York County Power Outage History
2014–2025 · Pennsylvania
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 7, 2023 | 13 hrs | 36,294 (18%) | Tornado |
| Jan 12, 2021 | 2 hrs | 27,662 (13%) | Unnamed event |
| Aug 8, 2023 | 87 hrs | 23,773 (12%) | Tornado |
| Jul 16, 2024 | 48 hrs | 18,730 (9%) | Thunderstorm Wind |
| Sep 5, 2017 | 6 hrs | 18,630 (9%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, York County recorded 2,321 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in York County started August 7, 2023 (Tornado), lasting 13 hours and leaving up to 36,294 customers without power (18% of the county) at its peak.
June has historically been the worst month for outages in York County, with 288 events recorded during that month across the dataset.
Based on this history, York County earns a Reliability Grade of C, placing it in the 56th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Pennsylvania
Counties with the closest reliability grade and national percentile to York County.
| County | Grade | National percentile |
|---|---|---|
| Adams County | C | 56th |
| Erie County | C | 55th |
| Northumberland County | C | 58th |
| Lebanon County | C | 58th |
| Lycoming County | C | 59th |
FAQ
How often does power go out in York County?
Between 2014 and 2025, York County recorded 2,321 outage events, averaging 2.7 hours each.
What is York County's reliability grade?
York County has a Reliability Grade of C, in the 56th national percentile.
What was the worst power outage in York County?
The worst outage on record started August 7, 2023 (Tornado), lasting 13 hours and affecting up to 36,294 customers.