Somerset County Power Outage History
2014–2025 · New Jersey
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 4, 2020 | 147 hrs | 36,937 (21%) | Hurricane Isaias |
| Mar 6, 2018 | 163 hrs | 28,201 (16%) | High Wind |
| Jun 9, 2017 | 1 hrs | 22,236 (13%) | Unnamed event |
| Aug 8, 2015 | 4 hrs | 19,918 (12%) | Unnamed event |
| Sep 22, 2021 | 0 hrs | 19,161 (11%) | Unnamed event |
Over the 12 years from 2014 to 2025, Somerset County recorded 2,071 distinct power outage events, averaging 2.2 hours per event.
The single worst outage on record in Somerset County started August 4, 2020 (Hurricane Isaias), lasting 147 hours and leaving up to 36,937 customers without power (21% of the county) at its peak.
July has historically been the worst month for outages in Somerset County, with 242 events recorded during that month across the dataset.
Based on this history, Somerset County earns a Reliability Grade of C, placing it in the 47th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in New Jersey
Counties with the closest reliability grade and national percentile to Somerset County.
| County | Grade | National percentile |
|---|---|---|
| Camden County | C | 47th |
| Gloucester County | D | 39th |
| Passaic County | C | 56th |
| Salem County | D | 35th |
| Ocean County | D | 35th |
FAQ
How often does power go out in Somerset County?
Between 2014 and 2025, Somerset County recorded 2,071 outage events, averaging 2.2 hours each.
What is Somerset County's reliability grade?
Somerset County has a Reliability Grade of C, in the 47th national percentile.
What was the worst power outage in Somerset County?
The worst outage on record started August 4, 2020 (Hurricane Isaias), lasting 147 hours and affecting up to 36,937 customers.