Henry County power outages

Illinois outage history from 2015 to 2023, with the largest outages and a backup battery estimate.

Henry County, Illinois had 10 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 1.81 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.

1.1major outages per year
5 of 9years with a major outage
113 hrslongest major outage
Aug, Dechardest months

August and December made up 51% of this county's outage time. The largest outage on record began Aug 10, 2020, reached 6,594 customers, and left at least 200 customers out for 113.2 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
100K
200K
300K
400K
2015'152016'162017'172018'182019'192020'202021'212022'222023'23
Show yearly numbers
YearCustomer-hoursReported outagesMajor outages
2015122,901232
201623,69490
201714,232160
201812,16291
201954,330322
2020359,799353
202167,198360
202241,598360
2023116,313332

When outages hit

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

0%
10%
20%
30%
40%
JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start dateHoursPeak customersCustomer-hours
Aug 10, 2020113.26,594275,620
Dec 28, 201544.22,28662,303
Mar 31, 202331.25,31256,634
Apr 4, 202317.22,38130,588
Jul 12, 202016.53,84627,273

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.

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 county

Counties ranked nearby

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.