Monmouth County Power Outage History
2015–2025 · New Jersey
Worse than average — more frequent or longer 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 |
|---|---|---|---|
| Aug 4, 2020 | 154 hrs | 202,864 (59%) | Hurricane Isaias |
| Jul 23, 2019 | 78 hrs | 137,151 (40%) | Hurricane Barry |
| Jul 22, 2019 | 2 hrs | 134,950 (39%) | Hurricane Barry |
| Oct 19, 2022 | 3 hrs | 49,679 (14%) | Unnamed event |
| Sep 14, 2021 | 46 hrs | 45,880 (13%) | Thunderstorm Wind |
Over the 11 years from 2015 to 2025, Monmouth County recorded 3,357 distinct power outage events, averaging 2.5 hours per event.
The single worst outage on record in Monmouth County started August 4, 2020 (Hurricane Isaias), lasting 154 hours and leaving up to 202,864 customers without power (59% of the county) at its peak.
July has historically been the worst month for outages in Monmouth County, with 428 events recorded during that month across the dataset.
Based on this history, Monmouth County earns a Reliability Grade of D, placing it in the 26th 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 Monmouth County.
| County | Grade | National percentile |
|---|---|---|
| Burlington County | D | 32nd |
| Cape May County | D | 35th |
| Ocean County | D | 35th |
| Salem County | D | 35th |
| Gloucester County | D | 39th |
FAQ
How often does power go out in Monmouth County?
Between 2015 and 2025, Monmouth County recorded 3,357 outage events, averaging 2.5 hours each.
What is Monmouth County's reliability grade?
Monmouth County has a Reliability Grade of D, in the 26th national percentile.
What was the worst power outage in Monmouth County?
The worst outage on record started August 4, 2020 (Hurricane Isaias), lasting 154 hours and affecting up to 202,864 customers.