| Gen J M Gavin | Energy Capital Partners | 13,451,174 | |
| Cardinal | Buckeye Power | 9,267,971 | |
| Kyger Creek | American Electric Power | 4,880,396 | |
| Cleveland-Cliffs Cleveland Works LLC | Cleveland-Cliffs | 4,269,452 | |
| Hanging Rock Power Company, LLC | Vistra Energy | 4,157,062 | |
| Cleveland-Cliffs Steel Corporation - Middletown Works | Cleveland-Cliffs | 3,512,088 | |
| South Field Energy | Advanced Power | 2,971,407 | |
| Miami Fort Generating Station | Vistra Energy | 2,862,552 | |
| Lordstown Energy Center | ArcLight Capital Partners | 2,268,187 | |
| Carroll County Energy, LLC | Advanced Power | 2,192,382 | |
| Washington Power Generation LLC | Vistra Energy | 2,074,696 | |
| Waterford Plant | Energy Capital Partners | 2,063,490 | |
| Dresden Energy Facility | American Electric Power | 1,526,709 | |
| Toledo Refining Company | PBF Energy | 1,470,014 | |
| Guernsey Power Station | Blackrock | 1,468,049 | 50% |
| Guernsey Power Station | Caithness Energy | 1,468,049 | 50% |
| PCS Nitrogen Ohio, L.P. | Nutrien Ltd. | 1,370,575 | |
| Long Ridge Energy Generation | FORTRESS TRANSPORTATION AND INFRASTRUCTURE INVESTORS LLC | 1,342,071 | |
| Rolling Hills Generating LLC | Capital Power | 1,340,778 | |
| MARTIN MARIETTA MAGNESIA SPECIALTIES, LLC | Martin Marietta Materials | 1,314,750 | |
| AMP Fremont Energy Center | American Municipal Power | 1,277,562 | |
| Middletown Energy Center | NTE Energy | 1,231,069 | |
| Lima Refinery | Cenovus Energy | 1,205,035 | |
| Oregon Clean Energy Center | Ares Management | 1,184,009 | 50% |
| Oregon Clean Energy Center | I Squared Capital | 1,184,009 | 50% |
| W H Sammis | Hull Street Energy | 1,076,241 | |
| HAVERHILL COKE COMPANY, LLC | SunCoke Energy | 921,343 | |
| Ohio Refining Company LLC | Cenovus Energy | 887,438 | |
| IronUnits LLC | Cleveland-Cliffs | 802,938 | |
| West Lorain | Lotus Infrastructure Partners | 717,758 | |
| APEX ENVIRONMENTAL, LLC - SANITARY LANDFILL (0641000223) | Interstate Waste Services | 699,295 | |
| Madison Generating Station | Duke Energy | 634,517 | |
| Tait Electric Generating Station | Rockland Capital | 614,985 | |
| Bay Shore | ArcLight Capital Partners | 609,566 | 50% |
| Bay Shore | Olympus Holdings | 609,566 | 50% |
| LINDE INC | Linde | 593,125 | |
| Dominion Energy Ohio - The East Ohio Gas Co (Dist) (Ohio) | Dominion Energy | 539,589 | |
| Canton Refinery | Marathon Petroleum | 536,090 | |
| CARMEUSE OHIO INC - MAPLEGROVE LIME PLANT | Carmeuse | 485,544 | |
| Fairborn Cement Company LLC | Eagle Materials | 478,200 | |
| Troy Energy, LLC | LS Power | 476,085 | |
| NORTH STAR BLUESCOPE STEEL LLC * | BlueScope Steel | 442,491 | |
| Hopedale Fractionation Facility | MPLX LP | 433,454 | |
| SunCoke Energy Middletown Operations | SunCoke Energy | 429,704 | |
| Holcim US - Paulding Plant (INCLUDING SYSTECH ENV CORP) | Amrize Ltd. | 358,128 | |
| NOBLE ROAD LANDFILL (0370000134) | RUMPKE CONSOLIDATED COS INC | 357,603 | |
