Butler CountyPower Outage History
What this grade means
Worse than average — more frequent or longer outages than most counties. This county's recorded history shows more frequent outages and/or longer restoration times than most US counties over the same 12-year period. If you live here, it's worth taking backup power more seriously than an average household would.
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 |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Butler County, Pennsylvania that day.
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).
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 |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
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.