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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 Sold to Commercial Consumers (Dollars per Thousand Cubic Feet)
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|Illinois Price of Natural Gas Sold to Commercial Consumers (Dollars per Thousand Cubic Feet)
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|Year                                                                                                                              | Jan   | Feb   | Mar   | Apr   | May   | Jun   | Jul   | Aug   | Sep   | Oct   | Nov   | Dec  
|--------------------------------------------------------------------------------------------------------------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | -----
|1989                                                                                                                              | 4.42  | 4.66  | 4.77  | 4.61  | 4.62  | 4.84  | 5.10  | 5.19  | 4.88  | 4.39  | 4.20  | 4.38 
|                                                                                                                                 
|1990                                                                                                                              | 4.56  | 4.97  | 4.83  | 4.50  | 4.66  | 5.00  | 5.11  | 4.92  | 4.37  | 4.37  | 4.26  | 4.56 
|1991                                                                                                                              | 4.74  | 4.55  | 4.39  | 4.56  | 5.24  | 6.41  | 5.30  | 5.36  | 4.58  | 4.31  | 4.16  | 4.23 
|1992                                                                                                                              | 4.44  | 4.52  | 4.11  | 4.02  | 4.80  | 5.94  | 5.48  | 5.31  | 5.28  | 4.89  | 4.93  | 4.88 
|1993                                                                                                                              | 4.89  | 4.81  | 4.63  | 5.24  | 5.99  | 6.78  | 5.99  | 6.53  | 5.80  | 5.49  | 5.00  | 5.03 
|1994                                                                                                                              | 5.01  | 5.04  | 5.28  | 5.74  | 6.07  | 6.12  | 6.44  | 6.20  | 5.77  | 4.81  | 4.33  | 4.63 
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|1995                                                                                                                              | 4.39  | 4.44  | 4.53  | 4.42  | 5.16  | 5.16  | 5.35  | 5.01  | 5.23  | 4.23  | 4.11  | 4.00 
|1996                                                                                                                              | 4.07  | 4.31  | 4.75  | 5.00  | 6.19  | 6.68  | 7.09  | 7.66  | 6.25  | 5.23  | 4.83  | 5.20 
|1997                                                                                                                              | 5.87  | 5.66  | 4.95  | 4.62  | 4.91  | 5.53  | 5.66  | 6.08  | 6.22  | 5.79  | 5.26  | 5.21 
|1998                                                                                                                              | 4.76  | 4.68  | 4.72  | 5.26  | 6.84  | 6.25  | 8.18  | 6.41  | 6.10  | 5.32  | 4.88  | 4.69 
|1999                                                                                                                              | 4.43  | 4.45  | 4.40  | 4.79  | 6.50  | 7.07  | 7.87  | 8.43  | 7.15  | 6.28  | 6.12  | 5.34 
|                                                                                                                                 
|2000                                                                                                                              | 4.92  | 5.05  | 5.38  | 5.89  | 7.59  | 10.33 | 9.92  | 9.29  | 9.06  | 9.50  | 8.42  | 8.63 
|2001                                                                                                                              | 11.13 | 10.76 | 9.02  | 8.53  | 8.78  | 9.04  | 7.41  | 7.54  | 6.30  | 4.80  | 5.49  | 5.15 
|2002                                                                                                                              | 6.21  | 6.16  | 6.40  | 6.76  | 8.87  | 10.74 | 10.38 | 9.90  | 9.33  | 8.31  | 8.35  | 8.14 
|2003                                                                                                                              | 7.00  | 7.21  | 9.50  | 9.20  | 9.77  | 11.05 | 10.85 | 10.12 | 9.12  | 8.38  | 8.24  | 7.84 
|2004                                                                                                                              | 8.53  | 8.26  | 8.15  | 8.94  | 10.42 | 10.95 | 12.07 | 11.29 | 10.62 | 9.30  | 9.84  | 9.42 
|                                                                                                                                 
