EPA GHGRP · state profile · IA
Iowa - GHG emissions
According to the EPA's Greenhouse Gas Reporting Program (GHGRP), corporate greenhouse-gas emissions reported across Iowa, by company and facility.
- among states
- #19
- Total CO₂e - Large emitter
- 44.3M MT
- Facilities
- 172
- Companies
- 98
- Avg / facility - High intensity
- 258K MT
Data updated May 2026
BERKSHIRE HATHAWAY holds 13% of Iowa's 44.3M MT GHGRP total; top three reporters 36.8% (#19 of 54 states).
- #19 of 54 states
- BERKSHIRE HATHAWAY 13% of state
- 1.7% of U.S. GHGRP total
- Avg 258K MT per facility · May 2026
Dispersed in-state reporter mix
BERKSHIRE HATHAWAY is the largest single reporter at 13% of Iowa CO₂e (5.8M MT), but the top three still account for only 36.8% across 98 parent companies. Shares use EPA GHGRP facilities sited in IA only, not each parent's company-wide total.
- Iowa is 1.7% of the 2.57B MT U.S. GHGRP facility rollup across 54 jurisdictions.
- Leading EPA sector by CO₂e: Power Plants at 45.2% (20.1M MT across 26 facilities) - orthogonal to the facility-count sector mix below.
- Trails North Carolina by 932K MT on the same state ranking.
- Leads Wisconsin by 387K MT on the same state ranking.
Iowa 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)
44 19th of 54 higher than 35 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 172 Iowa 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 Iowa.
Facility mix · Scope 1 size bands
How 172 Iowa 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 Iowa.
Largest corporate emitters in Iowa
Iowa - top corporate emitters (MT CO₂e)
Company footprint
Which companies combine scale and emissions?
Each point is a leading Iowa 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 Iowa.
Read the chart values
- BERKSHIRE HATHAWAY 108 sites · 5.8M MT
- MUNICIPAL ELECTRIC UTILITY OF THE CITY OF CEDAR FALLS IOWA 1 sites · 5.8M MT
- ARCHER DANIELS MIDLAND 18 sites · 4.8M MT
- CENTRAL IOWA POWER COOPERATIVE 2 sites · 3.7M MT
- ALLIANT ENERGY 10 sites · 3.3M MT
- CF INDUSTRIES HOLDINGS 6 sites · 3.2M MT
- IOWA FERTLIZER CO 1 sites · 1.4M MT
- KOCH INDUSTRIES 59 sites · 1.2M MT
- IOWA CITY OF COON RAPIDS IOWA 1 sites · 964K MT
- VALERO ENERGY 26 sites · 892K MT
- CARGILL 27 sites · 882K MT
- POET HOLDING CO 6 sites · 853K MT
Concentration lens: Iowa
Iowa (IA) concentrates 36.8% of its 44.3M MT CO₂e in the top three in-state reporters while ranking #19 of 54 states overall.
Top in-state reporters: BERKSHIRE HATHAWAY, MUNICIPAL ELECTRIC UTILITY OF THE CITY OF CEDAR FALLS IOWA, ARCHER DANIELS MIDLAND (together 36.8% of the IA total). These are Scope 1 facility reports only - not a full state inventory or company-wide footprint. See methodology.
Top companies in Iowa
Top facilities in Iowa
Nationwide states with similar CO₂e or facility scale
Two EPA GHGRP-derived peer sets for Iowa: 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 (44.3M MT here).
Similar facility inventory
Nearest states by GHGRP reporting facility count (172 here).
State totals aggregate EPA Greenhouse Gas Reporting Program (GHGRP) facility reports sited in Iowa (IA). 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.