Grundy County, Illinois Power Outages, 2015 to 2023

Grundy County, Illinois had 15 major outages from 2015 to 2023

Below middle outage time among US counties

Residents here averaged 0.50 times the US outage time per person and 1.18 times the Illinois rate. It ranks 50 of 95 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

1.7major outages per year

6 of 9years with a major outage

43 hrslongest major outage

Aug, Junhardest months

August and June made up 66% of this county's outage time. The largest outage on record began Aug 11, 2020, reached 3,704 customers, and left at least 200 customers out for 43.2 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.

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	124,895	50	2
2016	7,912	13	0
2017	17,674	17	0
2018	43,013	29	2
2019	49,212	31	2
2020	245,441	26	6
2021	62,151	24	2
2022	6,130	13	0
2023	34,644	12	1

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
Aug 11, 2020	43.2	3,704	115,703
Jun 23, 2015	21.5	2,831	41,146
Aug 11, 2020	10.8	3,817	39,177
Aug 10, 2020	12.0	3,601	31,671
Sep 7, 2021	20.8	5,173	29,133

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.