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

State Name	2023 Emissions from Fossil Fuel Supplies (CO2 million metric tons)	CO2 from oil (mmt)	CO2 from nat. gas (mmt)	CO2 from coal (mmt)	Number of Facilities	Top 3 Parent Companies
Puerto Rico	0.0	0.0	0.0	0.0	5	Oldach Associates LLC, Energy Transfer, Watsco, Inc
Virgin Islands of the U.S.	0.0	0.0	0.0	0.0	1	Port Hamilton Refining & Transportation, LLLP
Hawaii	12.2	12.1	0.2	0.0	8	Par Pacific Holdings, Argo Infrastructure Partners, Energy Transfer
Maine	0.2	0.0	0.2	0.0	1	Ullico Inc.
South Dakota	0.3	0.0	0.3	0.0	3	City of Watertown, SD, Poet LLC
Mississippi	66.7	54.3	0.4	3.4	15	Chevron, Exxon Mobil, Ergon
Vermont	0.7	0.0	0.7	0.0	1	CAISSE DE DEPOT ET PLACEMENT DU QUEBEC
New Hampshire	0.8	0.0	0.8	0.0	5	Algonquin Power & Utilities, Irving Oil, Anheuser-Busch InBev
Rhode Island	2.1	0.0	2.1	0.0	1	PPL Corp.
Arkansas	14.4	12.1	2.2	0.0	9	Delek, Black Hills Corp., Martin Midstream Partners
Delaware	20.2	17.7	2.6	0.0	9	PBF Energy, Exelon, Chesapeake Utilities
Arizona	2.7	0.0	2.7	0.0	3	Fortis, City of Mesa, AZ, Ability Refrigerants
Alaska	16.5	11.7	3.1	1.7	9	Marathon Petroleum, Arctic Slope Regional Corp., TriSummit Cycle Inc
Wyoming	426.7	19.4	3.5	403.8	34	Peabody Energy, Core Natural Resources Inc., Petri E Koivula; David Michael Jamison
Idaho	4.7	0.0	4.7	0.0	1	MDU Resources
Maryland	7.4	0.0	4.8	2.6	23	Exelon, J Clifford Forrest III, Jason A Kitzmiller
Kentucky	109.0	43.0	4.9	61.1	145	Marathon Petroleum, Alliance Resource Partners, Sev.en Energy
New Mexico	32.9	11.1	5.2	13.6	18	HF Sinclair Corporation, Navajo Transitional Energy Company LLC, Peabody Energy
South Carolina	5.2	0.0	5.2	0.0	12	Dominion Energy, YORK COUNTY NATURAL GAS AUTHORITY, FORT HILL NATURAL GAS AUTHORITY
Nebraska	5.9	0.0	5.9	0.0	7	Black Hills Corp., Metropolitan Utilities District, City of Nebraska City, NE
Montana	89.9	30.6	6.3	53.0	16	Navajo Transitional Energy Company LLC, Global Mining Group LLC, Westmoreland Mining LLC
Oregon	6.7	0.0	6.7	0.0	4	Northwest Natural Holding Co, Alto Ingredients, Incitec Pivot
Connecticut	6.8	0.0	6.8	0.0	9	Iberdrola, EverSource Energy, City of Norwich, CT
Tennessee	33.2	23.6	9.6	0.0	37	Valero Energy, City of Memphis, TN, Southern Company
Oklahoma	79.0	68.1	10.9	0.0	17	Phillips 66, HF Sinclair Corporation, Valero Energy
Florida	11.1	0.0	11.1	0.0	29	Emera, City of Pensacola, FL, OKALOOSA GAS DISTRICT
Missouri	11.5	0.0	11.2	0.3	16	Spire Inc., Ameren, Algonquin Power & Utilities
Utah	59.6	31.7	12.9	15.0	18	Dominion Energy, Trafigura Group, Chevron
Nevada	13.2	0.2	13.0	0.0	6	Southwest Gas, Berkshire Hathaway, Sky Quarry
North Dakota	54.5	10.0	13.4	30.7	24	NACCO Industries, Marathon Petroleum, Allete
Georgia	14.8	0.0	14.8	0.0	36	Southern Company, Algonquin Power & Utilities, City of Dalton, GA
Massachusetts	15.1	0.0	15.1	0.0	11	National Grid, EverSource Energy, Iberdrola
Alabama	65.5	22.9	16.5	26.1	58	Warrior Met Coal, Vertex Energy, Hunt Consolidated
West Virginia	203.2	2.9	16.5	183.8	202	American Consolidated Natural Resources Inc., Alpha Metallurgical Resources, Core Natural Resources Inc.
Virginia	41.0	0.0	17.3	23.7	58	AltaGas, Energy and Minerals Group, Alpha Metallurgical Resources
Iowa	17.4	0.0	17.4	0.0	15	Berkshire Hathaway, Alliant Energy, Black Hills Corp.
Washington	102.2	84.7	17.6	0.0	14	BP, HF Sinclair Corporation, Marathon Petroleum
Minnesota	90.2	67.3	23.0	0.0	28	Koch Industries, Marathon Petroleum, CenterPoint Energy
Colorado	73.4	9.8	24.0	24.5	34	Kinder Morgan, Xcel Energy, Suncor Energy
New Jersey	67.7	41.2	26.5	0.0	25	Phillips 66, Public Service Enterprise, PBF Energy
Wisconsin	32.2	3.3	28.9	0.0	27	WEC Energy Group, Alliant Energy, Cenovus Energy
Louisiana	434.8	396.4	38.0	0.4	41	Marathon Petroleum, Exxon Mobil, PDVSA (Petroleos de Venezuela S.A.)
Kansas	96.7	55.5	41.2	0.0	23	Oneok, Icahn Enterprises, CHS Inc.
North Carolina	41.6	0.0	41.6	0.0	20	Duke Energy, Dominion Energy, City of Kings Mountain, NC
Michigan	64.3	21.9	42.3	0.0	17	Marathon Petroleum, CMS Energy, DTE Energy
Pennsylvania	176.5	36.0	47.1	93.5	151	Core Natural Resources Inc., Delta Air Lines, UGI Corp.
Illinois	280.9	151.3	49.3	80.3	42	Phillips 66, Exxon Mobil, Foresight Energy
Ohio	127.9	66.8	56.8	4.2	40	Cenovus Energy, MPLX LP, PBF Energy
New York	58.6	0.0	58.6	0.0	25	National Grid, Consolidated Edison, Iberdrola
Indiana	189.1	70.6	66.9	51.6	48	BP, NiSource, Peabody Energy
California	316.4	226.2	90.2	0.0	46	Chevron, Marathon Petroleum, Sempra Energy
Texas	1,290.4	851.5	421.3	17.6	169	Valero Energy, Exxon Mobil, Enterprise Products Partners

The Greenhouse 100 Suppliers Index ranks companies by their supply of products that result in greenhouse gas emissions when the products are released, combusted, or oxidized.

Explanatory notes (For details, see the technical notes)

This edition of the Greenhouse 100 Suppliers ranks companies by C02-equivalent greenhouse gas emissions from their supply of products in 2023 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.