| DGOC 160 Boosting and Gathering | Diversified Energy | 347,670 | |
| Encino Energy (EAP Ohio LLC) | EOG Resources | 346,323 | |
| DGOC 160 Production | Diversified Energy | 339,894 | |
| BEECH HOLLOW SANITARY LANDFILL * | RUMPKE CONSOLIDATED COS INC | 325,170 | |
| TIMKENSTEEL CORP (1576000613) | Metallus Inc. | 320,347 | |
| Pixelle Specialty Solutions LLC | H.I.G. Capital | 312,941 | |
| CARMEUSE LIME, INC. GRAND RIVER OPERATIONS (0243030257) | Carmeuse | 304,546 | |
| Ferroglobe USA Metallurgical Inc. FKA-GLOBE METALLURGICAL INC. (0684000105) | Ferroglobe | 293,877 | |
| Rumpke Sanitary Landfill | RUMPKE CONSOLIDATED COS INC | 284,432 | |
| FRANKLIN COUNTY SANITARY LANDFILL | Solid Waste Authority of Central Ohio | 279,731 | |
| INEOS Pigments USA, Inc.- Plant 2 | Ineos | 273,238 | |
| Frank M Tait Station | Rockland Capital | 263,255 | |
| Columbus Compressor Station | Blackstone | 221,168 | |
| CRAWFORD COUNTY SANITARY LANDFILL | Crawford County, OH | 219,995 | |
| Chandlersville Compressor Station | Blackstone | 218,515 | |
| PIKE SANITATION INC | RUMPKE CONSOLIDATED COS INC | 217,424 | |
| KRATON Corporation | DL Chemical | 209,507 | |
| MagRetech LLC | MAGNESIUM REFINING TECHNOLOGIES INC | 206,100 | |
| Marion Ethanol LLC d/b/a Poet Biorefining - Marion | Poet LLC | 205,275 | |
| Darby Electric Generating Station | Energy Capital Partners | 200,709 | |
| THE ANDERSONS MARATHON HOLDINGS LLC | Andersons Inc. | 197,846 | |
| Valero Bloominburg Plant | Valero Energy | 196,764 | |
| RUMPKE WASTE INC BROWN COUNTY SANITARY LANDFILL * | RUMPKE CONSOLIDATED COS INC | 195,416 | |
| AEP Corporate SF6 Emissions | American Electric Power | 191,571 | |
| Pilkington North America, Inc. | Nippon Sheet Glass | 186,764 | |
| Woodsdale | Duke Energy | 182,345 | |
| UNIVERSITY OF CINCINNATI | University System of Ohio | 172,058 | |
| Washington Court House Compressor Station | Blackstone | 171,079 | |
| Hanoverton | Enbridge | 170,451 | |
| Richland Peaking Station | Vistra Energy | 170,328 | |
| CARGILL INCORPORATED | Cargill | 163,393 | |
| Cleveland-Cliffs Warren | Cleveland-Cliffs | 162,965 | |
| GRAYMONT DOLIME OH INC * | GRAYMONT LTD | 156,482 | |
| Vallourec Star | Vallourec | 152,234 | |
| LORAIN COUNTY LANDFILL I & II | Republic Services | 151,855 | |
| ERAMET MARIETTA INC. (0684020006) | Eramet Group | 138,046 | |
| Tunnel Hill Reclamation | Macquarie | 135,840 | |
| The Ohio State University | State of Ohio | 134,702 | |
| WILLIAMS COUNTY LANDFILL | Republic Services | 133,403 | |
| Eureka Midstream, LLC | EQT Corp. | 132,583 | |
| CHARTER STEEL CLEVELAND * | CHARTER MANUFACTURING CO INC | 130,935 | |
| Belpre Carbon Black Plant | Orion Engineered Carbons | 129,981 | |
| Athens-Hocking Landfill, Inc. | RUMPKE CONSOLIDATED COS INC | 129,003 | |
| POET BIOREFINING LEIPSIC, LLC | Poet LLC | 127,985 | |
| Cleveland-Cliffs Steel Corporation - Mansfield Works | Cleveland-Cliffs | 126,556 | |
