County annual report · FIPS 42085
2025 Mercer County, PA Power Outage Report
In 2025, customers in Mercer County, PA went without power for an average of 3.7 hours, a total of 178K customer-hours (Pennsylvania average 9.8 hours). That ranks 54th worst of 67 Pennsylvania counties and 1851st of 3,000 nationally.
Compared with PA, the US and 2024
Coverage line is EAGLE-I's share of Pennsylvania customers tracked each year.
Biggest outages in Mercer 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 30, 2025 13:15 | July 1, 2025 05:45 | 16h 30m | 6,382 | 6,713 |
| 2 | December 29, 2025 07:45 | December 30, 2025 20:15 | 1d 12h | 3,432 | 10K |
| 3 | July 1, 2025 15:30 | July 2, 2025 06:00 | 14h 30m | 3,063 | 6,234 |
| 4 | May 22, 2025 12:00 | May 22, 2025 20:45 | 8h 45m | 3,055 | 3,102 |
| 5 | March 16, 2025 12:30 | March 17, 2025 22:30 | 1d 10h | 2,775 | 11K |
| 6 | March 2, 2025 19:00 | March 3, 2025 11:15 | 16h 15m | 2,304 | 14K |
| 7 | July 12, 2025 19:30 | July 13, 2025 14:30 | 19h | 2,151 | 5,192 |
| 8 | May 10, 2025 10:45 | May 10, 2025 12:15 | 1h 30m | 1,854 | 603 |
| 9 | January 13, 2025 14:45 | January 13, 2025 16:15 | 1h 30m | 1,675 | 947 |
| 10 | April 29, 2025 21:00 | May 2, 2025 19:00 | 2d 22h | 1,606 | 5,694 |
Outage episodes by size in 2025: 85 reached 100+ customers, 22 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 Mercer 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 |
|---|---|---|---|---|---|
| FirstEnergy Pennsylvania Electric Co | 2024 | 6.7 hrs | 1.85 | 3.7 hrs | 1.49 |
| Pennsylvania Power Co | 2023 | 11.8 hrs | 1.51 | 2.0 hrs | 0.86 |
| Central Electric Coop, Inc - (PA) | - | - | - | - | - |
| Northwestern Rural E C A, Inc - (PA) | - | - | - | - | - |
| Borough of Grove City - (PA) | - | - | - | - | - |
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 Pennsylvania's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 48,402 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. Mercer County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mercer County, PA 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/pennsylvania/mercer-county