(Click on column headers to re-sort table: current sort is by Greenhouse 100 Rank.)

Greenhouse 100 Rank	Parent corporation or entity	2023 Emissions (CO2 equivalent metric tons)	Percentage of 2023 U.S. greenhouse gas emissions from all sources	EJ: Poor	EJ: Minority	% of CO2 equivalent emissions from a single facility	Industrial Sectors
1	Vistra Energy	86,320,993	1.4%	12%	45%	15%	Power Plants
2	Southern Company	76,333,265	1.2%	13%	49%	22%	Power Plants, Petroleum and Natural Gas Systems, Other
3	Duke Energy	73,741,584	1.2%	12%	30%	11%	Power Plants, Petroleum and Natural Gas Systems, Other, Waste
4	Energy Capital Partners	68,011,268	1.1%	14%	65%	20%	Power Plants, Metals, Other, Waste
5	Berkshire Hathaway	59,733,781	0.9%	13%	37%	15%	Power Plants, Petroleum and Natural Gas Systems, Minerals, Other, Metals, Chemicals, Refineries
6	American Electric Power	49,887,162	0.8%	16%	23%	18%	Power Plants, Other
7	Exxon Mobil	41,741,329	0.7%	15%	60%	30%	Refineries, Petroleum and Natural Gas Systems, Power Plants, Chemicals, Other
8	U.S. Government	41,645,400	0.7%	15%	47%	23%	Power Plants, Other, Waste, Petroleum and Natural Gas Systems, Chemicals
9	NextEra Energy	40,964,269	0.6%	13%	59%	17%	Power Plants, Petroleum and Natural Gas Systems, Other
10	Xcel Energy	39,257,530	0.6%	12%	41%	18%	Power Plants, Petroleum and Natural Gas Systems, Other
11	Entergy	37,126,848	0.6%	17%	51%	14%	Power Plants, Other, Petroleum and Natural Gas Systems
12	Phillips 66	29,993,414	0.5%	12%	59%	10%	Refineries, Petroleum and Natural Gas Systems, Chemicals, Power Plants, Waste, Other
13	Dominion Energy	29,414,585	0.5%	14%	48%	12%	Power Plants, Petroleum and Natural Gas Systems, Other
14	Marathon Petroleum	28,537,868	0.4%	14%	73%	23%	Refineries, Power Plants, Chemicals, Petroleum and Natural Gas Systems, Other
15	Cleveland-Cliffs	27,444,076	0.4%	19%	54%	28%	Metals, Minerals, Other, Waste
16	PPL Corp.	26,919,146	0.4%	16%	30%	36%	Power Plants, Petroleum and Natural Gas Systems, Other
17	Koch Industries	23,993,811	0.4%	12%	47%	16%	Chemicals, Refineries, Pulp and Paper, Minerals, Waste, Other
18	Evergy Inc.	23,874,346	0.4%	15%	37%	28%	Power Plants, Other
19	Valero Energy	23,532,141	0.4%	16%	72%	13%	Refineries, Chemicals, Other
20	DTE Energy	23,206,531	0.4%	17%	28%	49%	Power Plants, Petroleum and Natural Gas Systems, Metals
21	Chevron	22,576,410	0.4%	13%	67%	21%	Refineries, Petroleum and Natural Gas Systems, Chemicals, Power Plants, Other, Waste
22	NRG Energy	22,538,835	0.4%	8%	66%	45%	Power Plants
23	Energy Transfer	21,716,387		13%	63%	12%	Petroleum and Natural Gas Systems, Other
24	CF Industries	20,579,424		14%	45%	46%	Chemicals
25	Nippon Steel	19,922,393		17%	46%	55%	Metals, Waste, Other
26	Ameren	19,790,345		9%	28%	78%	Power Plants, Petroleum and Natural Gas Systems, Other
27	WEC Energy Group	19,610,165		12%	33%	30%	Power Plants, Petroleum and Natural Gas Systems
28	ArcLight Capital Partners	19,294,209		15%	62%	15%	Power Plants, Petroleum and Natural Gas Systems
29	Hilcorp Energy	18,356,141		19%	71%	19%	Petroleum and Natural Gas Systems, Refineries
30	CMS Energy	17,400,136		20%	49%	38%	Power Plants, Petroleum and Natural Gas Systems, Other
31	LS Power	16,986,389		16%	63%	15%	Power Plants, Other
32	Basin Electric Power Cooperative	16,630,714		10%	15%	32%	Power Plants, Chemicals, Minerals, Other
33	Dow Inc.	16,442,168		16%	49%	32%	Chemicals, Power Plants, Waste, Petroleum and Natural Gas Systems, Other
34	Associated Electric Cooperative Inc	15,571,682		17%	34%	38%	Power Plants
35	AES Corp.	15,564,413		14%	64%	31%	Power Plants
36	FirstEnergy	15,338,451		16%	10%	73%	Power Plants, Other
37	Santee Cooper	14,096,573		16%	38%	60%	Power Plants
38	Air Products & Chemicals	14,072,905		14%	73%	17%	Chemicals
39	Alliant Energy	13,682,648		10%	19%	34%	Power Plants, Petroleum and Natural Gas Systems
40	Pinnacle West Capital	13,249,517		17%	69%	54%	Power Plants, Other
41	Enterprise Products Partners	12,602,167		19%	74%	22%	Petroleum and Natural Gas Systems, Other, Chemicals
42	Amrize Ltd.	12,212,833		11%	45%	24%	Minerals
43	Waste Management Inc.	11,650,460		12%	52%	2%	Waste
44	Salt River Project	11,618,712		10%	42%	32%	Power Plants, Other, Waste
45	ConocoPhillips	11,600,088		15%	72%	26%	Petroleum and Natural Gas Systems, Refineries
