View History:    Monthly     Annual   
Download Data (XLS File)
Illinois Working Natural Gas Underground Storage Capacity  (Million Cubic Feet)
Illinois Working Natural Gas Underground Storage Capacity (Million Cubic Feet)
Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9
  2000's 296,318 303,761
  2010's 303,500 302,385 302,962 303,312 304,312 303,613 303,613 303,613 303,613 303,613
  2020's 303,613 303,613 303,813


- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 3/29/2024
Next Release Date: 4/30/2024

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