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California Working Natural Gas Underground Storage Capacity (Million Cubic Feet)
California Working Natural Gas Underground Storage Capacity (Million Cubic Feet)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  2012 335,396 335,396 335,396 346,396 349,296 349,296 349,296 349,296 349,296 349,296 349,296 349,296
  2013 349,296 349,296 349,296 349,296 349,296 349,296 374,296 374,296 374,296 374,296 374,296 374,296
  2014 374,296 374,296 374,296 374,296 374,296 374,296 374,296 374,296 374,296 374,296 374,296 374,296
  2015 376,996 376,996 376,996 376,996 376,996 376,996 376,996 376,996 376,996 375,496 375,496 375,496
  2016 375,496 375,496 375,496 375,496 375,496 375,496 375,496 375,496 375,496 375,496 375,496 371,436
  2017 371,436 371,436 371,436 373,236 373,236 373,236 373,236 373,236 373,236 373,236 373,236 373,236
  2018 373,236 373,236 373,236 373,236 373,236 373,236 373,236 373,236 373,236 373,236 373,236 373,236
  2019 373,236 373,726 373,966 373,966 373,966 373,966 373,966 373,966 373,966 373,966 373,966 373,966
  2020 373,966 373,966 373,966 373,966 373,966 373,966 373,966 373,966 373,966 373,966 373,966 373,966
  2021 373,966 373,966 373,966 373,966 373,966 322,868 322,868 322,868 322,868 322,868 322,868 322,868
  2022 322,868 322,868 322,868 322,868 322,868 322,868 322,868 322,868 322,868 322,868 322,868 322,868
  2023 322,868 322,868 322,868 322,368 322,368 322,368 322,368 322,368 322,368 322,368 322,368 322,368
  2024 322,368 322,368 322,918 322,918 322,918 322,918 322,918 322,918 322,918 323,068 323,068 323,068
  2025 323,068 323,068 323,068 323,068 323,068 323,068 323,068

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 9/30/2025
Next Release Date: 10/31/2025

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