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The largest greenhouse-gas emitters, state by state

6,455 facilities reported 2,382,850,556 metric tons CO2e of direct emissions to the EPA's Greenhouse Gas Reporting Program for 2023. Pick a state to see its emitters ranked; the 500 largest nationally each have their own page.

State	Facilities	t CO2e	Largest emitter
Texas	851	379,857,175	Martin Lake
Louisiana	400	144,318,455	CF INDUSTRIES NITROGEN, LLC - DONALDSONVILLE NITROGEN COMPLEX
Florida	175	108,910,230	Crystal River Power Plant
Indiana	186	107,905,930	US Steel Corp - Gary Works
Pennsylvania	281	102,733,194	Lackawanna Energy Center
Ohio	255	99,800,411	Gen J M Gavin
California	365	90,483,578	Los Angeles Refinery (LAR)
Alabama	166	72,030,312	James H Miller Jr
Illinois	216	71,355,071	PRAIRIE STATE GENERATING STATION
Michigan	208	67,545,274	Monroe
Kentucky	134	65,082,785	Ghent
West Virginia	113	64,558,943	Harrison Power Station
Missouri	104	59,526,791	Labadie
Georgia	168	54,791,991	Bowen
Wyoming	64	50,054,465	Laramie River
Oklahoma	161	48,009,084	VERDIGRIS PLT
North Carolina	124	44,271,080	Belews Creek
Iowa	152	43,592,034	Walter Scott Jr. Energy Center
Arizona	89	41,985,086	Springerville Generating Station
Mississippi	112	41,636,844	Daniel Electric Generating Plant
Wisconsin	128	39,354,628	Elm Road Generating Station
Colorado	116	37,798,968	Comanche (470)
Arkansas	95	37,765,106	Independence
Tennessee	120	37,265,031	Cumberland
New York	198	36,379,451	ASTORIA ENERGY LLC & ASTORIA ENERGY II LLC
South Carolina	93	35,136,885	Cross
Virginia	128	34,671,119	Greensville County Power Station
North Dakota	64	34,493,056	Coal Creek
Minnesota	127	34,463,711	Sherburne County
Kansas	105	32,434,384	La Cygne Generating Station
Utah	65	28,276,070	Hunter
Nebraska	73	25,626,497	Gerald Gentleman Station
Washington	98	24,245,871	Centralia
New Mexico	83	20,889,137	Four Corners Steam Elec Station
New Jersey	81	19,352,129	Linden Cogeneration Facility
Montana	28	18,007,481	Colstrip
Nevada	40	15,595,273	Chuck Lenzie Generating Station
Maryland	53	14,414,740	Heidelberg Materials US Cement LLC
Alaska	59	14,212,705	CENTRAL COMPRESSOR PLANT
Oregon	55	13,734,569	Port Westward
Puerto Rico	22	13,729,982	AES - PUERTO RICO COGENERATION PLANT
Connecticut	36	10,889,445	Lake Road Generating Company
Massachusetts	63	8,812,173	Bellingham Power Generation LLC
Hawaii	26	6,706,243	HAWAIIAN ELECTRIC COMPANY (HECO) KAHE GENERATING STATION
South Dakota	39	6,299,962	Big Stone
Delaware	19	5,794,099	Delaware City Refinery
Idaho	36	5,668,302	Rathdrum Power, LLC
Rhode Island	10	4,117,039	Rhode Island State Energy Center
Maine	29	3,421,060	Westbrook Energy Center
New Hampshire	17	2,392,513	Granite Ridge Energy
Guam	9	1,304,859	Marianas Energy Company
U.S. Virgin Islands	5	581,164	VI WATER AND POWER AUTHORITY
Vermont	5	288,825	GLOBALFOUNDRIES U.S. 2 LLC - Vermont Facility
District of Columbia	6	279,350	GSA Central Heating

The 25 largest direct emitters

#	Facility	State	Sector	t CO2e
1	James H Miller Jr	AL	Power Plants	16,558,381
2	Labadie	MO	Power Plants	15,388,715
3	Gen J M Gavin	OH	Power Plants	13,451,174
4	Martin Lake	TX	Power Plants	12,787,949
5	EXXONMOBIL Bt Site	TX	Refineries, Chemicals	12,693,547
6	Oak Grove	TX	Power Plants	12,278,594
7	PRAIRIE STATE GENERATING STATION	IL	Power Plants, Other	11,456,295
8	Monroe	MI	Power Plants	11,413,347
9	Harrison Power Station	WV	Power Plants	11,179,958
10	Laramie River	WY	Power Plants	10,979,532
11	Colstrip	MT	Power Plants	10,967,111
12	US Steel Corp - Gary Works	IN	Metals, Waste	10,928,816
13	Bowen	GA	Power Plants	10,223,193
14	W A Parish	TX	Power Plants	10,110,961
15	Ghent	KY	Power Plants	9,677,872
16	CF INDUSTRIES NITROGEN, LLC - DONALDSONVILLE NITROGEN COMPLEX	LA	Chemicals	9,475,266
17	Cumberland	TN	Power Plants	9,455,486
18	Cardinal	OH	Power Plants	9,267,971
19	Jim Bridger	WY	Power Plants	8,973,791
20	John E Amos	WV	Power Plants	8,750,974
21	Cross	SC	Power Plants	8,508,886
22	Sam Seymour	TX	Power Plants	8,456,123
23	Crystal River Power Plant	FL	Power Plants, Waste	8,392,686
24	Gibson	IN	Power Plants	8,268,672
25	Coal Creek	ND	Power Plants	7,716,347

Only facilities reporting as direct emitters are ranked. Fuel and gas suppliers report the CO2e their products would release when burned elsewhere; that is not their own emissions, so it is never ranked here. Onshore oil and gas production and gathering report by basin rather than by facility and are not included.

Source: EPA Greenhouse Gas Reporting Program, 2023 reporting year, sector-level emissions from data.epa.gov (fetched October 31, 2026). Direct emissions in metric tons CO2e as EPA totals them: emitter sectors only, biogenic CO2 reported separately. Covers facilities that report as direct emitters; most emit 25,000 t CO2e or more a year. Reference only.

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