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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 Heat Content of Natural Gas Deliveries to Consumers  (BTU per Cubic Foot)
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|Illinois Heat Content of Natural Gas Deliveries to Consumers  (BTU per Cubic Foot)
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|Year                                                                                                                              | Jan   | Feb   | Mar   | Apr   | May   | Jun   | Jul   | Aug   | Sep   | Oct   | Nov   | Dec  
|--------------------------------------------------------------------------------------------------------------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- | -----
|2013                                                                                                                              | 1,013 | 1,013 | 1,014 | 1,015 | 1,015 | 1,014 | 1,015 | 1,015 | 1,016 | 1,017 | 1,019 | 1,018
|2014                                                                                                                              | 1,020 | 1,020 | 1,020 | 1,020 | 1,020 | 1,020 | 1,022 | 1,020 | 1,021 | 1,021 | 1,023 | 1,024
|                                                                                                                                 
|2015                                                                                                                              | 1,027 | 1,030 | 1,029 | 1,028 | 1,029 | 1,027 | 1,027 | 1,027 | 1,028 | 1,028 | 1,030 | 1,030
|2016                                                                                                                              | 1,031 | 1,031 | 1,030 | 1,032 | 1,032 | 1,027 | 1,029 | 1,030 | 1,028 | 1,029 | 1,031 | 1,033
|2017                                                                                                                              | 1,033 | 1,031 | 1,030 | 1,030 | 1,028 | 1,027 | 1,027 | 1,027 | 1,027 | 1,030 | 1,032 | 1,031
|2018                                                                                                                              | 1,032 | 1,033 | 1,031 | 1,032 | 1,029 | 1,026 | 1,027 | 1,024 | 1,025 | 1,027 | 1,030 | 1,034
|2019                                                                                                                              | 1,035 | 1,034 | 1,033 | 1,032 | 1,032 | 1,032 | 1,033 | 1,034 | 1,036 | 1,038 | 1,041 | 1,041
|                                                                                                                                 
|2020                                                                                                                              | 1,041 | 1,041 | 1,041 | 1,042 | 1,040 | 1,040 | 1,036 | 1,038 | 1,034 | 1,039 | 1,041 | 1,042
|2021                                                                                                                              | 1,043 | 1,044 | 1,043 | 1,043 | 1,042 | 1,039 | 1,037 | 1,036 | 1,041 | 1,044 | 1,043 | 1,042
|2022                                                                                                                              | 1,043 | 1,043 | 1,042 | 1,042 | 1,045 | 1,042 | 1,042 | 1,042 | 1,044 | 1,048 | 1,045 | 1,045
|2023                                                                                                                              | 1,045 | 1,043 | 1,042 | 1,041 | 1,042 | 1,040 | 1,044 | 1,043 | 1,041 | 1,045 | 1,043 | 1,042
|2024                                                                                                                              | 1,045 | 1,045 | 1,046 | 1,042 |       |       |       |       |       |       |       |      
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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: 6/28/2024                                                                                                          
|Next Release Date: 7/31/2024