St. Louis County, Missouri Power Outages, 2015 to 2023

St. Louis County, Missouri had 1 major outage from 2015 to 2023

Lower outage time among US counties

Residents here averaged 0.19 times the US outage time per person and 0.37 times the Missouri rate. It ranks 90 of 108 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

0.1major outages per year

1 of 9years with a major outage

17 hrslongest major outage

Jul, Mayhardest months

July and May made up 37% of this county's outage time. The largest outage on record began May 11, 2016, reached 29,165 customers, and left at least 200 customers out for 17.2 hours.

Outage time per resident, rated Missouri counties

MostLeast

Outage impact by year

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

0.5M

1.5M

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

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	886,822	581	0
2016	1,143,131	788	1
2017	218,534	206	0
2018	669,770	615	0
2019	974,712	740	0
2020	219,282	194	0
2021	33,254	45	0
2022	0	0	0
2023	0	0	0

When outages hit

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

10%

15%

20%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
May 11, 2016	17.2	29,165	248,517
Jul 27, 2015	33.5	7,834	96,849
Jun 2, 2019	22.0	6,385	55,064
May 12, 2016	18.8	8,823	47,409
Aug 12, 2016	25.0	5,087	44,998

Hours measure how long at least 200 customers in the county 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.

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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 county residents.
Records cover outages of at least 200 customers in a county. They do not show what happened on your street.
Utilities that do not report can make a county look better than it is. Data ends in 2023. Read the full method.