| State Name | 2021 Emissions from Fossil Fuel Supplies (CO2 million metric tons) | CO2 from oil (mmt) (sorted by) | CO2 from nat. gas (mmt) | CO2 from coal (mmt) | Number of Facilities | Top 3 Parent Companies |
|---|---|---|---|---|---|---|
| Arizona | 2.4 | 0.0 | 2.4 | 0.0 | 2 | Fortis, City of Mesa, AZ |
| Connecticut | 10.6 | 0.0 | 10.6 | 0.0 | 9 | Iberdrola, EverSource Energy, City of Norwich, CT |
| Florida | 12.9 | 0.0 | 12.9 | 0.0 | 23 | Emera, City of Gainesville, FL, NextEra Energy |
| Georgia | 15.5 | 0.0 | 15.5 | 0.0 | 36 | Southern Company, Algonquin Power & Utilities, City of Dalton, GA |
| Iowa | 16.7 | 0.0 | 16.7 | 0.0 | 15 | Berkshire Hathaway, Alliant Energy, Black Hills Corp. |
| Idaho | 4.0 | 0.0 | 4.0 | 0.0 | 1 | MDU Resources |
| Massachusetts | 15.1 | 0.0 | 15.1 | 0.0 | 12 | National Grid, EverSource Energy, Iberdrola |
| Maryland | 7.9 | 0.0 | 5.1 | 2.8 | 20 | Exelon, Angela Svonavec, Quintana Capital Group GP Ltd |
| Maine | 0.3 | 0.0 | 0.3 | 0.0 | 1 | Ullico Inc. |
| Missouri | 11.8 | 0.0 | 11.7 | 0.1 | 16 | Spire Inc., Ameren, Algonquin Power & Utilities |
| North Carolina | 38.9 | 0.0 | 38.9 | 0.0 | 19 | Duke Energy, Dominion Energy, City of Kings Mountain, NC |
| Nebraska | 6.0 | 0.0 | 6.0 | 0.0 | 7 | Black Hills Corp., Metropolitan Utilities District, City of Fremont, NE |
| New Hampshire | 0.9 | 0.0 | 0.9 | 0.0 | 5 | Algonquin Power & Utilities, Irving Oil, Brookfield Asset Management |
| New York | 61.0 | 0.0 | 61.0 | 0.0 | 25 | National Grid, Consolidated Edison, Iberdrola |
| Oregon | 6.2 | 0.0 | 6.2 | 0.0 | 4 | Northwest Natural Holding Co, Alto Ingredients, Incitec Pivot |
| Puerto Rico | 0.0 | 0.0 | 0.0 | 0.0 | 1 | Ingersoll Rand |
| Rhode Island | 2.0 | 0.0 | 2.0 | 0.0 | 1 | National Grid |
| South Carolina | 5.6 | 0.0 | 5.6 | 0.0 | 11 | Dominion Energy, YORK COUNTY NATURAL GAS AUTHORITY, FORT HILL NATURAL GAS AUTHORITY |
| South Dakota | 0.2 | 0.0 | 0.2 | 0.0 | 3 | City of Watertown, SD, Poet LLC |
| Virginia | 41.5 | 0.0 | 16.9 | 24.6 | 55 | Energy and Minerals Group, AltaGas, Alpha Metallurgical Resources |
| Vermont | 0.7 | 0.0 | 0.7 | 0.0 | 1 | CAISSE DE DEPOT ET PLACEMENT DU QUEBEC |
| Wisconsin | 27.6 | 0.0 | 27.6 | 0.0 | 26 | WEC Energy Group, Alliant Energy, MGE ENERGY INC |
| Nevada | 12.6 | 0.2 | 12.5 | 0.0 | 6 | Southwest Gas, Berkshire Hathaway, Sky Quarry |
| West Virginia | 198.7 | 3.0 | 15.6 | 180.1 | 183 | Invesco, Alpha Metallurgical Resources, Alliance Resource Partners |
| Virgin Islands of the U.S. | 3.4 | 3.4 | 0.0 | 0.0 | 1 | EIG Global Energy Partners |
| Arkansas | 12.1 | 9.9 | 2.2 | 0.0 | 7 | Delek, Black Hills Corp., Martin Midstream Partners |
| North Dakota | 57.4 | 10.2 | 12.9 | 33.8 | 23 | NACCO Industries, Marathon Petroleum, Allete |
| Colorado | 73.2 | 10.6 | 23.9 | 24.0 | 34 | Kinder Morgan, Xcel Energy, Suncor Energy |
| Alaska | 15.6 | 10.8 | 3.0 | 1.8 | 9 | Marathon Petroleum, Arctic Slope Regional Corp., AltaGas |
| Hawaii | 12.2 | 12.1 | 0.2 | 0.0 | 9 | Par Pacific Holdings, Macquarie, One Rock Capital Partners |
| Delaware | 15.4 | 13.0 | 2.3 | 0.0 | 7 | PBF Energy, Exelon, Chesapeake Utilities |
| New Mexico | 39.9 | 13.3 | 4.6 | 18.6 | 19 | HF Sinclair Corporation, Peabody Energy, Navajo Transitional Energy Company LLC |
