St. Clair County, Illinois Power Outages, 2015 to 2023

St. Clair County, Illinois had 22 major outages from 2015 to 2023

Below middle outage time among US counties

Residents here averaged 0.77 times the US outage time per person and 1.82 times the Illinois rate. It ranks 31 of 95 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

2.4major outages per year

8 of 9years with a major outage

115 hrslongest major outage

Jul, Junhardest months

July and June made up 71% of this county's outage time. The largest outage on record began Jul 13, 2016, reached 40,861 customers, and left at least 200 customers out for 54.8 hours.

Outage time per resident, rated Illinois 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	236,577	89	1
2016	1,264,899	81	4
2017	45,582	41	0
2018	697,190	82	4
2019	148,438	90	1
2020	297,640	88	3
2021	295,357	108	3
2022	186,116	86	3
2023	1,082,366	96	3

When outages hit

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

20%

40%

60%

80%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
Jul 13, 2016	54.8	40,861	1,035,937
Jul 1, 2023	115.0	13,156	637,363
Jun 28, 2018	15.8	28,750	314,423
Jul 29, 2023	48.8	8,463	166,586
Jun 26, 2015	26.2	14,467	135,182

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.