Butler County Power Outage History
2014–2025 · Pennsylvania
Worse than average — more frequent or longer outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Nov 15, 2018 | 125 hrs | 37,800 (40%) | Winter Weather |
| Apr 1, 2023 | 73 hrs | 24,378 (25%) | Strong Wind |
| Apr 29, 2025 | 105 hrs | 15,747 (16%) | Thunderstorm Wind |
| Jul 8, 2015 | 8 hrs | 12,529 (13%) | Thunderstorm Wind |
| Mar 25, 2023 | 58 hrs | 12,046 (13%) | Strong Wind |
Over the 12 years from 2014 to 2025, Butler County recorded 1,247 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in Butler County started November 15, 2018 (Winter Weather), lasting 125 hours and leaving up to 37,800 customers without power (40% of the county) at its peak.
June has historically been the worst month for outages in Butler County, with 169 events recorded during that month across the dataset.
Based on this history, Butler County earns a Reliability Grade of D, placing it in the 34th 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 Butler County.
| County | Grade | National percentile |
|---|---|---|
| Bradford County | D | 33rd |
| Cambria County | D | 35th |
| Delaware County | D | 32nd |
| Elk County | D | 36th |
| Washington County | D | 31st |
FAQ
How often does power go out in Butler County?
Between 2014 and 2025, Butler County recorded 1,247 outage events, averaging 3.0 hours each.
What is Butler County's reliability grade?
Butler County has a Reliability Grade of D, in the 34th national percentile.
What was the worst power outage in Butler County?
The worst outage on record started November 15, 2018 (Winter Weather), lasting 125 hours and affecting up to 37,800 customers.