Largest greenhouse-gas emitters in Washington

98 facilities in Washington reported 24,245,871 metric tons CO2e of direct emissions to the EPA for 2023, 1.0% of the national total for reporting direct emitters. Power Plants accounts for the most (52%). Largest first.

#	Facility	City	Sector	t CO2e
1	Centralia	Centralia	Power Plants	4,536,949
2	BP CHERRY POINT REFINERY	Blaine	Refineries, Chemicals	2,179,352
3	HF Sinclair Puget Sound Refining LLC	Anacortes	Refineries	1,900,999
4	Grays Harbor Energy Center	Elma	Power Plants	1,397,812
5	TESORO CORPORATION-ANACORTES REFINERY	Anacortes	Refineries	1,202,267
6	Chehalis Generation Facility	Chehalis	Power Plants	914,726
7	PHILLIPS 66 FERNDALE REFINERY	Ferndale	Refineries	902,436
8	GOLDENDALE GENERATING STATION	Goldendale	Power Plants	826,172
9	Mint Farm Generation Station	Longview	Power Plants	798,750
10	PSE Ferndale Generating Station	Ferndale	Power Plants	715,257
11	Frederickson Power LP	Tacoma	Power Plants	708,701
12	River Road	Vancouver	Power Plants	700,250
13	Fredonia Generating Station	Mount Vernon	Power Plants	641,257
14	Encogen Generating Station	Bellingham	Power Plants	427,032
15	PUGET SOUND ENERGY - SUMAS	Sumas	Power Plants	389,614
16	NIPPON DYNAWAVE PACKAGING	Longview	Pulp and Paper	376,732
17	ASH GROVE CEMENT COMPANY-SEATTLE	Seattle	Minerals	367,651
18	Cowlitz County Headquarters Landfill	Castle Rock	Waste	317,648
19	PUGET POWER ENERGY-WHITEHORN GEN.STATION	Blaine	Power Plants	308,591
20	KING CNTY SOLID WST CEDAR HILLS LANDFILL	Maple Valley	Waste	249,403
21	ROOSEVELT REGIONAL LANDFILL	Roosevelt	Waste	235,650
22	WESTROCK LONGVIEW LLC	Longview	Pulp and Paper	182,361
23	US OIL & REFINING TACOMA	Tacoma	Refineries	148,012
24	Gas Transmission Northwest Starbuck Sta.#7 (Starbuck, WA)	Starbuck	Petroleum and Natural Gas Systems	133,778
25	Gas Transmission Northwest Pipeline Wallula CS#8	Wallula	Petroleum and Natural Gas Systems	133,440
26	YAKIMA COUNTY TERRACE HTS LANDFILL	Yakima	Waste	130,876
27	Kaiser Aluminum Washington	Spokane Valley	Metals	124,834
28	LAND RECOVERY LANDFILL INDUST	Graham	Waste	119,144
29	WestRock Tacoma Mill	Tacoma	Pulp and Paper	118,774
30	Frederickson PSE	Tacoma	Power Plants	118,684
31	Gas Transmission Northwest Pipeline Rosalia CS#6	Rosalia	Petroleum and Natural Gas Systems	113,467
32	J R SIMPLOT CO	Othello	Waste, Other	107,817
33	Cardinal FG Company	Winlock	Minerals	107,118
34	NORTHWEST PIPELINE GP SUMAS C/S	Sumas	Petroleum and Natural Gas Systems	105,263
35	City of Spokane Waste-to-Energy	Spokane	Waste	100,599
36	TYSON FRESH MEATS	Wallula	Waste, Other	100,445
37	BOISE PAPER	Wallula	Pulp and Paper, Waste	99,158
38	NUCOR STEEL SEATTLE INC	Seattle	Metals	82,396
39	University of Washington Seattle Campus	Seattle	Other	80,936
40	Lamb Weston Inc.	Richland	Other, Waste	74,726
41	NORTHWEST PIPELINE GP MT. VERNON	Mt. Vernon	Petroleum and Natural Gas Systems	74,319
42	WaferTech LLC	Camas	Other	73,391
43	Air Liquide Hydrogen Plant	Anacortes	Chemicals	72,277
44	US ARMY JOINT BASE LEWIS-MCCHORD	Joint Base Lewis-McChord	Waste	71,411
45	NORTHWEST PIPELINE GP - SNOHOMISH C/S	Snohomish	Petroleum and Natural Gas Systems	69,638
