St. Bernard ParishPower 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 |
|---|---|---|---|
| Aug 29, 2021 | 18 hrs | 20,256 (87%) | Tropical Storm Ida |
| Aug 30, 2021 | 189 hrs | 20,256 (87%) | Tropical Storm Ida |
| Aug 30, 2021 | <1 hr | 20,256 (87%) | Tropical Storm Ida |
| Oct 28, 2020 | 28 hrs | 20,067 (87%) | Hurricane Zeta |
| Oct 30, 2020 | 11 hrs | 19,882 (86%) | Hurricane Zeta |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for St. Bernard Parish, Louisiana that day.
Over the 12 years from 2014 to 2025, St. Bernard Parish recorded 518 distinct power outage events, averaging 3.3 hours per event.
The single worst outage on record in St. Bernard Parish started August 29, 2021 (Tropical Storm Ida), lasting 18 hours and leaving up to 20,256 customers without power (87% of the county) at its peak.
July has historically been the worst month for outages in St. Bernard Parish, with 65 events recorded during that month across the dataset.
Based on this history, St. Bernard Parish earns a Reliability Grade of F, placing it in the 3rd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Louisiana
Counties with the closest reliability grade and national percentile to St. Bernard Parish.
| County | Grade | National percentile |
|---|---|---|
| Orleans Parish | F | 3rd |
| Assumption Parish | F | 3rd |
| Union Parish | F | 3rd |
| Vernon Parish | F | 2nd |
| Ascension Parish | F | 2nd |
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 St. Bernard Parish?
Between 2014 and 2025, St. Bernard Parish recorded 518 outage events, averaging 3.3 hours each.
What is St. Bernard Parish's reliability grade?
St. Bernard Parish has a Reliability Grade of F, in the 3rd national percentile.
What was the worst power outage in St. Bernard Parish?
The worst outage on record started August 29, 2021 (Tropical Storm Ida), lasting 18 hours and affecting up to 20,256 customers.