Largest greenhouse-gas emitters in Arizona

89 facilities in Arizona reported 41,985,086 metric tons CO2e of direct emissions to the EPA for 2023, 1.8% of the national total for reporting direct emitters. Power Plants accounts for the most (84%). Largest first.

#	Facility	City	Sector	t CO2e
1	Springerville Generating Station	Springerville	Power Plants	7,022,190
2	Gila River Power Station	Gila Bend	Power Plants	4,049,874
3	Coronado Generating Station	St Johns	Power Plants, Waste	3,663,723
4	Mesquite Generating Station	Arlington	Power Plants	3,009,090
5	Santan	Gilbert	Power Plants	2,329,387
6	Cholla	Joseph City	Power Plants	2,078,035
7	Redhawk Generating Facility	Arlington	Power Plants	1,670,569
8	Apache Station	Cochise	Power Plants	1,458,091
9	Griffith Energy Project	Golden Valley	Power Plants	1,435,175
10	APS West Phoenix Power Plant	Phoenix	Power Plants	1,413,917
11	Arlington Valley Energy Facility	Arlington	Power Plants	1,386,239
12	Desert Basin Generating Station	Casa Grande	Power Plants	1,240,576
13	South Point Energy Center, LLC	Mohave Valley	Power Plants	1,108,067
14	Harquahala Generating Company	Tonopah	Power Plants	879,564
15	CalPortland Company Rillito Plant	Rillito	Minerals	789,422
16	LHOIST NORTH AMERICA	Peach Springs	Minerals	787,420
17	PHOENIX CEMENT COMPANY\S CLARKDALE FACILITY	Clarkdale	Minerals	768,127
18	Irvington Generating Station	Tucson	Power Plants	751,196
19	Kyrene Generating Station	Tempe	Power Plants	485,283
20	Drake Cement	Paulden	Minerals	483,450
21	APACHE NITROGEN PRODUCTS - PLANT	St. David	Chemicals	415,929
22	INTEL CORPORATION - Ocotillo Campus	Chandler	Other	378,991
23	Ocotillo Power Plant	Tempe	Power Plants	327,235
24	Sundance Power Plant	Casa Grande	Power Plants	287,951
25	Coolidge Generating Station	Randolph	Power Plants	241,403
26	SR 85 LANDFILL	Buckeye	Waste	227,968
27	Yucca Power Plant	Yuma	Power Plants	149,196
28	South Yuma County Landfill	Yuma	Waste	139,655
29	APS Saguaro Power Plant	Red Rock	Power Plants	127,427
30	CITY OF FLAGSTAFF - CINDER LAKE LANDFILL	Flagstaff	Waste	98,814
31	Agua Fria Generating Station	Glendale	Power Plants	97,741
32	EPNG Station 6750 Leupp, AZ	Leupp	Petroleum and Natural Gas Systems	97,540
33	Northwest Regional Landfill	Surprise	Waste	95,960
34	Novo Biopower	Snowflake	Waste, Power Plants	93,715
35	EPNG Station 6796 Window Rock, AZ	St. Michaels	Petroleum and Natural Gas Systems	91,296
36	EPNG Station 6794 Williams, AZ	Williams	Petroleum and Natural Gas Systems	86,047
37	FREEPORT-MCMORAN MIAMI INC	Claypool	Metals	84,248
38	NXP Semiconductors Chandler Site	Chandler	Other	83,508
39	CITY OF PHOENIX 27TH AVE LANDFILL	Phoenix	Waste	83,339
40	YUMA COGENERATION ASSOCIATES	Yuma	Power Plants	81,103
41	University of Arizona	Tucson	Other	79,182
42	Microchip Technology Inc.	Tempe	Other	77,657
43	CITY OF GLENDALE - LANDFILL	Glendale	Waste	69,853