| Pratt Paper (OH) LLC | Pratt Industries | 124,612 | |
| POET BIOREFINING | Poet LLC | 120,280 | |
| INEOS NITRILES USA LLC | Ineos | 118,079 | |
| JSW Steel USA Ohio, Inc. | Jindal Group | 116,721 | |
| Robert P Mone | Buckeye Power | 112,266 | |
| Matheson - LIMA III PLANT | Mitsubishi Chemical | 111,875 | |
| Duke Energy Ohio Gas Operation | Duke Energy | 107,726 | |
| Rover - Mainline CS #1 | Energy Transfer | 107,189 | |
| Honda Development & Manufacturing of America, LLC | Honda | 106,936 | |
| INEOS Pigments USA, Inc.- Plant 1 | Ineos | 105,055 | |
| Rover - Mainline CS #2 | Energy Transfer | 104,801 | |
| NSG Glass North America, Inc. | Nippon Sheet Glass | 100,282 | |
| Gulfport Energy Appalachian Basin 160-A Eastern Overthrust Region | Gulfport Energy | 99,604 | |
| Guardian Lima | GUARDIAN ENERGY LLC | 98,695 | |
| ERIE COUNTY SANITARY LANDFILL | Erie County, OH | 95,418 | |
| CARBON LIMESTONE LANDFILL | Republic Services | 93,907 | |
| Harrison Hub Fractionation Plant | Williams Companies | 93,062 | |
| ISP LIMA LLC | Ashland Inc. | 92,551 | |
| Leesville Land, LLC | LEESVILLE LAND LLC | 91,476 | |
| Sofidel America | Sofidel Group | 83,413 | |
| Procter & Gamble Company - Ivorydale | Procter & Gamble | 83,142 | |
| Matheson - LIMA I PLANT | Mitsubishi Chemical | 82,794 | |
| Rover - Mainline CS #3 | Energy Transfer | 82,614 | |
| U.S. AIR FORCE WRIGHT-PATTERSON AFB OH | U.S. Government | 82,511 | |
| Emery Oleochemicals, LLC | PTT Group | 81,042 | 50% |
| Emery Oleochemicals, LLC | Sime Darby Group | 81,042 | 50% |
| OWENS-BROCKWAY GLASS CONTAINER INC PLANT NO 12 | O-I Glass | 80,884 | |
| Matheson - LIMA II PLANT | Mitsubishi Chemical | 80,852 | |
| FirstEnergy Substation Group | FirstEnergy | 80,315 | |
| Athens | Enbridge | 80,066 | |
| DOVER MUNICIPAL LIGHT PLANT (0679010146) | City of Dover, OH | 79,991 | |
| CAMPBELL SOUP COMPANY (0335010105) | Campbell Soup | 79,401 | |
| Dominion Energy Ohio - Appalachian Basin (Gath) | Dominion Energy | 78,974 | |
| Solvay Specialty Polymers USA, L.L.C. | Solvay | 78,716 | |
| TGP Station 204 Albany | Kinder Morgan | 78,184 | |
| DEFIANCE COUNTY LANDFILL | Defiance County, OH | 77,976 | |
| McWane Ductile - Ohio | McWane | 77,169 | |
| Plasma Compressor Station | EQT Corp. | 75,386 | |
| ANCHOR HOCKING GLASS CO PLANT NO 1 * | ONEIDA GROUP | 75,179 | |
| MORTON SALT, INC. | Stone Canyon Industries | 75,130 | |
| BUNGE NORTH AMERICA | Bunge | 74,720 | |
| Alpont LLC | INTERSTATE CHEMICAL CO INC | 73,769 | |
| MEDICAL CENTER COMPANY | Medical Center Company | 72,723 | |
| Republic Steel - Canton Plant | Industrias CH | 71,750 | |
| Libbey Glass Inc. | Libbey | 71,038 | |
| IMCO RECYCLING OF OHIO LLC | Aditya Birla Group | 70,388 | |
| Howmet Aerospace Inc. - Cleveland Works | Howmet Aerospace | 70,330 | |
| TORO ENERGY OF OHIO - AMERICA S LANDFILL GAS | Waste Management Inc. | 69,823 | |
| Cadiz Gas Processing Plant | MPLX LP | 69,812 | |
