St. Mary Parish, Louisiana Power Outages, 2015 to 2023

St. Mary Parish, Louisiana had 7 major outages from 2015 to 2023

Above middle outage time among US counties

Residents here averaged 1.59 times the US outage time per person and 0.31 times the Louisiana rate. It ranks 56 of 61 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

0.8major outages per year

3 of 9years with a major outage

71 hrslongest major outage

Jul, Aughardest months

July and August made up 67% of this parish's outage time. The largest outage on record began Jul 13, 2019, reached 17,613 customers, and left at least 200 customers out for 71.0 hours.

Outage time per resident, rated Louisiana parishes

MostLeast

Outage impact by year

Customer-hours without power. 1,000 customers out for 2 hours is 2,000 customer-hours.

0.25M

0.5M

0.75M

2015'152016'162017'172018'182019'192020'202021'212022'222023'23

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	31,495	58	0
2016	59,158	67	0
2017	61,235	53	0
2018	44,517	51	0
2019	857,275	59	2
2020	270,680	48	2
2021	206,400	63	3
2022	50,172	50	0
2023	60,570	58	0

When outages hit

Share of this parish's customer-hours by month.

20%

40%

60%

80%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
Jul 13, 2019	71.0	17,613	773,098
Oct 9, 2020	51.2	7,154	166,000
Aug 29, 2021	26.5	6,871	137,453
Aug 27, 2020	62.8	2,816	64,405
Jul 16, 2019	25.2	4,280	50,310

Hours measure how long at least 200 customers in the parish were out. Most customers get power back sooner.

Size your backup battery

Start with what you would keep running. Wattages are typical averages, so check your own appliances.

Phones, Wi-Fi, lights, about 60 WRefrigerator, about 60 WChest freezer, about 40 WGas furnace fan, about 160 W

Hours to cover: 24

1,700 Whof battery capacity, allowing for about 15% conversion loss

If anyone relies on medical equipment, plan that with their provider. Run portable fuel generators outdoors only, at least 20 feet from doors, windows and vents. See the outage checklist.

Look up another parish

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How to read this

A major outage lasted at least 8 hours and reached customers equal to at least 1% of parish residents.
Records cover outages of at least 200 customers in a parish. They do not show what happened on your street.
Utilities that do not report can make a parish look better than it is. Data ends in 2023. Read the full method.