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|View History: Monthly Download Data (XLS File)                          
|View History: Monthly                                                    
|View History: Monthly                                                    
|View History:                                                            
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|Pennsylvania Natural Gas Underground Storage Volume  (Million Cubic Feet)
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|Pennsylvania Natural Gas Underground Storage Volume  (Million Cubic Feet)
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|Year                                                                                                                              | Jan     | Feb     | Mar     | Apr     | May     | Jun     | Jul     | Aug     | Sep     | Oct     | Nov     | Dec    
|--------------------------------------------------------------------------------------------------------------------------------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | -------
|1990                                                                                                                              | 516,257 | 477,783 | 453,124 | 462,399 | 511,406 |         | 619,401 | 671,431 | 711,942 | 717,828 | 719,002 | 665,421
|1991                                                                                                                              | 543,808 | 501,265 | 471,608 | 482,628 | 527,550 | 545,866 | 569,927 | 607,093 | 651,148 | 669,612 | 658,358 | 627,857
|1992                                                                                                                              | 559,416 | 497,895 | 441,187 | 445,158 | 485,227 | 535,829 | 579,713 | 622,943 | 665,414 | 690,920 | 692,280 | 650,707
|1993                                                                                                                              | 580,189 | 479,149 | 417,953 | 444,095 | 494,680 | 547,289 | 592,762 | 632,195 | 680,452 | 695,718 | 689,050 | 639,761
|1994                                                                                                                              | 532,216 | 455,494 | 434,081 | 475,107 | 527,242 | 583,595 | 634,007 | 677,221 | 700,758 | 716,066 | 696,721 | 656,431
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|1995                                                                                                                              | 590,100 | 497,162 | 469,515 | 481,690 | 525,118 | 578,640 | 611,291 | 648,080 | 695,988 | 713,882 | 669,744 | 594,750
|1996                                                                                                                              | 515,657 | 451,949 | 408,534 | 432,650 | 477,271 | 537,928 | 609,015 | 659,674 | 697,331 | 714,149 | 680,657 | 656,826
|1997                                                                                                                              | 563,415 | 510,924 | 463,137 | 464,322 | 506,599 | 555,726 | 597,740 | 641,183 | 689,852 | 705,795 | 680,004 | 631,094
|1998                                                                                                                              | 573,286 | 524,084 | 485,053 | 519,292 | 578,200 | 618,515 | 651,015 | 670,518 | 698,182 | 716,229 | 718,173 | 676,920
|1999                                                                                                                              | 587,496 | 530,468 | 485,492 | 511,704 | 557,464 | 592,816 | 620,877 | 658,668 | 700,011 | 718,990 | 714,677 | 646,222
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|2000                                                                                                                              | 534,194 | 467,022 | 455,404 | 461,051 | 513,723 | 556,747 | 606,787 | 638,929 | 686,200 | 712,877 | 691,069 | 595,221
|2001                                                                                                                              | 526,040 | 474,344 | 427,137 | 467,663 | 533,220 | 590,513 | 640,937 | 665,619 | 706,684 | 724,662 | 735,884 | 687,630
|2002                                                                                                                              | 625,933 | 562,928 | 516,664 | 533,253 | 575,038 | 622,979 | 650,540 | 675,327 | 712,941 | 712,427 | 702,160 | 627,273
|2003                                                                                                                              | 506,636 | 429,606 | 421,170 | 435,987 | 505,613 | 566,744 | 606,389 | 644,546 | 696,394 | 722,271 | 718,103 | 666,522
|2004                                                                                                                              | 547,718 | 476,136 | 455,944 | 479,453 | 529,840 | 584,139 | 635,122 | 672,537 | 709,884 | 728,031 | 723,171 | 655,874
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|2005                                                                                                                              | 561,369 | 500,721 | 448,893 | 486,359 | 545,052 | 590,129 | 626,413 | 654,798 | 691,803 | 716,642 | 720,686 | 657,160
