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Download Data (XLS File)
Illinois Natural Gas in Underground Storage (Base Gas)  (Million Cubic Feet)
Illinois Natural Gas in Underground Storage (Base Gas) (Million Cubic Feet)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1990 571,959 571,959 571,959 571,959 572,425 572,423 572,421 572,421 572,419 572,419 573,776 577,424
  1991 577,418 577,418 577,418 568,227 568,178 568,160 568,158 568,157 568,157 568,158 568,158 568,158
  1992 576,257 576,227 576,227 576,227 576,227 576,227 576,227 576,234 576,234 577,202 577,202 579,715
  1993 620,575 620,856 620,777 621,051 621,543 621,543 621,543 621,543 623,466 624,434 624,483 624,483
  1994 624,627 624,627 624,579 624,777 624,777 624,777 624,777 624,777 624,777 624,777 624,777 625,262
  1995 625,262 625,262 623,587 622,897 653,428 653,428 653,428 653,428 653,428 653,428 653,428 653,428
  1996 653,428 653,428 653,410 653,428 653,386 653,395 653,428 651,468 651,468 651,468 651,468 651,468
  1997 651,468 651,468 651,468 651,467 651,467 651,467 651,466 651,468 651,468 651,404 651,404 651,403
  1998 651,403 651,403 651,403 650,968 649,897 649,967 649,897 649,968 649,968 649,968 649,968 649,968
  1999 667,226 668,662 668,660 668,659 668,650 668,642 668,622 668,605 666,907 666,901 670,098 671,781
  2000 671,781 671,781 675,781 675,781 675,778 675,870 675,870 675,870 675,870 675,729 676,369 669,280
  2001 669,070 668,981 668,481 665,721 668,481 668,481 668,482 668,482 668,482 668,482 668,482 668,482
  2002 668,482 666,632 666,632 666,632 666,632 666,632 666,632 666,632 666,632 666,632 666,632 666,632
  2003 666,839 666,838 670,940 666,338 666,338 666,338 666,338 666,338 666,338 666,338 666,338 666,338
  2004 668,478 668,478 664,585 664,585 664,474 664,474 664,474 664,474 672,320 672,320 672,320 672,320
  2005 672,320 672,664 672,320 672,320 672,320 672,320 672,320 672,320 673,068 673,068 673,068 673,068
  2006 673,068 673,361 673,361 673,261 673,261 673,261 673,261 673,261 674,484 674,484 674,484 674,697
  2007 674,697 674,697 678,329 678,329 678,329 678,329 678,329 678,329 678,329 678,329 678,329 679,607
  2008 679,535 679,535 679,653 679,653 679,653 680,168 680,168 680,168 680,586 680,586 681,443 681,672
  2009 684,069 687,205 687,298 686,964 687,298 691,226 687,769 687,202 687,635 688,235 688,275 688,510
  2010 689,076 688,550 688,631 688,879 689,068 689,709 689,709 689,709 690,137 690,920 689,937 691,023
  2011 691,023 691,023 690,651 690,295 691,011 691,495 691,495 691,495 691,907 694,889 694,889 695,103
  2012 696,088 696,088 696,169 695,715 695,185 696,593 696,593 696,593 696,969 696,969 698,358 698,574
  2013 698,574 698,574 698,650 696,834 698,262 699,144 699,144 699,144 699,536 700,017 700,050 700,184
  2014 700,184 700,184 699,958 699,352 700,240 700,721 700,721 700,721 701,148 700,350 700,402 700,576
  2015 700,576 700,576 700,637 700,098 699,984 701,159 701,159 701,159 701,532 701,732 701,762 701,925
  2016 701,925 701,925 701,214 700,778 701,417 702,443 702,443 702,443 702,905 703,105 702,985 703,379
  2017 703,379 703,379 703,684 702,958 703,372 704,110 704,110 704,110 704,593 704,845 704,925 705,201
  2018 705,201 705,201 705,501 704,613 704,608 705,863 705,882 705,953 706,390 706,520 706,621 706,895
  2019 706,895 706,895 706,375 705,678 706,365 707,450 707,450 708,550 710,151 710,931 710,981 711,150
  2020 711,150 711,150 711,192 710,391 710,380 711,655 711,642 711,655 712,099 712,372 712,642 712,818
  2021 712,818 712,818 712,818 712,173 712,313 713,269 713,268 713,268 713,825 714,326 714,426 714,795
  2022 714,795 714,795 714,216 714,795 714,274 715,252 715,252 715,252 715,792 716,020 716,070 716,418
  2023 716,418 716,418 716,200 715,083 715,514 716,361 716,328 716,318 716,418 716,620 716,820 716,820


- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 2/29/2024
Next Release Date: 3/29/2024

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