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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 Natural Gas Price Sold to Electric Power Consumers  (Dollars per Thousand Cubic Feet)
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|Illinois Natural Gas Price Sold to Electric Power Consumers  (Dollars per Thousand Cubic Feet)
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|Year                                                                                                                              | Jan   | Feb  | Mar   | Apr   | May   | Jun   | Jul   | Aug  | Sep   | Oct   | Nov   | Dec  
|--------------------------------------------------------------------------------------------------------------------------------- | ----- | ---- | ----- | ----- | ----- | ----- | ----- | ---- | ----- | ----- | ----- | -----
|2002                                                                                                                              | 2.81  | 2.69 | 3.45  | 3.36  | 3.86  | 3.62  | 3.23  | 3.44 | 3.81  | 4.05  | 4.76  | 5.64 
|2003                                                                                                                              | 5.72  | 6.71 | 7.56  | 6.68  | W     | 6.48  | 5.82  | 5.65 | 6.24  | 4.99  | 5.04  | 5.92 
|2004                                                                                                                              | 6.60  | 6.20 | 6.02  | 6.26  | 6.62  | 7.06  | 6.74  | 6.37 | 6.18  | 6.35  | 7.57  | 7.84 
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|2005                                                                                                                              | 6.88  | 6.88 | 7.47  | 7.45  | 7.26  | 7.54  | 8.36  | 9.16 | 11.79 | 12.99 | 11.13 | 13.88
|2006                                                                                                                              | 9.60  | 8.64 | 7.35  | 7.18  | 6.63  | 6.81  | 6.65  | 7.85 | 6.12  | 5.59  | 7.62  | 8.23 
|2007                                                                                                                              | 7.15  | 8.60 | 7.63  | 7.87  | 7.92  | 7.85  | 6.76  | 6.64 | 6.28  | 7.10  | 7.46  | 7.82 
|2008                                                                                                                              | 8.80  | 9.07 | 10.52 | 10.70 | 11.28 | 12.59 | 12.35 | 9.49 | 8.44  | 7.63  | 6.93  | 6.84 
|2009                                                                                                                              | 6.22  | 5.24 | 4.97  | 4.03  | 4.04  | 4.58  | 4.45  | 4.19 | 3.89  | 4.90  | W     | 5.90 
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|2010                                                                                                                              | 6.94  | 6.15 | 5.59  | W     | 4.90  | 5.51  | 5.15  | 4.93 | 4.90  | 4.27  | 4.46  | 4.93 
|2011                                                                                                                              | 5.22  | 4.81 | W     | 4.88  | 4.91  | 5.60  | 4.98  | 4.81 | 5.10  | 4.28  | W     | W    
|2012                                                                                                                              | 3.46  | W    | W     | 2.51  | W     | 3.25  | 3.34  | W    | 3.87  | W     | W     | W    
|2013                                                                                                                              | 4.53  | 6.11 | 4.43  | W     | 4.96  | W     | 4.65  | 4.78 | 4.39  | 4.68  | 4.84  | 5.71 
|2014                                                                                                                              | 15.05 | W    | W     | W     | 5.28  | 5.24  | W     | W    | W     | 4.17  | W     | W    
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|2015                                                                                                                              | W     | 4.81 | W     | W     | W     | 3.04  | W     | W    | 3.12  | W     | W     | W    
|2016                                                                                                                              | W     | W    | 2.31  | 2.24  | 2.25  | W     | 3.06  | 3.07 | 3.29  | 3.18  | W     | W    
|2017                                                                                                                              | W     | W    | 3.13  | 3.37  | W     | 3.26  | 3.45  | W    | W     | W     | W     | W    
|2018                                                                                                                              | 5.11  | W    | W     | 3.12  | 3.30  | 3.02  | 3.21  | 3.28 | 3.23  | 3.66  | 4.21  | 4.58 
|2019                                                                                                                              | 4.93  | 3.45 | 4.48  | 3.06  | 3.18  | 2.92  | 2.73  | 2.65 | W     | W     | W     | W    
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|2020                                                                                                                              | W     | W    | W     | W     | W     | 1.84  | 2.01  | 2.38 | W     | W     | W     | W    
|2021                                                                                                                              | 2.52  | 7.77 | 2.51  | 2.89  | 3.04  | 3.67  | 4.18  | 4.42 | 5.31  | 5.60  | W     | 3.81 
|2022                                                                                                                              | W     | W    | W     | W     | 8.28  | 7.65  | 7.13  | 8.63 | W     | W     | W     | 7.89 
|2023                                                                                                                              | W     | W    | W     | 2.20  | W     | W     | 2.53  | 2.55 | W     | W     | W     | W    
|2024                                                                                                                              | 6.74  | 1.74 | W     |       |       |       |       |      |       |       |       |      
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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