St. Helena 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 30, 2021 | 456 hrs | 8,648 (99%) | Tropical Storm Ida |
| Feb 20, 2019 | 1 hrs | 6,740 (77%) | Unnamed event |
| Oct 9, 2020 | 92 hrs | 6,685 (77%) | Hurricane Delta |
| Feb 15, 2021 | 77 hrs | 6,146 (70%) | Winter Storm Uri |
| Dec 8, 2023 | 3 hrs | 5,272 (60%) | Drought |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for St. Helena Parish, Louisiana that day.
Over the 12 years from 2014 to 2025, St. Helena Parish recorded 2,468 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in St. Helena Parish started August 30, 2021 (Tropical Storm Ida), lasting 456 hours and leaving up to 8,648 customers without power (99% of the county) at its peak.
July has historically been the worst month for outages in St. Helena Parish, with 291 events recorded during that month across the dataset.
Based on this history, St. Helena Parish earns a Reliability Grade of F, placing it in the 0th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Louisiana
Counties with the closest reliability grade and national percentile to St. Helena Parish.
| County | Grade | National percentile |
|---|---|---|
| St. John the Baptist Parish | F | 0th |
| Lafourche Parish | F | 0th |
| Cameron Parish | F | 0th |
| Beauregard Parish | F | 0th |
| Calcasieu Parish | F | 1st |
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. Helena Parish?
Between 2014 and 2025, St. Helena Parish recorded 2,468 outage events, averaging 2.4 hours each.
What is St. Helena Parish's reliability grade?
St. Helena Parish has a Reliability Grade of F, in the 0th national percentile.
What was the worst power outage in St. Helena Parish?
The worst outage on record started August 30, 2021 (Tropical Storm Ida), lasting 456 hours and affecting up to 8,648 customers.