Somerset CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Apr 8, 2020 | 35 hrs | 9,603 (22%) | Thunderstorm Wind |
| May 28, 2018 | <1 hr | 6,593 (15%) | Unnamed event |
| Apr 26, 2019 | <1 hr | 5,828 (14%) | Unnamed event |
| Nov 15, 2020 | 17 hrs | 4,808 (11%) | Thunderstorm Wind |
| Aug 10, 2016 | 3 hrs | 4,435 (10%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Somerset County, Pennsylvania that day.
Over the 12 years from 2014 to 2025, Somerset County recorded 705 distinct power outage events, averaging 2.5 hours per event.
The single worst outage on record in Somerset County started April 8, 2020 (Thunderstorm Wind), lasting 35 hours and leaving up to 9,603 customers without power (22% of the county) at its peak.
April has historically been the worst month for outages in Somerset County, with 97 events recorded during that month across the dataset.
Based on this history, Somerset County earns a Reliability Grade of B, placing it in the 70th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Pennsylvania
Counties with the closest reliability grade and national percentile to Somerset County.
| County | Grade | National percentile |
|---|---|---|
| Lehigh County | B | 72nd |
| Lackawanna County | B | 68th |
| Blair County | B | 67th |
| Snyder County | B | 67th |
| Cumberland County | B | 75th |
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 Somerset County?
Between 2014 and 2025, Somerset County recorded 705 outage events, averaging 2.5 hours each.
What is Somerset County's reliability grade?
Somerset County has a Reliability Grade of B, in the 70th national percentile.
What was the worst power outage in Somerset County?
The worst outage on record started April 8, 2020 (Thunderstorm Wind), lasting 35 hours and affecting up to 9,603 customers.