|2005                                                                                                                              | 9.34  | 9.15  | 8.81  | 10.38 | 11.49 | 11.92 | 12.30 | 12.90 | 13.73 | 14.29 | 14.54 | 13.82
|2006                                                                                                                              | 13.35 | 12.37 | 10.59 | 9.85  | 10.42 | 10.31 | 11.10 | 11.17 | 10.54 | 9.09  | 8.87  | 9.72 
|2007                                                                                                                              | 9.68  | 9.80  | 10.07 | 10.84 | 11.20 | 12.49 | 13.41 | 12.99 | 11.79 | 10.95 | 10.42 | 9.77 
|2008                                                                                                                              | 9.54  | 10.15 | 11.14 | 12.16 | 14.36 | 16.78 | 18.76 | 18.66 | 16.19 | 13.89 | 12.27 | 10.66
|2009                                                                                                                              | 9.54  | 9.15  | 8.15  | 7.29  | 8.75  | 9.80  | 10.60 | 11.23 | 10.34 | 8.25  | 8.10  | 7.28 
|                                                                                                                                 
|2010                                                                                                                              | 8.07  | 8.65  | 8.89  | 9.30  | 10.16 | 11.32 | 12.81 | 12.31 | 11.73 | 9.55  | 8.03  | 7.22 
|2011                                                                                                                              | 7.23  | 7.40  | 7.72  | 8.13  | 9.21  | 11.58 | 12.78 | 12.85 | 11.51 | 9.60  | 8.37  | 7.68 
|2012                                                                                                                              | 6.92  | 6.53  | 7.78  | 7.63  | 10.35 | 10.62 | 12.04 | 11.80 | 10.03 | 8.29  | 7.50  | 7.27 
|2013                                                                                                                              | 6.82  | 6.68  | 6.99  | 8.20  | 11.05 | 12.18 | 12.60 | 12.21 | 10.50 | 7.84  | 6.94  | 6.57 
|2014                                                                                                                              | 6.83  | 7.45  | 10.49 | 12.84 | 13.01 | 14.85 | 15.16 | 14.66 | 11.71 | 8.68  | 7.14  | 7.76 
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|2015                                                                                                                              | 6.82  | 6.15  | 6.82  | 7.69  | 10.12 | 11.56 | 11.61 | 12.77 | 12.57 | 8.26  | 6.66  | 6.03 
|2016                                                                                                                              | 5.54  | 5.88  | 6.51  | 6.99  | 9.47  | 10.93 | 12.26 | 12.93 | 12.30 | 9.03  | 8.08  | 6.44 
|2017                                                                                                                              | 6.90  | 7.59  | 7.25  | 9.13  | 11.00 | 12.52 | 12.44 | 13.59 | 12.05 | 7.89  | 6.59  | 6.16 
|2018                                                                                                                              | 6.18  | 6.34  | 6.53  | 6.77  | 10.71 | 12.28 | 14.13 | 13.50 | 12.70 | 8.17  | 6.42  | 6.60 
|2019                                                                                                                              | 6.36  | 6.64  | 6.38  | 7.54  | 9.25  | 11.57 | 12.83 | 12.78 | 12.89 | 7.44  | 5.64  | 5.74 
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|2020                                                                                                                              | 5.61  | 5.57  | 6.09  | 6.70  | 8.33  | 11.49 | 13.95 | 15.12 | 12.99 | 7.61  | 6.96  | 6.01 
|2021                                                                                                                              | 6.00  | 5.79  | 7.67  | 9.84  | 14.32 | 17.93 | 15.22 | 18.96 | 16.19 | 12.42 | 9.25  | 11.02
|2022                                                                                                                              | 9.27  | 9.10  | 10.35 | 11.76 | 16.82 | 21.91 | 24.50 | 24.48 | 21.70 | 17.48 | 14.54 | 11.21
|2023                                                                                                                              | 10.08 | 9.63  | 8.28  | 9.16  | 12.09 | 15.40 | 16.30 | 16.80 | 16.25 | 10.72 | 8.07  | 8.13 
|2024                                                                                                                              | 5.83  | 8.43  | 8.52  |       |       |       |       |       |       |       |       |      
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|- = 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