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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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|Percent of Industrial Natural Gas Deliveries in Wisconsin Represented by the Price  (Percent)
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|Percent of Industrial Natural Gas Deliveries in Wisconsin Represented by the Price  (Percent)
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|Year                                                                                                                              | Jan  | Feb  | Mar  | Apr  | May  | Jun  | Jul  | Aug  | Sep  | Oct  | Nov  | Dec 
|--------------------------------------------------------------------------------------------------------------------------------- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ----
|2001                                                                                                                              | 25.3 | 26.6 | 26.1 | 18.3 | 12.5 | 11.2 | 12.3 | 12.4 | 10.9 | 15.9 | 19.9 | 23.0
|2002                                                                                                                              | 25.3 | 23.6 | 25.8 | 21.2 | 18.5 | 14.3 | 11.1 | 13.3 | 14.7 | 20.9 | 24.7 | 28.9
|2003                                                                                                                              | 27.0 | 27.3 | 25.9 | 18.8 | 15.3 | 11.7 | 10.7 | 11.7 | 12.2 | 17.7 | 21.3 | 26.2
|2004                                                                                                                              | 26.4 | 24.1 | 23.9 | 19.3 | 13.5 | 14.1 | 12.9 | 10.4 | 12.4 | 17.6 | 19.6 | 18.6
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|2005                                                                                                                              | 21.7 | 20.9 | 20.8 | 15.9 | 13.4 | 11.2 | 12.3 | 13.2 | 13.9 | 16.4 | 21.9 | 25.1
|2006                                                                                                                              | 21.6 | 21.7 | 23.0 | 13.3 | 14.1 | 13.5 | 11.1 | 12.3 | 13.3 | 18.2 | 22.8 | 24.2
|2007                                                                                                                              | 22.3 | 23.7 | 24.1 | 17.8 | 13.6 | 11.5 | 10.9 | 12.1 | 13.7 | 16.7 | 20.4 | 23.3
|2008                                                                                                                              | 22.6 | 23.2 | 20.6 | 18.5 | 14.4 | 11.9 | 11.7 | 11.6 | 11.9 | 15.0 | 21.2 | 23.9
|2009                                                                                                                              | 24.8 | 24.6 | 20.7 | 16.9 | 12.4 | 9.8  | 9.6  | 9.0  | 9.7  | 16.4 | 20.7 | 24.9
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|2010                                                                                                                              | 25.3 | 23.5 | 19.2 | 13.8 | 12.0 | 9.5  | 9.4  | 10.2 | 11.4 | 15.9 | 21.7 | 22.5
|2011                                                                                                                              | 24.4 | 23.5 | 20.8 | 18.1 | 14.4 | 10.2 | 10.9 | 9.3  | 11.5 | 14.2 | 22.3 | 21.6
|2012                                                                                                                              | 23.8 | 21.6 | 19.3 | 15.7 | 12.1 | 12.1 | 12.5 | 12.2 | 13.7 | 18.3 | 20.3 | 21.0
|2013                                                                                                                              | 22.1 | 21.9 | 19.7 | 19.3 | 14.5 | 12.8 | 11.1 | 12.6 | 13.7 | 17.6 | 22.7 | 25.1
|2014                                                                                                                              | 25.9 | 26.7 | 22.7 | 18.7 | 13.3 | 12.0 | 11.5 | 11.6 | 12.5 | 16.9 | 22.4 | 24.5
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|2015                                                                                                                              | 23.0 | 22.0 | 20.3 | 14.5 | 13.1 | 11.3 | 11.3 | 10.9 | 12.4 | 14.8 | 20.0 | 17.5
|2016                                                                                                                              | 20.0 | 20.2 | 16.6 | 15.1 | 12.0 | 13.0 | 11.5 | 12.1 | 11.8 | 14.9 | 17.0 | 19.7
|2017                                                                                                                              | 21.5 | 18.5 | 17.5 | 14.6 | 12.5 | 10.1 | 13.3 | 11.1 | 10.6 | 15.0 | 18.2 | 22.1
|2018                                                                                                                              | 21.7 | 20.1 | 18.9 | 19.9 | 15.3 | 11.2 | 12.4 | 12.0 | 15.5 | 18.9 | 19.2 | 19.5
|2019                                                                                                                              | 19.0 | 22.1 | 20.6 | 16.4 | 11.6 | 8.6  | 11.5 | 9.1  | 11.4 | 16.6 | 19.0 | 20.7
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|2020                                                                                                                              | 20.2 | 19.0 | 16.6 | 14.2 | 14.1 | 9.1  | 13.7 | 10.3 | 11.4 | 17.8 | 18.8 | 17.6
|2021                                                                                                                              | 20.3 | 20.8 | 17.4 | 12.8 | 9.4  | 7.2  | 9.5  | 10.2 | 12.9 | 16.6 | 18.5 | 20.8
|2022                                                                                                                              | 21.1 | 20.9 | 18.5 | 15.0 | 12.5 | 11.8 | 15.8 | 8.5  | 10.4 | 14.6 | 15.8 | 19.6
|2023                                                                                                                              | 19.4 | 17.4 | 17.7 | 15.0 | 9.0  | 6.9  | 8.3  | 9.8  | 9.1  | 16.5 | 18.1 | 19.0
|2024                                                                                                                              | 20.6 | 18.4 | 18.7 | 13.2 | 9.4  |      |      |      |      |      |      |     
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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: 7/31/2024                                                                                                          
|Next Release Date: 8/30/2024