Calumet Montana Refining, LLC
Every figure on PlainCarbon is rendered directly from EPA Greenhouse Gas Reporting Program (GHGRP) data, no number is typed in by an editor. This page draws directly on the EPA Greenhouse Gas Reporting Program (GHGRP), no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.
GREAT FALLS, MT · CASCADE COUNTY · NAICS 324110
Data updated May 2026
Annual Emissions History
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 427,371 |
| 2022 | 260,293 |
| 2021 | 283,600 |
| 2020 | 299,723 |
| 2019 | 311,235 |
| 2018 | 312,251 |
| 2017 | 318,275 |
| 2016 | 289,472 |
| 2015 | 131,430 |
| 2014 | 114,242 |
| 2013 | 120,895 |
| 2012 | 120,273 |
| 2011 | 147,743 |
Facility Insight: Calumet Montana Refining, LLC
Calumet Montana Refining, LLC (EPA GHGRP Facility ID 1007739) reported 427K metric tons of CO2-equivalent in 2023, operating in GREAT FALLS, MT within CASCADE COUNTY. The site is classified under Chemicals with NAICS code 324110.
The facility has 13 years of reported data on record, covering the 2011–2023 window. Over that period, annual CO2e emissions rose by 189.3%, with the peak observed year showing up to 427K MT CO2e.
Emissions Analysis
Calumet Montana Refining, LLC is a moderate emitter at 427K MT CO2e, typical of mid-sized industrial operations.
Frequently Asked Questions
How much CO2 does Calumet Montana Refining, LLC emit? ▼
Calumet Montana Refining, LLC reported 427K MT CO2e in 2023.
Is Calumet Montana Refining, LLC reducing emissions? ▼
Over 13 reporting years (2011–2023), Calumet Montana Refining, LLC's emissions have increased by 189.3%. This may reflect expanded operations or increased production.