– 0% of Lafourche out 0 customers out in Louisiana

Power outage history

Lafourche Parish Louisiana

78hours

without power for the average customer in a typical year, 2018–2025

3rd most of 63 in Louisiana 12× the national median

Worst outage on record Hurricane Ida · Aug 29, 2021 100% of customers out · 90% back in 27.0 days

Hours without power, average customer per year 78h / yr State average 27 h · national median 6.6 h

Major outages a year 6.5 Peaks over 10% of customers or 50,000 customers

Typical time to restore 90% 2hours Median across major outages, from the peak

Longest single outage 32.5days Hurricane Ida, over 1% of customers out

Outage hours on storm days 94% Share falling on days with a NOAA storm report here

Worst year 2021 20.5 days without power, average customer

Electricity customers 35,705 ORNL customer model · 8 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Lafourche's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025

0%100% of customers out

Year by year

Hours in the dark, per customer

2021 was the worst well-recorded year, at 20.5 days for the average customer. Hatched years have a thin record and are left out of the averages.

Lafourche, hours without power per customer

LafourcheUS median countyLouisiana average

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began	Storm	Peak out	Share	Lasted	90% restored	Customer-hours
Aug 29, 2021	Hurricane Ida	35,705	100%	32.5 d	27.0 d	17M
Sep 11, 2024	Hurricane Francine	35,705	100%	4.1 d	2.8 d	1.5M
Oct 28, 2020	Hurricane Zeta	16,506	46%	10.9 d	6.9 d	1.2M
Jul 12, 2019	Hurricane Barry	19,407	54%	4.0 d	44 h	411k
Apr 27, 2015	Tornadoes	8,393	24%	3.2 d	3.0 d	275k
May 3, 2017	Thunderstorms	8,260	23%	45 h	33 h	99k
Oct 2, 2021	No storm report	1,999	6%	4.2 d	3.9 d	73k
Oct 15, 2022	No storm report	17,700	50%	4.2 h	4.0 h	49k
Dec 12, 2017	No storm report	19,531	55%	3.2 h	1.0 h	43k
Jan 17, 2018	No storm report	6,339	18%	18 h	2.0 h	41k
Oct 16, 2021	No storm report	5,245	15%	33 h	1.0 h	34k
Dec 12, 2017	No storm report	18,881	53%	4.2 h	4.0 h	32k
Sep 20, 2022	No storm report	3,310	9%	9.2 h	6.5 h	31k
Jul 25, 2015	Thunderstorms	6,913	19%	4.2 h	1.2 h	29k
Apr 15, 2023	Thunderstorms	8,367	23%	11 h	3.0 h	25k
Oct 28, 2021	No storm report	7,501	21%	19 h	6.2 h	25k
Jun 20, 2017	Tropical Storm Cindy	5,274	15%	7.0 h	2.0 h	24k
Dec 31, 2015	No storm report	4,595	13%	5.2 h	1.8 h	23k
Oct 11, 2021	No storm report	8,158	23%	5.0 h	4.0 h	23k
Jul 18, 2021	No storm report	9,444	26%	4.0 h	30 min	20k
Dec 18, 2016	No storm report	5,797	16%	6.2 h	3.8 h	20k
Apr 14, 2022	No storm report	4,803	13%	4.2 h	2.0 h	19k
Apr 17, 2023	No storm report	4,231	12%	4.5 h	4.5 h	19k
Nov 20, 2020	No storm report	2,886	8%	7.0 h	3.2 h	19k
May 28, 2015	No storm report	18,097	51%	2.2 h	1.5 h	19k
Jul 14, 2017	No storm report	6,803	19%	2.8 h	10 h	17k
Sep 23, 2018	No storm report	3,289	9%	5.0 h	9.5 h	16k
May 17, 2019	No storm report	3,888	11%	6.8 h	9.0 h	16k
Oct 21, 2021	No storm report	4,174	12%	5.5 h	3.5 h	16k
Jun 20, 2023	Thunderstorms	4,121	12%	17 h	15 h	15k

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Lafourche from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

Tropical storm 93%
No storm on record 6.3%

Who keeps the lights on

Utilities serving Lafourche

As each utility reports to the Energy Information Administration for its whole Louisiana territory, not this county alone. Outage minutes include major storm days.

Utility	Type	Outage min / yr	Excl. major storms	Outages / yr	Residential ¢/kWh	Customers
Entergy Louisiana LLC	Investor Owned	253	218	1.83	11.9	962k
South Louisiana Elec Coop Assn	Cooperative	176	176	2.43	12.3	17k

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

Lafourche (this county) 78 h
Terrebonne 54 h
Assumption 53 h
St. John the Baptist 52 h
St. Charles 45 h
St. James 42 h
Jefferson 40 h

Across Louisiana

Where it is darkest

Hours / yr64+

All Louisiana counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 35,705 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →