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your company emit?
Search corporate greenhouse gas emissions - 2,268 parent companies and 6,455 U.S. industrial facilities, reported annually under the EPA GHGRP. 2.38B metric tons CO₂e in 2023.
- CO₂e (latest year)
- 2.38B
- Reporting facilities
- 6,455
- Parent companies
- 2,268
- Years tracked
- 13
- 1. Vistra 86.3M
- 2. The Southern 78.4M
- 3. Duke Energy 65.0M
- 4. CPN Management 47.6M
- 5. Nextera Energy 45.6M
- 6. American Electric Po… 44.7M
Top Emitters
View top 100 →Top 10 corporate emitters (MT CO₂e)
| # | Company | Emissions (MT CO2e) |
|---|---|---|
| 1 | Vistra | 86.3M |
| 2 | The Southern | 78.4M |
| 3 | Duke Energy | 65.0M |
| 4 | CPN Management | 47.6M |
| 5 | Nextera Energy | 45.6M |
| 6 | American Electric Power CO | 44.7M |
| 7 | Berkshire Hathaway | 43.1M |
| 8 | US Government | 41.4M |
| 9 | Exxon Mobil | 34.3M |
| 10 | Entergy | 33.9M |
| 11 | Xcel Energy | 29.0M |
| 12 | Marathon Petroleum | 28.8M |
| 13 | Dominion Energy | 28.5M |
| 14 | Cleveland-Cliffs | 27.4M |
| 15 | PPL | 26.8M |
| 16 | Phillips 66 | 24.6M |
| 17 | Valero Energy | 23.5M |
| 18 | DTE Energy | 23.0M |
| 19 | Koch Industries | 22.6M |
| 20 | NRG Energy | 22.1M |
Emissions by Industry Sector
Emissions by State
All states →Emissions Guides
Scope 1, 2, 3 Explained
What EPA data covers and what it misses
Biggest US Emitters
Which companies top the emissions rankings
Emissions Data for ESG
Using GHGRP data for investment research
Tracking Emission Trends
What 13 years of data reveals
Carbon Reporting Explained
How GHGRP reporting works
California SB 253
New state-level reporting requirements
Frequently Asked Questions
What is the EPA GHGRP?
The EPA Greenhouse Gas Reporting Program (GHGRP) requires large industrial facilities that emit 25,000 metric tons or more of CO2 equivalent per year to report their emissions annually. Data has been collected since 2010.
What does CO2e mean?
CO2e (carbon dioxide equivalent) is a standard unit for measuring greenhouse gases. It converts all gases (methane, nitrous oxide, etc.) into the equivalent amount of CO2 that would cause the same warming effect.
How current is this data?
The most recent data is from 2023, published by EPA in October 2024. EPA publishes annual updates each fall for the prior reporting year.
What is California SB 253?
SB 253 (Climate Corporate Data Accountability Act) requires US companies with revenues over $1 billion doing business in California to publicly disclose their Scope 1, 2, and 3 greenhouse gas emissions starting in 2026.
Guides & Analysis
Editorial research and plain-language explainers from our team. Every guide is written to help you read the underlying public data correctly.
Live Data Products
PlainCarbon is built on the EPA Greenhouse Gas Reporting Program (GHGRP) database. Every page renders directly from the current dataset. See all research.
Top Emitters
Highest-emitting parent companies ranked by total CO2e across all reporting facilities and years, sourced live from the companies table.
Live DataTop Methane Emitters
Companies ranked by aggregate methane (CH4) emissions across the GHGRP reporting universe, derived live from the emissions table.
Live DataBiggest Emissions Reducers
Companies that have most-reduced their reported CO2e between earliest and latest reporting years, computed from the company_yearly trend table.
About this data
How PlainCarbon works, and why you can trust these numbers
What this site is
PlainCarbon is a public data portal that makes corporate greenhouse gas emissions searchable and comparable. Every figure comes from the EPA Greenhouse Gas Reporting Program (GHGRP), the mandatory federal program that has required large industrial facilities to report their direct emissions since 2010, aggregated to the company level using EPA's own parent-company attribution data.
Editorial process
- Source. Download the EPA GHGRP facility-level emissions export (FLIGHT tool) for each reporting year, 2011 through the latest published year.
- Verify. Join facility records to EPA's own parent-company attribution table, then aggregate to company totals, keeping every figure traceable back to the original EPA facility report.
- Publish. Load the aggregated dataset into our search-optimized database and compile company, industry, and state pages that link back to the original EPA source.
Editorial independence & corrections
The PlainCarbon editorial team is independent and accepts no payment, sponsorship, or promoted placement from any company or industry group covered on this site. Found an error or a stale figure? File a correction via the contact page; see our methodology for full source attribution, data coverage, and known limitations.
Frequently asked
What is the EPA GHGRP?
The EPA Greenhouse Gas Reporting Program (GHGRP) requires large industrial facilities that emit 25,000 metric tons or more of CO2 equivalent per year to report their emissions annually. Data has been collected since 2010.
What does CO2e mean?
CO2e (carbon dioxide equivalent) is a standard unit for measuring greenhouse gases. It converts all gases (methane, nitrous oxide, etc.) into the equivalent amount of CO2 that would cause the same warming effect.
How current is this data?
The most recent data is from 2023, published by EPA in October 2024. EPA publishes annual updates each fall for the prior reporting year.
What is California SB 253?
SB 253 (Climate Corporate Data Accountability Act) requires US companies with revenues over $1 billion doing business in California to publicly disclose their Scope 1, 2, and 3 greenhouse gas emissions starting in 2026.