| TGP Station 209 CAMBRIDGE (Cumberland) | Kinder Morgan | 68,512 | |
| NUCOR STEEL MARION, INC. (0351010017) | Nucor | 67,862 | |
| THE BELDEN BRICK COMPANY (0679000118) | Belden Brick | 66,879 | |
| Greif Packaging, LLC | Greif Inc. | 64,836 | |
| CARGILL INC SOY PROCESSING PLANT * | Cargill | 63,971 | |
| ARCELORMITTAL TUBULAR PRODUCTS USA LLC | ArcelorMittal | 61,587 | |
| GE Aerospace, Evendale Plant (1431150060) | General Electric | 61,428 | |
| PRO-TEC Coating Company | Kobe Steel | 60,439 | 50% |
| PRO-TEC Coating Company | Nippon Steel | 60,439 | 50% |
| Clyde | Enbridge | 59,332 | |
| Columbia Gas Transmission, LLC-Summerfield Compressor Station | TC Energy | 59,249 | |
| Wadsworth | Enbridge | 58,850 | |
| MAHONING LANDFILL | Waste Management Inc. | 57,131 | |
| Cherokee Run Landfill | Republic Services | 56,342 | |
| CORIX CLEVELAND THERMAL GENERATING LP | Corix | 55,947 | |
| WIN Waste Innovations of Seneca County | Macquarie | 54,457 | |
| Celina Landfill | Republic Services | 53,952 | |
| Cleveland Clinic | Cleveland Clinic | 53,700 | |
| LAKE COUNTY SOLID WASTE FACILITY * | Lake County, OH | 50,927 | |
| Kensington Cryogenic Processing Plant | Williams Companies | 50,906 | |
| JOHNS MANVILLE | Berkshire Hathaway | 50,625 | |
| Terves Inc | PMT Group | 50,270 | |
| FCA TOLEDO ASSEMBLY COMPLEX | Stellantis | 49,812 | |
| Kimble Sanitary Landfill | KIMBLE CO | 48,634 | |
| OHIO WASTE SYS SUBURBAN SOUTH RECYCLING & DISPOSAL | Waste Management Inc. | 48,598 | |
| Johns Manville | Berkshire Hathaway | 47,168 | |
| Trammo Nitrogen Products, Inc. | Trammo | 46,591 | |
| Canton Drop Forge | Park-Ohio Holdings | 46,135 | |
| GENEVA LANDFILL | Waste Management Inc. | 45,378 | |
| CARGILL INC SALT DIV | Cargill | 44,838 | |
| COOPER TIRE AND RUBBER CO * | Goodyear Tire & Rubber | 44,700 | |
| Essity Operations Wausau LLC | Essity | 44,524 | |
| OWENS CORNING INSULATING SYSTEMS, LLC - NEWARK | Owens Corning | 43,789 | |
| Colerain | Enbridge | 43,777 | |
| KENT STATE UNIVERSITY HEATING PLANT (1667040085) | University System of Ohio | 42,182 | |
| GRAPHIC PACKAGING INT INC | Graphic Packaging | 41,905 | |
| City of Akron Steam Generating | City of Akron, OH | 41,771 | |
| Dominion Energy Ohio - Switzerland Station (Tran) | Dominion Energy | 41,685 | |
| Greenville Electric Gen Station | Buckeye Power | 41,602 | |
| US GYPSUM - GYPSUM PLANT | Knauf | 41,086 | |
| DUPONT CIRCLEVILLE PLANT | DuPont de Nemours | 41,066 | |
| TGP Station 214 Carrollton | Kinder Morgan | 40,761 | |
| GENERAL ELECTRIC PEEBLES TEST OPERATIONS | General Electric | 40,176 | |
| COUNTYWIDE RECYCLING & DISPOSAL FACILITY | Republic Services | 39,963 | |
| Koch Foods | Koch Foods | 39,530 | |
| PREBLE COUNTY SANITARY LANDFILL * | Preble County, OH | 39,135 | |
| Somerset | Enbridge | 39,011 | |
| Chemtrade Refinery Solutions LP | Chemtrade Logistics | 38,053 | |
| Five Points | Enbridge | 37,678 | |
| Cadiz Compressor Station | Energy Transfer | 37,260 | |
