Columbia 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 |
|---|---|---|---|
| Oct 28, 2015 | 2 hrs | 21,274 (60%) | Unnamed event |
| Oct 28, 2015 | 12 hrs | 15,680 (44%) | Unnamed event |
| Jun 26, 2024 | 2 hrs | 12,315 (35%) | Thunderstorm Wind |
| Jun 27, 2024 | <1 hr | 12,082 (34%) | Thunderstorm Wind |
| Jun 27, 2024 | <1 hr | 12,077 (34%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Columbia County, Pennsylvania that day.
Over the 12 years from 2014 to 2025, Columbia County recorded 947 distinct power outage events, averaging 3.1 hours per event.
The single worst outage on record in Columbia County started October 28, 2015, lasting 2 hours and leaving up to 21,274 customers without power (60% of the county) at its peak.
July has historically been the worst month for outages in Columbia County, with 119 events recorded during that month across the dataset.
Based on this history, Columbia County earns a Reliability Grade of D, placing it in the 27th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Pennsylvania
Counties with the closest reliability grade and national percentile to Columbia County.
| County | Grade | National percentile |
|---|---|---|
| McKean County | D | 27th |
| Montgomery County | D | 28th |
| Jefferson County | D | 28th |
| Warren County | D | 28th |
| Clarion County | D | 29th |
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 Columbia County?
Between 2014 and 2025, Columbia County recorded 947 outage events, averaging 3.1 hours each.
What is Columbia County's reliability grade?
Columbia County has a Reliability Grade of D, in the 27th national percentile.
What was the worst power outage in Columbia County?
The worst outage on record started October 28, 2015, lasting 2 hours and affecting up to 21,274 customers.