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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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|Montana Natural Gas Underground Storage Capacity  (Million Cubic Feet)
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|Montana Natural Gas Underground Storage Capacity  (Million Cubic Feet)
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|Year                                                                                                                              | Jan     | Feb     | Mar     | Apr     | May     | Jun     | Jul     | Aug     | Sep     | Oct     | Nov     | Dec    
|--------------------------------------------------------------------------------------------------------------------------------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | -------
|2002                                                                                                                              | 371,510 | 371,510 | 371,510 | 371,510 | 371,510 | 371,510 | 371,510 | 371,510 | 371,510 | 371,510 | 374,125 | 374,125
|2003                                                                                                                              | 374,125 | 374,125 | 374,125 | 374,125 | 374,125 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201
|2004                                                                                                                              | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201
|                                                                                                                                 
|2005                                                                                                                              | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201
|2006                                                                                                                              | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201
|2007                                                                                                                              | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201
|2008                                                                                                                              | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201
|2009                                                                                                                              | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 376,301
|                                                                                                                                 
|2010                                                                                                                              | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301
|2011                                                                                                                              | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301
|2012                                                                                                                              | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301
|2013                                                                                                                              | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301
|2014                                                                                                                              | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301
|                                                                                                                                 
|2015                                                                                                                              | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301
|2016                                                                                                                              | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301
|2017                                                                                                                              | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225
|2018                                                                                                                              | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225
|2019                                                                                                                              | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225
|                                                                                                                                 
|2020                                                                                                                              | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225
|2021                                                                                                                              | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225
|2022                                                                                                                              | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225
|2023                                                                                                                              | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 | 376,225
|2024                                                                                                                              | 376,225 | 376,225 | 376,225 | 376,225 | 376,225 |         |         |         |         |         |         |        
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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