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

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.