Assumption Parish Power Outage History
2014–2025 · Louisiana
Bottom 20% least reliable nationally — frequent and/or long outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 12, 2019 | 111 hrs | 12,744 (89%) | Hurricane Barry |
| Aug 29, 2021 | 18 hrs | 10,044 (70%) | Tropical Storm Ida |
| Aug 30, 2021 | 1 hrs | 10,017 (70%) | Tropical Storm Ida |
| Aug 30, 2021 | 195 hrs | 10,017 (70%) | Tropical Storm Ida |
| Sep 11, 2024 | 84 hrs | 9,981 (70%) | Hurricane Francine |
Over the 12 years from 2014 to 2025, Assumption Parish recorded 835 distinct power outage events, averaging 3.5 hours per event.
The single worst outage on record in Assumption Parish started July 12, 2019 (Hurricane Barry), lasting 111 hours and leaving up to 12,744 customers without power (89% of the county) at its peak.
May has historically been the worst month for outages in Assumption Parish, with 97 events recorded during that month across the dataset.
Based on this history, Assumption Parish earns a Reliability Grade of F, placing it in the 3rd percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Louisiana
Counties with the closest reliability grade and national percentile to Assumption Parish.
| County | Grade | National percentile |
|---|---|---|
| Union Parish | F | 3rd |
| St. Bernard Parish | F | 3rd |
| Orleans Parish | F | 3rd |
| Vernon Parish | F | 2nd |
| Ascension Parish | F | 2nd |
FAQ
How often does power go out in Assumption Parish?
Between 2014 and 2025, Assumption Parish recorded 835 outage events, averaging 3.5 hours each.
What is Assumption Parish's reliability grade?
Assumption Parish has a Reliability Grade of F, in the 3rd national percentile.
What was the worst power outage in Assumption Parish?
The worst outage on record started July 12, 2019 (Hurricane Barry), lasting 111 hours and affecting up to 12,744 customers.