EPA GHGRP · state profile · CA
California - top-third state emissions
According to the EPA's Greenhouse Gas Reporting Program (GHGRP), an upper-third state rollup: 103.1M MT CO₂e from 549 facilities (#7 of 54 states).
- among states
- #7
- Total CO₂e - Mega emitter
- 103.1M MT
- Facilities
- 549
- Companies
- 215
- Avg / facility - High intensity
- 188K MT
Data updated May 2026
California reports 103.1M MT CO₂e from 549 EPA GHGRP facilities and 215 parent companies (#7 of 54 U.S. states by aggregated facility CO₂e), led by CPN MANAGEMENT at 8.3M MT (~8% of the state total).
- #7 of 54 states
- CPN MANAGEMENT 8% of state
- 4% of U.S. GHGRP total
- Avg 188K MT per facility · May 2026
Dispersed in-state reporter mix
CPN MANAGEMENT is the largest single reporter at 8% of California CO₂e (8.3M MT), but the top three still account for only 22.5% across 215 parent companies. Shares use EPA GHGRP facilities sited in CA only, not each parent's company-wide total.
- California is 4% of the 2.57B MT U.S. GHGRP facility rollup across 54 jurisdictions.
- Leading EPA sector by CO₂e: Power Plants at 34% (35.1M MT across 170 facilities) - orthogonal to the facility-count sector mix below.
- Trails Indiana by 8.5M MT on the same state ranking.
- Leads Illinois by 10.2M MT on the same state ranking.
California 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)
103 7th of 54 higher than 47 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 549 California 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 California.
Facility mix · Scope 1 size bands
How 549 California 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 California.
Largest corporate emitters in California
California - top corporate emitters (MT CO₂e)
Company footprint
Which companies combine scale and emissions?
Each point is a leading California 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 California.
Read the chart values
- CPN MANAGEMENT 43 sites · 8.3M MT
- CHEVRON 17 sites · 8.3M MT
- MARATHON PETROLEUM 24 sites · 6.7M MT
- VALERO ENERGY 26 sites · 4.1M MT
- AIR PRODUCTS & CHEMICALS 27 sites · 3.8M MT
- PHILLIPS 66 27 sites · 3.8M MT
- PBF ENERGY 5 sites · 3.6M MT
- AES 8 sites · 3.1M MT
- TAIHEIYO CEMENT USA 4 sites · 2.8M MT
- PACIFIC GAS & ELECTRIC 3 sites · 2.6M MT
- CITY OF LOS ANGELES CALIFORNIA 7 sites · 2.6M MT
- Vistra 40 sites · 2.0M MT
State insight: California
California (CA) reports 103.1M MT CO₂e from 549 EPA GHGRP facilities operated by 215 companies (#7 of 54 states by aggregated facility CO₂e). Per-facility average is about 188K MT. Power Plants leads the in-state CO₂e mix at 34%.
Upper-third emitters here include CPN MANAGEMENT, CHEVRON, MARATHON PETROLEUM (22.5% of the CA total). These are Scope 1 facility reports only - not a full state inventory or company-wide footprint. See methodology.
Largest corporate emitters in California
Highest-emitting GHGRP facilities in California
Nationwide peers for a top-third state rollup
Two EPA GHGRP peer sets for an upper-third state (103.1M MT): nearest CO₂e totals and facility-book matches beyond the in-state tables above.
Similar reported CO₂e
Nearest states by aggregated facility CO₂e (103.1M MT here).
Similar facility inventory
Nearest states by GHGRP reporting facility count (549 here).
State totals aggregate EPA Greenhouse Gas Reporting Program (GHGRP) facility reports sited in California (CA). 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.