Great Falls Refinery
A 30,000 barrels per calendar day petroleum refinery in Great Falls, MT, operated by Calumet Montana Refining, LLC. Nelson Complexity 7.5.
Record
- Rated capacity
- 30,000 bpd (atmospheric crude distillation, calendar day)
- Nelson Complexity Index
- 7.5
- Status
- Operator
- Calumet Montana Refining, LLC
- Parent
- Calumet, Inc. (NASDAQ:CLMT)
- Supplier graph
- bomforge.com/companies/calumet
- Coordinates
- 47.5240, -111.2910
- PADD
- 4
Feedstock slate
- Average API gravity
- 28°
- Average sulfur
- 1.6%
- Primary grades
- WCS
Product yield
| Gasoline | 35% |
| Distillate | 30% |
| Residual | 15% |
| Other | 20% |
What coverage reports
Power outage at Great Falls oil refinery
2026-04-23 · 1 publisher filed it
operations 1
These are counts of what publishers filed about this plant, not an operating status. A quiet month means nobody named this facility that month, which is a fact about coverage and not about the plant. Where this site states how a refinery is running it says so in the facts table above, from the curated dataset, and cites it there.
Wire
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Operations HighPower outage at Great Falls oil refineryNonstop Local News Montana · matched great, falls
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General LowRefinery’s tax protests leave Great Falls’ schools in a budgetary bindMontana Free Press · matched great, falls
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General LowA ‘sustainable’ shift at the Great Falls refinery could come with costs to localsMontana Free Press · matched great, falls
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Incident HighCalumet Montana Refining resolves leak incident in Great FallsNonstop Local News Montana · matched great, falls
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Operations LowRoad closed near Great Falls refineryKRTV · matched great, falls
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Policy LowCalumet Refinery in Great Falls fined $385K for lax reporting, poor record keepingGreat Falls Tribune · matched great, falls
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Policy LowEPA requires Calumet Montana Refining to correct chemical risk management violations at Great Falls facilityNonstop Local News Montana · matched great, falls
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General LowBriefs: Medicaid redetermination numbers; Great Falls refinery cleanupMontana Public Radio · matched great, falls
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General LowCalumet Montana oil refinery in Great Falls to become top US producer of sustainable jet fuelGreat Falls Tribune · matched great, falls
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General LowCalumet Specialty Products gets hydrogen plant financing for Great Falls refinery RD projectS&P Global · matched great, falls
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Incident HighFire at Great Falls refineryKPAX News · matched great, falls
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Incident CriticalInvestigation continues into explosion at Great Falls refineryKRTV · matched great, falls
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Incident HighGreat Falls refinery fire result of prolonged cold weatherKPAX News · matched great, falls
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General LowUPDATE: Roads around Calumet Refinery reopened to traffic in Great FallsGreat Falls Tribune · matched great, falls
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Incident HighVideo extra: Great Falls refinery fireKTVQ · matched great, falls
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General LowUPDATE: Great Falls refinery issues statement, all plant personnel accounted forKPAX News · matched great, falls
Every item names this facility by city or plant name in its headline or summary. Operator-only mentions never attribute. Headlines and links belong to the publishers named.