| Cleveland-Cliffs Steel Corporation | Cleveland-Cliffs | 37,239 | |
| HONDA DEVELOPMENT AND MANUFACTURING OF AMERICA * | Honda | 36,549 | |
| TITANIUM METALS CORP TORONTO PLANT | Berkshire Hathaway | 36,543 | |
| JOHNS MANVILLE INTERNATIONAL INC PLANT NO 8 | Berkshire Hathaway | 34,615 | |
| LUBRIZOL CORPORATION | Berkshire Hathaway | 33,808 | |
| EVERGREEN RECYCLING & DISPOSAL | Waste Management Inc. | 33,635 | |
| Three Rivers Energy LLC | Energy Transfer | 33,568 | 50% |
| Three Rivers Energy LLC | Lakeview Energy | 33,568 | 50% |
| Glen Karn | Enbridge | 33,058 | |
| Lebanon | Enbridge | 32,253 | |
| Eastern Gas Transmission and Storage - Mullet Station (Tran) | Berkshire Hathaway | 31,016 | |
| RMI Titanium Company LLC | Howmet Aerospace | 30,948 | |
| GALLIA COUNTY LANDFILL * | Gallia County,OH | 30,454 | |
| MOLSON COORS USA LLC - TRENTON BREWERY | Molson Coors Beverage | 30,324 | |
| Perstorp Polyols | PETRONAS | 30,309 | |
| ADM Fostoria | Archer Daniels Midland | 29,827 | |
| ANHEUSER BUSCH INC | Anheuser-Busch InBev | 29,822 | |
| Eastern Gas Transmission and Storage - Washington Station (Tran) | Berkshire Hathaway | 29,506 | |
| STONY HOLLOW LANDFILL INC | Waste Management Inc. | 29,485 | |
| Defiance Casting Operations (0320010001) | General Motors | 29,214 | |
| Eastern Gas Transmission and Storage - Newark Station (Tran) | Berkshire Hathaway | 28,933 | |
| CHILDRENS HOSPITAL MEDICAL CENTER | Cincinnati Children's Hospital Medical Center | 28,731 | |
| FORD MOTOR COMPANY - FORD OHIO ASSEMBLY PLANT | Ford Motor | 28,540 | |
| Texas Gas Transmission - Harrison Station | Loews Corp. | 28,000 | |
| JOHNS MANVILLE PLANT NO 2 | Berkshire Hathaway | 27,896 | |
| Eastern Gas Transmission and Storage - Lebanon Station (Tran) | Berkshire Hathaway | 27,877 | |
| Primary Products Ingredients Americas, LLC | KPS Capital Partners | 27,870 | |
| Mt. Eaton Landfill | Norton Environmental | 27,800 | |
| COUNTY ENVIRONMENTAL Landfill OF WYANDOT | Republic Services | 27,308 | |
| Abbott Nutrition | Abbott Laboratories | 27,099 | |
| INEOS ABS | Ineos | 26,940 | |
| ALTIVIA Petrochemicals, LLC - HAVERHILL COMPLEX | ALTIVIA | 26,878 | |
| Eastern Gas Transmission and Storage - Gilmore Station (Tran) | Berkshire Hathaway | 26,596 | |
| KAISER ALUMINUM (0145010093) | Kaiser Aluminum | 26,176 | |
| Salineville | Enbridge | 25,915 | |
| Bunge North America (East) LLC | Bunge | 25,551 | |
| Mars Petcare US, Inc. | Mars Incorporated | 25,116 | |
| Materion Brush, Inc. | Materion | 25,060 | |
| LINCOLN ELECTRIC CO * | Lincoln Electric Holdings | 25,006 | |
| Dominion Energy Ohio - Chippewa Station (Stor) | Dominion Energy | 24,950 | |
| Cleveland-Cliffs Columbus LLC | Cleveland-Cliffs | 24,409 | |
| Worthington Industries | Worthington Enterprises | 24,363 | |
| COLUMBIA GAS TRANS CORP CRAWFORD COMPRESSOR STATION | TC Energy | 24,250 | |
| Blue Racer Midstream LLC - Berne Plant | Williams Companies | 23,574 | |
