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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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|Pennsylvania Natural Gas Underground Storage Capacity  (Million Cubic Feet)
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|Pennsylvania 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                                                                                                                              | 713,818 | 713,818 | 713,818 | 713,818 | 713,818 | 713,818 | 950,148 | 950,148 | 950,148 | 950,148 | 950,148 | 950,148
|2003                                                                                                                              | 950,148 | 950,148 | 950,148 | 950,148 | 950,148 | 714,417 | 714,417 | 714,417 | 714,417 | 714,417 | 714,217 | 714,097
|2004                                                                                                                              | 712,687 | 712,292 | 712,292 | 709,946 | 709,946 | 709,946 | 709,946 | 709,826 | 721,019 | 748,874 | 748,874 | 748,338
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|2005                                                                                                                              | 748,338 | 748,338 | 748,338 | 748,338 | 748,338 | 748,338 | 748,338 | 748,338 | 748,338 | 748,338 | 748,338 | 748,338
|2006                                                                                                                              | 748,338 | 748,338 | 748,338 | 748,338 | 748,338 | 748,338 | 748,338 | 748,338 | 748,338 | 748,792 | 748,792 | 748,792
|2007                                                                                                                              | 754,192 | 748,792 | 754,192 | 748,792 | 748,792 | 748,792 | 748,792 | 748,792 | 755,454 | 755,454 | 755,454 | 755,454
|2008                                                                                                                              | 755,454 | 755,454 | 755,454 | 755,454 | 755,454 | 755,454 | 755,454 | 755,454 | 755,454 | 755,454 | 759,365 | 759,365
|2009                                                                                                                              | 759,365 | 759,365 | 759,365 | 777,065 | 777,065 | 777,065 | 777,065 | 777,065 | 777,065 | 777,065 | 777,065 | 776,964
|                                                                                                                                 
|2010                                                                                                                              | 776,964 | 776,964 | 776,964 | 776,964 | 776,964 | 776,964 | 776,964 | 776,964 | 776,964 | 776,964 | 776,964 | 776,964
|2011                                                                                                                              | 776,964 | 776,964 | 776,964 | 776,964 | 776,964 | 776,964 | 776,964 | 776,964 | 776,964 | 776,822 | 776,949 | 776,949
|2012                                                                                                                              | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309
|2013                                                                                                                              | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309
|2014                                                                                                                              | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309 | 774,309
|                                                                                                                                 
|2015                                                                                                                              | 771,422 | 771,422 | 771,422 | 771,422 | 771,422 | 771,422 | 771,422 | 771,422 | 771,422 | 771,422 | 771,422 | 771,422
|2016                                                                                                                              | 771,422 | 771,422 | 760,619 | 760,619 | 760,619 | 760,619 | 760,619 | 760,619 | 760,619 | 760,619 | 760,619 | 760,619
|2017                                                                                                                              | 760,619 | 760,619 | 760,619 | 760,619 | 760,619 | 760,619 | 760,619 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296
|2018                                                                                                                              | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296
|2019                                                                                                                              | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296
|                                                                                                                                 
|2020                                                                                                                              | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296
|2021                                                                                                                              | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296
|2022                                                                                                                              | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,306 | 763,306 | 763,306
|2023                                                                                                                              | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 | 763,296
|2024                                                                                                                              | 763,296 | 763,296 | 763,296 | 763,296 | 763,296 |         |         |         |         |         |         |        
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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