Somerset County Power Outage History
2015–2025 · Maryland
Better than average — fewer or shorter 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 |
|---|---|---|---|
| Jul 8, 2016 | 0 hrs | 4,306 (29%) | Unnamed event |
| Aug 4, 2020 | 28 hrs | 3,375 (22%) | Tropical Storm Isaias |
| Feb 19, 2016 | 3 hrs | 2,996 (20%) | Winter Storm |
| Oct 1, 2025 | 1 hrs | 2,986 (20%) | Unnamed event |
| Jun 13, 2017 | 2 hrs | 2,967 (20%) | Unnamed event |
Over the 11 years from 2015 to 2025, Somerset County recorded 407 distinct power outage events, averaging 2.1 hours per event.
The single worst outage on record in Somerset County started July 8, 2016, lasting 0 hours and leaving up to 4,306 customers without power (29% of the county) at its peak.
July has historically been the worst month for outages in Somerset County, with 58 events recorded during that month across the dataset.
Based on this history, Somerset County earns a Reliability Grade of B, placing it in the 74th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Somerset County's outage profile
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Outage-prep kit
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Similar counties in Maryland
Counties with the closest reliability grade and national percentile to Somerset County.
| County | Grade | National percentile |
|---|---|---|
| Frederick County | B | 74th |
| Washington County | B | 72nd |
| Calvert County | B | 76th |
| Montgomery County | B | 71st |
| Howard County | B | 78th |
FAQ
How often does power go out in Somerset County?
Between 2015 and 2025, Somerset County recorded 407 outage events, averaging 2.1 hours each.
What is Somerset County's reliability grade?
Somerset County has a Reliability Grade of B, in the 74th national percentile.
What was the worst power outage in Somerset County?
The worst outage on record started July 8, 2016, lasting 0 hours and affecting up to 4,306 customers.