| Centralia | TransAlta | 4,536,949 | |
| BP CHERRY POINT REFINERY | BP | 2,179,352 | |
| HF Sinclair Puget Sound Refining LLC | HF Sinclair Corporation | 1,900,999 | |
| TESORO CORPORATION-ANACORTES REFINERY | Marathon Petroleum | 1,202,267 | |
| Chehalis Generation Facility | Berkshire Hathaway | 914,726 | |
| PHILLIPS 66 FERNDALE REFINERY | Phillips 66 | 902,436 | |
| GOLDENDALE GENERATING STATION | Puget Sound Energy | 826,172 | |
| Mint Farm Generation Station | Puget Sound Energy | 798,750 | |
| PSE Ferndale Generating Station | Puget Sound Energy | 715,257 | |
| Frederickson Power LP | Capital Power | 708,701 | |
| River Road | Clark Public Utilities | 700,250 | |
| Grays Harbor Energy Center | Grays Harbor Energy LLC | 698,906 | 50% |
| Grays Harbor Energy Center | Invenergy | 698,906 | 50% |
| Fredonia Generating Station | Puget Sound Energy | 641,257 | |
| Encogen Generating Station | Puget Sound Energy | 427,032 | |
| PUGET SOUND ENERGY - SUMAS | Puget Sound Energy | 389,614 | |
| NIPPON DYNAWAVE PACKAGING | Nippon Paper | 376,732 | |
| ASH GROVE CEMENT COMPANY-SEATTLE | CRH PLC | 367,651 | |
| Cowlitz County Headquarters Landfill | Cowlitz County, WA | 317,648 | |
| PUGET POWER ENERGY-WHITEHORN GEN.STATION | Puget Sound Energy | 308,591 | |
| KING CNTY SOLID WST CEDAR HILLS LANDFILL | King County, WA | 249,403 | |
| ROOSEVELT REGIONAL LANDFILL | Republic Services | 235,650 | |
| WESTROCK LONGVIEW LLC | Smurfit Westrock PLC | 182,361 | |
| US OIL & REFINING TACOMA | Par Pacific Holdings | 148,012 | |
| Gas Transmission Northwest Starbuck Sta.#7 (Starbuck, WA) | TC Energy | 133,778 | |
| Gas Transmission Northwest Pipeline Wallula CS#8 | TC Energy | 133,440 | |
| YAKIMA COUNTY TERRACE HTS LANDFILL | Yakima County, WA | 130,876 | |
| Kaiser Aluminum Washington | Kaiser Aluminum | 124,834 | |
| LAND RECOVERY LANDFILL INDUST | Waste Connections Inc. | 119,145 | |
| WestRock Tacoma Mill | Smurfit Westrock PLC | 118,774 | |
| Frederickson PSE | Puget Sound Energy | 118,684 | |
| Gas Transmission Northwest Pipeline Rosalia CS#6 | TC Energy | 113,467 | |
| J R SIMPLOT CO | J.R. Simplot | 107,817 | |
| Cardinal FG Company | CARDINAL GLASS INDUSTRIES | 107,118 | |
| NORTHWEST PIPELINE GP SUMAS C/S | Williams Companies | 105,263 | |
| City of Spokane Waste-to-Energy | City of Spokane, WA | 100,599 | |
| TYSON FRESH MEATS | Tyson Foods | 100,445 | |
| BOISE PAPER | Packaging Corporation of America | 99,158 | |
| NUCOR STEEL SEATTLE INC | Nucor | 82,396 | |
| University of Washington Seattle Campus | UNIVERSITY OF WASHINGTON BOARD OF REGENTS | 80,936 | |
| Lamb Weston Inc. | Lamb Weston Holdings | 74,726 | |
| NORTHWEST PIPELINE GP MT. VERNON | Williams Companies | 74,319 | |
| WaferTech LLC | TSMC | 73,391 | |
| Air Liquide Hydrogen Plant | Air Liquide | 72,277 | |
| US ARMY JOINT BASE LEWIS-MCCHORD | U.S. Government | 71,411 | |
| NORTHWEST PIPELINE GP - SNOHOMISH C/S | Williams Companies | 69,638 | |
| Puget Sound Energy LDC | Puget Sound Energy | 67,479 | |
| Boeing Commercial Airplanes - Everett | Boeing | 66,124 | |
| PORT TOWNSEND PAPER CORP | Atlas Holdings | 62,519 | |
| Asotin County Regional Landfill | Asotin County, WA | 60,393 | |
| LANXESS Corporation Kalama Site | Lanxess | 60,120 | |
| WASHINGTON STATE UNIVERSITY | State of Washington | 59,448 | |
