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|View History:  Monthly  Annual Download Data (XLS File)                                          
|View History:  Monthly  Annual                                                                    
|View History:  Monthly  Annual                                                                    
|View History:                                                                                     
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|Illinois Price of Natural Gas Delivered to Residential Consumers (Dollars per Thousand Cubic Feet)
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|Illinois Price of Natural Gas Delivered to Residential Consumers (Dollars per Thousand Cubic Feet)
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|Decade                                                                                                                            | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9
|--------------------------------------------------------------------------------------------------------------------------------- | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------
|1960's                                                                                                                            |        |        |        |        |        |        |        | 1.02   | 1.02   | 1.00  
|1970's                                                                                                                            | 1.05   | 1.07   | 1.13   | 1.21   | 1.35   | 1.61   | 1.90   | 2.21   | 2.50   | 3.01  
|1980's                                                                                                                            | 3.61   | 4.05   | 4.73   | 5.46   | 5.37   | 5.55   | 5.07   | 4.81   | 4.60   | 4.92  
|1990's                                                                                                                            | 5.06   | 4.95   | 5.09   | 5.52   | 5.50   | 4.66   | 5.28   | 5.95   | 5.47   | 5.50  
|2000's                                                                                                                            | 7.33   | 9.04   | 6.41   | 8.65   | 9.41   | 11.62  | 11.18  | 10.76  | 12.07  | 8.97  
|2010's                                                                                                                            | 9.39   | 8.78   | 8.26   | 8.20   | 9.59   | 7.97   | 7.88   | 8.83   | 8.15   | 8.04  
|2020's                                                                                                                            | 7.94   | 10.51  | 13.80  | 11.54  |        |        |        |        |        |       
|- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
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|Release Date: 5/31/2024                                                                                                          
|Next Release Date: 6/28/2024