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| Montana Refinery Isomers/Isobutane Production Capacity as of January 1 (Barrels per Stream Day) | |||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980's | 4,150 | 4,250 | 4,250 | 4,450 | 4,650 | 4,650 | 4,650 | 4,650 | ||
| 1990's | 5,050 | 5,050 | 5,050 | 5,050 | 5,050 | 5,050 | NA | 5,050 | NA | 5,050 |
| 2000's | 5,050 | 5,250 | 5,250 | 5,250 | 5,250 | 5,250 | 5,250 | 5,200 | 5,250 | 5,250 |
| 2010's | 5,250 | 5,250 | 5,250 | 5,250 | 5,250 | 5,250 | 5,250 | 5,250 | 5,250 | 5,250 |
| 2020's | 5,250 | 5,250 | 5,250 | 5,250 | 5,250 | 5,250 |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 6/20/2025 |
| Next Release Date: 6/19/2026 |
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