EPA GHGRP · state profile · MT
Montana - concentrated GHGRP footprint
According to the EPA's Greenhouse Gas Reporting Program (GHGRP), high per-facility intensity (425K MT/site) across 43 reporting facilities in Montana.
- among states
- #36
- Total CO₂e - Large emitter
- 18.3M MT
- Facilities
- 43
- Companies
- 26
- Avg / facility - High intensity
- 425K MT
Data updated May 2026
TALEN ENERGY holds 60% of Montana's 18.3M MT GHGRP total; top three reporters 70.3% (#36 of 54 states).
- #36 of 54 states
- TALEN ENERGY 60% of state
- 0.7% of U.S. GHGRP total
- Avg 425K MT per facility · May 2026
Top-reporter concentration desk
TALEN ENERGY dominates the in-state book at 60% of reported Montana CO₂e (11.0M MT of 18.3M MT). Top-three reporters hold 70.3% (TALEN ENERGY; PHILLIPS 66; CHS). Shares use EPA GHGRP facilities sited in MT only, not each parent's company-wide total.
- Montana is 0.7% of the 2.57B MT U.S. GHGRP facility rollup across 54 jurisdictions.
- Leading EPA sector by CO₂e: Power Plants at 74.6% (13.6M MT across 11 facilities) - orthogonal to the facility-count sector mix below.
- Trails New Jersey by 2.1M MT on the same state ranking.
- Leads Maryland by 800K MT on the same state ranking.
Montana vs all states by reported GHGRP CO₂e
Where this state's aggregated facility Scope 1 sits among every state and territory in the EPA GHGRP file (readout in million MT)
18 36th of 54 higher than 18 of 54 states
States and territories, banded by total reported facility CO₂e (MT)
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA Greenhouse Gas Reporting Program · May 2026
Facility mix · EPA sector count
How 43 Montana facilities split by EPA sector
Exclusive in-state facility counts by EPA industry_sector, orthogonal to the leading-parent CO₂e share lens above. Source: EPA GHGRP facility reports in Montana.
Facility mix · Scope 1 size bands
How 43 Montana facilities split by latest reported Scope 1
Exclusive in-state facility counts by latest reported Scope 1 size band, orthogonal to the EPA sector mix above. Source: EPA GHGRP facility reports in Montana.
Largest corporate emitters in Montana
Montana - top corporate emitters (MT CO₂e)
Company footprint
Which companies combine scale and emissions?
Each point is a leading Montana reporter. The crosshairs mark the median among the companies shown, so the chart distinguishes a larger facility footprint from a higher emissions total.
This is a comparison of the leading 12 reporters displayed above, not a measure of production, population, or total company-wide emissions outside Montana.
Read the chart values
- TALEN ENERGY 11 sites · 11.0M MT
- PHILLIPS 66 27 sites · 967K MT
- CHS 5 sites · 918K MT
- YELLOWSTONE ENERGY 1 sites · 830K MT
- PAR PACIFIC HOLDINGS 5 sites · 720K MT
- HEOROT POWER HOLDINGS 3 sites · 663K MT
- COLSTRIP ENERGY 1 sites · 475K MT
- CALUMET SPECIALTY PRODUCTS PARTNERS 5 sites · 427K MT
- NORTHWESTERN 3 sites · 330K MT
- CRH AMERICAS 7 sites · 324K MT
- GRAYMONT 9 sites · 276K MT
- GCC OF AMERICA 5 sites · 250K MT
Concentration lens: Montana
Montana (MT) concentrates 70.3% of its 18.3M MT CO₂e in the top three in-state reporters while ranking #36 of 54 states overall.
Top in-state reporters: TALEN ENERGY, PHILLIPS 66, CHS (together 70.3% of the MT total). These are Scope 1 facility reports only - not a full state inventory or company-wide footprint. See methodology.
Top companies in Montana
High-intensity reporting sites in Montana
Nationwide states with similar CO₂e or facility scale
Two EPA GHGRP-derived peer sets for Montana: nearest states by aggregated facility CO₂e and by reporting-facility inventory. These are cross-state neighborhoods, not the in-state company list above.
Similar reported CO₂e
Nearest states by aggregated facility CO₂e (18.3M MT here).
Similar facility inventory
Nearest states by GHGRP reporting facility count (43 here).
State totals aggregate EPA Greenhouse Gas Reporting Program (GHGRP) facility reports sited in Montana (MT). Figures reflect facility self-reporting, not a full state inventory. See our methodology. Retrieved and formatted by PlainCarbon
Related reading: Understanding corporate carbon reporting · All states · Methodology
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the EPA Greenhouse Gas Reporting Program (GHGRP). Consult a qualified professional before making decisions based on this data.