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| Montana Natural Gas Underground Storage Capacity (Million Cubic Feet) | ||||||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980's | 373,963 | 373,960 | ||||||||
| 1990's | 373,960 | 373,960 | 375,010 | 375,010 | 375,010 | 375,010 | 375,010 | 342,785 | 371,510 | 371,510 |
| 2000's | 371,510 | 372,000 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 374,201 | 376,301 |
| 2010's | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,301 | 376,225 | 376,225 | 376,225 |
| 2020's | 376,225 | 376,225 | 376,225 | 376,225 |
| - = 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 |