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