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2024 Illinois Power Outage Report

In 2024, the average Illinois customer went without power for about 3.0 hours — the 40th worst of any US state that year, 1.2× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
3.0
Peak customers out
155,204
Rank (worst state)
40th
Counties affected
20

Illinois outages over the decade

Average hours without power per customer, 2024 highlighted.

2.3h20151.5h20161.4h20172.5h20181.8h20195.9h20202.3h20211.6h20224.0h20233.0h20242.5h2025

Hardest-hit Illinois counties in 2024

By peak customers out during the year's worst event.

1Cook County155,2042Will County62,4983Lake County23,6704DuPage County17,0645Winnebago County17,0556Rock Island County15,8557Kankakee County12,8628Tazewell County12,1139Madison County9,74410Champaign County9,62211Franklin County9,28012Peoria County8,93013Williamson County8,67014Marion County8,51315Kane County8,09016McLean County8,01617Livingston County7,97518Lee County7,85919Grundy County7,74820Sangamon County7,341

Biggest Illinois outages of 2024

CountyBeganPeak customers out
Cook CountyJuly 5, 2024155,204
Cook CountyJanuary 8, 202473,699
Will CountyJuly 13, 202462,498
Cook CountyJanuary 29, 202446,457
Cook CountyAugust 27, 202425,860
Lake CountyAugust 27, 202423,670
DuPage CountyJuly 14, 202417,064
Winnebago CountyJuly 14, 202417,055
Rock Island CountyJuly 15, 202415,855
Kankakee CountyJuly 16, 202412,862
Illinois by year:20252023202220212020201920182017
Other states in 2024:NCSCMEGATXFL

Part of the 2024 US Power Outage Report. Source: DOE/ORNL EAGLE-I. “Avg hours per customer” is a SAIDI-like measure (outage customer-minutes ÷ tracked customers); coverage varies by year.