EPA GHGRP · state profile · ID
Idaho - lower-footprint state profile
According to the EPA's Greenhouse Gas Reporting Program (GHGRP), a smaller state total: 5.9M MT CO₂e across 53 reporting facilities in ID.
- among states
- #47
- Total CO₂e - Mid-size emitter
- 5.9M MT
- Facilities
- 53
- Companies
- 29
- Avg / facility - Mid intensity
- 111K MT
Data updated May 2026
Idaho reports 5.9M MT CO₂e from 53 EPA GHGRP facilities and 29 parent companies (#47 of 54 U.S. states by aggregated facility CO₂e), led by IDACORP at 1.3M MT (~23% of the state total).
- #47 of 54 states
- IDACORP 22.9% of state
- 0.2% of U.S. GHGRP total
- Avg 111K MT per facility · May 2026
In-state concentration desk
IDACORP accounts for 22.9% of reported Idaho CO₂e (1.3M MT of 5.9M MT). The top three in-state reporters hold 44% (IDACORP; POLARIS RATHDRUM; AMALGAMATED SUGAR CO OREGON COOPERATIVE). Shares use EPA GHGRP facilities sited in ID only, not each parent's company-wide total.
- Idaho is 0.2% of the 2.57B MT U.S. GHGRP facility rollup across 54 jurisdictions.
- Leading EPA sector by CO₂e: Power Plants at 42.8% (2.5M MT across 7 facilities) - orthogonal to the facility-count sector mix below.
- Trails Delaware by 129K MT on the same state ranking.
- Leads Rhode Island by 1.7M MT on the same state ranking.
Idaho 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)
6 47th of 54 higher than 7 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 Idaho 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 Idaho.
Facility mix · Scope 1 size bands
How 53 Idaho 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 Idaho.
Largest corporate emitters in Idaho
Idaho - top corporate emitters (MT CO₂e)
State insight: Idaho
Idaho (ID) reports 5.9M MT CO₂e from 53 EPA GHGRP facilities operated by 29 companies (#47 of 54 states by aggregated facility CO₂e). Per-facility average is about 111K MT. Power Plants leads the in-state CO₂e mix at 42.8%.
Top in-state reporters: IDACORP, POLARIS RATHDRUM, AMALGAMATED SUGAR CO OREGON COOPERATIVE (together 44% of the ID total). These are Scope 1 facility reports only - not a full state inventory or company-wide footprint. See methodology.
Top companies in Idaho
Top facilities in Idaho
Nationwide peers for a lower-footprint state
Comparison paths for a smaller GHGRP state total: nearest CO₂e rollups and facility-count neighbors outside ID.
Similar reported CO₂e
Nearest states by aggregated facility CO₂e (5.9M 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 Idaho (ID). 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.