Warren CountyPower Outage History
What this grade means
Bottom 20% least reliable nationally — frequent and/or long outages. This county ranks in the least reliable fifth of all US counties in our dataset: some combination of frequent outages, long restoration times, or customers affected puts it near the bottom nationally. Backup power is worth prioritizing here rather than treating it as optional.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Mar 2, 2018 | 81 hrs | 19,281 (35%) | Winter Storm |
| Sep 28, 2017 | 2 hrs | 17,112 (31%) | Unnamed event |
| Aug 4, 2020 | 97 hrs | 17,039 (31%) | Tropical Storm Isaias |
| Jul 29, 2017 | <1 hr | 16,784 (30%) | Thunderstorm Wind |
| Dec 19, 2025 | 81 hrs | 13,556 (24%) | Winter Storm |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Warren County, New Jersey that day.
Over the 11 years from 2015 to 2025, Warren County recorded 1,278 distinct power outage events, averaging 3.6 hours per event.
The single worst outage on record in Warren County started March 2, 2018 (Winter Storm), lasting 81 hours and leaving up to 19,281 customers without power (35% of the county) at its peak.
July has historically been the worst month for outages in Warren County, with 171 events recorded during that month across the dataset.
Based on this history, Warren County earns a Reliability Grade of F, placing it in the 13th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in New Jersey
Counties with the closest reliability grade and national percentile to Warren County.
| County | Grade | National percentile |
|---|---|---|
| Morris County | F | 13th |
| Hunterdon County | F | 8th |
| Sussex County | F | 6th |
| Monmouth County | D | 26th |
| Burlington County | D | 32nd |
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 Warren County?
Between 2015 and 2025, Warren County recorded 1,278 outage events, averaging 3.6 hours each.
What is Warren County's reliability grade?
Warren County has a Reliability Grade of F, in the 13th national percentile.
What was the worst power outage in Warren County?
The worst outage on record started March 2, 2018 (Winter Storm), lasting 81 hours and affecting up to 19,281 customers.