EPA GHGRP · state profile · CT
Connecticut - lower-footprint state profile
According to the EPA's Greenhouse Gas Reporting Program (GHGRP), a smaller state total: 11.3M MT CO₂e across 53 reporting facilities in CT.
- among states
- #42
- Total CO₂e - Large emitter
- 11.3M MT
- Facilities
- 53
- Companies
- 24
- Avg / facility - High intensity
- 214K MT
Data updated May 2026
Connecticut reports 11.3M MT CO₂e from 53 EPA GHGRP facilities and 24 parent companies (#42 of 54 U.S. states by aggregated facility CO₂e), led by Vistra at 3.6M MT (~32% of the state total).
- #42 of 54 states
- Vistra 31.6% of state
- 0.4% of U.S. GHGRP total
- Avg 214K MT per facility · May 2026
In-state concentration desk
Vistra accounts for 31.6% of reported Connecticut CO₂e (3.6M MT of 11.3M MT). The top three in-state reporters hold 59.9% (Vistra; CPV POWER HOLDINGS; ARCLIGHT ENERGY PARTNERS FUND VII). Shares use EPA GHGRP facilities sited in CT only, not each parent's company-wide total.
- Connecticut is 0.4% of the 2.57B MT U.S. GHGRP facility rollup across 54 jurisdictions.
- Leading EPA sector by CO₂e: Power Plants at 83.2% (9.4M MT across 21 facilities) - orthogonal to the facility-count sector mix below.
- Trails Puerto Rico by 3.2M MT on the same state ranking.
- Leads Massachusetts by 891K MT on the same state ranking.
Connecticut 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 42nd of 54 higher than 12 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 53 Connecticut 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 Connecticut.
Facility mix · Scope 1 size bands
How 53 Connecticut 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 Connecticut.
Largest corporate emitters in Connecticut
Connecticut - top corporate emitters (MT CO₂e)
State insight: Connecticut
Connecticut (CT) reports 11.3M MT CO₂e from 53 EPA GHGRP facilities operated by 24 companies (#42 of 54 states by aggregated facility CO₂e). Per-facility average is about 214K MT. Power Plants leads the in-state CO₂e mix at 83.2%.
Top in-state reporters: Vistra, CPV POWER HOLDINGS, ARCLIGHT ENERGY PARTNERS FUND VII (together 59.9% of the CT total). These are Scope 1 facility reports only - not a full state inventory or company-wide footprint. See methodology.
Top companies in Connecticut
Top facilities in Connecticut
Nationwide peers for a lower-footprint state
Comparison paths for a smaller GHGRP state total: nearest CO₂e rollups and facility-count neighbors outside CT.
Similar reported CO₂e
Nearest states by aggregated facility CO₂e (11.3M MT here).
Similar facility inventory
Nearest states by GHGRP reporting facility count (53 here).
State totals aggregate EPA Greenhouse Gas Reporting Program (GHGRP) facility reports sited in Connecticut (CT). 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.