Middlesex County Power Outage History
2014–2025 · New Jersey
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 |
|---|---|---|---|
| Aug 4, 2020 | 139 hrs | 100,804 (25%) | Hurricane Isaias |
| Jul 25, 2016 | 6 hrs | 50,123 (12%) | Thunderstorm Wind |
| Mar 7, 2018 | 120 hrs | 26,861 (7%) | High Wind |
| Jul 23, 2019 | 32 hrs | 23,376 (6%) | Hurricane Barry |
| Aug 13, 2016 | 5 hrs | 22,450 (6%) | Unnamed event |
Over the 12 years from 2014 to 2025, Middlesex County recorded 3,686 distinct power outage events, averaging 1.5 hours per event.
The single worst outage on record in Middlesex County started August 4, 2020 (Hurricane Isaias), lasting 139 hours and leaving up to 100,804 customers without power (25% of the county) at its peak.
July has historically been the worst month for outages in Middlesex County, with 403 events recorded during that month across the dataset.
Based on this history, Middlesex County earns a Reliability Grade of B, placing it in the 69th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Middlesex County's outage profile
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Similar counties in New Jersey
Counties with the closest reliability grade and national percentile to Middlesex County.
| County | Grade | National percentile |
|---|---|---|
| Cumberland County | B | 71st |
| Atlantic County | B | 67th |
| Essex County | B | 63rd |
| Mercer County | B | 62nd |
| Union County | C | 60th |
FAQ
How often does power go out in Middlesex County?
Between 2014 and 2025, Middlesex County recorded 3,686 outage events, averaging 1.5 hours each.
What is Middlesex County's reliability grade?
Middlesex County has a Reliability Grade of B, in the 69th national percentile.
What was the worst power outage in Middlesex County?
The worst outage on record started August 4, 2020 (Hurricane Isaias), lasting 139 hours and affecting up to 100,804 customers.