|2006                                                                                                                              | 633,997 | 562,260 | 529,189 | 564,217 | 606,920 | 646,770 | 657,607 | 688,224 | 720,011 | 710,765 | 719,716 | 691,909
|2007                                                                                                                              | 626,017 | 512,348 | 484,975 | 493,514 | 559,371 | 609,475 | 651,095 | 678,517 | 710,500 | 730,992 | 718,201 | 655,118
|2008                                                                                                                              | 575,918 | 499,849 | 456,994 | 483,993 | 531,226 | 567,287 | 610,724 | 671,528 | 703,666 | 718,822 | 702,102 | 647,062
|2009                                                                                                                              | 538,965 | 486,586 | 464,009 | 503,362 | 570,317 | 625,442 | 667,086 | 704,935 | 735,330 | 742,871 | 744,673 | 678,326
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|2010                                                                                                                              | 590,053 | 519,106 | 512,580 | 549,310 | 591,543 | 621,692 | 649,059 | 682,023 | 714,690 | 741,011 | 734,239 | 651,060
|2011                                                                                                                              | 562,804 | 499,672 | 473,756 | 502,785 | 546,417 | 584,855 | 615,156 | 653,520 | 702,449 | 733,142 | 738,122 | 703,933
|2012                                                                                                                              | 638,772 | 592,801 | 595,683 | 615,011 | 644,767 | 670,137 | 673,629 | 691,699 | 714,711 | 737,369 | 712,333 | 690,884
|2013                                                                                                                              | 628,947 | 556,726 | 499,805 | 520,387 | 567,796 | 613,368 | 634,789 | 656,308 | 693,662 | 712,848 | 693,619 | 638,448
|2014                                                                                                                              | 542,127 | 453,862 | 406,980 | 433,396 | 496,618 | 553,109 | 591,480 | 635,959 | 686,193 | 725,841 | 709,801 | 680,470
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|2015                                                                                                                              | 594,503 | 501,860 | 454,506 | 481,778 | 544,435 | 595,871 | 619,332 | 654,511 | 693,267 | 724,856 | 730,680 | 719,217
|2016                                                                                                                              | 631,239 | 568,813 | 548,803 | 554,403 | 586,415 | 622,878 | 643,972 | 662,723 | 706,023 | 722,884 | 712,392 | 642,777
|2017                                                                                                                              | 560,217 | 505,912 | 435,014 | 468,184 | 519,295 | 564,727 | 601,200 | 648,775 | 682,014 | 713,412 | 692,733 | 631,604
|2018                                                                                                                              | 541,502 | 487,694 | 426,914 | 426,057 | 476,195 | 522,528 | 562,156 | 590,758 | 644,982 | 675,581 | 649,527 | 613,630
|2019                                                                                                                              | 533,516 | 468,260 | 426,749 | 460,418 | 516,023 | 569,410 | 592,404 | 637,336 | 693,041 | 727,470 | 713,633 | 671,407
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|2020                                                                                                                              | 607,857 | 544,002 | 517,967 | 526,859 | 587,243 | 625,710 | 641,118 | 668,110 | 704,039 | 725,201 | 722,131 | 663,972
|2021                                                                                                                              | 579,124 | 499,134 | 475,244 | 489,574 | 525,819 | 551,761 | 577,436 | 601,504 | 653,596 | 705,212 | 678,861 | 656,451
|2022                                                                                                                              | 542,246 | 469,002 | 441,335 | 449,948 | 501,286 | 543,871 | 566,294 | 595,598 | 657,685 | 698,990 | 700,026 | 642,799
|2023                                                                                                                              | 587,469 | 533,726 | 500,424 | 538,064 | 599,773 | 631,419 | 635,919 | 652,729 | 681,731 | 718,713 | 702,010 | 681,271
|2024                                                                                                                              | 591,159 | 525,750 |         |         |         |         |         |         |         |         |         |        
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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: 4/30/2024                                                                                                          
|Next Release Date: 5/31/2024