46	CenTrio	Seattle	Power Plants	68,651
47	Boeing Commercial Airplanes - Everett	Everett	Other	66,124
48	PORT TOWNSEND PAPER CORP	Port Townsend	Pulp and Paper, Waste	62,519
49	Asotin County Regional Landfill	Clarkston	Waste	60,393
50	LANXESS Corporation Kalama Site	Kalama	Chemicals	60,120
51	WASHINGTON STATE UNIVERSITY	Pullman	Other	59,448
52	MCCAIN FOODS USA INC	Othello	Other, Waste	59,352
53	CERTAINTEED GYPSUM SEATTLE	Seattle	Minerals	55,645
54	GEORGIA-PACIFIC CONSUMER OPERATIONS LLC	Camas	Pulp and Paper, Waste	53,794
55	Matheson - Anacortes Hydrogen Plant	Anacortes	Chemicals	53,407
56	NORTHWEST PIPELINE GP SUMNER C/S	Sumner	Petroleum and Natural Gas Systems	51,136
57	SOLVAY CHEMICALS INC	Longview	Chemicals	50,068
58	GEORGIA-PACIFIC GYPSUM LLC	Tacoma	Minerals	49,843
59	YAKIMA CNTY CHEYNE LANDFILL	Zillah	Waste	47,466
60	Ardagh Glass Inc. (Seattle)	Seattle	Minerals	44,364
61	WASTE MANAGEMENT GREATER WENATCHEE LANDF	East Wenatchee	Waste	42,821
62	Naval Base Kitsap Bremerton	Bremerton	Other	41,809
63	GRANT CNTY EPHRATA LANDFILL 1	Ephrata	Waste	41,759
64	Darigold Inc	Sunnyside	Other	36,711
65	North Pacific Paper Company LLC	Longview	Pulp and Paper	36,395
66	LAMB WESTON INC. PASCO	Pasco	Other	35,750
67	THE BOEING COMPANY	Auburn	Other	33,303
68	Washington Potato Company	Warden	Other	31,872
69	Boulder Park Generating Station	Spokane Valley	Power Plants	31,456
70	U.S. Department of Energy Hanford Site	Richland	Waste, Other	30,899
71	Lamb Weston Holdings Inc	Quincy	Other	29,971
72	Horn Rapids Landfill	Richland	Waste	29,885
73	LAMB WESTON	Connell	Other	26,956
74	COWLITZ COUNTY LANDFILL	Longview	Waste	26,798
75	J. R. Simplot Co.	Moses Lake	Other, Waste	26,271
76	Basic American Foods	Moses Lake	Other	24,110
77	Cathcart Landfill	Snohomish	Waste	22,301
78	Kettle Falls Generating Station	Kettle Falls	Power Plants	22,132
79	NORTHWEST PIPELINE GP GOLDENDALE C/S	Goldendale	Petroleum and Natural Gas Systems	20,982
80	ANALOG DEVICES	Camas	Other	18,421
81	GOODRICH SPOKANE LANDING SYSTEMS, CARBON PRODUCTS	Spokane	Other	18,147
82	Tacoma LNG	Tacoma	Petroleum and Natural Gas Systems, Other	15,537
83	Jackson Prairie Natural Gas Storage	Chehalis	Petroleum and Natural Gas Systems	14,652
84	AGRIUM US INC - KFO	Kennewick	Chemicals	13,400
85	NORTHWEST PIPELINE GP ROOSEVELT C/S	Bickleton	Petroleum and Natural Gas Systems	11,255
86	NORTHWEST PIPELINE GP WASHOUGAL C/S	Washougal	Petroleum and Natural Gas Systems	10,942
87	NORTHWEST PIPELINE GP WILLARD C/S	Cook	Petroleum and Natural Gas Systems	9,153
88	Mutual Materials	Mica	Minerals	8,596
89	ALCOA INTALCO WORKS	Ferndale	Waste, Metals	8,533
90	Milne Fruit Products	Prosser	Other	7,387
91	TACOMA CITY SOLID WASTE FAC	Tacoma	Waste	6,948
92	Resers Fine Foods Inc	Pasco	Other	6,718
93	Avista Landfill	Kettle Falls	Waste	6,486
94	REC SOLAR GRADE SILICON	Moses Lake	Metals	5,956
95	Hidden Valley Landfill	Puyallup	Waste	5,313
96	Cosmopolis Pulp Mill	Cosmopolis	Waste, Pulp and Paper	2,864
97	OLYMPIC VIEW SANITARY LANDFILL INC	Port Orchard	Waste	497
98	Weyerhaeuser Raymond Lumbermill	Raymond	Other	438

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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