massoutage

2017 Illinois Power Outage Report

In 2017, the average Illinois customer went without power for about 1.4 hours — the 44th worst of any US state that year, below the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
1.4
Peak customers out
22,361
Rank (worst state)
44th
Counties affected
20

Illinois outages over the decade

Average hours without power per customer, 2017 highlighted.

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

Hardest-hit Illinois counties in 2017

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

1Cook County22,3612Will County17,7693DuPage County14,4754Winnebago County14,3245McHenry County10,5466LaSalle County9,8607Lake County9,2888Kane County9,0179Morgan County6,22710Rock Island County6,09511Vermilion County6,02212Randolph County5,66713Jackson County5,57714Kendall County5,17115Stephenson County5,08016Piatt County4,81217Williamson County4,64718DeKalb County4,52019St. Clair County4,25820Adams County4,181

Biggest Illinois outages of 2017

CountyBeganPeak customers out
Cook CountyMay 17, 201722,361
Cook CountyOctober 5, 201718,135
Will CountyJuly 23, 201717,769
Cook CountyMarch 8, 201716,053
DuPage CountyJuly 21, 201714,475
Winnebago CountyJune 28, 201714,324
Cook CountyJuly 17, 201713,339
Cook CountyJuly 5, 201712,945
Cook CountyJuly 10, 201712,795
Winnebago CountyJuly 19, 201711,027
Illinois by year:20252024202320222021202020192018
Other states in 2017:FLMEWVNHGARI

Part of the 2017 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.