| Wyoming | 425.9 | 15.8 | 3.3 | 406.8 | 34 | Peabody Energy, Arch Resources, Navajo Transitional Energy Company LLC |
| Michigan | 64.5 | 21.9 | 42.6 | 0.0 | 17 | Marathon Petroleum, CMS Energy, DTE Energy |
| Alabama | 61.3 | 22.3 | 18.3 | 20.7 | 58 | Warrior Met Coal, Hunt Consolidated, Shell PLC |
| Tennessee | 32.4 | 22.8 | 9.6 | 0.0 | 40 | Valero Energy, City of Memphis, TN, Southern Company |
| Montana | 88.8 | 30.8 | 5.5 | 52.4 | 17 | Navajo Transitional Energy Company LLC, Global Mining Group LLC, Westmoreland Mining LLC |
| Utah | 70.5 | 30.9 | 11.8 | 27.8 | 16 | Trafigura Group, Dominion Energy, Chevron |
| Pennsylvania | 173.4 | 35.5 | 46.7 | 91.2 | 162 | Consol Energy, Delta Air Lines, UGI Corp. |
| Kentucky | 102.3 | 37.8 | 5.0 | 59.5 | 154 | Marathon Petroleum, Alliance Resource Partners, Invesco |
| New Jersey | 72.2 | 45.4 | 26.8 | 0.0 | 27 | Phillips 66, Public Service Enterprise, PBF Energy |
| Mississippi | 63.4 | 50.1 | 0.3 | 4.1 | 15 | Chevron, Denbury Inc., Ergon |
| Kansas | 93.0 | 59.0 | 34.0 | 0.0 | 22 | HF Sinclair Corporation, Oneok, CHS Inc. |
| Indiana | 172.6 | 62.8 | 65.9 | 43.9 | 48 | BP, NiSource, Peabody Energy |
| Minnesota | 88.5 | 66.0 | 22.5 | 0.0 | 27 | Koch Industries, Marathon Petroleum, CenterPoint Energy |
| Oklahoma | 91.5 | 66.2 | 25.3 | 0.0 | 18 | Phillips 66, HF Sinclair Corporation, Oneok |
| Ohio | 134.3 | 73.4 | 54.7 | 6.2 | 42 | Cenovus Energy, MPLX LP, PBF Energy |
| Washington | 99.9 | 82.4 | 17.4 | 0.0 | 14 | BP, HF Sinclair Corporation, Marathon Petroleum |
| Illinois | 277.1 | 143.1 | 51.6 | 82.5 | 40 | Marathon Petroleum, Foresight Energy, Exxon Mobil |
| California | 316.7 | 224.8 | 92.0 | 0.0 | 46 | Chevron, Marathon Petroleum, Sempra Energy |
| Louisiana | 405.8 | 373.0 | 32.4 | 0.4 | 41 | Marathon Petroleum, Exxon Mobil, PDVSA (Petroleos de Venezuela S.A.) |
| Texas | 1,129.4 | 759.1 | 348.3 | 22.0 | 160 | Valero Energy, Exxon Mobil, Enterprise Products Partners |
This edition of the Greenhouse 100 Suppliers ranks companies by C02-equivalent greenhouse gas emissions from their supply of products in 2021 that result in GHG emissions when the products are released, combusted, or oxidized. This differs from the Greenhouse 100 Polluters because the Greenhouse 100 Polluters ranks companies by direct emissions of GHGs from large facilities. It includes both data from EPA's GHGRP Suppliers database and a PERI database of coal mines based on EIA and MSHA data. Petroleum exports are not included as supplier amounts (we assume that they were also reported as production if they were produced in the US.)
Important: EPA treats some quantities of CO2 released from suppliers as confidential where the supplying facility makes only one product and its amount of production could be calculated from its CO2 emissions. PERI has no way to determine the values of these confidential amounts and has treated them as zeroes. Users of this list should be aware that data derived from EPA's GHGRP Suppliers database are a lower bound and may actually be larger than shown.
The links from each parent name or state lead to an application that gives detailed facility information. You can also search for companies not on the Greenhouse 100 Suppliers Index. For more information on the data, see the technical notes.