| OSCO Industries, Inc. Jackson Division | OSCO INDUSTRIES INC | 23,399 | |
| Seneca Gas Processing Plant | MPLX LP | 23,283 | |
| OHIO UNIVERSITY LAUSCHE HEATING PLANT (0605010016) | State of Ohio | 23,231 | |
| Procter & Gamble Mason Business Center | Procter & Gamble | 22,884 | |
| COLUMBIA GAS TRANSMISSION LLC LUCAS COMPRESSOR STATION | TC Energy | 22,128 | |
| MIAMI UNIVERSITY (1409090081) | University System of Ohio | 21,097 | |
| Eastern Gas Transmission and Storage - Carroll Station (Tran) | Berkshire Hathaway | 20,879 | |
| Ultium Cells LLC | General Motors | 20,501 | 50% |
| Ultium Cells LLC | LG Chem | 20,501 | 50% |
| Dominion Energy Ohio - Robinson Station (Stor) | Dominion Energy | 20,181 | |
| MATALCO USA, LLC | Giampaolo Group | 19,914 | 50% |
| MATALCO USA, LLC | Rio Tinto | 19,914 | 50% |
| Kosei St. Marys, Corp. | KOSEI ALUMINUM CO | 19,790 | |
| HUNTSMAN ADVANCED MATERIALS AMERICAS, LLC | Huntsman Corp. | 19,234 | |
| PINE GROVE Landfill | Republic Services | 18,857 | |
| Eastern Gas Transmission and Storage - Groveport Station (Tran) | Berkshire Hathaway | 18,805 | |
| Cleveland-Cliffs Steel Corporation - Zanesville Works | Cleveland-Cliffs | 18,757 | |
| Superior Forge & Steel Corporation | SUPERIOR FORGE & STEEL CORP | 18,663 | |
| Royalton Road Sanitary Landfill | Norton Environmental | 18,542 | |
| PPG INDUSTRIES, INC. | PPG Industries | 18,389 | |
| COLUMBIA GAS TRANSMISSION PAVONIA STATION | TC Energy | 17,572 | |
| Dominion Energy Ohio - Appalachian Basin Eastern Overthrust (Gath) | Dominion Energy | 17,361 | |
| KRATON CHEMICAL, LLC | DL Chemical | 16,810 | |
| COSHOCTON LANDFILL INC * | Waste Management Inc. | 16,171 | |
| HOFFMAN ROAD SANITARY LANDFILL | City of Toledo, OH | 15,679 | |
| Columbia Gas Transmission LLC - Oak Hill Compressor Station | TC Energy | 14,780 | |
| ORRVILLE MUNICIPAL POWER PLANT | City of Orrville, OH | 14,181 | |
| Matalco USA LLC | Giampaolo Group | 12,581 | 50% |
| Matalco USA LLC | Rio Tinto | 12,581 | 50% |
| WILLOWCREEK LANDFILL | Republic Services | 11,947 | |
| Duke Energy Kentucky Gas Operation | Duke Energy | 10,857 | |
| OTTAWA COUNTY LANDFILL | Republic Services | 10,216 | |
| U.S. DOE PORTSMOUTH GASEOUS DIFFUSION PLANT | U.S. Government | 9,557 | |
| ELDA RDF | Waste Management Inc. | 9,050 | |
| CUYAHOGA REGIONAL SANITARY LANDFILL | Waste Management Inc. | 8,829 | |
| Duke Energy Power Delivery Midwest | Duke Energy | 8,369 | |
| Jewel Acquisition - Louisville Facility | ATI Inc. | 4,756 | |
| BIGFOOT RUN LANDFILL | Republic Services | 2,886 | |
| PAINESVILLE MUNICIPAL ELECTRIC PLANT | City of Painesville, OH | 1,607 | |
| AKRON REGIONAL LANDFILL * | Waste Management Inc. | 1,533 | |
| Waterville Gas & Oil Company | WATERVILLE GAS & OIL CO | 1,205 | |
| Utica Condensate Stabilization Facility | MPLX LP | 1,011 | |
| US Steel - Lorain Tubular Operations | Nippon Steel | 828 | |
| STATEWIDE LANDFILL | Waste Management Inc. | 536 | |