| MCCAIN FOODS USA INC | McCain Foods | 59,352 | |
| CERTAINTEED GYPSUM SEATTLE | Saint-Gobain | 55,645 | |
| GEORGIA-PACIFIC CONSUMER OPERATIONS LLC | Koch Industries | 53,794 | |
| Matheson - Anacortes Hydrogen Plant | Mitsubishi Chemical | 53,407 | |
| Bonneville Power Administration - Transmission | U.S. Government | 53,344 | |
| NORTHWEST PIPELINE GP SUMNER C/S | Williams Companies | 51,136 | |
| SOLVAY CHEMICALS INC | Solvay | 50,068 | |
| GEORGIA-PACIFIC GYPSUM LLC | Koch Industries | 49,843 | |
| YAKIMA CNTY CHEYNE LANDFILL | Yakima County, WA | 47,466 | |
| Ardagh Glass Inc. (Seattle) | Ardagh Packaging Group | 44,364 | |
| WASTE MANAGEMENT GREATER WENATCHEE LANDF | Waste Management Inc. | 42,821 | |
| Naval Base Kitsap Bremerton | U.S. Government | 41,809 | |
| GRANT CNTY EPHRATA LANDFILL 1 | Grant County, WA | 41,759 | |
| Darigold Inc | Northwest Dairy Association | 36,711 | |
| North Pacific Paper Company LLC | One Rock Capital Partners | 36,395 | |
| LAMB WESTON INC. PASCO | Lamb Weston Holdings | 35,750 | |
| CenTrio | QIC Ltd. | 34,325 | 50% |
| CenTrio | Ullico | 34,325 | 50% |
| THE BOEING COMPANY | Boeing | 33,303 | |
| Washington Potato Company | WASHINGTON POTATO CO | 31,872 | |
| Boulder Park Generating Station | Avista | 31,456 | |
| U.S. Department of Energy Hanford Site | U.S. Government | 30,899 | |
| Lamb Weston Holdings Inc | Lamb Weston Holdings | 29,971 | |
| Horn Rapids Landfill | City of Richland, WA | 29,885 | |
| Cascade Natural Gas Coporation - Washington | MDU Resources | 27,198 | |
| LAMB WESTON | Lamb Weston Holdings | 26,956 | |
| COWLITZ COUNTY LANDFILL | Cowlitz County, WA | 26,798 | |
| J. R. Simplot Co. | J.R. Simplot | 26,271 | |
| Basic American Foods | BASIC AMERICAN FOODS | 24,110 | |
| Cathcart Landfill | Snohomish County, WA | 22,301 | |
| Kettle Falls Generating Station | Avista | 22,132 | |
| NORTHWEST PIPELINE GP GOLDENDALE C/S | Williams Companies | 20,982 | |
| ANALOG DEVICES | Analog Devices Inc. | 18,421 | |
| GOODRICH SPOKANE LANDING SYSTEMS, CARBON PRODUCTS | RTX Corporation | 18,147 | |
| Avista Corporation-WA | Avista | 16,268 | |
| Tacoma LNG | Puget Sound Energy | 15,537 | |
| Jackson Prairie Natural Gas Storage | Jackson Prairie Natural Gas Storage (facility) | 14,652 | |
| AGRIUM US INC - KFO | Nutrien Ltd. | 13,400 | |
| NORTHWEST PIPELINE GP ROOSEVELT C/S | Williams Companies | 11,255 | |
| NORTHWEST PIPELINE GP WASHOUGAL C/S | Williams Companies | 10,942 | |
| Puget Sound Energy T&D | Puget Sound Energy | 10,868 | |
| NORTHWEST PIPELINE GP WILLARD C/S | Williams Companies | 9,153 | |
| Mutual Materials | MUTUAL MATERIALS CO | 8,596 | |
| ALCOA INTALCO WORKS | Alcoa | 8,533 | |
| Milne Fruit Products | MFP HOLDINGS | 7,387 | |
| TACOMA CITY SOLID WASTE FAC | City of Tacoma, WA | 6,948 | |
| Resers Fine Foods Inc | Reser's Fine Foods | 6,718 | |
| Avista Landfill | Avista | 6,486 | |
| REC SOLAR GRADE SILICON | REC Silicon | 5,956 | |
| Hidden Valley Landfill | Waste Connections Inc. | 5,313 | |
| Cosmopolis Pulp Mill | Charlestown Investments | 2,864 | |
| Avista Corporation | Avista | 1,438 | |
| Seattle City Light | City of Seattle, WA | 862 | |
| OLYMPIC VIEW SANITARY LANDFILL INC | Waste Management Inc. | 497 | |
| Weyerhaeuser Raymond Lumbermill | Weyerhaeuser | 438 | |