EPA GHGRP · state profile · GU
Guam - lower-footprint state profile
According to the EPA's Greenhouse Gas Reporting Program (GHGRP), a smaller state total: 1.4M MT CO₂e across 10 reporting facilities in GU.
- among states
- #51
- Total CO₂e - Mid-size emitter
- 1.4M MT
- Facilities
- 10
- Companies
- 3
- Avg / facility - High intensity
- 138K MT
Data updated May 2026
Guam reports 1.4M MT CO₂e from 10 EPA GHGRP facilities and 3 parent companies (#51 of 54 U.S. states by aggregated facility CO₂e), led by GUAM POWER AUTHORITY at 836K MT (~61% of the state total).
- #51 of 54 states
- GUAM POWER AUTHORITY 60.7% of state
- 0.1% of U.S. GHGRP total
- Avg 138K MT per facility · May 2026
Top-reporter concentration desk
GUAM POWER AUTHORITY dominates the in-state book at 60.7% of reported Guam CO₂e (836K MT of 1.4M MT). Top-three reporters hold 94.7% (GUAM POWER AUTHORITY; OSAKA GAS ENERGY AMERICA; GUAM SOLID WASTE AUTHORITY). Shares use EPA GHGRP facilities sited in GU only, not each parent's company-wide total.
- Guam is 0.1% of the 2.57B MT U.S. GHGRP facility rollup across 54 jurisdictions.
- Leading EPA sector by CO₂e: Power Plants at 95.5% (1.3M MT across 9 facilities) - orthogonal to the facility-count sector mix below.
- Trails New Hampshire by 1.0M MT on the same state ranking.
- Leads U.S. Virgin Islands by 796K MT on the same state ranking.
Guam 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)
1 51st of 54 higher than 3 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 10 Guam 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 Guam.
Facility mix · Scope 1 size bands
How 10 Guam 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 Guam.
Largest corporate emitters in Guam
Guam - top corporate emitters (MT CO₂e)
Company footprint
Which companies combine scale and emissions?
Each point is a leading Guam 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 3 reporters displayed above, not a measure of production, population, or total company-wide emissions outside Guam.
Read the chart values
- GUAM POWER AUTHORITY 7 sites · 836K MT
- OSAKA GAS ENERGY AMERICA 4 sites · 407K MT
- GUAM SOLID WASTE AUTHORITY 1 sites · 62K MT
State insight: Guam
Guam (GU) reports 1.4M MT CO₂e from 10 EPA GHGRP facilities operated by 3 companies (#51 of 54 states by aggregated facility CO₂e). Per-facility average is about 138K MT. Power Plants leads the in-state CO₂e mix at 95.5%.
Top in-state reporters: GUAM POWER AUTHORITY, OSAKA GAS ENERGY AMERICA, GUAM SOLID WASTE AUTHORITY (together 94.7% of the GU total). These are Scope 1 facility reports only - not a full state inventory or company-wide footprint. See methodology.
Top companies in Guam
Top facilities in Guam
Nationwide peers for a lower-footprint state
Comparison paths for a smaller GHGRP state total: nearest CO₂e rollups and facility-count neighbors outside GU.
Similar reported CO₂e
Nearest states by aggregated facility CO₂e (1.4M MT here).
State totals aggregate EPA Greenhouse Gas Reporting Program (GHGRP) facility reports sited in Guam (GU). 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.