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Underground Natural Gas Storage Capacity
(Capacity in Million Cubic Feet)
Area: Period:
 Show Data By:
Data Series Area
2018 2019 2020 2021 2022 2023 View
History
Total Storage Capacity
9,240,542 9,231,237 9,259,491 9,264,867 9,268,661 9,278,223 1988-2023
Salt Caverns
701,690 698,505 705,547 704,906 708,117 712,787 1999-2023
Aquifers
1,369,538 1,370,840 1,372,914 1,376,785 1,377,243 1,377,638 1999-2023
Depleted Fields
7,169,314 7,161,892 7,181,030 7,183,176 7,183,301 7,187,798 1999-2023
Total Working Gas Capacity
4,840,158 4,822,109 4,844,737 4,804,849 4,790,969 4,800,735 2008-2023
Salt Caverns
488,557 483,165 487,250 488,456 487,168 491,160 2008-2023
Aquifers
404,646 403,810 403,747 403,747 403,947 403,959 2008-2023
Depleted Fields
3,946,955 3,935,134 3,953,740 3,912,646 3,899,854 3,905,616 2008-2023
Total Number of Existing Fields
410 412 412 412 412 413 1989-2023
Salt Caverns
38 37 37 37 38 39 1999-2023
Aquifers
47 47 47 47 47 47 1999-2023
Depleted Fields
325 328 328 328 327 327 1999-2023
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: Existing fields include both active and inactive fields.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 6/30/2025
Next Release Date: 7/31/2025