EPA GHGRP · state profile · MA
Massachusetts - lower-footprint state profile
According to the EPA's Greenhouse Gas Reporting Program (GHGRP), a smaller state total: 10.5M MT CO₂e across 92 reporting facilities in MA.
- among states
- #43
- Total CO₂e - Large emitter
- 10.5M MT
- Facilities
- 92
- Companies
- 45
- Avg / facility - Mid intensity
- 114K MT
Data updated May 2026
Massachusetts reports 10.5M MT CO₂e from 92 EPA GHGRP facilities and 45 parent companies (#43 of 54 U.S. states by aggregated facility CO₂e), led by Vistra at 2.6M MT (~25% of the state total).
- #43 of 54 states
- Vistra 24.7% of state
- 0.4% of U.S. GHGRP total
- Avg 114K MT per facility · May 2026
In-state concentration desk
Vistra accounts for 24.7% of reported Massachusetts CO₂e (2.6M MT of 10.5M MT). The top three in-state reporters hold 41.4% (Vistra; CPN MANAGEMENT; VICINITY ENERGY). Shares use EPA GHGRP facilities sited in MA only, not each parent's company-wide total.
- Massachusetts is 0.4% of the 2.57B MT U.S. GHGRP facility rollup across 54 jurisdictions.
- Leading EPA sector by CO₂e: Power Plants at 73.5% (7.7M MT across 29 facilities) - orthogonal to the facility-count sector mix below.
- Trails Connecticut by 891K MT on the same state ranking.
- Leads Hawaii by 2.9M MT on the same state ranking.
Massachusetts 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)
11 43rd of 54 higher than 11 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 92 Massachusetts 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 Massachusetts.
Facility mix · Scope 1 size bands
How 92 Massachusetts 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 Massachusetts.
Largest corporate emitters in Massachusetts
Massachusetts - top corporate emitters (MT CO₂e)
State insight: Massachusetts
Massachusetts (MA) reports 10.5M MT CO₂e from 92 EPA GHGRP facilities operated by 45 companies (#43 of 54 states by aggregated facility CO₂e). Per-facility average is about 114K MT. Power Plants leads the in-state CO₂e mix at 73.5%.
Top in-state reporters: Vistra, CPN MANAGEMENT, VICINITY ENERGY (together 41.4% of the MA total). These are Scope 1 facility reports only - not a full state inventory or company-wide footprint. See methodology.
Top companies in Massachusetts
Top facilities in Massachusetts
Nationwide peers for a lower-footprint state
Comparison paths for a smaller GHGRP state total: nearest CO₂e rollups and facility-count neighbors outside MA.
Similar reported CO₂e
Nearest states by aggregated facility CO₂e (10.5M MT here).
Similar facility inventory
Nearest states by GHGRP reporting facility count (92 here).
State totals aggregate EPA Greenhouse Gas Reporting Program (GHGRP) facility reports sited in Massachusetts (MA). 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.