Jefferson County, Illinois Power Outages, 2015 to 2023

Jefferson County, Illinois had 23 major outages from 2015 to 2023

Above middle outage time among US counties

Residents here averaged 1.08 times the US outage time per person and 2.55 times the Illinois rate. It ranks 13 of 95 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

2.6major outages per year

8 of 9years with a major outage

72 hrslongest major outage

Jun, Julhardest months

June and July made up 40% of this county's outage time. The largest outage on record began Jul 1, 2023, reached 1,719 customers, and left at least 200 customers out for 71.8 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.

100K

200K

300K

400K

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

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	48,118	29	2
2016	76,989	31	3
2017	25,382	19	1
2018	231,409	95	6
2019	220,968	110	7
2020	37,748	22	1
2021	71,390	28	0
2022	51,096	25	1
2023	96,826	30	2

When outages hit

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

10%

20%

30%

40%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
Jul 1, 2023	71.8	1,719	47,756
Jun 29, 2018	14.8	5,485	46,688
Feb 16, 2021	5.0	12,259	44,345
Jun 17, 2022	27.8	2,771	33,708
Feb 24, 2019	13.0	4,683	30,518

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.