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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 Commercial Natural Gas Deliveries in Wisconsin Represented by the Price  (Percent)
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|Percent of Commercial 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 
|--------------------------------------------------------------------------------------------------------------------------------- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- | ----
|1989                                                                                                                              | 94.1 | 94.2 | 94.5 | 94.0 | 92.6 | 87.7 | 86.1 | 84.2 | 84.2 | 84.3 | 91.1 | 95.0
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|1990                                                                                                                              | 91.6 | 91.5 | 91.9 | 91.9 | 90.3 | 86.5 | 83.1 | 82.4 | 82.6 | 87.5 | 90.1 | 93.3
|1991                                                                                                                              | 93.8 | 92.3 | 92.9 | 91.2 | 88.8 | 83.8 | 80.7 | 84.7 | 83.6 | 86.7 | 91.5 | 92.1
|1992                                                                                                                              | 92.7 | 92.1 | 91.6 | 90.0 | 85.8 | 82.3 | 83.3 | 84.1 | 85.2 | 90.7 | 93.4 | 95.1
|1993                                                                                                                              | 95.2 | 96.0 | 95.3 | 93.5 | 92.1 | 90.8 | 89.2 | 88.5 | 90.0 | 92.6 | 95.2 | 96.0
|1994                                                                                                                              | 97.1 | 97.6 | 97.4 | 96.6 | 91.8 | 89.9 | 83.5 | 87.1 | 87.8 | 90.8 | 94.4 | 84.4
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|1995                                                                                                                              | 93.5 | 94.0 | 93.2 | 92.4 | 90.0 | 81.8 | 82.3 | 84.8 | 87.3 | 88.9 | 93.4 | 93.6
|1996                                                                                                                              | 93.9 | 94.8 | 94.0 | 92.0 | 89.9 | 86.1 | 82.1 | 83.8 | 82.4 | 87.1 | 90.9 | 91.8
|1997                                                                                                                              | 89.7 | 88.2 | 88.5 | 83.3 | 77.4 | 60.6 | 67.8 | 55.4 | 62.9 | 69.3 | 85.9 | 83.2
|1998                                                                                                                              | 87.0 | 81.6 | 79.8 | 75.5 | 55.6 | 55.5 | 47.6 | 48.5 | 45.5 | 71.1 | 74.9 | 79.2
|1999                                                                                                                              | 84.7 | 82.5 | 82.2 | 77.6 | 65.4 | 61.6 | 64.4 | 67.8 | 67.1 | 77.0 | 77.3 | 83.0
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|2000                                                                                                                              | 82.8 | 81.4 | 79.7 | 77.2 | 72.4 | 67.2 | 65.0 | 65.8 | 63.2 | 71.3 | 78.4 | 82.4
|2001                                                                                                                              | 82.3 | 81.8 | 74.3 | 76.3 | 69.5 | 68.7 | 69.7 | 57.6 | 61.3 | 73.8 | 76.5 | 84.1
|2002                                                                                                                              | 81.6 | 81.7 | 82.1 | 78.5 | 73.1 | 64.6 | 55.5 | 52.5 | 52.0 | 67.0 | 75.6 | 80.6
|2003                                                                                                                              | 80.6 | 80.6 | 79.9 | 80.4 | 76.8 | 71.4 | 66.8 | 66.6 | 67.5 | 77.1 | 80.3 | 83.4
|2004                                                                                                                              | 83.9 | 83.2 | 81.4 | 77.1 | 72.3 | 68.2 | 69.6 | 64.8 | 65.1 | 76.4 | 80.3 | 82.9
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|2005                                                                                                                              | 84.0 | 82.8 | 81.8 | 80.5 | 75.4 | 72.6 | 70.7 | 70.7 | 61.4 | 71.8 | 75.8 | 80.4
|2006                                                                                                                              | 80.9 | 80.4 | 78.3 | 72.8 | 66.5 | 64.7 | 66.0 | 61.8 | 65.1 | 73.8 | 78.3 | 79.9
|2007                                                                                                                              | 80.0 | 81.4 | 78.8 | 75.3 | 64.5 | 61.1 | 58.0 | 58.3 | 58.3 | 65.6 | 76.1 | 79.8
|2008                                                                                                                              | 82.2 | 81.9 | 80.3 | 75.5 | 65.9 | 61.3 | 58.5 | 57.0 | 57.5 | 68.8 | 77.8 | 81.8
|2009                                                                                                                              | 82.2 | 80.8 | 79.4 | 75.6 | 67.3 | 62.2 | 62.8 | 60.2 | 61.9 | 72.1 | 76.6 | 81.1
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|2010                                                                                                                              | 82.4 | 81.0 | 78.0 | 71.8 | 67.9 | 64.8 | 59.7 | 57.9 | 61.5 | 69.2 | 76.4 | 81.2
|2011                                                                                                                              | 82.0 | 81.4 | 79.0 | 76.4 | 69.8 | 61.0 | 59.3 | 59.5 | 61.5 | 70.6 | 77.0 | 79.7
|2012                                                                                                                              | 80.1 | 80.0 | 75.6 | 72.1 | 62.9 | 58.9 | 58.1 | 59.7 | 60.2 | 71.8 | 76.5 | 79.3
|2013                                                                                                                              | 81.6 | 82.0 | 80.2 | 78.4 | 71.3 | 64.0 | 60.5 | 59.8 | 62.1 | 71.8 | 79.0 | 82.3
|2014                                                                                                                              | 82.5 | 81.5 | 80.3 | 74.8 | 68.0 | 66.0 | 56.8 | 57.6 | 57.5 | 69.6 | 79.7 | 80.4
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|2015                                                                                                                              | 78.5 | 78.6 | 76.0 | 69.8 | 62.6 | 56.4 | 51.0 | 53.4 | 54.3 | 66.0 | 72.1 | 74.9
|2016                                                                                                                              | 79.6 | 76.9 | 73.9 | 72.2 | 58.8 | 57.6 | 48.1 | 49.5 | 51.8 | 62.0 | 70.2 | 77.6
|2017                                                                                                                              | 79.0 | 76.8 | 75.2 | 69.9 | 62.1 | 55.7 | 52.9 | 52.4 | 52.2 | 63.6 | 75.0 | 78.3
|2018                                                                                                                              | 80.1 | 78.7 | 75.9 | 74.1 | 61.6 | 53.3 | 51.5 | 48.1 | 53.5 | 67.1 | 75.3 | 78.6
|2019                                                                                                                              | 79.0 | 79.4 | 78.1 | 71.4 | 63.9 | 58.1 | 48.6 | 52.8 | 55.1 | 66.3 | 76.4 | 78.3
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|2020                                                                                                                              | 78.2 | 78.3 | 75.2 | 71.2 | 63.9 | 53.6 | 47.1 | 50.6 | 57.8 | 65.9 | 72.6 | 76.2
|2021                                                                                                                              | 75.6 | 76.7 | 65.4 | 60.2 | 49.0 | 41.5 | 41.5 | 36.8 | 44.9 | 49.0 | 66.4 | 70.3
|2022                                                                                                                              | 75.6 | 71.9 | 68.4 | 61.4 | 48.9 | 35.5 | 41.4 | 36.1 | 42.7 | 58.4 | 67.3 | 71.8
|2023                                                                                                                              | 72.7 | 70.2 | 67.4 | 64.7 | 43.8 | 38.0 | 38.9 | 36.2 | 32.6 | 55.8 | 66.5 | 66.1
|2024                                                                                                                              | 71.7 | 67.4 | 64.3 | 58.3 | 42.2 |      |      |      |      |      |      |     
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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