, 2025 18:00 | 17h 45m | 871 | 2,098 |
| 8 | November 15, 2025 21:00 | November 16, 2025 01:30 | 4h 30m | 791 | 2,808 |
| 9 | March 30, 2025 08:00 | March 30, 2025 13:00 | 5h | 712 | 2,314 |
| 10 | July 31, 2025 08:00 | July 31, 2025 17:30 | 9h 30m | 707 | 1,093 |
Outage episodes by size in 2025: 52 reached 100+ customers, 4 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 Guernsey 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 |
| Guernsey-Muskingum El Coop Inc | 2024 | 8.2 hrs | 2.68 | 8.1 hrs | 2.64 |
| Frontier Power Company | 2018 | 2.2 hrs | 1.43 | 2.2 hrs | 1.43 |
| Washington Electric Coop - (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 n/a of Ohio's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 27,110 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. Guernsey County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Guernsey 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/guernsey-county