Greenhouse 100 Polluters State List (2025 Report, Based on 2023 Data)

(Links on state names lead to individual state displays. Click on column headers to re-sort table)
Sorted by: 2023 Emissions (CO2 equivalent million metric tons) descending

State Name	2023 Emissions (CO2 equivalent million metric tons)	Number of Facilities	Top 3 Parent Companies
Texas	485.5	1,323	Vistra Energy, Exxon Mobil, Energy Capital Partners
Louisiana	146.0	411	Entergy, CF Industries, Dow Inc.
Pennsylvania	109.1	328	Core Natural Resources Inc., Energy Capital Partners, LS Power
Florida	109.1	182	NextEra Energy, Duke Energy, Emera
Indiana	108.6	198	Duke Energy, Cleveland-Cliffs, Nippon Steel
Ohio	102.1	269	Energy Capital Partners, Buckeye Power, Vistra Energy
California	99.3	408	Chevron, Energy Capital Partners, Marathon Petroleum
Alabama	72.2	172	Southern Company, POWERSOUTH ENERGY COOPERATIVE, Energy Capital Partners
Illinois	71.8	223	Vistra Energy, Prairie State Energy Campus (facility), Archer Daniels Midland
Oklahoma	70.2	275	OGE Energy, American Electric Power, CF Industries
Michigan	69.0	228	DTE Energy, CMS Energy, Indeck Niles, LLC
West Virginia	65.7	128	American Electric Power, FirstEnergy, American Consolidated Natural Resources Inc.
Kentucky	65.1	140	PPL Corp., U.S. Government, East Kentucky Power Cooperative
Colorado	62.5	223	Xcel Energy, Craig (power station), Phillips 66
Missouri	59.7	112	Ameren, Associated Electric Cooperative Inc, Evergy Inc.
Georgia	55.0	171	Southern Company, Plant Scherer (single power plant), Oglethorpe Power
Wyoming	50.8	69	Berkshire Hathaway, Laramie River (single power plant), Black Hills Corp.
North Carolina	44.7	131	Duke Energy, Southern Company, Kings Mountain Energy Center (facility)
Iowa	43.7	159	Berkshire Hathaway, Archer Daniels Midland, Alliant Energy
Arizona	42.1	94	Salt River Project, Fortis, Pinnacle West Capital
Mississippi	41.8	117	Southern Company, U.S. Government, Chevron
Wisconsin	39.5	133	WEC Energy Group, Alliant Energy, Dairyland Power Cooperative
New York	38.1	221	ArcLight Capital Partners, National Grid, ASTORIA PROJECT PARTNERS LLC
Arkansas	37.9	98	Entergy, Independence Power Plant, American Electric Power
Tennessee	37.4	129	U.S. Government, Eastman Chemical, Valero Energy
North Dakota	37.3	77	Basin Electric Power Cooperative, Rainbow Energy, Minnkota Power Cooperative
South Carolina	35.2	97	Santee Cooper, Dominion Energy, Duke Energy
Virginia	35.0	136	Dominion Energy, LS Power, Smurfit Westrock PLC
Minnesota	34.8	134	Xcel Energy, Allete, Koch Industries
Kansas	32.8	110	Evergy Inc., Icahn Enterprises, HF Sinclair Corporation
Utah	29.4	80	Berkshire Hathaway, Intermountain Power Agency, Deseret Generation & Transmission Cooperative
Nebraska	25.7	77	Nebraska Public Power District, Omaha Public Power District, Archer Daniels Midland
Washington	24.4	105	TransAlta, Puget Sound Energy, BP
New Mexico	23.7	100	Pinnacle West Capital, Hilcorp Energy, KKR & Co.
New Jersey	19.9	85	ArcLight Capital Partners, JERA, Phillips 66
Alaska	19.6	71	Hilcorp Energy, ConocoPhillips, GOLDEN VALLEY ELECTRIC ASSOC
Montana	18.1	32	Colstrip Power Plant (single power plant), Par Pacific Holdings, Phillips 66
Nevada	15.8	45	Berkshire Hathaway, Barrick Gold, SOUTHERN CALIFORNIA PUBLIC POWER AUTHORITY
Maryland	14.6	54	Heidelberg Materials, ArcLight Capital Partners, OLD DOMINION ELECTRIC COOPERATIVE
Oregon	13.8	58	Portland General Electric, Energy Capital Partners, Iberdrola
Puerto Rico	13.8	24	PUERTO RICO ELECTRIC POWER AUTHORITY, AES Corp., ECOELECTRICA LP
Connecticut	11.1	41	Vistra Energy, ArcLight Capital Partners, CPV Towantic Energy Center
Massachusetts	9.3	68	Vistra Energy, Energy Capital Partners, Antin Infrastructure Partners
Hawaii	6.7	28	Hawaiian Electric Industries, Harbert Management, Par Pacific Holdings
South Dakota	6.3	39	Otter Tail Corp., Grupo Cementos de Chihuahua (GCC), Basin Electric Power Cooperative
Delaware	5.8	20	PBF Energy, Energy Capital Partners, Lotus Infrastructure Partners
Idaho	5.7	37	IDACORP, Amalgamated Sugar, Itochu
Rhode Island	4.2	11	Shell PLC, LS Power, Lotus Infrastructure Partners
Maine	3.4	29	Energy Capital Partners, Nine Dragons Paper, Vistra Energy
New Hampshire	2.4	17	Energy Capital Partners, Carlyle Group, Atlas Holdings
Guam	1.3	9	GUAM POWER AUTHORITY, Osaka Gas, GUAM SOLID WASTE AUTHORITY
Virgin Islands of the U.S.	0.6	5	Virgin Islands Water and Power Authority, LIMETREE BAY TERMINALS LLC, Diageo
Vermont	0.3	7	Mubadala Investment Company, Casella Waste Systems, Smurfit Westrock PLC
District of Columbia	0.3	6	U.S. Government, Georgetown University, George Washington University

PERI's Greenhouse 100 index identifies the top companies responsible for greenhouse gas emissions.

Explanatory notes (For details, see the technical notes.

This edition of the Greenhouse 100 ranks companies by C02-equivalent greenhouse gas emissions (including CO2, methane, nitrous oxide, and fluorinated gases, but not biogenic CO2) directly released by large facilities in the US in 2023.

Percentage of 2022 U.S. greenhouse gas emissions from all sources: parent corporation or entity's percentage of all U.S. greenhouse gas emissions, including electric power, transportation, industrial, commercial, residential, and agricultural emissions, the total of which is 6,343 million metric tons of CO2 equivalents according to the 2022 U.S. Inventory of Greenhouse Gas Emissions and Sinks.  Source: US EPA.

Environmental Justice (EJ): Poor Share and Minority Share: Shares of the potential co-pollutants of combustion borne by people living below the poverty line or by people in minority racial/ethnic groups. In the U.S. population, 10.5 percent lived below the poverty line in 2020 and 40 percent are members of minority racial/ethnic groups.  
Sources: US EPA, US Census, and CTIP.

The links from each parent name lead to an application that gives detailed facility and sector information about the company. You can also search for companies not on the Greenhouse 100. For more information on the data, see the technical notes