Union 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 |
|---|---|---|---|
| Aug 27, 2020 | 246 hrs | 13,543 (98%) | Hurricane Laura |
| Jul 16, 2023 | 49 hrs | 8,002 (58%) | Heat |
| Jun 18, 2023 | 57 hrs | 6,672 (48%) | Hail |
| Mar 19, 2023 | 4 hrs | 6,436 (46%) | Unnamed event |
| Apr 9, 2024 | 70 hrs | 6,059 (44%) | Unnamed event |
Over the 12 years from 2014 to 2025, Union Parish recorded 1,573 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in Union Parish started August 27, 2020 (Hurricane Laura), lasting 246 hours and leaving up to 13,543 customers without power (98% of the county) at its peak.
April has historically been the worst month for outages in Union Parish, with 172 events recorded during that month across the dataset.
Based on this history, Union 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 Union Parish.
| County | Grade | National percentile |
|---|---|---|
| Assumption Parish | F | 3rd |
| St. Bernard Parish | F | 3rd |
| Vernon Parish | F | 2nd |
| Orleans Parish | F | 3rd |
| Ascension Parish | F | 2nd |
FAQ
How often does power go out in Union Parish?
Between 2014 and 2025, Union Parish recorded 1,573 outage events, averaging 3.0 hours each.
What is Union Parish's reliability grade?
Union Parish has a Reliability Grade of F, in the 3rd national percentile.
What was the worst power outage in Union Parish?
The worst outage on record started August 27, 2020 (Hurricane Laura), lasting 246 hours and affecting up to 13,543 customers.