46	Prairie State Energy Campus (facility)	11,456,295		10%	6%	100%	Power Plants, Other
47	Occidental Petroleum	11,349,830		13%	62%	23%	Petroleum and Natural Gas Systems, Chemicals, Power Plants, Other
48	Lower Colorado River Authority	11,194,503		10%	34%	76%	Power Plants, Other
49	Kinder Morgan	11,096,589		19%	73%	4%	Petroleum and Natural Gas Systems, Refineries, Other
50	BP	11,089,116		19%	78%	47%	Refineries, Petroleum and Natural Gas Systems, Power Plants, Chemicals, Other
51	Laramie River (single power plant)	10,979,532		13%	15%	100%	Power Plants
52	Colstrip Power Plant (single power plant)	10,967,111		8%	29%	100%	Power Plants
53	Capital Power	10,872,826		10%	25%	27%	Power Plants, Other
54	Williams Companies	10,798,295		11%	43%	20%	Petroleum and Natural Gas Systems
55	Republic Services	10,766,776		13%	60%	4%	Waste
56	PBF Energy	10,762,336		14%	63%	32%	Refineries, Power Plants, Chemicals
57	CPS Energy	10,639,613		19%	78%	53%	Power Plants, Petroleum and Natural Gas Systems
58	Archer Daniels Midland	10,585,368		12%	22%	36%	Other, Chemicals, Pulp and Paper, Waste
59	Shell PLC	10,082,999		13%	48%	41%	Refineries, Chemicals, Power Plants, Petroleum and Natural Gas Systems, Other
60	Linde	10,074,068		18%	66%	16%	Chemicals
61	Fortis	9,904,460		18%	58%	71%	Power Plants, Petroleum and Natural Gas Systems, Other
62	Cheniere Energy	9,730,828		14%	59%	64%	Petroleum and Natural Gas Systems
63	Macquarie	9,727,156		13%	52%	41%	Power Plants, Waste
64	Targa Resources	9,468,078		20%	75%	38%	Petroleum and Natural Gas Systems
65	Buckeye Power	9,421,840		16%	11%	98%	Power Plants
66	Core Natural Resources Inc.	9,357,372		14%	10%	30%	Other
67	Carlyle Group	9,347,749		14%	50%	24%	Power Plants, Chemicals
68	OGE Energy	9,039,165		15%	42%	23%	Power Plants, Other
69	Constellation Energy Corporation	8,941,321		13%	52%	32%	Power Plants, Petroleum and Natural Gas Systems
70	Oneok	8,624,056		17%	66%	8%	Petroleum and Natural Gas Systems, Refineries
71	Ares Management	8,548,677		14%	64%	34%	Power Plants, Petroleum and Natural Gas Systems
72	LyondellBasell Industries	8,477,769		18%	79%	23%	Chemicals, Refineries, Other
73	Saudi Arabian Oil Company (Saudi Aramco)	8,395,952		15%	54%	60%	Refineries, Chemicals, Other, Power Plants, Waste
74	Nebraska Public Power District	8,317,520		7%	13%	86%	Power Plants, Other
75	Tenaska	8,273,025		9%	19%	29%	Power Plants
76	East Kentucky Power Cooperative	8,165,153		20%	10%	90%	Power Plants, Other
77	PUERTO RICO ELECTRIC POWER AUTHORITY	8,138,546		37%	99%	26%	Power Plants, Other
78	HF Sinclair Corporation	8,001,526		14%	36%	24%	Refineries, Chemicals, Petroleum and Natural Gas Systems
79	PDVSA (Petroleos de Venezuela S.A.)	7,818,236		12%	44%	57%	Refineries, Chemicals
80	Omaha Public Power District	7,767,450		14%	36%	76%	Power Plants
81	Rainbow Energy	7,716,347		7%	8%	100%	Power Plants
82	Emera	7,664,304		14%	55%	39%	Power Plants, Petroleum and Natural Gas Systems, Other
83	Plant Scherer (single power plant)	7,612,539		13%	28%	100%	Power Plants
84	Heidelberg Materials	7,269,588		11%	34%	26%	Minerals
85	Lotus Infrastructure Partners	7,209,076		11%	41%	42%	Power Plants
86	Oglethorpe Power	7,110,679		13%	39%	48%	Power Plants
87	American Consolidated Natural Resources Inc.	6,983,315		13%	12%	30%	Other
88	Seminole Electric Cooperative	6,972,461		22%	36%	85%	Power Plants, Waste
89	TC Energy	6,763,542		17%	47%	3%	Petroleum and Natural Gas Systems
90	Talen Energy Corporation	6,749,060		13%	41%	25%	Power Plants
91	Invenergy	6,641,273		13%	20%	56%	Power Plants
92	Westlake Chemical	6,616,314		16%	35%	41%	Chemicals, Power Plants, Other
93	Formosa Plastics	6,434,339		16%	64%	82%	Chemicals, Power Plants, Petroleum and Natural Gas Systems
94	Buzzi Unicem	6,381,719		11%	43%	24%	Minerals
95	Atlas Holdings	6,348,208		13%	35%	38%	Power Plants, Metals, Pulp and Paper, Other, Waste, Minerals
96	Air Liquide	6,301,055		13%	66%	32%	Chemicals, Power Plants
97	CRH PLC	6,188,203		9%	46%	21%	Minerals
98	Eastman Chemical	6,094,463		14%	21%	60%	Chemicals, Power Plants, Waste, Other
99	Hallador Energy	5,964,330		10%	13%	78%	Power Plants, Other
100	Smurfit Westrock PLC	5,861,081		14%	43%	17%	Pulp and Paper, Waste

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.  
Sources: US EPA, US Census, and CTIP.

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