Terrebonne 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 30, 2021 | 195 hrs | 27,666 (58%) | Tropical Storm Ida |
| Aug 29, 2021 | 18 hrs | 27,224 (57%) | Tropical Storm Ida |
| Aug 29, 2021 | 8 hrs | 27,207 (57%) | Tropical Storm Ida |
| Sep 7, 2021 | 492 hrs | 27,188 (57%) | Unnamed event |
| Aug 30, 2021 | 1 hrs | 27,147 (57%) | Tropical Storm Ida |
Over the 12 years from 2014 to 2025, Terrebonne Parish recorded 900 distinct power outage events, averaging 4.3 hours per event.
The single worst outage on record in Terrebonne Parish started August 30, 2021 (Tropical Storm Ida), lasting 195 hours and leaving up to 27,666 customers without power (58% of the county) at its peak.
July has historically been the worst month for outages in Terrebonne Parish, with 101 events recorded during that month across the dataset.
Based on this history, Terrebonne Parish earns a Reliability Grade of F, placing it in the 1st percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Terrebonne Parish's outage profile
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Similar counties in Louisiana
Counties with the closest reliability grade and national percentile to Terrebonne Parish.
| County | Grade | National percentile |
|---|---|---|
| Sabine Parish | F | 1st |
| St. Charles Parish | F | 1st |
| Plaquemines Parish | F | 1st |
| Red River Parish | F | 1st |
| St. James Parish | F | 1st |
FAQ
How often does power go out in Terrebonne Parish?
Between 2014 and 2025, Terrebonne Parish recorded 900 outage events, averaging 4.3 hours each.
What is Terrebonne Parish's reliability grade?
Terrebonne Parish has a Reliability Grade of F, in the 1st national percentile.
What was the worst power outage in Terrebonne Parish?
The worst outage on record started August 30, 2021 (Tropical Storm Ida), lasting 195 hours and affecting up to 27,666 customers.