44	EPNG Station 6795 Willcox, AZ	Willcox	Petroleum and Natural Gas Systems	68,395
45	CMC Steel Arizona	Mesa	Metals	67,984
46	Marana Regional Landfill	Marana	Waste	67,606
47	STATION #3 - LEUPP CMP STN	Leupp	Petroleum and Natural Gas Systems	65,390
48	ARIZONA STATE UNIVERSITY	Tempe	Other	63,883
49	STATION #2 - FLAGSTAFF CMP STN	Bellemont	Petroleum and Natural Gas Systems	63,422
50	Lone Cactus Landfill	Phoenix	Waste	62,395
51	Durham Regional Landfill	Florence	Waste	62,295
52	Tangerine Landfill	Marana	Waste	60,483
53	Black Mountain Generating Station	Golden Valley	Power Plants	54,594
54	QUEEN CREEK MSW LANDFILL	Queen Creek	Waste	53,735
55	EPNG Station 6715 Dilkon, AZ	Dilkon	Petroleum and Natural Gas Systems	47,304
56	North Baja Ehrenberg CS	Ehrenberg	Petroleum and Natural Gas Systems	46,840
57	LAKE HAVASU LANDFILL	Lake Havasu City	Waste	45,662
58	LA PAZ COUNTY LANDFILL	Parker	Waste	45,304
59	Freeport-McMoRan Morenci	Morenci	Other	45,137
60	EPNG Station 6770 Oracle, AZ	Oracle	Petroleum and Natural Gas Systems	44,447
61	UNITED DAIRYMEN OF ARIZONA - DAIRY	Tempe	Other	41,284
62	EPNG Station 1775 Mojave Topock, AZ	Topock	Petroleum and Natural Gas Systems	38,658
63	EPNG Station 6755 Navajo, AZ	Ganado	Petroleum and Natural Gas Systems	38,482
64	EPNG Station 6702 Cimarron, AZ	Willcox	Petroleum and Natural Gas Systems	38,390
65	Salt River Landfill	Scottsdale	Waste	35,450
66	EPNG Station 6793 Wenden, AZ	Tonopah	Petroleum and Natural Gas Systems	34,849
67	EPNG Station 6701 Tom Mix, AZ	Saddlebrook	Petroleum and Natural Gas Systems	33,750
68	BUTTERFIELD STATION LANDFILL	Mobile	Waste	32,808
69	EPNG Station San Simon, AZ	San Simon	Petroleum and Natural Gas Systems	32,653
70	EPNG Station 6735 Hackberry, AZ	Hackberry	Petroleum and Natural Gas Systems	32,554
71	APACHE JUNCTION LANDFILL	Apache Junction	Waste	32,298
72	COPPER MOUNTAIN LANDFILL	Wellton	Waste	31,879
73	GRAY WOLF REGIONAL LANDFILL	Dewey	Waste	30,520
74	Casa Grande Solid Waste Municipal Landfill	Casa Grande	Waste	28,178
75	Los Reales Landfill	Tucson	Waste	26,984
76	IRONWOOD LANDFILL	Florence	Waste	25,558
77	Mohave Valley Landfill	Fort Mohave	Waste	25,042
78	Abbott Laboratories	Casa Grande	Other	23,170
79	CACTUS LANDFILL	Eloy	Waste	22,942
80	Northern Arizona University	Flagstaff	Other	19,338
81	CAVE CREEK MSW LANDFILL	Cave Creek	Waste	19,227
82	CITY OF PHOENIX - SKUNK CREEK LANDFILL	Phoenix	Waste	16,428
83	SOUTHWEST REGIONAL LANDFILL	Buckeye	Waste	14,896
84	EPNG Station 6741 Alamo Lake, AZ	Wenden	Petroleum and Natural Gas Systems	13,218
85	PAINTED DESERT LANDFILL	Joseph City	Waste	3,350
86	NatureSweet USA LLC. - Willcox Facility	Willcox	Other	1,622
87	De Moss Petrie Generating Station	Tucson	Power Plants	998
88	SGP Sierrita Compressor Station	Tucson	Petroleum and Natural Gas Systems	270
89	Mineral Park Mine	Golden Valley	Other	261

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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